| /* $Id$ */ |
| /************************************************************************** |
| * nano.c * |
| * * |
| * Copyright (C) 1999-2003 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. * |
| * * |
| **************************************************************************/ |
| |
| #include "config.h" |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <stdarg.h> |
| #include <signal.h> |
| #include <setjmp.h> |
| #include <unistd.h> |
| #include <string.h> |
| #include <fcntl.h> |
| #include <sys/stat.h> |
| #include <sys/ioctl.h> |
| #include <sys/param.h> |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| #include <errno.h> |
| #include <ctype.h> |
| #include <locale.h> |
| #include <limits.h> |
| #include <assert.h> |
| #include "proto.h" |
| #include "nano.h" |
| |
| #ifdef HAVE_TERMIOS_H |
| #include <termios.h> |
| #endif |
| |
| #ifdef HAVE_TERMIO_H |
| #include <termio.h> |
| #endif |
| |
| #ifdef HAVE_GETOPT_H |
| #include <getopt.h> |
| #endif |
| |
| #ifndef DISABLE_WRAPJUSTIFY |
| static int fill = 0; /* Fill - where to wrap lines, basically */ |
| #endif |
| |
| static struct termios oldterm; /* The user's original term settings */ |
| static struct sigaction act; /* For all our fun signal handlers */ |
| |
| static sigjmp_buf jmpbuf; /* Used to return to mainloop after SIGWINCH */ |
| |
| /* What we do when we're all set to exit */ |
| RETSIGTYPE finish(int sigage) |
| { |
| |
| #ifndef NANO_SMALL |
| #ifdef ENABLE_NANORC |
| /* do here so errors about ./nano_history |
| don't confuse user */ |
| if (!ISSET(NO_RCFILE) && ISSET(HISTORYLOG)) |
| save_history(); |
| #endif |
| free_history(&search_history); |
| free_history(&replace_history); |
| #endif |
| |
| keypad(edit, TRUE); |
| keypad(bottomwin, TRUE); |
| |
| if (!ISSET(NO_HELP)) { |
| mvwaddstr(bottomwin, 1, 0, hblank); |
| mvwaddstr(bottomwin, 2, 0, hblank); |
| } else |
| mvwaddstr(bottomwin, 0, 0, hblank); |
| |
| wrefresh(bottomwin); |
| endwin(); |
| |
| /* Restore the old term settings */ |
| tcsetattr(0, TCSANOW, &oldterm); |
| |
| #ifdef DEBUG |
| thanks_for_all_the_fish(); |
| #endif |
| |
| exit(sigage); |
| } |
| |
| /* Die (gracefully?) */ |
| void die(const char *msg, ...) |
| { |
| va_list ap; |
| |
| endwin(); |
| curses_ended = TRUE; |
| |
| /* Restore the old term settings */ |
| tcsetattr(0, TCSANOW, &oldterm); |
| |
| va_start(ap, msg); |
| vfprintf(stderr, msg, ap); |
| va_end(ap); |
| |
| /* save the currently loaded file if it's been modified */ |
| if (ISSET(MODIFIED)) |
| die_save_file(filename); |
| |
| #ifdef ENABLE_MULTIBUFFER |
| /* then save all of the other modified loaded files, if any */ |
| if (open_files != NULL) { |
| openfilestruct *tmp; |
| |
| tmp = open_files; |
| |
| while (open_files->prev != NULL) |
| open_files = open_files->prev; |
| |
| while (open_files->next != NULL) { |
| |
| /* if we already saved the file above (i. e. if it was the |
| currently loaded file), don't save it again */ |
| if (tmp != open_files) { |
| /* make sure open_files->fileage and fileage, and |
| open_files->filebot and filebot, are in sync; they |
| might not be if lines have been cut from the top or |
| bottom of the file */ |
| fileage = open_files->fileage; |
| filebot = open_files->filebot; |
| /* save the file if it's been modified */ |
| if (open_files->file_flags & MODIFIED) |
| die_save_file(open_files->filename); |
| } |
| open_files = open_files->next; |
| } |
| } |
| #endif |
| |
| exit(1); /* We have a problem: exit w/ errorlevel(1) */ |
| } |
| |
| void die_save_file(const char *die_filename) |
| { |
| char *ret; |
| int i = -1; |
| |
| /* If we can't save, we have REAL bad problems, but we might as well |
| TRY. */ |
| if (die_filename[0] == '\0') |
| ret = get_next_filename("nano.save"); |
| else { |
| char *buf = charalloc(strlen(die_filename) + 6); |
| |
| strcpy(buf, die_filename); |
| strcat(buf, ".save"); |
| ret = get_next_filename(buf); |
| free(buf); |
| } |
| if (ret[0] != '\0') |
| i = write_file(ret, 1, 0, 0); |
| |
| if (i != -1) |
| fprintf(stderr, _("\nBuffer written to %s\n"), ret); |
| else |
| fprintf(stderr, _("\nNo %s written (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 die_too_small(void) |
| { |
| die(_("Window size is too small for nano...\n")); |
| } |
| |
| void print_view_warning(void) |
| { |
| statusbar(_("Key illegal in VIEW mode")); |
| } |
| |
| /* Initialize global variables - no better way for now. If |
| * save_cutbuffer is nonzero, don't set cutbuffer to NULL. */ |
| void global_init(int save_cutbuffer) |
| { |
| current_x = 0; |
| current_y = 0; |
| |
| if ((editwinrows = LINES - 5 + no_help()) < MIN_EDITOR_ROWS) |
| die_too_small(); |
| |
| fileage = NULL; |
| if (!save_cutbuffer) |
| cutbuffer = NULL; |
| current = NULL; |
| edittop = NULL; |
| editbot = NULL; |
| totlines = 0; |
| totsize = 0; |
| placewewant = 0; |
| |
| #ifndef DISABLE_WRAPJUSTIFY |
| fill = wrap_at; |
| if (fill <= 0) |
| fill += COLS; |
| if (fill < MIN_FILL_LENGTH) |
| die_too_small(); |
| #endif |
| |
| hblank = charalloc(COLS + 1); |
| memset(hblank, ' ', COLS); |
| hblank[COLS] = '\0'; |
| } |
| |
| void window_init(void) |
| { |
| if ((editwinrows = LINES - 5 + no_help()) < MIN_EDITOR_ROWS) |
| die_too_small(); |
| |
| if (edit != NULL) |
| delwin(edit); |
| if (topwin != NULL) |
| delwin(topwin); |
| if (bottomwin != NULL) |
| delwin(bottomwin); |
| |
| /* Set up the main text window */ |
| edit = newwin(editwinrows, COLS, 2, 0); |
| |
| /* And the other windows */ |
| topwin = newwin(2, COLS, 0, 0); |
| bottomwin = newwin(3 - no_help(), COLS, LINES - 3 + no_help(), 0); |
| |
| #ifdef PDCURSES |
| /* Oops, I guess we need this again. Moved here so the keypad still |
| works after a Meta-X, for example */ |
| keypad(edit, TRUE); |
| keypad(bottomwin, TRUE); |
| #endif |
| } |
| |
| #if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION) |
| void mouse_init(void) |
| { |
| if (ISSET(USE_MOUSE)) { |
| keypad_on(edit, 1); |
| keypad_on(bottomwin, 1); |
| |
| 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 = 1; /* space needed for help_text */ |
| char *ptr = NULL; |
| #ifndef NANO_SMALL |
| const toggle *t; |
| #endif |
| const shortcut *s; |
| |
| /* First set up the initial help text for the current function */ |
| if (currshortcut == whereis_list || currshortcut == replace_list |
| || currshortcut == replace_list_2) |
| ptr = _("Search Command Help Text\n\n " |
| "Enter the words or characters you would like to search " |
| "for, then hit 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.\n\n The following function " |
| "keys are available in Search mode:\n\n"); |
| else if (currshortcut == goto_list) |
| ptr = _("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"); |
| else if (currshortcut == insertfile_list) |
| ptr = _("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 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).\n\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"); |
| else if (currshortcut == writefile_list) |
| ptr = _("Write File Help Text\n\n " |
| "Type the name that you wish to save the current file " |
| "as and hit Enter to save the file.\n\n If you have " |
| "selected text with Ctrl-^, 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"); |
| #ifndef DISABLE_BROWSER |
| else if (currshortcut == browser_list) |
| ptr = _("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"); |
| else if (currshortcut == gotodir_list) |
| ptr = _("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"); |
| #endif |
| #ifndef DISABLE_SPELLER |
| else if (currshortcut == spell_list) |
| ptr = _("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.\n\n The following other functions are " |
| "available in Spell Check mode:\n\n"); |
| #endif |
| #ifndef NANO_SMALL |
| else if (currshortcut == extcmd_list) |
| ptr = _("External 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 multibuffer mode).\n\n The following keys are " |
| "available in this mode:\n\n"); |
| #endif |
| else /* Default to the main help list */ |
| ptr = _(" 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 " |
| "The notation for shortcuts is as follows: Control-key " |
| "sequences are notated with a caret (^) symbol and are entered " |
| "with the Control (Ctrl) key. 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. The " |
| "following keystrokes are available in the main editor window. " |
| "Alternative keys are shown in parentheses:\n\n"); |
| |
| allocsize += strlen(ptr); |
| |
| /* The space needed for the shortcut lists, at most COLS characters, |
| * plus '\n'. */ |
| allocsize += (COLS + 1) * 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 at most |
| * COLS - 24 characters, plus '\n'.*/ |
| if (currshortcut == main_list) |
| for (t = toggles; t != NULL; t = t->next) |
| allocsize += COLS - 17; |
| #endif /* !NANO_SMALL */ |
| |
| /* 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); |
| |
| /* Now add the text we want */ |
| strcpy(help_text, ptr); |
| ptr = help_text + strlen(help_text); |
| |
| /* Now add our shortcut info */ |
| for (s = currshortcut; s != NULL; s = s->next) { |
| /* true if the character in s->altval is shown in first column */ |
| int meta_shortcut = 0; |
| |
| if (s->val > 0 && s->val < 32) |
| ptr += sprintf(ptr, "^%c", s->val + 64); |
| #ifndef NANO_SMALL |
| else if (s->val == NANO_CONTROL_SPACE) |
| ptr += sprintf(ptr, "^%.6s", _("Space")); |
| else if (s->altval == NANO_ALT_SPACE) { |
| meta_shortcut = 1; |
| ptr += sprintf(ptr, "M-%.5s", _("Space")); |
| } else if (s->val == KEY_UP) |
| ptr += sprintf(ptr, "%.2s", _("Up")); |
| #endif |
| else if (s->altval > 0) { |
| meta_shortcut = 1; |
| ptr += sprintf(ptr, "M-%c", s->altval - |
| (('A' <= s->altval && s->altval <= 'Z') || |
| 'a' <= s->altval ? 32 : 0)); |
| } |
| /* Hack */ |
| else if (s->val >= 'a') { |
| meta_shortcut = 1; |
| ptr += sprintf(ptr, "M-%c", s->val - 32); |
| } |
| |
| *(ptr++) = '\t'; |
| |
| if (s->misc1 > KEY_F0 && s->misc1 <= KEY_F(64)) |
| ptr += sprintf(ptr, "(F%d)", s->misc1 - KEY_F0); |
| |
| *(ptr++) = '\t'; |
| |
| if (!meta_shortcut && s->altval > 0) |
| ptr += sprintf(ptr, "(M-%c)", s->altval - |
| (('A' <= s->altval && s->altval <= 'Z') || 'a' <= s->altval |
| ? 32 : 0)); |
| |
| *(ptr++) = '\t'; |
| |
| assert(s->help != NULL); |
| ptr += sprintf(ptr, "%.*s\n", COLS - 24, s->help); |
| } |
| |
| #ifndef NANO_SMALL |
| /* And the toggles... */ |
| if (currshortcut == main_list) |
| for (t = toggles; t != NULL; t = t->next) { |
| ptr += sprintf(ptr, "M-%c\t\t\t", t->val - 32); |
| assert(t->desc != NULL); |
| ptr += sprintf(ptr, _("%.*s enable/disable\n"), COLS - 24, t->desc); |
| } |
| #endif /* !NANO_SMALL */ |
| |
| /* If all went well, we didn't overwrite the allocated space for |
| help_text. */ |
| assert(strlen(help_text) < allocsize); |
| } |
| #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 node to a pointer (space will be malloc()ed). */ |
| filestruct *copy_node(const filestruct *src) |
| { |
