forked from barnowl/barnowl
/
keybinding.c
147 lines (127 loc) · 3.57 KB
/
keybinding.c
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#include <ctype.h>
#include <string.h>
#include "owl.h"
/*
* TODO: Idea for allowing functions to be user-specified ---
* Have function have a context bitmask that says where it
* can be used, and have keymaps also have one, and compare
* the two when setting.
*
*/
/* sets up a new keybinding for a command */
int owl_keybinding_init(owl_keybinding *kb, const char *keyseq, const char *command, void (*function_fn)(void), const char *desc)
{
owl_function_debugmsg("owl_keybinding_init: creating binding for <%s> with desc: <%s>", keyseq, desc);
if (command && !function_fn) {
kb->type = OWL_KEYBINDING_COMMAND;
} else if (!command && function_fn) {
kb->type = OWL_KEYBINDING_FUNCTION;
} else {
return(-1);
}
if (owl_keybinding_make_keys(kb, keyseq) != 0) {
return(-1);
}
if (command) kb->command = g_strdup(command);
kb->function_fn = function_fn;
if (desc) kb->desc = g_strdup(desc);
else kb->desc = NULL;
return(0);
}
int owl_keybinding_make_keys(owl_keybinding *kb, const char *keyseq)
{
char **ktokens;
int nktokens, i;
ktokens = g_strsplit_set(keyseq, " ", 0);
nktokens = g_strv_length(ktokens);
if (nktokens < 1 || nktokens > OWL_KEYMAP_MAXSTACK) {
g_strfreev(ktokens);
return(-1);
}
kb->keys = g_new(int, nktokens);
for (i=0; i<nktokens; i++) {
kb->keys[i] = owl_keypress_fromstring(ktokens[i]);
if (kb->keys[i] == ERR) {
g_strfreev(ktokens);
g_free(kb->keys);
return(-1);
}
}
kb->len = nktokens;
g_strfreev(ktokens);
return(0);
}
/* Releases data associated with a keybinding */
void owl_keybinding_cleanup(owl_keybinding *kb)
{
if (kb->keys) g_free(kb->keys);
if (kb->desc) g_free(kb->desc);
if (kb->command) g_free(kb->command);
}
/* Releases data associated with a keybinding, and the kb itself */
void owl_keybinding_delete(owl_keybinding *kb)
{
owl_keybinding_cleanup(kb);
g_free(kb);
}
/* executes a keybinding */
void owl_keybinding_execute(const owl_keybinding *kb, int j)
{
if (kb->type == OWL_KEYBINDING_COMMAND && kb->command) {
owl_function_command_norv(kb->command);
} else if (kb->type == OWL_KEYBINDING_FUNCTION && kb->function_fn) {
kb->function_fn();
}
}
/* returns 0 on success */
int owl_keybinding_stack_tostring(int *j, int len, char *buff, int bufflen)
{
char *pos = buff;
int rem = bufflen;
int i, n;
for (i=0; i < len; i++) {
owl_keypress_tostring(j[i], 0, pos, rem-1);
if (i < len - 1) strcat(pos, " ");
n = strlen(pos);
pos += n;
rem -= n;
}
return 0;
}
/* returns 0 on success */
int owl_keybinding_tostring(const owl_keybinding *kb, char *buff, int bufflen)
{
return owl_keybinding_stack_tostring(kb->keys, kb->len, buff, bufflen);
}
const char *owl_keybinding_get_desc(const owl_keybinding *kb)
{
return kb->desc;
}
/* returns 0 on no match, 1 on subset match, and 2 on complete match */
int owl_keybinding_match(const owl_keybinding *kb, const owl_keyhandler *kh)
{
int i;
for(i = 0; i <= kh->kpstackpos && i < kb->len; i++) {
if(kb->keys[i] != kh->kpstack[i])
return 0;
}
/* If we've made it to this point, then they match as far as they are. */
if(kb->len == kh->kpstackpos + 1) {
/* Equal length */
return 2;
} else if(kb->len > kh->kpstackpos + 1) {
return 1;
}
return 0;
}
/* returns 1 if keypress sequence is the same */
int owl_keybinding_equal(const owl_keybinding *kb1, const owl_keybinding *kb2)
{
int i;
if(kb1->len != kb2->len) return 0;
for(i = 0; i < kb1->len; i++) {
if(kb1->keys[i] != kb2->keys[i])
return 0;
}
return 1;
}