| /* $Id$ */ |
| /************************************************************************** |
| * nano.c * |
| * * |
| * Copyright (C) 1999-2005 Chris Allegretta * |
| * This program is free software; you can redistribute it and/or modify * |
| * it under the terms of the GNU General Public License as published by * |
| * the Free Software Foundation; either version 2, or (at your option) * |
| * any later version. * |
| * * |
| * This program is distributed in the hope that it will be useful, * |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
| * GNU General Public License for more details. * |
| * * |
| * You should have received a copy of the GNU General Public License * |
| * along with this program; if not, write to the Free Software * |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * |
| * * |
| **************************************************************************/ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <stdarg.h> |
| #include <signal.h> |
| #include <unistd.h> |
| #include <string.h> |
| #include <fcntl.h> |
| #include <sys/ioctl.h> |
| #include <sys/param.h> |
| #include <sys/wait.h> |
| #include <errno.h> |
| #include <ctype.h> |
| #include <locale.h> |
| #include <assert.h> |
| #include "proto.h" |
| |
| #ifdef HAVE_TERMIOS_H |
| #include <termios.h> |
| #endif |
| |
| #ifdef HAVE_GETOPT_H |
| #include <getopt.h> |
| #endif |
| |
| #ifndef NANO_SMALL |
| #include <setjmp.h> |
| #endif |
| |
| #ifndef DISABLE_WRAPJUSTIFY |
| static ssize_t fill = 0; /* Fill - where to wrap lines, |
| basically */ |
| #endif |
| #ifndef DISABLE_WRAPPING |
| static bool same_line_wrap = FALSE; /* Whether wrapped text should |
| be prepended to the next |
| line */ |
| #endif |
| |
| static struct termios oldterm; /* The user's original term settings */ |
| static struct sigaction act; /* For all our fun signal handlers */ |
| |
| #ifndef NANO_SMALL |
| static sigjmp_buf jmpbuf; /* Used to return to mainloop after |
| SIGWINCH */ |
| static int pid; /* The PID of the newly forked process |
| * in open_pipe(). It must be global |
| * because the signal handler needs |
| * it. */ |
| #endif |
| |
| #ifndef DISABLE_JUSTIFY |
| static filestruct *jusbottom = NULL; |
| /* Pointer to end of justify buffer. */ |
| #endif |
| |
| void print_view_warning(void) |
| { |
| statusbar(_("Key illegal in VIEW mode")); |
| } |
| |
| /* What we do when we're all set to exit. */ |
| void finish(void) |
| { |
| if (!ISSET(NO_HELP)) |
| blank_bottombars(); |
| else |
| blank_statusbar(); |
| |
| wrefresh(bottomwin); |
| endwin(); |
| |
| /* Restore the old terminal settings. */ |
| tcsetattr(0, TCSANOW, &oldterm); |
| |
| #if !defined(NANO_SMALL) && defined(ENABLE_NANORC) |
| if (!ISSET(NO_RCFILE) && ISSET(HISTORYLOG)) |
| save_history(); |
| #endif |
| |
| #ifdef DEBUG |
| thanks_for_all_the_fish(); |
| #endif |
| |
| exit(0); |
| } |
| |
| /* Die (gracefully?). */ |
| void die(const char *msg, ...) |
| { |
| va_list ap; |
| |
| endwin(); |
| curses_ended = TRUE; |
| |
| /* Restore the old terminal settings. */ |
| tcsetattr(0, TCSANOW, &oldterm); |
| |
| va_start(ap, msg); |
| vfprintf(stderr, msg, ap); |
| va_end(ap); |
| |
| /* Save the current file buffer if it's been modified. */ |
| if (ISSET(MODIFIED)) |
| die_save_file(filename); |
| |
| #ifdef ENABLE_MULTIBUFFER |
| /* Save all of the other modified file buffers, if any. */ |
| if (open_files != NULL) { |
| openfilestruct *tmp = open_files; |
| |
| while (tmp != open_files->next) { |
| open_files = open_files->next; |
| |
| /* Save the current file buffer if it's been modified. */ |
| if (open_files->flags & MODIFIED) { |
| /* Set fileage and filebot to match the current file |
| * buffer, and then write it to disk. */ |
| fileage = open_files->fileage; |
| filebot = open_files->filebot; |
| die_save_file(open_files->filename); |
| } |
| } |
| } |
| #endif |
| |
| /* Get out. */ |
| exit(1); |
| } |
| |
| void die_save_file(const char *die_filename) |
| { |
| char *ret; |
| bool failed = TRUE; |
| |
| /* If we're using restricted mode, don't write any emergency backup |
| * files, since that would allow reading from or writing to files |
| * not specified on the command line. */ |
| if (ISSET(RESTRICTED)) |
| return; |
| |
| /* If we can't save, we have REAL bad problems, but we might as well |
| * TRY. */ |
| if (die_filename[0] == '\0') |
| die_filename = "nano"; |
| |
| ret = get_next_filename(die_filename); |
| if (ret[0] != '\0') |
| failed = (write_file(ret, TRUE, FALSE, TRUE) == -1); |
| |
| if (!failed) |
| fprintf(stderr, _("\nBuffer written to %s\n"), ret); |
| else |
| fprintf(stderr, |
| _("\nBuffer not written to %s (too many backup files?)\n"), ret); |
| |
| free(ret); |
| } |
| |
| /* Die with an error message that the screen was too small if, well, the |
| * screen is too small. */ |
| void check_die_too_small(void) |
| { |
| editwinrows = LINES - 5 + no_more_space() + no_help(); |
| if (editwinrows < MIN_EDITOR_ROWS) |
| die(_("Window size is too small for nano...\n")); |
| } |
| |
| /* Reassign variables that depend on the window size. That is, fill and |
| * hblank. */ |
| void resize_variables(void) |
| { |
| #ifndef DISABLE_WRAPJUSTIFY |
| fill = wrap_at; |
| if (fill <= 0) |
| fill += COLS; |
| if (fill < 0) |
| fill = 0; |
| #endif |
| |
| hblank = charealloc(hblank, COLS + 1); |
| memset(hblank, ' ', COLS); |
| hblank[COLS] = '\0'; |
| } |
| |
| /* Initialize global variables -- no better way for now. If |
| * save_cutbuffer is TRUE, don't set cutbuffer to NULL. */ |
| void global_init(bool save_cutbuffer) |
| { |
| check_die_too_small(); |
| resize_variables(); |
| |
| fileage = NULL; |
| edittop = NULL; |
| current = NULL; |
| if (!save_cutbuffer) |
| cutbuffer = NULL; |
| current_x = 0; |
| placewewant = 0; |
| current_y = 0; |
| totlines = 0; |
| totsize = 0; |
| } |
| |
| void window_init(void) |
| { |
| check_die_too_small(); |
| |
| if (topwin != NULL) |
| delwin(topwin); |
| if (edit != NULL) |
| delwin(edit); |
| if (bottomwin != NULL) |
| delwin(bottomwin); |
| |
| /* Set up the windows. */ |
| topwin = newwin(2 - no_more_space(), COLS, 0, 0); |
| edit = newwin(editwinrows, COLS, 2 - no_more_space(), 0); |
| bottomwin = newwin(3 - no_help(), COLS, editwinrows + |
| (2 - no_more_space()), 0); |
| |
| /* Turn the keypad back on. */ |
| keypad(edit, TRUE); |
| keypad(bottomwin, TRUE); |
| } |
| |
| #ifndef DISABLE_MOUSE |
| void mouse_init(void) |
| { |
| if (ISSET(USE_MOUSE)) { |
| mousemask(BUTTON1_RELEASED, NULL); |
| mouseinterval(50); |
| } else |
| mousemask(0, NULL); |
| } |
| #endif |
| |
| #ifndef DISABLE_HELP |
| /* This function allocates help_text, and stores the help string in it. |
| * help_text should be NULL initially. */ |
| void help_init(void) |
| { |
| size_t allocsize = 0; /* Space needed for help_text. */ |
| const char *htx[3]; /* Untranslated help message. We break |
| * it up into three chunks in case the |
| * full string is too long for the |
| * compiler to handle. */ |
| char *ptr; |
| const shortcut *s; |
| #ifndef NANO_SMALL |
| const toggle *t; |
| #ifdef ENABLE_NANORC |
| bool old_whitespace = ISSET(WHITESPACE_DISPLAY); |
| |
| UNSET(WHITESPACE_DISPLAY); |
| #endif |
| #endif |
| |
| /* First, set up the initial help text for the current function. */ |
| if (currshortcut == whereis_list || currshortcut == replace_list |
| || currshortcut == replace_list_2) { |
| htx[0] = N_("Search Command Help Text\n\n " |
| "Enter the words or characters you would like to " |
| "search for, and then press Enter. If there is a " |
| "match for the text you entered, the screen will be " |
| "updated to the location of the nearest match for the " |
| "search string.\n\n The previous search string will be " |
| "shown in brackets after the search prompt. Hitting " |
| "Enter without entering any text will perform the " |
| "previous search. "); |
| htx[1] = N_("If you have selected text with the mark and then " |
| "search to replace, only matches in the selected text " |
| "will be replaced.\n\n The following function keys are " |
| "available in Search mode:\n\n"); |
| htx[2] = NULL; |
| } else if (currshortcut == gotoline_list) { |
| htx[0] = N_("Go To Line Help Text\n\n " |
| "Enter the line number that you wish to go to and hit " |
| "Enter. If there are fewer lines of text than the " |
| "number you entered, you will be brought to the last " |
| "line of the file.\n\n The following function keys are " |
| "available in Go To Line mode:\n\n"); |
| htx[1] = NULL; |
| htx[2] = NULL; |
| } else if (currshortcut == insertfile_list) { |
| htx[0] = N_("Insert File Help Text\n\n " |
| "Type in the name of a file to be inserted into the " |
| "current file buffer at the current cursor " |
| "location.\n\n If you have compiled nano with multiple " |
| "file buffer support, and enable multiple file buffers " |
| "with the -F or --multibuffer command line flags, the " |
| "Meta-F toggle, or a nanorc file, inserting a file " |
| "will cause it to be loaded into a separate buffer " |
| "(use Meta-< and > to switch between file buffers). "); |
| htx[1] = N_("If you need another blank buffer, do not enter " |
| "any filename, or type in a nonexistent filename at " |
| "the prompt and press Enter.\n\n The following " |
| "function keys are available in Insert File mode:\n\n"); |
| htx[2] = NULL; |
| } else if (currshortcut == writefile_list) { |
| htx[0] = N_("Write File Help Text\n\n " |
| "Type the name that you wish to save the current file " |
| "as and press Enter to save the file.\n\n If you have " |
| "selected text with the mark, you will be prompted to " |
| "save only the selected portion to a separate file. To " |
| "reduce the chance of overwriting the current file with " |
| "just a portion of it, the current filename is not the " |
| "default in this mode.\n\n The following function keys " |
| "are available in Write File mode:\n\n"); |
| htx[1] = NULL; |
| htx[2] = NULL; |
| } |
| #ifndef DISABLE_BROWSER |
| else if (currshortcut == browser_list) { |
| htx[0] = N_("File Browser Help Text\n\n " |
| "The file browser is used to visually browse the " |
| "directory structure to select a file for reading " |
| "or writing. You may use the arrow keys or Page Up/" |
| "Down to browse through the files, and S or Enter to " |
| "choose the selected file or enter the selected " |
| "directory. To move up one level, select the " |
| "directory called \"..\" at the top of the file " |
| "list.\n\n The following function keys are available " |
| "in the file browser:\n\n"); |
| htx[1] = NULL; |
| htx[2] = NULL; |
| } else if (currshortcut == gotodir_list) { |
| htx[0] = N_("Browser Go To Directory Help Text\n\n " |
| "Enter the name of the directory you would like to " |
| "browse to.\n\n If tab completion has not been " |
| "disabled, you can use the Tab key to (attempt to) " |
| "automatically complete the directory name.\n\n The " |
| "following function keys are available in Browser Go " |
| "To Directory mode:\n\n"); |
| htx[1] = NULL; |
| htx[2] = NULL; |
| } |
| #endif |
| #ifndef DISABLE_SPELLER |
| else if (currshortcut == spell_list) { |
| htx[0] = N_("Spell Check Help Text\n\n " |
| "The spell checker checks the spelling of all text in " |
| "the current file. When an unknown word is " |
| "encountered, it is highlighted and a replacement can " |
| "be edited. It will then prompt to replace every " |
| "instance of the given misspelled word in the current " |
| "file, or, if you have selected text with the mark, in " |
| "the selected text.\n\n The following other functions " |
| "are available in Spell Check mode:\n\n"); |
| htx[1] = NULL; |
| htx[2] = NULL; |
| } |
| #endif |
| #ifndef NANO_SMALL |
| else if (currshortcut == extcmd_list) { |
| htx[0] = N_("Execute Command Help Text\n\n " |
| "This menu allows you to insert the output of a " |
| "command run by the shell into the current buffer (or " |
| "a new buffer in multiple file buffer mode). If you " |
| "need another blank buffer, do not enter any " |
| "command.\n\n The following keys are available in " |
| "Execute Command mode:\n\n"); |
| htx[1] = NULL; |
| htx[2] = NULL; |
| } |
| #endif |
| else { |
| /* Default to the main help list. */ |
| htx[0] = N_(" nano help text\n\n " |
| "The nano editor is designed to emulate the " |
| "functionality and ease-of-use of the UW Pico text " |
| "editor. There are four main sections of the editor. " |
| "The top line shows the program version, the current " |
| "filename being edited, and whether or not the file " |
| "has been modified. Next is the main editor window " |
| "showing the file being edited. The status line is " |
| "the third line from the bottom and shows important " |
| "messages. The bottom two lines show the most " |
| "commonly used shortcuts in the editor.\n\n "); |
| htx[1] = N_("The notation for shortcuts is as follows: " |
| "Control-key sequences are notated with a caret (^) " |
| "symbol and can be entered either by using the Control " |
| "(Ctrl) key or pressing the Escape (Esc) key twice. " |
| "Escape-key sequences are notated with the Meta (M) " |
| "symbol and can be entered using either the Esc, Alt, " |
| "or Meta key depending on your keyboard setup. "); |
| htx[2] = N_("Also, pressing Esc twice and then typing a " |
| "three-digit decimal number from 000 to 255 will enter " |
| "the character with the corresponding value. The " |
| "following keystrokes are available in the main editor " |
| "window. Alternative keys are shown in " |
| "parentheses:\n\n"); |
| } |
| |
| htx[0] = _(htx[0]); |
| if (htx[1] != NULL) |
| htx[1] = _(htx[1]); |
| if (htx[2] != NULL) |
| htx[2] = _(htx[2]); |
| |
| allocsize += strlen(htx[0]); |
| if (htx[1] != NULL) |
| allocsize += strlen(htx[1]); |
| if (htx[2] != NULL) |
| allocsize += strlen(htx[2]); |
| |
| /* The space needed for the shortcut lists, at most COLS characters, |
| * plus '\n'. */ |
| allocsize += (COLS < 24 ? (24 * mb_cur_max()) : |
| ((COLS + 1) * mb_cur_max())) * length_of_list(currshortcut); |
| |
| #ifndef NANO_SMALL |
| /* If we're on the main list, we also count the toggle help text. |
| * Each line has "M-%c\t\t\t", which fills 24 columns, plus a space, |
| * plus translated text, plus '\n'. */ |
| if (currshortcut == main_list) { |
| size_t endis_len = strlen(_("enable/disable")); |
| |
| for (t = toggles; t != NULL; t = t->next) |
| allocsize += 8 + strlen(t->desc) + endis_len; |
| } |
| #endif |
| |
| /* help_text has been freed and set to NULL unless the user resized |
| * while in the help screen. */ |
| free(help_text); |
| |
| /* Allocate space for the help text. */ |
| help_text = charalloc(allocsize + 1); |
| |
| /* Now add the text we want. */ |
| strcpy(help_text, htx[0]); |
| if (htx[1] != NULL) |
| strcat(help_text, htx[1]); |
| if (htx[2] != NULL) |
| strcat(help_text, htx[2]); |
| |
| ptr = help_text + strlen(help_text); |
| |
| /* Now add our shortcut info. Assume that each shortcut has, at the |
| * very least, an equivalent control key, an equivalent primary meta |
| * key sequence, or both. Also assume that the meta key values are |
| * not control characters. We can display a maximum of 3 shortcut |
| * entries. */ |
| for (s = currshortcut; s != NULL; s = s->next) { |
| int entries = 0; |
| |
| /* Control key. */ |
| if (s->ctrlval != NANO_NO_KEY) { |
| entries++; |
| #ifndef NANO_SMALL |
| if (s->ctrlval == NANO_HISTORY_KEY) { |
| char *up_ptr = display_string(_("Up"), 0, 7, FALSE); |
| |
| ptr += sprintf(ptr, "%s", up_ptr); |
| |
| free(up_ptr); |
| } else |
| #endif |
| if (s->ctrlval == NANO_CONTROL_SPACE) { |
| char *space_ptr = display_string(_("Space"), 0, 6, |
| FALSE); |
| |
| ptr += sprintf(ptr, "^%s", space_ptr); |
| |
| free(space_ptr); |
| } else if (s->ctrlval == NANO_CONTROL_8) |
| ptr += sprintf(ptr, "^?"); |
| else |
| ptr += sprintf(ptr, "^%c", s->ctrlval + 64); |
| *(ptr++) = '\t'; |
| } |
| |
| /* Function key. */ |
| if (s->funcval != NANO_NO_KEY) { |
| entries++; |
| /* If this is the first entry, put it in the middle. */ |
| if (entries == 1) { |
| entries++; |
| *(ptr++) = '\t'; |
| } |
| ptr += sprintf(ptr, "(F%d)", s->funcval - KEY_F0); |
| *(ptr++) = '\t'; |
| } |
| |
| /* Primary meta key sequence. */ |
| if (s->metaval != NANO_NO_KEY) { |
| entries++; |
| /* If this is the last entry, put it at the end. */ |