| filestruct *dst = (filestruct *)nmalloc(sizeof(filestruct)); |
| |
| assert(src != NULL); |
| |
| dst->data = charalloc(strlen(src->data) + 1); |
| dst->next = src->next; |
| dst->prev = src->prev; |
| strcpy(dst->data, src->data); |
| dst->lineno = src->lineno; |
| |
| return dst; |
| } |
| |
| /* Splice a node into an existing filestruct. */ |
| void splice_node(filestruct *begin, filestruct *newnode, filestruct *end) |
| { |
| if (newnode != NULL) { |
| newnode->next = end; |
| newnode->prev = begin; |
| } |
| if (begin != NULL) |
| 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) |
| { |
| if (fileptr != 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) |
| { |
| if (src != NULL) { |
| while (src->next != NULL) { |
| src = src->next; |
| delete_node(src->prev); |
| #ifdef DEBUG |
| fprintf(stderr, _("%s: free'd a node, YAY!\n"), "delete_node()"); |
| #endif |
| } |
| delete_node(src); |
| #ifdef DEBUG |
| fprintf(stderr, _("%s: free'd last node.\n"), "delete_node()"); |
| #endif |
| } |
| } |
| |
| 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; |
| } |
| } |
| |
| /* Print one usage string to the screen, removes lots of duplicate |
| * strings to translate and takes out the parts that shouldn't be |
| * translatable (the flag names). */ |
| void print1opt(const char *shortflag, const char *longflag, |
| 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 |
| |
| printf("%s\n", desc); |
| } |
| |
| 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 /* HAVE_GETOPT_LONG */ |
| |
| print1opt("-h, -?", "--help", _("Show this message")); |
| print1opt(_("+LINE"), "", _("Start at line number LINE")); |
| #ifndef NANO_SMALL |
| print1opt("-B", "--backup", _("Backup existing files on save")); |
| print1opt("-D", "--dos", _("Write file in DOS format")); |
| #endif |
| #ifdef ENABLE_MULTIBUFFER |
| print1opt("-F", "--multibuffer", _("Enable multiple file buffers")); |
| #endif |
| #ifdef ENABLE_NANORC |
| print1opt("-H", "--historylog", _("Log & read search/replace string history")); |
| print1opt("-I", "--ignorercfiles", _("Don't look at nanorc files")); |
| #endif |
| print1opt("-K", "--keypad", _("Use alternate keypad routines")); |
| #ifndef NANO_SMALL |
| print1opt("-M", "--mac", _("Write file in Mac format")); |
| print1opt("-N", "--noconvert", _("Don't convert files from DOS/Mac format")); |
| #endif |
| #ifndef DISABLE_JUSTIFY |
| print1opt(_("-Q [str]"), _("--quotestr=[str]"), _("Quoting string, default \"> \"")); |
| #endif |
| #ifdef HAVE_REGEX_H |
| print1opt("-R", "--regexp", _("Do regular expression searches")); |
| #endif |
| #ifndef NANO_SMALL |
| print1opt("-S", "--smooth", _("Smooth scrolling")); |
| #endif |
| print1opt(_("-T [num]"), _("--tabsize=[num]"), _("Set width of a tab to num")); |
| print1opt("-V", "--version", _("Print version information and exit")); |
| #ifdef ENABLE_COLOR |
| print1opt(_("-Y [str]"), _("--syntax [str]"), _("Syntax definition to use")); |
| #endif |
| print1opt("-c", "--const", _("Constantly show cursor position")); |
| #ifndef NANO_SMALL |
| print1opt("-i", "--autoindent", _("Automatically indent new lines")); |
| print1opt("-k", "--cut", _("Let ^K cut from cursor to end of line")); |
| #endif |
| print1opt("-l", "--nofollow", _("Don't follow symbolic links, overwrite")); |
| #if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION) |
| print1opt("-m", "--mouse", _("Enable mouse")); |
| #endif |
| #ifndef DISABLE_OPERATINGDIR |
| print1opt(_("-o [dir]"), _("--operatingdir=[dir]"), _("Set operating directory")); |
| #endif |
| print1opt("-p", "--preserve", _("Preserve XON (^Q) and XOFF (^S) keys")); |
| #ifndef DISABLE_WRAPJUSTIFY |
| print1opt(_("-r [#cols]"), _("--fill=[#cols]"), _("Set fill cols to (wrap lines at) #cols")); |
| #endif |
| #ifndef DISABLE_SPELLER |
| print1opt(_("-s [prog]"), _("--speller=[prog]"), _("Enable alternate speller")); |
| #endif |
| print1opt("-t", "--tempfile", _("Auto save on exit, don't prompt")); |
| print1opt("-v", "--view", _("View (read only) mode")); |
| #ifndef DISABLE_WRAPPING |
| print1opt("-w", "--nowrap", _("Don't wrap long lines")); |
| #endif |
| print1opt("-x", "--nohelp", _("Don't show help window")); |
| print1opt("-z", "--suspend", _("Enable suspend")); |
| |
| /* this is a special case */ |
| printf(" %s\t\t\t%s\n","-a, -b, -e, -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 |
| #if defined(DISABLE_MOUSE) || !defined(NCURSES_MOUSE_VERSION) |
| 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"); |
| } |
| |
| /* Stuff we do when we abort from programs and want to clean up the |
| * screen. This doesn't do much right now. */ |
| void do_early_abort(void) |
| { |
| blank_statusbar_refresh(); |
| } |
| |
| int no_help(void) |
| { |
| return ISSET(NO_HELP) ? 2 : 0; |
| } |
| |
| #if defined(DISABLE_JUSTIFY) || defined(DISABLE_SPELLER) || defined(DISABLE_HELP) || defined(NANO_SMALL) |
| void nano_disabled_msg(void) |
| { |
| statusbar(_("Sorry, support for this function has been disabled")); |
| } |
| #endif |
| |
| void do_preserve_msg(void) |
| { |
| fprintf(stderr, _("\nThe -p flag now invokes the Pico \"preserve\" flag.\n" |
| "The Pico compatibility flag has been removed as nano\n" |
| "now fully Pico compatible. Please see the nano FAQ\n" |
| "for more info on this change...\n\n" |
| "Press return to continue\n")); |
| while (getchar() != '\n'); |
| } |
| |
| #ifndef NANO_SMALL |
| static int pid; /* This is the PID of the newly forked process |
| * below. It must be global since the signal |
| * handler needs it. */ |
| RETSIGTYPE cancel_fork(int signal) |
| { |
| if (kill(pid, SIGKILL) == -1) |
| nperror("kill"); |
| } |
| |
| int open_pipe(const char *command) |
| { |
| int fd[2]; |
| FILE *f; |
| struct sigaction oldaction, newaction; |
| /* original and temporary handlers for SIGINT */ |
| #ifdef _POSIX_VDISABLE |
| struct termios term, newterm; |
| #endif /* _POSIX_VDISABLE */ |
| int cancel_sigs = 0; |
| /* cancel_sigs == 1 means that sigaction() failed without changing |
| * the signal handlers. cancel_sigs == 2 means the signal handler |
| * was changed, but the tcsetattr didn't succeed. |
| * |
| * I 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 1; |
| } |
| |
| /* 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, 0); |
| exit(0); |
| } |
| |
| /* Else continue as parent. */ |
| |
| close(fd[1]); |
| |
| if (pid == -1) { |
| close(fd[0]); |
| statusbar(_("Could not fork")); |
| return 1; |
| } |
| |
| /* Before we start reading the forked command's output, we set |
| * things up so that ^C will cancel the new process. */ |
| if (sigaction(SIGINT, NULL, &newaction) == -1) { |
| cancel_sigs = 1; |
| nperror("sigaction"); |
| } else { |
| newaction.sa_handler = cancel_fork; |
| if (sigaction(SIGINT, &newaction, &oldaction) == -1) { |
| cancel_sigs = 1; |
| nperror("sigaction"); |
| } |
| } |
| /* Note that now oldaction is the previous SIGINT signal handler, |
| * to be restored later. */ |
| |
| /* See if the platform supports disabling individual control |
| * characters. */ |
| #ifdef _POSIX_VDISABLE |
| if (cancel_sigs == 0 && tcgetattr(0, &term) == -1) { |
| cancel_sigs = 2; |
| nperror("tcgetattr"); |
| } |
| if (cancel_sigs == 0) { |
| newterm = term; |
| /* Grab oldterm's VINTR key :-) */ |
| newterm.c_cc[VINTR] = oldterm.c_cc[VINTR]; |
| if (tcsetattr(0, TCSANOW, &newterm) == -1) { |
| cancel_sigs = 2; |
| nperror("tcsetattr"); |
| } |
| } |
| #endif /* _POSIX_VDISABLE */ |
| |
| f = fdopen(fd[0], "rb"); |
| if (f == NULL) |
| nperror("fdopen"); |
| |
| read_file(f, "stdin", 0); |
| /* 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"); |
| |
| #ifdef _POSIX_VDISABLE |
| if (cancel_sigs == 0 && tcsetattr(0, TCSANOW, &term) == -1) |
| nperror("tcsetattr"); |
| #endif /* _POSIX_VDISABLE */ |
| |
| if (cancel_sigs != 1 && sigaction(SIGINT, &oldaction, NULL) == -1) |
| nperror("sigaction"); |
| |
| return 0; |
| } |
| #endif /* NANO_SMALL */ |
| |
| #if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION) |
| void do_mouse(void) |
| { |
| MEVENT mevent; |
| int currslen; |
| const shortcut *s = currshortcut; |
| |
| if (getmouse(&mevent) == ERR) |
| return; |
| |
| /* If mouse not in edit or bottom window, return */ |
| if (wenclose(edit, mevent.y, mevent.x) && currshortcut == main_list) { |
| int 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 size of topwin. Perhaps we need a constant |
| * somewhere? */ |
| mevent.y -= 2; |
| |
| sameline = mevent.y == current_y; |
| |
| /* Move to where the click occurred. */ |
| for(; current_y < mevent.y && current->next != NULL; current_y++) |
| current = current->next; |
| for(; current_y > mevent.y && current->prev != NULL; current_y--) |
| current = current->prev; |
| |
| xcur = actual_x(current, get_page_start(xplustabs()) + mevent.x); |
| |
| /* Selecting where the cursor is toggles the mark. As does |
| selecting 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; |
| } |
| do_mark(); |
| } |
| |
| current_x = xcur; |
| placewewant = xplustabs(); |
| edit_refresh(); |
| } else if (wenclose(bottomwin, mevent.y, mevent.x) && !ISSET(NO_HELP)) { |
| int i, k; |
| |
| if (currshortcut == main_list) |
| currslen = MAIN_VISIBLE; |
| else |
| currslen = length_of_list(currshortcut); |
| |
| if (currslen < 2) |
| k = COLS / 6; |
| else |
| k = COLS / ((currslen + (currslen %2)) / 2); |
| |
| /* Determine what shortcut list was clicked */ |
| mevent.y -= (editwinrows + 3); |
| |
| if (mevent.y < 0) /* They clicked on the statusbar */ |
| return; |
| |
| /* Don't select stuff beyond list length */ |
| if (mevent.x / k >= currslen) |
| return; |
| |
| for (i = 0; i < (mevent.x / k) * 2 + mevent.y; i++) |
| s = s->next; |
| |
| /* And ungetch that value */ |
| ungetch(s->val); |
| |
| /* And if it's an alt-key sequence, we should probably send alt |
| too ;-) */ |
| if (s->val >= 'a' && s->val <= 'z') |
| ungetch(27); |
| } |
| } |
| #endif |
| |
| /* The user typed a printable character; add it to the edit buffer. */ |
| void do_char(char ch) |
| { |
| size_t current_len = strlen(current->data); |
| #if !defined(DISABLE_WRAPPING) || defined(ENABLE_COLOR) |
| int refresh = 0; |
| /* Do we have to run edit_refresh(), or can we get away with |
| * update_line()? */ |
| #endif |
| |
| /* magic-line: when a character is inserted on the current magic line, |
| * it means we need a new one! */ |
| if (filebot == current && current->data[0] == '\0') { |
| new_magicline(); |
| fix_editbot(); |
| } |
| |
| /* more dangerousness fun =) */ |
| current->data = nrealloc(current->data, current_len + 2); |
| assert(current_x <= current_len); |
| memmove(¤t->data[current_x + 1], |
| ¤t->data[current_x], |
| current_len - current_x + 1); |
| current->data[current_x] = ch; |
| 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++; |
| #endif |
| |
| do_right(); |
| |
| #ifndef DISABLE_WRAPPING |
| if (!ISSET(NO_WRAP) && ch != '\t') |
| refresh = do_wrap(current); |
| #endif |
| |
| #ifdef ENABLE_COLOR |
| refresh = 1; |
| #endif |
| |
