some more coverity fixes

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

diff --git a/apt-pkg/contrib/cmndline.cc b/apt-pkg/contrib/cmndline.cc
index 997f26bc7541b61a2d106256658c94d82c0a69e8..d77ef454056e78e3e6be31ff46781edf3fb20465 100644 (file)
--- a/apt-pkg/contrib/cmndline.cc
+++ b/apt-pkg/contrib/cmndline.cc
@@ -90,24 +90,24 @@ bool CommandLine::Parse(int argc,const char **argv)
       Opt++;
 
       // Match up to a = against the list
-      const char *OptEnd = Opt;
       Args *A;
-      for (; *OptEnd != 0 && *OptEnd != '='; OptEnd++);
-      for (A = ArgList; A->end() == false && 
-          stringcasecmp(Opt,OptEnd,A->LongOpt) != 0; A++);
+      const char *OptEnd = strchrnul(Opt, '=');
+      for (A = ArgList; A->end() == false &&
+          (A->LongOpt == 0 || stringcasecmp(Opt,OptEnd,A->LongOpt) != 0);
+          ++A);
       
       // Failed, look for a word after the first - (no-foo)
       bool PreceedMatch = false;
       if (A->end() == true)
       {
-        for (; Opt != OptEnd && *Opt != '-'; Opt++);
-
-        if (Opt == OptEnd)
+         Opt = (const char*) memchr(Opt, '-', OptEnd - Opt);
+        if (Opt == NULL)
            return _error->Error(_("Command line option %s is not understood"),argv[I]);
         Opt++;
         
         for (A = ArgList; A->end() == false &&
-             stringcasecmp(Opt,OptEnd,A->LongOpt) != 0; A++);
+             (A->LongOpt == 0 || stringcasecmp(Opt,OptEnd,A->LongOpt) != 0);
+             ++A);
 
         // Failed again..
         if (A->end() == true && OptEnd - Opt != 1)
@@ -197,9 +197,8 @@ bool CommandLine::HandleOpt(int &I,int argc,const char *argv[],
       // Arbitrary item specification
       if ((A->Flags & ArbItem) == ArbItem)
       {
-        const char *J;
-        for (J = Argument; *J != 0 && *J != '='; J++);
-        if (*J == 0)
+        const char *J = strchr(Argument, '=');
+        if (J == NULL)
            return _error->Error(_("Option %s: Configuration item specification must have an =<val>."),argv[I]);
 
         // = is trailing
@@ -215,8 +214,7 @@ bool CommandLine::HandleOpt(int &I,int argc,const char *argv[],
         return true;
       }
       
-      const char *I = A->ConfName;
-      for (; *I != 0 && *I != ' '; I++);
+      const char *I = strchrnul(A->ConfName, ' ');
       if (*I == ' ')
         Conf->Set(string(A->ConfName,0,I-A->ConfName),string(I+1) + Argument);
       else
@@ -272,10 +270,9 @@ bool CommandLine::HandleOpt(int &I,int argc,const char *argv[],
         // Skip the leading dash
         const char *J = argv[I];
         for (; *J != 0 && *J == '-'; J++);
-        
-        const char *JEnd = J;
-        for (; *JEnd != 0 && *JEnd != '-'; JEnd++);
-        if (*JEnd != 0)
+
+        const char *JEnd = strchr(J, '-');
+        if (JEnd != NULL)
         {
            strncpy(Buffer,J,JEnd - J);
            Buffer[JEnd - J] = 0;
@@ -364,6 +361,7 @@ bool CommandLine::DispatchArg(Dispatch *Map,bool NoMatch)
 void CommandLine::SaveInConfig(unsigned int const &argc, char const * const * const argv)
 {
    char cmdline[100 + argc * 50];
+   memset(cmdline, 0, sizeof(cmdline));
    unsigned int length = 0;
    bool lastWasOption = false;
    bool closeQuote = false;
@@ -376,9 +374,8 @@ void CommandLine::SaveInConfig(unsigned int const &argc, char const * const * co
         {
            // That is possibly an option: Quote it if it includes spaces,
            // the benefit is that this will eliminate also most false positives
-           const char* c = &argv[i][j+1];
-           for (; *c != '\0' && *c != ' '; ++c);
-           if (*c == '\0') continue;
+           const char* c = strchr(&argv[i][j+1], ' ');
+           if (c == NULL) continue;
            cmdline[++length] = '"';
            closeQuote = true;
         }