correct some style/performance/warnings from cppcheck

The most "visible" change is from utime to utimensat/futimens
as the first one isn't part of POSIX anymore.

Reported-By: cppcheck
Git-Dch: Ignore

6 files changed, 12 insertions, 18 deletions

diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index efbf7aaf4..1c8acd513 100644
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -319,7 +319,7 @@ bool CreateDirectory(string const &Parent, string const &Path)
       return false;
 
    // we are not going to create directories "into the blue"
-   if (Path.find(Parent, 0) != 0)
+   if (Path.compare(0, Parent.length(), Parent) != 0)
       return false;
 
    vector<string> const dirs = VectorizeString(Path.substr(Parent.size()), '/');
diff --git a/apt-pkg/contrib/gpgv.cc b/apt-pkg/contrib/gpgv.cc
index 0a469dd7a..9de227062 100644
--- a/apt-pkg/contrib/gpgv.cc
+++ b/apt-pkg/contrib/gpgv.cc
@@ -260,8 +260,7 @@ bool SplitClearSignedFile(std::string const &InFile, FileFd * const ContentFile,
 
    char *buf = NULL;
    size_t buf_size = 0;
-   ssize_t line_len = 0;
-   while ((line_len = getline(&buf, &buf_size, in)) != -1)
+   while (getline(&buf, &buf_size, in) != -1)
    {
       _strrstrip(buf);
       if (found_message_start == false)
@@ -355,7 +354,7 @@ bool OpenMaybeClearSignedFile(std::string const &ClearSignedFileName, FileFd &Me
       return _error->Error("Couldn't open temporary file to work with %s", ClearSignedFileName.c_str());
 
    _error->PushToStack();
-   bool const splitDone = SplitClearSignedFile(ClearSignedFileName.c_str(), &MessageFile, NULL, NULL);
+   bool const splitDone = SplitClearSignedFile(ClearSignedFileName, &MessageFile, NULL, NULL);
    bool const errorDone = _error->PendingError();
    _error->MergeWithStack();
    if (splitDone == false)
diff --git a/apt-pkg/contrib/hashes.cc b/apt-pkg/contrib/hashes.cc
index b4c768db9..890573d9c 100644
--- a/apt-pkg/contrib/hashes.cc
+++ b/apt-pkg/contrib/hashes.cc
@@ -129,13 +129,12 @@ bool Hashes::AddFD(int const Fd,unsigned long long Size, bool const addMD5,
 		   bool const addSHA1, bool const addSHA256, bool const addSHA512)
 {
    unsigned char Buf[64*64];
-   ssize_t Res = 0;
-   int ToEOF = (Size == 0);
+   bool const ToEOF = (Size == 0);
    while (Size != 0 || ToEOF)
    {
       unsigned long long n = sizeof(Buf);
       if (!ToEOF) n = std::min(Size, n);
-      Res = read(Fd,Buf,n);
+      ssize_t const Res = read(Fd,Buf,n);
       if (Res < 0 || (!ToEOF && Res != (ssize_t) n)) // error, or short read
 	 return false;
       if (ToEOF && Res == 0) // EOF
diff --git a/apt-pkg/contrib/hashsum.cc b/apt-pkg/contrib/hashsum.cc
index 289e43aa4..d02177724 100644
--- a/apt-pkg/contrib/hashsum.cc
+++ b/apt-pkg/contrib/hashsum.cc
@@ -9,13 +9,12 @@
 /* */
 bool SummationImplementation::AddFD(int const Fd, unsigned long long Size) {
    unsigned char Buf[64 * 64];
-   ssize_t Res = 0;
-   int ToEOF = (Size == 0);
+   bool const ToEOF = (Size == 0);
    while (Size != 0 || ToEOF)
    {
       unsigned long long n = sizeof(Buf);
       if (!ToEOF) n = std::min(Size, n);
-      Res = read(Fd, Buf, n);
+      ssize_t const Res = read(Fd, Buf, n);
       if (Res < 0 || (!ToEOF && Res != (ssize_t) n)) // error, or short read
 	 return false;
       if (ToEOF && Res == 0) // EOF
@@ -27,7 +26,7 @@ bool SummationImplementation::AddFD(int const Fd, unsigned long long Size) {
 }
 bool SummationImplementation::AddFD(FileFd &Fd, unsigned long long Size) {
    unsigned char Buf[64 * 64];
-   bool ToEOF = (Size == 0);
+   bool const ToEOF = (Size == 0);
    while (Size != 0 || ToEOF)
    {
       unsigned long long n = sizeof(Buf);
diff --git a/apt-pkg/deb/dpkgpm.cc b/apt-pkg/deb/dpkgpm.cc
index 14ce133cf..1967d5d26 100644
--- a/apt-pkg/deb/dpkgpm.cc
+++ b/apt-pkg/deb/dpkgpm.cc
@@ -568,7 +568,6 @@ void pkgDPkgPM::ProcessDpkgStatusLine(char *line)
    std::string prefix = APT::String::Strip(list[0]);
    std::string pkgname;
    std::string action;
-   ostringstream status;
 
    // "processing" has the form "processing: action: pkg or trigger"
    // with action = ["install", "configure", "remove", "purge", "disappear",
@@ -1652,7 +1651,7 @@ void pkgDPkgPM::WriteApportReport(const char *pkgpath, const char *errormsg)
    io_errors.push_back(string("failed in write on buffer copy for %s"));
    io_errors.push_back(string("short read on buffer copy for %s"));
 
-   for (vector<string>::iterator I = io_errors.begin(); I != io_errors.end(); I++)
+   for (vector<string>::iterator I = io_errors.begin(); I != io_errors.end(); ++I)
    {
       vector<string> list = VectorizeString(dgettext("dpkg", (*I).c_str()), '%');
       if (list.size() > 1) {
@@ -1767,13 +1766,11 @@ void pkgDPkgPM::WriteApportReport(const char *pkgpath, const char *errormsg)
    string histfile_name = _config->FindFile("Dir::Log::History");
    if (!histfile_name.empty())
    {
-      FILE *log = NULL;
-      char buf[1024];
-
       fprintf(report, "DpkgHistoryLog:\n");
-      log = fopen(histfile_name.c_str(),"r");
+      FILE* log = fopen(histfile_name.c_str(),"r");
       if(log != NULL)
       {
+	 char buf[1024];
 	 while( fgets(buf, sizeof(buf), log) != NULL)
 	    fprintf(report, " %s", buf);
 	 fclose(log);
diff --git a/apt-pkg/install-progress.cc b/apt-pkg/install-progress.cc
index fe065da4f..a3a4cc0e1 100644
--- a/apt-pkg/install-progress.cc
+++ b/apt-pkg/install-progress.cc
@@ -242,7 +242,7 @@ PackageManagerFancy::~PackageManagerFancy()
 void PackageManagerFancy::staticSIGWINCH(int signum)
 {
    std::vector<PackageManagerFancy *>::const_iterator I;
-   for(I = instances.begin(); I != instances.end(); I++)
+   for(I = instances.begin(); I != instances.end(); ++I)
       (*I)->HandleSIGWINCH(signum);
 }