1 files changed, 175 insertions, 0 deletions
diff --git a/src/blogc-make/settings.c b/src/blogc-make/settings.c
new file mode 100644
index 0000000..e2789dc
--- /dev/null
+++ b/src/blogc-make/settings.c
@@ -0,0 +1,175 @@
+/*
+ * blogc: A blog compiler.
+ * Copyright (C) 2016 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ *
+ * This program can be distributed under the terms of the BSD License.
+ * See the file LICENSE.
+ */
+
+#include <libgen.h>
+#include <stdlib.h>
+#include "../common/config-parser.h"
+#include "../common/error.h"
+#include "../common/file.h"
+#include "../common/utils.h"
+#include "settings.h"
+
+
+static const struct default_settings_map {
+    const char *key;
+    const char *default_value;
+} default_settings[] = {
+
+    // source
+    {"content_dir", "content"},
+    {"template_dir", "templates"},
+    {"main_template", "main.tmpl"},
+    {"source_ext", ".txt"},
+
+    // output
+    {"output_dir", "_build"},
+
+    // pagination
+    {"pagination_prefix", "page"},
+    {"posts_per_page", "10"},
+    {"atom_posts_per_page", "10"},
+
+    // html
+    {"html_ext", "/index.html"},
+    {"index_prefix", NULL},
+    {"post_prefix", "post"},
+    {"tag_prefix", "tag"},
+
+    // atom
+    {"atom_prefix", "atom"},
+    {"atom_ext", ".xml"},
+
+    // generic
+    {"date_format", "%b %d, %Y, %I:%M %p GMT"},
+    {"locale", NULL},
+
+    {NULL, NULL},
+};
+
+
+static const char* required_environment[] = {
+    "AUTHOR_NAME",
+    "AUTHOR_EMAIL",
+    "SITE_TITLE",
+    "SITE_TAGLINE",
+    "BASE_DOMAIN",
+    NULL,
+};
+
+
+static const char* list_sections[] = {
+    "posts",
+    "pages",
+    "copy_files",
+    "tags",
+    NULL,
+};
+
+
+bm_settings_t*
+bm_settings_parse(const char *content, size_t content_len, bc_error_t **err)
+{
+    if (err == NULL || *err != NULL)
+        return NULL;
+
+    if (content == NULL)
+        return NULL;
+
+    bc_config_t *config = bc_config_parse(content, content_len, list_sections,
+        err);
+    if (config == NULL || (err != NULL && *err != NULL))
+        return NULL;
+
+    bm_settings_t *rv = bc_malloc(sizeof(bm_settings_t));
+    rv->root_dir = NULL;
+    rv->env = bc_trie_new(free);
+    rv->settings = bc_trie_new(free);
+    rv->posts = NULL;
+    rv->pages = NULL;
+    rv->copy_files = NULL;
+    rv->tags = NULL;
+
+    char **env = bc_config_list_keys(config, "environment");
+    if (env != NULL) {
+        for (size_t i = 0; env[i] != NULL; i++) {
+            // FIXME: validate keys
+            bc_trie_insert(rv->env, env[i],
+                bc_strdup(bc_config_get(config, "environment", env[i])));
+        }
+    }
+    bc_strv_free(env);
+
+    for (size_t i = 0; required_environment[i] != NULL; i++) {
+        const char *value = bc_trie_lookup(rv->env, required_environment[i]);
+        if (value == NULL || value[0] == '\0') {
+            *err = bc_error_new_printf(BLOGC_MAKE_ERROR_SETTINGS,
+                "[environment] key required but not found or empty: %s",
+                required_environment[i]);
+            bm_settings_free(rv);
+            rv = NULL;
+            goto cleanup;
+        }
+    }
+
+    for (size_t i = 0; default_settings[i].key != NULL; i++) {
+        const char *value = bc_config_get_with_default(
+            config, "settings", default_settings[i].key,
+            default_settings[i].default_value);
+        if (value != NULL) {
+            bc_trie_insert(rv->settings, default_settings[i].key,
+                bc_strdup(value));
+        }
+    }
+
+    rv->posts = bc_config_get_list(config, "posts");
+    rv->pages = bc_config_get_list(config, "pages");
+    rv->copy_files = bc_config_get_list(config, "copy_files");
+    rv->tags = bc_config_get_list(config, "tags");
+
+cleanup:
+
+    bc_config_free(config);
+
+    return rv;
+}
+
+
+bm_settings_t*
+bm_settings_parse_file(const char *filename, bc_error_t **err)
+{
+    if (err == NULL || *err != NULL)
+        return NULL;
+
+    size_t content_len;
+    char *content = bc_file_get_contents(filename, true, &content_len, err);
+    if (*err != NULL)
+        return NULL;
+
+    bm_settings_t *rv = bm_settings_parse(content, content_len, err);
+    char *real_filename = realpath(filename, NULL);
+    rv->root_dir = bc_strdup(dirname(real_filename));
+    free(real_filename);
+    free(content);
+    return rv;
+}
+
+
+void
+bm_settings_free(bm_settings_t *settings)
+{
+    if (settings == NULL)
+        return;
+    free(settings->root_dir);
+    bc_trie_free(settings->env);
+    bc_trie_free(settings->settings);
+    bc_strv_free(settings->posts);
+    bc_strv_free(settings->pages);
+    bc_strv_free(settings->copy_files);
+    bc_strv_free(settings->tags);
+    free(settings);
+}