error handling for freopen()

[smdp.git] / parser.c

diff --git a/parser.c b/parser.c
index 9c5d628..1ff125c 100644 (file)
--- a/parser.c
+++ b/parser.c
@@ -40,6 +40,7 @@ deck_t *markdown_load(FILE *input) {
     deck_t *deck = new_deck();
     slide_t *slide = new_slide();
     line_t *line = NULL;
+    line_t *tmp = NULL;
     cstring_t *text = cstring_init();
 
     // assign first slide to deck
@@ -52,9 +53,15 @@ deck_t *markdown_load(FILE *input) {
             // markdown analyse
             bits = markdown_analyse(text);
 
+            // if first line in file is markdown hr
+            if(!line && CHECK_BIT(bits, IS_HR)) {
+
+                // clear text
+                (text->reset)(text);
+
             // if text is markdown hr
-            if(CHECK_BIT(bits, IS_HR) &&
-               CHECK_BIT(line->bits, IS_EMPTY)) {
+            } else if(CHECK_BIT(bits, IS_HR) &&
+                      CHECK_BIT(line->bits, IS_EMPTY)) {
 
                 slide->lines = lc;
 
@@ -198,7 +205,7 @@ deck_t *markdown_load(FILE *input) {
                 if(line->next)
                     line->next->prev = line->prev;
 
-                // set bits on revious line
+                // set bits on previous line
                 if(CHECK_BIT(line->bits, IS_H1)) {
                     SET_BIT(line->prev->bits, IS_H1);
                 } else {
@@ -208,9 +215,13 @@ deck_t *markdown_load(FILE *input) {
                 // adjust line count
                 slide->lines -= 1;
 
+                // maintain loop condition
+                tmp = line;
+                line = line->prev;
+
                 // delete line
-                (line->text->delete)(line->text);
-                free(line);
+                (tmp->text->delete)(tmp->text);
+                free(tmp);
             }
             line = line->next;
         }