| /* $Id$ */ |
| /************************************************************************** |
| * nano.c * |
| * * |
| * Copyright (C) 1999 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 1, 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 <stdio.h> |
| #include <stdlib.h> |
| #include <stdarg.h> |
| #include <signal.h> |
| #include <unistd.h> |
| #include <string.h> |
| #include <fcntl.h> |
| #include <sys/stat.h> |
| #include <sys/ioctl.h> |
| #include <sys/param.h> |
| #include <errno.h> |
| #include <ctype.h> |
| #include <locale.h> |
| #include <limits.h> |
| #include <assert.h> |
| |
| #include "config.h" |
| #include "proto.h" |
| #include "nano.h" |
| |
| #ifndef NANO_SMALL |
| #include <libintl.h> |
| #define _(string) gettext(string) |
| #else |
| #define _(string) (string) |
| #endif |
| |
| #ifdef HAVE_TERMIOS_H |
| #include <termios.h> |
| #endif |
| |
| #ifdef HAVE_TERMIO_H |
| #include <termio.h> |
| #endif |
| |
| #ifdef HAVE_GETOPT_H |
| #include <getopt.h> |
| #endif |
| |
| /* Former globals, now static */ |
| char *last_search = "\0"; /* Last string we searched for */ |
| char *last_replace = "\0"; /* Last replacement string */ |
| int fill = 0; /* Fill - where to wrap lines, basically */ |
| static char *alt_speller; /* Alternative spell command */ |
| struct termios oldterm; /* The user's original term settings */ |
| static char *help_text_init = ""; |
| /* Initial message, not including shortcuts */ |
| |
| /* What we do when we're all set to exit */ |
| RETSIGTYPE finish(int sigage) |
| { |
| 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); |
| |
| exit(sigage); |
| } |
| |
| /* Die (gracefully?) */ |
| void die(char *msg, ...) |
| { |
| va_list ap; |
| |
| va_start(ap, msg); |
| vfprintf(stderr, msg, ap); |
| va_end(ap); |
| |
| /* if we can't save we have REAL bad problems, |
| * but we might as well TRY. */ |
| if(filename[0] == '\0') { |
| write_file("nano.save", 0); |
| } else { |
| char buf[BUFSIZ]; |
| strncpy(buf,filename,BUFSIZ); |
| strncat(buf,".save",BUFSIZ - strlen(buf)); |
| write_file(buf, 0); |
| } |
| /* Restore the old term settings */ |
| tcsetattr(0, TCSANOW, &oldterm); |
| |
| clear(); |
| refresh(); |
| resetty(); |
| endwin(); |
| |
| fprintf(stderr, msg); |
| fprintf(stderr, _("\nBuffer written to 'nano.save'\n")); |
| |
| exit(1); /* We have a problem: exit w/ errorlevel(1) */ |
| } |
| |
| void print_view_warning(void) |
| { |
| statusbar(_("Key illegal in VIEW mode")); |
| } |
| |
| /* Initialize global variables - no better way for now */ |
| void global_init(void) |
| { |
| int i; |
| |
| center_x = COLS / 2; |
| center_y = LINES / 2; |
| current_x = 0; |
| current_y = 0; |
| editwinrows = LINES - 5 + no_help(); |
| fileage = NULL; |
| cutbuffer = NULL; |
| current = NULL; |
| edittop = NULL; |
| editbot = NULL; |
| totlines = 0; |
| placewewant = 0; |
| if (!fill) |
| fill = COLS - 8; |
| hblank = nmalloc(COLS + 1); |
| |
| /* Thanks BG for this bit... */ |
| for (i = 0; i <= COLS - 1; i++) |
| hblank[i] = ' '; |
| hblank[i] = 0; |
| last_search = nmalloc(132); |
| last_replace = nmalloc(132); |
| answer = nmalloc(132); |
| |
| } |
| |
| void init_help_msg(void) |
| { |
| |
| #ifndef NANO_SMALL |
| |
| help_text_init = |
| _(" 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. Alt-key " |
| "sequences are notated with an at (@) symbol. The following " |
| "keystrokes are available in the main editor window. " |
| "Optional keys are shown in parentheses:\n\n"); |
| #endif |
| |
| } |
| |
| /* Make a copy of a node to a pointer (space will be malloc()ed) */ |
| filestruct *copy_node(filestruct * src) |
| { |
| filestruct *dst; |
| |
| dst = nmalloc(sizeof(filestruct)); |
| dst->data = nmalloc(strlen(src->data) + 1); |
| |
| dst->next = src->next; |
| dst->prev = src->prev; |
| |
| strcpy(dst->data, src->data); |
| dst->lineno = src->lineno; |
| |
| return dst; |
| } |
| |
| /* Unlink a node from the rest of the struct */ |
| void unlink_node(filestruct * fileptr) |
| { |
| if (fileptr->prev != NULL) |
| fileptr->prev->next = fileptr->next; |
| |
| if (fileptr->next != NULL) |
| fileptr->next->prev = fileptr->prev; |
| } |
| |
| void delete_node(filestruct * fileptr) |
| { |
| if (fileptr->data != NULL) |
| free(fileptr->data); |
| free(fileptr); |
| } |
| |
| /* Okay, now let's duplicate a whole struct! */ |
| filestruct *copy_filestruct(filestruct * src) |
| { |
| filestruct *dst, *tmp, *head, *prev; |
| |
| head = copy_node(src); |
| dst = head; /* Else we barf on copying just one line */ |
| head->prev = NULL; |
| tmp = src->next; |
| prev = head; |
| |
| while (tmp != NULL) { |
| dst = copy_node(tmp); |
| dst->prev = prev; |
| prev->next = dst; |
| |
| prev = dst; |
| tmp = tmp->next; |
| } |
| |
| dst->next = NULL; |
| return head; |
| } |
| |
| /* Free() a single node */ |
| int free_node(filestruct * src) |
| { |
| if (src == NULL) |
| return 0; |
| |
| if (src->next != NULL) |
| free(src->data); |
| free(src); |
| return 1; |
| } |
| |
| int free_filestruct(filestruct * src) |
| { |
| filestruct *fileptr = src; |
| |
| if (src == NULL) |
| return 0; |
| |
| while (fileptr->next != NULL) { |
| fileptr = fileptr->next; |
| free_node(fileptr->prev); |
| |
| #ifdef DEBUG |
| fprintf(stderr, _("free_node(): free'd a node, YAY!\n")); |
| #endif |
