3 files changed, 54 insertions, 0 deletions
diff --git a/src/loader.c b/src/loader.c
index 7eefa77..485fb0d 100644
--- a/src/loader.c
+++ b/src/loader.c
@@ -49,6 +49,42 @@ blogc_file_get_contents(const char *path, size_t *len, blogc_error_t **err)
 }
 
 
+char*
+blogc_get_filename(const char *f)
+{
+    if (f == NULL)
+        return NULL;
+
+    if (strlen(f) == 0)
+        return NULL;
+
+    // keep a pointer to original string
+    char *filename = b_strdup(f);
+    char *tmp = filename;
+
+    bool removed_dot = false;
+    for (int i = strlen(tmp); i >= 0 ; i--) {
+
+        // remove last extension
+        if (!removed_dot && tmp[i] == '.') {
+            tmp[i] = '\0';
+            removed_dot = true;
+            continue;
+        }
+
+        if (tmp[i] == '/' || tmp[i] == '\\') {
+            tmp += i + 1;
+            break;
+        }
+    }
+
+    char *final_filename = b_strdup(tmp);
+    free(filename);
+
+    return final_filename;
+}
+
+
 b_slist_t*
 blogc_template_parse_from_file(const char *f, blogc_error_t **err)
 {
@@ -74,6 +110,14 @@ blogc_source_parse_from_file(const char *f, blogc_error_t **err)
     if (s == NULL)
         return NULL;
     b_trie_t *rv = blogc_source_parse(s, len, err);
+
+    // set FILENAME variable
+    if (rv != NULL) {
+        char *filename = blogc_get_filename(f);
+        if (filename != NULL)
+            b_trie_insert(rv, "FILENAME", filename);
+    }
+
     free(s);
     return rv;
 }
diff --git a/src/loader.h b/src/loader.h
index f1e416e..6407d0d 100644
--- a/src/loader.h
+++ b/src/loader.h
@@ -15,6 +15,7 @@
 #define BLOGC_FILE_CHUNK_SIZE 1024
 
 char* blogc_file_get_contents(const char *path, size_t *len, blogc_error_t **err);
+char* blogc_get_filename(const char *f);
 b_slist_t* blogc_template_parse_from_file(const char *f, blogc_error_t **err);
 b_trie_t* blogc_source_parse_from_file(const char *f, blogc_error_t **err);
 b_slist_t* blogc_source_parse_from_files(b_slist_t *l, blogc_error_t **err);
diff --git a/src/source-parser.c b/src/source-parser.c
index b6b7fd0..322906f 100644
--- a/src/source-parser.c
+++ b/src/source-parser.c
@@ -11,6 +11,7 @@
 #endif /* HAVE_CONFIG_H */
 
 #include <stdbool.h>
+#include <string.h>
 
 #include "utils/utils.h"
 #include "source-parser.h"
@@ -70,6 +71,14 @@ blogc_source_parse(const char *src, size_t src_len, blogc_error_t **err)
                     break;
                 if (c == ':') {
                     key = b_strndup(src + start, current - start);
+                    if ((0 == strncmp("FILENAME", src + start, current - start)) ||
+                        (0 == strncmp("CONTENT", src + start, current - start)))
+                    {
+                        *err = blogc_error_new_printf(BLOGC_ERROR_SOURCE_PARSER,
+                            "'%s' variable is forbidden in source files. It will "
+                            "be set for you by the compiler.", key);
+                        break;
+                    }
                     state = SOURCE_CONFIG_VALUE_START;
                     break;
                 }