mirror of
https://github.com/tmux/tmux.git
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295 lines
7.1 KiB
C
295 lines
7.1 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <string.h>
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#include "tmux.h"
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static key_code key_string_search_table(const char *);
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static key_code key_string_get_modifiers(const char **);
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const struct {
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const char *string;
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key_code key;
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} key_string_table[] = {
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/* Function keys. */
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{ "F1", KEYC_F1 },
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{ "F2", KEYC_F2 },
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{ "F3", KEYC_F3 },
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{ "F4", KEYC_F4 },
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{ "F5", KEYC_F5 },
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{ "F6", KEYC_F6 },
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{ "F7", KEYC_F7 },
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{ "F8", KEYC_F8 },
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{ "F9", KEYC_F9 },
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{ "F10", KEYC_F10 },
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{ "F11", KEYC_F11 },
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{ "F12", KEYC_F12 },
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{ "IC", KEYC_IC },
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{ "DC", KEYC_DC },
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{ "Home", KEYC_HOME },
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{ "End", KEYC_END },
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{ "NPage", KEYC_NPAGE },
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{ "PageDown", KEYC_NPAGE },
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{ "PgDn", KEYC_NPAGE },
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{ "PPage", KEYC_PPAGE },
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{ "PageUp", KEYC_PPAGE },
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{ "PgUp", KEYC_PPAGE },
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{ "Tab", '\011' },
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{ "BTab", KEYC_BTAB },
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{ "Space", ' ' },
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{ "BSpace", KEYC_BSPACE },
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{ "Enter", '\r' },
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{ "Escape", '\033' },
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/* Arrow keys. */
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{ "Up", KEYC_UP },
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{ "Down", KEYC_DOWN },
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{ "Left", KEYC_LEFT },
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{ "Right", KEYC_RIGHT },
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/* Numeric keypad. */
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{ "KP/", KEYC_KP_SLASH },
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{ "KP*", KEYC_KP_STAR },
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{ "KP-", KEYC_KP_MINUS },
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{ "KP7", KEYC_KP_SEVEN },
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{ "KP8", KEYC_KP_EIGHT },
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{ "KP9", KEYC_KP_NINE },
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{ "KP+", KEYC_KP_PLUS },
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{ "KP4", KEYC_KP_FOUR },
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{ "KP5", KEYC_KP_FIVE },
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{ "KP6", KEYC_KP_SIX },
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{ "KP1", KEYC_KP_ONE },
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{ "KP2", KEYC_KP_TWO },
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{ "KP3", KEYC_KP_THREE },
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{ "KPEnter", KEYC_KP_ENTER },
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{ "KP0", KEYC_KP_ZERO },
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{ "KP.", KEYC_KP_PERIOD },
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/* Mouse keys. */
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KEYC_MOUSE_STRING(MOUSEDOWN1, MouseDown1),
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KEYC_MOUSE_STRING(MOUSEDOWN2, MouseDown2),
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KEYC_MOUSE_STRING(MOUSEDOWN3, MouseDown3),
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KEYC_MOUSE_STRING(MOUSEUP1, MouseUp1),
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KEYC_MOUSE_STRING(MOUSEUP2, MouseUp2),
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KEYC_MOUSE_STRING(MOUSEUP3, MouseUp3),
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KEYC_MOUSE_STRING(MOUSEDRAG1, MouseDrag1),
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KEYC_MOUSE_STRING(MOUSEDRAG2, MouseDrag2),
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KEYC_MOUSE_STRING(MOUSEDRAG3, MouseDrag3),
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KEYC_MOUSE_STRING(WHEELUP, WheelUp),
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KEYC_MOUSE_STRING(WHEELDOWN, WheelDown),
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};
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/* Find key string in table. */
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static key_code
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key_string_search_table(const char *string)
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{
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u_int i;
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for (i = 0; i < nitems(key_string_table); i++) {
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if (strcasecmp(string, key_string_table[i].string) == 0)
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return (key_string_table[i].key);
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}
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return (KEYC_UNKNOWN);
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}
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/* Find modifiers. */
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static key_code
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key_string_get_modifiers(const char **string)
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{
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key_code modifiers;
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modifiers = 0;
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while (((*string)[0] != '\0') && (*string)[1] == '-') {
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switch ((*string)[0]) {
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case 'C':
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case 'c':
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modifiers |= KEYC_CTRL;
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break;
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case 'M':
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case 'm':
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modifiers |= KEYC_ESCAPE;
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break;
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case 'S':
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case 's':
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modifiers |= KEYC_SHIFT;
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break;
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}
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*string += 2;
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}
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return (modifiers);
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}
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/* Lookup a string and convert to a key value. */
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key_code
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key_string_lookup_string(const char *string)
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{
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static const char *other = "!#()+,-.0123456789:;<=>?'\r\t";
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key_code key;
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u_short u;
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int size;
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key_code modifiers;
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struct utf8_data ud;
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u_int i;
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enum utf8_state more;
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/* Is this no key? */
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if (strcasecmp(string, "None") == 0)
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return (KEYC_NONE);
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/* Is this a hexadecimal value? */