| } |
| free_node(fileptr); |
| #ifdef DEBUG |
| fprintf(stderr, _("free_node(): free'd last node.\n")); |
| #endif |
| |
| return 1; |
| } |
| |
| int renumber_all(void) |
| { |
| filestruct *temp; |
| long i = 1; |
| |
| for (temp = fileage; temp != NULL; temp = temp->next) { |
| temp->lineno = i++; |
| } |
| |
| return 0; |
| } |
| |
| int renumber(filestruct * fileptr) |
| { |
| filestruct *temp; |
| |
| if (fileptr == NULL || fileptr->prev == NULL || fileptr == fileage) { |
| renumber_all(); |
| return 0; |
| } |
| for (temp = fileptr; temp != NULL; temp = temp->next) { |
| temp->lineno = temp->prev->lineno + 1; |
| } |
| |
| return 0; |
| } |
| |
| /* Fix the memory allocation for a string */ |
| void align(char **strp) |
| { |
| /* There was a serious bug here: the new address was never |
| stored anywhere... */ |
| |
| *strp = nrealloc(*strp, strlen(*strp) + 1); |
| } |
| |
| /* Null a string at a certain index and align it */ |
| void null_at(char *data, int index) |
| { |
| data[index] = 0; |
| align(&data); |
| } |
| |
| void usage(void) |
| { |
| #ifdef HAVE_GETOPT_LONG |
| printf(_("Usage: nano [GNU long option] [option] +LINE <file>\n\n")); |
| printf(_("Option Long option Meaning\n")); |
| printf(_ |
| (" -T --tabsize=[num] Set width of a tab to num\n")); |
| #ifdef _POSIX_VERSION |
| printf(_ |
| (" -R --regexp Use regular expressions for search\n")); |
| #endif |
| printf |
| (_ |
| (" -V --version Print version information and exit\n")); |
| printf(_ |
| (" -c --const Constantly show cursor position\n")); |
| printf(_ |
| (" -h --help Show this message\n")); |
| #ifndef NANO_SMALL |
| printf(_ |
| (" -k --cut Let ^K cut from cursor to end of line\n")); |
| #endif |
| printf(_ |
| (" -i --autoindent Automatically indent new lines\n")); |
| printf(_ |
| (" -l --nofollow Don't follow symbolic links, overwrite.\n")); |
| #ifndef NANO_SMALL |
| #ifdef NCURSES_MOUSE_VERSION |
| printf(_(" -m --mouse Enable mouse\n")); |
| #endif |
| #endif |
| printf |
| (_ |
| (" -r [#cols] --fill=[#cols] Set fill cols to (wrap lines at) #cols\n")); |
| printf(_ |
| (" -p --pico Make bottom 2 lines more Pico-like\n")); |
| printf(_ |
| (" -s [prog] --speller=[prog] Enable alternate speller\n")); |
| printf(_ |
| (" -t --tempfile Auto save on exit, don't prompt\n")); |
| printf(_ |
| (" -v --view View (read only) mode\n")); |
| printf(_ |
| (" -w --nowrap Don't wrap long lines\n")); |
| printf(_ |
| (" -x --nohelp Don't show help window\n")); |
| printf(_ |
| (" -z --suspend Enable suspend\n")); |
| printf(_ |
| (" +LINE Start at line number LINE\n")); |
| #else |
| printf(_("Usage: nano [option] +LINE <file>\n\n")); |
| printf(_("Option Meaning\n")); |
| printf(_(" -T [num] Set width of a tab to num\n")); |
| printf(_(" -R Use regular expressions for search\n")); |
| printf(_(" -V Print version information and exit\n")); |
| printf(_(" -c Constantly show cursor position\n")); |
| printf(_(" -h Show this message\n")); |
| #ifndef NANO_SMALL |
| printf(_(" -k Let ^K cut from cursor to end of line\n")); |
| #endif |
| printf(_(" -i Automatically indent new lines\n")); |
| printf(_ |
| (" -l Don't follow symbolic links, overwrite.\n")); |
| #ifndef NANO_SMALL |
| #ifdef NCURSES_MOUSE_VERSION |
| printf(_(" -m Enable mouse\n")); |
| #endif |
| #endif |
| printf(_ |
| (" -r [#cols] Set fill cols to (wrap lines at) #cols\n")); |
| printf(_(" -s [prog] Enable alternate speller\n")); |
| printf(_(" -p Make bottom 2 lines more Pico-like\n")); |
| printf(_(" -t Auto save on exit, don't prompt\n")); |
| printf(_(" -v View (read only) mode\n")); |
| printf(_(" -w Don't wrap long lines\n")); |
| printf(_(" -x Don't show help window\n")); |
| printf(_(" -z Enable suspend\n")); |
| printf(_(" +LINE Start at line number LINE\n")); |
| #endif |
| exit(0); |
| } |
| |
| void version(void) |
| { |
| printf(_(" nano version %s by Chris Allegretta (compiled %s, %s)\n"), |
| VERSION, __TIME__, __DATE__); |
| printf(_(" Email: nano@asty.org Web: http://www.asty.org/nano\n")); |
| } |
| |
| filestruct *make_new_node(filestruct * prevnode) |
| { |
| filestruct *newnode; |
| |
| newnode = nmalloc(sizeof(filestruct)); |
| newnode->data = NULL; |
| |
| newnode->prev = prevnode; |
| newnode->next = NULL; |
| |
| if (prevnode != NULL) |
| newnode->lineno = prevnode->lineno + 1; |
| |
| return newnode; |
| } |
| |
| /* Splice a node into an existing filestruct */ |
| void splice_node(filestruct *begin, filestruct *new, filestruct *end) |
| { |
| new->next = end; |
| new->prev = begin; |
| begin->next = new; |
| if (end != NULL) |
| end->prev = new; |
| } |
| |
| int do_mark() |
| { |
| #ifdef NANO_SMALL |
| nano_small_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); |
| mark_beginbuf = NULL; |
| mark_beginx = 0; |
| |
| edit_refresh(); |
| } |
| #endif |
| return 1; |
| } |
| |
| int no_help(void) |
| { |
| if ISSET |
| (NO_HELP) |
| return 2; |
| else |
| return 0; |
| } |
| |
| void nano_small_msg(void) |
| { |
| statusbar("Sorry, this function not available with nano-tiny option"); |
| } |
| |
| /* The user typed a printable character; add it to the edit buffer */ |
| void do_char(char ch) |
| { |
| /* 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, strlen(current->data) + 2); |
| memmove(¤t->data[current_x + 1], |
| ¤t->data[current_x], |
