X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/500827ed367c8ac277abbd582d389f6738905a09..899d08fea9e10d617afaa42f51f4abda76fc508f:/apt-pkg/contrib/strutl.cc

diff --git a/apt-pkg/contrib/strutl.cc b/apt-pkg/contrib/strutl.cc
index 9be173542..a75fbdf92 100644
--- a/apt-pkg/contrib/strutl.cc
+++ b/apt-pkg/contrib/strutl.cc
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description								/*{{{*/
-// $Id: strutl.cc,v 1.38 2001/03/11 07:22:19 jgg Exp $
+// $Id: strutl.cc,v 1.48 2003/07/18 14:15:11 mdz Exp $
 /* ######################################################################
 
    String Util - Some useful string functions.
@@ -32,6 +32,10 @@
 #include <regex.h>
 #include <errno.h>
 #include <stdarg.h>
+
+#include "config.h"
+
+using namespace std;
 									/*}}}*/
 
 // strstrip - Remove white space from the front and back of a string	/*{{{*/
@@ -219,7 +223,7 @@ string QuoteString(string Str,const char *Bad)
 string DeQuoteString(string Str)
 {
    string Res;
-   for (string::iterator I = Str.begin(); I != Str.end(); I++)
+   for (string::const_iterator I = Str.begin(); I != Str.end(); I++)
    {
       if (*I == '%' && I + 2 < Str.end())
       {
@@ -438,6 +442,43 @@ int stringcmp(const char *A,const char *AEnd,const char *B,const char *BEnd)
       return -1;
    return 1;
 }
+
+#if __GNUC__ >= 3
+int stringcmp(string::const_iterator A,string::const_iterator AEnd,
+	      const char *B,const char *BEnd)
+{
+   for (; A != AEnd && B != BEnd; A++, B++)
+      if (*A != *B)
+	 break;
+   
+   if (A == AEnd && B == BEnd)
+      return 0;
+   if (A == AEnd)
+      return 1;
+   if (B == BEnd)
+      return -1;
+   if (*A < *B)
+      return -1;
+   return 1;
+}
+int stringcmp(string::const_iterator A,string::const_iterator AEnd,
+	      string::const_iterator B,string::const_iterator BEnd)
+{
+   for (; A != AEnd && B != BEnd; A++, B++)
+      if (*A != *B)
+	 break;
+   
+   if (A == AEnd && B == BEnd)
+      return 0;
+   if (A == AEnd)
+      return 1;
+   if (B == BEnd)
+      return -1;
+   if (*A < *B)
+      return -1;
+   return 1;
+}
+#endif
 									/*}}}*/
 // stringcasecmp - Arbitary case insensitive string compare		/*{{{*/
 // ---------------------------------------------------------------------
@@ -458,6 +499,42 @@ int stringcasecmp(const char *A,const char *AEnd,const char *B,const char *BEnd)
       return -1;
    return 1;
 }
+#if __GNUC__ >= 3
+int stringcasecmp(string::const_iterator A,string::const_iterator AEnd,
+		  const char *B,const char *BEnd)
+{
+   for (; A != AEnd && B != BEnd; A++, B++)
+      if (toupper(*A) != toupper(*B))
+	 break;
+
+   if (A == AEnd && B == BEnd)
+      return 0;
+   if (A == AEnd)
+      return 1;
+   if (B == BEnd)
+      return -1;
+   if (toupper(*A) < toupper(*B))
+      return -1;
+   return 1;
+}
+int stringcasecmp(string::const_iterator A,string::const_iterator AEnd,
+		  string::const_iterator B,string::const_iterator BEnd)
+{
+   for (; A != AEnd && B != BEnd; A++, B++)
+      if (toupper(*A) != toupper(*B))
+	 break;
+
+   if (A == AEnd && B == BEnd)
+      return 0;
+   if (A == AEnd)
+      return 1;
+   if (B == BEnd)
+      return -1;
+   if (toupper(*A) < toupper(*B))
+      return -1;
+   return 1;
+}
+#endif
 									/*}}}*/
 // LookupTag - Lookup the value of a tag in a taged string		/*{{{*/
 // ---------------------------------------------------------------------
@@ -479,7 +556,7 @@ string LookupTag(string Message,const char *Tag,const char *Default)
 	 for (J = I; *J != '\n' && J < Message.end(); J++);
 	 for (; J > I && isspace(J[-1]) != 0; J--);
 	 
-	 return string(I,J-I);
+	 return string(I,J);
       }
       
       for (; *I != '\n' && I < Message.end(); I++);
@@ -547,7 +624,7 @@ string TimeRFC1123(time_t Date)
    fancy buffering is used. */
 bool ReadMessages(int Fd, vector<string> &List)
 {
-   char Buffer[4000];
+   char Buffer[64000];
    char *End = Buffer;
    
    while (1)
@@ -575,7 +652,7 @@ bool ReadMessages(int Fd, vector<string> &List)
 	    continue;
 	 
