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xcursor: support XDG Base Directory Specification

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This patch adds ~/.local/share/icons to the search path, so user-specific
themes can be loaded through the API provided by libwayland-cursor.

Use this PR as reference:
https://gitlab.freedesktop.org/wayland/wayland/-/merge_requests/112
This commit is contained in:
Moon Sungjoon 2022-03-06 00:33:28 +09:00 committed by Simon Ser
parent f330759ba4
commit 2dd121235e
1 changed files with 38 additions and 13 deletions
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51
xcursor/xcursor.c
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@ -622,18 +622,43 @@ XcursorFileLoadImages (FILE *file, int size)
#define XCURSORPATH "~/.local/share/icons:~/.icons:/usr/share/icons:/usr/share/pixmaps:~/.cursors:/usr/share/cursors/xorg-x11:"ICONDIR
#endif
static const char *
#define XDG_DATA_HOME_FALLBACK "~/.local/share"
#define CURSORDIR "/icons"
/** Get search path for cursor themes
*
* This function builds the list of directories to look for cursor
* themes in. The format is PATH-like: directories are separated by
* colons.
*
* The memory block returned by this function is allocated on the heap
* and must be freed by the caller.
*/
static char *
XcursorLibraryPath (void)
{
static const char *path;
const char *env_var;
char *path = NULL;
int pathlen = 0;
if (!path)
{
path = getenv ("XCURSOR_PATH");
if (!path)
path = XCURSORPATH;
}
return path;
env_var = getenv("XCURSOR_PATH");
if (env_var) {
path = strdup(env_var);
}
else {
env_var = getenv("XDG_DATA_HOME");
if (env_var) {
pathlen = strlen(env_var) +
strlen(CURSORDIR ":" XCURSORPATH) + 1;
path = malloc(pathlen);
snprintf(path, pathlen, "%s%s", env_var,
CURSORDIR ":" XCURSORPATH);
}
else {
path = strdup(XDG_DATA_HOME_FALLBACK ":" XCURSORPATH);
}
}
return path;
}
static void
@ -866,14 +891,13 @@ xcursor_load_theme(const char *theme, int size,
{
char *full, *dir;
char *inherits = NULL;
char *xcursor_path = NULL;
const char *path, *i;
if (!theme)
theme = "default";
for (path = XcursorLibraryPath();
path;
path = _XcursorNextPath(path)) {
xcursor_path = XcursorLibraryPath();
for (path = xcursor_path; path; path = _XcursorNextPath(path)) {
dir = _XcursorBuildThemeDir(path, theme);
if (!dir)
continue;
@ -902,4 +926,5 @@ xcursor_load_theme(const char *theme, int size,
if (inherits)
free(inherits);
free(xcursor_path);
}