statusbar_xplustabs(), get_statusbar_page_start(),
nanoget_repaint(), nanogetstr(), statusq(), and
statusq_abort() (all moved to prompt.c). (DLR)
+ - Move functions specific to the help browser to their own
+ source file, and adjust related variables accordingly. New
+ file help.c; changes to help_init(), help_line_len(), and
+ do_help() (all moved to help.c). (DLR)
- nano.h:
- Readd MIN_EDITOR_COLS #define. (DLR)
- winio.c:
- Tweak the "c-file" regex for characters to properly accept
'\"' and reject '"' and '''. (DLR)
- src/Makefile.am:
- - Add prompt.c to nano_SOURCES. (DLR)
+ - Add help.c and prompt.c to nano_SOURCES. (DLR)
GNU nano 1.3.9 - 2005.10.23
- General:
+2005-11-01 David Lawrence Ramsey <pooka109@cox.net>
+
+ * POTFILES.in: Add help.c.
+
2006-10-23 Jordi Mallach <jordi@gnu.org>
* ca.po: Updated Catalan translation.
src/files.c
src/global.c
+src/help.c
src/nano.c
src/rcfile.c
src/search.c
cut.c \
files.c \
global.c \
+ help.c \
move.c \
nano.c \
nano.h \
ssize_t tabsize = -1; /* Our internal tabsize variable. The
default value is set in main(). */
-#ifndef DISABLE_HELP
-char *help_text; /* The text in the help window */
-#endif
-
#ifndef DISABLE_OPERATINGDIR
char *operating_dir = NULL; /* Operating directory, which we can't */
char *full_operating_dir = NULL;/* go higher than */
#ifndef DISABLE_SPELLER
if (alt_speller != NULL)
free(alt_speller);
-#endif
-#ifndef DISABLE_HELP
- if (help_text != NULL)
- free(help_text);
#endif
if (answer != NULL)
free(answer);
--- /dev/null
+/* $Id$ */
+/**************************************************************************
+ * help.c *
+ * *
+ * Copyright (C) 2005 Chris Allegretta *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2, or (at your option) *
+ * any later version. *
+ * *
+ * This program is distributed in the hope that it will be useful, but *
+ * WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
+ * General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program; if not, write to the Free Software *
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA *
+ * 02110-1301, USA. *
+ * *
+ **************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include "proto.h"
+
+#ifndef DISABLE_HELP
+
+static char *help_text = NULL;
+ /* The text displayed in the help window. */
+
+/* This function allocates help_text, and stores the help string in it.
+ * help_text should be NULL initially. */
+void help_init(void)
+{
+ size_t allocsize = 0; /* Space needed for help_text. */
+ const char *htx[3]; /* Untranslated help message. We break
+ * it up into three chunks in case the
+ * full string is too long for the
+ * compiler to handle. */
+ char *ptr;
+ const shortcut *s;
+#ifndef NANO_SMALL
+ const toggle *t;
+#ifdef ENABLE_NANORC
+ bool old_whitespace = ISSET(WHITESPACE_DISPLAY);
+
+ UNSET(WHITESPACE_DISPLAY);
+#endif
+#endif
+
+ /* First, set up the initial help text for the current function. */
+ if (currshortcut == whereis_list || currshortcut == replace_list ||
+ currshortcut == replace_list_2) {
+ htx[0] = N_("Search Command Help Text\n\n "
+ "Enter the words or characters you would like to "
+ "search for, and then press Enter. If there is a "
+ "match for the text you entered, the screen will be "
+ "updated to the location of the nearest match for the "
+ "search string.\n\n The previous search string will be "
+ "shown in brackets after the search prompt. Hitting "
+ "Enter without entering any text will perform the "
+ "previous search. ");
+ htx[1] = N_("If you have selected text with the mark and then "
+ "search to replace, only matches in the selected text "
+ "will be replaced.\n\n The following function keys are "
+ "available in Search mode:\n\n");
+ htx[2] = NULL;
+ } else if (currshortcut == gotoline_list) {
+ htx[0] = N_("Go To Line Help Text\n\n "
+ "Enter the line number that you wish to go to and hit "
+ "Enter. If there are fewer lines of text than the "
+ "number you entered, you will be brought to the last "
+ "line of the file.\n\n The following function keys are "
+ "available in Go To Line mode:\n\n");
+ htx[1] = NULL;
+ htx[2] = NULL;
+ } else if (currshortcut == insertfile_list) {
+ htx[0] = N_("Insert File Help Text\n\n "
+ "Type in the name of a file to be inserted into the "
+ "current file buffer at the current cursor "
+ "location.\n\n If you have compiled nano with multiple "
+ "file buffer support, and enable multiple file buffers "
+ "with the -F or --multibuffer command line flags, the "
+ "Meta-F toggle, or a nanorc file, inserting a file "
+ "will cause it to be loaded into a separate buffer "
+ "(use Meta-< and > to switch between file buffers). ");
+ htx[1] = N_("If you need another blank buffer, do not enter "
