From: Michael Göhler <somebody.here@gmx.de>
Date: Sat, 16 Aug 2014 15:39:48 +0000 (+0200)
Subject: draft parsing markdown file into objects
X-Git-Url: https://git.danieliu.xyz/?a=commitdiff_plain;h=ab8e567cda085c6cc575082d175790617a3f9fa6;p=smdp.git

draft parsing markdown file into objects
yeah, it compiles! :)
---

diff --git a/include/markdown.h b/include/markdown.h
index b4812f5..9ed9dbf 100644
--- a/include/markdown.h
+++ b/include/markdown.h
@@ -73,4 +73,8 @@ document_t *new_document() {
     return x;
 }
 
+int is_utf8(char ch);
+int next_nonblank(cstring_t *text, int i);
+document_t * markdown_load(FILE *input);
+
 #endif // !defined( MARKDOWN_H )
diff --git a/markdown.c b/markdown.c
new file mode 100644
index 0000000..62aca6f
--- /dev/null
+++ b/markdown.c
@@ -0,0 +1,132 @@
+// needed by tmp.c to process markdown
+
+#include <stdio.h>
+
+#include "include/markdown.h"
+
+document_t * markdown_load(FILE *input) {
+
+    int c, i, bits;
+
+    document_t *doc;
+    page_t *page;
+    line_t *line;
+    cstring_t *text;
+
+    doc = new_document();
+    page = new_page();
+    doc->page = page;
+    text = cstring_init();
+
+    while ((c = fgetc(input)) != EOF) {
+        if(c == '\n') {
+
+            // markdown analyse
+            bits = markdown_analyse(text);
+
+            // if text is markdown hr
+            if(CHECK_BIT(bits, IS_HR)) {
+
+                // clear text
+                (text->reset)(text);
+                // create next page
+                page = next_page(page);
+
+            } else {
+
+                // if page ! has line
+                if(!page->line) {
+
+                    // create new line
+                    line = new_line();
+                    page->line = line;
+
+                } else {
+
+                    // create next line
+                    line = next_line(line);
+
+                }
+
+                // add text to line
+                line->text = text;
+
+                // add bits to line
+                line->bits = bits;
+
+                // calc offset
+                line->offset = next_nonblank(text, 0);
+            }
+
+        } else if('\t') {
+
+            // expand tab to spaces
+            for (i = 0;  i <= 4;  i++)
+                (text->expand)(text, ' ');
+
+        } else if(isprint(c) || isspace(c) || is_utf8(c)) {
+
+            // add char to line
+            (text->expand)(text, c);
+        }
+    }
+
+    //TODO detect header
+
+    return doc;
+}
+
+int markdown_analyse(cstring_t *text) {
+    int c, i, bits,
+        offset, eol,
+        equals, hashes, stars, minus, plus,
+        spaces, other;
+
+    // count leading spaces
+    offset = next_nonblank(text, 0);
+
+    // IS_CODE
+    if(offset >= 4) {
+        SET_BIT(bits, IS_CODE);
+        return bits;
+    }
+
+    // strip trailing spaces
+    for(eol = text->size; eol > offset && isspace(text->text[eol - 1]); eol--);
+
+    for(i = offset; i < eol; i++) {
+
+        switch(text->text[i]) {
+            case '=': equals++; break;
+            case '#': hashes++; break;
+            case '*': stars++; break;
+            case '-': minus++; break;
+            case '+': plus++; break;
+            case ' ': spaces++; break;
+            default: other++; break;
+        }
+    }
+
+    // IS_HR
+    if((minus >= 3 && equals + hashes + stars + plus == 0) ||
+       (stars >= 3 && equals + hashes + minus + plus == 0)) {
+
+        SET_BIT(bits, IS_HR);
+        return bits;
+    }
+
+    //TODO all the other markdown tags
+
+    return bits;
+}
+
+int is_utf8(char ch) {
+    return (ch & 0x80);
+}
+
+int next_nonblank(cstring_t *text, int i) {
+    while ((i < text->size) && isspace((text->text)[i]))
+        ++i;
+    return i;
+};
+