deal with configured build-essential first

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

diff --git a/apt-pkg/tagfile.cc b/apt-pkg/tagfile.cc
index 9c40c8c92d088866b86c7dd3ec9f7750d2b52016..8acecd735f9da90642a3f2a29e0b3766c5295f97 100644 (file)
--- a/apt-pkg/tagfile.cc
+++ b/apt-pkg/tagfile.cc
@@ -32,19 +32,36 @@ using std::string;
 class pkgTagFilePrivate
 {
 public:
 class pkgTagFilePrivate
 {
 public:

-   pkgTagFilePrivate(FileFd *pFd, unsigned long long Size) : Fd(*pFd), Buffer(NULL),
-                                                            Start(NULL), End(NULL),
-                                                            Done(false), iOffset(0),
-                                                            Size(Size)
+   void Reset(FileFd * const pFd, unsigned long long const pSize)

    {
    {

+      if (Buffer != NULL)
+        free(Buffer);
+      Buffer = NULL;
+      Fd = pFd;
+      Start = NULL;
+      End = NULL;
+      Done = false;
+      iOffset = 0;
+      Size = pSize;

    }
    }

-   FileFd &Fd;
+
+   pkgTagFilePrivate(FileFd * const pFd, unsigned long long const Size) : Buffer(NULL)
+   {
+      Reset(pFd, Size);
+   }
+   FileFd * Fd;

    char *Buffer;
    char *Start;
    char *End;
    bool Done;
    unsigned long long iOffset;
    unsigned long long Size;
    char *Buffer;
    char *Start;
    char *End;
    bool Done;
    unsigned long long iOffset;
    unsigned long long Size;

+
+   ~pkgTagFilePrivate()
+   {
+      if (Buffer != NULL)
+        free(Buffer);
+   }

 };
 
 class pkgTagSectionPrivate
 };
 
 class pkgTagSectionPrivate


@@ -59,7 +76,7 @@ public:
       unsigned int StartValue;
       unsigned int NextInBucket;
 
       unsigned int StartValue;
       unsigned int NextInBucket;
 

-      TagData(unsigned int const StartTag) : StartTag(StartTag), EndTag(0), StartValue(0), NextInBucket(0) {}
+      explicit TagData(unsigned int const StartTag) : StartTag(StartTag), EndTag(0), StartValue(0), NextInBucket(0) {}

    };
    std::vector<TagData> Tags;
 };
    };
    std::vector<TagData> Tags;
 };


@@ -83,27 +100,21 @@ static unsigned long AlphaHash(const char *Text, size_t Length)            /*{{{*/
 // TagFile::pkgTagFile - Constructor                                   /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // TagFile::pkgTagFile - Constructor                                   /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-pkgTagFile::pkgTagFile(FileFd *pFd,unsigned long long Size)
-   : d(NULL)
+pkgTagFile::pkgTagFile(FileFd * const pFd,unsigned long long const Size)
+   : d(new pkgTagFilePrivate(pFd, Size + 4))

 {
    Init(pFd, Size);
 }
 {
    Init(pFd, Size);
 }

-
-void pkgTagFile::Init(FileFd *pFd,unsigned long long Size)
+void pkgTagFile::Init(FileFd * const pFd,unsigned long long Size)

 {
    /* 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;
 {
    /* 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;

-   if(d != NULL)
-   {
-      free(d->Buffer);
-      delete d;
-   }
-   d = new pkgTagFilePrivate(pFd, Size);
+   d->Reset(pFd, Size);

 
 

-   if (d->Fd.IsOpen() == false)
+   if (d->Fd->IsOpen() == false)

       d->Start = d->End = d->Buffer = 0;
    else
       d->Buffer = (char*)malloc(sizeof(char) * Size);
       d->Start = d->End = d->Buffer = 0;
    else
       d->Buffer = (char*)malloc(sizeof(char) * Size);


@@ -124,7 +135,6 @@ void pkgTagFile::Init(FileFd *pFd,unsigned long long Size)
 /* */
 pkgTagFile::~pkgTagFile()
 {
 /* */
 pkgTagFile::~pkgTagFile()
 {