| if (entries == 2 && s->miscval == NANO_NO_KEY) { |
| entries++; |
| *(ptr++) = '\t'; |
| } |
| /* If the primary meta key sequence is the first entry, |
| * don't put parentheses around it. */ |
| if (entries == 1 && s->metaval == NANO_ALT_SPACE) { |
| char *space_ptr = display_string(_("Space"), 0, 5, |
| FALSE); |
| |
| ptr += sprintf(ptr, "M-%s", space_ptr); |
| |
| free(space_ptr); |
| } else |
| ptr += sprintf(ptr, entries == 1 ? "M-%c" : "(M-%c)", |
| toupper(s->metaval)); |
| *(ptr++) = '\t'; |
| } |
| |
| /* Miscellaneous meta key sequence. */ |
| if (entries < 3 && s->miscval != NANO_NO_KEY) { |
| entries++; |
| /* If this is the last entry, put it at the end. */ |
| if (entries == 2) { |
| entries++; |
| *(ptr++) = '\t'; |
| } |
| ptr += sprintf(ptr, "(M-%c)", toupper(s->miscval)); |
| *(ptr++) = '\t'; |
| } |
| |
| /* Make sure all the help text starts at the same place. */ |
| while (entries < 3) { |
| entries++; |
| *(ptr++) = '\t'; |
| } |
| |
| assert(s->help != NULL); |
| |
| if (COLS > 24) { |
| char *help_ptr = display_string(s->help, 0, COLS - 24, |
| FALSE); |
| |
| ptr += sprintf(ptr, help_ptr); |
| |
| free(help_ptr); |
| } |
| ptr += sprintf(ptr, "\n"); |
| } |
| |
| #ifndef NANO_SMALL |
| /* And the toggles... */ |
| if (currshortcut == main_list) { |
| for (t = toggles; t != NULL; t = t->next) { |
| |
| assert(t->desc != NULL); |
| |
| ptr += sprintf(ptr, "M-%c\t\t\t%s %s\n", toupper(t->val), |
| t->desc, _("enable/disable")); |
| } |
| } |
| |
| #ifdef ENABLE_NANORC |
| if (old_whitespace) |
| SET(WHITESPACE_DISPLAY); |
| #endif |
| #endif |
| |
| /* If all went well, we didn't overwrite the allocated space for |
| * help_text. */ |
| assert(strlen(help_text) <= allocsize + 1); |
| } |
| #endif |
| |
| /* Create a new filestruct node. Note that we specifically do not set |
| * prevnode->next equal to the new line. */ |
| filestruct *make_new_node(filestruct *prevnode) |
| { |
| filestruct *newnode = (filestruct *)nmalloc(sizeof(filestruct)); |
| newnode->data = NULL; |
| newnode->prev = prevnode; |
| newnode->next = NULL; |
| newnode->lineno = (prevnode != NULL) ? prevnode->lineno + 1 : 1; |
| return newnode; |
| } |
| |
| /* Make a copy of a filestruct node. */ |
| filestruct *copy_node(const filestruct *src) |
| { |
| filestruct *dst; |
| |
| assert(src != NULL); |
| |
| dst = (filestruct *)nmalloc(sizeof(filestruct)); |
| |
| dst->data = mallocstrcpy(NULL, src->data); |
| dst->next = src->next; |
| dst->prev = src->prev; |
| dst->lineno = src->lineno; |
| |
| return dst; |
| } |
| |
| /* Splice a node into an existing filestruct. */ |
| void splice_node(filestruct *begin, filestruct *newnode, filestruct |
| *end) |
| { |
| assert(newnode != NULL && begin != NULL); |
| |
| newnode->next = end; |
| newnode->prev = begin; |
| begin->next = newnode; |
| if (end != NULL) |
| end->prev = newnode; |
| } |
| |
| /* Unlink a node from the rest of the filestruct. */ |
| void unlink_node(const filestruct *fileptr) |
| { |
| assert(fileptr != NULL); |
| |
| if (fileptr->prev != NULL) |
| fileptr->prev->next = fileptr->next; |
| if (fileptr->next != NULL) |
| fileptr->next->prev = fileptr->prev; |
| } |
| |
| /* Delete a node from the filestruct. */ |
| void delete_node(filestruct *fileptr) |
| { |
| assert(fileptr != NULL && fileptr->data != NULL); |
| |
| if (fileptr->data != NULL) |
| free(fileptr->data); |
| free(fileptr); |
| } |
| |
| /* Okay, now let's duplicate a whole struct! */ |
| filestruct *copy_filestruct(const filestruct *src) |
| { |
| filestruct *head; /* copy of src, top of the copied list */ |
| filestruct *prev; /* temp that traverses the list */ |
| |
| assert(src != NULL); |
| |
| prev = copy_node(src); |
| prev->prev = NULL; |
| head = prev; |
| src = src->next; |
| while (src != NULL) { |
| prev->next = copy_node(src); |
| prev->next->prev = prev; |
| prev = prev->next; |
| |
| src = src->next; |
| } |
| |
| prev->next = NULL; |
| return head; |
| } |
| |
| /* Frees a filestruct. */ |
| void free_filestruct(filestruct *src) |
| { |
| assert(src != NULL); |
| |
| while (src->next != NULL) { |
| src = src->next; |
| delete_node(src->prev); |
| } |
| delete_node(src); |
| } |
| |
| /* Partition a filestruct so it begins at (top, top_x) and ends at (bot, |
| * bot_x). */ |
| partition *partition_filestruct(filestruct *top, size_t top_x, |
| filestruct *bot, size_t bot_x) |
| { |
| partition *p; |
| |
| assert(top != NULL && bot != NULL && fileage != NULL && filebot != NULL); |
| |
| /* Initialize the partition. */ |
| p = (partition *)nmalloc(sizeof(partition)); |
| |
| /* If the top and bottom of the partition are different from the top |
| * and bottom of the filestruct, save the latter and then set them |
| * to top and bot. */ |
| if (top != fileage) { |
| p->fileage = fileage; |
| fileage = top; |
| } else |
| p->fileage = NULL; |
| if (bot != filebot) { |
| p->filebot = filebot; |
| filebot = bot; |
| } else |
| p->filebot = NULL; |
| |
| /* Save the line above the top of the partition, detach the top of |
| * the partition from it, and save the text before top_x in |
| * top_data. */ |
| p->top_prev = top->prev; |
| top->prev = NULL; |
| p->top_data = mallocstrncpy(NULL, top->data, top_x + 1); |
| p->top_data[top_x] = '\0'; |
| |
| /* Save the line below the bottom of the partition, detach the |
| * bottom of the partition from it, and save the text after bot_x in |
| * bot_data. */ |
| p->bot_next = bot->next; |
| bot->next = NULL; |
| p->bot_data = mallocstrcpy(NULL, bot->data + bot_x); |
| |
| /* Remove all text after bot_x at the bottom of the partition. */ |
| null_at(&bot->data, bot_x); |
| |
| /* Remove all text before top_x at the top of the partition. */ |
| charmove(top->data, top->data + top_x, strlen(top->data) - |
| top_x + 1); |
| align(&top->data); |
| |
| /* Return the partition. */ |
| return p; |
| } |
| |
| /* Unpartition a filestruct so it begins at (fileage, 0) and ends at |
| * (filebot, strlen(filebot)) again. */ |
| void unpartition_filestruct(partition **p) |
| { |
| char *tmp; |
| |
| assert(p != NULL && fileage != NULL && filebot != NULL); |
| |
| /* Reattach the line above the top of the partition, and restore the |
| * text before top_x from top_data. Free top_data when we're done |
| * with it. */ |
| tmp = mallocstrcpy(NULL, fileage->data); |
| fileage->prev = (*p)->top_prev; |
| if (fileage->prev != NULL) |
| fileage->prev->next = fileage; |
| fileage->data = charealloc(fileage->data, strlen((*p)->top_data) + |
| strlen(fileage->data) + 1); |
| strcpy(fileage->data, (*p)->top_data); |
| free((*p)->top_data); |
| strcat(fileage->data, tmp); |
| free(tmp); |
| |
| /* Reattach the line below the bottom of the partition, and restore |
| * the text after bot_x from bot_data. Free bot_data when we're |
| * done with it. */ |
| filebot->next = (*p)->bot_next; |
| if (filebot->next != NULL) |
| filebot->next->prev = filebot; |
| filebot->data = charealloc(filebot->data, strlen(filebot->data) + |
| strlen((*p)->bot_data) + 1); |
| strcat(filebot->data, (*p)->bot_data); |
| free((*p)->bot_data); |
| |
| /* Restore the top and bottom of the filestruct, if they were |
| * different from the top and bottom of the partition. */ |
| if ((*p)->fileage != NULL) |
| fileage = (*p)->fileage; |
| if ((*p)->filebot != NULL) |
| filebot = (*p)->filebot; |
| |
| /* Uninitialize the partition. */ |
| free(*p); |
| *p = NULL; |
| } |
| |
| /* Move all the text between (top, top_x) and (bot, bot_x) in the |
| * current filestruct to a filestruct beginning with file_top and ending |
| * with file_bot. If no text is between (top, top_x) and (bot, bot_x), |
| * don't do anything. */ |
| void move_to_filestruct(filestruct **file_top, filestruct **file_bot, |
| filestruct *top, size_t top_x, filestruct *bot, size_t bot_x) |
| { |
| filestruct *top_save; |
| size_t part_totsize; |
| bool at_edittop; |
| #ifndef NANO_SMALL |
| bool mark_inside = FALSE; |
| #endif |
| |
| assert(file_top != NULL && file_bot != NULL && top != NULL && bot != NULL); |
| |
| /* If (top, top_x)-(bot, bot_x) doesn't cover any text, get out. */ |
| if (top == bot && top_x == bot_x) |
| return; |
| |
| /* Partition the filestruct so that it contains only the text from |
| * (top, top_x) to (bot, bot_x), keep track of whether the top of |
| * the partition is the top of the edit window, and keep track of |
| * whether the mark begins inside the partition. */ |
| filepart = partition_filestruct(top, top_x, bot, bot_x); |
| at_edittop = (fileage == edittop); |
| #ifndef NANO_SMALL |
| if (ISSET(MARK_ISSET)) |
| mark_inside = (mark_beginbuf->lineno >= fileage->lineno && |
| mark_beginbuf->lineno <= filebot->lineno && |
| (mark_beginbuf != fileage || mark_beginx >= top_x) && |
| (mark_beginbuf != filebot || mark_beginx <= bot_x)); |
| #endif |
| |
| /* Get the number of characters in the text, and subtract it from |
| * totsize. */ |
| get_totals(top, bot, NULL, &part_totsize); |
| totsize -= part_totsize; |
| |
| if (*file_top == NULL) { |
| /* If file_top is empty, just move all the text directly into |
| * it. This is equivalent to tacking the text in top onto the |
| * (lack of) text at the end of file_top. */ |
| *file_top = fileage; |
| *file_bot = filebot; |
| } else { |
| /* Otherwise, tack the text in top onto the text at the end of |
| * file_bot. */ |
| (*file_bot)->data = charealloc((*file_bot)->data, |
| strlen((*file_bot)->data) + strlen(fileage->data) + 1); |
| strcat((*file_bot)->data, fileage->data); |
| |
| /* Attach the line after top to the line after file_bot. Then, |
| * if there's more than one line after top, move file_bot down |
| * to bot. */ |
| (*file_bot)->next = fileage->next; |
| if ((*file_bot)->next != NULL) { |
| (*file_bot)->next->prev = *file_bot; |
| *file_bot = filebot; |
| } |
| } |
| |
| /* Since the text has now been saved, remove it from the filestruct. |
| * If the top of the partition was the top of the edit window, set |
| * edittop to where the text used to start. If the mark began |
| * inside the partition, set the beginning of the mark to where the |
| * text used to start. */ |
| fileage = (filestruct *)nmalloc(sizeof(filestruct)); |
| fileage->data = mallocstrcpy(NULL, ""); |
| filebot = fileage; |
| if (at_edittop) |
| edittop = fileage; |
| #ifndef NANO_SMALL |
| if (mark_inside) { |
| mark_beginbuf = fileage; |
| mark_beginx = top_x; |
| } |
| #endif |
| |
| /* Restore the current line and cursor position. */ |
| current = fileage; |
| current_x = top_x; |
| |
| top_save = fileage; |
| |
| /* Unpartition the filestruct so that it contains all the text |
| * again, minus the saved text. */ |
| unpartition_filestruct(&filepart); |
| |
| /* Renumber starting with the beginning line of the old |
| * partition. */ |
| renumber(top_save); |
| |
| if (filebot->data[0] != '\0') |
| new_magicline(); |
| |
| /* Set totlines to the new number of lines in the file. */ |
| totlines = filebot->lineno; |
| } |
| |
| /* Copy all the text from the filestruct beginning with file_top and |
| * ending with file_bot to the current filestruct at the current cursor |
| * position. */ |
| void copy_from_filestruct(filestruct *file_top, filestruct *file_bot) |
| { |
| filestruct *top_save; |
| int part_totlines; |
| size_t part_totsize; |
| bool at_edittop; |
| |
| assert(file_top != NULL && file_bot != NULL); |
| |
| /* Partition the filestruct so that it contains no text, and keep |
| * track of whether the top of the partition is the top of the edit |
| * window. */ |
| filepart = partition_filestruct(current, current_x, current, |
| current_x); |
| at_edittop = (fileage == edittop); |
| |
| /* Put the top and bottom of the filestruct at copies of file_top |
| * and file_bot. */ |
| fileage = copy_filestruct(file_top); |
| filebot = fileage; |
| while (filebot->next != NULL) |
| filebot = filebot->next; |
| |
| /* Restore the current line and cursor position. */ |
| current = filebot; |
| current_x = strlen(filebot->data); |
| if (fileage == filebot) |
| current_x += strlen(filepart->top_data); |
| |
| /* Get the number of lines and the number of characters in the saved |
| * text, and add the latter to totsize. */ |
| get_totals(fileage, filebot, &part_totlines, &part_totsize); |
| totsize += part_totsize; |
| |
| /* If the top of the partition was the top of the edit window, set |
| * edittop to where the saved text now starts, and update the |
| * current y-coordinate to account for the number of lines it |
| * has, less one since the first line will be tacked onto the |
| * current line. */ |
| if (at_edittop) |
| edittop = fileage; |
| current_y += part_totlines - 1; |
| |
| top_save = fileage; |
| |
| /* Unpartition the filestruct so that it contains all the text |
| * again, minus the saved text. */ |
| unpartition_filestruct(&filepart); |
| |
| /* Renumber starting with the beginning line of the old |
| * partition. */ |
| renumber(top_save); |
| |
| if (filebot->data[0] != '\0') |
| new_magicline(); |
| |
| /* Set totlines to the new number of lines in the file. */ |
| totlines = filebot->lineno; |
| } |
| |
| void renumber_all(void) |
| { |
| filestruct *temp; |
| int i = 1; |
| |
| assert(fileage == NULL || fileage != fileage->next); |
| |
| for (temp = fileage; temp != NULL; temp = temp->next) |
| temp->lineno = i++; |
| } |
| |
| void renumber(filestruct *fileptr) |
| { |
| if (fileptr == NULL || fileptr->prev == NULL || fileptr == fileage) |
| renumber_all(); |
| else { |
| int lineno = fileptr->prev->lineno; |
| |
| assert(fileptr != fileptr->next); |
| |
| for (; fileptr != NULL; fileptr = fileptr->next) |
| fileptr->lineno = ++lineno; |
| } |
| } |
| |
| #ifdef HAVE_GETOPT_LONG |
| #define print1opt(shortflag, longflag, desc) print1opt_full(shortflag, longflag, desc) |
| #else |
| #define print1opt(shortflag, longflag, desc) print1opt_full(shortflag, desc) |
| #endif |
| |
| /* Print one usage string to the screen. This cuts down on duplicate |
| * strings to translate, and leaves out the parts that shouldn't be |
| * translatable (the flag names). */ |
| void print1opt_full(const char *shortflag |
| #ifdef HAVE_GETOPT_LONG |
| , const char *longflag |
| #endif |
| , const char *desc) |
| { |
| printf(" %s\t", shortflag); |
| if (strlen(shortflag) < 8) |
| printf("\t"); |
| |
| #ifdef HAVE_GETOPT_LONG |
| printf("%s\t", longflag); |
| if (strlen(longflag) < 8) |
| printf("\t\t"); |
| else if (strlen(longflag) < 16) |
| printf("\t"); |
| #endif |
| |
| if (desc != NULL) |
| printf("%s", _(desc)); |
| printf("\n"); |
| } |
| |
| void usage(void) |
| { |
| #ifdef HAVE_GETOPT_LONG |
| printf(_("Usage: nano [+LINE] [GNU long option] [option] [file]\n\n")); |
| printf(_("Option\t\tLong option\t\tMeaning\n")); |
| #else |
| printf(_("Usage: nano [+LINE] [option] [file]\n\n")); |
| printf(_("Option\t\tMeaning\n")); |
| #endif |
| |
| print1opt("-h, -?", "--help", N_("Show this message")); |
| print1opt(_("+LINE"), "", N_("Start at line number LINE")); |
| #ifndef NANO_SMALL |
| print1opt("-A", "--smarthome", N_("Enable smart home key")); |
| print1opt("-B", "--backup", N_("Backup existing files on save")); |
| print1opt(_("-E [dir]"), _("--backupdir=[dir]"), N_("Directory for writing backup files")); |
| #endif |
| #ifdef ENABLE_MULTIBUFFER |
| print1opt("-F", "--multibuffer", N_("Enable multiple file buffers")); |
| #endif |
| #ifdef ENABLE_NANORC |
| #ifndef NANO_SMALL |
| print1opt("-H", "--historylog", N_("Log & read search/replace string history")); |
| #endif |
| print1opt("-I", "--ignorercfiles", N_("Don't look at nanorc files")); |
| #endif |
| #ifndef NANO_SMALL |
| print1opt("-N", "--noconvert", N_("Don't convert files from DOS/Mac format")); |
| #endif |
| print1opt("-O", "--morespace", N_("Use more space for editing")); |
| #ifndef DISABLE_JUSTIFY |
| print1opt(_("-Q [str]"), _("--quotestr=[str]"), N_("Quoting string, default \"> \"")); |
| #endif |
| #ifdef HAVE_REGEX_H |
| print1opt("-R", "--regexp", N_("Do regular expression searches")); |
| #endif |
| #ifndef NANO_SMALL |
| print1opt("-S", "--smooth", N_("Smooth scrolling")); |
| #endif |
| print1opt(_("-T [#cols]"), _("--tabsize=[#cols]"), N_("Set width of a tab in cols to #cols")); |
| print1opt("-V", "--version", N_("Print version information and exit")); |
| #ifdef ENABLE_COLOR |
| print1opt(_("-Y [str]"), _("--syntax=[str]"), N_("Syntax definition to use")); |