+ "any filename, or type in a nonexistent filename at "
+ "the prompt and press Enter.\n\n The following "
+ "function keys are available in Insert File mode:\n\n");
+ htx[2] = NULL;
+ } else if (currshortcut == writefile_list) {
+ htx[0] = N_("Write File Help Text\n\n "
+ "Type the name that you wish to save the current file "
+ "as and press Enter to save the file.\n\n If you have "
+ "selected text with the mark, you will be prompted to "
+ "save only the selected portion to a separate file. To "
+ "reduce the chance of overwriting the current file with "
+ "just a portion of it, the current filename is not the "
+ "default in this mode.\n\n The following function keys "
+ "are available in Write File mode:\n\n");
+ htx[1] = NULL;
+ htx[2] = NULL;
+ }
+#ifndef DISABLE_BROWSER
+ else if (currshortcut == browser_list) {
+ htx[0] = N_("File Browser Help Text\n\n "
+ "The file browser is used to visually browse the "
+ "directory structure to select a file for reading "
+ "or writing. You may use the arrow keys or Page Up/"
+ "Down to browse through the files, and S or Enter to "
+ "choose the selected file or enter the selected "
+ "directory. To move up one level, select the "
+ "directory called \"..\" at the top of the file "
+ "list.\n\n The following function keys are available "
+ "in the file browser:\n\n");
+ htx[1] = NULL;
+ htx[2] = NULL;
+ } else if (currshortcut == gotodir_list) {
+ htx[0] = N_("Browser Go To Directory Help Text\n\n "
+ "Enter the name of the directory you would like to "
+ "browse to.\n\n If tab completion has not been "
+ "disabled, you can use the Tab key to (attempt to) "
+ "automatically complete the directory name.\n\n The "
+ "following function keys are available in Browser Go "
+ "To Directory mode:\n\n");
+ htx[1] = NULL;
+ htx[2] = NULL;
+ }
+#endif
+#ifndef DISABLE_SPELLER
+ else if (currshortcut == spell_list) {
+ htx[0] = N_("Spell Check Help Text\n\n "
+ "The spell checker checks the spelling of all text in "
+ "the current file. When an unknown word is "
+ "encountered, it is highlighted and a replacement can "
+ "be edited. It will then prompt to replace every "
+ "instance of the given misspelled word in the current "
+ "file, or, if you have selected text with the mark, in "
+ "the selected text.\n\n The following other functions "
+ "are available in Spell Check mode:\n\n");
+ htx[1] = NULL;
+ htx[2] = NULL;
+ }
+#endif
+#ifndef NANO_SMALL
+ else if (currshortcut == extcmd_list) {
+ htx[0] = N_("Execute Command Help Text\n\n "
+ "This menu allows you to insert the output of a "
+ "command run by the shell into the current buffer (or "
+ "a new buffer in multiple file buffer mode). If you "
+ "need another blank buffer, do not enter any "
+ "command.\n\n The following keys are available in "
+ "Execute Command mode:\n\n");
+ htx[1] = NULL;
+ htx[2] = NULL;
+ }
+#endif
+ else {
+ /* Default to the main help list. */
+ htx[0] = N_(" nano help text\n\n "
+ "The nano editor is designed to emulate the "
+ "functionality and ease-of-use of the UW Pico text "
+ "editor. There are four main sections of the editor. "
+ "The top line shows the program version, the current "
+ "filename being edited, and whether or not the file "
+ "has been modified. Next is the main editor window "
+ "showing the file being edited. The status line is "
+ "the third line from the bottom and shows important "
+ "messages. The bottom two lines show the most "
+ "commonly used shortcuts in the editor.\n\n ");
+ htx[1] = N_("The notation for shortcuts is as follows: "
+ "Control-key sequences are notated with a caret (^) "
+ "symbol and can be entered either by using the Control "
+ "(Ctrl) key or pressing the Escape (Esc) key twice. "
+ "Escape-key sequences are notated with the Meta (M) "
+ "symbol and can be entered using either the Esc, Alt, "
+ "or Meta key depending on your keyboard setup. ");
+ htx[2] = N_("Also, pressing Esc twice and then typing a "
+ "three-digit decimal number from 000 to 255 will enter "
+ "the character with the corresponding value. The "
+ "following keystrokes are available in the main editor "
+ "window. Alternative keys are shown in "
+ "parentheses:\n\n");
+ }
+
+ htx[0] = _(htx[0]);
+ if (htx[1] != NULL)
+ htx[1] = _(htx[1]);
+ if (htx[2] != NULL)
+ htx[2] = _(htx[2]);
+
+ allocsize += strlen(htx[0]);
+ if (htx[1] != NULL)
+ allocsize += strlen(htx[1]);
+ if (htx[2] != NULL)
+ allocsize += strlen(htx[2]);
+
+ /* The space needed for the shortcut lists, at most COLS characters,
+ * plus '\n'. */
+ allocsize += (COLS < 24 ? (24 * mb_cur_max()) :
+ ((COLS + 1) * mb_cur_max())) * length_of_list(currshortcut);
+
+#ifndef NANO_SMALL
+ /* If we're on the main list, we also count the toggle help text.
