prepare new release

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

diff --git a/apt-pkg/tagfile.cc b/apt-pkg/tagfile.cc
index 14682956654273124b333b9d9fea203c8324dc57..e0802e3d547e67666035e7d23409428fcca91b1c 100644 (file)
--- a/apt-pkg/tagfile.cc
+++ b/apt-pkg/tagfile.cc
@@ -11,55 +11,66 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/

-#ifdef __GNUG__
-#pragma implementation "apt-pkg/tagfile.h"
-#endif
+#include<config.h>

 
 #include <apt-pkg/tagfile.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
 
 #include <apt-pkg/tagfile.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>

+#include <apt-pkg/fileutl.h>

 
 

-#include <apti18n.h>
-    

 #include <string>
 #include <stdio.h>
 #include <ctype.h>
 #include <string>
 #include <stdio.h>
 #include <ctype.h>

+
+#include <apti18n.h>

                                                                        /*}}}*/
 
 using std::string;
 
                                                                        /*}}}*/
 
 using std::string;
 

+class pkgTagFilePrivate
+{
+public:
+   pkgTagFilePrivate(FileFd *pFd, unsigned long long Size) : Fd(*pFd), Buffer(NULL),
+                                                            Start(NULL), End(NULL),
+                                                            Done(false), iOffset(0),
+                                                            Size(Size)
+   {
+   }
+   FileFd &Fd;
+   char *Buffer;
+   char *Start;
+   char *End;
+   bool Done;
+   unsigned long long iOffset;
+   unsigned long long Size;
+};
+

 // TagFile::pkgTagFile - Constructor                                   /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // TagFile::pkgTagFile - Constructor                                   /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-pkgTagFile::pkgTagFile(FileFd *pFd,unsigned long Size) :
-     Fd(*pFd),
-     Size(Size),
-     Map(NULL),
-     Buffer(0)
+pkgTagFile::pkgTagFile(FileFd *pFd,unsigned long long Size)

 {
 {

-   if (Fd.IsOpen() == false)
-   {
-      Start = End = Buffer = 0;
-      Done = true;
-      iOffset = 0;
-      Map = NULL;
-      return;
-   }
-   
-   // check if we can MMap it
-   if(Fd.Size() == 0)
-   {
-      Buffer = new char[Size];
-      Start = End = Buffer;
-      Done = false;
+   /* The size is increased by 4 because if we start with the Size of the
+      filename we need to try to read 1 char more to see an EOF faster, 1
+      char the end-pointer can be on and maybe 2 newlines need to be added
+      to the end of the file -> 4 extra chars */
+   Size += 4;
+   d = new pkgTagFilePrivate(pFd, Size);
+
+   if (d->Fd.IsOpen() == false)
+      d->Start = d->End = d->Buffer = 0;
+   else
+      d->Buffer = (char*)malloc(sizeof(char) * Size);
+
+   if (d->Buffer == NULL)
+      d->Done = true;
+   else
+      d->Done = false;
+
+   d->Start = d->End = d->Buffer;
+   d->iOffset = 0;
+   if (d->Done == false)

       Fill();
       Fill();

-   } else {
-      Map = new MMap (Fd, MMap::Public | MMap::ReadOnly);
-      Buffer = (char *) Map->Data ();
-      Start = Buffer;
-      End = Buffer + Map->Size ();
-   }
-   iOffset = 0;

 }
                                                                        /*}}}*/
 // TagFile::~pkgTagFile - Destructor                                   /*{{{*/
 }
                                                                        /*}}}*/
 // TagFile::~pkgTagFile - Destructor                                   /*{{{*/


@@ -67,33 +78,68 @@ pkgTagFile::pkgTagFile(FileFd *pFd,unsigned long Size) :
 /* */
 pkgTagFile::~pkgTagFile()
 {
 /* */
 pkgTagFile::~pkgTagFile()
 {

-   if(!Map) delete [] Buffer;
-   delete Map;
+   free(d->Buffer);
+   delete d;

 }
                                                                        /*}}}*/
 }
                                                                        /*}}}*/

