From a3fb932831ca09b2a931616f1701ea39429356c2 Mon Sep 17 00:00:00 2001
From: brain <brain@e03df62e-2008-0410-955e-edbf42e46eb7>
Date: Fri, 23 Jan 2009 13:20:57 +0000
Subject: Fix m_nationalchars using a copy and paste of my unsafe copy and
 paste algorithm, that will lock up if the string to replace contains the
 string to search for. Finally make this function a core utility function and
 remove the copies from 3 modules m_alias m_nationalchars and m_sqlauth

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@10990 e03df62e-2008-0410-955e-edbf42e46eb7
---
 src/hashcomp.cpp                | 25 ++++++++++++++++++++++++-
 src/helperfuncs.cpp             |  3 +++
 src/modules/extra/m_sqlauth.cpp | 12 ------------
 src/modules/m_alias.cpp         | 11 -----------
 src/modules/m_nationalchars.cpp | 14 +-------------
 5 files changed, 28 insertions(+), 37 deletions(-)

(limited to 'src')

diff --git a/src/hashcomp.cpp b/src/hashcomp.cpp
index 52a6210f9..0d036d528 100644
--- a/src/hashcomp.cpp
+++ b/src/hashcomp.cpp
@@ -6,7 +6,7 @@
  * See: http://www.inspircd.org/wiki/index.php/Credits
  *
  * This program is free but copyrighted software; see
- *            the file COPYING for details.
+ *	    the file COPYING for details.
  *
  * ---------------------------------------------------
  */
@@ -501,3 +501,26 @@ long irc::portparser::GetToken()
 	}
 }
 
+const std::string& SearchAndReplace(std::string& text, const std::string& pattern, const std::string& replace)
+{
+	std::string replacement;
+	if ((!pattern.empty()) && (!text.empty()))
+	{
+		for (std::string::size_type n = 0; n != text.length(); ++n)
+		{
+			if (text.length() >= pattern.length() && text.substr(n, pattern.length()) == pattern)
+			{
+				/* Found the pattern in the text, replace it, and advance */
+				replacement.append(replace);
+				n = n + pattern.length() - 1;
+			}
+			else
+			{
+				replacement += text[n];
+			}
+		}
+	}
+	text = replacement;
+	return text;
+}
+
diff --git a/src/helperfuncs.cpp b/src/helperfuncs.cpp
index 10659ae5f..f38b3e6b5 100644
--- a/src/helperfuncs.cpp
+++ b/src/helperfuncs.cpp
@@ -452,3 +452,6 @@ void InspIRCd::AddExtBanChar(char c)
 	else
 		tok.insert(ebpos + 9, 1, c);
 }
+
+
+
diff --git a/src/modules/extra/m_sqlauth.cpp b/src/modules/extra/m_sqlauth.cpp
index 0cd1ced24..f03ec08db 100644
--- a/src/modules/extra/m_sqlauth.cpp
+++ b/src/modules/extra/m_sqlauth.cpp
@@ -85,18 +85,6 @@ public:
 		return 0;
 	}
 
-	void SearchAndReplace(std::string& newline, const std::string &find, const std::string &replace)
-	{
-		std::string::size_type x = newline.find(find);
-		while (x != std::string::npos)
-		{
-			newline.erase(x, find.length());
-			if (!replace.empty())
-				newline.insert(x, replace);
-			x = newline.find(find);
-		}
-	}
-
 	bool CheckCredentials(User* user)
 	{
 		std::string thisquery = freeformquery;
diff --git a/src/modules/m_alias.cpp b/src/modules/m_alias.cpp
index c914aad66..76aceffc9 100644
--- a/src/modules/m_alias.cpp
+++ b/src/modules/m_alias.cpp
@@ -132,17 +132,6 @@ class ModuleAlias : public Module
 		return word;
 	}
 
-	void SearchAndReplace(std::string& newline, const std::string &find, const std::string &replace)
-	{
-		std::string::size_type x = newline.find(find);
-		while (x != std::string::npos)
-		{
-			newline.erase(x, find.length());
-			newline.insert(x, replace);
-			x = newline.find(find);
-		}
-	}
-
 	virtual int OnPreCommand(std::string &command, std::vector<std::string> &parameters, User *user, bool validated, const std::string &original_line)
 	{
 		std::multimap<std::string, Alias>::iterator i, upperbound;
diff --git a/src/modules/m_nationalchars.cpp b/src/modules/m_nationalchars.cpp
index cd88a02b0..6d6822d74 100755
--- a/src/modules/m_nationalchars.cpp
+++ b/src/modules/m_nationalchars.cpp
@@ -6,7 +6,7 @@
  * See: http://www.inspircd.org/wiki/index.php/Credits
  *
  * This program is free but copyrighted software; see
- *            the file COPYING for details.
+ *	    the file COPYING for details.
  *
  * ---------------------------------------------------
  */
@@ -26,18 +26,6 @@ DEFINE_HANDLER2(lwbNickHandler, bool, const char*, size_t);
 								 /*,m_reverse_additionalUp[256];*/
 static unsigned char m_reverse_additional[256],m_additionalMB[256],m_additionalUtf8[256],m_additionalUtf8range[256];
 
-void SearchAndReplace(std::string& newline, const std::string &find, const std::string &replace)
-{
-	std::string::size_type x = newline.find(find);
-	while (x != std::string::npos)
-	{
-		newline.erase(x, find.length());
-		newline.insert(x, replace);
-		x = newline.find(find);
-	}
-}
-
-
 char utf8checkrest(unsigned char * mb, unsigned char cnt)
 {
 	for (unsigned char * tmp=mb; tmp<mb+cnt; tmp++)
-- 
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