+ * Each line has "M-%c\t\t\t", which fills 24 columns, plus a space,
+ * plus translated text, plus '\n'. */
+ if (currshortcut == main_list) {
+ size_t endis_len = strlen(_("enable/disable"));
+
+ for (t = toggles; t != NULL; t = t->next)
+ allocsize += 8 + strlen(t->desc) + endis_len;
+ }
+#endif
+
+ /* help_text has been freed and set to NULL unless the user resized
+ * while in the help screen. */
+ if (help_text != NULL)
+ free(help_text);
+
+ /* Allocate space for the help text. */
+ help_text = charalloc(allocsize + 1);
+
+ /* Now add the text we want. */
+ strcpy(help_text, htx[0]);
+ if (htx[1] != NULL)
+ strcat(help_text, htx[1]);
+ if (htx[2] != NULL)
+ strcat(help_text, htx[2]);
+
+ ptr = help_text + strlen(help_text);
+
+ /* Now add our shortcut info. Assume that each shortcut has, at the
+ * very least, an equivalent control key, an equivalent primary meta
+ * key sequence, or both. Also assume that the meta key values are
+ * not control characters. We can display a maximum of 3 shortcut
+ * entries. */
+ for (s = currshortcut; s != NULL; s = s->next) {
+ int entries = 0;
+
+ /* Control key. */
+ if (s->ctrlval != NANO_NO_KEY) {
+ entries++;
+ /* Yucky sentinel values that we can't handle a better
+ * way. */
+ if (s->ctrlval == NANO_CONTROL_SPACE) {
+ char *space_ptr = display_string(_("Space"), 0, 6,
+ FALSE);
+
+ ptr += sprintf(ptr, "^%s", space_ptr);
+
+ free(space_ptr);
+ } else if (s->ctrlval == NANO_CONTROL_8)
+ ptr += sprintf(ptr, "^?");
+ /* Normal values. */
+ else
+ ptr += sprintf(ptr, "^%c", s->ctrlval + 64);
+ *(ptr++) = '\t';
+ }
+
+ /* Function key. */
+ if (s->funcval != NANO_NO_KEY) {
+ entries++;
+ /* If this is the first entry, put it in the middle. */
+ if (entries == 1) {
+ entries++;
+ *(ptr++) = '\t';
+ }
+ ptr += sprintf(ptr, "(F%d)", s->funcval - KEY_F0);
+ *(ptr++) = '\t';
+ }
+
+ /* Primary meta key sequence. If it's the first entry, don't
+ * put parentheses around it. */
+ if (s->metaval != NANO_NO_KEY) {
+ entries++;
+ /* If this is the last entry, put it at the end. */
+ if (entries == 2 && s->miscval == NANO_NO_KEY) {
+ entries++;
+ *(ptr++) = '\t';
+ }
+ /* Yucky sentinel values that we can't handle a better
+ * way. */
+ if (s->metaval == NANO_ALT_SPACE && entries == 1) {
+ char *space_ptr = display_string(_("Space"), 0, 5,
+ FALSE);
+
+ ptr += sprintf(ptr, "M-%s", space_ptr);
+
+ free(space_ptr);
+ } else
+ /* Normal values. */
+ ptr += sprintf(ptr, (entries == 1) ? "M-%c" : "(M-%c)",
+ toupper(s->metaval));
+ *(ptr++) = '\t';
+ }
+
+ /* Miscellaneous meta key sequence. */
+ if (entries < 3 && s->miscval != NANO_NO_KEY) {
+ entries++;
+ /* If this is the last entry, put it at the end. */
+ if (entries == 2) {
+ entries++;
+ *(ptr++) = '\t';
+ }
+ ptr += sprintf(ptr, "(M-%c)", toupper(s->miscval));
+ *(ptr++) = '\t';
+ }
+
+ /* Make sure all the help text starts at the same place. */
+ while (entries < 3) {
+ entries++;
+ *(ptr++) = '\t';
+ }
+
+ assert(s->help != NULL);
+
+ if (COLS > 24) {
+ char *help_ptr = display_string(s->help, 0, COLS - 24,
+ FALSE);
+
+ ptr += sprintf(ptr, help_ptr);
+
+ free(help_ptr);
+ }
+
+ ptr += sprintf(ptr, "\n");
+ }
+
+#ifndef NANO_SMALL
+ /* And the toggles... */
+ if (currshortcut == main_list) {
+ for (t = toggles; t != NULL; t = t->next) {
+
+ assert(t->desc != NULL);
+
+ ptr += sprintf(ptr, "M-%c\t\t\t%s %s\n", toupper(t->val),
+ t->desc, _("enable/disable"));
+ }
+ }
+
+#ifdef ENABLE_NANORC
+ if (old_whitespace)
+ SET(WHITESPACE_DISPLAY);
+#endif
+#endif
+
+ /* If all went well, we didn't overwrite the allocated space for
+ * help_text. */
+ assert(strlen(help_text) <= allocsize + 1);
+}
+
+/* Calculate the next line of help_text, starting at ptr. */
