Use XDG_CACHE_HOME.

contrib/gtktheme/jgmenu-gtktheme.py

@@ -56,9 +56,11 @@ def process_line(line):
         setconfig("color_title_border", rgb2hex(line))
 
 def cache(themename):
-    """ save the theme-name to ~/.cache/jgmenu/.last-gtktheme """
+    """ save the theme-name to XDG_CACHE_HOME/jgmenu/.last-gtktheme or 
+        ~/.cache/jgmenu/.last-gtktheme if it doesn't exist """
     print("themename={}".format(themename))
-    directory = os.environ["HOME"] + "/.cache/jgmenu"
+    home = os.environ["HOME"]
+    directory = os.getenv("XDG_CACHE_HOME", home + "/.cache") + "/jgmenu"
     if not os.path.exists(directory):
         os.mkdir(directory)
     f = open(directory + "/.last-gtktheme", "w")

docs/notes_on_icons

@@ -7,7 +7,9 @@ The main loop kicks off two threads to load icons,
 This allows the root-menu to be displayed quickly whilst the rest is loaded in
 the background.
 
-When jgmenu if first run, icon 'cache' is created at '~/.cache/jgmenu/icons/'.
+When jgmenu if first run, icon 'cache' is created in the path specified in the 
+XDG_CACHE_HOME environment variable. If this variable is unset, it default back 
+on '~/.cache/jgmenu/icons/'.
 The cache consists of symlinks pointing to icons which match the name, size and
 theme. For example: folder -> /usr/share/icons/Adwaita/22x22/places/folder.png
 

src/cache.c

@@ -10,7 +10,7 @@
 #include "util.h"
 #include "banned.h"
 
-#define CACHE_LOCATION "~/.cache/jgmenu/icons"
+#define DEFAULT_CACHE_LOCATION "~/.cache"
 static struct sbuf *cache_location;
 
 static struct sbuf icon_theme;
@@ -110,6 +110,23 @@ static int cache_check_index_theme(const char *theme, int size)
 	return ret;
 }
 
+static void cache_get_dir(void)
+{
+	const char *xdg_cache_home = getenv("XDG_CACHE_HOME");
+
+	if (xdg_cache_home && *xdg_cache_home)
+		sbuf_addstr(cache_location, xdg_cache_home);
+	else
+		sbuf_addstr(cache_location, DEFAULT_CACHE_LOCATION);
+	sbuf_addstr(cache_location, "/jgmenu/icons");
+	sbuf_expand_tilde(cache_location);
+}
+
+char *cache_icon_get_dir(void)
+{
+	return cache_location->buf;
+}
+
 static void cache_delete(void)
 {
 	char cmd[512];
@@ -136,11 +153,10 @@ static void cache_init(void)
 		die("cache.c: icon_{theme,size} needs to be set");
 	cache_location = xmalloc(sizeof(struct sbuf));
 	sbuf_init(cache_location);
-	sbuf_cpy(cache_location, CACHE_LOCATION);
-	sbuf_expand_tilde(cache_location);
+	cache_get_dir();
 	if (cache_check_index_theme(icon_theme.buf, icon_size) < 0) {
 		cache_delete();
-		mkdir_p(CACHE_LOCATION);
+		mkdir_p(cache_location->buf);
 		cache_create_index_theme(icon_theme.buf, icon_size);
 	}
 	first_run = 0;

src/cache.h

@@ -5,6 +5,7 @@
 
 void cache_set_icon_theme(const char *theme);
 void cache_set_icon_size(int size);
+char *cache_icon_get_dir(void);
 int cache_touch(const char *name);
 int cache_strdup_path(const char *name, struct sbuf *path);
 int cache_create_symlink(char *path, char *name);

src/icon.c

@@ -23,7 +23,6 @@
 #include "xpm-loader.h"
 #include "cache.h"
 #include "config.h"
-#include "icon.h"
 #include "banned.h"
 
 #define DEBUG_THEMES 0
@@ -225,7 +224,7 @@ void icon_load(void)
 		}
 	}
 	if (nr_symlinks)
-		fprintf(stderr, "info: created %d symlinks in ~/.cache/jgmenu/icons/\n", nr_symlinks);
+		fprintf(stderr, "info: created %d symlinks in %s\n", nr_symlinks, cache_icon_get_dir());
 	list_for_each_entry_safe(path, tmp_path, &icon_paths, list) {
 		free(path->name.buf);
 		free(path->path.buf);

src/jgmenu-init.sh

@@ -285,8 +285,14 @@ unicode files are not XDG compliant and may give unpredicted results"
 }
 
 icon_theme_last_used_by_jgmenu () {
-	icon_theme=$(grep -i 'Inherits' ~/.cache/jgmenu/icons/index.theme)
-	icon_size=$(grep -i 'Size' ~/.cache/jgmenu/icons/index.theme)
+	if [ -d "$XDG_CACHE_HOME" ]
+	then
+		icon_theme=$(grep -i 'Inherits' $XDG_CACHE_HOME/jgmenu/icons/index.theme)
+		icon_size=$(grep -i 'Size' $XDG_CACHE_HOME/jgmenu/icons/index.theme)
+	else
+		icon_theme=$(grep -i 'Inherits' ~/.cache/jgmenu/icons/index.theme)
+		icon_size=$(grep -i 'Size' ~/.cache/jgmenu/icons/index.theme)
+	fi
 	printf 'last time, icon-theme %s-%s was used\n' "${icon_theme#Inherits=}" \
 		"${icon_size#Size=}"
 }

tests/t1201-lx.t

@@ -62,7 +62,12 @@ test_menu () {
 	printf "%b\n" "XDG_DATA_DIRS=$XDG_DATA_DIRS"
 	export XDG_MENU_PREFIX="${1}-"
 
-	rm -rf ~/.cache/menus &&
+	if [ -d "$XDG_CACHE_HOME" ]
+	then
+		rm -rf $XDG_CACHE_HOME/menus
+	else
+		rm -rf ~/.cache/menus
+	fi
 	cp "../t1201/${1}.expect" expect &&
 	LANG=C LC_ALL=C ../../contrib/lx/jgmenu-lx >actual &&
 	cp "../t1201/${1}.expect" expect &&