-// TagFile::Step - Advance to the next section                         /*{{{*/
+// TagFile::Offset - Return the current offset in the buffer           /*{{{*/
+unsigned long pkgTagFile::Offset()
+{
+   return d->iOffset;
+}
+                                                                       /*}}}*/
+// TagFile::Resize - Resize the internal buffer                                /*{{{*/

 // ---------------------------------------------------------------------
 // ---------------------------------------------------------------------

-/* If the Section Scanner fails we refill the buffer and try again. */
-bool pkgTagFile::Step(pkgTagSection &Tag)
+/* Resize the internal buffer (double it in size). Fail if a maximum size
+ * size is reached.
+ */
+bool pkgTagFile::Resize()

 {
 {

-   if ((Map != NULL) && (Start == End))
+   // fail is the buffer grows too big
+   if(d->Size > 1024*1024+1)

       return false;
 
       return false;
 

-   if (Tag.Scan(Start,End - Start) == false)
-   {
-      if (Map != NULL)
-        return _error->Error(_("Unable to parse package file %s (1)"),
-                             Fd.Name().c_str());
+   return Resize(d->Size * 2);
+}
+bool pkgTagFile::Resize(unsigned long long const newSize)
+{
+   unsigned long long const EndSize = d->End - d->Start;

 
 

+   // get new buffer and use it
+   char* newBuffer = (char*)realloc(d->Buffer, sizeof(char) * newSize);
+   if (newBuffer == NULL)
+      return false;
+   d->Buffer = newBuffer;
+   d->Size = newSize;
+
+   // update the start/end pointers to the new buffer
+   d->Start = d->Buffer;
+   d->End = d->Start + EndSize;
+   return true;
+}
+                                                                       /*}}}*/
+// TagFile::Step - Advance to the next section                         /*{{{*/
+// ---------------------------------------------------------------------
+/* If the Section Scanner fails we refill the buffer and try again. 
+ * If that fails too, double the buffer size and try again until a
+ * maximum buffer is reached.
+ */
+bool pkgTagFile::Step(pkgTagSection &Tag)
+{
+   while (Tag.Scan(d->Start,d->End - d->Start) == false)
+   {

       if (Fill() == false)
         return false;
       
       if (Fill() == false)
         return false;
       

-      if (Tag.Scan(Start,End - Start) == false)
+      if(Tag.Scan(d->Start,d->End - d->Start))
+        break;
+
+      if (Resize() == false)

         return _error->Error(_("Unable to parse package file %s (1)"),
         return _error->Error(_("Unable to parse package file %s (1)"),

-                             Fd.Name().c_str());
+                              d->Fd.Name().c_str());

    }
    }

-   Start += Tag.size();
-   iOffset += Tag.size();
+   d->Start += Tag.size();
+   d->iOffset += Tag.size();

 
    Tag.Trim();
    return true;
 
    Tag.Trim();
    return true;


@@ -105,37 +151,43 @@ bool pkgTagFile::Step(pkgTagSection &Tag)
    then fills the rest from the file */
 bool pkgTagFile::Fill()
 {
    then fills the rest from the file */
 bool pkgTagFile::Fill()
 {

-   unsigned long EndSize = End - Start;
-   unsigned long Actual = 0;
+   unsigned long long EndSize = d->End - d->Start;
+   unsigned long long Actual = 0;

    
    

-   memmove(Buffer,Start,EndSize);
-   Start = Buffer;
-   End = Buffer + EndSize;
+   memmove(d->Buffer,d->Start,EndSize);
+   d->Start = d->Buffer;
+   d->End = d->Buffer + EndSize;

    
    

-   if (Done == false)
+   if (d->Done == false)

    {
       // See if only a bit of the file is left
    {
       // See if only a bit of the file is left

-      if (Fd.Read(End,Size - (End - Buffer),&Actual) == false)
+      unsigned long long const dataSize = d->Size - ((d->End - d->Buffer) + 1);
+      if (d->Fd.Read(d->End, dataSize, &Actual) == false)

         return false;
         return false;