+size_t help_line_len(const char *ptr)
+{
+ int help_cols = (COLS > 24) ? COLS - 8 : 24;
+
+ /* Try to break the line at (COLS - 8) columns if we have more than
+ * 24 columns, and at 24 columns otherwise. */
+ size_t retval = break_line(ptr, help_cols, TRUE);
+ size_t retval_save = retval;
+
+ /* Get the length of the entire line up to a null or a newline. */
+ while (*(ptr + retval) != '\0' && *(ptr + retval) != '\n')
+ retval += move_mbright(ptr + retval, 0);
+
+ /* If the entire line doesn't go more than 8 columns beyond where we
+ * tried to break it, we should display it as-is. Otherwise, we
+ * should display it only up to the break. */
+ if (strnlenpt(ptr, retval) > help_cols + 8)
+ retval = retval_save;
+
+ return retval;
+}
+
+/* Our dynamic, shortcut-list-compliant help function. */
+void do_help(void)
+{
+ int line = 0;
+ /* The line number in help_text of the first displayed help
+ * line. This variable is zero-based. */
+ bool no_more = FALSE;
+ /* no_more means the end of the help text is shown, so don't go
+ * down any more. */
+ int kbinput = ERR;
+ bool meta_key, func_key;
+
+ bool old_no_help = ISSET(NO_HELP);
+#ifndef DISABLE_MOUSE
+ const shortcut *oldshortcut = currshortcut;
+ /* We will set currshortcut to allow clicking on the help
+ * screen's shortcut list. */
+#endif
+
+ curs_set(0);
+ blank_edit();
+ wattroff(bottomwin, A_REVERSE);
+ blank_statusbar();
+
+ /* Set help_text as the string to display. */
+ help_init();
+
+ assert(help_text != NULL);
+
+#ifndef DISABLE_MOUSE
+ /* Set currshortcut to allow clicking on the help screen's shortcut
+ * list, after help_init() is called. */
+ currshortcut = help_list;
+#endif
+
+ if (ISSET(NO_HELP)) {
+ /* Make sure that the help screen's shortcut list will actually
+ * be displayed. */
+ UNSET(NO_HELP);
+ window_init();
+ }
+
+ bottombars(help_list);
+
+ do {
+ int i;
+ int old_line = line;
+ /* We redisplay the help only if it moved. */
+ const char *ptr = help_text;
+
+ switch (kbinput) {
+#ifndef DISABLE_MOUSE
+ case KEY_MOUSE:
+ {
+ int mouse_x, mouse_y;
+ get_mouseinput(&mouse_x, &mouse_y, TRUE);
+ }
+ break;
+#endif
+ case NANO_PREVPAGE_KEY:
+ case NANO_PREVPAGE_FKEY:
+ if (line > 0) {
+ line -= editwinrows - 2;
+ if (line < 0)
+ line = 0;
+ }
+ break;
+ case NANO_NEXTPAGE_KEY:
+ case NANO_NEXTPAGE_FKEY:
+ if (!no_more)
+ line += editwinrows - 2;
+ break;
+ case NANO_PREVLINE_KEY:
+ if (line > 0)
+ line--;
+ break;
+ case NANO_NEXTLINE_KEY:
+ if (!no_more)
+ line++;
+ break;
+ }
+
+ if (kbinput == NANO_REFRESH_KEY)
+ total_redraw();
+ else {
+ if (line == old_line && kbinput != ERR)
+ goto skip_redisplay;
+
+ blank_edit();
+ }
+
+ /* Calculate where in the text we should be, based on the
+ * page. */
+ for (i = 0; i < line; i++) {
+ ptr += help_line_len(ptr);
+ if (*ptr == '\n')
+ ptr++;
+ }
+
+ for (i = 0; i < editwinrows && *ptr != '\0'; i++) {
+ size_t j = help_line_len(ptr);
+
+ mvwaddnstr(edit, i, 0, ptr, j);
+ ptr += j;
+ if (*ptr == '\n')
+ ptr++;
+ }
+ no_more = (*ptr == '\0');
+
+ skip_redisplay:
+ kbinput = get_kbinput(edit, &meta_key, &func_key);
+ } while (kbinput != NANO_EXIT_KEY && kbinput != NANO_EXIT_FKEY);
+
+#ifndef DISABLE_MOUSE
+ currshortcut = oldshortcut;
+#endif
+
+ if (old_no_help) {
+ blank_bottombars();
+ wnoutrefresh(bottomwin);
+ SET(NO_HELP);
+ window_init();
+ } else
+ bottombars(currshortcut);
+
+ curs_set(1);
+ edit_refresh();
+
+ /* The help_init() at the beginning allocated help_text. Since
+ * help_text has now been written to the screen, we don't need it
+ * anymore. */
+ free(help_text);
+ help_text = NULL;
+}
+
+#endif /* !DISABLE_HELP */
}
#endif
-#ifndef DISABLE_HELP
-/* This function allocates help_text, and stores the help string in it.