-   free(d->Buffer);

    delete d;
 }
                                                                        /*}}}*/
    delete d;
 }
                                                                        /*}}}*/


@@ -184,7 +194,7 @@ bool pkgTagFile::Step(pkgTagSection &Tag)
 
         if (Resize() == false)
            return _error->Error(_("Unable to parse package file %s (%d)"),
 
         if (Resize() == false)
            return _error->Error(_("Unable to parse package file %s (%d)"),

-                 d->Fd.Name().c_str(), 1);
+                 d->Fd->Name().c_str(), 1);

 
       } while (Tag.Scan(d->Start,d->End - d->Start, false) == false);
    }
 
       } while (Tag.Scan(d->Start,d->End - d->Start, false) == false);
    }


@@ -213,7 +223,7 @@ bool pkgTagFile::Fill()
    {
       // See if only a bit of the file is left
       unsigned long long const dataSize = d->Size - ((d->End - d->Buffer) + 1);
    {
       // See if only a bit of the file is left
       unsigned long long const dataSize = d->Size - ((d->End - d->Buffer) + 1);

-      if (d->Fd.Read(d->End, dataSize, &Actual) == false)
+      if (d->Fd->Read(d->End, dataSize, &Actual) == false)

         return false;
       if (Actual != dataSize)
         d->Done = true;
         return false;
       if (Actual != dataSize)
         d->Done = true;


@@ -268,7 +278,7 @@ bool pkgTagFile::Jump(pkgTagSection &Tag,unsigned long long Offset)
    // Reposition and reload..
    d->iOffset = Offset;
    d->Done = false;
    // Reposition and reload..
    d->iOffset = Offset;
    d->Done = false;

-   if (d->Fd.Seek(Offset) == false)
+   if (d->Fd->Seek(Offset) == false)

       return false;
    d->End = d->Start = d->Buffer;
    
       return false;
    d->End = d->Start = d->Buffer;
    


@@ -283,7 +293,7 @@ bool pkgTagFile::Jump(pkgTagSection &Tag,unsigned long long Offset)
       return false;
    
    if (Tag.Scan(d->Start, d->End - d->Start, false) == false)
       return false;
    
    if (Tag.Scan(d->Start, d->End - d->Start, false) == false)

-      return _error->Error(_("Unable to parse package file %s (%d)"),d->Fd.Name().c_str(), 2);
+      return _error->Error(_("Unable to parse package file %s (%d)"),d->Fd->Name().c_str(), 2);

    
    return true;
 }
    
    return true;
 }


@@ -293,24 +303,13 @@ bool pkgTagFile::Jump(pkgTagSection &Tag,unsigned long long Offset)
 /* */
 APT_IGNORE_DEPRECATED_PUSH
 pkgTagSection::pkgTagSection()
 /* */
 APT_IGNORE_DEPRECATED_PUSH
 pkgTagSection::pkgTagSection()

-   : Section(0), d(NULL), Stop(0)
+   : Section(0), d(new pkgTagSectionPrivate()), Stop(0)

 {
 {

-   d = new pkgTagSectionPrivate();
-#if APT_PKG_ABI < 413
-   TagCount = 0;
-   memset(&Indexes, 0, sizeof(Indexes));
-#endif

    memset(&AlphaIndexes, 0, sizeof(AlphaIndexes));
 }
 APT_IGNORE_DEPRECATED_POP
                                                                        /*}}}*/
 // TagSection::Scan - Scan for the end of the header information       /*{{{*/
    memset(&AlphaIndexes, 0, sizeof(AlphaIndexes));
 }
 APT_IGNORE_DEPRECATED_POP
                                                                        /*}}}*/
 // TagSection::Scan - Scan for the end of the header information       /*{{{*/

-#if APT_PKG_ABI < 413
-bool pkgTagSection::Scan(const char *Start,unsigned long MaxLength)
-{
-   return Scan(Start, MaxLength, true);
-}
-#endif

 bool pkgTagSection::Scan(const char *Start,unsigned long MaxLength, bool const Restart)
 {
    Section = Start;
 bool pkgTagSection::Scan(const char *Start,unsigned long MaxLength, bool const Restart)
 {
    Section = Start;