-      if (Actual != Size - (End - Buffer))
-        Done = true;
-      End += Actual;
+      if (Actual != dataSize)
+        d->Done = true;
+      d->End += Actual;

    }
    
    }
    

-   if (Done == true)
+   if (d->Done == true)

    {
       if (EndSize <= 3 && Actual == 0)
         return false;
    {
       if (EndSize <= 3 && Actual == 0)
         return false;

-      if (Size - (End - Buffer) < 4)
+      if (d->Size - (d->End - d->Buffer) < 4)

         return true;
       
       // Append a double new line if one does not exist
       unsigned int LineCount = 0;
         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--)
+      for (const char *E = d->End - 1; E - d->End < 6 && (*E == '\n' || *E == '\r'); E--)

         if (*E == '\n')
            LineCount++;
         if (*E == '\n')
            LineCount++;

-      for (; LineCount < 2; LineCount++)
-        *End++ = '\n';
+      if (LineCount < 2)
+      {
+        if ((unsigned)(d->End - d->Buffer) >= d->Size)
+           Resize(d->Size + 3);
+        for (; LineCount < 2; LineCount++)
+           *d->End++ = '\n';
+      }

       
       return true;
    }
       
       return true;
    }


@@ -147,72 +199,68 @@ bool pkgTagFile::Fill()
 // ---------------------------------------------------------------------
 /* This jumps to a pre-recorded file location and reads the record
    that is there */
 // ---------------------------------------------------------------------
 /* 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..
 {
    // We are within a buffer space of the next hit..

-   if (Offset >= iOffset && iOffset + (End - Start) > Offset)
+   if (Offset >= d->iOffset && d->iOffset + (d->End - d->Start) > Offset)

    {
    {

-      unsigned long Dist = Offset - iOffset;
-      Start += Dist;
-      iOffset += Dist;
+      unsigned long long Dist = Offset - d->iOffset;
+      d->Start += Dist;
+      d->iOffset += Dist;

       return Step(Tag);
    }
 
       return Step(Tag);
    }
 

-   iOffset = Offset;
-   if (Map != NULL)
-   {
-      Start = Buffer + iOffset;
-   } 
-   else 
-   {
-      // Reposition and reload..
-      Done = false;
-      if (Fd.Seek(Offset) == false)
-        return false;
-      End = Start = Buffer;
+   // Reposition and reload..
+   d->iOffset = Offset;
+   d->Done = false;
+   if (d->Fd.Seek(Offset) == false)
+      return false;
+   d->End = d->Start = d->Buffer;

    
    

-      if (Fill() == false)
-        return false;
+   if (Fill() == false)
+      return false;

 
 

-      if (Tag.Scan(Start,End - Start) == true)
-        return true;
+   if (Tag.Scan(d->Start, d->End - d->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());
+   // This appends a double new line (for the real eof handling)
+   if (Fill() == false)
+      return false;
+   
+   if (Tag.Scan(d->Start, d->End - d->Start) == false)
+      return _error->Error(_("Unable to parse package file %s (2)"),d->Fd.Name().c_str());

    
    return true;
 }
                                                                        /*}}}*/
    
    return true;
 }
                                                                        /*}}}*/

-// TagSection::Scan - Scan for the end of the header information       /*{{{*/
+// pkgTagSection::pkgTagSection - Constructor                          /*{{{*/

 // ---------------------------------------------------------------------
 // ---------------------------------------------------------------------

-/* This looks for the first double new line in the data stream. It also
-   indexes the tags in the section. This very simple hash function for the
-   first 3 letters gives very good performance on the debian package files */
-inline static unsigned long AlphaHash(const char *Text, const char *End = 0)
+/* */
+pkgTagSection::pkgTagSection()
+   : Section(0), TagCount(0), d(NULL), Stop(0)