| strlen(current->data) - current_x + 1); |
| current->data[current_x] = ch; |
| do_right(); |
| |
| if (!ISSET(NO_WRAP) && (ch != '\t')) |
| check_wrap(current, ch); |
| set_modified(); |
| check_statblank(); |
| UNSET(KEEP_CUTBUFFER); |
| totsize++; |
| |
| } |
| |
| /* Someone hits return *gasp!* */ |
| int do_enter(filestruct * inptr) |
| { |
| filestruct *new; |
| char *tmp, *spc; |
| int extra = 0; |
| |
| new = make_new_node(inptr); |
| tmp = ¤t->data[current_x]; |
| current_x = 0; |
| |
| /* Do auto-indenting, like the neolithic Turbo Pascal editor */ |
| if (ISSET(AUTOINDENT)) { |
| spc = current->data; |
| if (spc) { |
| while ((*spc == ' ') || (*spc == '\t')) { |
| extra++; |
| spc++; |
| current_x++; |
| } |
| new->data = nmalloc(strlen(tmp) + extra + 1); |
| strncpy(new->data, current->data, extra); |
| strcpy(&new->data[extra], tmp); |
| } |
| } else { |
| new->data = nmalloc(strlen(tmp) + 1); |
| strcpy(new->data, tmp); |
| } |
| *tmp = 0; |
| |
| if (inptr->next == NULL) { |
| filebot = new; |
| editbot = new; |
| } |
| splice_node(inptr, new, inptr->next); |
| |
| totsize++; |
| renumber(current); |
| current = new; |
| 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 forcably move the cursor. |
| * -> otherwise, we want simply to redraw the screen and update |
| * where we think the cursor is. |
| */ |
| if (current_y == editwinrows - 1) { |
| edit_update(current, CENTER); |
| reset_cursor(); |
| } else { |
| current_y++; |
| edit_refresh(); |
| update_cursor(); |
| } |
| |
| totlines++; |
| set_modified(); |
| |
| placewewant = xplustabs(); |
| return 1; |
| } |
| |
| int do_enter_void(void) |
| { |
| return do_enter(current); |
| } |
| |
| void do_next_word(void) |
| { |
| filestruct *fileptr; |
| int i; |
| |
| if (current == NULL) |
| return; |
| |
| i = current_x; |
| for (fileptr = current; fileptr != NULL; fileptr = fileptr->next) { |
| if (fileptr == current) { |
| while (isalnum((int) fileptr->data[i]) |
| && fileptr->data[i] != 0) |
| i++; |
| |
| if (fileptr->data[i] == 0) { |
| i = 0; |
| continue; |
| } |
| } |
| while (!isalnum((int) fileptr->data[i]) && fileptr->data[i] != 0) |
| i++; |
| |
| if (fileptr->data[i] != 0) |
| break; |
| |
| i = 0; |
| } |
| if (fileptr == NULL) |
| current = filebot; |
| else |
| current = fileptr; |
| |
| current_x = i; |
| placewewant = xplustabs(); |
| if (current->lineno >= editbot->lineno) |
| edit_update(current, CENTER); |
| |
| } |
| |
| void do_wrap(filestruct * inptr, char input_char) |
| { |
| int i = 0; /* Index into ->data for line. */ |
| int i_tabs = 0; /* Screen position of ->data[i]. */ |
| int last_word_end = -1; /* Location of end of last word found. */ |
| int current_word_start = -1; /* Location of start of current word. */ |
| int current_word_start_t = -1; /* Location of start of current word screen position. */ |
| int current_word_end = -1; /* Location of end of current word */ |
| int current_word_end_t = -1; /* Location of end of current word screen position. */ |
| int len = strlen(inptr->data); |
| |
| int down = 0; |
| int right = 0; |
| struct filestruct *temp = NULL; |
| |
| assert(strlenpt(inptr->data) > fill); |
| |
| for (i = 0, i_tabs = 0; i < len; i++, i_tabs++) { |
| if (!isspace(inptr->data[i])) { |
| last_word_end = current_word_end; |
| |
| current_word_start = i; |
| current_word_start_t = i_tabs; |
| |
| while (!isspace(inptr->data[i]) && inptr->data[i]) { |
| i++; |
| i_tabs++; |
| if (inptr->data[i] < 32) |
| i_tabs++; |
| } |
| |
| if (inptr->data[i]) { |
| current_word_end = i; |
| current_word_end_t = i_tabs; |
| } else { |
| current_word_end = i - 1; |
| current_word_end_t = i_tabs - 1; |
| } |
| } |
| |
| if (inptr->data[i] == NANO_CONTROL_I) { |
| if (i_tabs % tabsize != 0); |
| i_tabs += tabsize - (i_tabs % tabsize); |
| } |
| |
| if (current_word_end_t > fill) |
| break; |
| } |
| |
| /* There are a few (ever changing) cases of what the line could look like. |
| * 1) only one word on the line before wrap point. |
| * a) one word takes up the whole line with no starting spaces. |
| * - do nothing and return. |
| * b) cursor is on word or before word at wrap point and there are spaces at beginning. |
| * - word starts new line. |
| * - keep white space on original line up to the cursor. |
| * *) cursor is after word at wrap point |
| * - either it's all white space after word, and this routine isn't called. |
| * - or we are actually in case 2 (2 words). |
| * 2) Two or more words on the line before wrap point. |
| * a) cursor is at a word or space before wrap point |
| * - word at wrap point starts a new line. |
| * - white space at end of original line is cleared, unless |
| * it is all spaces between previous word and next word which appears after fill. |
| * b) cursor is at the word at the wrap point. |
| * - word at wrap point starts a new line. |
| * 1. pressed a space and at first character of wrap point word. |
| * - white space on original line is kept to where cursor was. |
| * 2. pressed non space (or space elsewhere). |
| * - white space at end of original line is cleared. |
| * c) cursor is past the word at the wrap point. |
| * - word at wrap point starts a new line. |
| * - white space at end of original line is cleared |
| */ |
| |
| temp = nmalloc(sizeof(filestruct)); |
| |
