test-keymap-util: use kbd-model-map/language-fallback-map from $(srcdir)

This adds (undocumented) environment variables SYSTEMD_KBD_MODEL_MAP
and SYSTEMD_LANGUAGE_FALLBACK_MAP, which, if set, override compiled-in
locations of those two files.

Instead of skipping tests when the maps are not installed, just use
the one from the source dir. We still cannot do the mappings the other
way if /usr/lib/kbd/keymaps is not present, so truncate the tests in
that case.

Also tweak the debug messages a bit to make it easier to see
which function is failing.

1 files changed, 36 insertions, 7 deletions

diff --git a/src/locale/keymap-util.c b/src/locale/keymap-util.c
index 17bef9e481..a6bcd1ad54 100644
--- a/src/locale/keymap-util.c
+++ b/src/locale/keymap-util.c
@@ -46,6 +46,26 @@ static const char* strnulldash(const char *s) {
         return isempty(s) || streq(s, "-") ? NULL : s;
 }
 
+static const char* systemd_kbd_model_map(void) {
+        const char* s;
+
+        s = getenv("SYSTEMD_KBD_MODEL_MAP");
+        if (s)
+                return s;
+
+        return SYSTEMD_KBD_MODEL_MAP;
+}
+
+static const char* systemd_language_fallback_map(void) {
+        const char* s;
+
+        s = getenv("SYSTEMD_LANGUAGE_FALLBACK_MAP");
+        if (s)
+                return s;
+
+        return SYSTEMD_LANGUAGE_FALLBACK_MAP;
+}
+
 static void context_free_x11(Context *c) {
         c->x11_layout = mfree(c->x11_layout);
         c->x11_options = mfree(c->x11_options);
@@ -427,8 +447,11 @@ static int read_next_mapping(const char* filename,
 }
 
 int vconsole_convert_to_x11(Context *c) {
+        const char *map;
         int modified = -1;
 
+        map = systemd_kbd_model_map();
+
         if (isempty(c->vc_keymap)) {
                 modified =
                         !isempty(c->x11_layout) ||
@@ -441,7 +464,7 @@ int vconsole_convert_to_x11(Context *c) {
                 _cleanup_fclose_ FILE *f = NULL;
                 unsigned n = 0;
 
-                f = fopen(SYSTEMD_KBD_MODEL_MAP, "re");
+                f = fopen(map, "re");
                 if (!f)
                         return -errno;
 
@@ -449,7 +472,7 @@ int vconsole_convert_to_x11(Context *c) {
                         _cleanup_strv_free_ char **a = NULL;
                         int r;
 
-                        r = read_next_mapping(SYSTEMD_KBD_MODEL_MAP, 5, UINT_MAX, f, &n, &a);
+                        r = read_next_mapping(map, 5, UINT_MAX, f, &n, &a);
                         if (r < 0)
                                 return r;
                         if (r == 0)
@@ -526,14 +549,17 @@ int find_converted_keymap(const char *x11_layout, const char *x11_variant, char
 }
 
 int find_legacy_keymap(Context *c, char **new_keymap) {
-        _cleanup_fclose_ FILE *f;
+        const char *map;
+        _cleanup_fclose_ FILE *f = NULL;
         unsigned n = 0;
         unsigned best_matching = 0;
         int r;
 
         assert(!isempty(c->x11_layout));
 
-        f = fopen(SYSTEMD_KBD_MODEL_MAP, "re");
+        map = systemd_kbd_model_map();
+
+        f = fopen(map, "re");
         if (!f)
                 return -errno;
 
@@ -541,7 +567,7 @@ int find_legacy_keymap(Context *c, char **new_keymap) {
                 _cleanup_strv_free_ char **a = NULL;
                 unsigned matching = 0;
 
-                r = read_next_mapping(SYSTEMD_KBD_MODEL_MAP, 5, UINT_MAX, f, &n, &a);
+                r = read_next_mapping(map, 5, UINT_MAX, f, &n, &a);
                 if (r < 0)
                         return r;
                 if (r == 0)
@@ -619,13 +645,16 @@ int find_legacy_keymap(Context *c, char **new_keymap) {
 }
 
 int find_language_fallback(const char *lang, char **language) {
+        const char *map;
         _cleanup_fclose_ FILE *f = NULL;
         unsigned n = 0;
 
         assert(lang);
         assert(language);
 
-        f = fopen(SYSTEMD_LANGUAGE_FALLBACK_MAP, "re");
+        map = systemd_language_fallback_map();
+
+        f = fopen(map, "re");
         if (!f)
                 return -errno;
 
@@ -633,7 +662,7 @@ int find_language_fallback(const char *lang, char **language) {
                 _cleanup_strv_free_ char **a = NULL;
                 int r;
 
-                r = read_next_mapping(SYSTEMD_LANGUAGE_FALLBACK_MAP, 2, 2, f, &n, &a);
+                r = read_next_mapping(map, 2, 2, f, &n, &a);
                 if (r <= 0)
                         return r;