| #if !defined(DISABLE_WRAPPING) || defined(ENABLE_COLOR) |
| if (refresh) |
| edit_refresh(); |
| #endif |
| |
| UNSET(KEEP_CUTBUFFER); |
| } |
| |
| int do_backspace(void) |
| { |
| int refresh = 0; |
| if (current_x > 0) { |
| assert(current_x <= strlen(current->data)); |
| /* Let's get dangerous */ |
| memmove(¤t->data[current_x - 1], ¤t->data[current_x], |
| strlen(current->data) - current_x + 1); |
| #ifdef DEBUG |
| fprintf(stderr, _("current->data now = \"%s\"\n"), current->data); |
| #endif |
| align(¤t->data); |
| #ifndef NANO_SMALL |
| if (current_x <= mark_beginx && mark_beginbuf == current) |
| mark_beginx--; |
| #endif |
| do_left(); |
| #ifdef ENABLE_COLOR |
| refresh = 1; |
| #endif |
| } else { |
| filestruct *previous; |
| const filestruct *tmp; |
| |
| if (current == fileage) |
| return 0; /* Can't delete past top of file */ |
| |
| previous = current->prev; |
| current_x = strlen(previous->data); |
| placewewant = strlenpt(previous->data); |
| #ifndef NANO_SMALL |
| if (current == mark_beginbuf) { |
| mark_beginx += current_x; |
| mark_beginbuf = previous; |
| } |
| #endif |
| previous->data = nrealloc(previous->data, |
| current_x + strlen(current->data) + 1); |
| strcpy(previous->data + current_x, current->data); |
| |
| unlink_node(current); |
| delete_node(current); |
| tmp = current; |
| current = (previous->next ? previous->next : previous); |
| renumber(current); |
| /* We had to renumber before doing update_line. */ |
| if (tmp == edittop) |
| page_up(); |
| |
| /* Ooops, sanity check */ |
| if (tmp == filebot) { |
| filebot = current; |
| editbot = current; |
| |
| /* Recreate the magic line if we're deleting it AND if the |
| line we're on now is NOT blank. if it is blank we |
| can just use IT for the magic line. This is how Pico |
| appears to do it, in any case. */ |
| if (current->data[0] != '\0') { |
| new_magicline(); |
| fix_editbot(); |
| } |
| } |
| |
| current = previous; |
| if (current_y > 0) |
| current_y--; |
| totlines--; |
| #ifdef DEBUG |
| fprintf(stderr, _("After, data = \"%s\"\n"), current->data); |
| #endif |
| UNSET(KEEP_CUTBUFFER); |
| refresh = 1; |
| } |
| |
| totsize--; |
| set_modified(); |
| if (refresh) |
| edit_refresh(); |
| return 1; |
| } |
| |
| int do_delete(void) |
| { |
| int refresh = 0; |
| |
| /* blbf -> blank line before filebot (see below) */ |
| int blbf = 0; |
| |
| if (current->next == filebot && current->data[0] == '\0') |
| blbf = 1; |
| |
| placewewant = xplustabs(); |
| |
| if (current_x != strlen(current->data)) { |
| /* Let's get dangerous */ |
| memmove(¤t->data[current_x], ¤t->data[current_x + 1], |
| strlen(current->data) - current_x); |
| |
| align(¤t->data); |
| #ifdef ENABLE_COLOR |
| refresh = 1; |
| #endif |
| } else if (current->next != NULL && (current->next != filebot || blbf)) { |
| /* We can delete the line before filebot only if it is blank: it |
| becomes the new magic line then. */ |
| |
| filestruct *foo; |
| |
| current->data = nrealloc(current->data, |
| strlen(current->data) + |
| strlen(current->next->data) + 1); |
| strcat(current->data, current->next->data); |
| |
| foo = current->next; |
| if (filebot == foo) { |
| filebot = current; |
| editbot = current; |
| } |
| |
| unlink_node(foo); |
| delete_node(foo); |
| renumber(current); |
| totlines--; |
| refresh = 1; |
| } else |
| return 0; |
| |
| totsize--; |
| set_modified(); |
| UNSET(KEEP_CUTBUFFER); |
| update_line(current, current_x); |
| if (refresh) |
| edit_refresh(); |
| return 1; |
| } |
| |
| int do_tab(void) |
| { |
| do_char('\t'); |
| return 1; |
| } |
| |
| /* Someone hits return *gasp!* */ |
| int do_enter(void) |
| { |
| filestruct *newnode; |
| char *tmp; |
| |
| newnode = make_new_node(current); |
| assert(current != NULL && current->data != NULL); |
| tmp = ¤t->data[current_x]; |
| |
| #ifndef NANO_SMALL |
| /* Do auto-indenting, like the neolithic Turbo Pascal editor. */ |
| if (ISSET(AUTOINDENT)) { |
| int extra = 0; |
| const char *spc = current->data; |
| |
| while (*spc == ' ' || *spc == '\t') { |
| extra++; |
| spc++; |
| } |
| /* If current_x < extra, then we are breaking the line in the |
| * indentation. Autoindenting should add only current_x |
| * characters of indentation. */ |
| if (current_x < extra) |
| extra = current_x; |
| else |
| current_x = extra; |
| totsize += extra; |
| |
| newnode->data = charalloc(strlen(tmp) + extra + 1); |
| strncpy(newnode->data, current->data, extra); |
| strcpy(&newnode->data[extra], tmp); |
| } else |
| #endif |
| { |
| current_x = 0; |
| newnode->data = charalloc(strlen(tmp) + 1); |
| strcpy(newnode->data, tmp); |
| } |
| *tmp = '\0'; |
| |
| if (current->next == NULL) { |
| filebot = newnode; |
| editbot = newnode; |
| } |
| splice_node(current, newnode, current->next); |
| |
| totsize++; |
| renumber(current); |
| current = newnode; |
| align(¤t->data); |
| |
| /* The logic here is as follows: |
| * -> If we are at the bottom of the buffer, we want to recenter |
| * (read: rebuild) the screen and forcibly move the cursor. |
| * -> otherwise, we want simply to redraw the screen and update |
| * where we think the cursor is. |
| */ |
| if (current_y == editwinrows - 1) { |
| #ifndef NANO_SMALL |
| if (ISSET(SMOOTHSCROLL)) |
| edit_update(current, NONE); |
| else |
| #endif |
| edit_update(current, CENTER); |
| reset_cursor(); |
| } else { |
| current_y++; |
| edit_refresh(); |
| update_cursor(); |
| } |
| |
| totlines++; |
| set_modified(); |
| |
| placewewant = xplustabs(); |
| return 1; |
| } |
| |
| #ifndef NANO_SMALL |
| int do_next_word(void) |
| { |
| filestruct *old = current; |
| |
| assert(current != NULL && current->data != NULL); |
| |
| /* Skip letters in this word first. */ |
| while (current->data[current_x] != '\0' && |
| isalnum((int)current->data[current_x])) |
| current_x++; |
| |
| for (; current != NULL; current = current->next) { |
| while (current->data[current_x] != '\0' && |
| !isalnum((int)current->data[current_x])) |
| current_x++; |
| |
| if (current->data[current_x] != '\0') |
| break; |
| |
| current_x = 0; |
| } |
| if (current == NULL) |
| current = filebot; |
| |
| placewewant = xplustabs(); |
| |
| if (current->lineno >= editbot->lineno) { |
| /* If we're on the last line, don't center the screen. */ |
| if (current->lineno == filebot->lineno) |
| edit_refresh(); |
| else |
| edit_update(current, CENTER); |
| } |
| else { |
| /* If we've jumped lines, refresh the old line. We can't just |
| use current->prev here, because we may have skipped over some |
| blank lines, in which case the previous line is the wrong |
| one. */ |
| if (current != old) { |
| update_line(old, 0); |
| /* If the mark was set, then the lines between old and |
| current have to be updated too. */ |
| if (ISSET(MARK_ISSET)) { |
| while (old->next != current) { |
| old = old->next; |
| update_line(old, 0); |
| } |
| } |
| } |
| update_line(current, current_x); |
| } |
| return 0; |
| } |
| |
| /* The same thing for backwards. */ |
| int do_prev_word(void) |
| { |
| filestruct *old = current; |
| |
| assert(current != NULL && current->data != NULL); |
| |
| /* Skip letters in this word first. */ |
| while (current_x >= 0 && isalnum((int)current->data[current_x])) |
| current_x--; |
| |
| for (; current != NULL; current = current->prev) { |
| while (current_x >= 0 && !isalnum((int)current->data[current_x])) |
| current_x--; |
| |
| if (current_x >= 0) |
| break; |
| |
| if (current->prev != NULL) |
| current_x = strlen(current->prev->data); |
| } |
| |
| if (current != NULL) { |
| while (current_x > 0 && isalnum((int)current->data[current_x - 1])) |
| current_x--; |
| } else { |
| current = fileage; |
| current_x = 0; |
| } |
| |
| placewewant = xplustabs(); |
| |
| if (current->lineno <= edittop->lineno) { |
| /* If we're on the first line, don't center the screen. */ |
| if (current->lineno == fileage->lineno) |
| edit_refresh(); |
| else |
| edit_update(current, CENTER); |
| } |
| else { |
| /* If we've jumped lines, refresh the old line. We can't just |
| use current->prev here, because we may have skipped over some |
| blank lines, in which case the previous line is the wrong |
| one. */ |
| if (current != old) { |
| update_line(old, 0); |
| /* If the mark was set, then the lines between old and |
| current have to be updated too. */ |
| if (ISSET(MARK_ISSET)) { |
| while (old->prev != current) { |
| old = old->prev; |
| update_line(old, 0); |
| } |
| } |
| } |
| update_line(current, current_x); |
| } |
| return 0; |
| } |
| #endif /* !NANO_SMALL */ |
| |
| int do_mark(void) |
| { |
| #ifdef NANO_SMALL |
| nano_disabled_msg(); |
| #else |
| if (!ISSET(MARK_ISSET)) { |
| statusbar(_("Mark Set")); |
| SET(MARK_ISSET); |
| mark_beginbuf = current; |
| mark_beginx = current_x; |
| } else { |
| statusbar(_("Mark UNset")); |
| UNSET(MARK_ISSET); |
| edit_refresh(); |
| } |
| #endif |
| return 1; |
| } |
| |
| void wrap_reset(void) |
| { |
| UNSET(SAMELINEWRAP); |
| } |
| |
| #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. */ |
| int do_wrap(filestruct *inptr) |
| { |
| size_t len = strlen(inptr->data); /* length of the line we wrap */ |
| int i = 0; /* generic loop variable */ |
| int wrap_loc = -1; /* index of inptr->data where we wrap */ |
| int word_back = -1; |
| #ifndef NANO_SMALL |
| const char *indentation = NULL; |
| /* indentation to prepend to the new line */ |
| int indent_len = 0; /* strlen(indentation) */ |
| #endif |
| const char *after_break; /* text after the wrap point */ |
| int after_break_len; /* strlen(after_break) */ |
| int wrapping = 0; /* do we prepend to the next line? */ |
| const char *wrap_line = NULL; |
| /* the next line, minus indentation */ |
| int wrap_line_len = 0; /* strlen(wrap_line) */ |
| char *newline = NULL; /* the line we create */ |
| int new_line_len = 0; /* eventual length of newline */ |
| |
| /* 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 white-space character. In this step, we set wrap_loc as the |
| * location of this replacement. |
| * |
| * Where should we break the line? We need the last "legal wrap point" |
| * such that the last word before it ended at or before fill. If there |
| * is no such point, we settle for the first legal wrap point. |
| * |
| * A "legal wrap point" is a white-space character that is not followed by |
| * white-space. |
| * |
| * If there is no legal wrap point or we found the last character of the |
| * line, we should return without wrapping. |
| * |
| * Note that the initial indentation does not count as a legal wrap |
| * point if we are going to auto-indent! |
| * |
| * Note that the code below could be optimised, by not calling strnlenpt() |
| * so often. */ |
| |
| #ifndef NANO_SMALL |
| if (ISSET(AUTOINDENT)) |
| i = indent_length(inptr->data); |
| #endif |
| wrap_line = inptr->data + i; |
| for(; i < len; i++, wrap_line++) { |
| /* record where the last word ended */ |
| if (*wrap_line != ' ' && *wrap_line != '\t') |
| word_back = i; |
| /* if we have found a "legal wrap point" and the current word |
