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src/menu: slight clean up of menu accelerators

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Slight clean up of the accelerator implementation, including use of glib for utf8-parsing
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Alex Chernika 2026-05-08 20:35:40 +02:00 • committed by GitHub
parent d86b2cfd0d
commit e2f3c03287
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GPG key ID: B5690EEEBB952194
1 changed files with 38 additions and 38 deletions
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76
src/menu/menu.c
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@ -4,14 +4,12 @@
#include <assert.h>
#include <ctype.h>
#include <libxml/parser.h>
#include <locale.h>
#include <signal.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <uchar.h>
#include <unistd.h>
#include <wctype.h>
#include <wlr/types/wlr_scene.h>
#include <wlr/types/wlr_xdg_shell.h>
#include <wlr/util/log.h>
@ -133,42 +131,33 @@ validate(void)
}
}
/* Read a single Unicode codepoint and convert it to lowercase */
static uint32_t
get_unicode_char(const char *first_byte, size_t *out_bytes)
read_unicode_char_lowercase(const char *first_byte, size_t *bytes_read)
{
if (!first_byte || first_byte[0] == '\0') {
*out_bytes = 0;
assert(bytes_read);
if (string_null_or_empty(first_byte)) {
*bytes_read = 0;
return 0;
}
/* Temporarily set locale to UTF-8 */
locale_t utf8_locale = newlocale(LC_CTYPE_MASK, "C.UTF-8", (locale_t)0);
locale_t old_locale = (locale_t)0;
if (utf8_locale != (locale_t)0) {
old_locale = uselocale(utf8_locale);
gunichar codepoint = g_utf8_get_char_validated(first_byte, -1);
bool partial_read = (codepoint == (gunichar)-2);
bool failed_read = (codepoint == (gunichar)-1);
if (partial_read || failed_read) {
/* Read only the first byte */
*bytes_read = 1;
return (uint32_t)(unsigned char)first_byte[0];
}
uint32_t result = 0;
char32_t codepoint = 0;
mbstate_t state = {0};
size_t bytes = mbrtoc32(&codepoint, first_byte, 4, &state);
if (bytes > 0 && bytes <= 4) {
*out_bytes = bytes;
result = (uint32_t)towlower((wint_t)codepoint);
} else {
*out_bytes = 1;
result = (uint32_t)(unsigned char)first_byte[0];
}
*bytes_read = (size_t)(g_utf8_next_char(first_byte) - first_byte);
/* Restore previous locale */
if (utf8_locale != (locale_t)0) {
uselocale(old_locale);
freelocale(utf8_locale);
}
return result;
return (uint32_t)g_unichar_tolower(codepoint);
}
/* Retrieve the accelerator from an item label */
static void
item_parse_accelerator(struct menuitem *item, const char *text)
{
@ -188,25 +177,35 @@ item_parse_accelerator(struct menuitem *item, const char *text)
}
}
size_t bytes = 0;
size_t bytes_read = 0;
if (!accel_ptr) {
/* Default to the first char */
item->text = xstrdup(text);
item->accelerator = get_unicode_char(text, &bytes);
item->accelerator = read_unicode_char_lowercase(text, &bytes_read);
} else {
/* Set the accelerator and remove the preceding underscore */
item->use_markup = true;
item->accelerator = get_unicode_char(accel_ptr, &bytes);
item->accelerator = read_unicode_char_lowercase(accel_ptr, &bytes_read);
item->text = strdup_printf("%.*s<u>%.*s</u>%s",
/* Prefix length + prefix */
(int)(accel_ptr - 1 - text), text,
/* Accelerator (utf-8 byte) length + accelerator */
(int)bytes, accel_ptr,
(int)bytes_read, accel_ptr,
/* Remainder */
accel_ptr + bytes);
accel_ptr + bytes_read);
}
}
/* Remove underscores used for escaping other underscores from a string */
static void
unescape_underscores(char *text)
{
if (!text) {
return;
}
/* Remove undescores used for escaping */
char *src = item->text;
char *dst = item->text;
char *src = text;
char *dst = text;
while (*src) {
if (*src == '_' && *(src + 1) == '_') {
*dst++ = '_';
@ -231,6 +230,7 @@ item_create(struct menu *menu, const char *text, const char *icon_name, bool sho
menuitem->type = LAB_MENU_ITEM;
menuitem->arrow = show_arrow ? "›" : NULL;
item_parse_accelerator(menuitem, text);
unescape_underscores(menuitem->text);
#if HAVE_LIBSFDO
if (rc.menu_show_icons && !string_null_or_empty(icon_name)) {
@ -1595,7 +1595,7 @@ menu_item_select_by_accelerator(uint32_t accelerator)
menu_process_item_selection(next_selection);
if (needs_exec && next_selection->submenu) {
/* Since we can't execute a submenu, enter it. */
/* Since we can't execute a submenu, enter it */
needs_exec = false;
menu_submenu_enter();
}