blogc: added filelist parser

2 files changed, 85 insertions, 0 deletions

diff --git a/src/blogc/filelist-parser.c b/src/blogc/filelist-parser.c
new file mode 100644
index 0000000..ac9c50a
--- /dev/null
+++ b/src/blogc/filelist-parser.c
@@ -0,0 +1,69 @@
+/*
+ * blogc: A blog compiler.
+ * Copyright (C) 2014-2019 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ *
+ * This program can be distributed under the terms of the BSD License.
+ * See the file LICENSE.
+ */
+
+#include "../common/utils.h"
+
+
+typedef enum {
+    LINE_START = 1,
+    LINE,
+} blogc_filelist_parser_state_t;
+
+
+bc_slist_t*
+blogc_filelist_parse(const char *src, size_t src_len)
+{
+    size_t current = 0;
+    size_t start = 0;
+    bc_slist_t *rv = NULL;
+    bc_string_t *line = bc_string_new();
+    blogc_filelist_parser_state_t state = LINE_START;
+
+    while (current < src_len) {
+        char c = src[current];
+        bool is_last = current == src_len - 1;
+
+        switch (state) {
+
+            case LINE_START:
+                if (c == '#') {
+                    while (current < src_len) {
+                        if (src[current] == '\r' || src[current] == '\n')
+                            break;
+                        current++;
+                    }
+                    break;
+                }
+                if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
+                    break;
+                start = current;
+                state = LINE;
+                continue;
+
+            case LINE:
+                if (c == '\r' || c == '\n' || is_last) {
+                    if (is_last && c != '\r' && c != '\n')
+                        bc_string_append_c(line, c);
+                    rv = bc_slist_append(rv, bc_str_strip(line->str));
+                    bc_string_free(line, false);
+                    line = bc_string_new();
+                    state = LINE_START;
+                    break;
+                }
+                bc_string_append_c(line, c);
+                break;
+
+        }
+
+        current++;
+    }
+
+    bc_string_free(line, true);
+
+    return rv;
+}
diff --git a/src/blogc/filelist-parser.h b/src/blogc/filelist-parser.h
new file mode 100644
index 0000000..5c65ee0
--- /dev/null
+++ b/src/blogc/filelist-parser.h
@@ -0,0 +1,16 @@
+/*
+ * blogc: A blog compiler.
+ * Copyright (C) 2014-2019 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ *
+ * This program can be distributed under the terms of the BSD License.
+ * See the file LICENSE.
+ */
+
+#ifndef _FILELIST_PARSER_H
+#define _FILELIST_PARSER_H
+
+#include "../common/utils.h"
+
+bc_slist_t* blogc_filelist_parse(const char *src, size_t src_len);
+
+#endif /* _FILELIST_PARSER_H */