@@ -336,11 +335,7 @@ bool pkgTagSection::Scan(const char *Start,unsigned long MaxLength, bool const R
       }
       d->Tags.reserve(0x100);
    }
       }
       d->Tags.reserve(0x100);
    }

-#if APT_PKG_ABI >= 413

    unsigned int TagCount = d->Tags.size();
    unsigned int TagCount = d->Tags.size();

-#else
-   APT_IGNORE_DEPRECATED(TagCount = d->Tags.size();)
-#endif

 
    if (Stop == 0)
       return false;
 
    if (Stop == 0)
       return false;


@@ -367,10 +362,6 @@ bool pkgTagSection::Scan(const char *Start,unsigned long MaxLength, bool const R
               lastTagData.NextInBucket = AlphaIndexes[lastTagHash];
            APT_IGNORE_DEPRECATED_PUSH
            AlphaIndexes[lastTagHash] = TagCount;
               lastTagData.NextInBucket = AlphaIndexes[lastTagHash];
            APT_IGNORE_DEPRECATED_PUSH
            AlphaIndexes[lastTagHash] = TagCount;

-#if APT_PKG_ABI < 413
-           if (d->Tags.size() < sizeof(Indexes)/sizeof(Indexes[0]))
-              Indexes[d->Tags.size()] = lastTagData.StartTag;
-#endif

            APT_IGNORE_DEPRECATED_POP
            d->Tags.push_back(lastTagData);
         }
            APT_IGNORE_DEPRECATED_POP
            d->Tags.push_back(lastTagData);
         }


@@ -414,16 +405,10 @@ bool pkgTagSection::Scan(const char *Start,unsigned long MaxLength, bool const R
            if (AlphaIndexes[lastTagHash] != 0)
               lastTagData.NextInBucket = AlphaIndexes[lastTagHash];
            APT_IGNORE_DEPRECATED(AlphaIndexes[lastTagHash] = TagCount;)
            if (AlphaIndexes[lastTagHash] != 0)
               lastTagData.NextInBucket = AlphaIndexes[lastTagHash];
            APT_IGNORE_DEPRECATED(AlphaIndexes[lastTagHash] = TagCount;)

-#if APT_PKG_ABI < 413
-           APT_IGNORE_DEPRECATED(Indexes[d->Tags.size()] = lastTagData.StartTag;)
-#endif

            d->Tags.push_back(lastTagData);
         }
 
         pkgTagSectionPrivate::TagData const td(Stop - Section);
            d->Tags.push_back(lastTagData);
         }
 
         pkgTagSectionPrivate::TagData const td(Stop - Section);

-#if APT_PKG_ABI < 413
-        APT_IGNORE_DEPRECATED(Indexes[d->Tags.size()] = td.StartTag;)
-#endif

         d->Tags.push_back(td);
         TrimRecord(false,End);
         return true;
         d->Tags.push_back(td);
         TrimRecord(false,End);
         return true;


@@ -454,11 +439,7 @@ void pkgTagSection::Trim()
 }
                                                                        /*}}}*/
 // TagSection::Exists - return True if a tag exists                    /*{{{*/
 }
                                                                        /*}}}*/
 // TagSection::Exists - return True if a tag exists                    /*{{{*/

-#if APT_PKG_ABI >= 413

 bool pkgTagSection::Exists(const char* const Tag) const
 bool pkgTagSection::Exists(const char* const Tag) const

-#else
-bool pkgTagSection::Exists(const char* const Tag)
-#endif

 {
    unsigned int tmp;
    return Find(Tag, tmp);
 {
    unsigned int tmp;
    return Find(Tag, tmp);


@@ -509,8 +490,6 @@ bool pkgTagSection::Find(const char *Tag,const char *&Start,
 }
                                                                        /*}}}*/
 // TagSection::FindS - Find a string                                   /*{{{*/
 }
                                                                        /*}}}*/
 // TagSection::FindS - Find a string                                   /*{{{*/