| #endif |
| print1opt("-Z", "--restricted", N_("Restricted mode")); |
| print1opt("-c", "--const", N_("Constantly show cursor position")); |
| print1opt("-d", "--rebinddelete", N_("Fix Backspace/Delete confusion problem")); |
| #ifndef NANO_SMALL |
| print1opt("-i", "--autoindent", N_("Automatically indent new lines")); |
| print1opt("-k", "--cut", N_("Cut from cursor to end of line")); |
| #endif |
| print1opt("-l", "--nofollow", N_("Don't follow symbolic links, overwrite")); |
| #ifndef DISABLE_MOUSE |
| print1opt("-m", "--mouse", N_("Enable mouse")); |
| #endif |
| #ifndef DISABLE_OPERATINGDIR |
| print1opt(_("-o [dir]"), _("--operatingdir=[dir]"), N_("Set operating directory")); |
| #endif |
| print1opt("-p", "--preserve", N_("Preserve XON (^Q) and XOFF (^S) keys")); |
| #ifndef DISABLE_WRAPJUSTIFY |
| print1opt(_("-r [#cols]"), _("--fill=[#cols]"), N_("Set fill cols to (wrap lines at) #cols")); |
| #endif |
| #ifndef DISABLE_SPELLER |
| print1opt(_("-s [prog]"), _("--speller=[prog]"), N_("Enable alternate speller")); |
| #endif |
| print1opt("-t", "--tempfile", N_("Auto save on exit, don't prompt")); |
| print1opt("-v", "--view", N_("View (read only) mode")); |
| #ifndef DISABLE_WRAPPING |
| print1opt("-w", "--nowrap", N_("Don't wrap long lines")); |
| #endif |
| print1opt("-x", "--nohelp", N_("Don't show help window")); |
| print1opt("-z", "--suspend", N_("Enable suspend")); |
| |
| /* This is a special case. */ |
| print1opt("-a, -b, -e,", "", NULL); |
| print1opt("-f, -g, -j", "", _("(ignored, for Pico compatibility)")); |
| |
| exit(0); |
| } |
| |
| void version(void) |
| { |
| printf(_(" GNU nano version %s (compiled %s, %s)\n"), VERSION, |
| __TIME__, __DATE__); |
| printf( |
| _(" Email: nano@nano-editor.org Web: http://www.nano-editor.org/")); |
| printf(_("\n Compiled options:")); |
| |
| #ifndef ENABLE_NLS |
| printf(" --disable-nls"); |
| #endif |
| #ifdef DEBUG |
| printf(" --enable-debug"); |
| #endif |
| #ifdef NANO_EXTRA |
| printf(" --enable-extra"); |
| #endif |
| #ifdef NANO_SMALL |
| printf(" --enable-tiny"); |
| #else |
| #ifdef DISABLE_BROWSER |
| printf(" --disable-browser"); |
| #endif |
| #ifdef DISABLE_HELP |
| printf(" --disable-help"); |
| #endif |
| #ifdef DISABLE_JUSTIFY |
| printf(" --disable-justify"); |
| #endif |
| #ifdef DISABLE_MOUSE |
| printf(" --disable-mouse"); |
| #endif |
| #ifdef DISABLE_OPERATINGDIR |
| printf(" --disable-operatingdir"); |
| #endif |
| #ifdef DISABLE_SPELLER |
| printf(" --disable-speller"); |
| #endif |
| #ifdef DISABLE_TABCOMP |
| printf(" --disable-tabcomp"); |
| #endif |
| #endif /* NANO_SMALL */ |
| #ifdef DISABLE_WRAPPING |
| printf(" --disable-wrapping"); |
| #endif |
| #ifdef DISABLE_ROOTWRAP |
| printf(" --disable-wrapping-as-root"); |
| #endif |
| #ifdef ENABLE_COLOR |
| printf(" --enable-color"); |
| #endif |
| #ifdef ENABLE_MULTIBUFFER |
| printf(" --enable-multibuffer"); |
| #endif |
| #ifdef ENABLE_NANORC |
| printf(" --enable-nanorc"); |
| #endif |
| #ifdef USE_SLANG |
| printf(" --with-slang"); |
| #endif |
| printf("\n"); |
| } |
| |
| int no_more_space(void) |
| { |
| return ISSET(MORE_SPACE) ? 1 : 0; |
| } |
| |
| int no_help(void) |
| { |
| return ISSET(NO_HELP) ? 2 : 0; |
| } |
| |
| void nano_disabled_msg(void) |
| { |
| statusbar(_("Sorry, support for this function has been disabled")); |
| } |
| |
| #ifndef NANO_SMALL |
| void cancel_fork(int signal) |
| { |
| if (kill(pid, SIGKILL) == -1) |
| nperror("kill"); |
| } |
| |
| /* Return TRUE on success. */ |
| bool open_pipe(const char *command) |
| { |
| int fd[2]; |
| FILE *f; |
| struct sigaction oldaction, newaction; |
| /* Original and temporary handlers for |
| * SIGINT. */ |
| bool sig_failed = FALSE; |
| /* sig_failed means that sigaction() failed without changing the |
| * signal handlers. |
| * |
| * We use this variable since it is important to put things back |
| * when we finish, even if we get errors. */ |
| |
| /* Make our pipes. */ |
| |
| if (pipe(fd) == -1) { |
| statusbar(_("Could not pipe")); |
| return FALSE; |
| } |
| |
| /* Fork a child. */ |
| |
| if ((pid = fork()) == 0) { |
| close(fd[0]); |
| dup2(fd[1], fileno(stdout)); |
| dup2(fd[1], fileno(stderr)); |
| /* If execl() returns at all, there was an error. */ |
| |
| execl("/bin/sh", "sh", "-c", command, NULL); |
| exit(0); |
| } |
| |
| /* Else continue as parent. */ |
| |
| close(fd[1]); |
| |
| if (pid == -1) { |
| close(fd[0]); |
| statusbar(_("Could not fork")); |
| return FALSE; |
| } |
| |
| /* Before we start reading the forked command's output, we set |
| * things up so that ^C will cancel the new process. */ |
| |
| /* Enable interpretation of the special control keys so that we get |
| * SIGINT when Ctrl-C is pressed. */ |
| enable_signals(); |
| |
| if (sigaction(SIGINT, NULL, &newaction) == -1) { |
| sig_failed = TRUE; |
| nperror("sigaction"); |
| } else { |
| newaction.sa_handler = cancel_fork; |
| if (sigaction(SIGINT, &newaction, &oldaction) == -1) { |
| sig_failed = TRUE; |
| nperror("sigaction"); |
| } |
| } |
| /* Note that now oldaction is the previous SIGINT signal handler, |
| * to be restored later. */ |
| |
| f = fdopen(fd[0], "rb"); |
| if (f == NULL) |
| nperror("fdopen"); |
| |
| read_file(f, "stdin"); |
| |
| /* If multibuffer mode is on, we could be here in view mode. If so, |
| * don't set the modification flag. */ |
| if (!ISSET(VIEW_MODE)) |
| set_modified(); |
| |
| if (wait(NULL) == -1) |
| nperror("wait"); |
| |
| if (!sig_failed && sigaction(SIGINT, &oldaction, NULL) == -1) |
| nperror("sigaction"); |
| |
| /* Disable interpretation of the special control keys so that we can |
| * use Ctrl-C for other things. */ |
| disable_signals(); |
| |
| return TRUE; |
| } |
| #endif /* !NANO_SMALL */ |
| |
| void do_verbatim_input(void) |
| { |
| int *kbinput; |
| size_t kbinput_len, i; |
| char *output; |
| |
| statusbar(_("Verbatim input")); |
| |
| /* Read in all the verbatim characters. */ |
| kbinput = get_verbatim_kbinput(edit, &kbinput_len); |
| |
| /* Display all the verbatim characters at once, not filtering out |
| * control characters. */ |
| output = charalloc(kbinput_len + 1); |
| |
| for (i = 0; i < kbinput_len; i++) |
| output[i] = (char)kbinput[i]; |
| output[i] = '\0'; |
| |
| do_output(output, kbinput_len, TRUE); |
| |
| free(output); |
| } |
| |
| void do_backspace(void) |
| { |
| if (current != fileage || current_x > 0) { |
| do_left(FALSE); |
| do_delete(); |
| } |
| } |
| |
| void do_delete(void) |
| { |
| bool do_refresh = FALSE; |
| /* Do we have to call edit_refresh(), or can we get away with |
| * update_line()? */ |
| |
| assert(current != NULL && current->data != NULL && current_x <= strlen(current->data)); |
| |
| placewewant = xplustabs(); |
| |
| if (current->data[current_x] != '\0') { |
| int char_buf_len = parse_mbchar(current->data + current_x, NULL, |
| NULL, NULL); |
| size_t line_len = strlen(current->data + current_x); |
| |
| assert(current_x < strlen(current->data)); |
| |
| /* Let's get dangerous. */ |
| charmove(¤t->data[current_x], |
| ¤t->data[current_x + char_buf_len], |
| line_len - char_buf_len + 1); |
| |
| null_at(¤t->data, current_x + line_len - char_buf_len); |
| #ifndef NANO_SMALL |
| if (current_x < mark_beginx && mark_beginbuf == current) |
| mark_beginx -= char_buf_len; |
| #endif |
| totsize--; |
| } else if (current != filebot && (current->next != filebot || |
| current->data[0] == '\0')) { |
| /* We can delete the line before filebot only if it is blank: it |
| * becomes the new magicline then. */ |
| filestruct *foo = current->next; |
| |
| assert(current_x == strlen(current->data)); |
| |
| /* If we're deleting at the end of a line, we need to call |
| * edit_refresh(). */ |
| if (current->data[current_x] == '\0') |
| do_refresh = TRUE; |
| |
| current->data = charealloc(current->data, |
| current_x + strlen(foo->data) + 1); |
| strcpy(current->data + current_x, foo->data); |
| #ifndef NANO_SMALL |
| if (mark_beginbuf == current->next) { |
| mark_beginx += current_x; |
| mark_beginbuf = current; |
| } |
| #endif |
| if (filebot == foo) |
| filebot = current; |
| |
| unlink_node(foo); |
| delete_node(foo); |
| renumber(current); |
| totlines--; |
| totsize--; |
| #ifndef DISABLE_WRAPPING |
| wrap_reset(); |
| #endif |
| } else |
| return; |
| |
| set_modified(); |
| |
| #ifdef ENABLE_COLOR |
| /* If color syntaxes are turned on, we need to call |
| * edit_refresh(). */ |
| if (!ISSET(NO_COLOR_SYNTAX)) |
| do_refresh = TRUE; |
| #endif |
| |
| if (do_refresh) |
| edit_refresh(); |
| else |
| update_line(current, current_x); |
| } |
| |
| void do_tab(void) |
| { |
| char *kbinput = "\t"; |
| |
| do_output(kbinput, 1, TRUE); |
| } |
| |
| /* Someone hits return *gasp!* */ |
| void do_enter(void) |
| { |
| filestruct *newnode = make_new_node(current); |
| size_t extra = 0; |
| |
| assert(current != NULL && current->data != NULL); |
| |
| #ifndef NANO_SMALL |
| /* Do auto-indenting, like the neolithic Turbo Pascal editor. */ |
| if (ISSET(AUTOINDENT)) { |
| /* If we are breaking the line in the indentation, the new |
| * indentation should have only current_x characters, and |
| * current_x should not change. */ |
| extra = indent_length(current->data); |
| if (extra > current_x) |
| extra = current_x; |
| } |
| #endif |
| newnode->data = charalloc(strlen(current->data + current_x) + |
| extra + 1); |
| strcpy(&newnode->data[extra], current->data + current_x); |
| #ifndef NANO_SMALL |
| if (ISSET(AUTOINDENT)) { |
| strncpy(newnode->data, current->data, extra); |
| totsize += mbstrlen(newnode->data); |
| } |
| #endif |
| null_at(¤t->data, current_x); |
| #ifndef NANO_SMALL |
| if (current == mark_beginbuf && current_x < mark_beginx) { |
| mark_beginbuf = newnode; |
| mark_beginx += extra - current_x; |
| } |
| #endif |
| current_x = extra; |
| |
| if (current == filebot) |
| filebot = newnode; |
| splice_node(current, newnode, current->next); |
| |
| renumber(current); |
| current = newnode; |
| |
| edit_refresh(); |
| |
| totlines++; |
| totsize++; |
| set_modified(); |
| placewewant = xplustabs(); |
| } |
| |
| #ifndef NANO_SMALL |
| /* Move to the next word. */ |
| void do_next_word(void) |
| { |
| size_t pww_save = placewewant; |
| const filestruct *current_save = current; |
| char *char_mb; |
| int char_mb_len; |
| |
| assert(current != NULL && current->data != NULL); |
| |
| char_mb = charalloc(mb_cur_max()); |
| |
| /* Move forward until we find the character after the last letter of |
| * the current word. */ |
| while (current->data[current_x] != '\0') { |
| char_mb_len = parse_mbchar(current->data + current_x, char_mb, |
| NULL, NULL); |
| |
| /* If we've found it, stop moving forward through the current |
| * line. */ |
| if (!is_alnum_mbchar(char_mb)) |
| break; |
| |
| current_x += char_mb_len; |
| } |
| |
| /* Move forward until we find the first letter of the next word. */ |
| if (current->data[current_x] != '\0') |
| current_x += char_mb_len; |
| |
| for (; current != NULL; current = current->next) { |
| while (current->data[current_x] != '\0') { |
| char_mb_len = parse_mbchar(current->data + current_x, |
| char_mb, NULL, NULL); |
| |
| /* If we've found it, stop moving forward through the |
| * current line. */ |
| if (is_alnum_mbchar(char_mb)) |
| break; |
| |
| current_x += char_mb_len; |
| } |
| |
| /* If we've found it, stop moving forward to the beginnings of |
| * subsequent lines. */ |
| if (current->data[current_x] != '\0') |
| break; |
| |
| current_x = 0; |
| } |
| |
| free(char_mb); |
| |
| /* If we haven't found it, leave the cursor at the end of the |
| * file. */ |
| if (current == NULL) |
| current = filebot; |
| |
| placewewant = xplustabs(); |
| |
| /* Update the screen. */ |
| edit_redraw(current_save, pww_save); |
| } |
| |
| /* Move to the previous word. */ |
| void do_prev_word(void) |
| { |
| size_t pww_save = placewewant; |
| const filestruct *current_save = current; |
| char *char_mb; |
| int char_mb_len; |
| bool begin_line = FALSE; |
| |
| assert(current != NULL && current->data != NULL); |
| |
| char_mb = charalloc(mb_cur_max()); |
| |
| /* Move backward until we find the character before the first letter |
| * of the current word. */ |
| while (!begin_line) { |
| char_mb_len = parse_mbchar(current->data + current_x, char_mb, |
| NULL, NULL); |
| |
| /* If we've found it, stop moving backward through the current |
| * line. */ |
| if (!is_alnum_mbchar(char_mb)) |
| break; |
| |
| if (current_x == 0) |
| begin_line = TRUE; |
| else |
| current_x = move_mbleft(current->data, current_x); |
| } |
| |
| /* Move backward until we find the last letter of the previous |
| * word. */ |
| if (current_x == 0) |
| begin_line = TRUE; |
| else |
| current_x = move_mbleft(current->data, current_x); |
| |
| for (; current != NULL; current = current->prev) { |
| while (!begin_line) { |
| char_mb_len = parse_mbchar(current->data + current_x, |
| char_mb, NULL, NULL); |
| |
| /* If we've found it, stop moving backward through the |
| * current line. */ |
| if (is_alnum_mbchar(char_mb)) |
| break; |
| |
| if (current_x == 0) |
| begin_line = TRUE; |
| else |
| current_x = move_mbleft(current->data, current_x); |
| } |
| |
| /* If we've found it, stop moving backward to the ends of |
| * previous lines. */ |
| if (!begin_line) |
| break; |
| |
| if (current->prev != NULL) { |
| begin_line = FALSE; |
| current_x = strlen(current->prev->data); |
| } |
| } |
| |
| /* If we haven't found it, leave the cursor at the beginning of the |
| * file. */ |
| if (current == NULL) { |
| current = fileage; |
| current_x = 0; |
| /* If we've found it, move backward until we find the character |
| * before the first letter of the previous word. */ |
| } else if (!begin_line) { |
| if (current_x == 0) |
| begin_line = TRUE; |
| else |
| current_x = move_mbleft(current->data, current_x); |
| |
| while (!begin_line) { |
| char_mb_len = parse_mbchar(current->data + current_x, |
| char_mb, NULL, NULL); |
| |
| /* If we've found it, stop moving backward through the |
| * current line. */ |
| if (!is_alnum_mbchar(char_mb)) |
| break; |
| |
| if (current_x == 0) |
| begin_line = TRUE; |
| else |
| current_x = move_mbleft(current->data, current_x); |
| } |
| |
| /* If we've found it, move forward to the first letter of the |
| * previous word. */ |
| if (!begin_line) |
| current_x += char_mb_len; |
| } |
| |
| free(char_mb); |
| |
| placewewant = xplustabs(); |
| |
| /* Update the screen. */ |
| edit_redraw(current_save, pww_save); |
| } |
| |
| void do_mark(void) |
| { |
| TOGGLE(MARK_ISSET); |
| if (ISSET(MARK_ISSET)) { |
| statusbar(_("Mark Set")); |
| mark_beginbuf = current; |
| mark_beginx = current_x; |
| } else { |
| statusbar(_("Mark UNset")); |
| edit_refresh(); |
| } |
| } |
| #endif /* !NANO_SMALL */ |
| |
| #ifndef DISABLE_WRAPPING |
| void wrap_reset(void) |
| { |
| same_line_wrap = FALSE; |
| } |
| #endif |
| |
| #ifndef DISABLE_WRAPPING |
| /* We wrap the given line. Precondition: we assume the cursor has been |
| * moved forward since the last typed character. Return value: whether |
| * we wrapped. */ |
| bool do_wrap(filestruct *line) |
| { |
| size_t line_len; |
| /* Length of the line we wrap. */ |
| ssize_t wrap_loc; |
| /* Index of line->data where we wrap. */ |
| #ifndef NANO_SMALL |
| const char *indent_string = NULL; |
| /* Indentation to prepend to the new line. */ |
| size_t indent_len = 0; /* The length of indent_string. */ |
| #endif |
| const char *after_break; /* The text after the wrap point. */ |
| size_t after_break_len; /* The length of after_break. */ |
| bool wrapping = FALSE; /* Do we prepend to the next line? */ |
| const char *next_line = NULL; |
| /* The next line, minus indentation. */ |
| size_t next_line_len = 0; /* The length of next_line. */ |
| char *new_line = NULL; /* The line we create. */ |
| size_t new_line_len = 0; /* The eventual length of new_line. */ |
| |
| /* There are three steps. First, we decide where to wrap. Then, we |
| * create the new wrap line. Finally, we clean up. */ |
| |
| /* Step 1, finding where to wrap. We are going to add a new line |
| * after a blank character. In this step, we call break_line() to |
| * get the location of the last blank we can break the line at, and |
| * and set wrap_loc to the location of the character after it, so |
| * that the blank is preserved at the end of the line. |
| * |
