diff options
Diffstat (limited to 'apt-pkg/tagfile.cc')
| -rw-r--r-- | apt-pkg/tagfile.cc | 113 |
1 files changed, 68 insertions, 45 deletions
diff --git a/apt-pkg/tagfile.cc b/apt-pkg/tagfile.cc index 10bc08d95..832a40d1e 100644 --- a/apt-pkg/tagfile.cc +++ b/apt-pkg/tagfile.cc @@ -164,7 +164,7 @@ bool pkgTagFile::Fill() unsigned long long const dataSize = d->Size - ((d->End - d->Buffer) + 1); if (d->Fd.Read(d->End, dataSize, &Actual) == false) return false; - if (Actual != dataSize || d->Fd.Eof() == true) + if (Actual != dataSize) d->Done = true; d->End += Actual; } @@ -207,7 +207,11 @@ bool pkgTagFile::Jump(pkgTagSection &Tag,unsigned long long Offset) unsigned long long Dist = Offset - d->iOffset; d->Start += Dist; d->iOffset += Dist; - return Step(Tag); + // if we have seen the end, don't ask for more + if (d->Done == true) + return Tag.Scan(d->Start, d->End - d->Start); + else + return Step(Tag); } // Reposition and reload.. @@ -233,6 +237,16 @@ bool pkgTagFile::Jump(pkgTagSection &Tag,unsigned long long Offset) return true; } /*}}}*/ +// pkgTagSection::pkgTagSection - Constructor /*{{{*/ +// --------------------------------------------------------------------- +/* */ +pkgTagSection::pkgTagSection() + : Section(0), TagCount(0), d(NULL), Stop(0) +{ + 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. @@ -249,7 +263,12 @@ bool pkgTagSection::Scan(const char *Start,unsigned long MaxLength) TagCount = 0; while (TagCount+1 < sizeof(Indexes)/sizeof(Indexes[0]) && Stop < End) { - TrimRecord(true,End); + TrimRecord(true,End); + + // this can happen when TrimRecord trims away the entire Record + // (e.g. because it just contains comments) + if(Stop == End) + return true; // Start a new index and add it to the hash if (isspace(Stop[0]) == 0) @@ -263,7 +282,9 @@ bool pkgTagSection::Scan(const char *Start,unsigned long MaxLength) if (Stop == 0) return false; - for (; Stop+1 < End && Stop[1] == '\r'; Stop++); + for (; Stop+1 < End && Stop[1] == '\r'; Stop++) + /* nothing */ + ; // Double newline marks the end of the record if (Stop+1 < End && Stop[1] == '\n') @@ -550,52 +571,54 @@ bool TFRewrite(FILE *Output,pkgTagSection const &Tags,const char *Order[], } // Write all all of the tags, in order. - for (unsigned int I = 0; Order[I] != 0; I++) + if (Order != NULL) { - bool Rewritten = false; - - // See if this is a field that needs to be rewritten - for (unsigned int J = 0; Rewrite != 0 && Rewrite[J].Tag != 0; J++) + for (unsigned int I = 0; Order[I] != 0; I++) { - if (strcasecmp(Rewrite[J].Tag,Order[I]) == 0) - { - Visited[J] |= 2; - if (Rewrite[J].Rewrite != 0 && Rewrite[J].Rewrite[0] != 0) - { - if (isspace(Rewrite[J].Rewrite[0])) - fprintf(Output,"%s:%s\n",Rewrite[J].NewTag,Rewrite[J].Rewrite); - else - fprintf(Output,"%s: %s\n",Rewrite[J].NewTag,Rewrite[J].Rewrite); - } + bool Rewritten = false; + + // See if this is a field that needs to be rewritten + for (unsigned int J = 0; Rewrite != 0 && Rewrite[J].Tag != 0; J++) + { + if (strcasecmp(Rewrite[J].Tag,Order[I]) == 0) + { + Visited[J] |= 2; + if (Rewrite[J].Rewrite != 0 && Rewrite[J].Rewrite[0] != 0) + { + if (isspace(Rewrite[J].Rewrite[0])) + fprintf(Output,"%s:%s\n",Rewrite[J].NewTag,Rewrite[J].Rewrite); + else + fprintf(Output,"%s: %s\n",Rewrite[J].NewTag,Rewrite[J].Rewrite); + } + Rewritten = true; + break; + } + } - Rewritten = true; - break; - } - } - - // See if it is in the fragment - unsigned Pos; - if (Tags.Find(Order[I],Pos) == false) - continue; - Visited[Pos] |= 1; - - if (Rewritten == true) - continue; + // See if it is in the fragment + unsigned Pos; + if (Tags.Find(Order[I],Pos) == false) + continue; + Visited[Pos] |= 1; + + if (Rewritten == true) + continue; - /* Write out this element, taking a moment to rewrite the tag - in case of changes of case. */ - const char *Start; - const char *Stop; - Tags.Get(Start,Stop,Pos); + /* Write out this element, taking a moment to rewrite the tag + in case of changes of case. */ + const char *Start; + const char *Stop; + Tags.Get(Start,Stop,Pos); - if (fputs(Order[I],Output) < 0) - return _error->Errno("fputs","IO Error to output"); - Start += strlen(Order[I]); - if (fwrite(Start,Stop - Start,1,Output) != 1) - return _error->Errno("fwrite","IO Error to output"); - if (Stop[-1] != '\n') - fprintf(Output,"\n"); - } + if (fputs(Order[I],Output) < 0) + return _error->Errno("fputs","IO Error to output"); + Start += strlen(Order[I]); + if (fwrite(Start,Stop - Start,1,Output) != 1) + return _error->Errno("fwrite","IO Error to output"); + if (Stop[-1] != '\n') + fprintf(Output,"\n"); + } + } // Now write all the old tags that were missed. for (unsigned int I = 0; I != Tags.Count(); I++) |