-// ---------------------------------------------------------------------
-/* */

 string pkgTagSection::FindS(const char *Tag) const
 {
    const char *Start;
 string pkgTagSection::FindS(const char *Tag) const
 {
    const char *Start;


@@ -520,6 +499,24 @@ string pkgTagSection::FindS(const char *Tag) const
    return string(Start,End);      
 }
                                                                        /*}}}*/
    return string(Start,End);      
 }
                                                                        /*}}}*/

+// TagSection::FindRawS - Find a string                                        /*{{{*/
+string pkgTagSection::FindRawS(const char *Tag) const
+{
+   unsigned int Pos;
+   if (Find(Tag, Pos) == false)
+      return "";
+
+   char const *Start = (char const *) memchr(Section + d->Tags[Pos].EndTag, ':', d->Tags[Pos].StartValue - d->Tags[Pos].EndTag);
+   ++Start;
+   char const *End = Section + d->Tags[Pos + 1].StartTag;
+   if (unlikely(Start > End))
+      return "";
+
+   for (; isspace(End[-1]) != 0 && End > Start; --End);
+
+   return std::string(Start, End - Start);
+}
+                                                                       /*}}}*/

 // TagSection::FindI - Find an integer                                 /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // TagSection::FindI - Find an integer                                 /*{{{*/
 // ---------------------------------------------------------------------
 /* */


@@ -536,9 +533,16 @@ signed int pkgTagSection::FindI(const char *Tag,signed long Default) const
       return Default;
    strncpy(S,Start,Stop-Start);
    S[Stop - Start] = 0;
       return Default;
    strncpy(S,Start,Stop-Start);
    S[Stop - Start] = 0;

-   
+
+   errno = 0;

    char *End;
    signed long Result = strtol(S,&End,10);
    char *End;
    signed long Result = strtol(S,&End,10);

+   if (errno == ERANGE)
+      _error->Errno("strtol", _("Cannot convert %s to integer"), S);
+   if (Result < std::numeric_limits<int>::min() || Result > std::numeric_limits<int>::max()) {
+      errno = ERANGE;
+      _error->Errno("", _("Cannot convert %s to integer"), S);
+   }

    if (S == End)
       return Default;
    return Result;
    if (S == End)
       return Default;
    return Result;


@@ -582,6 +586,34 @@ bool pkgTagSection::FindB(const char *Tag, bool const &Default) const
 // 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 */

+bool pkgTagSection::FindFlag(const char * const Tag, uint8_t &Flags,
+                            uint8_t const Flag) const
+{
+   const char *Start;
+   const char *Stop;
+   if (Find(Tag,Start,Stop) == false)
+      return true;
+   return FindFlag(Flags, Flag, Start, Stop);
+}
+bool pkgTagSection::FindFlag(uint8_t &Flags, uint8_t const Flag,
+                                       char const* const Start, char const* const Stop)
+{
+   switch (StringToBool(string(Start, Stop)))
+   {
+      case 0:
+      Flags &= ~Flag;
+      return true;
+
+      case 1:
+      Flags |= Flag;
+      return true;
+
+      default:
+      _error->Warning("Unknown flag value: %s",string(Start,Stop).c_str());
+      return true;
+   }
+   return true;
+}

 bool pkgTagSection::FindFlag(const char *Tag,unsigned long &Flags,
                             unsigned long Flag) const
 {
 bool pkgTagSection::FindFlag(const char *Tag,unsigned long &Flags,
                             unsigned long Flag) const
 {


@@ -623,71 +655,149 @@ APT_PURE unsigned int pkgTagSection::Count() const {                     /*{{{*/
    return d->Tags.size() - 1;
 }
                                                                        /*}}}*/
    return d->Tags.size() - 1;
 }
                                                                        /*}}}*/

