Use this constant everywhere when referring to a null pointer instead of casting 0 to various types of pointers. Created using following semantic patch: @@ type type; @@ - (type *)0 + NULL Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>
670 lines
17 KiB
C
670 lines
17 KiB
C
/*
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* Calcurse - text-based organizer
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*
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* Copyright (c) 2004-2011 calcurse Development Team <misc@calcurse.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the
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* following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Send your feedback or comments to : misc@calcurse.org
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* Calcurse home page : http://calcurse.org
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*
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*/
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#include <string.h>
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#include <math.h>
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#include "calcurse.h"
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#define MAXKEYVAL KEY_MAX /* ncurses defines KEY_MAX as maximum key value */
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struct keydef_s {
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char *label;
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char *binding;
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};
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struct key_str_s {
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char *str;
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struct key_str_s *next;
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};
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static struct key_str_s *keys[NBKEYS];
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static enum key actions[MAXKEYVAL];
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static struct keydef_s keydef[NBKEYS] = {
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{"generic-cancel", "ESC"},
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{"generic-select", "SPC"},
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{"generic-credits", "@"},
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{"generic-help", "?"},
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{"generic-quit", "q Q"},
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{"generic-save", "s S C-s"},
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{"generic-cut", "C-x"},
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{"generic-paste", "C-v"},
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{"generic-change-view", "TAB"},
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{"generic-import", "i I"},
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{"generic-export", "x X"},
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{"generic-goto", "g G"},
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{"generic-other-cmd", "o O"},
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{"generic-config-menu", "c C"},
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{"generic-redraw", "C-r"},
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{"generic-add-appt", "C-a"},
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{"generic-add-todo", "C-t"},
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{"generic-next-day", "C-l"},
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{"generic-prev-day", "C-h"},
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{"generic-next-week", "C-j"},
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{"generic-prev-week", "C-k"},
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{"generic-scroll-down", "C-n"},
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{"generic-scroll-up", "C-p"},
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{"generic-goto-today", "C-g"},
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{"move-right", "l L RGT"},
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{"move-left", "h H LFT"},
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{"move-down", "j J DWN"},
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{"move-up", "k K UP"},
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{"start-of-week", "0"},
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{"end-of-week", "$"},
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{"add-item", "a A"},
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{"del-item", "d D"},
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{"edit-item", "e E"},
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{"view-item", "v V"},
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{"pipe-item", "|"},
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{"flag-item", "!"},
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{"repeat", "r R"},
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{"edit-note", "n N"},
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{"view-note", ">"},
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{"raise-priority", "+"},
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{"lower-priority", "-"},
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};
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static void
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dump_intro (FILE *fd)
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{
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char *intro =
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_("#\n"
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"# Calcurse keys configuration file\n#\n"
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"# This file sets the keybindings used by Calcurse.\n"
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"# Lines beginning with \"#\" are comments, and ignored by Calcurse.\n"
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"# To assign a keybinding to an action, this file must contain a line\n"
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"# with the following syntax:\n#\n"
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"# ACTION KEY1 KEY2 ... KEYn\n#\n"
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"# Where ACTION is what will be performed when KEY1, KEY2, ..., or KEYn\n"
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"# will be pressed.\n"
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"#\n"
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"# To define bindings which use the CONTROL key, prefix the key with "
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"'C-'.\n"
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"# The escape, space bar and horizontal Tab key can be specified using\n"
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"# the 'ESC', 'SPC' and 'TAB' keyword, respectively.\n"
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"# Arrow keys can also be specified with the UP, DWN, LFT, RGT keywords.\n"
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"# Last, Home and End keys can be assigned using 'KEY_HOME' and 'KEY_END'\n"
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"# keywords."
