From 05d6531c7a8ecfad513a0e76b44b273b70fa919b Mon Sep 17 00:00:00 2001
From: Ruslan Baratov <ruslan_baratov@yahoo.com>
Date: Wed, 26 Nov 2014 01:45:26 +0300
Subject: [PATCH] cmSystemTools: Add StringToInt helper

Convert a string to a signed integer and reject any extra input.

Co-Author: Rolf Eike Beer <eike@sf-mail.de>
---
 Source/cmSystemTools.cxx | 8 ++++++++
 Source/cmSystemTools.h   | 3 +++
 2 files changed, 11 insertions(+)

diff --git a/Source/cmSystemTools.cxx b/Source/cmSystemTools.cxx
index baac7b878..9852dd6f1 100644
--- a/Source/cmSystemTools.cxx
+++ b/Source/cmSystemTools.cxx
@@ -2923,3 +2923,11 @@ std::vector<std::string> cmSystemTools::tokenize(const std::string& str,
     }
   return tokens;
 }
+
+//----------------------------------------------------------------------------
+bool cmSystemTools::StringToInt(const char* str, int* value)
+{
+  char *endp;
+  *value = static_cast<int>(strtol(str, &endp, 10));
+  return (*endp == '\0') && (endp != str);
+}
diff --git a/Source/cmSystemTools.h b/Source/cmSystemTools.h
index 4455dd1d8..763389b5f 100644
--- a/Source/cmSystemTools.h
+++ b/Source/cmSystemTools.h
@@ -458,6 +458,9 @@ public:
   static std::vector<std::string> tokenize(const std::string& str,
                                            const std::string& sep);
 
+  /** Convert string to int. Expected that the whole string is an integer */
+  static bool StringToInt(const char* str, int* value);
+
 #ifdef _WIN32
   struct WindowsFileRetry
   {