* merged latest fixes from debian-sid

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

diff --git a/apt-pkg/contrib/strutl.cc b/apt-pkg/contrib/strutl.cc
index f3704581044252ee39fb06959932bda0aaf402a0..ab2da2d9af11a9b21ed9930b5ec76869754efef1 100644 (file)
--- a/apt-pkg/contrib/strutl.cc
+++ b/apt-pkg/contrib/strutl.cc
@@ -692,14 +692,16 @@ int StringToBool(const string &Text,int Default)
    year 2000 complient and timezone neutral */
 string TimeRFC1123(time_t Date)
 {
-   struct tm Conv = *gmtime(&Date);
-   char Buf[300];
+   struct tm Conv;
+   if (gmtime_r(&Date, &Conv) == NULL)
+      return "";
 
+   char Buf[300];
    const char *Day[] = {"Sun","Mon","Tue","Wed","Thu","Fri","Sat"};
    const char *Month[] = {"Jan","Feb","Mar","Apr","May","Jun","Jul",
                           "Aug","Sep","Oct","Nov","Dec"};
 
-   sprintf(Buf,"%s, %02i %s %i %02i:%02i:%02i GMT",Day[Conv.tm_wday],
+   snprintf(Buf, sizeof(Buf), "%s, %02i %s %i %02i:%02i:%02i GMT",Day[Conv.tm_wday],
           Conv.tm_mday,Month[Conv.tm_mon],Conv.tm_year+1900,Conv.tm_hour,
           Conv.tm_min,Conv.tm_sec);
    return Buf;
@@ -1191,6 +1193,15 @@ char *safe_snprintf(char *Buffer,char *End,const char *Format,...)
    return Buffer + Did;
 }
                                                                        /*}}}*/
+// StripEpoch - Remove the version "epoch" from a version string       /*{{{*/
+// ---------------------------------------------------------------------
+string StripEpoch(const string &VerStr)
+{
+   size_t i = VerStr.find(":");
+   if (i == string::npos)
+      return VerStr;
+   return VerStr.substr(i+1);
+}
 
 // tolower_ascii - tolower() function that ignores the locale          /*{{{*/
 // ---------------------------------------------------------------------
@@ -1229,7 +1240,68 @@ bool CheckDomainList(const string &Host,const string &List)
    return false;
 }
                                                                        /*}}}*/
+// DeEscapeString - unescape (\0XX and \xXX) from a string             /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+string DeEscapeString(const string &input)
+{
+   char tmp[3];
+   string::const_iterator it, escape_start;
+   string output, octal, hex;
+   for (it = input.begin(); it != input.end(); it++) 
+   {
+      // just copy non-escape chars
+      if (*it != '\\')
+      {
+         output += *it;
+         continue;
+      }
 
+      // deal with double escape
+      if (*it == '\\' && 
+          (it + 1 < input.end()) &&  it[1] == '\\')
+      {
+         // copy
+         output += *it;
+         // advance iterator one step further
+         it += 1;
+         continue;
+      }
+        
+      // ensure we have a char to read
+      if (it + 1 == input.end())
+         continue;
+
+      // read it
+      it++;
+      switch (*it)
+      {
+         case '0':
+            if (it + 2 <= input.end()) {
+               tmp[0] = it[1];
+               tmp[1] = it[2];
+               tmp[2] = 0;
+               output += (char)strtol(tmp, 0, 8);
+               it += 2;
+            }
+            break;
+         case 'x':
+            if (it + 2 <= input.end()) {
+               tmp[0] = it[1];
+               tmp[1] = it[2];
+               tmp[2] = 0;
+               output += (char)strtol(tmp, 0, 16);
+               it += 2;
+            }
+            break;
+         default:
+            // FIXME: raise exception here?
+            break;
+      }
+   }
+   return output;
+}
+                                                                       /*}}}*/
 // URI::CopyFrom - Copy from an object                                 /*{{{*/
 // ---------------------------------------------------------------------
 /* This parses the URI into all of its components */