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/* $OpenBSD: key-string.c,v 1.13 2010/01/14 21:53:40 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <string.h>
#include "tmux.h"
int key_string_search_table(const char *);
struct {
const char *string;
int key;
} key_string_table[] = {
/* Function keys. */
{ "F1", KEYC_F1 },
{ "F2", KEYC_F2 },
{ "F3", KEYC_F3 },
{ "F4", KEYC_F4 },
{ "F5", KEYC_F5 },
{ "F6", KEYC_F6 },
{ "F7", KEYC_F7 },
{ "F8", KEYC_F8 },
{ "F9", KEYC_F9 },
{ "F10", KEYC_F10 },
{ "F11", KEYC_F11 },
{ "F12", KEYC_F12 },
{ "F13", KEYC_F13 },
{ "F14", KEYC_F14 },
{ "F15", KEYC_F15 },
{ "F16", KEYC_F16 },
{ "F17", KEYC_F17 },
{ "F18", KEYC_F18 },
{ "F19", KEYC_F19 },
{ "F20", KEYC_F20 },
{ "IC", KEYC_IC },
{ "DC", KEYC_DC },
{ "Home", KEYC_HOME },
{ "End", KEYC_END },
{ "NPage", KEYC_NPAGE },
{ "PPage", KEYC_PPAGE },
{ "Tab", '\011' },
{ "BTab", KEYC_BTAB },
{ "Space", ' ' },
{ "BSpace", KEYC_BSPACE },
{ "Enter", '\r' },
{ "Escape", '\033' },
/* Arrow keys. */
{ "Up", KEYC_UP },
{ "Down", KEYC_DOWN },
{ "Left", KEYC_LEFT },
{ "Right", KEYC_RIGHT },
/* Numeric keypad. */
{ "KP/", KEYC_KP_SLASH },
{ "KP*", KEYC_KP_STAR },
{ "KP-", KEYC_KP_MINUS },
{ "KP7", KEYC_KP_SEVEN },
{ "KP8", KEYC_KP_EIGHT },
{ "KP9", KEYC_KP_NINE },
{ "KP+", KEYC_KP_PLUS },
{ "KP4", KEYC_KP_FOUR },
{ "KP5", KEYC_KP_FIVE },
{ "KP6", KEYC_KP_SIX },
{ "KP1", KEYC_KP_ONE },
{ "KP2", KEYC_KP_TWO },
{ "KP3", KEYC_KP_THREE },
{ "KPEnter", KEYC_KP_ENTER },
{ "KP0", KEYC_KP_ZERO },
{ "KP.", KEYC_KP_PERIOD },
};
/* Find key string in table. */
int
key_string_search_table(const char *string)
{
u_int i;
for (i = 0; i < nitems(key_string_table); i++) {
if (strcasecmp(string, key_string_table[i].string) == 0)
return (key_string_table[i].key);
}
return (KEYC_NONE);
}
/* Lookup a string and convert to a key value, handling C-/M-/S- prefix. */
int
key_string_lookup_string(const char *string)
{
int key;
const char *ptr;
if (string[0] == '\0')
return (KEYC_NONE);
if (string[1] == '\0')
return ((u_char) string[0]);
ptr = NULL;
if ((string[0] == 'C' || string[0] == 'c') && string[1] == '-')
ptr = string + 2;
else if (string[0] == '^')
ptr = string + 1;
if (ptr != NULL) {
if (ptr[0] == '\0')
return (KEYC_NONE);
/*
* Lookup as a named key. If a function key (>= KEYC_BASE),
* return it with the ctrl modifier, otherwise fallthrough with
* the key value from the table (eg for C-Space). If not a
* named key, check for single character keys and try that.
*/
key = key_string_search_table(ptr);
if (key != KEYC_NONE) {
if (key >= KEYC_BASE)
return (key | KEYC_CTRL);
} else {
if (ptr[1] != '\0')
return (KEYC_NONE);
key = (u_char) ptr[0];
}
/*
* Figure out if the single character in key is a valid ctrl
* key.
*/
if (key == 32)
return (0);
if (key == 63)
return (KEYC_BSPACE);
if (key >= 64 && key <= 95)
return (key - 64);
if (key >= 97 && key <= 122)
return (key - 96);
return (KEYC_NONE);
}
if ((string[0] == 'M' || string[0] == 'm') && string[1] == '-') {
ptr = string + 2;
if (ptr[0] == '\0')
return (KEYC_NONE);
key = key_string_lookup_string(ptr);
if (key != KEYC_NONE) {
if (key >= KEYC_BASE)
return (key | KEYC_ESCAPE);
} else {
if (ptr[1] == '\0')
return (KEYC_NONE);
key = (u_char) ptr[0];
}
if (key >= 32 && key <= 127)
return (key | KEYC_ESCAPE);
return (KEYC_NONE);
}
if ((string[0] == 'S' || string[0] == 's') && string[1] == '-') {
ptr = string + 2;
if (ptr[0] == '\0')
return (KEYC_NONE);
key = key_string_lookup_string(ptr);
if (key != KEYC_NONE) {
if (key >= KEYC_BASE)
return (key | KEYC_SHIFT);
} else {
if (ptr[1] == '\0')
return (KEYC_NONE);
key = (u_char) ptr[0];
}
if (key >= 32 && key <= 127)
return (key | KEYC_SHIFT);
return (KEYC_NONE);
}
return (key_string_search_table(string));
}
/* Convert a key code into string format, with prefix if necessary. */
const char *
key_string_lookup_key(int key)
{
static char tmp[24], tmp2[24];
const char *s;
u_int i;
if (key == 127)
return (NULL);
if (key & KEYC_ESCAPE) {
if ((s = key_string_lookup_key(key & ~KEYC_ESCAPE)) == NULL)
return (NULL);
xsnprintf(tmp2, sizeof tmp2, "M-%s", s);
return (tmp2);
}
if (key & KEYC_CTRL) {
if ((s = key_string_lookup_key(key & ~KEYC_CTRL)) == NULL)
return (NULL);
xsnprintf(tmp2, sizeof tmp2, "C-%s", s);
return (tmp2);
}
if (key & KEYC_SHIFT) {
if ((s = key_string_lookup_key(key & ~KEYC_SHIFT)) == NULL)
return (NULL);
xsnprintf(tmp2, sizeof tmp2, "S-%s", s);
return (tmp2);
}
for (i = 0; i < nitems(key_string_table); i++) {
if (key == key_string_table[i].key)
return (key_string_table[i].string);
}
if (key >= 32 && key <= 255) {
tmp[0] = (char) key;
tmp[1] = '\0';
return (tmp);
}
if (key >= 0 && key <= 32) {
if (key == 0 || key > 26)
xsnprintf(tmp, sizeof tmp, "C-%c", 64 + key);
else
xsnprintf(tmp, sizeof tmp, "C-%c", 96 + key);
return (tmp);
}
return (NULL);
}
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