cherry pick 39a07ec8f2c612a5af234c7713571362f7ca90b4

[apt.git] / apt-pkg / tagfile.cc

diff --git a/apt-pkg/tagfile.cc b/apt-pkg/tagfile.cc
index 3b491fcd2aca8648e1d73fbfd4529b4ff163f29f..1c79ee74ffaecc559f2a2daad8a4f63d30bdcce2 100644 (file)
--- a/apt-pkg/tagfile.cc
+++ b/apt-pkg/tagfile.cc
@@ -16,6 +16,7 @@
 #include <apt-pkg/tagfile.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
+#include <apt-pkg/fileutl.h>
 
 #include <string>
 #include <stdio.h>
@@ -29,7 +30,10 @@ using std::string;
 class pkgTagFilePrivate
 {
 public:
-   pkgTagFilePrivate(FileFd *pFd, unsigned long Size) : Fd(*pFd), Size(Size)
+   pkgTagFilePrivate(FileFd *pFd, unsigned long long Size) : Fd(*pFd), Buffer(NULL),
+                                                            Start(NULL), End(NULL),
+                                                            Done(false), iOffset(0),
+                                                            Size(Size)
    {
    }
    FileFd &Fd;
@@ -37,14 +41,14 @@ public:
    char *Start;
    char *End;
    bool Done;
-   unsigned long iOffset;
-   unsigned long Size;
+   unsigned long long iOffset;
+   unsigned long long Size;
 };
 
 // TagFile::pkgTagFile - Constructor                                   /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-pkgTagFile::pkgTagFile(FileFd *pFd,unsigned long Size)
+pkgTagFile::pkgTagFile(FileFd *pFd,unsigned long long Size)
 {
    d = new pkgTagFilePrivate(pFd, Size);
 
@@ -86,7 +90,7 @@ unsigned long pkgTagFile::Offset()
 bool pkgTagFile::Resize()
 {
    char *tmp;
-   unsigned long EndSize = d->End - d->Start;
+   unsigned long long EndSize = d->End - d->Start;
 
    // fail is the buffer grows too big
    if(d->Size > 1024*1024+1)
@@ -138,8 +142,8 @@ bool pkgTagFile::Step(pkgTagSection &Tag)
    then fills the rest from the file */
 bool pkgTagFile::Fill()
 {
-   unsigned long EndSize = d->End - d->Start;
-   unsigned long Actual = 0;
+   unsigned long long EndSize = d->End - d->Start;
+   unsigned long long Actual = 0;
    
    memmove(d->Buffer,d->Start,EndSize);
    d->Start = d->Buffer;
@@ -180,12 +184,12 @@ bool pkgTagFile::Fill()
 // ---------------------------------------------------------------------
 /* This jumps to a pre-recorded file location and reads the record
    that is there */
-bool pkgTagFile::Jump(pkgTagSection &Tag,unsigned long Offset)
+bool pkgTagFile::Jump(pkgTagSection &Tag,unsigned long long Offset)
 {
    // We are within a buffer space of the next hit..
    if (Offset >= d->iOffset && d->iOffset + (d->End - d->Start) > Offset)
    {
-      unsigned long Dist = Offset - d->iOffset;
+      unsigned long long Dist = Offset - d->iOffset;
       d->Start += Dist;
       d->iOffset += Dist;
       return Step(Tag);
@@ -278,10 +282,17 @@ void pkgTagSection::Trim()
    for (; Stop > Section + 2 && (Stop[-2] == '\n' || Stop[-2] == '\r'); Stop--);
 }
                                                                        /*}}}*/
+// TagSection::Exists - return True if a tag exists                    /*{{{*/
+bool pkgTagSection::Exists(const char* const Tag)
+{
+   unsigned int tmp;
+   return Find(Tag, tmp);
+}
+                                                                       /*}}}*/
 // TagSection::Find - Locate a tag                                     /*{{{*/
 // ---------------------------------------------------------------------
 /* This searches the section for a tag that matches the given string. */
-bool pkgTagSection::Find(const char *Tag,unsigned &Pos) const
+bool pkgTagSection::Find(const char *Tag,unsigned int &Pos) const
 {
    unsigned int Length = strlen(Tag);
    unsigned int I = AlphaIndexes[AlphaHash(Tag)];