various simple changes to fix cppcheck warnings

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

diff --git a/apt-pkg/contrib/strutl.cc b/apt-pkg/contrib/strutl.cc
index aaf44b7ff95fff6601300c06f6a1c0a4bc4b9ac5..f643db451acca9d91da4e4c43c23c62677b8f28b 100644 (file)
--- a/apt-pkg/contrib/strutl.cc
+++ b/apt-pkg/contrib/strutl.cc
@@ -23,6 +23,7 @@
 
 #include <ctype.h>
 #include <string.h>
+#include <sstream>
 #include <stdio.h>
 #include <algorithm>
 #include <unistd.h>
@@ -179,14 +180,14 @@ bool ParseQuoteWord(const char *&String,string &Res)
    {
       if (*C == '"')
       {
-        for (C++; *C != 0 && *C != '"'; C++);
-        if (*C == 0)
+        C = strchr(C + 1, '"');
+        if (C == NULL)
            return false;
       }
       if (*C == '[')
       {
-        for (C++; *C != 0 && *C != ']'; C++);
-        if (*C == 0)
+        C = strchr(C + 1, ']');
+        if (C == NULL)
            return false;
       }
    }
@@ -904,24 +905,23 @@ bool StrToTime(const string &Val,time_t &Result)
 {
    struct tm Tm;
    char Month[10];
-   const char *I = Val.c_str();
-   
+
    // Skip the day of the week
-   for (;*I != 0  && *I != ' '; I++);
-   
+   const char *I = strchr(Val.c_str(), ' ');
+
    // Handle RFC 1123 time
    Month[0] = 0;
-   if (sscanf(I," %d %3s %d %d:%d:%d GMT",&Tm.tm_mday,Month,&Tm.tm_year,
+   if (sscanf(I," %2d %3s %4d %2d:%2d:%2d GMT",&Tm.tm_mday,Month,&Tm.tm_year,
              &Tm.tm_hour,&Tm.tm_min,&Tm.tm_sec) != 6)
    {
       // Handle RFC 1036 time
-      if (sscanf(I," %d-%3s-%d %d:%d:%d GMT",&Tm.tm_mday,Month,
+      if (sscanf(I," %2d-%3s-%3d %2d:%2d:%2d GMT",&Tm.tm_mday,Month,
                 &Tm.tm_year,&Tm.tm_hour,&Tm.tm_min,&Tm.tm_sec) == 6)
         Tm.tm_year += 1900;
       else
       {
         // asctime format
-        if (sscanf(I," %3s %d %d:%d:%d %d",Month,&Tm.tm_mday,
+        if (sscanf(I," %3s %2d %2d:%2d:%2d %4d",Month,&Tm.tm_mday,
                    &Tm.tm_hour,&Tm.tm_min,&Tm.tm_sec,&Tm.tm_year) != 6)
         {
            // 'ftp' time
@@ -1169,34 +1169,50 @@ unsigned long RegexChoice(RxChoiceList *Rxs,const char **ListBegin,
    return Hits;
 }
                                                                        /*}}}*/
-// ioprintf - C format string outputter to C++ iostreams               /*{{{*/
+// {str,io}printf - C format string outputter to C++ strings/iostreams /*{{{*/
 // ---------------------------------------------------------------------
 /* This is used to make the internationalization strings easier to translate
    and to allow reordering of parameters */
-void ioprintf(ostream &out,const char *format,...) 
+static bool iovprintf(ostream &out, const char *format,
+                     va_list &args, ssize_t &size) {
+   char *S = (char*)malloc(size);
+   ssize_t const n = vsnprintf(S, size, format, args);
+   if (n > -1 && n < size) {
+      out << S;
+      free(S);
+      return true;
+   } else {
+      if (n > -1)
+        size = n + 1;
+      else
+        size *= 2;
+   }
+   free(S);
+   return false;
+}
+void ioprintf(ostream &out,const char *format,...)
 {
    va_list args;
-   va_start(args,format);
-   
-   // sprintf the description
-   char S[4096];
-   vsnprintf(S,sizeof(S),format,args);
-   out << S;
+   ssize_t size = 400;
+   while (true) {
+      va_start(args,format);
+      if (iovprintf(out, format, args, size) == true)
+        return;
+      va_end(args);
+   }
 }
-                                                                       /*}}}*/
-// strprintf - C format string outputter to C++ strings                /*{{{*/
-// ---------------------------------------------------------------------
-/* This is used to make the internationalization strings easier to translate
-   and to allow reordering of parameters */
-void strprintf(string &out,const char *format,...) 
+void strprintf(string &out,const char *format,...)
 {
    va_list args;
-   va_start(args,format);
-   
-   // sprintf the description
-   char S[4096];
-   vsnprintf(S,sizeof(S),format,args);
-   out = string(S);
+   ssize_t size = 400;
+   std::ostringstream outstr;
+   while (true) {
+      va_start(args,format);
+      if (iovprintf(outstr, format, args, size) == true)
+        break;
+      va_end(args);
+   }
+   out = outstr.str();
 }
                                                                        /*}}}*/
 // safe_snprintf - Safer snprintf                                      /*{{{*/
@@ -1230,7 +1246,7 @@ string StripEpoch(const string &VerStr)
       return VerStr;
    return VerStr.substr(i+1);
 }
-
+                                                                       /*}}}*/
 // tolower_ascii - tolower() function that ignores the locale          /*{{{*/
 // ---------------------------------------------------------------------
 /* This little function is the most called method we have and tries
@@ -1268,14 +1284,14 @@ bool CheckDomainList(const string &Host,const string &List)
    return false;
 }
                                                                        /*}}}*/
-// DeEscapeString - unescape (\0XX and \xXX) from a string             /*{{{*/
+// 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;
+   string::const_iterator it;
+   string output;
    for (it = input.begin(); it != input.end(); ++it)
    {
       // just copy non-escape chars