| /* Category 1a: one word taking up the whole line with no beginning spaces. */ |
| if ((last_word_end == -1) && (!isspace(inptr->data[0]))) { |
| for (i = current_word_end; i < len; i++) { |
| if (!isspace(inptr->data[i]) && i < len) { |
| current_word_start = i; |
| while (!isspace(inptr->data[i]) && (i < len)) { |
| i++; |
| } |
| last_word_end = current_word_end; |
| current_word_end = i; |
| break; |
| } |
| } |
| |
| if (last_word_end == -1) { |
| free(temp); |
| return; |
| } |
| if (current_x >= last_word_end) { |
| right = (current_x - current_word_start) + 1; |
| current_x = last_word_end; |
| down = 1; |
| } |
| |
| temp->data = nmalloc(strlen(&inptr->data[current_word_start]) + 1); |
| strcpy(temp->data, &inptr->data[current_word_start]); |
| inptr->data = nrealloc(inptr->data, last_word_end + 2); |
| inptr->data[last_word_end + 1] = 0; |
| } else |
| /* Category 1b: one word on the line and word not taking up whole line |
| (i.e. there are spaces at the beginning of the line) */ |
| if (last_word_end == -1) { |
| temp->data = nmalloc(strlen(&inptr->data[current_word_start]) + 1); |
| strcpy(temp->data, &inptr->data[current_word_start]); |
| |
| /* Inside word, remove it from original, and move cursor to right spot. */ |
| if (current_x >= current_word_start) { |
| right = current_x - current_word_start; |
| current_x = 0; |
| down = 1; |
| } |
| |
| null_at(inptr->data, current_x); |
| |
| if (ISSET(MARK_ISSET) && (mark_beginbuf == inptr)) { |
| mark_beginbuf = temp; |
| mark_beginx = 0; |
| } |
| } |
| |
| /* Category 2: two or more words on the line. */ |
| else { |
| |
| /* Case 2a: cursor before word at wrap point. */ |
| if (current_x < current_word_start) { |
| temp->data = |
| nmalloc(strlen(&inptr->data[current_word_start]) + 1); |
| strcpy(temp->data, &inptr->data[current_word_start]); |
| |
| if (!isspace(input_char)) { |
| i = current_word_start - 1; |
| while (isspace(inptr->data[i])) { |
| i--; |
| assert(i >= 0); |
| } |
| } else if (current_x <= last_word_end) |
| i = last_word_end - 1; |
| else |
| i = current_x; |
| |
| inptr->data = nrealloc(inptr->data, i + 2); |
| inptr->data[i + 1] = 0; |
| } |
| |
| |
| /* Case 2b: cursor at word at wrap point. */ |
| else if ((current_x >= current_word_start) |
| && (current_x <= (current_word_end + 1))) { |
| temp->data = |
| nmalloc(strlen(&inptr->data[current_word_start]) + 1); |
| strcpy(temp->data, &inptr->data[current_word_start]); |
| |
| down = 1; |
| |
| right = current_x - current_word_start; |
| i = current_word_start - 1; |
| if (isspace(input_char) && (current_x == current_word_start)) { |
| current_x = current_word_start; |
| |
| null_at(inptr->data, current_word_start); |
| } else { |
| |
| while (isspace(inptr->data[i])) { |
| i--; |
| assert(i >= 0); |
| } |
| inptr->data = nrealloc(inptr->data, i + 2); |
| inptr->data[i + 1] = 0; |
| } |
| } |
| |
| |
| /* Case 2c: cursor past word at wrap point. */ |
| else { |
| temp->data = |
| nmalloc(strlen(&inptr->data[current_word_start]) + 1); |
| strcpy(temp->data, &inptr->data[current_word_start]); |
| |
| down = 1; |
| right = current_x - current_word_start; |
| |
| current_x = current_word_start; |
| i = current_word_start - 1; |
| |
| while (isspace(inptr->data[i])) { |
| i--; |
| assert(i >= 0); |
| inptr->data = nrealloc(inptr->data, i + 2); |
| inptr->data[i + 1] = 0; |
| } |
| } |
| } |
| |
| /* We pre-pend wrapped part to next line. */ |
| if (ISSET(SAMELINEWRAP) && inptr->next) { |
| /* Plus one for the space which concatenates the two lines together plus 1 for \0. */ |
| char *p = |
| nmalloc(strlen(temp->data) + strlen(inptr->next->data) + 2); |
| int old_x = current_x, old_y = current_y; |
| |
| strcpy(p, temp->data); |
| strcat(p, " "); |
| strcat(p, inptr->next->data); |
| |
| free(inptr->next->data); |
| inptr->next->data = p; |
| |
| free(temp->data); |
| free(temp); |
| |
| |
| /* The next line line may need to be wrapped as well. */ |
| current_y = old_y + 1; |
| current_x = strlen(inptr->next->data); |
| while (current_x >= 0) { |
| if (isspace(inptr->next->data[current_x]) |
| && (current_x < fill)) break; |
| current_x--; |
| } |
| if (current_x >= 0) |
| check_wrap(inptr->next, ' '); |
| |
| current_x = old_x; |
| current_y = old_y; |
| } |
| /* Else we start a new line. */ |
| else { |
| temp->prev = inptr; |
| temp->next = inptr->next; |
| |
| if (inptr->next) |
| inptr->next->prev = temp; |
| inptr->next = temp; |
| |
| if (!temp->next) |
| filebot = temp; |
| |
| SET(SAMELINEWRAP); |
| } |
| |
| |
| totlines++; |
| /* Everything about it makes me want this line here but it causes |
| * totsize to be high by one for some reason. Sigh. (Rob) */ |
| /* totsize++; */ |
| |
| renumber(inptr); |
| edit_update(edittop, TOP); |
| |
| |
| /* Move the cursor to the new line if appropriate. */ |
| if (down) { |
| do_right(); |
| } |
| |
| /* Move the cursor to the correct spot in the line if appropriate. */ |
| while (right--) { |
| do_right(); |
| } |
| |
| edit_update(edittop, TOP); |
| reset_cursor(); |
| edit_refresh(); |
| } |
| |
| /* Check to see if we've just caused the line to wrap to a new line */ |
| void check_wrap(filestruct * inptr, char ch) |
| { |
| int len = strlenpt(inptr->data); |
| #ifdef DEBUG |
| fprintf(stderr, _("check_wrap called with inptr->data=\"%s\"\n"), |