- * help_text should be NULL initially. */
-void help_init(void)
-{
- size_t allocsize = 0; /* Space needed for help_text. */
- const char *htx[3]; /* Untranslated help message. We break
- * it up into three chunks in case the
- * full string is too long for the
- * compiler to handle. */
- char *ptr;
- const shortcut *s;
-#ifndef NANO_SMALL
- const toggle *t;
-#ifdef ENABLE_NANORC
- bool old_whitespace = ISSET(WHITESPACE_DISPLAY);
-
- UNSET(WHITESPACE_DISPLAY);
-#endif
-#endif
-
- /* First, set up the initial help text for the current function. */
- if (currshortcut == whereis_list || currshortcut == replace_list ||
- currshortcut == replace_list_2) {
- htx[0] = N_("Search Command Help Text\n\n "
- "Enter the words or characters you would like to "
- "search for, and then press Enter. If there is a "
- "match for the text you entered, the screen will be "
- "updated to the location of the nearest match for the "
- "search string.\n\n The previous search string will be "
- "shown in brackets after the search prompt. Hitting "
- "Enter without entering any text will perform the "
- "previous search. ");
- htx[1] = N_("If you have selected text with the mark and then "
- "search to replace, only matches in the selected text "
- "will be replaced.\n\n The following function keys are "
- "available in Search mode:\n\n");
- htx[2] = NULL;
- } else if (currshortcut == gotoline_list) {
- htx[0] = N_("Go To Line Help Text\n\n "
- "Enter the line number that you wish to go to and hit "
- "Enter. If there are fewer lines of text than the "
- "number you entered, you will be brought to the last "
- "line of the file.\n\n The following function keys are "
- "available in Go To Line mode:\n\n");
- htx[1] = NULL;
- htx[2] = NULL;
- } else if (currshortcut == insertfile_list) {
- htx[0] = N_("Insert File Help Text\n\n "
- "Type in the name of a file to be inserted into the "
- "current file buffer at the current cursor "
- "location.\n\n If you have compiled nano with multiple "
- "file buffer support, and enable multiple file buffers "
- "with the -F or --multibuffer command line flags, the "
- "Meta-F toggle, or a nanorc file, inserting a file "
- "will cause it to be loaded into a separate buffer "
- "(use Meta-< and > to switch between file buffers). ");
- htx[1] = N_("If you need another blank buffer, do not enter "
- "any filename, or type in a nonexistent filename at "
- "the prompt and press Enter.\n\n The following "
- "function keys are available in Insert File mode:\n\n");
- htx[2] = NULL;
- } else if (currshortcut == writefile_list) {
- htx[0] = N_("Write File Help Text\n\n "
- "Type the name that you wish to save the current file "
- "as and press Enter to save the file.\n\n If you have "
- "selected text with the mark, you will be prompted to "
- "save only the selected portion to a separate file. To "
- "reduce the chance of overwriting the current file with "
- "just a portion of it, the current filename is not the "
- "default in this mode.\n\n The following function keys "
- "are available in Write File mode:\n\n");
- htx[1] = NULL;
- htx[2] = NULL;
- }
-#ifndef DISABLE_BROWSER
- else if (currshortcut == browser_list) {
- htx[0] = N_("File Browser Help Text\n\n "
- "The file browser is used to visually browse the "
- "directory structure to select a file for reading "
- "or writing. You may use the arrow keys or Page Up/"
- "Down to browse through the files, and S or Enter to "
- "choose the selected file or enter the selected "
- "directory. To move up one level, select the "