 {
 {

-   unsigned long Res = 0;
-   for (; Text != End && *Text != ':' && *Text != 0; Text++)
-      Res = (unsigned long)(*Text) ^ (Res << 2);
-   return Res & 0xFF;
+   memset(&Indexes, 0, sizeof(Indexes));
+   memset(&AlphaIndexes, 0, sizeof(AlphaIndexes));

 }
 }

-
+                                                                       /*}}}*/
+// TagSection::Scan - Scan for the end of the header information       /*{{{*/
+// ---------------------------------------------------------------------
+/* This looks for the first double new line in the data stream.
+   It also indexes the tags in the section. */

 bool pkgTagSection::Scan(const char *Start,unsigned long MaxLength)
 {
    const char *End = Start + MaxLength;
    Stop = Section = Start;
    memset(AlphaIndexes,0,sizeof(AlphaIndexes));
 
 bool pkgTagSection::Scan(const char *Start,unsigned long MaxLength)
 {
    const char *End = Start + MaxLength;
    Stop = Section = Start;
    memset(AlphaIndexes,0,sizeof(AlphaIndexes));
 

-   if (Stop == 0 || MaxLength == 0)
+   if (Stop == 0)

       return false;
       return false;

-   
+

    TagCount = 0;
    while (TagCount+1 < sizeof(Indexes)/sizeof(Indexes[0]) && Stop < End)
    {
    TagCount = 0;
    while (TagCount+1 < sizeof(Indexes)/sizeof(Indexes[0]) && Stop < End)
    {

+       TrimRecord(true,End);
+

       // Start a new index and add it to the hash
       if (isspace(Stop[0]) == 0)
       {
       // Start a new index and add it to the hash
       if (isspace(Stop[0]) == 0)
       {


@@ -224,29 +272,33 @@ bool pkgTagSection::Scan(const char *Start,unsigned long MaxLength)
       
       if (Stop == 0)
         return false;
       
       if (Stop == 0)
         return false;

-      
+

       for (; Stop+1 < End && Stop[1] == '\r'; Stop++);
 
       // Double newline marks the end of the record
       if (Stop+1 < End && Stop[1] == '\n')
       {
         Indexes[TagCount] = Stop - Section;
       for (; Stop+1 < End && Stop[1] == '\r'; Stop++);
 
       // Double newline marks the end of the record
       if (Stop+1 < End && Stop[1] == '\n')
       {
         Indexes[TagCount] = Stop - Section;

-        for (; Stop < End && (Stop[0] == '\n' || Stop[0] == '\r'); Stop++);
+        TrimRecord(false,End);

         return true;
       }
       
       Stop++;
    }
 
         return true;
       }
       
       Stop++;
    }
 

-   if ((Stop+1 >= End) && (End[-1] == '\n' || End[-1] == '\r'))
-   {
-      Indexes[TagCount] = (End - 1) - Section;
-      return true;
-   }
-

    return false;
 }
                                                                        /*}}}*/
    return false;
 }
                                                                        /*}}}*/

+// TagSection::TrimRecord - Trim off any garbage before/after a record /*{{{*/
+// ---------------------------------------------------------------------
+/* There should be exactly 2 newline at the end of the record, no more. */
+void pkgTagSection::TrimRecord(bool BeforeRecord, const char*& End)
+{
+   if (BeforeRecord == true)
+      return;
+   for (; Stop < End && (Stop[0] == '\n' || Stop[0] == '\r'); Stop++);
+}
+                                                                       /*}}}*/

 // TagSection::Trim - Trim off any trailing garbage                    /*{{{*/
 // ---------------------------------------------------------------------
 /* There should be exactly 1 newline at the end of the buffer, no more. */
 // TagSection::Trim - Trim off any trailing garbage                    /*{{{*/
 // ---------------------------------------------------------------------
 /* There should be exactly 1 newline at the end of the buffer, no more. */


@@ -255,10 +307,17 @@ void pkgTagSection::Trim()
    for (; Stop > Section + 2 && (Stop[-2] == '\n' || Stop[-2] == '\r'); Stop--);
 }
                                                                        /*}}}*/
    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. */
 // 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)];
 {
    unsigned int Length = strlen(Tag);
    unsigned int I = AlphaIndexes[AlphaHash(Tag)];