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"\n#\n"
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"# A description of what each ACTION keyword is used for is available\n"
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"# from calcurse online configuration menu.\n");
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fprintf (fd, "%s\n", intro);
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}
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void
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keys_init (void)
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{
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int i;
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for (i = 0; i < MAXKEYVAL; i++)
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actions[i] = KEY_UNDEF;
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bzero (keys, NBKEYS);
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}
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void
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keys_free (void)
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{
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struct key_str_s *o, **i;
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int key;
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for (key = 0; key < NBKEYS; key++)
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{
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if (keys[key] == NULL)
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continue;
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i = &keys[key];
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while (*i)
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{
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o = *i;
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*i = o->next;
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mem_free (o->str);
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mem_free (o);
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}
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}
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}
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void
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keys_dump_defaults (char *file)
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{
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FILE *fd;
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int i;
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fd = fopen (file, "w");
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EXIT_IF (fd == NULL, _("FATAL ERROR: could not create default keys file."));
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dump_intro (fd);
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for (i = 0; i < NBKEYS; i++)
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fprintf (fd, "%s %s\n", keydef[i].label, keydef[i].binding);
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file_close (fd, __FILE_POS__);
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}
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char *
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keys_get_label (enum key key)
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{
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EXIT_IF (key < 0 || key > NBKEYS,
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_("FATAL ERROR: key value out of bounds"));
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return keydef[key].label;
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}
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enum key
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keys_get_action (int pressed)
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{
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if (pressed < 0 || pressed > MAXKEYVAL)
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return -1;
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else
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return actions[pressed];
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}
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enum key
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keys_getch (WINDOW *win, int *count)
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{
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int ch = '0';
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if (count)
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{
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*count = 0;
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do
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{
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*count = *count * 10 + ch - '0';
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ch = wgetch (win);
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}
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while ((ch == '0' && *count > 0) || (ch >= '1' && ch <= '9'));
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if (*count == 0)
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*count = 1;
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}
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else
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ch = wgetch (win);
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switch (ch)
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{
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case KEY_RESIZE:
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return KEY_RESIZE;
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default:
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return keys_get_action (ch);
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}
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}
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static void
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add_key_str (enum key action, int key)
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{
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struct key_str_s *new, **i;
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if (action < 0 || action > NBKEYS)
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return;
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new = mem_malloc (sizeof (struct key_str_s));
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new->str = mem_strdup (keys_int2str (key));
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new->next = NULL;
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i = &keys[action];
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for (;;)
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{
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if (*i == NULL)
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{
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*i = new;
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break;
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}
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else if ((*i)->next == NULL)
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{
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(*i)->next = new;
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break;
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}
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i = &(*i)->next;
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}
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}
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int
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keys_assign_binding (int key, enum key action)
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{