- "directory called \"..\" at the top of the file "
- "list.\n\n The following function keys are available "
- "in the file browser:\n\n");
- htx[1] = NULL;
- htx[2] = NULL;
- } else if (currshortcut == gotodir_list) {
- htx[0] = N_("Browser Go To Directory Help Text\n\n "
- "Enter the name of the directory you would like to "
- "browse to.\n\n If tab completion has not been "
- "disabled, you can use the Tab key to (attempt to) "
- "automatically complete the directory name.\n\n The "
- "following function keys are available in Browser Go "
- "To Directory mode:\n\n");
- htx[1] = NULL;
- htx[2] = NULL;
- }
-#endif
-#ifndef DISABLE_SPELLER
- else if (currshortcut == spell_list) {
- htx[0] = N_("Spell Check Help Text\n\n "
- "The spell checker checks the spelling of all text in "
- "the current file. When an unknown word is "
- "encountered, it is highlighted and a replacement can "
- "be edited. It will then prompt to replace every "
- "instance of the given misspelled word in the current "
- "file, or, if you have selected text with the mark, in "
- "the selected text.\n\n The following other functions "
- "are available in Spell Check mode:\n\n");
- htx[1] = NULL;
- htx[2] = NULL;
- }
-#endif
-#ifndef NANO_SMALL
- else if (currshortcut == extcmd_list) {
- htx[0] = N_("Execute Command Help Text\n\n "
- "This menu allows you to insert the output of a "
- "command run by the shell into the current buffer (or "
- "a new buffer in multiple file buffer mode). If you "
- "need another blank buffer, do not enter any "
- "command.\n\n The following keys are available in "
- "Execute Command mode:\n\n");
- htx[1] = NULL;
- htx[2] = NULL;
- }
-#endif
- else {
- /* Default to the main help list. */
- htx[0] = N_(" nano help text\n\n "
- "The nano editor is designed to emulate the "
- "functionality and ease-of-use of the UW Pico text "
- "editor. There are four main sections of the editor. "
- "The top line shows the program version, the current "
- "filename being edited, and whether or not the file "
- "has been modified. Next is the main editor window "
- "showing the file being edited. The status line is "
- "the third line from the bottom and shows important "
- "messages. The bottom two lines show the most "
- "commonly used shortcuts in the editor.\n\n ");
- htx[1] = N_("The notation for shortcuts is as follows: "
- "Control-key sequences are notated with a caret (^) "
- "symbol and can be entered either by using the Control "
- "(Ctrl) key or pressing the Escape (Esc) key twice. "
- "Escape-key sequences are notated with the Meta (M) "
- "symbol and can be entered using either the Esc, Alt, "
- "or Meta key depending on your keyboard setup. ");
- htx[2] = N_("Also, pressing Esc twice and then typing a "
- "three-digit decimal number from 000 to 255 will enter "
- "the character with the corresponding value. The "
- "following keystrokes are available in the main editor "
- "window. Alternative keys are shown in "
- "parentheses:\n\n");
- }
-
- htx[0] = _(htx[0]);
- if (htx[1] != NULL)
- htx[1] = _(htx[1]);
- if (htx[2] != NULL)
- htx[2] = _(htx[2]);
-
- allocsize += strlen(htx[0]);
- if (htx[1] != NULL)
- allocsize += strlen(htx[1]);
- if (htx[2] != NULL)
- allocsize += strlen(htx[2]);
-
- /* The space needed for the shortcut lists, at most COLS characters,
- * plus '\n'. */
- allocsize += (COLS < 24 ? (24 * mb_cur_max()) :
- ((COLS + 1) * mb_cur_max())) * length_of_list(currshortcut);
-
-#ifndef NANO_SMALL
- /* If we're on the main list, we also count the toggle help text.