 	 // Pull the message out
-	 string Message(Buffer,0,I-Buffer);
+	 string Message(Buffer,I-Buffer);
 
 	 // Fix up the buffer
 	 for (; I < End && *I == '\n'; I++);
@@ -637,7 +714,11 @@ static int MonthConv(char *Month)
    
    Contributed by Roger Beeman <beeman@cisco.com>, with the help of
    Mark Baushke <mdb@cisco.com> and the rest of the Gurus at CISCO. */
-#ifndef __USE_MISC        // glib sets this
+
+/* Turned it into an autoconf check, because GNU is not the only thing which
+   can provide timegm. -- 2002-09-22, Joel Baker */
+
+#ifndef HAVE_TIMEGM // Now with autoconf!
 static time_t timegm(struct tm *t)
 {
    time_t tl, tb;
@@ -744,15 +825,14 @@ static int HexDigit(int c)
 // Hex2Num - Convert a long hex number into a buffer			/*{{{*/
 // ---------------------------------------------------------------------
 /* The length of the buffer must be exactly 1/2 the length of the string. */
-bool Hex2Num(const char *Start,const char *End,unsigned char *Num,
-	     unsigned int Length)
+bool Hex2Num(string Str,unsigned char *Num,unsigned int Length)
 {
-   if (End - Start != (signed)(Length*2))
+   if (Str.length() != Length*2)
       return false;
    
    // Convert each digit. We store it in the same order as the string
    int J = 0;
-   for (const char *I = Start; I < End;J++, I += 2)
+   for (string::const_iterator I = Str.begin(); I != Str.end();J++, I += 2)
    {
       if (isxdigit(*I) == 0 || isxdigit(I[1]) == 0)
 	 return false;
@@ -866,8 +946,8 @@ unsigned long RegexChoice(RxChoiceList *Rxs,const char **ListBegin,
 									/*}}}*/
 // ioprintf - C format string outputter to C++ iostreams		/*{{{*/
 // ---------------------------------------------------------------------
-/* This is used to make the internationalization strinc easier to translate
- and to allow reordering of parameters */
+/* This is used to make the internationalization strings easier to translate
+   and to allow reordering of parameters */
 void ioprintf(ostream &out,const char *format,...) 
 {
    va_list args;
@@ -879,6 +959,28 @@ void ioprintf(ostream &out,const char *format,...)
    out << S;
 }
 									/*}}}*/
+// safe_snprintf - Safer snprintf					/*{{{*/
+// ---------------------------------------------------------------------
+/* This is a snprintf that will never (ever) go past 'End' and returns a
+   pointer to the end of the new string. The returned string is always null
+   terminated unless Buffer == end. This is a better alterantive to using
+   consecutive snprintfs. */
+char *safe_snprintf(char *Buffer,char *End,const char *Format,...)
+{
+   va_list args;
+   unsigned long Did;
+
+   va_start(args,Format);
+
+   if (End <= Buffer)
+      return End;
+
+   Did = vsnprintf(Buffer,End - Buffer,Format,args);
+   if (Did < 0 || Buffer + Did > End)
+      return End;
+   return Buffer + Did;
+}
+									/*}}}*/
 
 // CheckDomainList - See if Host is in a , seperate list		/*{{{*/
 // ---------------------------------------------------------------------
@@ -886,14 +988,14 @@ void ioprintf(ostream &out,const char *format,...)
    matched against the argument */
 bool CheckDomainList(string Host,string List)
 {
-   const char *Start = List.begin();
-   for (const char *Cur = List.begin(); Cur <= List.end() ; Cur++)
+   string::const_iterator Start = List.begin();
+   for (string::const_iterator Cur = List.begin(); Cur <= List.end(); Cur++)
    {
       if (Cur < List.end() && *Cur != ',')
 	 continue;
       
       // Match the end of the string..
-      if ((Host.size() >= (unsigned)(Cur - List.begin())) &&
+      if ((Host.size() >= (unsigned)(Cur - Start)) &&
 	  Cur - Start != 0 &&
 	  stringcasecmp(Host.end() - (Cur - Start),Host.end(),Start,Cur) == 0)
 	 return true;
@@ -943,7 +1045,7 @@ void URI::CopyFrom(string U)
       Path = "/";
 
    // Now we attempt to locate a user:pass@host fragment
-   if (FirstColon[1] == '/' && FirstColon[2] == '/')
+   if (FirstColon + 2 <= U.end() && FirstColon[1] == '/' && FirstColon[2] == '/')
       FirstColon += 3;
    else
       FirstColon += 1;