+// TagSection::Write - Ordered (re)writing of fields                   /*{{{*/
+pkgTagSection::Tag pkgTagSection::Tag::Remove(std::string const &Name)
+{
+   return Tag(REMOVE, Name, "");
+}
+pkgTagSection::Tag pkgTagSection::Tag::Rename(std::string const &OldName, std::string const &NewName)
+{
+   return Tag(RENAME, OldName, NewName);
+}
+pkgTagSection::Tag pkgTagSection::Tag::Rewrite(std::string const &Name, std::string const &Data)
+{
+   if (Data.empty() == true)
+      return Tag(REMOVE, Name, "");
+   else
+      return Tag(REWRITE, Name, Data);
+}
+static bool WriteTag(FileFd &File, std::string Tag, std::string const &Value)
+{
+   if (Value.empty() || isspace(Value[0]) != 0)
+      Tag.append(":");
+   else
+      Tag.append(": ");
+   Tag.append(Value);
+   Tag.append("\n");
+   return File.Write(Tag.c_str(), Tag.length());
+}
+static bool RewriteTags(FileFd &File, pkgTagSection const * const This, char const * const Tag,
+      std::vector<pkgTagSection::Tag>::const_iterator &R,
+      std::vector<pkgTagSection::Tag>::const_iterator const &REnd)
+{
+   size_t const TagLen = strlen(Tag);
+   for (; R != REnd; ++R)
+   {
+      std::string data;
+      if (R->Name.length() == TagLen && strncasecmp(R->Name.c_str(), Tag, R->Name.length()) == 0)
+      {
+        if (R->Action != pkgTagSection::Tag::REWRITE)
+           break;
+        data = R->Data;
+      }
+      else if(R->Action == pkgTagSection::Tag::RENAME && R->Data.length() == TagLen &&
+           strncasecmp(R->Data.c_str(), Tag, R->Data.length()) == 0)
+        data = This->FindRawS(R->Name.c_str());
+      else
+        continue;
+
+      return WriteTag(File, Tag, data);
+   }
+   return true;
+}
+bool pkgTagSection::Write(FileFd &File, char const * const * const Order, std::vector<Tag> const &Rewrite) const
+{
+   // first pass: Write everything we have an order for
+   if (Order != NULL)
+   {
+      for (unsigned int I = 0; Order[I] != 0; ++I)
+      {
+        std::vector<Tag>::const_iterator R = Rewrite.begin();
+        if (RewriteTags(File, this, Order[I], R, Rewrite.end()) == false)
+           return false;
+        if (R != Rewrite.end())
+           continue;
+
+        if (Exists(Order[I]) == false)
+           continue;
+
+        if (WriteTag(File, Order[I], FindRawS(Order[I])) == false)
+           return false;
+      }
+   }
+   // second pass: See if we have tags which aren't ordered
+   if (d->Tags.empty() == false)
+   {
+      for (std::vector<pkgTagSectionPrivate::TagData>::const_iterator T = d->Tags.begin(); T != d->Tags.end() - 1; ++T)
+      {
+        char const * const fieldname = Section + T->StartTag;
+        size_t fieldnamelen = T->EndTag - T->StartTag;
+        if (Order != NULL)
+        {
+           unsigned int I = 0;
+           for (; Order[I] != 0; ++I)
+           {
+              if (fieldnamelen == strlen(Order[I]) && strncasecmp(fieldname, Order[I], fieldnamelen) == 0)
+                 break;
+           }
+           if (Order[I] != 0)
+              continue;
+        }
+
+        std::string const name(fieldname, fieldnamelen);
+        std::vector<Tag>::const_iterator R = Rewrite.begin();
+        if (RewriteTags(File, this, name.c_str(), R, Rewrite.end()) == false)
+           return false;
+        if (R != Rewrite.end())
+           continue;
+
+        if (WriteTag(File, name, FindRawS(name.c_str())) == false)
+           return false;
+      }
+   }
+   // last pass: see if there are any rewrites remaining we haven't done yet
+   for (std::vector<Tag>::const_iterator R = Rewrite.begin(); R != Rewrite.end(); ++R)
+   {
+      if (R->Action == Tag::REMOVE)
+        continue;
+      std::string const name = ((R->Action == Tag::RENAME) ? R->Data : R->Name);
+      if (Exists(name.c_str()))
+        continue;
+      if (Order != NULL)
+      {
+        unsigned int I = 0;
+        for (; Order[I] != 0; ++I)
+        {
+           if (strncasecmp(name.c_str(), Order[I], name.length()) == 0 && name.length() == strlen(Order[I]))
+              break;
+        }
+        if (Order[I] != 0)
+           continue;
+      }
+
+      if (WriteTag(File, name, ((R->Action == Tag::RENAME) ? FindRawS(R->Name.c_str()) : R->Data)) == false)
+        return false;
+   }
+   return true;
+}
+                                                                       /*}}}*/
+
+void pkgUserTagSection::TrimRecord(bool /*BeforeRecord*/, const char* &End)/*{{{*/
+{
+   for (; Stop < End && (Stop[0] == '\n' || Stop[0] == '\r' || Stop[0] == '#'); Stop++)
+      if (Stop[0] == '#')
+        Stop = (const char*) memchr(Stop,'\n',End-Stop);
+}
+                                                                       /*}}}*/
+
+#include "tagfile-order.c"
+