| inptr->data); |
| #endif |
| |
| if (len <= fill) |
| return; |
| else { |
| int i = actual_x(inptr, fill); |
| |
| /* Do not wrap if there are no words on or after wrap point. */ |
| int char_found = 0; |
| |
| while (isspace(inptr->data[i]) && inptr->data[i]) |
| i++; |
| |
| if (!inptr->data[i]) |
| return; |
| |
| /* String must be at least 1 character long. */ |
| for (i = strlen(inptr->data) - 1; i >= 0; i--) { |
| if (isspace(inptr->data[i])) { |
| if (!char_found) |
| continue; |
| char_found = 2; /* 2 for yes do wrap. */ |
| break; |
| } else |
| char_found = 1; /* 1 for yes found a word, but must check further. */ |
| } |
| |
| if (char_found == 2) |
| do_wrap(inptr, ch); |
| } |
| } |
| |
| /* Stuff we do when we abort from programs and want to clean up the |
| * screen. This doesnt do much right now. |
| */ |
| void do_early_abort(void) |
| { |
| blank_statusbar_refresh(); |
| } |
| |
| int do_backspace(void) |
| { |
| filestruct *previous, *tmp; |
| |
| if (current_x != 0) { |
| /* 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); |
| do_left(); |
| } else { |
| if (current == fileage) |
| return 0; /* Can't delete past top of file */ |
| |
| previous = current->prev; |
| current_x = strlen(previous->data); |
| previous->data = nrealloc(previous->data, |
| strlen(previous->data) + |
| strlen(current->data) + 1); |
| strcat(previous->data, current->data); |
| |
| tmp = current; |
| unlink_node(current); |
| delete_node(current); |
| if (current == edittop) { |
| if (previous->next) |
| current = previous->next; |
| else |
| current = previous; |
| page_up_center(); |
| } else { |
| if (previous->next) |
| current = previous->next; |
| else |
| current = previous; |
| update_line(current, current_x); |
| } |
| |
| /* 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 (strcmp(current->data, "")) { |
| new_magicline(); |
| fix_editbot(); |
| totsize++; |
| } |
| } |
| |
| current = previous; |
| renumber(current); |
| previous_line(); |
| totlines--; |
| #ifdef DEBUG |
| fprintf(stderr, _("After, data = \"%s\"\n"), current->data); |
| #endif |
| |
| } |
| |
| totsize--; |
| set_modified(); |
| UNSET(KEEP_CUTBUFFER); |
| edit_refresh(); |
| return 1; |
| } |
| |
| int do_delete(void) |
| { |
| filestruct *foo; |
| |
| 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); |
| |
| } else if (current->next != NULL) { |
| 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); |
| update_line(current, current_x); |
| |
| /* Please see the comment in do_basckspace if you don't understand |
| this test */ |
| if (current == filebot && strcmp(current->data, "")) |
| { |
| new_magicline(); |
| fix_editbot(); |
| totsize++; |
| } |
| renumber(current); |
| totlines--; |
| } else |
| return 0; |
| |
| totsize--; |
| set_modified(); |
| UNSET(KEEP_CUTBUFFER); |
| edit_refresh(); |
| return 1; |
| } |
| |
| void wrap_reset(void) |
| { |
| UNSET(SAMELINEWRAP); |
| } |
| |
| /* Stuff we want to do when we exit the spell program one of its many ways */ |
| void exit_spell(char *tmpfilename, char *foo) |
| { |
| free(foo); |
| |
| if (remove(tmpfilename) == -1) |
| statusbar(_("Error deleting tempfile, ack!")); |
| display_main_list(); |
| } |
| |
| /* |
| * This is Chris' very ugly spell function. Someone please make this |
| * better =-) |
| */ |
| int do_spell(void) |
| { |
| #ifdef NANO_SMALL |
| nano_small_msg(); |
| return 1; |
| #else |
| char *temp, *foo; |
| int i, size; |
| |
| if ((temp = tempnam(0, "nano.")) == NULL) { |
| statusbar(_("Could not create a temporary filename: %s"), |
| strerror(errno)); |
| return 0; |
| } |
| if (write_file(temp, 1) == -1) |
| return 0; |
| |
| if (alt_speller) { |
| size = strlen(temp) + strlen(alt_speller) + 2; |
| foo = nmalloc(size); |
| snprintf(foo, size, "%s %s", alt_speller, temp); |
| } else { |
| |
| /* For now, we only try ispell because we're not capable of |
| handling the normal spell program (yet...) */ |
| size = strlen(temp) + 8; |
| foo = nmalloc(size); |
| snprintf(foo, size, "ispell %s", temp); |
| } |
| |
| endwin(); |
| if (alt_speller) { |
| if ((i = system(foo)) == -1 || i == 32512) { |
| statusbar(_("Could not invoke spell program \"%s\""), |
| alt_speller); |
| exit_spell(temp, foo); |
| return 0; |
| } |
| } else if ((i = system(foo)) == -1 || i == 32512) { /* Why 32512? I dont know! */ |
| statusbar(_("Could not invoke \"ispell\"")); |
| exit_spell(temp, foo); |
| return 0; |
| } |
| /* initscr(); */ |
| refresh(); |
| |
| free_filestruct(fileage); |
| global_init(); |
| open_file(temp, 0, 1); |
| edit_update(fileage, CENTER); |
| set_modified(); |
| exit_spell(temp, foo); |
| statusbar(_("Finished checking spelling")); |
| return 1; |
| #endif |
| } |
| |
| int do_exit(void) |
| { |
| int i; |
| |
| if (!ISSET(MODIFIED)) |
| 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(1) > 0) |
| finish(0); |
| } else if (i == 0) |
| finish(0); |
| else |
| statusbar(_("Cancelled")); |
| |
| display_main_list(); |
| return 1; |
| } |
| |
| #ifndef NANO_SMALL |
| #ifdef NCURSES_MOUSE_VERSION |
| void do_mouse(void) |
| { |
| MEVENT mevent; |
| |
| if (getmouse(&mevent) == ERR) |
| return; |
| |
| /* If mouse not in edit window, return (add help selection later). */ |
| if (!wenclose(edit, mevent.y, mevent.x)) |
| return; |
| |
