From 7e564896fcc41c2b1a6bd5c86ebebab0de7ea5f9 Mon Sep 17 00:00:00 2001
From: Christoph Lipka <c-lipka@users.noreply.github.com>
Date: Sat, 30 Apr 2016 17:48:37 +0200
Subject: Added an option to add "anonymous" headings to the table of contents
 (currently Markdown only).

---
 Doxyfile         |  1 +
 src/config.xml   | 10 ++++++++++
 src/markdown.cpp | 16 ++++++++++++----
 3 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/Doxyfile b/Doxyfile
index 325a875..82a57b7 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -35,6 +35,7 @@ OPTIMIZE_FOR_FORTRAN   = NO
 OPTIMIZE_OUTPUT_VHDL   = NO
 EXTENSION_MAPPING      =
 MARKDOWN_SUPPORT       = YES
+TOC_INCLUDE_HEADINGS   =
 AUTOLINK_SUPPORT       = YES
 BUILTIN_STL_SUPPORT    = NO
 CPP_CLI_SUPPORT        = NO
diff --git a/src/config.xml b/src/config.xml
index 0aa8fda..69b13ec 100644
--- a/src/config.xml
+++ b/src/config.xml
@@ -617,6 +617,16 @@ Go to the <a href="commands.html">next</a> section or return to the
 ]]>
       </docs>
     </option>
+    <option type='int' id='TOC_INCLUDE_HEADINGS' minval='0' maxval='99' defval='0' depends='MARKDOWN_SUPPORT'>
+      <docs>
+<![CDATA[
+ When the \c TOC_INCLUDE_HEADINGS tag is set to a non-zero value, all headings
+ up to that level are automatically included in the table of contents, even if
+ they do not have an id attribute.
+ \note This feature currently applies only to Markdown headings.
+]]>
+      </docs>
+    </option>
     <option type='bool' id='AUTOLINK_SUPPORT' defval='1'>
       <docs>
 <![CDATA[
diff --git a/src/markdown.cpp b/src/markdown.cpp
index 9bee243..a071857 100644
--- a/src/markdown.cpp
+++ b/src/markdown.cpp
@@ -1226,7 +1226,7 @@ static int isHRuler(const char *data,int size)
   return n>=3; // at least 3 characters needed for a hruler
 }
 
-static QCString extractTitleId(QCString &title)
+static QCString extractTitleId(QCString &title, int level)
 {
   //static QRegExp r1("^[a-z_A-Z][a-z_A-Z0-9\\-]*:");
   static QRegExp r2("\\{#[a-z_A-Z][a-z_A-Z0-9\\-]*\\}");
@@ -1239,6 +1239,14 @@ static QCString extractTitleId(QCString &title)
     //printf("found id='%s' title='%s'\n",id.data(),title.data());
     return id;
   }
+  if ((level > 0) && (level <= Config_getInt(TOC_INCLUDE_HEADINGS)))
+  {
+    static int autoId = 0;
+    QCString id;
+    id.sprintf("autotoc_md%d",autoId++);
+    //printf("auto-generated id='%s' title='%s'\n",id.data(),title.data());
+    return id;
+  }
   //printf("no id found in title '%s'\n",title.data());
   return "";
 }
@@ -1270,7 +1278,7 @@ static int isAtxHeader(const char *data,int size,
 
   // store result
   convertStringFragment(header,data+i,end-i);
-  id = extractTitleId(header);
+  id = extractTitleId(header, level);
   if (!id.isEmpty()) // strip #'s between title and id
   {
     i=header.length()-1;
@@ -2079,7 +2087,7 @@ static QCString processBlocks(const QCString &s,int indent)
         while (pi<size && data[pi]==' ') pi++;
         QCString header,id;
         convertStringFragment(header,data+pi,i-pi-1);
-        id = extractTitleId(header);
+        id = extractTitleId(header, level);
         //printf("header='%s' is='%s'\n",header.data(),id.data());
         if (!header.isEmpty())
         {
@@ -2220,7 +2228,7 @@ static QCString extractPageTitle(QCString &docs,QCString &id)
       QCString lns;
       lns.fill('\n',ln);
       docs=lns+docs.mid(end2);
-      id = extractTitleId(title);
+      id = extractTitleId(title, 0);
       //printf("extractPageTitle(title='%s' docs='%s' id='%s')\n",title.data(),docs.data(),id.data());
       return title;
     }
-- 
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