@@ -365,6 +424,30 @@ signed int pkgTagSection::FindI(const char *Tag,signed long Default) const
    return Result;
 }
                                                                        /*}}}*/
    return Result;
 }
                                                                        /*}}}*/

+// TagSection::FindULL - Find an unsigned long long integer            /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+unsigned long long pkgTagSection::FindULL(const char *Tag, unsigned long long const &Default) const
+{
+   const char *Start;
+   const char *Stop;
+   if (Find(Tag,Start,Stop) == false)
+      return Default;
+
+   // Copy it into a temp buffer so we can use strtoull
+   char S[100];
+   if ((unsigned)(Stop - Start) >= sizeof(S))
+      return Default;
+   strncpy(S,Start,Stop-Start);
+   S[Stop - Start] = 0;
+   
+   char *End;
+   unsigned long long Result = strtoull(S,&End,10);
+   if (S == End)
+      return Default;
+   return Result;
+}
+                                                                       /*}}}*/

 // TagSection::FindFlag - Locate a yes/no type flag                    /*{{{*/
 // ---------------------------------------------------------------------
 /* The bits marked in Flag are masked on/off in Flags */
 // TagSection::FindFlag - Locate a yes/no type flag                    /*{{{*/
 // ---------------------------------------------------------------------
 /* The bits marked in Flag are masked on/off in Flags */


@@ -375,9 +458,13 @@ bool pkgTagSection::FindFlag(const char *Tag,unsigned long &Flags,
    const char *Stop;
    if (Find(Tag,Start,Stop) == false)
       return true;
    const char *Stop;
    if (Find(Tag,Start,Stop) == false)
       return true;

-   
-   switch (StringToBool(string(Start,Stop)))
-   {     
+   return FindFlag(Flags, Flag, Start, Stop);
+}
+bool const pkgTagSection::FindFlag(unsigned long &Flags, unsigned long Flag,
+                                       char const* Start, char const* Stop)
+{
+   switch (StringToBool(string(Start, Stop)))
+   {

       case 0:
       Flags &= ~Flag;
       return true;
       case 0:
       Flags &= ~Flag;
       return true;


@@ -393,7 +480,6 @@ bool pkgTagSection::FindFlag(const char *Tag,unsigned long &Flags,
    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/

-

 // TFRewrite - Rewrite a control record                                        /*{{{*/
 // ---------------------------------------------------------------------
 /* This writes the control record to stdout rewriting it as necessary. The
 // TFRewrite - Rewrite a control record                                        /*{{{*/
 // ---------------------------------------------------------------------
 /* This writes the control record to stdout rewriting it as necessary. The


@@ -410,6 +496,7 @@ static const char *iTFRewritePackageOrder[] = {
                           "Section",
                           "Installed-Size",
                           "Maintainer",
                           "Section",
                           "Installed-Size",
                           "Maintainer",

+                          "Original-Maintainer",

                           "Architecture",
                           "Source",
                           "Version",
                           "Architecture",
                           "Source",
                           "Version",


@@ -429,6 +516,7 @@ static const char *iTFRewritePackageOrder[] = {
                           "MD5Sum",
                           "SHA1",
                           "SHA256",
                           "MD5Sum",
                           "SHA1",
                           "SHA256",

+                          "SHA512",

                            "MSDOS-Filename",   // Obsolete
                           "Description",
                           0};
                            "MSDOS-Filename",   // Obsolete
                           "Description",
                           0};


@@ -439,6 +527,7 @@ static const char *iTFRewriteSourceOrder[] = {"Package",
                                       "Priority",
                                       "Section",
                                       "Maintainer",
                                       "Priority",
                                       "Section",
                                       "Maintainer",

+                                     "Original-Maintainer",

                                       "Build-Depends",
                                       "Build-Depends-Indep",
                                       "Build-Conflicts",
                                       "Build-Depends",
                                       "Build-Depends-Indep",
                                       "Build-Conflicts",