| * If there is no legal wrap point, or we reach the last character |
| * of the line while trying to find one, we should return without |
| * wrapping. Note that if autoindent is turned on, we don't break |
| * at the end of it! */ |
| |
| assert(line != NULL && line->data != NULL); |
| |
| /* Save the length of the line. */ |
| line_len = strlen(line->data); |
| |
| /* Find the last blank where we can break the line. */ |
| wrap_loc = break_line(line->data, fill, FALSE); |
| |
| /* If we couldn't break the line, or we've reached the end of it, we |
| * don't wrap. */ |
| if (wrap_loc == -1 || line->data[wrap_loc] == '\0') |
| return FALSE; |
| |
| /* Otherwise, move forward to the character just after the blank. */ |
| wrap_loc += move_mbright(line->data + wrap_loc, 0); |
| |
| /* If we've reached the end of the line, we don't wrap. */ |
| if (line->data[wrap_loc] == '\0') |
| return FALSE; |
| |
| #ifndef NANO_SMALL |
| /* If autoindent is turned on, and we're on the character just after |
| * the indentation, we don't wrap. */ |
| if (ISSET(AUTOINDENT)) { |
| /* Get the indentation of this line. */ |
| indent_string = line->data; |
| indent_len = indent_length(indent_string); |
| |
| if (wrap_loc == indent_len) |
| return FALSE; |
| } |
| #endif |
| |
| /* Step 2, making the new wrap line. It will consist of indentation |
| * followed by the text after the wrap point, optionally followed by |
| * a space (if the text after the wrap point doesn't end in a blank) |
| * and the text of the next line, if they can fit without |
| * wrapping, the next line exists, and the same_line_wrap flag is |
| * set. */ |
| |
| /* after_break is the text that will be wrapped to the next line. */ |
| after_break = line->data + wrap_loc; |
| after_break_len = line_len - wrap_loc; |
| |
| assert(strlen(after_break) == after_break_len); |
| |
| /* We prepend the wrapped text to the next line, if the |
| * same_line_wrap flag is set, there is a next line, and prepending |
| * would not make the line too long. */ |
| if (same_line_wrap && line->next != NULL) { |
| const char *end = after_break + move_mbleft(after_break, |
| after_break_len); |
| |
| /* If after_break doesn't end in a blank, make sure it ends in a |
| * space. */ |
| if (!is_blank_mbchar(end)) { |
| line_len++; |
| line->data = charealloc(line->data, line_len + 1); |
| line->data[line_len - 1] = ' '; |
| line->data[line_len] = '\0'; |
| after_break = line->data + wrap_loc; |
| after_break_len++; |
| totsize++; |
| } |
| |
| next_line = line->next->data; |
| next_line_len = strlen(next_line); |
| |
| if ((after_break_len + next_line_len) <= fill) { |
| wrapping = TRUE; |
| new_line_len += next_line_len; |
| } |
| } |
| |
| /* new_line_len is now the length of the text that will be wrapped |
| * to the next line, plus (if we're prepending to it) the length of |
| * the text of the next line. */ |
| new_line_len += after_break_len; |
| |
| #ifndef NANO_SMALL |
| if (ISSET(AUTOINDENT)) { |
| if (wrapping) { |
| /* If we're wrapping, the indentation will come from the |
| * next line. */ |
| indent_string = next_line; |
| indent_len = indent_length(indent_string); |
| next_line += indent_len; |
| } else { |
| /* Otherwise, it will come from this line, in which case |
| * we should increase new_line_len to make room for it. */ |
| new_line_len += indent_len; |
| totsize += mbstrnlen(indent_string, indent_len); |
| } |
| } |
| #endif |
| |
| /* Now we allocate the new line and copy the text into it. */ |
| new_line = charalloc(new_line_len + 1); |
| new_line[0] = '\0'; |
| |
| #ifndef NANO_SMALL |
| if (ISSET(AUTOINDENT)) { |
| /* Copy the indentation. */ |
| charcpy(new_line, indent_string, indent_len); |
| new_line[indent_len] = '\0'; |
| new_line_len += indent_len; |
| } |
| #endif |
| |
| /* Copy all the text after the wrap point of the current line. */ |
| strcat(new_line, after_break); |
| |
| /* Break the current line at the wrap point. */ |
| null_at(&line->data, wrap_loc); |
| |
| if (wrapping) { |
| /* If we're wrapping, copy the text from the next line, minus |
| * the indentation that we already copied above. */ |
| strcat(new_line, next_line); |
| |
| free(line->next->data); |
| line->next->data = new_line; |
| } else { |
| /* Otherwise, make a new line and copy the text after where we |
| * broke this line to the beginning of the new line. */ |
| splice_node(current, make_new_node(current), current->next); |
| |
| current->next->data = new_line; |
| |
| totlines++; |
| totsize++; |
| } |
| |
| /* Step 3, clean up. Reposition the cursor and mark, and do some |
| * other sundry things. */ |
| |
| /* Set the same_line_wrap flag, so that later wraps of this line |
| * will be prepended to the next line. */ |
| same_line_wrap = TRUE; |
| |
| /* Each line knows its line number. We recalculate these if we |
| * inserted a new line. */ |
| if (!wrapping) |
| renumber(line); |
| |
| /* If the cursor was after the break point, we must move it. We |
| * also clear the same_line_wrap flag in this case. */ |
| if (current_x > wrap_loc) { |
| same_line_wrap = FALSE; |
| current = current->next; |
| current_x -= |
| #ifndef NANO_SMALL |
| -indent_len + |
| #endif |
| wrap_loc; |
| placewewant = xplustabs(); |
| } |
| |
| #ifndef NANO_SMALL |
| /* If the mark was on this line after the wrap point, we move it |
| * down. If it was on the next line and we wrapped onto that line, |
| * we move it right. */ |
| if (mark_beginbuf == line && mark_beginx > wrap_loc) { |
| mark_beginbuf = line->next; |
| mark_beginx -= wrap_loc - indent_len + 1; |
| } else if (wrapping && mark_beginbuf == line->next) |
| mark_beginx += after_break_len; |
| #endif |
| |
| return TRUE; |
| } |
| #endif /* !DISABLE_WRAPPING */ |
| |
| #ifndef DISABLE_SPELLER |
| /* A word is misspelled in the file. Let the user replace it. We |
| * return FALSE if the user cancels. */ |
| bool do_int_spell_fix(const char *word) |
| { |
| char *save_search, *save_replace; |
| size_t current_x_save = current_x, pww_save = placewewant; |
| filestruct *edittop_save = edittop, *current_save = current; |
| /* Save where we are. */ |
| bool canceled = FALSE; |
| /* The return value. */ |
| bool case_sens_set = ISSET(CASE_SENSITIVE); |
| #ifndef NANO_SMALL |
| bool reverse_search_set = ISSET(REVERSE_SEARCH); |
| #endif |
| #ifdef HAVE_REGEX_H |
| bool regexp_set = ISSET(USE_REGEXP); |
| #endif |
| #ifndef NANO_SMALL |
| bool old_mark_set = ISSET(MARK_ISSET); |
| bool added_magicline = FALSE; |
| /* Whether we added a magicline after filebot. */ |
| bool right_side_up = FALSE; |
| /* TRUE if (mark_beginbuf, mark_beginx) is the top of the mark, |
| * FALSE if (current, current_x) is. */ |
| filestruct *top, *bot; |
| size_t top_x, bot_x; |
| #endif |
| |
| /* Make sure spell-check is case sensitive. */ |
| SET(CASE_SENSITIVE); |
| |
| #ifndef NANO_SMALL |
| /* Make sure spell-check goes forward only. */ |
| UNSET(REVERSE_SEARCH); |
| #endif |
| #ifdef HAVE_REGEX_H |
| /* Make sure spell-check doesn't use regular expressions. */ |
| UNSET(USE_REGEXP); |
| #endif |
| |
| /* Save the current search/replace strings. */ |
| search_init_globals(); |
| save_search = last_search; |
| save_replace = last_replace; |
| |
| /* Set the search/replace strings to the misspelled word. */ |
| last_search = mallocstrcpy(NULL, word); |
| last_replace = mallocstrcpy(NULL, word); |
| |
| #ifndef NANO_SMALL |
| if (old_mark_set) { |
| /* If the mark is on, partition the filestruct so that it |
| * contains only the marked text, keep track of whether the text |
| * will have a magicline added when we're done correcting |
| * misspelled words, and turn the mark off. */ |
| mark_order((const filestruct **)&top, &top_x, |
| (const filestruct **)&bot, &bot_x, &right_side_up); |
| filepart = partition_filestruct(top, top_x, bot, bot_x); |
| added_magicline = (filebot->data[0] != '\0'); |
| UNSET(MARK_ISSET); |
| } |
| #endif |
| |
| /* Start from the top of the file. */ |
| edittop = fileage; |
| current = fileage; |
| current_x = (size_t)-1; |
| placewewant = 0; |
| |
| /* Find the first whole-word occurrence of word. */ |
| findnextstr_wrap_reset(); |
| while (findnextstr(TRUE, TRUE, FALSE, fileage, 0, word, NULL)) { |
| if (is_whole_word(current_x, current->data, word)) { |
| edit_refresh(); |
| |
| do_replace_highlight(TRUE, word); |
| |
| /* Allow all instances of the word to be corrected. */ |
| canceled = (statusq(FALSE, spell_list, word, |
| #ifndef NANO_SMALL |
| NULL, |
| #endif |
| _("Edit a replacement")) == -1); |
| |
| do_replace_highlight(FALSE, word); |
| |
| if (!canceled && strcmp(word, answer) != 0) { |
| current_x--; |
| do_replace_loop(word, current, ¤t_x, TRUE, |
| &canceled); |
| } |
| |
| break; |
| } |
| } |
| |
| #ifndef NANO_SMALL |
| if (old_mark_set) { |
| /* If the mark was on and we added a magicline, remove it |
| * now. */ |
| if (added_magicline) |
| remove_magicline(); |
| |
| /* Put the beginning and the end of the mark at the beginning |
| * and the end of the spell-checked text. */ |
| if (fileage == filebot) |
| bot_x += top_x; |
| if (right_side_up) { |
| mark_beginx = top_x; |
| current_x_save = bot_x; |
| } else { |
| current_x_save = top_x; |
| mark_beginx = bot_x; |
| } |
| |
| /* Unpartition the filestruct so that it contains all the text |
| * again, and turn the mark back on. */ |
| unpartition_filestruct(&filepart); |
| SET(MARK_ISSET); |
| } |
| #endif |
| |
| /* Restore the search/replace strings. */ |
| free(last_search); |
| last_search = save_search; |
| free(last_replace); |
| last_replace = save_replace; |
| |
| /* Restore where we were. */ |
| edittop = edittop_save; |
| current = current_save; |
| current_x = current_x_save; |
| placewewant = pww_save; |
| |
| /* Restore case sensitivity setting. */ |
| if (!case_sens_set) |
| UNSET(CASE_SENSITIVE); |
| |
| #ifndef NANO_SMALL |
| /* Restore search/replace direction. */ |
| if (reverse_search_set) |
| SET(REVERSE_SEARCH); |
| #endif |
| #ifdef HAVE_REGEX_H |
| /* Restore regular expression usage setting. */ |
| if (regexp_set) |
| SET(USE_REGEXP); |
| #endif |
| |
| return !canceled; |
| } |
| |
| /* Integrated spell checking using 'spell' program. Return value: NULL |
| * for normal termination, otherwise the error string. */ |
| const char *do_int_speller(const char *tempfile_name) |
| { |
| char *read_buff, *read_buff_ptr, *read_buff_word; |
| size_t pipe_buff_size, read_buff_size, read_buff_read, bytesread; |
| int spell_fd[2], sort_fd[2], uniq_fd[2], tempfile_fd = -1; |
| pid_t pid_spell, pid_sort, pid_uniq; |
| int spell_status, sort_status, uniq_status; |
| |
| /* Create all three pipes up front. */ |
| if (pipe(spell_fd) == -1 || pipe(sort_fd) == -1 || |
| pipe(uniq_fd) == -1) |
| return _("Could not create pipe"); |
| |
| statusbar(_("Creating misspelled word list, please wait...")); |
| |
| /* A new process to run spell in. */ |
| if ((pid_spell = fork()) == 0) { |
| |
| /* Child continues (i.e, future spell process). */ |
| |
| close(spell_fd[0]); |
| |
| /* Replace the standard input with the temp file. */ |
| if ((tempfile_fd = open(tempfile_name, O_RDONLY)) == -1) |
| goto close_pipes_and_exit; |
| |
| if (dup2(tempfile_fd, STDIN_FILENO) != STDIN_FILENO) |
| goto close_pipes_and_exit; |
| |
| close(tempfile_fd); |
| |
| /* Send spell's standard output to the pipe. */ |
| if (dup2(spell_fd[1], STDOUT_FILENO) != STDOUT_FILENO) |
| goto close_pipes_and_exit; |
| |
| close(spell_fd[1]); |
| |
| /* Start spell program; we are using PATH. */ |
| execlp("spell", "spell", NULL); |
| |
| /* Should not be reached, if spell is found. */ |
| exit(1); |
| } |
| |
| /* Parent continues here. */ |
| close(spell_fd[1]); |
| |
| /* A new process to run sort in. */ |
| if ((pid_sort = fork()) == 0) { |
| |
| /* Child continues (i.e, future spell process). Replace the |
| * standard input with the standard output of the old pipe. */ |
| if (dup2(spell_fd[0], STDIN_FILENO) != STDIN_FILENO) |
| goto close_pipes_and_exit; |
| |
| close(spell_fd[0]); |
| |
| /* Send sort's standard output to the new pipe. */ |
| if (dup2(sort_fd[1], STDOUT_FILENO) != STDOUT_FILENO) |
| goto close_pipes_and_exit; |
| |
| close(sort_fd[1]); |
| |
| /* Start sort program. Use -f to remove mixed case without |
| * having to have ANOTHER pipe for tr. If this isn't portable, |
| * let me know. */ |
| execlp("sort", "sort", "-f", NULL); |
| |
| /* Should not be reached, if sort is found. */ |
| exit(1); |
| } |
| |
| close(spell_fd[0]); |
| close(sort_fd[1]); |
| |
| /* A new process to run uniq in. */ |
| if ((pid_uniq = fork()) == 0) { |
| |
| /* Child continues (i.e, future uniq process). Replace the |
| * standard input with the standard output of the old pipe. */ |
| if (dup2(sort_fd[0], STDIN_FILENO) != STDIN_FILENO) |
| goto close_pipes_and_exit; |
| |
| close(sort_fd[0]); |
| |
| /* Send uniq's standard output to the new pipe. */ |
| if (dup2(uniq_fd[1], STDOUT_FILENO) != STDOUT_FILENO) |
| goto close_pipes_and_exit; |
| |
| close(uniq_fd[1]); |
| |
| /* Start uniq program; we are using PATH. */ |
| execlp("uniq", "uniq", NULL); |
| |
| /* Should not be reached, if uniq is found. */ |
| exit(1); |
| } |
| |
| close(sort_fd[0]); |
| close(uniq_fd[1]); |
| |
| /* Child process was not forked successfully. */ |
| if (pid_spell < 0 || pid_sort < 0 || pid_uniq < 0) { |
| close(uniq_fd[0]); |
| return _("Could not fork"); |
| } |
| |
| /* Get system pipe buffer size. */ |
| if ((pipe_buff_size = fpathconf(uniq_fd[0], _PC_PIPE_BUF)) < 1) { |
| close(uniq_fd[0]); |
| return _("Could not get size of pipe buffer"); |
| } |
| |
| /* Read in the returned spelling errors. */ |
| read_buff_read = 0; |
| read_buff_size = pipe_buff_size + 1; |
| read_buff = read_buff_ptr = charalloc(read_buff_size); |
| |
| while ((bytesread = read(uniq_fd[0], read_buff_ptr, pipe_buff_size)) > 0) { |
| read_buff_read += bytesread; |
| read_buff_size += pipe_buff_size; |
| read_buff = read_buff_ptr = charealloc(read_buff, read_buff_size); |
| read_buff_ptr += read_buff_read; |
| |
| } |
| |
| *read_buff_ptr = (char)NULL; |
| close(uniq_fd[0]); |
| |
| /* Process the spelling errors. */ |
| read_buff_word = read_buff_ptr = read_buff; |
| |
| while (*read_buff_ptr != '\0') { |
| |
| if ((*read_buff_ptr == '\n') || (*read_buff_ptr == '\r')) { |
| *read_buff_ptr = (char)NULL; |
| if (read_buff_word != read_buff_ptr) { |
| if (!do_int_spell_fix(read_buff_word)) { |
| read_buff_word = read_buff_ptr; |
| break; |
| } |
| } |
| read_buff_word = read_buff_ptr + 1; |
| } |
| read_buff_ptr++; |
| } |
| |
| /* Special case where last word doesn't end with \n or \r. */ |
| if (read_buff_word != read_buff_ptr) |
| do_int_spell_fix(read_buff_word); |
| |
| free(read_buff); |
| replace_abort(); |
| edit_refresh(); |
| |
| /* Process end of spell process. */ |
| waitpid(pid_spell, &spell_status, 0); |
| waitpid(pid_sort, &sort_status, 0); |
| waitpid(pid_uniq, &uniq_status, 0); |
| |
| if (WIFEXITED(spell_status) == 0 || WEXITSTATUS(spell_status)) |
| return _("Error invoking \"spell\""); |
| |
| if (WIFEXITED(sort_status) == 0 || WEXITSTATUS(sort_status)) |
| return _("Error invoking \"sort -f\""); |
| |
| if (WIFEXITED(uniq_status) == 0 || WEXITSTATUS(uniq_status)) |
| return _("Error invoking \"uniq\""); |
| |
| /* Otherwise... */ |
| return NULL; |
| |
| close_pipes_and_exit: |
| /* Don't leak any handles. */ |
| close(tempfile_fd); |
| close(spell_fd[0]); |
| close(spell_fd[1]); |
| close(sort_fd[0]); |
| close(sort_fd[1]); |
| close(uniq_fd[0]); |
| close(uniq_fd[1]); |
| exit(1); |
| } |
| |
| /* External spell checking. Return value: NULL for normal termination, |
| * otherwise the error string. */ |
| const char *do_alt_speller(char *tempfile_name) |
| { |
| int alt_spell_status, lineno_save = current->lineno; |
| size_t current_x_save = current_x, pww_save = placewewant; |
| int current_y_save = current_y; |
| pid_t pid_spell; |
| char *ptr; |
| static int arglen = 3; |
| static char **spellargs = NULL; |
| FILE *f; |
| #ifndef NANO_SMALL |
| bool old_mark_set = ISSET(MARK_ISSET); |
| bool added_magicline = FALSE; |
| /* Whether we added a magicline after filebot. */ |
| bool right_side_up = FALSE; |
| /* TRUE if (mark_beginbuf, mark_beginx) is the top of the mark, |
| * FALSE if (current, current_x) is. */ |
| filestruct *top, *bot; |
| size_t top_x, bot_x; |
| int mbb_lineno_save = 0; |
