From ce0f7d431ce3e0d8c131b81cd2f6a9a8e113fb93 Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Mon, 28 Dec 2015 17:08:39 -0800
Subject: render:  added begin_content field.

This is like `begin_line` except that it doesn't trigger
production of the prefix.  So it can be set after an initial
prefix (say `> `) is printed by the renderer, and consulted
in determining whether to escape content that has a special
meaning at the beginning of a line.

Used in the commonmark renderer.
---
 src/render.c | 9 ++++++++-
 src/render.h | 1 +
 2 files changed, 9 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/render.c b/src/render.c
index f1ec672..d477363 100755
--- a/src/render.c
+++ b/src/render.c
@@ -44,6 +44,7 @@ static void S_out(cmark_renderer *renderer, const char *source, bool wrap,
     }
     renderer->column = 0;
     renderer->begin_line = true;
+    renderer->begin_content = true;
     renderer->need_cr -= 1;
   }
 
@@ -65,6 +66,7 @@ static void S_out(cmark_renderer *renderer, const char *source, bool wrap,
         cmark_strbuf_putc(renderer->buffer, ' ');
         renderer->column += 1;
         renderer->begin_line = false;
+        renderer->begin_content = false;
         renderer->last_breakable = renderer->buffer->size - 1;
         // skip following spaces
         while (source[i + 1] == ' ') {
@@ -76,13 +78,16 @@ static void S_out(cmark_renderer *renderer, const char *source, bool wrap,
       cmark_strbuf_putc(renderer->buffer, '\n');
       renderer->column = 0;
       renderer->begin_line = true;
+      renderer->begin_content = true;
       renderer->last_breakable = 0;
     } else if (escape == LITERAL) {
       cmark_render_code_point(renderer, c);
       renderer->begin_line = false;
+      renderer->begin_content = false;
     } else {
       (renderer->outc)(renderer, escape, c, nextc);
       renderer->begin_line = false;
+      renderer->begin_content = false;
     }
 
     // If adding the character went beyond width, look for an
@@ -104,6 +109,7 @@ static void S_out(cmark_renderer *renderer, const char *source, bool wrap,
       cmark_chunk_free(&remainder);
       renderer->last_breakable = 0;
       renderer->begin_line = false;
+      renderer->begin_content = false;
     }
 
     i += len;
@@ -136,7 +142,8 @@ char *cmark_render(cmark_node *root, int options, int width,
   cmark_iter *iter = cmark_iter_new(root);
 
   cmark_renderer renderer = {&buf,  &pref, 0,    width, 0,           0,    true,
-                             false, false, outc, S_cr,  S_blankline, S_out};
+                             false, false, false,
+                             outc, S_cr,  S_blankline, S_out};
 
   while ((ev_type = cmark_iter_next(iter)) != CMARK_EVENT_DONE) {
     cur = cmark_iter_get_node(iter);
diff --git a/src/render.h b/src/render.h
index 9ab347b..479936a 100644
--- a/src/render.h
+++ b/src/render.h
@@ -19,6 +19,7 @@ struct cmark_renderer {
   int need_cr;
   bufsize_t last_breakable;
   bool begin_line;
+  bool begin_content;
   bool no_wrap;
   bool in_tight_list_item;
   void (*outc)(struct cmark_renderer *, cmark_escaping, int32_t, unsigned char);
-- 
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