From 85bf001994fa59ca979293af3abb89d3486e0afb Mon Sep 17 00:00:00 2001
From: Michael Vogt <mvo@debian.org>
Date: Sat, 7 Sep 2013 13:12:50 +0200
Subject: add maxsplit parameter to StringSplit

---
 apt-pkg/contrib/strutl.cc | 18 +++++++++++++-----
 apt-pkg/contrib/strutl.h  |  2 +-
 2 files changed, 14 insertions(+), 6 deletions(-)

(limited to 'apt-pkg/contrib')

diff --git a/apt-pkg/contrib/strutl.cc b/apt-pkg/contrib/strutl.cc
index 819d50de0..508af8922 100644
--- a/apt-pkg/contrib/strutl.cc
+++ b/apt-pkg/contrib/strutl.cc
@@ -1123,19 +1123,27 @@ vector<string> VectorizeString(string const &haystack, char const &split)
 /* This can be used to split a given string up into a vector of strings
  * The seperator is a string
  */
-vector<string> StringSplit(string const &s, std::string const &sep)
+vector<string> StringSplit(string const &s, std::string const &sep,
+                           unsigned int maxsplit)
 {
    vector<string> split;
    size_t start, pos;
-   start = pos = 0;
+
    if(sep.size() == 0)
       return split;
-   
+
+   start = pos = 0;
    do {
       pos = s.find(sep, start);
       split.push_back(s.substr(start, pos-start));
-      if(pos != string::npos)
-         start = pos+sep.size();
+      
+      // deal with the max-split
+      if(maxsplit > 0 && split.size() >= maxsplit)
+      {
+         split[split.size()-1] = s.substr(start);
+         break;
+      }
+      start = pos+sep.size();
    } while (pos != string::npos);
    return split;
 }
diff --git a/apt-pkg/contrib/strutl.h b/apt-pkg/contrib/strutl.h
index c97246c90..944f91403 100644
--- a/apt-pkg/contrib/strutl.h
+++ b/apt-pkg/contrib/strutl.h
@@ -66,7 +66,7 @@ bool TokSplitString(char Tok,char *Input,char **List,
 		    unsigned long ListMax);
 std::vector<std::string> VectorizeString(std::string const &haystack, char const &split) __attrib_const;
 // like python string.split
-std::vector<std::string> StringSplit(std::string const &haystack, std::string const &sep) __attrib_const;
+std::vector<std::string> StringSplit(std::string const &haystack, std::string const &sep, unsigned int maxsplit=0) __attrib_const;
 void ioprintf(std::ostream &out,const char *format,...) __like_printf(2);
 void strprintf(std::string &out,const char *format,...) __like_printf(2);
 char *safe_snprintf(char *Buffer,char *End,const char *Format,...) __like_printf(3);
-- 
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