| * extends too far, then we stop */ |
| if (wrap_loc != -1 && strnlenpt(inptr->data, word_back + 1) > fill) |
| break; |
| /* we record the latest "legal wrap point" */ |
| if (word_back != i && wrap_line[1] != ' ' && wrap_line[1] != '\t') |
| wrap_loc = i; |
| } |
| if (wrap_loc < 0 || i == len) |
| return 0; |
| |
| /* Step 2, making the new wrap line. It will consist of indentation + |
| * after_break + " " + wrap_line (although indentation and wrap_line are |
| * conditional on flags and #defines). */ |
| |
| /* after_break is the text that will be moved to the next line. */ |
| after_break = inptr->data + wrap_loc + 1; |
| after_break_len = len - wrap_loc - 1; |
| assert(after_break_len == strlen(after_break)); |
| |
| /* new_line_len will later be increased by the lengths of indentation |
| * and wrap_line. */ |
| new_line_len = after_break_len; |
| |
| /* We prepend the wrapped text to the next line, if the flag is set, |
| * and there is a next line, and prepending would not make the line |
| * too long. */ |
| if (ISSET(SAMELINEWRAP) && inptr->next) { |
| wrap_line = inptr->next->data; |
| wrap_line_len = strlen(wrap_line); |
| |
| /* +1 for the space between after_break and wrap_line */ |
| if ((new_line_len + 1 + wrap_line_len) <= fill) { |
| wrapping = 1; |
| new_line_len += (1 + wrap_line_len); |
| } |
| } |
| |
| #ifndef NANO_SMALL |
| if (ISSET(AUTOINDENT)) { |
| /* Indentation comes from the next line if wrapping, else from |
| * this line. */ |
| indentation = (wrapping ? wrap_line : inptr->data); |
| indent_len = indent_length(indentation); |
| if (wrapping) |
| /* The wrap_line text should not duplicate indentation. |
| * Note in this case we need not increase new_line_len. */ |
| wrap_line += indent_len; |
| else |
| new_line_len += indent_len; |
| } |
| #endif |
| |
| /* Now we allocate the new line and copy into it. */ |
| newline = charalloc(new_line_len + 1); /* +1 for \0 */ |
| *newline = '\0'; |
| |
| #ifndef NANO_SMALL |
| if (ISSET(AUTOINDENT)) { |
| strncpy(newline, indentation, indent_len); |
| newline[indent_len] = '\0'; |
| } |
| #endif |
| strcat(newline, after_break); |
| /* We end the old line after wrap_loc. Note this does not eat the |
| * space. */ |
| null_at(&inptr->data, wrap_loc + 1); |
| totsize++; |
| if (wrapping) { |
| /* In this case, totsize increases by 1 since we add a space |
| * between after_break and wrap_line. If the line already ends |
| * in a tab or a space, we don't add a space and decrement |
| * totsize to account for that. */ |
| if (!isspace(newline[strlen(newline) - 1])) |
| strcat(newline, " "); |
| else |
| totsize--; |
| strcat(newline, wrap_line); |
| free(inptr->next->data); |
| inptr->next->data = newline; |
| } else { |
| filestruct *temp = (filestruct *)nmalloc(sizeof(filestruct)); |
| |
| /* In this case, the file size changes by +1 for the new line, and |
| * +indent_len for the new indentation. */ |
| #ifndef NANO_SMALL |
| totsize += indent_len; |
| #endif |
| totlines++; |
| temp->data = newline; |
| temp->prev = inptr; |
| temp->next = inptr->next; |
| temp->prev->next = temp; |
| /* If temp->next is NULL, then temp is the last line of the |
| * file, so we must set filebot. */ |
| if (temp->next != NULL) |
| temp->next->prev = temp; |
| else |
| filebot = temp; |
| } |
| |
| /* Step 3, clean up. Here we reposition the cursor and mark, and do some |
| * other sundry things. */ |
| |
| /* later wraps of this line will be prepended to the next line. */ |
| SET(SAMELINEWRAP); |
| |
| /* Each line knows its line number. We recalculate these if we |
| * inserted a new line. */ |
| if (!wrapping) |
| renumber(inptr); |
| |
| /* If the cursor was after the break point, we must move it. */ |
| if (current_x > wrap_loc) { |
| current = current->next; |
| current_x -= |
| #ifndef NANO_SMALL |
| -indent_len + |
| #endif |
| wrap_loc + 1; |
| wrap_reset(); |
| 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, we must move it |
| * right. */ |
| if (mark_beginbuf == inptr && mark_beginx > wrap_loc) { |
| mark_beginbuf = inptr->next; |
| mark_beginx -= wrap_loc - indent_len + 1; |
| } else if (wrapping && mark_beginbuf == inptr->next) |
| mark_beginx += after_break_len; |
| #endif /* !NANO_SMALL */ |
| |
| /* Place the cursor. */ |
| reset_cursor(); |
| |
| return 1; |
| } |
| #endif /* !DISABLE_WRAPPING */ |
| |
| #ifndef DISABLE_SPELLER |
| /* word is misspelled in the file. Let the user replace it. We return |
| False if the user cancels. */ |
| int do_int_spell_fix(const char *word) |
| { |
| char *save_search; |
| char *save_replace; |
| filestruct *current_save = current; |
| int current_x_save = current_x; |
| filestruct *edittop_save = edittop; |
| /* Save where we are. */ |
| int i = 0; |
| /* The return value. */ |
| int reverse_search_set = ISSET(REVERSE_SEARCH); |
| #ifndef NANO_SMALL |
| int case_sens_set = ISSET(CASE_SENSITIVE); |
| int mark_set = ISSET(MARK_ISSET); |
| |
| SET(CASE_SENSITIVE); |
| /* Make sure the marking highlight is off during Spell Check */ |
| UNSET(MARK_ISSET); |
| #endif |
| /* Make sure Spell Check goes forward only */ |
| UNSET(REVERSE_SEARCH); |
| |
| /* save the current search/replace strings */ |
| search_init_globals(); |
| save_search = last_search; |
| save_replace = last_replace; |
| |
| /* set search/replace strings to mis-spelt word */ |
| last_search = mallocstrcpy(NULL, word); |
| last_replace = mallocstrcpy(NULL, word); |
| |
| /* start from the top of file */ |
| current = fileage; |
| current_x = -1; |
| |
| search_last_line = FALSE; |
| |
| /* We find the first whole-word occurrence of word. */ |
| while (findnextstr(TRUE, TRUE, fileage, -1, word)) |
| if (is_whole_word(current_x, current->data, word)) { |
| edit_refresh(); |
| |
| do_replace_highlight(TRUE, word); |
| |
| /* allow replace word to be corrected */ |
| i = statusq(0, spell_list, word, |
| #ifndef NANO_SMALL |
| NULL, |
| #endif |
| _("Edit a replacement")); |
| |
| do_replace_highlight(FALSE, word); |
| |
| if (i != -1 && strcmp(word, answer)) { |
| int j = 0; |
| |
| search_last_line = FALSE; |
| current_x--; |
| do_replace_loop(word, current_save, ¤t_x_save, TRUE, &j); |
| } |
| |
| break; |
| } |
| |
| /* restore the search/replace strings */ |
| free(last_search); last_search=save_search; |
| free(last_replace); last_replace=save_replace; |
| |
| /* restore where we were */ |
| current = current_save; |
| current_x = current_x_save; |
| edittop = edittop_save; |
| |
| /* restore Search/Replace direction */ |
| if (reverse_search_set) |
| SET(REVERSE_SEARCH); |
| |
| #ifndef NANO_SMALL |
| if (!case_sens_set) |
| UNSET(CASE_SENSITIVE); |
| |
| /* restore marking highlight */ |
| if (mark_set) |
| SET(MARK_ISSET); |
| #endif |
| |
| return i != -1; |
| } |
| |
| /* Integrated spell checking using 'spell' program. Return value: NULL |
| * for normal termination, otherwise the error string. */ |
| char *do_int_speller(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 in with the tempfile */ |
| 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 out 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 the PATH here!?!? */ |
| 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 in with 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 out 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 in with 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 out 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 = nrealloc(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. */ |
| char *do_alt_speller(char *tempfile_name) |
| { |
| int alt_spell_status, lineno_cur = current->lineno; |
| int x_cur = current_x, y_cur = current_y, pww_cur = placewewant; |
| pid_t pid_spell; |
| char *ptr; |
| static int arglen = 3; |
| static char **spellargs = (char **)NULL; |
| #ifndef NANO_SMALL |
| int mark_set = ISSET(MARK_ISSET); |
| int mbb_lineno_cur = 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. */ |
| |
| if (mark_set) { |
| mbb_lineno_cur = mark_beginbuf->lineno; |
| UNSET(MARK_ISSET); |
| } |
| #endif |
| |
| endwin(); |
| |
| /* Set up an argument list to pass the execvp function */ |
| if (spellargs == NULL) { |
| spellargs = nmalloc(arglen * sizeof(char *)); |
| |
| spellargs[0] = strtok(alt_speller, " "); |
| while ((ptr = strtok(NULL, " ")) != NULL) { |
| arglen++; |
| spellargs = 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 the PATH here!?!? */ |
| 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(); |
| free_filestruct(fileage); |
| global_init(1); |
| open_file(tempfile_name, 0, 1); |
| |
| #ifndef NANO_SMALL |
| if (mark_set) { |
| do_gotopos(mbb_lineno_cur, mark_beginx, y_cur, 0); |
| mark_beginbuf = current; |
| mark_beginx = current_x; |
| /* In case the line got shorter, assign mark_beginx. */ |
| SET(MARK_ISSET); |
| } |
| #endif |
| |
| /* go back to the old position, mark the file as modified, and make |
| sure that the titlebar is refreshed */ |
| do_gotopos(lineno_cur, x_cur, y_cur, pww_cur); |
| set_modified(); |
| clearok(topwin, FALSE); |
| titlebar(NULL); |
| |
| return NULL; |
| } |
| #endif |
| |
| int do_spell(void) |
| { |
| #ifdef DISABLE_SPELLER |
| nano_disabled_msg(); |
| return TRUE; |
| #else |
| char *temp, *spell_msg = _("Generic error"); |
| |
| if ((temp = safe_tempnam(0, "nano.")) == NULL) { |
| statusbar(_("Could not create a temporary filename: %s"), |
| strerror(errno)); |
| return 0; |
| } |
| |
| if (write_file(temp, 1, 0, 0) == -1) { |
| statusbar(_("Spell checking failed: unable to write temp file!")); |
| free(temp); |
| return 0; |
| } |
| |
| #ifdef ENABLE_MULTIBUFFER |
| /* update the current open_files entry before spell-checking, in case |
| any problems occur */ |
| add_open_file(1); |
| #endif |
| |
| if (alt_speller != NULL) |
| spell_msg = do_alt_speller(temp); |
| else |
| spell_msg = do_int_speller(temp); |
| remove(temp); |
| |
| if (spell_msg == NULL) { |
| statusbar(_("Finished checking spelling")); |
| return 1; |
| } else { |
| statusbar(_("Spell checking failed: %s"), spell_msg); |
| return 0; |
| } |
| |
| free(temp); |
| |
| #endif |
| } |
| |
| #if !defined(DISABLE_WRAPPING) && !defined(NANO_SMALL) || !defined(DISABLE_JUSTIFY) |
| /* The "indentation" of a line is the white-space between the quote part |
| * and the non-white-space of the line. */ |
| size_t indent_length(const char *line) |
| { |
| size_t len = 0; |
| |
| assert(line != NULL); |
| while (*line == ' ' || *line == '\t') { |
| line++; |
| len++; |
| } |
| return len; |
| } |
| #endif /* !DISABLE_WRAPPING && !NANO_SMALL || !DISABLE_JUSTIFY */ |
| |
| #ifndef DISABLE_JUSTIFY |
| /* justify_format() replaces Tab by Space and multiple spaces by 1 (except |
| * it maintains 2 after a . ! or ?). Note the terminating \0 |
| * counts as a space. |
| * |
| * If !changes_allowed and justify_format() needs to make a change, it |
| * returns 1, otherwise returns 0. |
| * |
| * If changes_allowed, justify_format() might make line->data |
| * shorter, and change the actual pointer with null_at(). |
| * |
