Factored out common bits of rendering into separate render module.

* Added render.c, render.h.
* Moved common functions and definitions from latex.c and commonmark.c
  to render.c, render.h.
* Added a wrapper, cmark_render, that creates a renderer given a
  character-escaper and a node renderer.

Closes #63.

1 files changed, 67 insertions, 0 deletions

diff --git a/src/render.h b/src/render.h
new file mode 100644
index 0000000..6c268a1
--- /dev/null
+++ b/src/render.h
@@ -0,0 +1,67 @@
+#ifndef CMARK_RENDER_H
+#define CMARK_RENDER_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdlib.h>
+#include "buffer.h"
+#include "chunk.h"
+
+typedef enum  {
+	LITERAL,
+	NORMAL,
+	TITLE,
+	URL
+} cmark_escaping;
+
+struct cmark_render_state {
+	int options;
+	cmark_strbuf* buffer;
+	cmark_strbuf* prefix;
+	int column;
+	int width;
+	int need_cr;
+	bufsize_t last_breakable;
+	int enumlevel;
+	bool begin_line;
+	bool no_wrap;
+	bool in_tight_list_item;
+	void (*outc)(struct cmark_render_state*,
+		     cmark_escaping,
+		     int32_t,
+		     unsigned char);
+};
+
+typedef struct cmark_render_state cmark_render_state;
+
+void cr(cmark_render_state *state);
+
+void blankline(cmark_render_state *state);
+
+void out(cmark_render_state *state,
+	 cmark_chunk str,
+	 bool wrap,
+	 cmark_escaping escape);
+
+void lit(cmark_render_state *state, char *s, bool wrap);
+
+char*
+cmark_render(cmark_node *root,
+	     int options,
+	     int width,
+	     void (*outc)(cmark_render_state*,
+			  cmark_escaping,
+			  int32_t,
+			  unsigned char),
+	     int (*render_node)(cmark_node *node,
+				cmark_event_type ev_type,
+				cmark_render_state *state));
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif