add default and override handling for Cnf::FindVector

[apt.git] / apt-pkg / contrib / strutl.cc

diff --git a/apt-pkg/contrib/strutl.cc b/apt-pkg/contrib/strutl.cc
index 508af8922b0c87c4d4eb17274c5df8e15b01310b..f8bb3890d8d199e349857627a9873b0f6921eac0 100644 (file)
--- a/apt-pkg/contrib/strutl.cc
+++ b/apt-pkg/contrib/strutl.cc
@@ -36,7 +36,30 @@
 
 using namespace std;
                                                                        /*}}}*/
+// Strip - Remove white space from the front and back of a string       /*{{{*/
+// ---------------------------------------------------------------------
+namespace APT {
+   namespace String {
+std::string Strip(const std::string &s)
+{
+   size_t start = s.find_first_not_of(" \t\n");
+   // only whitespace
+   if (start == string::npos)
+      return "";
+   size_t end = s.find_last_not_of(" \t\n");
+   return s.substr(start, end-start+1);
+}
+
+bool Endswith(const std::string &s, const std::string &end)
+{
+   if (end.size() > s.size())
+      return false;
+   return (s.substr(s.size() - end.size(), s.size()) == end);
+}
 
+}
+}
+                                                                       /*}}}*/
 // UTF8ToCodeset - Convert some UTF-8 string for some codeset          /*{{{*/
 // ---------------------------------------------------------------------
 /* This is handy to use before display some information for enduser  */
@@ -403,7 +426,7 @@ string TimeToStr(unsigned long Sec)
                                                                        /*}}}*/
 // SubstVar - Substitute a string for another string                   /*{{{*/
 // ---------------------------------------------------------------------
-/* This replaces all occurances of Subst with Contents in Str. */
+/* This replaces all occurrences of Subst with Contents in Str. */
 string SubstVar(const string &Str,const string &Subst,const string &Contents)
 {
    string::size_type Pos = 0;
@@ -903,7 +926,7 @@ bool FTPMDTMStrToTime(const char* const str,time_t &time)
                                                                        /*}}}*/
 // StrToTime - Converts a string into a time_t                         /*{{{*/
 // ---------------------------------------------------------------------
-/* This handles all 3 populare time formats including RFC 1123, RFC 1036
+/* This handles all 3 popular time formats including RFC 1123, RFC 1036
    and the C library asctime format. It requires the GNU library function
    'timegm' to convert a struct tm in UTC to a time_t. For some bizzar
    reason the C library does not provide any such function :< This also
@@ -1107,9 +1130,11 @@ bool TokSplitString(char Tok,char *Input,char **List,
    also, but the advantage is that we have an iteratable vector */
 vector<string> VectorizeString(string const &haystack, char const &split)
 {
+   vector<string> exploded;
+   if (haystack.empty() == true)
+      return exploded;
    string::const_iterator start = haystack.begin();
    string::const_iterator end = start;
-   vector<string> exploded;
    do {
       for (; end != haystack.end() && *end != split; ++end);
       exploded.push_back(string(start, end));
@@ -1118,33 +1143,34 @@ vector<string> VectorizeString(string const &haystack, char const &split)
    return exploded;
 }
                                                                        /*}}}*/
-// StringSplit - like python string.split              /*{{{*/
+// StringSplit - split a string into a string vector by token          /*{{{*/
 // ---------------------------------------------------------------------
-/* This can be used to split a given string up into a vector of strings
- * The seperator is a string
+/* See header for details.
  */
-vector<string> StringSplit(string const &s, std::string const &sep,
+vector<string> StringSplit(std::string const &s, std::string const &sep,
                            unsigned int maxsplit)
 {
    vector<string> split;
    size_t start, pos;
 
+   // no seperator given, this is bogus
    if(sep.size() == 0)
       return split;
 
    start = pos = 0;
-   do {
+   while (pos != string::npos)
+   {
       pos = s.find(sep, start);
       split.push_back(s.substr(start, pos-start));
       
-      // deal with the max-split
-      if(maxsplit > 0 && split.size() >= maxsplit)
+      // if maxsplit is reached, the remaining string is the last item
+      if(split.size() >= maxsplit)
       {
          split[split.size()-1] = s.substr(start);
          break;
       }
       start = pos+sep.size();
-   } while (pos != string::npos);
+   }
    return split;
 }
                                                                        /*}}}*/
@@ -1289,7 +1315,7 @@ string StripEpoch(const string &VerStr)
 // tolower_ascii - tolower() function that ignores the locale          /*{{{*/
 // ---------------------------------------------------------------------
 /* This little function is the most called method we have and tries
-   therefore to do the absolut minimum - and is noteable faster than
+   therefore to do the absolut minimum - and is notable faster than
    standard tolower/toupper and as a bonus avoids problems with different
    locales - we only operate on ascii chars anyway. */
 int tolower_ascii(int const c)
@@ -1300,9 +1326,9 @@ int tolower_ascii(int const c)
 }
                                                                        /*}}}*/
 
-// CheckDomainList - See if Host is in a , seperate list               /*{{{*/
+// CheckDomainList - See if Host is in a , separate list               /*{{{*/
 // ---------------------------------------------------------------------
-/* The domain list is a comma seperate list of domains that are suffix
+/* The domain list is a comma separate list of domains that are suffix
    matched against the argument */
 bool CheckDomainList(const string &Host,const string &List)
 {