| /* Subtract out size of topwin. Perhaps we need a constant somewhere? */ |
| mevent.y -= 2; |
| |
| /* Selecting where the cursor is sets the mark. |
| * Selecting beyond the line length with the cursor at the end of the |
| * line sets the mark as well. |
| */ |
| if ((mevent.y == current_y) && |
| ((mevent.x == current_x) || (current_x == strlen(current->data) |
| && (mevent.x > |
| strlen(current->data))))) { |
| if (ISSET(VIEW_MODE)) { |
| print_view_warning(); |
| return; |
| } |
| do_mark(); |
| } else if (mevent.y > current_y) { |
| while (mevent.y > current_y) { |
| if (current->next != NULL) |
| current = current->next; |
| else |
| break; |
| current_y++; |
| } |
| } else if (mevent.y < current_y) { |
| while (mevent.y < current_y) { |
| if (current->prev != NULL) |
| current = current->prev; |
| else |
| break; |
| current_y--; |
| } |
| } |
| current_x = mevent.x; |
| if (current_x > strlen(current->data)) |
| current_x = strlen(current->data); |
| |
| update_cursor(); |
| edit_refresh(); |
| |
| } |
| #endif |
| #endif |
| |
| /* Handler for SIGHUP */ |
| RETSIGTYPE handle_hup(int signal) |
| { |
| write_file("nano.save", 0); |
| finish(1); |
| } |
| |
| |
| void handle_sigwinch(int s) |
| { |
| #ifndef NANO_SMALL |
| char *tty = NULL; |
| int fd = 0; |
| int result = 0; |
| int i = 0; |
| struct winsize win; |
| |
| tty = ttyname(0); |
| if (!tty) |
| return; |
| fd = open(tty, O_RDWR); |
| if (fd == -1) |
| return; |
| result = ioctl(fd, TIOCGWINSZ, &win); |
| if (result == -1) |
| return; |
| |
| |
| COLS = win.ws_col; |
| LINES = win.ws_row; |
| |
| center_x = COLS / 2; |
| center_y = LINES / 2; |
| editwinrows = LINES - 5 + no_help(); |
| fill = COLS - 8; |
| |
| free(hblank); |
| hblank = nmalloc(COLS + 1); |
| |
| for (i = 0; i <= COLS - 1; i++) |
| hblank[i] = ' '; |
| hblank[i] = 0; |
| |
| #ifdef HAVE_NCURSES_H |
| 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_NCURSES_H */ |
| |
| fix_editbot(); |
| |
| if (current_y > editwinrows - 1) { |
| edit_update(editbot, CENTER); |
| } |
| erase(); |
| |
| /* Do these b/c width may have changed... */ |
| refresh(); |
| titlebar(); |
| edit_refresh(); |
| display_main_list(); |
| total_refresh(); |
| #endif |
| } |
| |
| int do_tab(void) |
| { |
| do_char('\t'); |
| return 1; |
| } |
| |
| #ifndef NANO_SMALL |
| int empty_line(const char *data) |
| { |
| while (*data) { |
| if (!isspace(*data)) |
| return 0; |
| |
| data++; |
| } |
| |
| return 1; |
| } |
| |
| int no_spaces(const char *data) |
| { |
| while (*data) { |
| if (isspace(*data)) |
| return 0; |
| |
| data++; |
| } |
| |
| return 1; |
| } |
| |
| void justify_format(char *data) |
| { |
| int i = 0; |
| int len = strlen(data); |
| |
| /* Skip first character regardless and leading whitespace. */ |
| for (i = 1; i < len; i++) { |
| if (!isspace(data[i])) |
| break; |
| } |
| |
| i++; /* (i) is now at least 2. */ |
| |
| /* No double spaces allowed unless following a period. Tabs -> space. No double tabs. */ |
| for (; i < len; i++) { |
| if (isspace(data[i]) && isspace(data[i - 1]) |
| && (data[i - 2] != '.')) { |
| memmove(data + i, data + i + 1, len - i); |
| len--; |
| i--; |
| } |
| } |
| } |
| #endif |
| |
| int do_justify(void) |
| { |
| #ifndef NANO_SMALL |
| int slen = 0; /* length of combined lines on one line. */ |
| int initial_y; |
| filestruct *initial = NULL; |
| |
| if (empty_line(current->data)) { |
| /* Justify starting at first non-empty line. */ |
| do { |
| if (!current->next) |
| return 1; |
| |
| current = current->next; |
| current_y++; |
| } |
| while (empty_line(current->data)); |
| } else { |
| /* Search back for the beginning of the paragraph, where |
| * Paragraph is 1) A line with leading whitespace |
| * or 2) A line following an empty line. |
| */ |
| while (current->prev != NULL) { |
| if (isspace(current->data[0]) || !current->data[0]) |
| break; |
| |
| current = current->prev; |
| current_y--; |
| } |
| |
| /* First line with leading whitespace may be empty. */ |
| if (empty_line(current->data)) { |
| if (current->next) { |
| current = current->next; |
| current_y++; |
| } else |
| return 1; |
| } |
| } |
| initial = current; |
| initial_y = current_y; |
| |
| set_modified(); |
| /* Put the whole paragraph into one big line. */ |
| while (current->next && !isspace(current->next->data[0]) |
| && current->next->data[0]) { |
| filestruct *tmpnode = current->next; |
| int len = strlen(current->data); |
| int len2 = strlen(current->next->data); |
| |
| /* length of both strings plus space between strings and ending \0. */ |
| current->data = nrealloc(current->data, len + len2 + 2); |
| current->data[len++] = ' '; |
| current->data[len] = '\0'; |
| |
| strncat(current->data, current->next->data, len2); |
| |
| unlink_node(tmpnode); |
| delete_node(tmpnode); |
| } |
| |
| totsize -= strlen(current->data); |
| |
| justify_format(current->data); |
| |
| slen = strlen(current->data); |
| totsize += slen; |
| |
| if((strlenpt(current->data) > (fill)) |
| && !no_spaces(current->data)) { |
| do { |
| int i = 0; |
| int len2 = 0; |
| filestruct *tmpline = nmalloc(sizeof(filestruct)); |
| |
| /* Start at fill , unless line isn't that long (but it |
| * appears at least fill long with tabs. |
| */ |
| if (slen > fill) |
| i = fill; |
| else |
| i = slen; |
| for (; i > 0; i--) { |
