From eae4921ccdf3fce89db3d8d86f8ea7be832ac101 Mon Sep 17 00:00:00 2001
From: Oleg Korshul <Oleg.Korshul@onlyoffice.com>
Date: Sat, 9 Jul 2022 11:56:53 +0300
Subject: [PATCH] Change regex engine to boost (gcc error)

---
 HtmlFile2/HtmlFile2.pro |  4 ++++
 HtmlFile2/htmlfile2.cpp | 15 +++++++++++----
 2 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/HtmlFile2/HtmlFile2.pro b/HtmlFile2/HtmlFile2.pro
index c8a6d4a934..48059c7a8c 100644
--- a/HtmlFile2/HtmlFile2.pro
+++ b/HtmlFile2/HtmlFile2.pro
@@ -23,6 +23,10 @@ core_windows:CONFIG += no_batch
 include($$CORE_ROOT_DIR/Common/3dParty/html/gumbo.pri)
 include($$CORE_ROOT_DIR/Common/3dParty/html/css/CssCalculator.pri)
 
+CONFIG += core_boost_libs
+CONFIG += core_boost_regex
+include($$CORE_ROOT_DIR/Common/3dParty/boost/boost.pri)
+
 ADD_DEPENDENCY(kernel, UnicodeConverter, graphics, kernel_network)
 
 SOURCES += htmlfile2.cpp
diff --git a/HtmlFile2/htmlfile2.cpp b/HtmlFile2/htmlfile2.cpp
index a2f3d6e87a..3ed3b4c239 100644
--- a/HtmlFile2/htmlfile2.cpp
+++ b/HtmlFile2/htmlfile2.cpp
@@ -26,7 +26,7 @@
 #include "../DesktopEditor/graphics/pro/Graphics.h"
 #include "htmlfile2.h"
 
-#include <regex>
+#include <boost/regex.hpp>
 
 #ifndef VALUE2STR
 #define VALUE_TO_STRING(x) #x
@@ -1072,12 +1072,19 @@ private:
                 std::wstring wsType = L"dxa";
 
                 //Если ширина указана в %, то используем тип dxa, если же в других ндтнтцах измерения, то в pct
+            #if 1
+                // проблема с regex в старом gcc (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52719)
+                boost::wregex oWidthRegex(L"((width)+)[\\s]*:[\\s]*(.+%)");
+                bool bIsWidthPct = boost::regex_search(sSelectors.back().m_sStyle, oWidthRegex);
+            #else
                 std::wregex oWidthRegex(L"((width)+)[\\s]*:[\\s]*(.+%)");
+                bool bIsWidthPct = std::regex_search(sSelectors.back().m_sStyle.data(), oWidthRegex);
+            #endif
 
-                if (std::regex_search(sSelectors.back().m_sStyle.data(), oWidthRegex))
-                         wsType = L"pct";
+                if (bIsWidthPct)
+                    wsType = L"pct";
                 else
-                       nWidth *= 10;
+                    nWidth *= 10;
                 //-------------------------
 
                 if (nWidth > 0)