| /* We're going to close the current file, and open the output of |
| * the alternate spell command. The line that mark_beginbuf |
| * points to will be freed, so we save the line number and |
| * restore afterwards. */ |
| size_t totsize_save = totsize; |
| /* Our saved value of totsize, used when we spell-check a marked |
| * selection. */ |
| |
| if (old_mark_set) { |
| /* If the mark is on, save the number of the line it starts on, |
| * and then turn the mark off. */ |
| mbb_lineno_save = mark_beginbuf->lineno; |
| UNSET(MARK_ISSET); |
| } |
| #endif |
| |
| endwin(); |
| |
| /* Set up an argument list to pass execvp(). */ |
| if (spellargs == NULL) { |
| spellargs = (char **)nmalloc(arglen * sizeof(char *)); |
| |
| spellargs[0] = strtok(alt_speller, " "); |
| while ((ptr = strtok(NULL, " ")) != NULL) { |
| arglen++; |
| spellargs = (char **)nrealloc(spellargs, arglen * sizeof(char *)); |
| spellargs[arglen - 3] = ptr; |
| } |
| spellargs[arglen - 1] = NULL; |
| } |
| spellargs[arglen - 2] = tempfile_name; |
| |
| /* Start a new process for the alternate speller. */ |
| if ((pid_spell = fork()) == 0) { |
| /* Start alternate spell program; we are using PATH. */ |
| execvp(spellargs[0], spellargs); |
| |
| /* Should not be reached, if alternate speller is found!!! */ |
| exit(1); |
| } |
| |
| /* Could not fork?? */ |
| if (pid_spell < 0) |
| return _("Could not fork"); |
| |
| /* Wait for alternate speller to complete. */ |
| wait(&alt_spell_status); |
| |
| if (!WIFEXITED(alt_spell_status) || |
| WEXITSTATUS(alt_spell_status) != 0) { |
| char *altspell_error = NULL; |
| char *invoke_error = _("Could not invoke \"%s\""); |
| int msglen = strlen(invoke_error) + strlen(alt_speller) + 2; |
| |
| altspell_error = charalloc(msglen); |
| snprintf(altspell_error, msglen, invoke_error, alt_speller); |
| return altspell_error; |
| } |
| |
| refresh(); |
| |
| /* Restore the terminal to its previous state. */ |
| terminal_init(); |
| |
| /* Turn the cursor back on for sure. */ |
| curs_set(1); |
| |
| #ifndef NANO_SMALL |
| if (old_mark_set) { |
| size_t part_totsize; |
| |
| /* If the mark was on, partition the filestruct so that it |
| * contains only the marked text, and keep track of whether the |
| * temp file (which should contain the spell-checked marked |
| * text) will have a magicline added when it's reloaded. */ |
| mark_order((const filestruct **)&top, &top_x, |
| (const filestruct **)&bot, &bot_x, &right_side_up); |
| filepart = partition_filestruct(top, top_x, bot, bot_x); |
| added_magicline = (filebot->data[0] != '\0'); |
| |
| /* Get the number of characters in the marked text, and subtract |
| * it from the saved value of totsize. Note that we don't need |
| * to save totlines. */ |
| get_totals(top, bot, NULL, &part_totsize); |
| totsize_save -= part_totsize; |
| } |
| #endif |
| |
| /* Reinitialize the filestruct. */ |
| free_filestruct(fileage); |
| global_init(TRUE); |
| |
| /* Reload the temp file. Do what load_buffer() would do, except for |
| * making a new buffer for the temp file if multibuffer support is |
| * available. */ |
| open_file(tempfile_name, FALSE, &f); |
| read_file(f, tempfile_name); |
| current = fileage; |
| |
| #ifndef NANO_SMALL |
| if (old_mark_set) { |
| filestruct *top_save = fileage; |
| |
| /* If the mark was on and we added a magicline, remove it |
| * now. */ |
| if (added_magicline) |
| remove_magicline(); |
| |
| /* Put the beginning and the end of the mark at the beginning |
| * and the end of the spell-checked text. */ |
| if (fileage == filebot) |
| bot_x += top_x; |
| if (right_side_up) { |
| mark_beginx = top_x; |
| current_x_save = bot_x; |
| } else { |
| current_x_save = top_x; |
| mark_beginx = bot_x; |
| } |
| |
| /* Unpartition the filestruct so that it contains all the text |
| * again. Note that we've replaced the marked text originally |
| * in the partition with the spell-checked marked text in the |
| * temp file. */ |
| unpartition_filestruct(&filepart); |
| |
| /* Renumber starting with the beginning line of the old |
| * partition. Also set totlines to the new number of lines in |
| * the file, add the number of characters in the spell-checked |
| * marked text to the saved value of totsize, and then make that |
| * saved value the actual value. */ |
| renumber(top_save); |
| totlines = filebot->lineno; |
| totsize_save += totsize; |
| totsize = totsize_save; |
| |
| /* Assign mark_beginbuf to the line where the mark began |
| * before. */ |
| do_gotopos(mbb_lineno_save, mark_beginx, current_y_save, 0); |
| mark_beginbuf = current; |
| |
| /* Assign mark_beginx to the location in mark_beginbuf where the |
| * mark began before, adjusted for any shortening of the |
| * line. */ |
| mark_beginx = current_x; |
| |
| /* Turn the mark back on. */ |
| SET(MARK_ISSET); |
| } |
| #endif |
| |
| /* Go back to the old position, mark the file as modified, and |
| * update the titlebar. */ |
| do_gotopos(lineno_save, current_x_save, current_y_save, pww_save); |
| SET(MODIFIED); |
| titlebar(NULL); |
| |
| return NULL; |
| } |
| |
| void do_spell(void) |
| { |
| int i; |
| char *temp = safe_tempnam(); |
| const char *spell_msg; |
| |
| if (temp == NULL) { |
| statusbar(_("Could not create temp file: %s"), strerror(errno)); |
| return; |
| } |
| |
| #ifndef NANO_SMALL |
| if (ISSET(MARK_ISSET)) |
| i = write_marked(temp, TRUE, FALSE); |
| else |
| #endif |
| i = write_file(temp, TRUE, FALSE, FALSE); |
| |
| if (i == -1) { |
| statusbar(_("Error writing temp file: %s"), strerror(errno)); |
| free(temp); |
| return; |
| } |
| |
| #ifdef ENABLE_MULTIBUFFER |
| /* Update the current open_files entry before spell-checking, in |
| * case any problems occur. */ |
| add_open_file(TRUE); |
| #endif |
| |
| spell_msg = (alt_speller != NULL) ? do_alt_speller(temp) : |
| do_int_speller(temp); |
| unlink(temp); |
| free(temp); |
| |
| if (spell_msg != NULL) |
| statusbar(_("Spell checking failed: %s: %s"), spell_msg, |
| strerror(errno)); |
| else |
| statusbar(_("Finished checking spelling")); |
| } |
| #endif /* !DISABLE_SPELLER */ |
| |
| #if !defined(DISABLE_HELP) || !defined(DISABLE_JUSTIFY) || !defined(DISABLE_WRAPPING) |
| /* We are trying to break a chunk off line. We find the last blank such |
| * that the display length to there is at most goal + 1. If there is no |
| * such blank, then we find the first blank. We then take the last |
| * blank in that group of blanks. The terminating '\0' counts as a |
| * blank, as does a '\n' if newline is TRUE. */ |
| ssize_t break_line(const char *line, ssize_t goal, bool newline) |
| { |
| ssize_t blank_loc = -1; |
| /* Current tentative return value. Index of the last blank we |
| * found with short enough display width. */ |
| ssize_t cur_loc = 0; |
| /* Current index in line. */ |
| int line_len; |
| |
| assert(line != NULL); |
| |
| while (*line != '\0' && goal >= 0) { |
| size_t pos = 0; |
| |
| line_len = parse_mbchar(line, NULL, NULL, &pos); |
| |
| if (is_blank_mbchar(line) || (newline && *line == '\n')) { |
| blank_loc = cur_loc; |
| |
| if (newline && *line == '\n') |
| break; |
| } |
| |
| goal -= pos; |
| line += line_len; |
| cur_loc += line_len; |
| } |
| |
| if (goal >= 0) |
| /* In fact, the whole line displays shorter than goal. */ |
| return cur_loc; |
| |
| if (blank_loc == -1) { |
| /* No blank was found that was short enough. */ |
| bool found_blank = FALSE; |
| |
| while (*line != '\0') { |
| line_len = parse_mbchar(line, NULL, NULL, NULL); |
| |
| if (is_blank_mbchar(line) || (newline && *line == '\n')) { |
| if (!found_blank) |
| found_blank = TRUE; |
| } else if (found_blank) |
| return cur_loc - line_len; |
| |
| line += line_len; |
| cur_loc += line_len; |
| } |
| |
| return -1; |
| } |
| |
| /* Move to the last blank after blank_loc, if there is one. */ |
| line -= cur_loc; |
| line += blank_loc; |
| line_len = parse_mbchar(line, NULL, NULL, NULL); |
| line += line_len; |
| |
| while (*line != '\0' && (is_blank_mbchar(line) || |
| (newline && *line == '\n'))) { |
| line_len = parse_mbchar(line, NULL, NULL, NULL); |
| |
| line += line_len; |
| blank_loc += line_len; |
| } |
| |
| return blank_loc; |
| } |
| #endif /* !DISABLE_HELP || !DISABLE_JUSTIFY || !DISABLE_WRAPPING */ |
| |
| #if !defined(NANO_SMALL) || !defined(DISABLE_JUSTIFY) |
| /* The "indentation" of a line is the whitespace between the quote part |
| * and the non-whitespace of the line. */ |
| size_t indent_length(const char *line) |
| { |
| size_t len = 0; |
| char *blank_mb; |
| int blank_mb_len; |
| |
| assert(line != NULL); |
| |
| blank_mb = charalloc(mb_cur_max()); |
| |
| while (*line != '\0') { |
| blank_mb_len = parse_mbchar(line, blank_mb, NULL, NULL); |
| |
| if (!is_blank_mbchar(blank_mb)) |
| break; |
| |
| line += blank_mb_len; |
| len += blank_mb_len; |
| } |
| |
| free(blank_mb); |
| |
| return len; |
| } |
| #endif /* !NANO_SMALL || !DISABLE_JUSTIFY */ |
| |
| #ifndef DISABLE_JUSTIFY |
| /* justify_format() replaces blanks with spaces and multiple spaces by 1 |
| * (except it maintains up to 2 after a character in punct optionally |
| * followed by a character in brackets, and removes all from the end). |
| * |
| * justify_format() might make paragraph->data shorter, and change the |
| * actual pointer with null_at(). |
| * |
| * justify_format() will not look at the first skip characters of |
| * paragraph. skip should be at most strlen(paragraph->data). The |
| * character at paragraph[skip + 1] must not be blank. */ |
| void justify_format(filestruct *paragraph, size_t skip) |
| { |
| char *end, *new_end, *new_paragraph_data; |
| size_t shift = 0; |
| #ifndef NANO_SMALL |
| size_t mark_shift = 0; |
| #endif |
| |
| /* These four asserts are assumptions about the input data. */ |
| assert(paragraph != NULL); |
| assert(paragraph->data != NULL); |
| assert(skip < strlen(paragraph->data)); |
| assert(!is_blank_char(paragraph->data[skip])); |
| |
| end = paragraph->data + skip; |
| new_paragraph_data = charalloc(strlen(paragraph->data) + 1); |
| charcpy(new_paragraph_data, paragraph->data, skip); |
| new_end = new_paragraph_data + skip; |
| |
| while (*end != '\0') { |
| int end_len; |
| |
| /* If this character is blank, make sure that it's a space with |
| * no blanks after it. */ |
| if (is_blank_mbchar(end)) { |
| end_len = parse_mbchar(end, NULL, NULL, NULL); |
| |
| *new_end = ' '; |
| new_end++; |
| end += end_len; |
| |
| while (*end != '\0' && is_blank_mbchar(end)) { |
| end_len = parse_mbchar(end, NULL, NULL, NULL); |
| |
| end += end_len; |
| shift += end_len; |
| |
| #ifndef NANO_SMALL |
| /* Keep track of the change in the current line. */ |
| if (mark_beginbuf == paragraph && |
| mark_beginx >= end - paragraph->data) |
| mark_shift += end_len; |
| #endif |
| } |
| /* If this character is punctuation optionally followed by a |
| * bracket and then followed by blanks, make sure there are no |
| * more than two blanks after it, and make sure that the blanks |
| * are spaces. */ |
| } else if (mbstrchr(punct, end) != NULL) { |
| end_len = parse_mbchar(end, NULL, NULL, NULL); |
| |
| while (end_len > 0) { |
| *new_end = *end; |
| new_end++; |
| end++; |
| end_len--; |
| } |
| |
| if (*end != '\0' && mbstrchr(brackets, end) != NULL) { |
| end_len = parse_mbchar(end, NULL, NULL, NULL); |
| |
| while (end_len > 0) { |
| *new_end = *end; |
| new_end++; |
| end++; |
| end_len--; |
| } |
| } |
| |
| if (*end != '\0' && is_blank_mbchar(end)) { |
| end_len = parse_mbchar(end, NULL, NULL, NULL); |
| |
| *new_end = ' '; |
| new_end++; |
| end += end_len; |
| } |
| |
| if (*end != '\0' && is_blank_mbchar(end)) { |
| end_len = parse_mbchar(end, NULL, NULL, NULL); |
| |
| *new_end = ' '; |
| new_end++; |
| end += end_len; |
| } |
| |
| while (*end != '\0' && is_blank_mbchar(end)) { |
| end_len = parse_mbchar(end, NULL, NULL, NULL); |
| |
| end += end_len; |
| shift += end_len; |
| |
| #ifndef NANO_SMALL |
| /* Keep track of the change in the current line. */ |
| if (mark_beginbuf == paragraph && |
| mark_beginx >= end - paragraph->data) |
| mark_shift += end_len; |
| #endif |
| } |
| /* If this character is neither blank nor punctuation, leave it |
| * alone. */ |
| } else { |
| end_len = parse_mbchar(end, NULL, NULL, NULL); |
| |
| while (end_len > 0) { |
| *new_end = *end; |
| new_end++; |
| end++; |
| end_len--; |
| } |
| } |
| } |
| |
| assert(*end == '\0'); |
| |
| *new_end = *end; |
| |
| /* Make sure that there are no spaces at the end of the line. */ |
| while (new_end > new_paragraph_data + skip && |
| *(new_end - 1) == ' ') { |
| new_end--; |
| shift++; |
| } |
| |
| if (shift > 0) { |
| totsize -= shift; |
| null_at(&new_paragraph_data, new_end - new_paragraph_data); |
| free(paragraph->data); |
| paragraph->data = new_paragraph_data; |
| |
| #ifndef NANO_SMALL |
| /* Adjust the mark coordinates to compensate for the change in |
| * the current line. */ |
| if (mark_beginbuf == paragraph) { |
| mark_beginx -= mark_shift; |
| if (mark_beginx > new_end - new_paragraph_data) |
| mark_beginx = new_end - new_paragraph_data; |
| } |
| #endif |
| } else |
| free(new_paragraph_data); |
| } |
| |
| /* The "quote part" of a line is the largest initial substring matching |
| * the quote string. This function returns the length of the quote part |
| * of the given line. |
| * |
| * Note that if !HAVE_REGEX_H then we match concatenated copies of |
| * quotestr. */ |
| size_t quote_length(const char *line) |
| { |
| #ifdef HAVE_REGEX_H |
| regmatch_t matches; |
| int rc = regexec("ereg, line, 1, &matches, 0); |
| |
| if (rc == REG_NOMATCH || matches.rm_so == (regoff_t)-1) |
| return 0; |
| /* matches.rm_so should be 0, since the quote string should start |
| * with the caret ^. */ |
| return matches.rm_eo; |
| #else /* !HAVE_REGEX_H */ |
| size_t qdepth = 0; |
| |
| /* Compute quote depth level. */ |
| while (strncmp(line + qdepth, quotestr, quotelen) == 0) |
| qdepth += quotelen; |
| return qdepth; |
| #endif /* !HAVE_REGEX_H */ |
| } |
| |
| /* a_line and b_line are lines of text. The quotation part of a_line is |
| * the first a_quote characters. Check that the quotation part of |
| * b_line is the same. */ |
| bool quotes_match(const char *a_line, size_t a_quote, const char |
| *b_line) |
| { |
| /* Here is the assumption about a_quote. */ |
| assert(a_quote == quote_length(a_line)); |
| |
| return (a_quote == quote_length(b_line) && |
| strncmp(a_line, b_line, a_quote) == 0); |
| } |
| |
| /* We assume a_line and b_line have no quote part. Then, we return |
| * whether b_line could follow a_line in a paragraph. */ |
| bool indents_match(const char *a_line, size_t a_indent, const char |
| *b_line, size_t b_indent) |
| { |
| assert(a_indent == indent_length(a_line)); |
| assert(b_indent == indent_length(b_line)); |
| |
| return (b_indent <= a_indent && |
| strncmp(a_line, b_line, b_indent) == 0); |
| } |
| |
| /* Is foo the beginning of a paragraph? |
| * |
| * A line of text consists of a "quote part", followed by an |
| * "indentation part", followed by text. The functions quote_length() |
| * and indent_length() calculate these parts. |
| * |
| * A line is "part of a paragraph" if it has a part not in the quote |
| * part or the indentation. |
| * |
| * A line is "the beginning of a paragraph" if it is part of a |
| * paragraph and |
| * 1) it is the top line of the file, or |
| * 2) the line above it is not part of a paragraph, or |
| * 3) the line above it does not have precisely the same quote |
| * part, or |
| * 4) the indentation of this line is not an initial substring of |
| * the indentation of the previous line, or |
| * 5) this line has no quote part and some indentation, and |
| * autoindent isn't turned on. |
| * The reason for number 5) is that if autoindent isn't turned on, |
| * then an indented line is expected to start a paragraph, as in |
| * books. Thus, nano can justify an indented paragraph only if |
| * autoindent is turned on. */ |
| bool begpar(const filestruct *const foo) |
| { |
| size_t quote_len; |
| size_t indent_len; |
| size_t temp_id_len; |
| |
| /* Case 1). */ |
| if (foo->prev == NULL) |
| return TRUE; |
| |
| quote_len = quote_length(foo->data); |
| indent_len = indent_length(foo->data + quote_len); |
| |
| /* Not part of a paragraph. */ |
| if (foo->data[quote_len + indent_len] == '\0') |
| return FALSE; |
| |
| /* Case 3). */ |