| if (isspace(current->data[i]) && |
| ((strlenpt(current->data) - strlen(current->data +i)) <= |
| fill)) break; |
| } |
| if (!i) |
| break; |
| |
| current->data[i] = '\0'; |
| |
| len2 = strlen(current->data + i + 1); |
| tmpline->data = nmalloc(len2 + 1); |
| |
| /* Skip the white space in current. */ |
| memcpy(tmpline->data, current->data + i + 1, len2); |
| tmpline->data[len2] = '\0'; |
| |
| current->data = nrealloc(current->data, i + 1); |
| |
| tmpline->prev = current; |
| tmpline->next = current->next; |
| if (current->next != NULL) |
| current->next->prev = tmpline; |
| |
| current->next = tmpline; |
| current = tmpline; |
| slen -= i + 1; |
| current_y++; |
| } while ((strlenpt(current->data) > (fill)) |
| && !no_spaces(current->data)); |
| } |
| |
| if (current->next) |
| current = current->next; |
| else |
| filebot = current; |
| current_x = 0; |
| placewewant = 0; |
| |
| renumber(initial); |
| totlines = filebot->lineno; |
| |
| werase(edit); |
| |
| if ((current_y < 0) || (current_y >= editwinrows - 1) |
| || (initial_y <= 0)) { |
| edit_update(current, CENTER); |
| center_cursor(); |
| } else { |
| fix_editbot(); |
| } |
| |
| edit_refresh(); |
| statusbar("Justify Complete"); |
| return 1; |
| #else |
| nano_small_msg(); |
| return 1; |
| #endif |
| } |
| |
| |
| void help_init(void) |
| { |
| int i, sofar = 0; |
| long allocsize = 1; /* How much space we're gonna need for the help text */ |
| char buf[BUFSIZ]; |
| |
| /* Compute the space needed for the shortcut lists - we add 15 to |
| have room for the shortcut abbrev and its possible alternate keys */ |
| for (i = 0; i < MAIN_LIST_LEN; i++) |
| if (main_list[i].help != NULL) |
| allocsize += strlen(main_list[i].help) + 15; |
| |
| allocsize += strlen(help_text_init); |
| |
| if (help_text != NULL) |
| free(help_text); |
| |
| /* Allocate space for the help text */ |
| help_text = nmalloc(allocsize); |
| |
| /* Now add the text we want */ |
| strcpy(help_text, help_text_init); |
| |
| /* Now add our shortcut info */ |
| for (i = 0; i < MAIN_LIST_LEN; i++) { |
| sofar = snprintf(buf, BUFSIZ, "^%c ", main_list[i].val + 64); |
| |
| if (main_list[i].misc1 > KEY_F0 && main_list[i].misc1 <= KEY_F(64)) |
| sofar += snprintf(&buf[sofar], BUFSIZ - sofar, "(F%d) ", |
| main_list[i].misc1 - KEY_F0); |
| else |
| sofar += snprintf(&buf[sofar], BUFSIZ - sofar, " "); |
| |
| if (main_list[i].altval > 0) |
| sofar += snprintf(&buf[sofar], BUFSIZ - sofar, "(@%c) ", |
| main_list[i].altval - 32); |
| else |
| sofar += snprintf(&buf[sofar], BUFSIZ - sofar, " "); |
| |
| if (main_list[i].help != NULL) |
| snprintf(&buf[sofar], BUFSIZ - sofar, "%s", main_list[i].help); |
| |
| strcat(help_text, buf); |
| strcat(help_text, "\n"); |
| } |
| |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| int optchr; |
| int kbinput; /* Input from keyboard */ |
| long startline = 0; /* Line to try and start at */ |
| struct sigaction act; /* For our lovely signals */ |
| int keyhandled = 0; /* Have we handled the keystroke yet? */ |
| int tmpkey = 0, i; |
| char *argv0; |
| struct termios term; |
| |
| #ifdef HAVE_GETOPT_LONG |
| int option_index = 0; |
| struct option long_options[] = { |
| #ifdef _POSIX_VERSION |
| {"regexp", 0, 0, 'R'}, |
| #endif |
| {"version", 0, 0, 'V'}, |
| {"const", 0, 0, 'c'}, |
| {"suspend", 0, 0, 'z'}, |
| {"nowrap", 0, 0, 'w'}, |
| {"nohelp", 0, 0, 'x'}, |
| {"help", 0, 0, 'h'}, |
| #ifndef NANO_SMALL |
| {"cut", 0, 0, 'k'}, |
| #endif |
| {"autoindent", 0, 0, 'i'}, |
| {"tempfile", 0, 0, 't'}, |
| {"speller", 1, 0, 's'}, |
| {"fill", 1, 0, 'r'}, |
| {"mouse", 0, 0, 'm'}, |
| {"pico", 0, 0, 'p'}, |
| {"nofollow", 0, 0, 'l'}, |
| {"tabsize", 1, 0, 'T'}, |
| {0, 0, 0, 0} |
| }; |
| #endif |
| |
| /* Flag inits... */ |
| SET(FOLLOW_SYMLINKS); |
| |
| #ifndef NANO_SMALL |
| setlocale(LC_ALL, ""); |
| bindtextdomain(PACKAGE, LOCALEDIR); |
| textdomain(PACKAGE); |
| #endif |
| |
| #ifdef HAVE_GETOPT_LONG |
| while ((optchr = getopt_long(argc, argv, "?T:RVchiklmpr:s:tvwxz", |
| long_options, &option_index)) != EOF) { |
| #else |
| while ((optchr = getopt(argc, argv, "h?T:RVciklmpr:s:tvwxz")) != EOF) { |
| #endif |
| |
| switch (optchr) { |
| case 'T': |
| tabsize = atoi(optarg); |
| if (tabsize <= 0) { |
| usage(); /* To stop bogus data for tab width */ |
| finish(1); |
| } |
| break; |
| #ifdef _POSIX_VERSION |
| case 'R': |
| SET(USE_REGEXP); |
| break; |
| #endif |
| case 'V': |
| version(); |
| exit(0); |
| case 'c': |
| SET(CONSTUPDATE); |
| break; |
| case 'h': |
| case '?': |
| usage(); |
| exit(0); |
| case 'i': |
| SET(AUTOINDENT); |
| break; |
| #ifndef NANO_SMALL |
| case 'k': |
| SET(CUT_TO_END); |
| break; |
| #else |
| case 'k': |
| usage(); /* Oops! You dont really have that option */ |
| finish(1); |
| #endif |
| case 'l': |
| UNSET(FOLLOW_SYMLINKS); |
| break; |
| case 'm': |
| SET(USE_MOUSE); |
| break; |
| case 'p': |
| SET(PICO_MSGS); |
| break; |
| case 'r': |
| fill = atoi(optarg); |
| if (fill <= 0) { |
| usage(); /* To stop bogus data (like a string) */ |
| finish(1); |
| } |
| break; |
| case 's': |
| alt_speller = nmalloc(strlen(optarg) + 1); |
| strcpy(alt_speller, optarg); |
| break; |
| case 't': |
| SET(TEMP_OPT); |
| break; |
| case 'v': |
| SET(VIEW_MODE); |
| break; |
| case 'w': |
| SET(NO_WRAP); |
| break; |
| case 'x': |
| SET(NO_HELP); |
