improve pkgTagSection scanning and parsing

[apt.git] / cmdline / apt-extracttemplates.cc

diff --git a/cmdline/apt-extracttemplates.cc b/cmdline/apt-extracttemplates.cc
index 2408a7d9d8f333b94dcdc84e005aa0b557b75466..7be59b9f81cae3cf7b1b7a2002fa843b308209e4 100644 (file)
--- a/cmdline/apt-extracttemplates.cc
+++ b/cmdline/apt-extracttemplates.cc
@@ -18,8 +18,8 @@
 #include <apt-pkg/init.h>
 #include <apt-pkg/cmndline.h>
 #include <apt-pkg/pkgcache.h>
+#include <apt-pkg/cacheiterators.h>
 #include <apt-pkg/configuration.h>
-#include <apt-pkg/progress.h>
 #include <apt-pkg/sourcelist.h>
 #include <apt-pkg/pkgcachegen.h>
 #include <apt-pkg/version.h>
@@ -30,14 +30,14 @@
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/pkgsystem.h>
+#include <apt-pkg/dirstream.h>
+#include <apt-pkg/mmap.h>
 
+#include <iostream>
 #include <stdio.h>
 #include <string.h>
-#include <stdlib.h>
 #include <unistd.h>
-#include <locale.h>
-
-#include <fstream>
+#include <stdlib.h>
 
 #include "apt-extracttemplates.h"
 
@@ -103,10 +103,12 @@ bool DebFile::DoItem(Item &I, int &Fd)
        if (strcmp(I.Name, "control") == 0)
        {
                delete [] Control;
-               Control = new char[I.Size+1];
-               Control[I.Size] = 0;
+               Control = new char[I.Size+3];
+               Control[I.Size] = '\n';
+               Control[I.Size + 1] = '\n';
+               Control[I.Size + 2] = '\0';
                Which = IsControl;
-               ControlLen = I.Size;
+               ControlLen = I.Size + 3;
                // make it call the Process method below. this is so evil
                Fd = -2;
        }
@@ -137,7 +139,7 @@ bool DebFile::DoItem(Item &I, int &Fd)
 // DebFile::Process examine element in package and copy                        /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool DebFile::Process(Item &I, const unsigned char *data, 
+bool DebFile::Process(Item &/*I*/, const unsigned char *data,
                unsigned long size, unsigned long pos)
 {
        switch (Which)
@@ -162,9 +164,10 @@ bool DebFile::Process(Item &I, const unsigned char *data,
 bool DebFile::ParseInfo()
 {
        if (Control == NULL) return false;
-       
+
        pkgTagSection Section;
-       Section.Scan(Control, ControlLen);
+       if (Section.Scan(Control, ControlLen) == false)
+               return false;
 
        Package = Section.FindS("Package");
        Version = GetInstalledVer(Package);
@@ -212,7 +215,7 @@ bool DebFile::ParseInfo()
 // ShowHelp - show a short help text                                   /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-int ShowHelp(void)
+static int ShowHelp(void)
 {
        ioprintf(cout,_("%s %s for %s compiled on %s %s\n"),PACKAGE,PACKAGE_VERSION,
            COMMON_ARCH,__DATE__,__TIME__);
@@ -237,26 +240,28 @@ int ShowHelp(void)
 // WriteFile - write the contents of the passed string to a file       /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-string WriteFile(const char *package, const char *prefix, const char *data)
+static string WriteFile(const char *package, const char *prefix, const char *data)
 {
        char fn[512];
-       static int i;
 
         std::string tempdir = GetTempDir();
-       snprintf(fn, sizeof(fn), "%s/%s.%s.%u%d",
+       snprintf(fn, sizeof(fn), "%s/%s.%s.XXXXXX",
                  _config->Find("APT::ExtractTemplates::TempDir", 
                                tempdir.c_str()).c_str(),
-                 package, prefix, getpid(), i++);
+                 package, prefix);
        FileFd f;
        if (data == NULL)
                data = "";
-
-       if (!f.Open(fn, FileFd::WriteTemp, 0600))
+        int fd = mkstemp(fn);
+        if (fd < 0) {
+               _error->Errno("ofstream::ofstream",_("Unable to mkstemp %s"),fn);
+                return string();
+        }
+       if (!f.OpenDescriptor(fd, FileFd::WriteOnly, FileFd::None, true))
        {
                _error->Errno("ofstream::ofstream",_("Unable to write to %s"),fn);
                return string();
        }
-
        f.Write(data, strlen(data));
        f.Close();
        return fn;
@@ -265,7 +270,7 @@ string WriteFile(const char *package, const char *prefix, const char *data)
 // WriteConfig - write out the config data from a debian package file  /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-void WriteConfig(const DebFile &file)
+static void WriteConfig(const DebFile &file)
 {
        string templatefile = WriteFile(file.Package.c_str(), "template", file.Template);
        string configscript = WriteFile(file.Package.c_str(), "config", file.Config);
@@ -279,7 +284,7 @@ void WriteConfig(const DebFile &file)
 // InitCache - initialize the package cache                            /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool Go(CommandLine &CmdL)
+static bool Go(CommandLine &CmdL)
 {      
        // Initialize the apt cache
        MMap *Map = 0;