| * justify_format() will not look at the first skip characters of line. |
| * skip should be at most strlen(line->data). The skip+1st character must |
| * not be whitespace. */ |
| int justify_format(int changes_allowed, filestruct *line, size_t skip) |
| { |
| const char *punct = ".?!"; |
| const char *brackets = "'\")}]>"; |
| char *back, *front; |
| |
| /* These four asserts are assumptions about the input data. */ |
| assert(line != NULL); |
| assert(line->data != NULL); |
| assert(skip <= strlen(line->data)); |
| assert(line->data[skip] != ' ' && line->data[skip] != '\t'); |
| |
| back = line->data + skip; |
| front = back; |
| for (; *front; front++) { |
| int remove_space = 0; |
| /* Do we want to remove this space? */ |
| |
| if (*front == '\t') { |
| if (!changes_allowed) |
| return 1; |
| *front = ' '; |
| } |
| /* these tests are safe since line->data + skip is not a space */ |
| if (*front == ' ' && *(front - 1) == ' ') { |
| const char *bob = front - 2; |
| |
| remove_space = 1; |
| for (bob = front - 2; bob >= line->data + skip; bob--) { |
| if (strchr(punct, *bob) != NULL) { |
| remove_space = 0; |
| break; |
| } |
| if (strchr(brackets, *bob) == NULL) |
| break; |
| } |
| } |
| |
| if (remove_space) { |
| /* Now *front is a space we want to remove. We do that by |
| * simply failing to assign it to *back. */ |
| if (!changes_allowed) |
| return 1; |
| #ifndef NANO_SMALL |
| if (mark_beginbuf == line && back - line->data < mark_beginx) |
| mark_beginx--; |
| #endif |
| } else { |
| *back = *front; |
| back++; |
| } |
| } |
| |
| /* Remove spaces from the end of the line, except maintain 1 after a |
| * sentence punctuation. */ |
| while (line->data < back && *(back - 1) == ' ') |
| back--; |
| if (line->data < back && *back == ' ' && |
| strchr(punct, *(back - 1)) != NULL) |
| back++; |
| if (!changes_allowed && back != front) |
| return 1; |
| |
| /* This assert merely documents a fact about the loop above. */ |
| assert(changes_allowed != 0 || back == front); |
| |
| /* Now back is the new end of line->data. */ |
| if (back != front) { |
| totsize += back - line->data - strlen(line->data); |
| null_at(&line->data, back - line->data); |
| #ifndef NANO_SMALL |
| if (mark_beginbuf == line && back - line->data < mark_beginx) |
| mark_beginx = back - line->data; |
| #endif |
| } |
| return 0; |
| } |
| |
| /* 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. */ |
| #ifdef HAVE_REGEX_H |
| size_t quote_length(const char *line, const regex_t *qreg) |
| { |
| regmatch_t matches; |
| int rc = regexec(qreg, 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 quote_length(const char *line) |
| { |
| size_t qdepth = 0; |
| size_t qlen = strlen(quotestr); |
| |
| /* Compute quote depth level */ |
| while (!strcmp(line + qdepth, quotestr)) |
| qdepth += qlen; |
| 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. */ |
| int quotes_match(const char *a_line, size_t a_quote, |
| IFREG(const char *b_line, const regex_t *qreg)) |
| { |
| /* Here is the assumption about a_quote: */ |
| assert(a_quote == quote_length(IFREG(a_line, qreg))); |
| return a_quote == quote_length(IFREG(b_line, qreg)) && |
| !strncmp(a_line, b_line, a_quote); |
| } |
| |
| /* We assume a_line and b_line have no quote part. Then, we return whether |
| * b_line could follow a_line in a paragraph. */ |
| size_t 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); |
| } |
| |
| /* Put the next par_len lines, starting with first_line, in the cut |
| * buffer. We assume there are enough lines after first_line. We leave |
| * copies of the lines in place, too. We return the new copy of |
| * first_line. */ |
| filestruct *backup_lines(filestruct *first_line, size_t par_len, |
| size_t quote_len) |
| { |
| /* We put the original lines, not copies, into the cut buffer, just |
| * out of a misguided sense of consistency, so if you un-cut, you |
| * get the actual same paragraph back, not a copy. */ |
| filestruct *alice = first_line; |
| |
| set_modified(); |
| cutbuffer = NULL; |
| for(; par_len > 0; par_len--) { |
| filestruct *bob = copy_node(alice); |
| |
| if (alice == first_line) |
| first_line = bob; |
| if (alice == current) |
| current = bob; |
| if (alice == edittop) |
| edittop = bob; |
| #ifndef NANO_SMALL |
| if (alice == mark_beginbuf) |
| mark_beginbuf = bob; |
| #endif |
| justify_format(1, bob, |
| quote_len + indent_length(bob->data + quote_len)); |
| |
| assert(alice != NULL && bob != NULL); |
| add_to_cutbuffer(alice); |
| splice_node(bob->prev, bob, bob->next); |
| alice = bob->next; |
| } |
| return first_line; |
| } |
| |
| /* Is it possible to break line at or before goal? */ |
| int breakable(const char *line, int goal) |
| { |
| for(; *line != '\0' && goal >= 0; line++) { |
| if (*line == ' ' || *line == '\t') |
| return TRUE; |
| |
| if (is_cntrl_char(*line) != 0) |
| goal -= 2; |
| else |
| goal -= 1; |
| } |
| return FALSE; |
| } |
| |
| /* We are trying to break a chunk off line. We find the last space such |
| * that the display length to there is at most goal + 1. If there is |
| * no such space, and force is not 0, then we find the first space. |
| * Anyway, we then take the last space in that group of spaces. The |
| * terminating '\0' counts as a space. */ |
| int break_line(const char *line, int goal, int force) |
| { |
| /* Note that we use int instead of size_t, since goal is at most COLS, |
| * the screen width, which will always be reasonably small. */ |
| int space_loc = -1; |
| /* Current tentative return value. Index of the last space we |
| * found with short enough display width. */ |
| int cur_loc = 0; |
| /* Current index in line */ |
| |
| assert(line != NULL); |
| for(; *line != '\0' && goal >= 0; line++, cur_loc++) { |
| if (*line == ' ') |
| space_loc = cur_loc; |
| assert(*line != '\t'); |
| |
| if (is_cntrl_char(*line)) |
| goal -= 2; |
| else |
| goal--; |
| } |
| if (goal >= 0) |
| /* In fact, the whole line displays shorter than goal. */ |
| return cur_loc; |
| if (space_loc == -1) { |
| /* No space found short enough. */ |
| if (force) |
| for(; *line != '\0'; line++, cur_loc++) |
| if (*line == ' ' && *(line + 1) != ' ') |
| return cur_loc; |
| return -1; |
| } |
| /* Perhaps the character after space_loc is a space. But because |
| * of justify_format(), there can be only two adjacent. */ |
| if (*(line - cur_loc + space_loc + 1) == ' ' || |
| *(line - cur_loc + space_loc + 1) == '\0') |
| space_loc++; |
| return space_loc; |
| } |
| #endif /* !DISABLE_JUSTIFY */ |
| |
| /* This function justifies the current paragraph. */ |
| int do_justify(void) |
| { |
| #ifdef DISABLE_JUSTIFY |
| nano_disabled_msg(); |
| return 1; |
| #else |
| |
| /* To explain the justifying algorithm, I first need to define some |
| * phrases about paragraphs and quotation: |
| * 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 is not set. |
| * The reason for number 5) is that if AUTOINDENT is not set, then an |
| * indented line is expected to start a paragraph, like in books. Thus, |
| * nano can justify an indented paragraph only if AUTOINDENT is turned |
| * on. |
| * |
| * A contiguous set of lines is a "paragraph" if each line is part of |
| * a paragraph and only the first line is the beginning of a paragraph. |
| */ |
| |
| size_t quote_len; |
| /* Length of the initial quotation of the paragraph we justify. */ |
| size_t par_len; |
| /* Number of lines in that paragraph. */ |
| filestruct *first_mod_line = NULL; |
| /* Will be the first line of the resulting justified paragraph |
| * that differs from the original. For restoring after uncut. */ |
| filestruct *last_par_line = current; |
| /* Will be the last line of the result, also for uncut. */ |
| filestruct *cutbuffer_save = cutbuffer; |
| /* When the paragraph gets modified, all lines from the changed |
| * one down are stored in the cut buffer. We back up the original |
| * to restore it later. */ |
| |
| /* We save these global variables to be restored if the user |
| * unjustifies. Note we don't need to save totlines. */ |
| int current_x_save = current_x; |
| int current_y_save = current_y; |
| filestruct *current_save = current; |
| int flags_save = flags; |
| long totsize_save = totsize; |
| filestruct *edittop_save = edittop; |
| filestruct *editbot_save = editbot; |
| #ifndef NANO_SMALL |
| filestruct *mark_beginbuf_save = mark_beginbuf; |
| int mark_beginx_save = mark_beginx; |
| #endif |
| |
| size_t indent_len; /* generic indentation length */ |
| filestruct *line; /* generic line of text */ |
| size_t i; /* generic loop variable */ |
| |
| #ifdef HAVE_REGEX_H |
| regex_t qreg; /* qreg is the compiled quotation regexp. |
| * We no longer care about quotestr. */ |
| int rc = regcomp(&qreg, quotestr, REG_EXTENDED); |
| |
| if (rc) { |
| size_t size = regerror(rc, &qreg, NULL, 0); |
| char *strerror = charalloc(size); |
| |
| regerror(rc, &qreg, strerror, size); |
| statusbar(_("Bad quote string %s: %s"), quotestr, strerror); |
| free(strerror); |
| return -1; |
| } |
| #endif |
| |
| /* Here is an assumption that is always true anyway. */ |
| assert(current != NULL); |
| |
| /* Here we find the first line of the paragraph to justify. If the |
| * current line is in a paragraph, then we move back to the first line. |
| * Otherwise we move down to the first line that is in a paragraph. */ |
| quote_len = quote_length(IFREG(current->data, &qreg)); |
| indent_len = indent_length(current->data + quote_len); |
| |
| current_x = 0; |
| if (current->data[quote_len + indent_len] != '\0') { |
| /* This line is part of a paragraph. So we must search back to |
| * the first line of this paragraph. First we check items 1) and |
| * 3) above. */ |
| while (current->prev != NULL && quotes_match(current->data, |
| quote_len, IFREG(current->prev->data, &qreg))) { |
| size_t temp_id_len = |
| indent_length(current->prev->data + quote_len); |
| /* The indentation length of the previous line. */ |
| |
| /* Is this line the beginning of a paragraph, according to |
| items 2), 5), or 4) above? If so, stop. */ |
| if (current->prev->data[quote_len + temp_id_len] == '\0' || |
| (quote_len == 0 && indent_len > 0 |
| #ifndef NANO_SMALL |
| && !ISSET(AUTOINDENT) |
| #endif |
| ) || |
| !indents_match(current->prev->data + quote_len, |
| temp_id_len, current->data + quote_len, indent_len)) |
| break; |
| indent_len = temp_id_len; |
| current = current->prev; |
| current_y--; |
| } |
| } else { |
| /* This line is not part of a paragraph. Move down until we get |
| * to a non "blank" line. */ |
| do { |
| /* There is no next paragraph, so nothing to justify. */ |
| if (current->next == NULL) { |
| placewewant = 0; |
| if (current_y > editwinrows - 1) |
| edit_update(current, CENTER); |
| else |
| edit_refresh(); |
| return 0; |
| } |
| current = current->next; |
| current_y++; |
| quote_len = quote_length(IFREG(current->data, &qreg)); |
| indent_len = indent_length(current->data + quote_len); |
| } while (current->data[quote_len + indent_len] == '\0'); |
| } |