 // TFRewrite - Rewrite a control record                                        /*{{{*/
 // ---------------------------------------------------------------------
 /* This writes the control record to stdout rewriting it as necessary. The
    override map item specificies the rewriting rules to follow. This also
    takes the time to sort the feild list. */
 // TFRewrite - Rewrite a control record                                        /*{{{*/
 // ---------------------------------------------------------------------
 /* This writes the control record to stdout rewriting it as necessary. The
    override map item specificies the rewriting rules to follow. This also
    takes the time to sort the feild list. */

-
-/* The order of this list is taken from dpkg source lib/parse.c the fieldinfos
-   array. */
-static const char *iTFRewritePackageOrder[] = {
-                          "Package",
-                          "Essential",
-                          "Status",
-                          "Priority",
-                          "Section",
-                          "Installed-Size",
-                          "Maintainer",
-                          "Original-Maintainer",
-                          "Architecture",
-                          "Source",
-                          "Version",
-                           "Revision",         // Obsolete
-                           "Config-Version",   // Obsolete
-                          "Replaces",
-                          "Provides",
-                          "Depends",
-                          "Pre-Depends",
-                          "Recommends",
-                          "Suggests",
-                          "Conflicts",
-                          "Breaks",
-                          "Conffiles",
-                          "Filename",
-                          "Size",
-                          "MD5sum",
-                          "SHA1",
-                          "SHA256",
-                          "SHA512",
-                           "MSDOS-Filename",   // Obsolete
-                          "Description",
-                          0};
-static const char *iTFRewriteSourceOrder[] = {"Package",
-                                      "Source",
-                                      "Binary",
-                                      "Version",
-                                      "Priority",
-                                      "Section",
-                                      "Maintainer",
-                                     "Original-Maintainer",
-                                      "Build-Depends",
-                                      "Build-Depends-Indep",
-                                      "Build-Conflicts",
-                                      "Build-Conflicts-Indep",
-                                      "Architecture",
-                                      "Standards-Version",
-                                      "Format",
-                                      "Directory",
-                                      "Files",
-                                      0};   
-
-/* Two levels of initialization are used because gcc will set the symbol
-   size of an array to the length of the array, causing dynamic relinking 
-   errors. Doing this makes the symbol size constant */
-const char **TFRewritePackageOrder = iTFRewritePackageOrder;
-const char **TFRewriteSourceOrder = iTFRewriteSourceOrder;
-   
+APT_IGNORE_DEPRECATED_PUSH

 bool TFRewrite(FILE *Output,pkgTagSection const &Tags,const char *Order[],
               TFRewriteData *Rewrite)
 {
 bool TFRewrite(FILE *Output,pkgTagSection const &Tags,const char *Order[],
               TFRewriteData *Rewrite)
 {


@@ -811,6 +921,7 @@ bool TFRewrite(FILE *Output,pkgTagSection const &Tags,const char *Order[],
       
    return true;
 }
       
    return true;
 }

+APT_IGNORE_DEPRECATED_POP

                                                                        /*}}}*/
 
 pkgTagSection::~pkgTagSection() { delete d; }
                                                                        /*}}}*/
 
 pkgTagSection::~pkgTagSection() { delete d; }