diff options
Diffstat (limited to 'apt-pkg/tagfile.cc')
| -rw-r--r-- | apt-pkg/tagfile.cc | 56 |
1 files changed, 36 insertions, 20 deletions
diff --git a/apt-pkg/tagfile.cc b/apt-pkg/tagfile.cc index da520ed81..1e5bc81a4 100644 --- a/apt-pkg/tagfile.cc +++ b/apt-pkg/tagfile.cc @@ -1,6 +1,6 @@ // -*- mode: cpp; mode: fold -*- // Description /*{{{*/ -// $Id: tagfile.cc,v 1.35 2002/11/06 06:43:14 jgg Exp $ +// $Id: tagfile.cc,v 1.36 2003/04/27 05:59:14 doogie Exp $ /* ###################################################################### Fast scanner for RFC-822 type header information @@ -42,6 +42,7 @@ pkgTagFile::pkgTagFile(FileFd *pFd,unsigned long Size) : Fd(*pFd), Size(Size) return; } + CurSize = Size; Buffer = new char[Size]; Start = End = Buffer; Done = false; @@ -62,15 +63,23 @@ pkgTagFile::~pkgTagFile() /* If the Section Scanner fails we refill the buffer and try again. */ bool pkgTagFile::Step(pkgTagSection &Tag) { - if (Tag.Scan(Start,End - Start) == false) - { + pkgTagSection::ScanFlags ret = Tag.Scan(Start,End - Start); + if (ret == pkgTagSection::ScanEOF) { + CurSize <<= 1; if (Fill() == false) return false; - - if (Tag.Scan(Start,End - Start) == false) - return _error->Error(_("Unable to parse package file %s (1)"), - Fd.Name().c_str()); + do { + ret = Tag.Scan(Start,End - Start); + if (ret == pkgTagSection::ScanEOF) { + CurSize <<= 1; + if (Fill() == false) + break; + } + } while (ret == pkgTagSection::ScanEOF); } + if (ret != pkgTagSection::ScanSuccess) + return _error->Error(_("Unable to parse package file %s (1)"), + Fd.Name().c_str()); Start += Tag.size(); iOffset += Tag.size(); @@ -147,14 +156,21 @@ bool pkgTagFile::Jump(pkgTagSection &Tag,unsigned long Offset) 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) + pkgTagSection::ScanFlags ret = Tag.Scan(Start,End - Start); + if (ret == pkgTagSection::ScanEOF) { + CurSize <<= 1; + if (Fill() == false) + return false; + do { + ret = Tag.Scan(Start,End - Start); + if (ret == pkgTagSection::ScanEOF) { + CurSize <<= 1; + if (Fill() == false) + break; + } + } while (ret == pkgTagSection::ScanEOF); + } + if (ret != pkgTagSection::ScanSuccess) return _error->Error(_("Unable to parse package file %s (2)"),Fd.Name().c_str()); return true; @@ -173,14 +189,14 @@ inline static unsigned long AlphaHash(const char *Text, const char *End = 0) return Res & 0xFF; } -bool pkgTagSection::Scan(const char *Start,unsigned long MaxLength) +enum pkgTagSection::ScanFlags pkgTagSection::Scan(const char *Start,unsigned long MaxLength) { const char *End = Start + MaxLength; Stop = Section = Start; memset(AlphaIndexes,0,sizeof(AlphaIndexes)); if (Stop == 0) - return false; + return ScanError; TagCount = 0; while (TagCount+1 < sizeof(Indexes)/sizeof(Indexes[0]) && Stop < End) @@ -195,7 +211,7 @@ bool pkgTagSection::Scan(const char *Start,unsigned long MaxLength) Stop = (const char *)memchr(Stop,'\n',End - Stop); if (Stop == 0) - return false; + return ScanEOF; for (; Stop+1 < End && Stop[1] == '\r'; Stop++); @@ -204,13 +220,13 @@ bool pkgTagSection::Scan(const char *Start,unsigned long MaxLength) { Indexes[TagCount] = Stop - Section; for (; Stop < End && (Stop[0] == '\n' || Stop[0] == '\r'); Stop++); - return true; + return ScanSuccess; } Stop++; } - return false; + return ScanEOF; } /*}}}*/ // TagSection::Trim - Trim off any trailing garbage /*{{{*/ |