| /* Now current is the first line of the paragraph, and quote_len |
| * is the quotation length of that line. */ |
| |
| /* Next step, compute par_len, the number of lines in this paragraph. */ |
| line = current; |
| par_len = 1; |
| indent_len = indent_length(line->data + quote_len); |
| |
| while (line->next != NULL && quotes_match(current->data, quote_len, |
| IFREG(line->next->data, &qreg))) { |
| size_t temp_id_len = indent_length(line->next->data + quote_len); |
| |
| if (!indents_match(line->data + quote_len, indent_len, |
| line->next->data + quote_len, temp_id_len) || |
| line->next->data[quote_len + temp_id_len] == '\0' || |
| (quote_len == 0 && temp_id_len > 0 |
| #ifndef NANO_SMALL |
| && !ISSET(AUTOINDENT) |
| #endif |
| )) |
| break; |
| indent_len = temp_id_len; |
| line = line->next; |
| par_len++; |
| } |
| #ifdef HAVE_REGEX_H |
| /* We no longer need to check quotation. */ |
| regfree(&qreg); |
| #endif |
| /* Now par_len is the number of lines in this paragraph. Should never |
| * call quotes_match() or quote_length() again. */ |
| |
| /* Next step, we loop through the lines of this paragraph, justifying |
| * each one individually. */ |
| for(; par_len > 0; current_y++, par_len--) { |
| size_t line_len; |
| size_t display_len; |
| /* The width of current in screen columns. */ |
| int break_pos; |
| /* Where we will break the line. */ |
| |
| indent_len = indent_length(current->data + quote_len) + |
| quote_len; |
| /* justify_format() removes excess spaces from the line, and |
| * changes tabs to spaces. The first argument, 0, means don't |
| * change the line, just say whether there are changes to be |
| * made. If there are, we do backup_lines(), which copies the |
| * original paragraph to the cutbuffer for unjustification, and |
| * then calls justify_format() on the remaining lines. */ |
| if (first_mod_line == NULL && justify_format(0, current, indent_len)) |
| first_mod_line = backup_lines(current, par_len, quote_len); |
| |
| line_len = strlen(current->data); |
| display_len = strlenpt(current->data); |
| |
| if (display_len > fill) { |
| /* The line is too long. Try to wrap it to the next. */ |
| break_pos = break_line(current->data + indent_len, |
| fill - strnlenpt(current->data, indent_len), |
| 1); |
| if (break_pos == -1 || break_pos + indent_len == line_len) |
| /* We can't break the line, or don't need to, so just go |
| * on to the next. */ |
| goto continue_loc; |
| break_pos += indent_len; |
| assert(break_pos < line_len); |
| /* If we haven't backed up the paragraph, do it now. */ |
| if (first_mod_line == NULL) |
| first_mod_line = backup_lines(current, par_len, quote_len); |
| if (par_len == 1) { |
| /* There is no next line in this paragraph. We make a new |
| * line and copy text after break_pos into it. */ |
| splice_node(current, make_new_node(current), |
| current->next); |
| current->next->data = charalloc(indent_len + line_len - |
| break_pos); |
| strncpy(current->next->data, current->data, |
| indent_len); |
| strcpy(current->next->data + indent_len, |
| current->data + break_pos + 1); |
| assert(strlen(current->next->data) == |
| indent_len + line_len - break_pos - 1); |
| totlines++; |
| totsize += indent_len; |
| par_len++; |
| } else { |
| size_t next_line_len = strlen(current->next->data); |
| |
| indent_len = quote_len + |
| indent_length(current->next->data + quote_len); |
| current->next->data = (char *)nrealloc(current->next->data, |
| sizeof(char) * (next_line_len + line_len - |
| break_pos + 1)); |
| |
| memmove(current->next->data + indent_len + line_len - break_pos, |
| current->next->data + indent_len, |
| next_line_len - indent_len + 1); |
| strcpy(current->next->data + indent_len, |
| current->data + break_pos + 1); |
| current->next->data[indent_len + line_len - break_pos - 1] |
| = ' '; |
| #ifndef NANO_SMALL |
| if (mark_beginbuf == current->next) { |
| if (mark_beginx < indent_len) |
| mark_beginx = indent_len; |
| mark_beginx += line_len - break_pos; |
| } |
| #endif |
| } |
| #ifndef NANO_SMALL |
| if (mark_beginbuf == current && mark_beginx > break_pos) { |
| mark_beginbuf = current->next; |
| mark_beginx -= break_pos + 1 - indent_len; |
| } |
| #endif |
| null_at(¤t->data, break_pos); |
| current = current->next; |
| } else if (display_len < fill && par_len > 1) { |
| size_t next_line_len; |
| |
| indent_len = quote_len + |
| indent_length(current->next->data + quote_len); |
| /* If we can't pull a word from the next line up to this one, |
| * just go on. */ |
| if (!breakable(current->next->data + indent_len, |
| fill - display_len - 1)) |
| goto continue_loc; |
| |
| /* If we haven't backed up the paragraph, do it now. */ |
| if (first_mod_line == NULL) |
| first_mod_line = backup_lines(current, par_len, quote_len); |
| |
| break_pos = break_line(current->next->data + indent_len, |
| fill - display_len - 1, FALSE); |
| assert(break_pos != -1); |
| |
| current->data = (char *)nrealloc(current->data, |
| line_len + break_pos + 2); |
| current->data[line_len] = ' '; |
| strncpy(current->data + line_len + 1, |
| current->next->data + indent_len, break_pos); |
| current->data[line_len + break_pos + 1] = '\0'; |
| #ifndef NANO_SMALL |
| if (mark_beginbuf == current->next) { |
| if (mark_beginx < indent_len + break_pos) { |
| mark_beginbuf = current; |
| if (mark_beginx <= indent_len) |
| mark_beginx = line_len + 1; |
| else |
| mark_beginx = line_len + 1 + mark_beginx - indent_len; |
| } else |
| mark_beginx -= break_pos + 1; |
| } |
| #endif |
| next_line_len = strlen(current->next->data); |
| if (indent_len + break_pos == next_line_len) { |
| line = current->next; |
| |
| /* Don't destroy edittop! */ |
| if (line == edittop) |
| edittop = current; |
| |
| unlink_node(line); |
| delete_node(line); |
| totlines--; |
| totsize -= indent_len; |
| current_y--; |
| } else { |
| memmove(current->next->data + indent_len, |
| current->next->data + indent_len + break_pos + 1, |
| next_line_len - break_pos - indent_len); |
| null_at(¤t->next->data, |
| next_line_len - break_pos); |
| current = current->next; |
| } |
| } else |
| continue_loc: |
| current = current->next; |
| } |
| /* We are now done justifying the paragraph. There are cleanup things to |
| * do, and we check for unjustify. */ |
| |
| /* totlines, totsize, and current_y have been maintained above. We |
| * now set last_par_line to the new end of the paragraph, update |
| * fileage, set current_x. Also, edit_refresh() needs the line |
| * numbers to be right, so we renumber(). */ |
| last_par_line = current->prev; |
| if (first_mod_line != NULL) { |
| if (first_mod_line->prev == NULL) |
| fileage = first_mod_line; |
| renumber(first_mod_line); |
| } |
| |
| if (current_y > editwinrows - 1) |
| edit_update(current, CENTER); |
| else |
| edit_refresh(); |
| |
| statusbar(_("Can now UnJustify!")); |
| /* Change the shortcut list to display the unjustify code */ |
| shortcut_init(1); |
| display_main_list(); |
| reset_cursor(); |
| |
| /* Now get a keystroke and see if it's unjustify; if not, unget the |
| * keystroke and return. */ |
| |
| #if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION) |
| /* If it was a mouse click, parse it with do_mouse() and it might |
| * become the unjustify key. Else give it back to the input stream. */ |
| if ((i = wgetch(edit)) == KEY_MOUSE) |
| do_mouse(); |
| else |
| ungetch(i); |
| #endif |
| |
| if ((i = wgetch(edit)) != NANO_UNJUSTIFY_KEY) { |
| ungetch(i); |
| /* Did we back up anything at all? */ |
| if (cutbuffer != cutbuffer_save) |
| free_filestruct(cutbuffer); |
| placewewant = 0; |
| } else { |
| /* Else restore the justify we just did (ungrateful user!) */ |
| current = current_save; |
| current_x = current_x_save; |
| current_y = current_y_save; |
| edittop = edittop_save; |
| editbot = editbot_save; |
| if (first_mod_line != NULL) { |
| filestruct *cutbottom = get_cutbottom(); |
| |
| /* Splice the cutbuffer back into the file. */ |
| cutbottom->next = last_par_line->next; |
| cutbottom->next->prev = cutbottom; |
| /* The line numbers after the end of the paragraph have |
| * been changed, so we change them back. */ |
| renumber(cutbottom->next); |
| if (first_mod_line->prev != NULL) { |
| cutbuffer->prev = first_mod_line->prev; |
| cutbuffer->prev->next = cutbuffer; |
| } else |
| fileage = cutbuffer; |
| cutbuffer = NULL; |
| |
| last_par_line->next = NULL; |
| free_filestruct(first_mod_line); |
| |
| /* Restore global variables from before justify */ |
| totsize = totsize_save; |
| totlines = filebot->lineno; |
| #ifndef NANO_SMALL |
| mark_beginbuf = mark_beginbuf_save; |
| mark_beginx = mark_beginx_save; |
| #endif |
| flags = flags_save; |
| if (!ISSET(MODIFIED)) { |
| titlebar(NULL); |
| wrefresh(topwin); |
| } |
| } |
| edit_refresh(); |
| } |
| UNSET(KEEP_CUTBUFFER); |
| cutbuffer = cutbuffer_save; |
| blank_statusbar_refresh(); |
| /* display shortcut list without UnCut */ |
| shortcut_init(0); |
| display_main_list(); |
| |
| return 0; |
| #endif |
| } |
| |
| int do_exit(void) |
| { |
| int i; |
| |
| if (!ISSET(MODIFIED)) { |
| |
| #ifdef ENABLE_MULTIBUFFER |
| if (!close_open_file()) { |
| display_main_list(); |
| return 1; |
| } |
| else |
| #endif |
| finish(0); |
| } |
| |
| if (ISSET(TEMP_OPT)) { |
| i = 1; |
| } else { |
| i = do_yesno(0, 0, |
| _ |
| ("Save modified buffer (ANSWERING \"No\" WILL DESTROY CHANGES) ? ")); |
| } |
| |
| #ifdef DEBUG |
| dump_buffer(fileage); |
| #endif |
| |
| if (i == 1) { |
| if (do_writeout(filename, 1, 0) > 0) { |
| |
| #ifdef ENABLE_MULTIBUFFER |
| if (!close_open_file()) { |
| display_main_list(); |
| return 1; |
| } |
| else |
| #endif |
| finish(0); |
| } |
| } else if (i == 0) { |
| |
| #ifdef ENABLE_MULTIBUFFER |
| if (!close_open_file()) { |
| display_main_list(); |
| return 1; |
| } |
| else |
| #endif |
| finish(0); |
| } else |
| statusbar(_("Cancelled")); |
| |
| display_main_list(); |
| return 1; |
| } |
| |
| void signal_init(void) |
| { |
| #ifdef _POSIX_VDISABLE |
| struct termios term; |
| #endif |
| |
| /* Trap SIGINT and SIGQUIT cuz we want them to do useful things. */ |
| memset(&act, 0, sizeof(struct sigaction)); |
| act.sa_handler = SIG_IGN; |
| sigaction(SIGINT, &act, NULL); |
| |
| /* Trap SIGHUP and SIGTERM cuz we want to write the file out. */ |
| act.sa_handler = handle_hupterm; |
| sigaction(SIGHUP, &act, NULL); |
| sigaction(SIGTERM, &act, NULL); |
| |
| #ifndef NANO_SMALL |
| act.sa_handler = handle_sigwinch; |
| sigaction(SIGWINCH, &act, NULL); |
| #endif |
| |
| #ifdef _POSIX_VDISABLE |
| tcgetattr(0, &term); |
| |
| if (!ISSET(PRESERVE)) { |
| /* Ignore ^S and ^Q, much to Chris' chagrin */ |
| term.c_cc[VSTOP] = _POSIX_VDISABLE; |
| term.c_cc[VSTART] = _POSIX_VDISABLE; |
| } |
| #ifdef VDSUSP |
| term.c_cc[VDSUSP] = _POSIX_VDISABLE; |
| #endif /* VDSUSP */ |
| |
| #endif /* _POSIX_VDISABLE */ |
| |
| if (!ISSET(SUSPEND)) { |
| /* Insane! */ |
| #ifdef _POSIX_VDISABLE |
| term.c_cc[VSUSP] = _POSIX_VDISABLE; |
| #else |
| act.sa_handler = SIG_IGN; |
| sigaction(SIGTSTP, &act, NULL); |