| if (!quotes_match(foo->data, quote_len, foo->prev->data)) |
| return TRUE; |
| |
| temp_id_len = indent_length(foo->prev->data + quote_len); |
| |
| /* Case 2) or 5) or 4). */ |
| if (foo->prev->data[quote_len + temp_id_len] == '\0' || |
| (quote_len == 0 && indent_len > 0 |
| #ifndef NANO_SMALL |
| && !ISSET(AUTOINDENT) |
| #endif |
| ) || !indents_match(foo->prev->data + quote_len, temp_id_len, |
| foo->data + quote_len, indent_len)) |
| return TRUE; |
| |
| return FALSE; |
| } |
| |
| /* We find the last beginning-of-paragraph line before the current |
| * line. */ |
| void do_para_begin(bool allow_update) |
| { |
| const filestruct *current_save = current; |
| const size_t pww_save = placewewant; |
| |
| current_x = 0; |
| placewewant = 0; |
| |
| if (current->prev != NULL) { |
| do { |
| current = current->prev; |
| current_y--; |
| } while (!begpar(current)); |
| } |
| |
| if (allow_update) |
| edit_redraw(current_save, pww_save); |
| } |
| |
| void do_para_begin_void(void) |
| { |
| do_para_begin(TRUE); |
| } |
| |
| /* Is foo inside a paragraph? */ |
| bool inpar(const filestruct *const foo) |
| { |
| size_t quote_len; |
| |
| if (foo == NULL) |
| return FALSE; |
| |
| quote_len = quote_length(foo->data); |
| |
| return foo->data[quote_len + indent_length(foo->data + |
| quote_len)] != '\0'; |
| } |
| |
| /* A line is the last line of a paragraph if it is in a paragraph, and |
| * the next line isn't, or is the beginning of a paragraph. We move |
| * down to the end of a paragraph, then one line farther. */ |
| void do_para_end(bool allow_update) |
| { |
| const filestruct *const current_save = current; |
| const size_t pww_save = placewewant; |
| |
| current_x = 0; |
| placewewant = 0; |
| |
| while (current->next != NULL && !inpar(current)) |
| current = current->next; |
| |
| while (current->next != NULL && inpar(current->next) && |
| !begpar(current->next)) { |
| current = current->next; |
| current_y++; |
| } |
| |
| if (current->next != NULL) |
| current = current->next; |
| |
| if (allow_update) |
| edit_redraw(current_save, pww_save); |
| } |
| |
| void do_para_end_void(void) |
| { |
| do_para_end(TRUE); |
| } |
| |
| /* Put the next par_len lines, starting with first_line, into the |
| * justify buffer, leaving copies of those lines in place. Assume there |
| * are enough lines after first_line. Return the new copy of |
| * first_line. */ |
| filestruct *backup_lines(filestruct *first_line, size_t par_len, size_t |
| quote_len) |
| { |
| filestruct *top = first_line; |
| /* The top of the paragraph we're backing up. */ |
| filestruct *bot = first_line; |
| /* The bottom of the paragraph we're backing up. */ |
| size_t i; |
| /* Generic loop variable. */ |
| size_t current_x_save = current_x; |
| int fl_lineno_save = first_line->lineno; |
| int edittop_lineno_save = edittop->lineno; |
| int current_lineno_save = current->lineno; |
| #ifndef NANO_SMALL |
| bool old_mark_set = ISSET(MARK_ISSET); |
| int mbb_lineno_save = 0; |
| size_t mark_beginx_save = 0; |
| |
| if (old_mark_set) { |
| mbb_lineno_save = mark_beginbuf->lineno; |
| mark_beginx_save = mark_beginx; |
| } |
| #endif |
| |
| /* Move bot down par_len lines to the newline after the last line of |
| * the paragraph. */ |
| for (i = par_len; i > 0; i--) |
| bot = bot->next; |
| |
| /* Move the paragraph from the main filestruct to the justify |
| * buffer. */ |
| move_to_filestruct(&jusbuffer, &jusbottom, top, 0, bot, 0); |
| |
| /* Copy the paragraph from the justify buffer to the main |
| * filestruct. */ |
| copy_from_filestruct(jusbuffer, jusbottom); |
| |
| /* Move upward from the last line of the paragraph to the first |
| * line, putting first_line, edittop, current, and mark_beginbuf at |
| * the same lines in the copied paragraph that they had in the |
| * original paragraph. */ |
| top = current->prev; |
| for (i = par_len; i > 0; i--) { |
| if (top->lineno == fl_lineno_save) |
| first_line = top; |
| if (top->lineno == edittop_lineno_save) |
| edittop = top; |
| if (top->lineno == current_lineno_save) |
| current = top; |
| #ifndef NANO_SMALL |
| if (old_mark_set && top->lineno == mbb_lineno_save) { |
| mark_beginbuf = top; |
| mark_beginx = mark_beginx_save; |
| } |
| #endif |
| top = top->prev; |
| } |
| |
| /* Put current_x at the same place in the copied paragraph that it |
| * had in the original paragraph. */ |
| current_x = current_x_save; |
| |
| set_modified(); |
| |
| return first_line; |
| } |
| |
| /* Find the beginning of the current paragraph if we're in one, or the |
| * beginning of the next paragraph if we're not. Afterwards, save the |
| * quote length and paragraph length in *quote and *par. Return TRUE if |
| * we found a paragraph, or FALSE if there was an error or we didn't |
| * find a paragraph. |
| * |
| * See the comment at begpar() for more about when a line is the |
| * beginning of a paragraph. */ |
| bool find_paragraph(size_t *const quote, size_t *const par) |
| { |
| size_t quote_len; |
| /* Length of the initial quotation of the paragraph we search |
| * for. */ |
| size_t par_len; |
| /* Number of lines in the paragraph we search for. */ |
| filestruct *current_save; |
| /* The line at the beginning of the paragraph we search for. */ |
| size_t current_y_save; |
| /* The y-coordinate at the beginning of the paragraph we search |
| * for. */ |
| |
| #ifdef HAVE_REGEX_H |
| if (quoterc != 0) { |
| statusbar(_("Bad quote string %s: %s"), quotestr, quoteerr); |
| return FALSE; |
| } |
| #endif |
| |
| assert(current != NULL); |
| |
| /* Move back to the beginning of the current line. */ |
| current_x = 0; |
| |
| /* Find the first line of the current or next paragraph. First, if |
| * the current line isn't in a paragraph, move forward to the line |
| * after the last line of the next paragraph. If we end up on the |
| * same line, or the line before that isn't in a paragraph, it means |
| * that there aren't any paragraphs left, so get out. Otherwise, |
| * move back to the last line of the paragraph. If the current line |
| * is in a paragraph and it isn't the first line of that paragraph, |
| * move back to the first line. */ |
| if (!inpar(current)) { |
| filestruct *current_save = current; |
| |
| do_para_end(FALSE); |
| if (current == current_save || !inpar(current->prev)) |
| return FALSE; |
| if (current->prev != NULL) |
| current = current->prev; |
| } |
| if (!begpar(current)) |
| do_para_begin(FALSE); |
| |
| /* Now current is the first line of the paragraph. Set quote_len to |
| * the quotation length of that line, and set par_len to the number |
| * of lines in this paragraph. */ |
| quote_len = quote_length(current->data); |
| current_save = current; |
| current_y_save = current_y; |
| do_para_end(FALSE); |
| par_len = current->lineno - current_save->lineno; |
| current = current_save; |
| current_y = current_y_save; |
| |
| /* Save the values of quote_len and par_len. */ |
| assert(quote != NULL && par != NULL); |
| |
| *quote = quote_len; |
| *par = par_len; |
| |
| return TRUE; |
| } |
| |
| /* If full_justify is TRUE, justify the entire file. Otherwise, justify |
| * the current paragraph. */ |
| void do_justify(bool full_justify) |
| { |
| filestruct *first_par_line = NULL; |
| /* Will be the first line of the resulting justified paragraph. |
| * For restoring after unjustify. */ |
| filestruct *last_par_line; |
| /* Will be the line containing the newline after the last line |
| * of the result. Also for restoring after unjustify. */ |
| |
| /* We save these global variables to be restored if the user |
| * unjustifies. Note that we don't need to save totlines. */ |
| size_t current_x_save = current_x; |
| int current_y_save = current_y; |
| unsigned long flags_save = flags; |
| size_t totsize_save = totsize; |
| filestruct *edittop_save = edittop, *current_save = current; |
| #ifndef NANO_SMALL |
| filestruct *mark_beginbuf_save = mark_beginbuf; |
| size_t mark_beginx_save = mark_beginx; |
| #endif |
| int kbinput; |
| bool meta_key, func_key, s_or_t, ran_func, finished; |
| |
| /* If we're justifying the entire file, start at the beginning. */ |
| if (full_justify) |
| current = fileage; |
| |
| last_par_line = current; |
| |
| while (TRUE) { |
| size_t i; |
| /* Generic loop variable. */ |
| size_t quote_len; |
| /* Length of the initial quotation of the paragraph we |
| * justify. */ |
| size_t indent_len; |
| /* Length of the initial indentation of the paragraph we |
| * justify. */ |
| size_t par_len; |
| /* Number of lines in the paragraph we justify. */ |
| ssize_t break_pos; |
| /* Where we will break lines. */ |
| char *indent_string; |
| /* The first indentation that doesn't match the initial |
| * indentation of the paragraph we justify. This is put at |
| * the beginning of every line broken off the first |
| * justified line of the paragraph. (Note that this works |
| * because a paragraph can only contain two indentations at |
| * most: the initial one, and a different one starting on a |
| * line after the first. See the comment at begpar() for |
| * more about when a line is part of a paragraph.) */ |
| |
| /* Find the first line of the paragraph to be justified. That |
| * is the start of this paragraph if we're in one, or the start |
| * of the next otherwise. Save the quote length and paragraph |
| * length (number of lines). Don't refresh the screen yet, |
| * since we'll do that after we justify. |
| * |
| * If the search failed, we do one of two things. If we're |
| * justifying the whole file, we've found at least one |
| * paragraph, and the search didn't leave us on the last line of |
| * the file, it means that we should justify all the way to the |
| * last line of the file, so set the last line of the text to be |
| * justified to the last line of the file and break out of the |
| * loop. Otherwise, it means that there are no paragraph(s) to |
| * justify, so refresh the screen and get out. */ |
| if (!find_paragraph("e_len, &par_len)) { |
| if (full_justify && first_par_line != NULL && |
| first_par_line != filebot) { |
| last_par_line = filebot; |
| break; |
| } else { |
| edit_refresh(); |
| return; |
| } |
| } |
| |
| /* If we haven't already done it, copy the original paragraph(s) |
| * to the justify buffer. */ |
| if (first_par_line == NULL) |
| first_par_line = backup_lines(current, full_justify ? |
| filebot->lineno - current->lineno : par_len, quote_len); |
| |
| /* Initialize indent_string to a blank string. */ |
| indent_string = mallocstrcpy(NULL, ""); |
| |
| /* Find the first indentation in the paragraph that doesn't |
| * match the indentation of the first line, and save it in |
| * indent_string. If all the indentations are the same, save |
| * the indentation of the first line in indent_string. */ |
| { |
| const filestruct *indent_line = current; |
| bool past_first_line = FALSE; |
| |
| for (i = 0; i < par_len; i++) { |
| indent_len = quote_len + |
| indent_length(indent_line->data + quote_len); |
| |
| if (indent_len != strlen(indent_string)) { |
| indent_string = mallocstrncpy(indent_string, |
| indent_line->data, indent_len + 1); |
| indent_string[indent_len] = '\0'; |
| |
| if (past_first_line) |
| break; |
| } |
| |
| if (indent_line == current) |
| past_first_line = TRUE; |
| |
| indent_line = indent_line->next; |
| } |
| } |
| |
| /* Now tack all the lines of the paragraph together, skipping |
| * the quoting and indentation on all lines after the first. */ |
| for (i = 0; i < par_len - 1; i++) { |
| filestruct *next_line = current->next; |
| size_t line_len = strlen(current->data); |
| size_t next_line_len = strlen(current->next->data); |
| |
| indent_len = quote_len + indent_length(current->next->data + |
| quote_len); |
| |
| next_line_len -= indent_len; |
| totsize -= indent_len; |
| |
| /* We're just about to tack the next line onto this one. If |
| * this line isn't empty, make sure it ends in a space. */ |
| if (line_len > 0 && current->data[line_len - 1] != ' ') { |
| line_len++; |
| current->data = charealloc(current->data, line_len + 1); |
| current->data[line_len - 1] = ' '; |
| current->data[line_len] = '\0'; |
| totsize++; |
| } |
| |
| current->data = charealloc(current->data, line_len + |
| next_line_len + 1); |
| strcat(current->data, next_line->data + indent_len); |
| |
| /* Don't destroy edittop! */ |
| if (edittop == next_line) |
| edittop = current; |
| |
| #ifndef NANO_SMALL |
| /* Adjust the mark coordinates to compensate for the change |
| * in the next line. */ |
| if (mark_beginbuf == next_line) { |
| mark_beginbuf = current; |
| mark_beginx += line_len - indent_len; |
| } |
| #endif |
| |
| unlink_node(next_line); |
| delete_node(next_line); |
| |
| /* If we've removed the next line, we need to go through |
| * this line again. */ |
| i--; |
| |
| par_len--; |
| totlines--; |
| totsize--; |
| } |
| |
| /* Call justify_format() on the paragraph, which will remove |
| * excess spaces from it and change all blank characters to |
| * spaces. */ |
| justify_format(current, quote_len + |
| indent_length(current->data + quote_len)); |
| |
| while (par_len > 0 && strlenpt(current->data) > fill) { |
| size_t line_len = strlen(current->data); |
| |
| indent_len = strlen(indent_string); |
| |
| /* If this line is too long, try to wrap it to the next line |
| * to make it short enough. */ |
| break_pos = break_line(current->data + indent_len, |
| fill - strnlenpt(current->data, indent_len), FALSE); |
| |
| /* We can't break the line, or don't need to, so get out. */ |
| if (break_pos == -1 || break_pos + indent_len == line_len) |
| break; |
| |
| /* Move forward to the character after the indentation and |
| * just after the space. */ |
| break_pos += indent_len + 1; |
| |
| assert(break_pos <= line_len); |
| |
| /* Make a new line, and copy the text after where we're |
| * going to break this line to the beginning of the new |
| * line. */ |
| splice_node(current, make_new_node(current), current->next); |
| |
| /* If this paragraph is non-quoted, and autoindent isn't |
| * turned on, set the indentation length to zero so that the |
| * indentation is treated as part of the line. */ |
| if (quote_len == 0 |
| #ifndef NANO_SMALL |
| && !ISSET(AUTOINDENT) |
| #endif |
| ) |
| indent_len = 0; |
| |
| /* Copy the text after where we're going to break the |
| * current line to the next line. */ |
| current->next->data = charalloc(indent_len + 1 + line_len - |
| break_pos); |
| charcpy(current->next->data, indent_string, indent_len); |
| strcpy(current->next->data + indent_len, current->data + |
| break_pos); |
| |
| par_len++; |
| totlines++; |
| totsize += indent_len + 1; |
| |
| #ifndef NANO_SMALL |
| /* Adjust the mark coordinates to compensate for the change |
| * in the current line. */ |
| if (mark_beginbuf == current && mark_beginx > break_pos) { |
| mark_beginbuf = current->next; |
| mark_beginx -= break_pos - indent_len; |
| } |
| #endif |
| |
| /* Break the current line. */ |
| null_at(¤t->data, break_pos); |
| |
| /* Go to the next line. */ |
| par_len--; |
| current_y++; |
| current = current->next; |
| } |
| |
| /* We're done breaking lines, so we don't need indent_string |
| * anymore. */ |
| free(indent_string); |
| |
| /* Go to the next line, the line after the last line of the |
| * paragraph. */ |
| current_y++; |
| current = current->next; |
| |
| /* We've just justified a paragraph. If we're not justifying the |
| * entire file, break out of the loop. Otherwise, continue the |
| * loop so that we justify all the paragraphs in the file. */ |
| if (!full_justify) |
| break; |
| } |
| |
| /* We are now done justifying the paragraph or the file, so clean |
| * up. totlines, totsize, and current_y have been maintained above. |
| * Set last_par_line to the new end of the paragraph, update |
| * fileage, and renumber() since edit_refresh() needs the line |
| * numbers to be right (but only do the last two if we actually |
| * justified something). */ |
| last_par_line = current; |
| if (first_par_line != NULL) { |
| if (first_par_line->prev == NULL) |
| fileage = first_par_line; |
| renumber(first_par_line); |
| } |
| |
| edit_refresh(); |
| |
| statusbar(_("Can now UnJustify!")); |
| |
| /* Display the shortcut list with UnJustify. */ |
| shortcut_init(TRUE); |
| display_main_list(); |
| |
| /* Now get a keystroke and see if it's unjustify. If not, put back |
