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-rw-r--r--data/_apt7/mmap.diff199
1 files changed, 199 insertions, 0 deletions
diff --git a/data/_apt7/mmap.diff b/data/_apt7/mmap.diff
new file mode 100644
index 000000000..06f4dbac0
--- /dev/null
+++ b/data/_apt7/mmap.diff
@@ -0,0 +1,199 @@
+diff -ru apt-0.7.20.2/apt-pkg/tagfile.cc apt-0.7.20.2+iPhone/apt-pkg/tagfile.cc
+--- apt-0.7.20.2/apt-pkg/tagfile.cc 2009-04-19 02:42:49.000000000 +0000
++++ apt-0.7.20.2+iPhone/apt-pkg/tagfile.cc 2009-04-19 03:28:33.000000000 +0000
+@@ -28,11 +28,12 @@
+ // ---------------------------------------------------------------------
+ /* */
+ pkgTagFile::pkgTagFile(FileFd *pFd,unsigned long Size) :
+- Fd(*pFd),
+- Size(Size)
++ Fd(*pFd)
+ {
+- if (Fd.IsOpen() == false)
++ if (Fd.IsOpen() == false || Fd.Size() == 0)
+ {
++ _error->Discard();
++ Map = NULL;
+ Buffer = 0;
+ Start = End = Buffer = 0;
+ Done = true;
+@@ -40,7 +40,8 @@
+ return;
+ }
+
+- Buffer = new char[Size];
++ Map = new MMap(*pFd, MMap::ReadOnly);
++ Buffer = reinterpret_cast<char *>(Map->Data());
+ Start = End = Buffer;
+ Done = false;
+ iOffset = 0;
+@@ -52,36 +53,9 @@
+ /* */
+ pkgTagFile::~pkgTagFile()
+ {
+- delete [] Buffer;
++ delete Map;
+ }
+ /*}}}*/
+-// TagFile::Resize - Resize the internal buffer /*{{{*/
+-// ---------------------------------------------------------------------
+-/* Resize the internal buffer (double it in size). Fail if a maximum size
+- * size is reached.
+- */
+-bool pkgTagFile::Resize()
+-{
+- char *tmp;
+- unsigned long EndSize = End - Start;
+-
+- // fail is the buffer grows too big
+- if(Size > 1024*1024+1)
+- return false;
+-
+- // get new buffer and use it
+- tmp = new char[2*Size];
+- memcpy(tmp, Buffer, Size);
+- Size = Size*2;
+- delete [] Buffer;
+- Buffer = tmp;
+-
+- // update the start/end pointers to the new buffer
+- Start = Buffer;
+- End = Start + EndSize;
+- return true;
+-}
+-
+ // TagFile::Step - Advance to the next section /*{{{*/
+ // ---------------------------------------------------------------------
+ /* If the Section Scanner fails we refill the buffer and try again.
+@@ -90,15 +64,11 @@
+ */
+ bool pkgTagFile::Step(pkgTagSection &Tag)
+ {
+- while (Tag.Scan(Start,End - Start) == false)
++ if (Tag.Scan(Start,End - Start) == false)
+ {
+- if (Fill() == false)
+- return false;
+-
+- if(Tag.Scan(Start,End - Start))
+- break;
+-
+- if (Resize() == false)
++ if (Start == End)
++ return false;
++ else
+ return _error->Error(_("Unable to parse package file %s (1)"),
+ Fd.Name().c_str());
+ }
+@@ -115,41 +85,11 @@
+ then fills the rest from the file */
+ bool pkgTagFile::Fill()
+ {
+- unsigned long EndSize = End - Start;
+- unsigned long Actual = 0;
+-
+- memmove(Buffer,Start,EndSize);
+- Start = Buffer;
+- End = Buffer + EndSize;
+-
+- if (Done == false)
+- {
+- // See if only a bit of the file is left
+- if (Fd.Read(End,Size - (End - Buffer),&Actual) == false)
+- return false;
+- if (Actual != Size - (End - Buffer))
+- Done = true;
+- End += Actual;
+- }
+-
+- if (Done == true)
+- {
+- if (EndSize <= 3 && Actual == 0)
+- return false;
+- if (Size - (End - Buffer) < 4)
+- return true;
+-
+- // Append a double new line if one does not exist
+- unsigned int LineCount = 0;
+- for (const char *E = End - 1; E - End < 6 && (*E == '\n' || *E == '\r'); E--)
+- if (*E == '\n')
+- LineCount++;
+- for (; LineCount < 2; LineCount++)
+- *End++ = '\n';
+-
+- return true;
+- }
+-
++ unsigned int Size(Map->Size());
++ End = Buffer + Size;
++ if (iOffset >= Size)
++ return false;
++ Start = Buffer + iOffset;
+ return true;
+ }
+ /*}}}*/
+@@ -171,20 +111,11 @@
+ // Reposition and reload..
+ iOffset = Offset;
+ Done = false;
+- if (Fd.Seek(Offset) == false)
+- return false;
+ End = Start = Buffer;
+
+ if (Fill() == false)
+ return false;
+
+- if (Tag.Scan(Start,End - Start) == true)
+- return true;
+-
+- // This appends a double new line (for the real eof handling)
+- if (Fill() == false)
+- return false;
+-
+ if (Tag.Scan(Start,End - Start) == false)
+ return _error->Error(_("Unable to parse package file %s (2)"),Fd.Name().c_str());
+
+@@ -228,14 +161,16 @@
+
+ Stop = (const char *)memchr(Stop,'\n',End - Stop);
+
+- if (Stop == 0)
+- return false;
++ if (Stop == 0) {
++ Stop = End;
++ goto end;
++ }
+
+ for (; Stop+1 < End && Stop[1] == '\r'; Stop++);
+
+ // Double newline marks the end of the record
+- if (Stop+1 < End && Stop[1] == '\n')
+- {
++ if (Stop+1 == End || Stop[1] == '\n')
++ end: {
+ Indexes[TagCount] = Stop - Section;
+ for (; Stop < End && (Stop[0] == '\n' || Stop[0] == '\r'); Stop++);
+ return true;
+diff -ru apt-0.7.20.2/apt-pkg/tagfile.h apt-0.7.20.2+iPhone/apt-pkg/tagfile.h
+--- apt-0.7.20.2/apt-pkg/tagfile.h 2009-02-07 15:09:35.000000000 +0000
++++ apt-0.7.20.2+iPhone/apt-pkg/tagfile.h 2009-04-19 03:04:07.000000000 +0000
+@@ -21,6 +21,7 @@
+ #define PKGLIB_TAGFILE_H
+
+
++#include <apt-pkg/mmap.h>
+ #include <apt-pkg/fileutl.h>
+ #include <stdio.h>
+
+@@ -71,10 +72,9 @@
+ char *End;
+ bool Done;
+ unsigned long iOffset;
+- unsigned long Size;
++ MMap *Map;
+
+ bool Fill();
+- bool Resize();
+
+ public:
+