| #endif |
| } else { |
| /* If we don't do this, it seems other stuff interrupts the |
| suspend handler! Try using nano with mutt without this |
| line. */ |
| sigfillset(&act.sa_mask); |
| |
| act.sa_handler = do_suspend; |
| sigaction(SIGTSTP, &act, NULL); |
| |
| act.sa_handler = do_cont; |
| sigaction(SIGCONT, &act, NULL); |
| } |
| |
| #ifdef _POSIX_VDISABLE |
| tcsetattr(0, TCSANOW, &term); |
| #endif |
| } |
| |
| /* Handler for SIGHUP and SIGTERM */ |
| RETSIGTYPE handle_hupterm(int signal) |
| { |
| die(_("Received SIGHUP or SIGTERM\n")); |
| } |
| |
| /* What do we do when we catch the suspend signal */ |
| RETSIGTYPE do_suspend(int signal) |
| { |
| endwin(); |
| printf("\n\n\n\n\nUse \"fg\" to return to nano\n"); |
| fflush(stdout); |
| |
| /* Restore the terminal settings for the disabled keys */ |
| tcsetattr(0, TCSANOW, &oldterm); |
| |
| /* We used to re-enable the default SIG_DFL and raise SIGTSTP, but |
| then we could be (and were) interrupted in the middle of the call. |
| So we do it the mutt way instead */ |
| kill(0, SIGSTOP); |
| } |
| |
| /* Restore the suspend handler when we come back into the prog */ |
| RETSIGTYPE do_cont(int signal) |
| { |
| /* Now we just update the screen instead of having to reenable the |
| SIGTSTP handler. */ |
| |
| doupdate(); |
| /* The Hurd seems to need this, otherwise a ^Y after a ^Z will |
| start suspending again. */ |
| signal_init(); |
| |
| #ifndef NANO_SMALL |
| /* Perhaps the user resized the window while we slept. */ |
| handle_sigwinch(0); |
| #endif |
| } |
| |
| #ifndef NANO_SMALL |
| void handle_sigwinch(int s) |
| { |
| const char *tty = ttyname(0); |
| int fd; |
| int 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; |
| if ((editwinrows = LINES - 5 + no_help()) < MIN_EDITOR_ROWS) |
| die_too_small(); |
| |
| #ifndef DISABLE_WRAPJUSTIFY |
| fill = wrap_at; |
| if (fill <= 0) |
| fill += COLS; |
| if (fill < MIN_FILL_LENGTH) |
| die_too_small(); |
| #endif |
| |
| hblank = nrealloc(hblank, COLS + 1); |
| memset(hblank, ' ', COLS); |
| hblank[COLS] = '\0'; |
| |
| #ifdef HAVE_RESIZETERM |
| resizeterm(LINES, COLS); |
| #ifdef HAVE_WRESIZE |
| if (wresize(topwin, 2, COLS) == ERR) |
| die(_("Cannot resize top win")); |
| if (mvwin(topwin, 0, 0) == ERR) |
| die(_("Cannot move top win")); |
| if (wresize(edit, editwinrows, COLS) == ERR) |
| die(_("Cannot resize edit win")); |
| if (mvwin(edit, 2, 0) == ERR) |
| die(_("Cannot move edit win")); |
| if (wresize(bottomwin, 3 - no_help(), COLS) == ERR) |
| die(_("Cannot resize bottom win")); |
| if (mvwin(bottomwin, LINES - 3 + no_help(), 0) == ERR) |
| die(_("Cannot move bottom win")); |
| #endif /* HAVE_WRESIZE */ |
| #endif /* HAVE_RESIZETERM */ |
| |
| fix_editbot(); |
| |
| if (current_y > editwinrows - 1) |
| edit_update(editbot, CENTER); |
| erase(); |
| |
| /* Do these b/c width may have changed... */ |
| refresh(); |
| titlebar(NULL); |
| edit_refresh(); |
| display_main_list(); |
| blank_statusbar(); |
| total_refresh(); |
| |
| /* Turn cursor back on for sure */ |
| curs_set(1); |
| |
| /* Jump back to main loop */ |
| siglongjmp(jmpbuf, 1); |
| } |
| #endif /* !NANO_SMALL */ |
| |
| /* If the NumLock key has made the keypad go awry, print an error |
| message; hopefully we can address it later. */ |
| void print_numlock_warning(void) |
| { |
| static int didmsg = 0; |
| if (!didmsg) { |
| statusbar(_ |
| ("NumLock glitch detected. Keypad will malfunction with NumLock off")); |
| didmsg = 1; |
| } |
| } |
| |
| #ifndef NANO_SMALL |
| void do_toggle(const toggle *which) |
| { |
| int enabled; |
| |
| /* Even easier! */ |
| TOGGLE(which->flag); |
| |
| switch (which->val) { |
| case TOGGLE_SUSPEND_KEY: |
| signal_init(); |
| break; |
| #if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION) |
| case TOGGLE_MOUSE_KEY: |
| mouse_init(); |
| break; |
| #endif |
| case TOGGLE_NOHELP_KEY: |
| wclear(bottomwin); |
| wrefresh(bottomwin); |
| window_init(); |
| fix_editbot(); |
| edit_refresh(); |
| display_main_list(); |
| break; |
| case TOGGLE_DOS_KEY: |
| UNSET(MAC_FILE); |
| break; |
| case TOGGLE_MAC_KEY: |
| UNSET(DOS_FILE); |
| break; |
| #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 */ |
| |
| /* This function returns the correct keystroke, given the A,B,C or D |
| input key. This is a common sequence of many terms which send |
| Esc-O-[A-D] or Esc-[-[A-D]. */ |
| int abcd(int input) |
| { |
| switch (input) { |
| case 'A': |
| case 'a': |
| return KEY_UP; |
| case 'B': |
| case 'b': |
| return KEY_DOWN; |
| case 'C': |
| case 'c': |
| return KEY_RIGHT; |
| case 'D': |
| case 'd': |
| return KEY_LEFT; |
| default: |
| return 0; |
| } |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| int optchr; |
| int startline = 0; /* Line to try and start at */ |
| int modify_control_seq; |
| int fill_flag_used = 0; /* Was the fill option used? */ |
| const shortcut *s; |
| #ifdef HAVE_GETOPT_LONG |
| int preserveopt = 0; /* Did the cmdline include --preserve? */ |
| #endif |
| #ifndef NANO_SMALL |
| const toggle *t; |
| #endif |
| #ifdef _POSIX_VDISABLE |
| struct termios term; |
| #endif |
| #ifdef HAVE_GETOPT_LONG |
| int option_index = 0; |
| const struct option long_options[] = { |
| {"help", 0, 0, 'h'}, |
| #ifdef ENABLE_MULTIBUFFER |
| {"multibuffer", 0, 0, 'F'}, |
| #endif |
| #ifdef ENABLE_NANORC |
| {"historylog", 0, 0, 'H'}, |
| {"ignorercfiles", 0, 0, 'I'}, |
| #endif |
| {"keypad", 0, 0, 'K'}, |
| #ifndef DISABLE_JUSTIFY |
| {"quotestr", 1, 0, 'Q'}, |
| #endif |
| #ifdef HAVE_REGEX_H |
| {"regexp", 0, 0, 'R'}, |
| #endif |
| {"tabsize", 1, 0, 'T'}, |
| {"version", 0, 0, 'V'}, |
| #ifdef ENABLE_COLOR |
| {"syntax", 1, 0, 'Y'}, |
| #endif |
| {"const", 0, 0, 'c'}, |
| {"nofollow", 0, 0, 'l'}, |
| #if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION) |
| {"mouse", 0, 0, 'm'}, |
| #endif |
| #ifndef DISABLE_OPERATINGDIR |
| {"operatingdir", 1, 0, 'o'}, |
| #endif |
| {"preserve", 0, 0, 'p'}, |
| #ifndef DISABLE_WRAPJUSTIFY |
| {"fill", 1, 0, 'r'}, |
| #endif |
| #ifndef DISABLE_SPELLER |
| {"speller", 1, 0, 's'}, |
| #endif |
| {"tempfile", 0, 0, 't'}, |
| {"view", 0, 0, 'v'}, |
| #ifndef DISABLE_WRAPPING |
| {"nowrap", 0, 0, 'w'}, |
| #endif |
| {"nohelp", 0, 0, 'x'}, |
| {"suspend", 0, 0, 'z'}, |
| #ifndef NANO_SMALL |
| {"backup", 0, 0, 'B'}, |
| {"dos", 0, 0, 'D'}, |
| {"mac", 0, 0, 'M'}, |
| {"noconvert", 0, 0, 'N'}, |
| {"smooth", 0, 0, 'S'}, |
| {"autoindent", 0, 0, 'i'}, |
| {"cut", 0, 0, 'k'}, |
| #endif |
| {0, 0, 0, 0} |
| }; |
| #endif |
| |
| #ifdef ENABLE_NLS |
| setlocale(LC_ALL, ""); |
| bindtextdomain(PACKAGE, LOCALEDIR); |
| textdomain(PACKAGE); |
| #endif |
| |
| #ifdef HAVE_GETOPT_LONG |
| { |
| /* Check for the --preserve flag, and report error if people are |
| still using --pico. */ |
| int i; |
| for (i = 1; i < argc; i++) { |
| if (!strcmp(argv[i], "--preserve")) |
| preserveopt = 1; |
| else if (!strcmp(argv[i], "--pico")) |
| do_preserve_msg(); |
| } |
| } |
| #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() == 0) |
| SET(NO_WRAP); |
| #endif |
| |
| #ifdef HAVE_GETOPT_LONG |
| while ((optchr = getopt_long(argc, argv, "h?BDFHIKMNQ:RST:VY:abcefgijklmo:pr:s:tvwxz", |
| long_options, &option_index)) != -1) { |
| #else |
| while ((optchr = |
| getopt(argc, argv, "h?BDFHIKMNQ:RST:VY:abcefgijklmo:pr:s:tvwxz")) != -1) { |
| #endif |
| |
| switch (optchr) { |
| |
| case 'a': |
| case 'b': |
| case 'e': |
| case 'f': |
| case 'g': |
| case 'j': |
| /* Pico compatibility flags */ |
| break; |
| #ifndef NANO_SMALL |
| case 'B': |
| SET(BACKUP_FILE); |
| break; |
| case 'D': |
| SET(DOS_FILE); |
| break; |
| #endif |
| #ifdef ENABLE_MULTIBUFFER |
| case 'F': |
| SET(MULTIBUFFER); |
| break; |
| #endif |
| #ifdef ENABLE_NANORC |
| case 'H': |
| SET(HISTORYLOG); |
| break; |
| case 'I': |
| SET(NO_RCFILE); |
| break; |
| #endif |
| case 'K': |
| SET(ALT_KEYPAD); |
| break; |
| #ifndef NANO_SMALL |
| case 'M': |
| SET(MAC_FILE); |
| break; |
| case 'N': |
| SET(NO_CONVERT); |
| break; |
| #endif |
| #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': |
| { |
| int i; |
| char *first_error; |
| |
| /* Using strtol() instead of atoi() lets us accept 0 |
| * while checking other errors. */ |
| i = (int)strtol(optarg, &first_error, 10); |
| if (errno == ERANGE || *optarg == '\0' || *first_error != '\0') |
| usage(); |
| else |
| tabsize = i; |
| if (tabsize <= 0) { |
| fprintf(stderr, _("Tab size is too small for nano...\n")); |
| exit(1); |
| } |
| } |
| break; |
| case 'V': |
| version(); |
| exit(0); |
| #ifdef ENABLE_COLOR |
| case 'Y': |
| syntaxstr = mallocstrcpy(syntaxstr, optarg); |
| break; |
| #endif |
| case 'c': |
| SET(CONSTUPDATE); |
| break; |
| #ifndef NANO_SMALL |
| case 'i': |
| SET(AUTOINDENT); |
| break; |
| case 'k': |
| SET(CUT_TO_END); |
| break; |
| #endif |
| case 'l': |
| SET(NOFOLLOW_SYMLINKS); |
| break; |
| #if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION) |
| case 'm': |
| SET(USE_MOUSE); |
| break; |
| #endif |
| #ifndef DISABLE_OPERATINGDIR |
| case 'o': |
| operating_dir = mallocstrcpy(operating_dir, optarg); |
| break; |
| #endif |
| case 'p': |
| SET(PRESERVE); |
| #ifdef HAVE_GETOPT_LONG |
| if (!preserveopt) |
| do_preserve_msg(); |
| #endif |
| break; |
| #ifndef DISABLE_WRAPJUSTIFY |
| case 'r': |
| { |
| int i; |
| char *first_error; |
| |
| /* Using strtol() instead of atoi() lets us accept 0 |
| * while checking other errors. */ |
| i = (int)strtol(optarg, &first_error, 10); |
| if (errno == ERANGE || *optarg == '\0' || *first_error != '\0') |
| usage(); |
| else |
| wrap_at = i; |
| } |
| fill_flag_used = 1; |
| break; |
| #endif |
| #ifndef DISABLE_SPELLER |
| case 's': |
| alt_speller = mallocstrcpy(alt_speller, optarg); |
| break; |
| #endif |
| case 't': |
| SET(TEMP_OPT); |
| 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(); |
| } |
| } |
| |
| /* 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_WRAPPING |
| int wrap_at_cpy = wrap_at; |
| #endif |
| #ifndef DISABLE_JUSTIFY |
| char *quotestr_cpy = quotestr; |
| #endif |
| #ifndef DISABLE_SPELLER |
| char *alt_speller_cpy = alt_speller; |
| #endif |
| int tabsize_cpy = tabsize; |
| long flags_cpy = flags; |
| |
| #ifndef DISABLE_OPERATINGDIR |
| operating_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_WRAPPING |
| if (fill_flag_used) |
| wrap_at = wrap_at_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 > 0) |
| tabsize = tabsize_cpy; |
| flags |= flags_cpy; |
| } |
| #if defined(DISABLE_ROOTWRAP) && !defined(DISABLE_WRAPPING) |
| else if (geteuid() == 0) |
| SET(NO_WRAP); |
| #endif |
| #endif /* ENABLE_NANORC */ |
| |
| #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 (quotestr == NULL) |
| #ifdef HAVE_REGEX_H |
| quotestr = mallocstrcpy(NULL, "^([ \t]*[|>:}#])+"); |
| #else |
| quotestr = mallocstrcpy(NULL, "> "); |
| #endif |
| #endif /* !DISABLE_JUSTIFY */ |
| if (tabsize == -1) |
| tabsize = 8; |
| |
| /* Clear the filename we'll be using */ |
| filename = charalloc(1); |
| filename[0] = '\0'; |
| |