| break; |
| case 'z': |
| SET(SUSPEND); |
| break; |
| default: |
| usage(); |
| exit(0); |
| } |
| |
| } |
| |
| argv0 = strrchr(argv[0], '/'); |
| if ((argv0 && strstr(argv0, "pico")) |
| || (!argv0 && strstr(argv[0], "pico"))) |
| SET(PICO_MSGS); |
| |
| filename = nmalloc(PATH_MAX); |
| strcpy(filename, ""); |
| |
| /* 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) |
| strcpy(filename, ""); |
| else { |
| /* Look for the +line flag... */ |
| if (argv[optind][0] == '+') { |
| startline = atoi(&argv[optind][1]); |
| optind++; |
| if (argc == 1 || argc <= optind) |
| strcpy(filename, ""); |
| else |
| strncpy(filename, argv[optind], 132); |
| } else |
| strncpy(filename, argv[optind], 132); |
| |
| } |
| |
| |
| /* First back up the old settings so they can be restored, duh */ |
| tcgetattr(0, &oldterm); |
| |
| term = oldterm; |
| term.c_cc[VINTR] = _POSIX_VDISABLE; |
| term.c_cc[VQUIT] = _POSIX_VDISABLE; |
| term.c_lflag &= ~IEXTEN; |
| tcsetattr(0, TCSANOW, &term); |
| |
| /* now ncurses init stuff... */ |
| initscr(); |
| savetty(); |
| nonl(); |
| cbreak(); |
| noecho(); |
| timeout(0); |
| |
| /* Set up some global variables */ |
| global_init(); |
| shortcut_init(); |
| init_help_msg(); |
| help_init(); |
| |
| /* 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); |
| sigaction(SIGQUIT, &act, NULL); |
| |
| if (!ISSET(SUSPEND)) |
| sigaction(SIGTSTP, &act, NULL); |
| |
| /* Trap SIGHUP cuz we want to write the file out. */ |
| act.sa_handler = handle_hup; |
| sigaction(SIGHUP, &act, NULL); |
| |
| act.sa_handler = handle_sigwinch; |
| sigaction(SIGWINCH, &act, NULL); |
| |
| #ifdef DEBUG |
| fprintf(stderr, _("Main: set up windows\n")); |
| #endif |
| |
| /* Setup up the main text window */ |
| edit = newwin(editwinrows, COLS, 2, 0); |
| keypad(edit, TRUE); |
| |
| #ifndef NANO_SMALL |
| #ifdef NCURSES_MOUSE_VERSION |
| if (ISSET(USE_MOUSE)) { |
| mousemask(BUTTON1_RELEASED, NULL); |
| mouseinterval(50); |
| } |
| #endif |
| #endif |
| |
| /* And the other windows */ |
| topwin = newwin(2, COLS, 0, 0); |
| bottomwin = newwin(3 - no_help(), COLS, LINES - 3 + no_help(), 0); |
| keypad(bottomwin, TRUE); |
| |
| #ifdef DEBUG |
| fprintf(stderr, _("Main: bottom win\n")); |
| #endif |
| /* Set up up bottom of window */ |
| display_main_list(); |
| |
| #ifdef DEBUG |
| fprintf(stderr, _("Main: open file\n")); |
| #endif |
| |
| titlebar(); |
| if (argc == 1) |
| new_file(); |
| else |
| open_file(filename, 0, 0); |
| |
| if (startline > 0) |
| do_gotoline(startline); |
| else |
| edit_update(fileage, CENTER); |
| |
| edit_refresh(); |
| reset_cursor(); |
| |
| while (1) { |
| kbinput = wgetch(edit); |
| if (kbinput == 27) { /* Grab Alt-key stuff first */ |
| switch (kbinput = wgetch(edit)) { |
| case 91: |
| |
| switch (kbinput = wgetch(edit)) { |
| case 'A': |
| kbinput = KEY_UP; |
| break; |
| case 'B': |
| kbinput = KEY_DOWN; |
| break; |
| case 'C': |
| kbinput = KEY_RIGHT; |
| break; |
| case 'D': |
| kbinput = KEY_LEFT; |
| break; |
| case 'H': |
| kbinput = KEY_HOME; |
| break; |
| case 'F': |
| kbinput = KEY_END; |
| break; |
| case 49: /* X window F-keys */ |
| tmpkey = wgetch(edit); |
| kbinput = KEY_F(tmpkey) - 48; |
| wgetch(edit); /* Junk character */ |
| break; |
| case 53: /* page up */ |
| kbinput = KEY_PPAGE; |
| if ((kbinput = wgetch(edit)) == 126) |
| kbinput = KEY_PPAGE; /* Ignore extra tilde */ |
| else { /* I guess this could happen ;-) */ |
| ungetch(kbinput); |
| continue; |
| } |
| break; |
| case 54: /* page down */ |
| kbinput = KEY_NPAGE; |
| if ((kbinput = wgetch(edit)) == 126) |
| kbinput = KEY_NPAGE; /* Same thing here */ |
| else { |
| ungetch(kbinput); |
| continue; |
| } |
| break; |
| |
| default: |
| #ifdef DEBUG |
| fprintf(stderr, _("I got Alt-[-%c! (%d)\n"), |
| kbinput, kbinput); |
| #endif |
| break; |
| } |
| break; |
| default: |
| |
| /* Check for the altkey defs.... */ |
| for (i = 0; i <= MAIN_LIST_LEN - 1; i++) |
| if (kbinput == main_list[i].altval || |
| kbinput == main_list[i].altval - 32) { |
| kbinput = main_list[i].val; |
| break; |
| } |
| #ifdef DEBUG |
| fprintf(stderr, _("I got Alt-%c! (%d)\n"), kbinput, |
| kbinput); |
| #endif |
| break; |
| } |
| } |
| /* Look through the main shortcut list to see if we've hit a |
| shortcut key */ |
| for (i = 0; i < MAIN_LIST_LEN; i++) { |
| if (kbinput == main_list[i].val || |
| (main_list[i].misc1 && kbinput == main_list[i].misc1) || |
| (main_list[i].misc2 && kbinput == main_list[i].misc2)) { |
| if (ISSET(VIEW_MODE) && !main_list[i].viewok) |
| print_view_warning(); |
| else |
| main_list[i].func(); |
| keyhandled = 1; |
| } |
| } |
| /* Last gasp, stuff that's not in the main lists */ |
| if (!keyhandled) |
| switch (kbinput) { |
| #ifndef NANO_SMALL |
| #ifdef NCURSES_MOUSE_VERSION |
| case KEY_MOUSE: |
| do_mouse(); |
| break; |
| #endif |
| #endif |
| case 0: /* Erg */ |
| do_next_word(); |
| break; |
| case 331: /* Stuff that we don't want to do squat */ |
| case -1: |
| case 410: /* Must ignore this, it gets sent when we resize */ |
| 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(); |
| break; |
| } |
| do_char(kbinput); |
| } |
| if (ISSET(CONSTUPDATE)) |
| do_cursorpos(); |
| |
| reset_cursor(); |
| wrefresh(edit); |
| keyhandled = 0; |
| } |
| |
| getchar(); |
| finish(0); |
| |
| } |