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if (key < 0 || key > MAXKEYVAL || actions[key] != KEY_UNDEF)
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return 1;
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else
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{
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actions[key] = action;
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add_key_str (action, key);
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}
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return 0;
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}
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static void
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del_key_str (enum key action, int key)
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{
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struct key_str_s *old, **i;
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char oldstr[BUFSIZ];
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if (action < 0 || action > NBKEYS)
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return;
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strncpy (oldstr, keys_int2str (key), BUFSIZ);
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for (i = &keys[action]; *i; i = &(*i)->next)
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{
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if (!strcmp ((*i)->str, oldstr))
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{
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old = *i;
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*i = old->next;
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mem_free (old->str);
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mem_free (old);
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break;
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}
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}
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}
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void
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keys_remove_binding (int key, enum key action)
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{
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if (key < 0 || key > MAXKEYVAL)
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return;
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else
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{
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actions[key] = KEY_UNDEF;
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del_key_str (action, key);
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}
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}
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int
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keys_str2int (char *key)
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{
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const struct string CONTROL_KEY = STRING_BUILD ("C-");
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const struct string TAB_KEY = STRING_BUILD ("TAB");
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const struct string SPACE_KEY = STRING_BUILD ("SPC");
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const struct string ESCAPE_KEY = STRING_BUILD ("ESC");
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const struct string CURSES_KEY_UP = STRING_BUILD ("UP");
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const struct string CURSES_KEY_DOWN = STRING_BUILD ("DWN");
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const struct string CURSES_KEY_LEFT = STRING_BUILD ("LFT");
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const struct string CURSES_KEY_RIGHT = STRING_BUILD ("RGT");
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const struct string CURSES_KEY_HOME = STRING_BUILD ("KEY_HOME");
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const struct string CURSES_KEY_END = STRING_BUILD ("KEY_END");
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if (!key)
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return -1;
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if (strlen (key) == 1)
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return (int)key[0];
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else
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{
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if (key[0] == '^')
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return CTRL ((int)key[1]);
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else if (!strncmp (key, CONTROL_KEY.str, CONTROL_KEY.len))
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return CTRL ((int)key[CONTROL_KEY.len]);
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else if (!strncmp (key, TAB_KEY.str, TAB_KEY.len))
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return TAB;
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else if (!strncmp (key, ESCAPE_KEY.str, ESCAPE_KEY.len))
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return ESCAPE;
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else if (!strncmp (key, SPACE_KEY.str, SPACE_KEY.len))
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return SPACE;
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else if (!strncmp (key, CURSES_KEY_UP.str, CURSES_KEY_UP.len))
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return KEY_UP;
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else if (!strncmp (key, CURSES_KEY_DOWN.str, CURSES_KEY_DOWN.len))
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return KEY_DOWN;
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else if (!strncmp (key, CURSES_KEY_LEFT.str, CURSES_KEY_LEFT.len))
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return KEY_LEFT;
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else if (!strncmp (key, CURSES_KEY_RIGHT.str, CURSES_KEY_RIGHT.len))
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return KEY_RIGHT;
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else if (!strncmp (key, CURSES_KEY_HOME.str, CURSES_KEY_HOME.len))
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return KEY_HOME;
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else if (!strncmp (key, CURSES_KEY_END.str, CURSES_KEY_END.len))
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return KEY_END;
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else
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return -1;
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}
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}
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char *
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keys_int2str (int key)
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{
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switch (key)
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{
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case TAB:
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return "TAB";
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case SPACE:
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return "SPC";
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case ESCAPE:
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return "ESC";
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case KEY_UP:
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return "UP";
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case KEY_DOWN:
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return "DWN";
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case KEY_LEFT:
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return "LFT";
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case KEY_RIGHT:
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return "RGT";
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case KEY_HOME:
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return "KEY_HOME";
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case KEY_END:
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return "KEY_END";
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default:
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return (char *)keyname (key);
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}
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}
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int
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keys_action_count_keys (enum key action)
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{
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struct key_str_s *key;
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int i;
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i = 0;
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for (key = keys[action]; key; key = key->next)
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i++;
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return i;
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}
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char *
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keys_action_firstkey (enum key action)
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{
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return (keys[action] != NULL) ? keys[action]->str : "XXX";
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}
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char *
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keys_action_nkey (enum key action, int keynum)
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{
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struct key_str_s *key;
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int i;
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i = 0;
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for (key = keys[action]; key; key = key->next)
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{
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if (i == keynum)
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return key->str;
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i++;
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}
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return NULL;
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}
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char *
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keys_action_allkeys (enum key action)
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{
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static char keystr[BUFSIZ];
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struct key_str_s *i;
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const char *CHAR_SPACE = " ";
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if (keys[action] == NULL)
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return NULL;
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keystr[0] = '\0';
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for (i = keys[action]; i; i = i->next)
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{
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const int MAXLEN = sizeof (keystr) - 1 - strlen (keystr);
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strncat (keystr, i->str, MAXLEN - 1);
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strncat (keystr, CHAR_SPACE, 1);
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}
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return keystr;
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}
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/* Need this to display keys properly inside status bar. */
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static char *
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keys_format_label (char *key, int keylen)
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{
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static char fmtkey[BUFSIZ];
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const int len = strlen (key);
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char *dot = ".";
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int i;
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if (keylen > BUFSIZ)
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return NULL;
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bzero (fmtkey, sizeof (fmtkey));
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if (len == 0)
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strncpy (fmtkey, "?", sizeof (fmtkey));
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else if (len <= keylen)
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{
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for (i = 0; i < keylen - len; i++)
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fmtkey[i] = ' ';
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strncat (fmtkey, key, keylen);
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}
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else
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{
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for (i = 0; i < keylen - 1; i++)
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fmtkey[i] = key[i];
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strncat (fmtkey, dot, strlen (dot));
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}
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return fmtkey;
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}
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void
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keys_display_bindings_bar (WINDOW *win, struct binding **binding, int first_key,
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int last_key)
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{
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int i, j, cmdlen, space_between_cmds;
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/* Total length of a command. */
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cmdlen = KEYS_KEYLEN + 1 + KEYS_LABELEN;
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space_between_cmds = floor (col / KEYS_CMDS_PER_LINE - cmdlen);
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cmdlen += space_between_cmds;
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j = 0;
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wins_erase_status_bar ();
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for (i = first_key; i < last_key; i += 2)
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{
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char key[KEYS_KEYLEN + 1], *fmtkey;
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const int KEY_POS = j * cmdlen;
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const int LABEL_POS = j * cmdlen + KEYS_KEYLEN + 1;
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strncpy (key, keys_action_firstkey (binding[i]->action), KEYS_KEYLEN);
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fmtkey = keys_format_label (key, KEYS_KEYLEN);
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custom_apply_attr (win, ATTR_HIGHEST);
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mvwprintw (win, 0, KEY_POS, fmtkey);
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if (i + 1 != last_key)