| * the keystroke and return. */ |
| kbinput = do_input(&meta_key, &func_key, &s_or_t, &ran_func, |
| &finished, FALSE); |
| |
| if (!meta_key && !func_key && s_or_t && |
| kbinput == NANO_UNJUSTIFY_KEY) { |
| /* Restore the justify we just did (ungrateful user!). */ |
| current = current_save; |
| current_x = current_x_save; |
| current_y = current_y_save; |
| edittop = edittop_save; |
| |
| /* Splice the justify buffer back into the file, but only if we |
| * actually justified something. */ |
| if (first_par_line != NULL) { |
| filestruct *bot_save; |
| |
| /* Partition the filestruct so that it contains only the |
| * text of the justified paragraph. */ |
| filepart = partition_filestruct(first_par_line, 0, |
| last_par_line, 0); |
| |
| /* Remove the text of the justified paragraph, and |
| * put the text in the justify buffer in its place. */ |
| free_filestruct(fileage); |
| fileage = jusbuffer; |
| filebot = jusbottom; |
| |
| bot_save = filebot; |
| |
| /* Unpartition the filestruct so that it contains all the |
| * text again. Note that the justified paragraph has been |
| * replaced with the unjustified paragraph. */ |
| unpartition_filestruct(&filepart); |
| |
| /* Renumber starting with the ending line of the old |
| * partition. */ |
| if (bot_save->next != NULL) |
| renumber(bot_save->next); |
| |
| /* Restore global variables from before the justify. */ |
| totsize = totsize_save; |
| totlines = filebot->lineno; |
| #ifndef NANO_SMALL |
| mark_beginbuf = mark_beginbuf_save; |
| mark_beginx = mark_beginx_save; |
| #endif |
| flags = flags_save; |
| |
| /* Clear the justify buffer. */ |
| jusbuffer = NULL; |
| |
| if (!ISSET(MODIFIED)) |
| titlebar(NULL); |
| edit_refresh(); |
| } |
| } else { |
| unget_kbinput(kbinput, meta_key, func_key); |
| |
| /* Blow away the text in the justify buffer. */ |
| free_filestruct(jusbuffer); |
| jusbuffer = NULL; |
| } |
| |
| blank_statusbar(); |
| |
| /* Display the shortcut list with UnCut. */ |
| shortcut_init(FALSE); |
| display_main_list(); |
| } |
| |
| void do_justify_void(void) |
| { |
| do_justify(FALSE); |
| } |
| |
| void do_full_justify(void) |
| { |
| do_justify(TRUE); |
| } |
| #endif /* !DISABLE_JUSTIFY */ |
| |
| void do_exit(void) |
| { |
| int i; |
| |
| if (!ISSET(MODIFIED)) |
| i = 0; /* Pretend the user chose not to save. */ |
| else if (ISSET(TEMP_FILE)) |
| i = 1; |
| else |
| i = do_yesno(FALSE, |
| _("Save modified buffer (ANSWERING \"No\" WILL DESTROY CHANGES) ? ")); |
| |
| #ifdef DEBUG |
| dump_buffer(fileage); |
| #endif |
| |
| if (i == 0 || (i == 1 && do_writeout(TRUE) > 0)) { |
| #ifdef ENABLE_MULTIBUFFER |
| /* Exit only if there are no more open file buffers. */ |
| if (!close_open_file()) |
| #endif |
| finish(); |
| } else if (i != 1) |
| statusbar(_("Cancelled")); |
| |
| display_main_list(); |
| } |
| |
| void signal_init(void) |
| { |
| /* Trap SIGINT and SIGQUIT because we want them to do useful |
| * things. */ |
| memset(&act, 0, sizeof(struct sigaction)); |
| act.sa_handler = SIG_IGN; |
| sigaction(SIGINT, &act, NULL); |
| sigaction(SIGQUIT, &act, NULL); |
| |
| /* Trap SIGHUP and SIGTERM because we want to write the file out. */ |
| act.sa_handler = handle_hupterm; |
| sigaction(SIGHUP, &act, NULL); |
| sigaction(SIGTERM, &act, NULL); |
| |
| #ifndef NANO_SMALL |
| /* Trap SIGWINCH because we want to handle window resizes. */ |
| act.sa_handler = handle_sigwinch; |
| sigaction(SIGWINCH, &act, NULL); |
| allow_pending_sigwinch(FALSE); |
| #endif |
| |
| /* Trap normal suspend (^Z) so we can handle it ourselves. */ |
| if (!ISSET(SUSPEND)) { |
| act.sa_handler = SIG_IGN; |
| sigaction(SIGTSTP, &act, NULL); |
| } else { |
| /* Block all other signals in the suspend and continue handlers. |
| * If we don't do this, other stuff interrupts them! */ |
| sigfillset(&act.sa_mask); |
| |
| act.sa_handler = do_suspend; |
| sigaction(SIGTSTP, &act, NULL); |
| |
| act.sa_handler = do_cont; |
| sigaction(SIGCONT, &act, NULL); |
| } |
| } |
| |
| /* Handler for SIGHUP (hangup) and SIGTERM (terminate). */ |
| void handle_hupterm(int signal) |
| { |
| die(_("Received SIGHUP or SIGTERM\n")); |
| } |
| |
| /* Handler for SIGTSTP (suspend). */ |
| void do_suspend(int signal) |
| { |
| endwin(); |
| printf("\n\n\n\n\n%s\n", _("Use \"fg\" to return to nano")); |
| fflush(stdout); |
| |
| /* Restore the old terminal settings. */ |
| tcsetattr(0, TCSANOW, &oldterm); |
| |
| /* Trap SIGHUP and SIGTERM so we can properly deal with them while |
| * suspended. */ |
| act.sa_handler = handle_hupterm; |
| sigaction(SIGHUP, &act, NULL); |
| sigaction(SIGTERM, &act, NULL); |
| |
| /* Do what mutt does: send ourselves a SIGSTOP. */ |
| kill(0, SIGSTOP); |
| } |
| |
| /* Handler for SIGCONT (continue after suspend). */ |
| void do_cont(int signal) |
| { |
| #ifndef NANO_SMALL |
| /* Perhaps the user resized the window while we slept. Handle it |
| * and update the screen in the process. */ |
| handle_sigwinch(0); |
| #else |
| /* Just update the screen. */ |
| doupdate(); |
| #endif |
| } |
| |
| #ifndef NANO_SMALL |
| void handle_sigwinch(int s) |
| { |
| const char *tty = ttyname(0); |
| int fd, result = 0; |
| struct winsize win; |
| |
| if (tty == NULL) |
| return; |
| fd = open(tty, O_RDWR); |
| if (fd == -1) |
| return; |
| result = ioctl(fd, TIOCGWINSZ, &win); |
| close(fd); |
| if (result == -1) |
| return; |
| |
| /* Could check whether the COLS or LINES changed, and return |
| * otherwise. EXCEPT, that COLS and LINES are ncurses global |
| * variables, and in some cases ncurses has already updated them. |
| * But not in all cases, argh. */ |
| COLS = win.ws_col; |
| LINES = win.ws_row; |
| |
| check_die_too_small(); |
| resize_variables(); |
| |
| /* If we've partitioned the filestruct, unpartition it now. */ |
| if (filepart != NULL) |
| unpartition_filestruct(&filepart); |
| |
| #ifndef DISABLE_JUSTIFY |
| /* If the justify buffer isn't empty, blow away the text in it and |
| * display the shortcut list with UnCut. */ |
| if (jusbuffer != NULL) { |
| free_filestruct(jusbuffer); |
| jusbuffer = NULL; |
| shortcut_init(FALSE); |
| } |
| #endif |
| |
| #ifdef USE_SLANG |
| /* Slang curses emulation brain damage, part 1: If we just do what |
| * curses does here, it'll only work properly if the resize made the |
| * window smaller. Do what mutt does: Leave and immediately reenter |
| * Slang screen management mode. */ |
| SLsmg_reset_smg(); |
| SLsmg_init_smg(); |
| #else |
| /* Do the equivalent of what Minimum Profit does: Leave and |
| * immediately reenter curses mode. */ |
| endwin(); |
| refresh(); |
| #endif |
| |
| /* Restore the terminal to its previous state. */ |
| terminal_init(); |
| |
| /* Turn the cursor back on for sure. */ |
| curs_set(1); |
| |
| /* Do the equivalent of what both mutt and Minimum Profit do: |
| * Reinitialize all the windows based on the new screen |
| * dimensions. */ |
| window_init(); |
| |
| /* Redraw the contents of the windows that need it. */ |
| blank_statusbar(); |
| currshortcut = main_list; |
| total_refresh(); |
| |
| /* Reset all the input routines that rely on character sequences. */ |
| reset_kbinput(); |
| |
| /* Jump back to the main loop. */ |
| siglongjmp(jmpbuf, 1); |
| } |
| |
| void allow_pending_sigwinch(bool allow) |
| { |
| sigset_t winch; |
| sigemptyset(&winch); |
| sigaddset(&winch, SIGWINCH); |
| if (allow) |
| sigprocmask(SIG_UNBLOCK, &winch, NULL); |
| else |
| sigprocmask(SIG_BLOCK, &winch, NULL); |
| } |
| #endif /* !NANO_SMALL */ |
| |
| #ifndef NANO_SMALL |
| void do_toggle(const toggle *which) |
| { |
| bool enabled; |
| |
| TOGGLE(which->flag); |
| |
| switch (which->val) { |
| #ifndef DISABLE_MOUSE |
| case TOGGLE_MOUSE_KEY: |
| mouse_init(); |
| break; |
| #endif |
| case TOGGLE_MORESPACE_KEY: |
| case TOGGLE_NOHELP_KEY: |
| window_init(); |
| total_refresh(); |
| break; |
| case TOGGLE_SUSPEND_KEY: |
| signal_init(); |
| break; |
| #ifdef ENABLE_NANORC |
| case TOGGLE_WHITESPACE_KEY: |
| titlebar(NULL); |
| edit_refresh(); |
| break; |
| #endif |
| #ifdef ENABLE_COLOR |
| case TOGGLE_SYNTAX_KEY: |
| edit_refresh(); |
| break; |
| #endif |
| } |
| |
| /* We are assuming here that shortcut_init() above didn't free and |
| * reallocate the toggles. */ |
| enabled = ISSET(which->flag); |
| if (which->val == TOGGLE_NOHELP_KEY || which->val == TOGGLE_WRAP_KEY) |
| enabled = !enabled; |
| statusbar("%s %s", which->desc, |
| enabled ? _("enabled") : _("disabled")); |
| } |
| #endif /* !NANO_SMALL */ |
| |
| void disable_extended_input(void) |
| { |
| struct termios term; |
| |
| tcgetattr(0, &term); |
| term.c_lflag &= ~IEXTEN; |
| tcsetattr(0, TCSANOW, &term); |
| } |
| |
| void disable_signals(void) |
| { |
| struct termios term; |
| |
| tcgetattr(0, &term); |
| term.c_lflag &= ~ISIG; |
| tcsetattr(0, TCSANOW, &term); |
| } |
| |
| #ifndef NANO_SMALL |
| void enable_signals(void) |
| { |
| struct termios term; |
| |
| tcgetattr(0, &term); |
| term.c_lflag |= ISIG; |
| tcsetattr(0, TCSANOW, &term); |
| } |
| #endif |
| |
| void disable_flow_control(void) |
| { |
| struct termios term; |
| |
| tcgetattr(0, &term); |
| term.c_iflag &= ~(IXON|IXOFF); |
| tcsetattr(0, TCSANOW, &term); |
| } |
| |
| void enable_flow_control(void) |
| { |
| struct termios term; |
| |
| tcgetattr(0, &term); |
| term.c_iflag |= (IXON|IXOFF); |
| tcsetattr(0, TCSANOW, &term); |
| } |
| |
| /* Set up the terminal state. Put the terminal in cbreak mode (read one |
| * character at a time and interpret the special control keys), disable |
| * translation of carriage return (^M) into newline (^J) so that we can |
| * tell the difference between the Enter key and Ctrl-J, and disable |
| * echoing of characters as they're typed. Finally, disable extended |
| * input processing, disable interpretation of the special control keys, |
| * and if we're not in preserve mode, disable interpretation of the flow |
| * control characters too. */ |
| void terminal_init(void) |
| { |
| cbreak(); |
| nonl(); |
| noecho(); |
| disable_extended_input(); |
| disable_signals(); |
| if (!ISSET(PRESERVE)) |
| disable_flow_control(); |
| } |
| |
| int do_input(bool *meta_key, bool *func_key, bool *s_or_t, bool |
| *ran_func, bool *finished, bool allow_funcs) |
| { |
| int input; |
| /* The character we read in. */ |
| static int *kbinput = NULL; |
| /* The input buffer. */ |
| static size_t kbinput_len = 0; |
| /* The length of the input buffer. */ |
| const shortcut *s; |
| bool have_shortcut; |
| #ifndef NANO_SMALL |
| const toggle *t; |
| bool have_toggle; |
| #endif |
| |
| *s_or_t = FALSE; |
| *ran_func = FALSE; |
| *finished = FALSE; |
| |
| /* Read in a character. */ |
| input = get_kbinput(edit, meta_key, func_key); |
| |
| #ifndef DISABLE_MOUSE |
| /* If we got a mouse click and it was on a shortcut, read in the |
| * shortcut character. */ |
| if (allow_funcs && *func_key == TRUE && input == KEY_MOUSE) { |
| if (do_mouse()) |
| input = get_kbinput(edit, meta_key, func_key); |
| else |
| input = ERR; |
| } |
| #endif |
| |
| /* Check for a shortcut in the main list. */ |
| s = get_shortcut(main_list, &input, meta_key, func_key); |
| |
| /* If we got a shortcut from the main list, or a "universal" |
| * edit window shortcut, set have_shortcut to TRUE. */ |
| have_shortcut = (s != NULL || input == NANO_XON_KEY || |
| input == NANO_XOFF_KEY || input == NANO_SUSPEND_KEY); |
| |
| #ifndef NANO_SMALL |
| /* Check for a toggle in the main list. */ |
| t = get_toggle(input, *meta_key); |
| |
| /* If we got a toggle from the main list, set have_toggle to |
| * TRUE. */ |
| have_toggle = (t != NULL); |
| #endif |
| |
| /* Set s_or_t to TRUE if we got a shortcut or toggle. */ |
| *s_or_t = (have_shortcut |
| #ifndef NANO_SMALL |
| || have_toggle |
| #endif |
| ); |
| |
| if (allow_funcs) { |
| /* If we got a character, and it isn't a shortcut or toggle, |
| * it's a normal text character. Display the warning if we're |
| * in view mode, or add the character to the input buffer if |
| * we're not. */ |
| if (input != ERR && *s_or_t == FALSE) { |
| if (ISSET(VIEW_MODE)) |
| print_view_warning(); |
| else { |
| kbinput_len++; |
| kbinput = (int *)nrealloc(kbinput, kbinput_len * |
| sizeof(int)); |
| kbinput[kbinput_len - 1] = input; |
| } |
| } |
| |
| /* If we got a shortcut or toggle, or if there aren't any other |
| * characters waiting after the one we read in, we need to |
| * display all the characters in the input buffer if it isn't |
| * empty. Note that it should be empty if we're in view |
| * mode. */ |
| if (*s_or_t == TRUE || get_buffer_len() == 0) { |
| if (kbinput != NULL) { |
| /* Display all the characters in the input buffer at |
| * once, filtering out control characters. */ |
| char *output = charalloc(kbinput_len + 1); |
| size_t i; |
| |
| for (i = 0; i < kbinput_len; i++) |
| output[i] = (char)kbinput[i]; |
| output[i] = '\0'; |
| |
| do_output(output, kbinput_len, FALSE); |
| |
| free(output); |
| |
| /* Empty the input buffer. */ |
| kbinput_len = 0; |
| free(kbinput); |
| kbinput = NULL; |
| } |
| } |
| |
| if (have_shortcut) { |
| switch (input) { |
| /* Handle the "universal" statusbar prompt shortcuts. */ |
| case NANO_XON_KEY: |
| statusbar(_("XON ignored, mumble mumble.")); |
| break; |
| case NANO_XOFF_KEY: |
| statusbar(_("XOFF ignored, mumble mumble.")); |
| break; |
| #ifndef NANO_SMALL |
| case NANO_SUSPEND_KEY: |
| if (ISSET(SUSPEND)) |
| do_suspend(0); |
| break; |
| #endif |
| /* Handle the normal edit window shortcuts, setting |
| * ran_func to TRUE if we try to run their associated |
| * functions and setting finished to TRUE to indicate |
| * that we're done after trying to run their associated |
| * functions. */ |
| default: |
| /* Blow away the text in the cutbuffer if we aren't |
| * cutting text. */ |
| if (s->func != do_cut_text) |
| cutbuffer_reset(); |
| |
| if (s->func != NULL) { |
| *ran_func = TRUE; |
| if (ISSET(VIEW_MODE) && !s->viewok) |
| print_view_warning(); |
| else |
| s->func(); |
| } |
| *finished = TRUE; |
| break; |
| } |
| } |
| #ifndef NANO_SMALL |
| else if (have_toggle) { |
| /* Blow away the text in the cutbuffer, since we aren't |
| * cutting text. */ |
| cutbuffer_reset(); |
| /* Toggle the flag associated with this shortcut. */ |
| if (allow_funcs) |
| do_toggle(t); |
| } |
| #endif |
| else |
| /* Blow away the text in the cutbuffer, since we aren't |
| * cutting text. */ |
| cutbuffer_reset(); |
| } |
| |
| return input; |
| } |
| |
| #ifndef DISABLE_MOUSE |
| bool do_mouse(void) |
| { |
| int mouse_x, mouse_y; |
| bool retval; |
| |
| retval = get_mouseinput(&mouse_x, &mouse_y, TRUE); |
| |
| if (!retval) { |
| /* We can click in the edit window to move the cursor. */ |
| if (wenclose(edit, mouse_y, mouse_x)) { |
| bool sameline; |
| /* Did they click on the line with the cursor? If they |
| * clicked on the cursor, we set the mark. */ |
| size_t xcur; |
| /* The character they clicked on. */ |
| |
| /* Subtract out the size of topwin. Perhaps we need a |
| * constant somewhere? */ |
| mouse_y -= (2 - no_more_space()); |
| |
| sameline = (mouse_y == current_y); |
| |
| /* Move to where the click occurred. */ |
| for (; current_y < mouse_y && current->next != NULL; current_y++) |
| current = current->next; |
| for (; current_y > mouse_y && current->prev != NULL; current_y--) |
| current = current->prev; |
| |
| xcur = actual_x(current->data, get_page_start(xplustabs()) + |
| mouse_x); |
| |
| #ifndef NANO_SMALL |
| /* Clicking where the cursor is toggles the mark, as does |
| * clicking beyond the line length with the cursor at the |
| * end of the line. */ |
| if (sameline && xcur == current_x) { |
| if (ISSET(VIEW_MODE)) { |
| print_view_warning(); |
| return retval; |
| } |
| do_mark(); |
| } |
| #endif |
| |
| current_x = xcur; |
| placewewant = xplustabs(); |
| edit_refresh(); |
| } |
| } |
| |
| return retval; |
| } |
| #endif /* !DISABLE_MOUSE */ |
| |
| /* The user typed kbinput_len multibyte characters. Add them to the |
| * edit buffer, filtering out all control characters if allow_cntrls is |
| * TRUE. */ |
| void do_output(char *output, size_t output_len, bool allow_cntrls) |
| { |
| size_t current_len = strlen(current->data), i = 0; |
| bool old_constupdate = ISSET(CONSTUPDATE); |
| bool do_refresh = FALSE; |
| /* Do we have to call edit_refresh(), or can we get away with |
| * update_line()? */ |
| |