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if (string[0] == '0' && string[1] == 'x') {
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if (sscanf(string + 2, "%hx%n", &u, &size) != 1 || size > 4)
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return (KEYC_UNKNOWN);
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return (u);
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}
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/* Check for modifiers. */
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modifiers = 0;
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if (string[0] == '^' && string[1] != '\0') {
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modifiers |= KEYC_CTRL;
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string++;
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}
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modifiers |= key_string_get_modifiers(&string);
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if (string[0] == '\0')
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return (KEYC_UNKNOWN);
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/* Is this a standard ASCII key? */
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if (string[1] == '\0' && (u_char)string[0] <= 127) {
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key = (u_char)string[0];
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if (key < 32 || key == 127)
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return (KEYC_UNKNOWN);
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} else {
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/* Try as a UTF-8 key. */
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if ((more = utf8_open(&ud, (u_char)*string)) == UTF8_MORE) {
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if (strlen(string) != ud.size)
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return (KEYC_UNKNOWN);
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for (i = 1; i < ud.size; i++)
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more = utf8_append(&ud, (u_char)string[i]);
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if (more != UTF8_DONE)
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return (KEYC_UNKNOWN);
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key = utf8_combine(&ud);
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return (key | modifiers);
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}
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/* Otherwise look the key up in the table. */
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key = key_string_search_table(string);
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if (key == KEYC_UNKNOWN)
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return (KEYC_UNKNOWN);
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}
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/* Convert the standard control keys. */
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if (key < KEYC_BASE && (modifiers & KEYC_CTRL) && !strchr(other, key)) {
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if (key >= 97 && key <= 122)
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key -= 96;
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else if (key >= 64 && key <= 95)
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key -= 64;
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else if (key == 32)
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key = 0;
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else if (key == 63)
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key = KEYC_BSPACE;
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else
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return (KEYC_UNKNOWN);
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modifiers &= ~KEYC_CTRL;
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}
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return (key | modifiers);
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}
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/* Convert a key code into string format, with prefix if necessary. */
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const char *
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key_string_lookup_key(key_code key)
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{
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static char out[24];
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char tmp[8];
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u_int i;
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struct utf8_data ud;
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*out = '\0';
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/* Handle no key. */
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if (key == KEYC_NONE)
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return ("None");
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/* Handle special keys. */
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if (key == KEYC_UNKNOWN)
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return ("Unknown");
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if (key == KEYC_MOUSE)
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return ("Mouse");
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/*
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* Special case: display C-@ as C-Space. Could do this below in
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* the (key >= 0 && key <= 32), but this way we let it be found
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* in key_string_table, for the unlikely chance that we might
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* change its name.
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*/
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if ((key & KEYC_MASK_KEY) == 0)
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key = ' ' | KEYC_CTRL | (key & KEYC_MASK_MOD);
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/* Fill in the modifiers. */
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if (key & KEYC_CTRL)
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strlcat(out, "C-", sizeof out);
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if (key & KEYC_ESCAPE)
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strlcat(out, "M-", sizeof out);
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if (key & KEYC_SHIFT)
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strlcat(out, "S-", sizeof out);
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key &= KEYC_MASK_KEY;
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/* Try the key against the string table. */
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for (i = 0; i < nitems(key_string_table); i++) {
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if (key == key_string_table[i].key)
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break;
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}
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if (i != nitems(key_string_table)) {
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strlcat(out, key_string_table[i].string, sizeof out);
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return (out);
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}
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/* Is this a UTF-8 key? */
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if (key > 127 && key < KEYC_BASE) {
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if (utf8_split(key, &ud) == UTF8_DONE) {
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memcpy(out, ud.data, ud.size);
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out[ud.size] = '\0';
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return (out);
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}
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}
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/* Invalid keys are errors. */
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if (key == 127 || key > 255) {
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snprintf(out, sizeof out, "Invalid#%llx", key);
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return (out);
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}
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/* Check for standard or control key. */
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if (key <= 32) {
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if (key == 0 || key > 26)
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xsnprintf(tmp, sizeof tmp, "C-%c", (int)(64 + key));
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else
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xsnprintf(tmp, sizeof tmp, "C-%c", (int)(96 + key));
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} else if (key >= 32 && key <= 126) {
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tmp[0] = key;
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tmp[1] = '\0';
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} else if (key >= 128)
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xsnprintf(tmp, sizeof tmp, "\\%llo", key);
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strlcat(out, tmp, sizeof out);
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return (out);
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}
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