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{
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strncpy (key, keys_action_firstkey (binding[i + 1]->action),
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KEYS_KEYLEN);
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key[KEYS_KEYLEN] = 0;
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fmtkey = keys_format_label (key, KEYS_KEYLEN);
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mvwprintw (win, 1, KEY_POS, fmtkey);
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}
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custom_remove_attr (win, ATTR_HIGHEST);
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mvwprintw (win, 0, LABEL_POS, binding[i]->label);
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if (i + 1 != last_key)
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mvwprintw (win, 1, LABEL_POS, binding[i + 1]->label);
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j++;
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}
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wnoutrefresh (win);
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}
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/*
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* Display information about the given key.
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* (could not add the keys descriptions to keydef variable, because of i18n).
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*/
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void
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keys_popup_info (enum key key)
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{
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char *info[NBKEYS];
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WINDOW *infowin;
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info[KEY_GENERIC_CANCEL] =
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_("Cancel the ongoing action.");
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info[KEY_GENERIC_SELECT] =
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_("Select the highlighted item.");
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info[KEY_GENERIC_CREDITS] =
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_("Print general information about calcurse's authors, license, etc.");
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info[KEY_GENERIC_HELP] =
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_("Display hints whenever some help screens are available.");
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info[KEY_GENERIC_QUIT] =
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_("Exit from the current menu, or quit calcurse.");
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info[KEY_GENERIC_SAVE] =
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_("Save calcurse data.");
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info[KEY_GENERIC_CHANGE_VIEW] =
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_("Select next panel in calcurse main screen.");
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info[KEY_GENERIC_IMPORT] =
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_("Import data from an external file.");
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info[KEY_GENERIC_EXPORT] =
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_("Export data to a new file format.");
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info[KEY_GENERIC_GOTO] =
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_("Select the day to go to.");
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info[KEY_GENERIC_OTHER_CMD] =
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_("Show next possible actions inside status bar.");
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info[KEY_GENERIC_CONFIG_MENU] =
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_("Enter the configuration menu.");
|
|
info[KEY_GENERIC_REDRAW] =
|
|
_("Redraw calcurse's screen.");
|
|
info[KEY_GENERIC_ADD_APPT] =
|
|
_("Add an appointment, whichever panel is currently selected.");
|
|
info[KEY_GENERIC_ADD_TODO] =
|
|
_("Add a todo item, whichever panel is currently selected.");
|
|
info[KEY_GENERIC_NEXT_DAY] =
|
|
_("Move to next day in calendar, whichever panel is currently selected.");
|
|
info[KEY_GENERIC_PREV_DAY] =
|
|
_("Move to previous day in calendar, whichever panel is currently "
|
|
"selected.");
|
|
info[KEY_GENERIC_NEXT_WEEK] =
|
|
_("Move to next week in calendar, whichever panel is currently selected.");
|
|
info[KEY_GENERIC_PREV_WEEK] =
|
|
_("Move to previous week in calendar, whichever panel is currently "
|
|
"selected");
|
|
info[KEY_GENERIC_SCROLL_DOWN] =
|
|
_("Scroll window down (e.g. when displaying text inside a popup window).");
|
|
info[KEY_GENERIC_SCROLL_UP] =
|
|
_("Scroll window up (e.g. when displaying text inside a popup window).");
|
|
info[KEY_GENERIC_GOTO_TODAY] =
|
|
_("Go to today, whichever panel is selected.");
|
|
info[KEY_MOVE_RIGHT] =
|
|
_("Move to the right.");
|
|
info[KEY_MOVE_LEFT] =
|
|
_("Move to the left.");
|
|
info[KEY_MOVE_DOWN] =
|
|
_("Move down.");
|
|
info[KEY_MOVE_UP] =
|
|
_("Move up.");
|
|
info[KEY_START_OF_WEEK] =
|
|
_("Select the first day of the current week when inside the calendar "
|
|
"panel.");
|
|
info[KEY_END_OF_WEEK] =
|
|
_("Select the last day of the current week when inside the calendar "
|
|
"panel.");
|
|
info[KEY_ADD_ITEM] =
|
|
_("Add an item to the currently selected panel.");
|
|
info[KEY_DEL_ITEM] =
|
|
_("Delete the currently selected item.");
|
|
info[KEY_EDIT_ITEM] =
|
|
_("Edit the currently seleted item.");
|
|
info[KEY_VIEW_ITEM] =
|
|
_("Display the currently selected item inside a popup window.");
|
|
info[KEY_FLAG_ITEM] =
|
|
_("Flag the currently selected item as important.");
|
|
info[KEY_REPEAT_ITEM] =
|
|
_("Repeat an item");
|
|
info[KEY_PIPE_ITEM] =
|
|
_("Pipe the currently selected item to an external program.");
|
|
info[KEY_EDIT_NOTE] =
|
|
_("Attach (or edit if one exists) a note to the currently selected item");
|
|
info[KEY_VIEW_NOTE] =
|
|
_("View the note attached to the currently selected item.");
|
|
info[KEY_RAISE_PRIORITY] =
|
|
_("Raise a task priority inside the todo panel.");
|
|
info[KEY_LOWER_PRIORITY] =
|
|
_("Lower a task priority inside the todo panel.");
|
|
|
|
if (key < 0 || key > NBKEYS)
|
|
return;
|
|
|
|
#define WINROW 10
|
|
#define WINCOL (col - 4)
|
|
infowin = popup (WINROW, WINCOL, (row - WINROW) / 2, (col - WINCOL) / 2,
|
|
keydef[key].label, info[key], 1);
|
|
keys_getch (infowin, NULL);
|
|
delwin (infowin);
|
|
#undef WINROW
|
|
#undef WINCOL
|
|
}
|
|
|
|
void
|
|
keys_save_bindings (FILE *fd)
|
|
{
|
|
int i;
|
|
|
|
EXIT_IF (fd == NULL, _("FATAL ERROR: null file pointer."));
|
|
dump_intro (fd);
|
|
for (i = 0; i < NBKEYS; i++)
|
|
fprintf (fd, "%s %s\n", keydef[i].label, keys_action_allkeys (i));
|
|
}
|
|
|
|
int
|
|
keys_check_missing_bindings (void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < NBKEYS; i++)
|
|
{
|
|
if (keys[i] == NULL)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
keys_fill_missing (void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < NBKEYS; i++)
|
|
{
|
|
if (keys[i] == NULL)
|
|
{
|
|
char *p, tmpbuf[BUFSIZ];
|
|
|
|
strncpy (tmpbuf, keydef[i].binding, BUFSIZ);
|
|
p = tmpbuf;
|
|
for (;;)
|
|
{
|
|
char key_ch[BUFSIZ];
|
|
|
|
while (*p == ' ')
|
|
p++;
|
|
if (sscanf (p, "%s", key_ch) == 1)
|
|
{
|
|
int ch, used;
|
|
|
|
ch = keys_str2int (key_ch);
|
|
used = keys_assign_binding (ch, i);
|
|
if (used)
|
|
WARN_MSG (_("When adding default key for \"%s\", "
|
|
"\"%s\" was already assigned!"),
|
|
keydef[i].label, key_ch);
|
|
p += strlen (key_ch) + 1;
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|