| char *char_buf = charalloc(mb_cur_max()); |
| int char_buf_len; |
| |
| assert(current != NULL && current->data != NULL); |
| |
| /* Turn off constant cursor position display. */ |
| UNSET(CONSTUPDATE); |
| |
| while (i < output_len) { |
| /* If allow_cntrls is FALSE, filter out nulls and newlines, |
| * since they're control characters. */ |
| if (allow_cntrls) { |
| /* Null to newline, if needed. */ |
| if (output[i] == '\0') |
| output[i] = '\n'; |
| /* Newline to Enter, if needed. */ |
| else if (output[i] == '\n') { |
| do_enter(); |
| i++; |
| continue; |
| } |
| } |
| |
| /* Interpret the next multibyte character. If it's an invalid |
| * multibyte character, interpret it as though it's a byte |
| * character. */ |
| char_buf_len = parse_mbchar(output + i, char_buf, NULL, NULL); |
| |
| i += char_buf_len; |
| |
| /* If allow_cntrls is FALSE, filter out a control character. */ |
| if (!allow_cntrls && is_cntrl_mbchar(output + i - char_buf_len)) |
| continue; |
| |
| /* When a character is inserted on the current magicline, it |
| * means we need a new one! */ |
| if (filebot == current) |
| new_magicline(); |
| |
| /* More dangerousness fun =) */ |
| current->data = charealloc(current->data, current_len + |
| (char_buf_len * 2)); |
| |
| assert(current_x <= current_len); |
| |
| charmove(¤t->data[current_x + char_buf_len], |
| ¤t->data[current_x], |
| current_len - current_x + char_buf_len); |
| charcpy(¤t->data[current_x], char_buf, char_buf_len); |
| current_len += char_buf_len; |
| totsize++; |
| set_modified(); |
| |
| #ifndef NANO_SMALL |
| /* Note that current_x has not yet been incremented. */ |
| if (current == mark_beginbuf && current_x < mark_beginx) |
| mark_beginx += char_buf_len; |
| #endif |
| |
| do_right(FALSE); |
| |
| #ifndef DISABLE_WRAPPING |
| /* If we're wrapping text, we need to call edit_refresh(). */ |
| if (!ISSET(NO_WRAP)) { |
| bool do_refresh_save = do_refresh; |
| |
| do_refresh = do_wrap(current); |
| |
| /* If we needed to call edit_refresh() before this, we'll |
| * still need to after this. */ |
| if (do_refresh_save) |
| do_refresh = TRUE; |
| } |
| #endif |
| |
| #ifdef ENABLE_COLOR |
| /* If color syntaxes are turned on, we need to call |
| * edit_refresh(). */ |
| if (!ISSET(NO_COLOR_SYNTAX)) |
| do_refresh = TRUE; |
| #endif |
| } |
| |
| /* Turn constant cursor position display back on if it was on |
| * before. */ |
| if (old_constupdate) |
| SET(CONSTUPDATE); |
| |
| free(char_buf); |
| |
| if (do_refresh) |
| edit_refresh(); |
| else |
| update_line(current, current_x); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| int optchr; |
| int startline = 0; |
| /* Line to try and start at. */ |
| #ifndef DISABLE_WRAPJUSTIFY |
| bool fill_flag_used = FALSE; |
| /* Was the fill option used? */ |
| #endif |
| #ifdef ENABLE_MULTIBUFFER |
| bool old_multibuffer; |
| /* The old value of the multibuffer option, restored after we |
| * load all files on the command line. */ |
| #endif |
| #ifdef HAVE_GETOPT_LONG |
| const struct option long_options[] = { |
| {"help", 0, NULL, 'h'}, |
| #ifdef ENABLE_MULTIBUFFER |
| {"multibuffer", 0, NULL, 'F'}, |
| #endif |
| #ifdef ENABLE_NANORC |
| #ifndef NANO_SMALL |
| {"historylog", 0, NULL, 'H'}, |
| #endif |
| {"ignorercfiles", 0, NULL, 'I'}, |
| #endif |
| {"morespace", 0, NULL, 'O'}, |
| #ifndef DISABLE_JUSTIFY |
| {"quotestr", 1, NULL, 'Q'}, |
| #endif |
| #ifdef HAVE_REGEX_H |
| {"regexp", 0, NULL, 'R'}, |
| #endif |
| {"tabsize", 1, NULL, 'T'}, |
| {"version", 0, NULL, 'V'}, |
| #ifdef ENABLE_COLOR |
| {"syntax", 1, NULL, 'Y'}, |
| #endif |
| {"const", 0, NULL, 'c'}, |
| {"rebinddelete", 0, NULL, 'd'}, |
| {"nofollow", 0, NULL, 'l'}, |
| #ifndef DISABLE_MOUSE |
| {"mouse", 0, NULL, 'm'}, |
| #endif |
| #ifndef DISABLE_OPERATINGDIR |
| {"operatingdir", 1, NULL, 'o'}, |
| #endif |
| {"preserve", 0, NULL, 'p'}, |
| #ifndef DISABLE_WRAPJUSTIFY |
| {"fill", 1, NULL, 'r'}, |
| #endif |
| #ifndef DISABLE_SPELLER |
| {"speller", 1, NULL, 's'}, |
| #endif |
| {"tempfile", 0, NULL, 't'}, |
| {"view", 0, NULL, 'v'}, |
| #ifndef DISABLE_WRAPPING |
| {"nowrap", 0, NULL, 'w'}, |
| #endif |
| {"nohelp", 0, NULL, 'x'}, |
| {"suspend", 0, NULL, 'z'}, |
| #ifndef NANO_SMALL |
| {"smarthome", 0, NULL, 'A'}, |
| {"backup", 0, NULL, 'B'}, |
| {"backupdir", 1, NULL, 'E'}, |
| {"noconvert", 0, NULL, 'N'}, |
| {"smooth", 0, NULL, 'S'}, |
| {"restricted", 0, NULL, 'Z'}, |
| {"autoindent", 0, NULL, 'i'}, |
| {"cut", 0, NULL, 'k'}, |
| #endif |
| {NULL, 0, NULL, 0} |
| }; |
| #endif |
| |
| #ifdef NANO_WIDE |
| { |
| /* If the locale set doesn't exist, or it exists but doesn't |
| * include the case-insensitive string "UTF8" or "UTF-8", we |
| * shouldn't go into UTF-8 mode. */ |
| char *locale = setlocale(LC_ALL, ""); |
| |
| if (locale == NULL || (locale != NULL && |
| strcasestr(locale, "UTF8") == NULL && |
| strcasestr(locale, "UTF-8") == NULL)) |
| SET(NO_UTF8); |
| |
| #ifdef USE_SLANG |
| if (!ISSET(NO_UTF8)) |
| SLutf8_enable(TRUE); |
| #endif |
| } |
| #else |
| setlocale(LC_ALL, ""); |
| #endif |
| |
| #ifdef ENABLE_NLS |
| bindtextdomain(PACKAGE, LOCALEDIR); |
| textdomain(PACKAGE); |
| #endif |
| |
| #if !defined(ENABLE_NANORC) && defined(DISABLE_ROOTWRAP) && !defined(DISABLE_WRAPPING) |
| /* If we don't have rcfile support, we're root, and |
| * --disable-wrapping-as-root is used, turn wrapping off. */ |
| if (geteuid() == NANO_ROOT_UID) |
| SET(NO_WRAP); |
| #endif |
| |
| while ((optchr = |
| #ifdef HAVE_GETOPT_LONG |
| getopt_long(argc, argv, "h?ABE:FHINOQ:RST:VY:Zabcdefgijklmo:pr:s:tvwxz", long_options, NULL) |
| #else |
| getopt(argc, argv, "h?ABE:FHINOQ:RST:VY:Zabcdefgijklmo:pr:s:tvwxz") |
| #endif |
| ) != -1) { |
| |
| switch (optchr) { |
| case 'a': |
| case 'b': |
| case 'e': |
| case 'f': |
| case 'g': |
| case 'j': |
| /* Pico compatibility flags. */ |
| break; |
| #ifndef NANO_SMALL |
| case 'A': |
| SET(SMART_HOME); |
| break; |
| case 'B': |
| SET(BACKUP_FILE); |
| break; |
| case 'E': |
| backup_dir = mallocstrcpy(backup_dir, optarg); |
| break; |
| #endif |
| #ifdef ENABLE_MULTIBUFFER |
| case 'F': |
| SET(MULTIBUFFER); |
| break; |
| #endif |
| #ifdef ENABLE_NANORC |
| #ifndef NANO_SMALL |
| case 'H': |
| SET(HISTORYLOG); |
| break; |
| #endif |
| case 'I': |
| SET(NO_RCFILE); |
| break; |
| #endif |
| #ifndef NANO_SMALL |
| case 'N': |
| SET(NO_CONVERT); |
| break; |
| #endif |
| case 'O': |
| SET(MORE_SPACE); |
| break; |
| #ifndef DISABLE_JUSTIFY |
| case 'Q': |
| quotestr = mallocstrcpy(quotestr, optarg); |
| break; |
| #endif |
| #ifdef HAVE_REGEX_H |
| case 'R': |
| SET(USE_REGEXP); |
| break; |
| #endif |
| #ifndef NANO_SMALL |
| case 'S': |
| SET(SMOOTHSCROLL); |
| break; |
| #endif |
| case 'T': |
| if (!parse_num(optarg, &tabsize) || tabsize <= 0) { |
| fprintf(stderr, _("Requested tab size %s invalid"), optarg); |
| fprintf(stderr, "\n"); |
| exit(1); |
| } |
| break; |
| case 'V': |
| version(); |
| exit(0); |
| #ifdef ENABLE_COLOR |
| case 'Y': |
| syntaxstr = mallocstrcpy(syntaxstr, optarg); |
| break; |
| #endif |
| case 'Z': |
| SET(RESTRICTED); |
| break; |
| case 'c': |
| SET(CONSTUPDATE); |
| break; |
| case 'd': |
| SET(REBIND_DELETE); |
| break; |
| #ifndef NANO_SMALL |
| case 'i': |
| SET(AUTOINDENT); |
| break; |
| case 'k': |
| SET(CUT_TO_END); |
| break; |
| #endif |
| case 'l': |
| SET(NOFOLLOW_SYMLINKS); |
| break; |
| #ifndef DISABLE_MOUSE |
| case 'm': |
| SET(USE_MOUSE); |
| break; |
| #endif |
| #ifndef DISABLE_OPERATINGDIR |
| case 'o': |
| operating_dir = mallocstrcpy(operating_dir, optarg); |
| break; |
| #endif |
| case 'p': |
| SET(PRESERVE); |
| break; |
| #ifndef DISABLE_WRAPJUSTIFY |
| case 'r': |
| if (!parse_num(optarg, &wrap_at)) { |
| fprintf(stderr, _("Requested fill size %s invalid"), optarg); |
| fprintf(stderr, "\n"); |
| exit(1); |
| } |
| fill_flag_used = TRUE; |
| break; |
| #endif |
| #ifndef DISABLE_SPELLER |
| case 's': |
| alt_speller = mallocstrcpy(alt_speller, optarg); |
| break; |
| #endif |
| case 't': |
| SET(TEMP_FILE); |
| break; |
| case 'v': |
| SET(VIEW_MODE); |
| break; |
| #ifndef DISABLE_WRAPPING |
| case 'w': |
| SET(NO_WRAP); |
| break; |
| #endif |
| case 'x': |
| SET(NO_HELP); |
| break; |
| case 'z': |
| SET(SUSPEND); |
| break; |
| default: |
| usage(); |
| } |
| } |
| |
| /* If the executable filename starts with 'r', we use restricted |
| * mode. */ |
| if (*(tail(argv[0])) == 'r') |
| SET(RESTRICTED); |
| |
| /* If we're using restricted mode, disable suspending, backups, and |
| * reading rcfiles, since they all would allow reading from or |
| * writing to files not specified on the command line. */ |
| if (ISSET(RESTRICTED)) { |
| UNSET(SUSPEND); |
| UNSET(BACKUP_FILE); |
| SET(NO_RCFILE); |
| } |
| |
| /* We've read through the command line options. Now back up the flags |
| * and values that are set, and read the rcfile(s). If the values |
| * haven't changed afterward, restore the backed-up values. */ |
| #ifdef ENABLE_NANORC |
| if (!ISSET(NO_RCFILE)) { |
| #ifndef DISABLE_OPERATINGDIR |
| char *operating_dir_cpy = operating_dir; |
| #endif |
| #ifndef DISABLE_WRAPJUSTIFY |
| ssize_t wrap_at_cpy = wrap_at; |
| #endif |
| #ifndef NANO_SMALL |
| char *backup_dir_cpy = backup_dir; |
| #endif |
| #ifndef DISABLE_JUSTIFY |
| char *quotestr_cpy = quotestr; |
| #endif |
| #ifndef DISABLE_SPELLER |
| char *alt_speller_cpy = alt_speller; |
| #endif |
| ssize_t tabsize_cpy = tabsize; |
| unsigned long flags_cpy = flags; |
| |
| #ifndef DISABLE_OPERATINGDIR |
| operating_dir = NULL; |
| #endif |
| #ifndef NANO_SMALL |
| backup_dir = NULL; |
| #endif |
| #ifndef DISABLE_JUSTIFY |
| quotestr = NULL; |
| #endif |
| #ifndef DISABLE_SPELLER |
| alt_speller = NULL; |
| #endif |
| |
| do_rcfile(); |
| |
| #ifndef DISABLE_OPERATINGDIR |
| if (operating_dir_cpy != NULL) { |
| free(operating_dir); |
| operating_dir = operating_dir_cpy; |
| } |
| #endif |
| #ifndef DISABLE_WRAPJUSTIFY |
| if (fill_flag_used) |
| wrap_at = wrap_at_cpy; |
| #endif |
| #ifndef NANO_SMALL |
| if (backup_dir_cpy != NULL) { |
| free(backup_dir); |
| backup_dir = backup_dir_cpy; |
| } |
| #endif |
| #ifndef DISABLE_JUSTIFY |
| if (quotestr_cpy != NULL) { |
| free(quotestr); |
| quotestr = quotestr_cpy; |
| } |
| #endif |
| #ifndef DISABLE_SPELLER |
| if (alt_speller_cpy != NULL) { |
| free(alt_speller); |
| alt_speller = alt_speller_cpy; |
| } |
| #endif |
| if (tabsize_cpy != -1) |
| tabsize = tabsize_cpy; |
| flags |= flags_cpy; |
| } |
| #if defined(DISABLE_ROOTWRAP) && !defined(DISABLE_WRAPPING) |
| else if (geteuid() == NANO_ROOT_UID) |
| SET(NO_WRAP); |
| #endif |
| #endif /* ENABLE_NANORC */ |
| |
| #ifndef NANO_SMALL |
| history_init(); |
| #ifdef ENABLE_NANORC |
| if (!ISSET(NO_RCFILE) && ISSET(HISTORYLOG)) |
| load_history(); |
| #endif |
| #endif |
| |
| #ifndef NANO_SMALL |
| /* Set up the backup directory (unless we're using restricted mode, |
| * in which case backups are disabled, since they would allow |
| * reading from or writing to files not specified on the command |
| * line). This entails making sure it exists and is a directory, so |
| * that backup files will be saved there. */ |
| if (!ISSET(RESTRICTED)) |
| init_backup_dir(); |
| #endif |
| |
| #ifndef DISABLE_OPERATINGDIR |
| /* Set up the operating directory. This entails chdir()ing there, |
| * so that file reads and writes will be based there. */ |
| init_operating_dir(); |
| #endif |
| |
| #ifndef DISABLE_JUSTIFY |
| if (punct == NULL) |
| punct = mallocstrcpy(punct, ".?!"); |
| |
| if (brackets == NULL) |
| brackets = mallocstrcpy(brackets, "'\")}]>"); |
| |
| if (quotestr == NULL) |
| quotestr = mallocstrcpy(NULL, |
| #ifdef HAVE_REGEX_H |
| "^([ \t]*[|>:}#])+" |
| #else |
| "> " |
| #endif |
| ); |
| #ifdef HAVE_REGEX_H |
| quoterc = regcomp("ereg, quotestr, REG_EXTENDED); |
| |
| if (quoterc == 0) { |
| /* We no longer need quotestr, just quotereg. */ |
| free(quotestr); |
| quotestr = NULL; |
| } else { |
| size_t size = regerror(quoterc, "ereg, NULL, 0); |
| |
| quoteerr = charalloc(size); |
| regerror(quoterc, "ereg, quoteerr, size); |
| } |
| #else |
| quotelen = strlen(quotestr); |
| #endif /* !HAVE_REGEX_H */ |
| #endif /* !DISABLE_JUSTIFY */ |
| |
| #ifndef DISABLE_SPELLER |
| /* If we don't have an alternative spell checker after reading the |
| * command line and/or rcfile(s), check $SPELL for one, as Pico |
| * does (unless we're using restricted mode, in which case spell |
| * checking is disabled, since it would allow reading from or |
| * writing to files not specified on the command line). */ |
| if (!ISSET(RESTRICTED) && alt_speller == NULL) { |
| char *spellenv = getenv("SPELL"); |
| if (spellenv != NULL) |
| alt_speller = mallocstrcpy(NULL, spellenv); |
| } |
| #endif |
| |
| #if !defined(NANO_SMALL) && defined(ENABLE_NANORC) |
| /* If whitespace wasn't specified, set its default value. */ |
| if (whitespace == NULL) { |
| whitespace = mallocstrcpy(NULL, " "); |
| whitespace_len[0] = 1; |
| whitespace_len[1] = 1; |
| } |
| #endif |
| |
| /* If tabsize wasn't specified, set its default value. */ |
| if (tabsize == -1) |
| tabsize = WIDTH_OF_TAB; |
| |
| /* Back up the old terminal settings so that they can be restored. */ |
| tcgetattr(0, &oldterm); |
| |
| /* Curses initialization stuff: Start curses and set up the |
| * terminal state. */ |
| initscr(); |
| terminal_init(); |
| |
| /* Turn the cursor on for sure. */ |
| curs_set(1); |
| |
| /* Set up the global variables and the shortcuts. */ |
| global_init(FALSE); |
| shortcut_init(FALSE); |
| |
| /* Set up the signal handlers. */ |
| signal_init(); |
| |
| #ifdef DEBUG |
| fprintf(stderr, "Main: set up windows\n"); |
| #endif |
| |
| window_init(); |
| #ifndef DISABLE_MOUSE |
| mouse_init(); |
| #endif |
| |
| #ifdef DEBUG |
| fprintf(stderr, "Main: open file\n"); |
| #endif |
| |
| /* If there's a +LINE flag here, it is the first non-option |
| * argument, and it is followed by at least one other argument, the |
| * filename it applies to. */ |
| if (0 < optind && optind < argc - 1 && argv[optind][0] == '+') { |
| startline = atoi(&argv[optind][1]); |
| optind++; |
| } |
| |
| #ifdef ENABLE_MULTIBUFFER |
| old_multibuffer = ISSET(MULTIBUFFER); |
| SET(MULTIBUFFER); |
| |
| /* Read all the files after the first one on the command line into |
| * new buffers. */ |
| { |
| int i = optind + 1, iline = 0; |
| for (; i < argc; i++) { |
| /* If there's a +LINE flag here, it is followed by at least |
| * one other argument, the filename it applies to. */ |
| if (i < argc - 1 && argv[i][0] == '+' && iline == 0) { |
| iline = atoi(&argv[i][1]); |
| } else { |
| load_buffer(argv[i]); |
| if (iline > 0) { |
| do_gotoline(iline, FALSE); |
| iline = 0; |
| } |
| } |
| } |
| } |
| #endif |
| |
| /* Read the first file on the command line into either the current |
| * buffer or a new buffer, depending on whether multibuffer mode is |
| * enabled. */ |
| if (optind < argc) |
| load_buffer(argv[optind]); |
| |
| /* We didn't open any files if all the command line arguments were |
| * invalid files like directories or if there were no command line |
| * arguments given. In this case, we have to load a blank buffer. |
| * Also, we unset view mode to allow editing. */ |
| if (filename == NULL) { |
| filename = mallocstrcpy(NULL, ""); |
| new_file(); |
| UNSET(VIEW_MODE); |
| |
| /* Add this new entry to the open_files structure if we have |
| * multibuffer support, or to the main filestruct if we don't. */ |
| load_file(); |
| } |
| |
| #ifdef ENABLE_MULTIBUFFER |
| if (!old_multibuffer) |
| UNSET(MULTIBUFFER); |
| #endif |
| |
| #ifdef DEBUG |
| fprintf(stderr, "Main: top and bottom win\n"); |
| #endif |
| |
| titlebar(NULL); |
| display_main_list(); |
| |
| if (startline > 0) |
| do_gotoline(startline, FALSE); |
| |
| #ifndef NANO_SMALL |
| /* Return here after a SIGWINCH. */ |
| sigsetjmp(jmpbuf, 1); |
| #endif |
| |
| edit_refresh(); |
| |
| while (TRUE) { |
| bool meta_key, func_key, s_or_t, ran_func, finished; |
| |
| /* Make sure the cursor is in the edit window. */ |
| reset_cursor(); |
| |
| /* If constant cursor position display is on, display the cursor |
| * position. */ |
| if (ISSET(CONSTUPDATE)) |
| do_cursorpos(TRUE); |
| |
| currshortcut = main_list; |
| |
| /* Read in and interpret characters. */ |
| do_input(&meta_key, &func_key, &s_or_t, &ran_func, &finished, |
| TRUE); |
| } |
| |
| assert(FALSE); |
| } |