- * Each line has "M-%c\t\t\t", which fills 24 columns, plus a space,
- * plus translated text, plus '\n'. */
- if (currshortcut == main_list) {
- size_t endis_len = strlen(_("enable/disable"));
-
- for (t = toggles; t != NULL; t = t->next)
- allocsize += 8 + strlen(t->desc) + endis_len;
- }
-#endif
-
- /* help_text has been freed and set to NULL unless the user resized
- * while in the help screen. */
- free(help_text);
-
- /* Allocate space for the help text. */
- help_text = charalloc(allocsize + 1);
-
- /* Now add the text we want. */
- strcpy(help_text, htx[0]);
- if (htx[1] != NULL)
- strcat(help_text, htx[1]);
- if (htx[2] != NULL)
- strcat(help_text, htx[2]);
-
- ptr = help_text + strlen(help_text);
-
- /* Now add our shortcut info. Assume that each shortcut has, at the
- * very least, an equivalent control key, an equivalent primary meta
- * key sequence, or both. Also assume that the meta key values are
- * not control characters. We can display a maximum of 3 shortcut
- * entries. */
- for (s = currshortcut; s != NULL; s = s->next) {
- int entries = 0;
-
- /* Control key. */
- if (s->ctrlval != NANO_NO_KEY) {
- entries++;
- /* Yucky sentinel values that we can't handle a better
- * way. */
- if (s->ctrlval == NANO_CONTROL_SPACE) {
- char *space_ptr = display_string(_("Space"), 0, 6,
- FALSE);
-
- ptr += sprintf(ptr, "^%s", space_ptr);
-
- free(space_ptr);
- } else if (s->ctrlval == NANO_CONTROL_8)
- ptr += sprintf(ptr, "^?");
- /* Normal values. */
- else
- ptr += sprintf(ptr, "^%c", s->ctrlval + 64);
- *(ptr++) = '\t';
- }
-
- /* Function key. */
- if (s->funcval != NANO_NO_KEY) {
- entries++;
- /* If this is the first entry, put it in the middle. */
- if (entries == 1) {
- entries++;
- *(ptr++) = '\t';
- }
- ptr += sprintf(ptr, "(F%d)", s->funcval - KEY_F0);
- *(ptr++) = '\t';
- }
-
- /* Primary meta key sequence. If it's the first entry, don't
- * put parentheses around it. */
- if (s->metaval != NANO_NO_KEY) {
- entries++;
- /* If this is the last entry, put it at the end. */
- if (entries == 2 && s->miscval == NANO_NO_KEY) {
- entries++;
- *(ptr++) = '\t';
- }
- /* Yucky sentinel values that we can't handle a better
- * way. */
- if (s->metaval == NANO_ALT_SPACE && entries == 1) {
- char *space_ptr = display_string(_("Space"), 0, 5,
- FALSE);
-
- ptr += sprintf(ptr, "M-%s", space_ptr);
-
- free(space_ptr);
- } else
- /* Normal values. */
- ptr += sprintf(ptr, (entries == 1) ? "M-%c" : "(M-%c)",
- toupper(s->metaval));
- *(ptr++) = '\t';
- }
-
- /* Miscellaneous meta key sequence. */
- if (entries < 3 && s->miscval != NANO_NO_KEY) {
- entries++;
- /* If this is the last entry, put it at the end. */
- if (entries == 2) {
- entries++;
- *(ptr++) = '\t';
- }
- ptr += sprintf(ptr, "(M-%c)", toupper(s->miscval));
- *(ptr++) = '\t';
- }
-
- /* Make sure all the help text starts at the same place. */
- while (entries < 3) {
- entries++;
- *(ptr++) = '\t';
- }
-
- assert(s->help != NULL);
-
- if (COLS > 24) {
- char *help_ptr = display_string(s->help, 0, COLS - 24,
- FALSE);
-
- ptr += sprintf(ptr, help_ptr);
-
- free(help_ptr);
- }
-
- ptr += sprintf(ptr, "\n");
- }
-
-#ifndef NANO_SMALL
- /* And the toggles... */
- if (currshortcut == main_list) {
- for (t = toggles; t != NULL; t = t->next) {
-
- assert(t->desc != NULL);
-
- ptr += sprintf(ptr, "M-%c\t\t\t%s %s\n", toupper(t->val),
- t->desc, _("enable/disable"));
- }
- }
-
-#ifdef ENABLE_NANORC
- if (old_whitespace)
- SET(WHITESPACE_DISPLAY);
-#endif
-#endif
-
- /* If all went well, we didn't overwrite the allocated space for
- * help_text. */
- assert(strlen(help_text) <= allocsize + 1);
-}
-#endif
-
#ifdef HAVE_GETOPT_LONG
#define print1opt(shortflag, longflag, desc) print1opt_full(shortflag, longflag, desc)
#else
extern WINDOW *topwin, *edit, *bottomwin;
extern char *answer;
-#ifndef DISABLE_HELP
-extern char *help_text;
-#endif
extern char *last_search;
extern char *last_replace;
#ifndef DISABLE_OPERATINGDIR
void thanks_for_all_the_fish(void);
#endif
+/* Public functions in help.c. */
+#ifndef DISABLE_HELP
+void help_init(void);
+size_t help_line_len(const char *ptr);
+void do_help(void);
+#endif
+
/* Public functions in move.c. */
void do_first_line(void);
void do_last_line(void);
#ifndef DISABLE_MOUSE
void mouse_init(void);
#endif
-#ifndef DISABLE_HELP
-void help_init(void);
-#endif
