make: pass TAG_CLOUD variable to blogc.

this variable includes all the tags configured in blogcfile(5) as a
space-separated string.

3 files changed, 56 insertions, 1 deletions

diff --git a/man/blogcfile.5.ronn b/man/blogcfile.5.ronn
index 4fe3de8..f93d0af 100644
--- a/man/blogcfile.5.ronn
+++ b/man/blogcfile.5.ronn
@@ -136,6 +136,10 @@ The `[tags]` section is a listing of the tags that should be listed in the
 website. blogc-make(1) will generate post listing indexes and Atom feeds for
 each tag listed in the section.
 
+The tags will be also provided to blogc as a `TAG_CLOUD` variable, that is a
+space-separated list of the tags, useful to generate tag clouds using the
+`foreach` template iterator. See blogc-template(7).
+
 ### Copy listing
 
 The `[copy]` section is a listing of the files that should be copied to the
@@ -180,4 +184,4 @@ Rafael G. Martins &lt;<rafael@rafaelmartins.eng.br>&gt;
 
 ## SEE ALSO
 
-blogc(1), blogc-make(1), strftime(3)
+blogc(1), blogc-make(1), blogc-template(7) strftime(3)
diff --git a/src/blogc-make/exec.c b/src/blogc-make/exec.c
index 551c7d7..a324d47 100644
--- a/src/blogc-make/exec.c
+++ b/src/blogc-make/exec.c
@@ -235,6 +235,12 @@ bm_exec_build_blogc_cmd(const char *blogc_bin, bm_settings_t *settings,
     bc_string_append(rv, blogc_bin);
 
     if (settings != NULL) {
+        if (settings->tags != NULL) {
+            char *tags = bc_strv_join(settings->tags, " ");
+            bc_string_append_printf(rv, " -D TAG_CLOUD='%s'", tags);
+            free(tags);
+        }
+
         bc_trie_foreach(settings->global,
             (bc_trie_foreach_func_t) list_variables, rv);
     }
diff --git a/tests/blogc-make/check_exec.c b/tests/blogc-make/check_exec.c
index e0c9931..a6cec3e 100644
--- a/tests/blogc-make/check_exec.c
+++ b/tests/blogc-make/check_exec.c
@@ -83,6 +83,7 @@ test_build_blogc_cmd_with_settings(void **state)
     bc_trie_insert(settings->global, "BAR", bc_strdup("BAZ"));
     bc_trie_t *variables = bc_trie_new(free);
     bc_trie_insert(variables, "LOL", bc_strdup("HEHE"));
+    settings->tags = NULL;
 
     char *rv = bm_exec_build_blogc_cmd("blogc", settings, variables, true,
         "main.tmpl", "foo.html", false, true);
@@ -121,6 +122,7 @@ test_build_blogc_cmd_with_settings_and_dev(void **state)
     bc_trie_insert(settings->global, "BAR", bc_strdup("BAZ"));
     bc_trie_t *variables = bc_trie_new(free);
     bc_trie_insert(variables, "LOL", bc_strdup("HEHE"));
+    settings->tags = NULL;
 
     char *rv = bm_exec_build_blogc_cmd("blogc", settings, variables, true,
         "main.tmpl", "foo.html", true, true);
@@ -151,6 +153,48 @@ test_build_blogc_cmd_with_settings_and_dev(void **state)
 
 
 static void
+test_build_blogc_cmd_with_settings_and_tags(void **state)
+{
+    bm_settings_t *settings = bc_malloc(sizeof(bm_settings_t));
+    settings->settings = bc_trie_new(free);
+    bc_trie_insert(settings->settings, "locale", bc_strdup("en_US.utf8"));
+    settings->global = bc_trie_new(free);
+    bc_trie_insert(settings->global, "FOO", bc_strdup("BAR"));
+    bc_trie_insert(settings->global, "BAR", bc_strdup("BAZ"));
+    bc_trie_t *variables = bc_trie_new(free);
+    bc_trie_insert(variables, "LOL", bc_strdup("HEHE"));
+    settings->tags = bc_str_split("asd foo bar", ' ', 0);
+
+    char *rv = bm_exec_build_blogc_cmd("blogc", settings, variables, true,
+        "main.tmpl", "foo.html", true, true);
+    assert_string_equal(rv,
+        "LC_ALL='en_US.utf8' blogc -D TAG_CLOUD='asd foo bar' -D FOO='BAR' "
+        "-D BAR='BAZ' -D LOL='HEHE' -D MAKE_ENV_DEV=1 -D MAKE_ENV='dev' -l -t "
+        "'main.tmpl' -o 'foo.html' -i");
+    free(rv);
+
+    rv = bm_exec_build_blogc_cmd("blogc", settings, variables, false, NULL, NULL,
+        true, false);
+    assert_string_equal(rv,
+        "LC_ALL='en_US.utf8' blogc -D TAG_CLOUD='asd foo bar' -D FOO='BAR' "
+        "-D BAR='BAZ' -D LOL='HEHE' -D MAKE_ENV_DEV=1 -D MAKE_ENV='dev'");
+    free(rv);
+
+    rv = bm_exec_build_blogc_cmd("blogc", settings, NULL, false, NULL, NULL,
+        true, false);
+    assert_string_equal(rv,
+        "LC_ALL='en_US.utf8' blogc -D TAG_CLOUD='asd foo bar' -D FOO='BAR' "
+        "-D BAR='BAZ' -D MAKE_ENV_DEV=1 -D MAKE_ENV='dev'");
+    free(rv);
+
+    bc_trie_free(variables);
+    bc_trie_free(settings->settings);
+    bc_trie_free(settings->global);
+    free(settings);
+}
+
+
+static void
 test_build_blogc_cmd_without_settings(void **state)
 {
     bc_trie_t *variables = bc_trie_new(free);
@@ -187,6 +231,7 @@ main(void)
 #endif
         unit_test(test_build_blogc_cmd_with_settings),
         unit_test(test_build_blogc_cmd_with_settings_and_dev),
+        unit_test(test_build_blogc_cmd_with_settings_and_tags),
         unit_test(test_build_blogc_cmd_without_settings),
     };
     return run_tests(tests);