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;
+
+ ~pkgTagFilePrivate()
+ {
+ if (Buffer != NULL)
+ free(Buffer);
+ }
+};
+
+class pkgTagSectionPrivate
+{
+public:
+ pkgTagSectionPrivate()
+ {
+ }
+ struct TagData {
+ unsigned int StartTag;
+ unsigned int EndTag;
+ unsigned int StartValue;
+ unsigned int NextInBucket;
+
+ explicit TagData(unsigned int const StartTag) : StartTag(StartTag), EndTag(0), StartValue(0), NextInBucket(0) {}
+ };
+ std::vector<TagData> Tags;
};
static unsigned long AlphaHash(const char *Text, size_t Length) /*{{{*/
// 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);
}
-
-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;
- 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);
/* */
pkgTagFile::~pkgTagFile()
{
- free(d->Buffer);
delete d;
}
/*}}}*/
break;
if (Resize() == false)
- return _error->Error(_("Unable to parse package file %s (1)"),
- d->Fd.Name().c_str());
+ return _error->Error(_("Unable to parse package file %s (%d)"),
+ d->Fd->Name().c_str(), 1);
} while (Tag.Scan(d->Start,d->End - d->Start, false) == false);
}
{
// 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;
// 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;
if (Tag.Scan(d->Start, d->End - d->Start, false) == false)
- return _error->Error(_("Unable to parse package file %s (2)"),d->Fd.Name().c_str());
+ return _error->Error(_("Unable to parse package file %s (%d)"),d->Fd->Name().c_str(), 2);
return true;
}
// pkgTagSection::pkgTagSection - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* */
+APT_IGNORE_DEPRECATED_PUSH
pkgTagSection::pkgTagSection()
- : Section(0), d(NULL), Stop(0)
+ : Section(0), d(new pkgTagSectionPrivate()), Stop(0)
{
- memset(&LookupTable, 0, sizeof(LookupTable));
+ memset(&AlphaIndexes, 0, sizeof(AlphaIndexes));
}
+APT_IGNORE_DEPRECATED_POP
/*}}}*/
// TagSection::Scan - Scan for the end of the header information /*{{{*/
bool pkgTagSection::Scan(const char *Start,unsigned long MaxLength, bool const Restart)
Section = Start;
const char *End = Start + MaxLength;
- if (Restart == false && Tags.empty() == false)
+ if (Restart == false && d->Tags.empty() == false)
{
- Stop = Section + Tags.back().StartTag;
+ Stop = Section + d->Tags.back().StartTag;
if (End <= Stop)
return false;
Stop = (const char *)memchr(Stop,'\n',End - Stop);
else
{
Stop = Section;
- if (Tags.empty() == false)
+ if (d->Tags.empty() == false)
{
- memset(&LookupTable, 0, sizeof(LookupTable));
- Tags.clear();
+ memset(&AlphaIndexes, 0, sizeof(AlphaIndexes));
+ d->Tags.clear();
}
- Tags.reserve(0x100);
+ d->Tags.reserve(0x100);
}
- size_t TagCount = Tags.size();
+ unsigned int TagCount = d->Tags.size();
if (Stop == 0)
return false;
- TagData lastTagData(0);
+ pkgTagSectionPrivate::TagData lastTagData(0);
lastTagData.EndTag = 0;
unsigned long lastTagHash = 0;
while (Stop < End)
// store the last found tag
if (lastTagData.EndTag != 0)
{
- if (LookupTable[lastTagHash] != 0)
- lastTagData.NextInBucket = LookupTable[lastTagHash];
- LookupTable[lastTagHash] = TagCount;
- Tags.push_back(lastTagData);
+ if (AlphaIndexes[lastTagHash] != 0)
+ lastTagData.NextInBucket = AlphaIndexes[lastTagHash];
+ APT_IGNORE_DEPRECATED_PUSH
+ AlphaIndexes[lastTagHash] = TagCount;
+ APT_IGNORE_DEPRECATED_POP
+ d->Tags.push_back(lastTagData);
}
- ++TagCount;
- lastTagData = TagData(Stop - Section);
+ APT_IGNORE_DEPRECATED(++TagCount;)
+ lastTagData = pkgTagSectionPrivate::TagData(Stop - Section);
// find the colon separating tag and value
char const * Colon = (char const *) memchr(Stop, ':', End - Stop);
if (Colon == NULL)
{
if (lastTagData.EndTag != 0)
{
- if (LookupTable[lastTagHash] != 0)
- lastTagData.NextInBucket = LookupTable[lastTagHash];
- LookupTable[lastTagHash] = TagCount;
- Tags.push_back(lastTagData);
+ if (AlphaIndexes[lastTagHash] != 0)
+ lastTagData.NextInBucket = AlphaIndexes[lastTagHash];
+ APT_IGNORE_DEPRECATED(AlphaIndexes[lastTagHash] = TagCount;)
+ d->Tags.push_back(lastTagData);
}
- TagData const td(Stop - Section);
- Tags.push_back(td);
+ pkgTagSectionPrivate::TagData const td(Stop - Section);
+ d->Tags.push_back(td);
TrimRecord(false,End);
return true;
}
bool pkgTagSection::Find(const char *Tag,unsigned int &Pos) const
{
size_t const Length = strlen(Tag);
- unsigned int Bucket = LookupTable[AlphaHash(Tag, Length)];
+ unsigned int Bucket = AlphaIndexes[AlphaHash(Tag, Length)];
if (Bucket == 0)
return false;
- for (; Bucket != 0; Bucket = Tags[Bucket - 1].NextInBucket)
+ for (; Bucket != 0; Bucket = d->Tags[Bucket - 1].NextInBucket)
{
- if ((Tags[Bucket - 1].EndTag - Tags[Bucket - 1].StartTag) != Length)
+ if ((d->Tags[Bucket - 1].EndTag - d->Tags[Bucket - 1].StartTag) != Length)
continue;
- char const * const St = Section + Tags[Bucket - 1].StartTag;
+ char const * const St = Section + d->Tags[Bucket - 1].StartTag;
if (strncasecmp(Tag,St,Length) != 0)
continue;
if (Find(Tag, Pos) == false)
return false;
- Start = Section + Tags[Pos].StartValue;
+ Start = Section + d->Tags[Pos].StartValue;
// Strip off the gunk from the end
- End = Section + Tags[Pos + 1].StartTag;
+ End = Section + d->Tags[Pos + 1].StartTag;
if (unlikely(Start > End))
return _error->Error("Internal parsing error");
}
/*}}}*/
// TagSection::FindS - Find a string /*{{{*/
-// ---------------------------------------------------------------------
-/* */
string pkgTagSection::FindS(const char *Tag) const
{
const char *Start;
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::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
{
return true;
}
/*}}}*/
+void pkgTagSection::Get(const char *&Start,const char *&Stop,unsigned int I) const
+{
+ Start = Section + d->Tags[I].StartTag;
+ Stop = Section + d->Tags[I+1].StartTag;
+}
APT_PURE unsigned int pkgTagSection::Count() const { /*{{{*/
- if (Tags.empty() == true)
+ if (d->Tags.empty() == true)
return 0;
// the last element is just marking the end and isn't a real one
- return 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. */
-
-/* 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)
{
return true;
}
+APT_IGNORE_DEPRECATED_POP
/*}}}*/
+
+pkgTagSection::~pkgTagSection() { delete d; }
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