void print1opt_full(const char *shortflag
#ifdef HAVE_GETOPT_LONG
, const char *longflag
void display_main_list(void);
void do_cursorpos(bool constant);
void do_cursorpos_void(void);
-#ifndef DISABLE_HELP
-size_t help_line_len(const char *ptr);
-void do_help(void);
-#endif
void do_replace_highlight(bool highlight, const char *word);
#ifndef NDEBUG
int check_linenumbers(const filestruct *fileptr);
do_cursorpos(FALSE);
}
-#ifndef DISABLE_HELP
-/* Calculate the next line of help_text, starting at ptr. */
-size_t help_line_len(const char *ptr)
-{
- int help_cols = (COLS > 24) ? COLS - 8 : 24;
-
- /* Try to break the line at (COLS - 8) columns if we have more than
- * 24 columns, and at 24 columns otherwise. */
- size_t retval = break_line(ptr, help_cols, TRUE);
- size_t retval_save = retval;
-
- /* Get the length of the entire line up to a null or a newline. */
- while (*(ptr + retval) != '\0' && *(ptr + retval) != '\n')
- retval += move_mbright(ptr + retval, 0);
-
- /* If the entire line doesn't go more than 8 columns beyond where we
- * tried to break it, we should display it as-is. Otherwise, we
- * should display it only up to the break. */
- if (strnlenpt(ptr, retval) > help_cols + 8)
- retval = retval_save;
-
- return retval;
-}
-
-/* Our dynamic, shortcut-list-compliant help function. */
-void do_help(void)
-{
- int line = 0;
- /* The line number in help_text of the first displayed help
- * line. This variable is zero-based. */
- bool no_more = FALSE;
- /* no_more means the end of the help text is shown, so don't go
- * down any more. */
- int kbinput = ERR;
- bool meta_key, func_key;
-
- bool old_no_help = ISSET(NO_HELP);
-#ifndef DISABLE_MOUSE
- const shortcut *oldshortcut = currshortcut;
- /* We will set currshortcut to allow clicking on the help
- * screen's shortcut list. */
-#endif
-
- curs_set(0);
- blank_edit();
- wattroff(bottomwin, A_REVERSE);
- blank_statusbar();
-
- /* Set help_text as the string to display. */
- help_init();
-
- assert(help_text != NULL);
-
-#ifndef DISABLE_MOUSE
- /* Set currshortcut to allow clicking on the help screen's shortcut
- * list, AFTER help_init(). */
- currshortcut = help_list;
-#endif
-
- if (ISSET(NO_HELP)) {
- /* Make sure that the help screen's shortcut list will actually
- * be displayed. */
- UNSET(NO_HELP);
- window_init();
- }
-
- bottombars(help_list);
-
- do {
- int i;
- int old_line = line;
- /* We redisplay the help only if it moved. */
- const char *ptr = help_text;
-
- switch (kbinput) {
-#ifndef DISABLE_MOUSE
- case KEY_MOUSE:
- {
- int mouse_x, mouse_y;
- get_mouseinput(&mouse_x, &mouse_y, TRUE);
- }
- break;
-#endif
- case NANO_PREVPAGE_KEY:
- case NANO_PREVPAGE_FKEY:
- if (line > 0) {
- line -= editwinrows - 2;
- if (line < 0)
- line = 0;
- }
- break;
- case NANO_NEXTPAGE_KEY:
- case NANO_NEXTPAGE_FKEY:
- if (!no_more)
- line += editwinrows - 2;
- break;
- case NANO_PREVLINE_KEY:
- if (line > 0)
- line--;
- break;
- case NANO_NEXTLINE_KEY:
- if (!no_more)
- line++;
- break;
- }
-
- if (kbinput == NANO_REFRESH_KEY)
- total_redraw();
- else {
- if (line == old_line && kbinput != ERR)
- goto skip_redisplay;
-
- blank_edit();
- }
-
- /* Calculate where in the text we should be, based on the
- * page. */
- for (i = 0; i < line; i++) {
- ptr += help_line_len(ptr);
- if (*ptr == '\n')
- ptr++;
- }
-
- for (i = 0; i < editwinrows && *ptr != '\0'; i++) {
- size_t j = help_line_len(ptr);
-
- mvwaddnstr(edit, i, 0, ptr, j);
- ptr += j;
- if (*ptr == '\n')
- ptr++;
- }
- no_more = (*ptr == '\0');
-
- skip_redisplay:
- kbinput = get_kbinput(edit, &meta_key, &func_key);
- } while (kbinput != NANO_EXIT_KEY && kbinput != NANO_EXIT_FKEY);
-
-#ifndef DISABLE_MOUSE
- currshortcut = oldshortcut;
-#endif
-
- if (old_no_help) {
- blank_bottombars();
- wnoutrefresh(bottomwin);
- SET(NO_HELP);
- window_init();
- } else
- bottombars(currshortcut);
-
- curs_set(1);
- edit_refresh();
-
- /* The help_init() at the beginning allocated help_text. Since
- * help_text has now been written to the screen, we don't need it
- * anymore. */
- free(help_text);
- help_text = NULL;
-}
-#endif /* !DISABLE_HELP */
-
/* Highlight the current word being replaced or spell checked. We
* expect word to have tabs and control characters expanded. */
void do_replace_highlight(bool highlight, const char *word)
projects / nano.git / commitdiff