From c58dfab9903ea7228b814f6f76d2c2518b3ea0a6 Mon Sep 17 00:00:00 2001
From: zvon <tom.zvon@gmail.com>
Date: Thu, 3 Jan 2019 20:16:28 +0100
Subject: [PATCH] Make string short, so regex won't segfault with libstdc++,
 replace simple regex with c++ functions

---
 Makefile      |  8 +++-----
 tv_rename.cpp | 30 ++++++++++++++++++++----------
 2 files changed, 23 insertions(+), 15 deletions(-)

diff --git a/Makefile b/Makefile
index fcc72c8..7fce707 100644
--- a/Makefile
+++ b/Makefile
@@ -4,14 +4,12 @@ CFLAGS ?= -O2 -g -Wall -Wextra -std=c++11
 
 default: tv_rename
 
-# using libc++ because libstdc++ has a bug in regex that causes seg fault with long lines
-
 tv_rename: functions.o filesystem.o tv_rename.cpp
-	$(CXX) $(CFLAGS) -stdlib=libc++ -o tv_rename tv_rename.cpp functions.o filesystem.o -lcurl
+	$(CXX) $(CFLAGS) -o tv_rename tv_rename.cpp functions.o filesystem.o -lcurl
 
 filesystem.o: filesystem.cpp
-	$(CXX) $(CFLAGS) -stdlib=libc++ -c filesystem.cpp
+	$(CXX) $(CFLAGS) -c filesystem.cpp
 
 functions.o: functions.cpp
-	$(CXX) $(CFLAGS) -stdlib=libc++ -c functions.cpp
+	$(CXX) $(CFLAGS) -c functions.cpp
 
diff --git a/tv_rename.cpp b/tv_rename.cpp
index d294dc3..a1c018f 100644
--- a/tv_rename.cpp
+++ b/tv_rename.cpp
@@ -38,7 +38,10 @@ int main(int argc, char** argv) {
 			show = argv[x+1];
 			x++;
 		} else if ( !(strcmp("-n", argv[x]) && strcmp("--season", argv[x])) ) {
-			seasons = std::regex_replace(argv[x+1], std::regex("[^[0-9 ]]*"), "");
+			size_t pos{0};
+			while((argv[x+1][pos] < '0' || argv[x+1][pos] > '9') && argv[x+1][pos] != ' ')
+				pos++;
+			seasons = std::string(&argv[x+1][pos]);
 			x++;
 		} else if ( !(strcmp("-c", argv[x]) && strcmp("--correct-path", argv[x])) ) {
 			change_dir = false;
@@ -91,7 +94,9 @@ int main(int argc, char** argv) {
 	}
 
 	if( show.empty() ) {
-		show = std::regex_replace(FSLib::canonical(path).c_str(), std::regex(".*/"), "");
+		auto pos = show.find_last_of('/');
+		if( pos != std::string::npos )
+			show = show.substr(++pos);
 		std::cout << "Is this the right show name? " << show << std::endl;
 		std::string response;
 		std::cin >> response;
@@ -126,20 +131,24 @@ void singleSeason( const std::string &path, const std::string &show, int season,
 	url += std::to_string(season);
 	//get source code of season's page
 	auto season_code = c.execute(url);
-	//remove newlines cause regex can't multiline
-	season_code = std::regex_replace(season_code, std::regex("[\r\n]"), "");
-	//first 900 chars or so are useless to us, no need to regex through them
+	//remove newlines
+	season_code.erase(std::remove_if(season_code.begin(), season_code.end(), [](char x) {return x == '\r' || x == '\n';}), season_code.end());
+	//first 900 chars or so are useless to us
 	season_code = season_code.substr(900);
 	//get only the episode names
-	std::smatch season_match;
-	if( std::regex_search(season_code, season_match, std::regex("<table class=.*?id=\"translations\">.*</table>")) ) {
-		season_code = season_match[0];
+	auto pos = season_code.find("\"translations\"");
+	if( pos != std::string::npos ) {
+		season_code = season_code.substr(pos);
+		pos = season_code.find("table");
+		if( pos != std::string::npos )
+			season_code = season_code.substr(0,pos);
+		else
+			return;
 	} else {
 		return;
 	}
 	std::regex title(".*<span.*?language=\"" + language + "\".*?>\\s*(.*?)\\s*?</span>.*");
 	std::regex episode_link("<td>.*?</td>");
-	std::regex language_reg("<span.*?</span>");
 	std::smatch ep_match;
 	std::vector<std::string> episodes;
 	//get episode names in all languages
@@ -177,7 +186,8 @@ void singleSeason( const std::string &path, const std::string &show, int season,
 		}
 		num -= 1;
 		if( num < episodes.size() ) {
-			name = std::regex_replace(name, std::regex("(.*)\\.(.*)"), "$1 - " + episodes[num] + ".$2");
+			auto pos = name.find_last_of('.');
+			name.insert(pos, " - " + episodes[num]);
 			if( !linux ) {
 				name = std::regex_replace(name, std::regex("[\\?\"\\\\|\\*]"), "");
 				name = std::regex_replace(name, std::regex("<"), "is less than");