| /* If there's a +LINE flag, it is the first non-option argument. */ |
| if (0 < optind && optind < argc && argv[optind][0] == '+') { |
| startline = atoi(&argv[optind][1]); |
| optind++; |
| } |
| if (0 < optind && optind < argc) |
| filename = mallocstrcpy(filename, argv[optind]); |
| |
| /* See if there's a non-option in argv (first non-option is the |
| filename, if +LINE is not given) */ |
| if (argc > 1 && argc > optind) { |
| /* Look for the +line flag... */ |
| if (argv[optind][0] == '+') { |
| startline = atoi(&argv[optind][1]); |
| optind++; |
| if (argc > optind) |
| filename = mallocstrcpy(filename, argv[optind]); |
| } else |
| filename = mallocstrcpy(filename, argv[optind]); |
| } |
| |
| /* First back up the old settings so they can be restored, duh */ |
| tcgetattr(0, &oldterm); |
| |
| #ifdef _POSIX_VDISABLE |
| term = oldterm; |
| term.c_cc[VINTR] = _POSIX_VDISABLE; |
| term.c_cc[VQUIT] = _POSIX_VDISABLE; |
| term.c_lflag &= ~IEXTEN; |
| tcsetattr(0, TCSANOW, &term); |
| #endif |
| |
| /* now ncurses init stuff... */ |
| initscr(); |
| savetty(); |
| nonl(); |
| cbreak(); |
| noecho(); |
| |
| /* Set up some global variables */ |
| global_init(0); |
| shortcut_init(0); |
| signal_init(); |
| |
| #ifdef DEBUG |
| fprintf(stderr, _("Main: set up windows\n")); |
| #endif |
| |
| window_init(); |
| #if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION) |
| mouse_init(); |
| #endif |
| |
| if (!ISSET(ALT_KEYPAD)) { |
| keypad(edit, TRUE); |
| keypad(bottomwin, TRUE); |
| } |
| |
| #ifndef NANO_SMALL |
| history_init(); |
| #ifdef ENABLE_NANORC |
| if (!ISSET(NO_RCFILE) && ISSET(HISTORYLOG)) |
| load_history(); |
| #endif |
| #endif |
| |
| |
| |
| |
| #ifdef DEBUG |
| fprintf(stderr, _("Main: bottom win\n")); |
| #endif |
| /* Set up bottom of window */ |
| display_main_list(); |
| |
| #ifdef DEBUG |
| fprintf(stderr, _("Main: open file\n")); |
| #endif |
| |
| open_file(filename, 0, 1); |
| #ifdef ENABLE_MULTIBUFFER |
| /* If we're using multibuffers and more than one file is specified |
| on the command line, load them all and switch to the first one |
| afterward */ |
| if (ISSET(MULTIBUFFER) && optind + 1 < argc) { |
| for (optind++; optind < argc; optind++) { |
| add_open_file(1); |
| new_file(); |
| filename = mallocstrcpy(filename, argv[optind]); |
| open_file(filename, 0, 0); |
| load_file(0); |
| } |
| open_nextfile_void(); |
| } |
| #endif |
| |
| titlebar(NULL); |
| |
| if (startline > 0) |
| do_gotoline(startline, 0); |
| |
| /* Return here after a sigwinch */ |
| sigsetjmp(jmpbuf, 1); |
| |
| /* This variable should be initialized after the sigsetjmp(), so we |
| can't do Esc-Esc then quickly resize and muck things up. */ |
| modify_control_seq = 0; |
| |
| edit_refresh(); |
| reset_cursor(); |
| |
| while (1) { |
| int keyhandled = 0; /* Have we handled the keystroke yet? */ |
| int kbinput; /* Input from keyboard */ |
| |
| if (ISSET(CONSTUPDATE)) |
| do_cursorpos(1); |
| |
| #if !defined(DISABLE_BROWSER) || !defined(DISABLE_HELP) || (!defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION)) |
| currshortcut = main_list; |
| #endif |
| |
| #ifndef _POSIX_VDISABLE |
| /* We're going to have to do it the old way, i.e. on cygwin */ |
| raw(); |
| #endif |
| |
| kbinput = wgetch(edit); |
| #ifdef DEBUG |
| fprintf(stderr, _("AHA! %c (%d)\n"), kbinput, kbinput); |
| #endif |
| if (kbinput == 27) { /* Grab Alt-key stuff first */ |
| kbinput = wgetch(edit); |
| switch (kbinput) { |
| /* Alt-O, suddenly very important ;) */ |
| case 'O': |
| kbinput = wgetch(edit); |
| /* Shift or Ctrl + Arrows are Alt-O-[2,5,6]-[A,B,C,D] on some terms */ |
| if (kbinput == '2' || kbinput == '5' || kbinput == '6') |
| kbinput = wgetch(edit); |
| if ((kbinput <= 'D' && kbinput >= 'A') || |
| (kbinput <= 'd' && kbinput >= 'a')) |
| kbinput = abcd(kbinput); |
| else if (kbinput <= 'z' && kbinput >= 'j') |
| print_numlock_warning(); |
| else if (kbinput <= 'S' && kbinput >= 'P') |
| kbinput = KEY_F(kbinput - 79); |
| #ifdef DEBUG |
| else { |
| fprintf(stderr, _("I got Alt-O-%c! (%d)\n"), |
| kbinput, kbinput); |
| break; |
| } |
| #endif |
| break; |
| case 27: |
| /* If we get Alt-Alt, the next keystroke should be the same as a |
| control sequence */ |
| modify_control_seq = 1; |
| keyhandled = 1; |
| break; |
| case '[': |
| kbinput = wgetch(edit); |
| switch (kbinput) { |
| case '1': /* Alt-[-1-[0-5,7-9] = F1-F8 in X at least */ |
| kbinput = wgetch(edit); |
| if (kbinput >= '1' && kbinput <= '5') { |
| kbinput = KEY_F(kbinput - 48); |
| wgetch(edit); |
| } else if (kbinput >= '7' && kbinput <= '9') { |
| kbinput = KEY_F(kbinput - 49); |
| wgetch(edit); |
| } else if (kbinput == '~') |
| kbinput = KEY_HOME; |
| #ifdef DEBUG |
| else { |
| fprintf(stderr, _("I got Alt-[-1-%c! (%d)\n"), |
| kbinput, kbinput); |
| break; |
| } |
| #endif |
| break; |
| case '2': /* Alt-[-2-[0,1,3,4] = F9-F12 in many terms */ |
| kbinput = wgetch(edit); |
| switch (kbinput) { |
| case '0': |
| kbinput = KEY_F(9); |
| wgetch(edit); |
| break; |
| case '1': |
| kbinput = KEY_F(10); |
| wgetch(edit); |
| break; |
| case '3': |
| kbinput = KEY_F(11); |
| wgetch(edit); |
| break; |
| case '4': |
| kbinput = KEY_F(12); |
| wgetch(edit); |
| break; |
| case '~': |
| kbinput = NANO_INSERTFILE_KEY; |
| break; |
| #ifdef DEBUG |
| default: |
| fprintf(stderr, _("I got Alt-[-2-%c! (%d)\n"), |
| kbinput, kbinput); |
| break; |
| #endif |
| } |
| break; |
| case '3': /* Alt-[-3 = Delete? */ |
| kbinput = NANO_DELETE_KEY; |
| wgetch(edit); |
| break; |
| case '4': /* Alt-[-4 = End? */ |
| kbinput = NANO_END_KEY; |
| wgetch(edit); |
| break; |
| case '5': /* Alt-[-5 = Page Up */ |
| kbinput = KEY_PPAGE; |
| wgetch(edit); |
| break; |
| case 'V': /* Alt-[-V = Page Up in Hurd Console */ |
| case 'I': /* Alt-[-I = Page Up - FreeBSD Console */ |
| kbinput = KEY_PPAGE; |
| break; |
| case '6': /* Alt-[-6 = Page Down */ |
| kbinput = KEY_NPAGE; |
| wgetch(edit); |
| break; |
| case 'U': /* Alt-[-U = Page Down in Hurd Console */ |
| case 'G': /* Alt-[-G = Page Down - FreeBSD Console */ |
| kbinput = KEY_NPAGE; |
| break; |
| case '7': |
| kbinput = KEY_HOME; |
| wgetch(edit); |
| break; |
| case '8': |
| kbinput = KEY_END; |
| wgetch(edit); |
| break; |
| case '9': /* Alt-[-9 = Delete in Hurd Console */ |
| kbinput = KEY_DC; |
| break; |
| case '@': /* Alt-[-@ = Insert in Hurd Console */ |
| case 'L': /* Alt-[-L = Insert - FreeBSD Console */ |
| kbinput = NANO_INSERTFILE_KEY; |
| break; |
| case '[': /* Alt-[-[-[A-E], F1-F5 in Linux console */ |
| kbinput = wgetch(edit); |
| if (kbinput >= 'A' && kbinput <= 'E') |
| kbinput = KEY_F(kbinput - 64); |
| break; |
| case 'A': |
| case 'B': |
| case 'C': |
| case 'D': |
| case 'a': |
| case 'b': |
| case 'c': |
| case 'd': |
| kbinput = abcd(kbinput); |
| break; |
| case 'H': |
| kbinput = KEY_HOME; |
| break; |
| case 'F': |
| case 'Y': /* End Key in Hurd Console */ |
| kbinput = KEY_END; |
| break; |
| default: |
| #ifdef DEBUG |
| fprintf(stderr, _("I got Alt-[-%c! (%d)\n"), |
| kbinput, kbinput); |
| #endif |
| break; |
| } |
| break; |
| #ifdef ENABLE_MULTIBUFFER |
| case NANO_OPENPREV_KEY: |
| case NANO_OPENPREV_ALTKEY: |
| open_prevfile_void(); |
| keyhandled = 1; |
| break; |
| case NANO_OPENNEXT_KEY: |
| case NANO_OPENNEXT_ALTKEY: |
| open_nextfile_void(); |
| keyhandled = 1; |
| break; |
| #endif |
| default: |
| /* Check for the altkey defs.... */ |
| for (s = main_list; s != NULL; s = s->next) |
| if (kbinput == s->altval || (kbinput >= 'A' && |
| kbinput <= 'Z' && kbinput == s->altval - 32)) { |
| if (ISSET(VIEW_MODE) && !s->viewok) |
| print_view_warning(); |
| else |
| s->func(); |
| keyhandled = 1; |
| break; |
| } |
| #ifndef NANO_SMALL |
| /* And for toggle switches */ |
| for (t = toggles; t != NULL && !keyhandled; t = t->next) |
| if (kbinput == t->val || (t->val >= 'a' && |
| t->val <= 'z' && kbinput == t->val - 32)) { |
| do_toggle(t); |
| keyhandled = 1; |
| break; |
| } |
| #endif |
| #ifdef DEBUG |
| fprintf(stderr, _("I got Alt-%c! (%d)\n"), kbinput, |
| kbinput); |
| #endif |
| break; |
| } |
| } |
| /* Hack, make insert key do something useful, like insert file */ |
| else if (kbinput == KEY_IC) |
| kbinput = NANO_INSERTFILE_KEY; |
| |
| /* If modify_control_seq is set, we received an Alt-Alt |
| sequence before this, so we make this key a control sequence |
| by subtracting 32, 64, or 96, depending on its value. */ |
| if (!keyhandled && modify_control_seq) { |
| if (kbinput == ' ') |
| kbinput -= 32; |
| else if (kbinput >= 'A' && kbinput < 'a') |
| kbinput -= 64; |
| else if (kbinput >= 'a' && kbinput <= 'z') |
| kbinput -= 96; |
| |
| modify_control_seq = 0; |
| } |
| |
| /* Look through the main shortcut list to see if we've hit a |
| shortcut key */ |
| |
| #if !defined(DISABLE_BROWSER) || !defined (DISABLE_HELP) || (!defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION)) |
| for (s = currshortcut; s != NULL && !keyhandled; s = s->next) { |
| #else |
| for (s = main_list; s != NULL && !keyhandled; s = s->next) { |
| #endif |
| if (kbinput == s->val || |
| (s->misc1 && kbinput == s->misc1) || |
| (s->misc2 && kbinput == s->misc2)) { |
| if (ISSET(VIEW_MODE) && !s->viewok) |
| print_view_warning(); |
| else |
| s->func(); |
| keyhandled = 1; |
| /* Rarely, the value of s can change after s->func(), |
| leading to problems; get around this by breaking out |
| explicitly once we successfully handle a shortcut */ |
| break; |
| } |
| } |
| |
| #ifdef _POSIX_VDISABLE |
| /* Don't even think about changing this string */ |
| if (kbinput == 19) |
| statusbar(_("XOFF ignored, mumble mumble.")); |
| if (kbinput == 17) |
| statusbar(_("XON ignored, mumble mumble.")); |
| #endif |
| /* If we're in raw mode or using Alt-Alt-x, we have to catch |
| Control-S and Control-Q */ |
| if (kbinput == 17 || kbinput == 19) |
| keyhandled = 1; |
| |
| /* Catch ^Z by hand when triggered also |
| 407 == ^Z in Linux console when keypad() is used? */ |
| if (kbinput == 26 || kbinput == 407) { |
| if (ISSET(SUSPEND)) |
| do_suspend(0); |
| keyhandled = 1; |
| } |
| |
| /* Last gasp, stuff that's not in the main lists */ |
| if (!keyhandled) |
| switch (kbinput) { |
| #if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION) |
| case KEY_MOUSE: |
| do_mouse(); |
| break; |
| #endif |
| |
| case -1: /* Stuff that we don't want to do squat */ |
| case 0: /* Erg */ |
| case 29: /* Ctrl-] */ |
| case 410: /* Must ignore this, it's sent when we resize */ |
| #ifdef PDCURSES |
| case 541: /* ???? */ |
| case 542: /* Control and alt in Windows *shrug* */ |
| case 543: /* Right ctrl key */ |
| case 544: |
| case 545: /* Right alt key */ |
| #endif |
| |
| break; |
| default: |
| #ifdef DEBUG |
| fprintf(stderr, _("I got %c (%d)!\n"), kbinput, kbinput); |
| #endif |
| /* We no longer stop unhandled sequences so that people with |
| odd character sets can type... */ |
| |
| if (ISSET(VIEW_MODE)) |
| print_view_warning(); |
| else |
| do_char(kbinput); |
| } |
| |
| reset_cursor(); |
| wrefresh(edit); |
| } |
| assert(0); |
| } |