From 275d3ed4372cee6694f0c63bd79d82be8a3d8acd Mon Sep 17 00:00:00 2001
From: Dimitri van Heesch <doxygen@gmail.com>
Date: Sat, 13 Feb 2021 20:27:10 +0100
Subject: Refactoring: replace QRegExp by std::regex in markdown.cpp

---
 src/markdown.cpp | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/src/markdown.cpp b/src/markdown.cpp
index b9fad70..df632d7 100644
--- a/src/markdown.cpp
+++ b/src/markdown.cpp
@@ -33,11 +33,11 @@
 
 #include <stdio.h>
 #include <qglobal.h>
-#include <qregexp.h>
 #include <qfileinfo.h>
 
 #include <unordered_map>
 #include <functional>
+#include <regex>
 
 #include "markdown.h"
 #include "growbuf.h"
@@ -1471,15 +1471,15 @@ static int isHRuler(const char *data,int size)
 static QCString extractTitleId(QCString &title, int level)
 {
   TRACE(title.data());
-  //static QRegExp r1("^[a-z_A-Z][a-z_A-Z0-9\\-]*:");
-  static QRegExp r2("\\{#[a-z_A-Z][a-z_A-Z0-9\\-]*\\}");
-  int l=0;
-  int i = r2.match(title,0,&l);
-  if (i!=-1 && title.mid(i+l).stripWhiteSpace().isEmpty()) // found {#id} style id
-  {
-    QCString id = title.mid(i+2,l-3);
-    title = title.left(i);
-    //printf("found id='%s' title='%s'\n",id.data(),title.data());
+  // match e.g. '{#id-b11} ' and capture 'id-b11'
+  static std::regex r2("\\{#([a-z_A-Z][a-z_A-Z0-9\\-]*)\\}[[:space:]]*$");
+  std::smatch match;
+  std::string ti = title.str();
+  if (std::regex_search(ti,match,r2))
+  {
+    std::string id = match[1].str();
+    title = title.left(match.position());
+    //printf("found match id='%s' title=%s\n",id.c_str(),title.data());
     return id;
   }
   if ((level > 0) && (level <= Config_getInt(TOC_INCLUDE_HEADINGS)))
-- 
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