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// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
/* ######################################################################
Debian Package Records - Parser for debian package records
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
#include <config.h>
#include <apt-pkg/aptconfiguration.h>
#include <apt-pkg/debindexfile.h>
#include <apt-pkg/debrecords.h>
#include <apt-pkg/error.h>
#include <apt-pkg/fileutl.h>
#include <apt-pkg/pkgcache.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/tagfile-keys.h>
#include <apt-pkg/tagfile.h>
#include <algorithm>
#include <cstring>
#include <sstream>
#include <string>
#include <vector>
#include <langinfo.h>
#include <apti18n.h>
/*}}}*/
using std::string;
// RecordParser::debRecordParser - Constructor /*{{{*/
debRecordParser::debRecordParser(string FileName,pkgCache &Cache) :
debRecordParserBase(), d(NULL), File(FileName, FileFd::ReadOnly, FileFd::Extension),
Tags(&File, std::max(Cache.Head().MaxVerFileSize, Cache.Head().MaxDescFileSize) + 200)
{
}
/*}}}*/
// RecordParser::Jump - Jump to a specific record /*{{{*/
bool debRecordParser::Jump(pkgCache::VerFileIterator const &Ver)
{
if (Ver.end() == true)
return false;
return Tags.Jump(Section,Ver->Offset);
}
bool debRecordParser::Jump(pkgCache::DescFileIterator const &Desc)
{
if (Desc.end() == true)
return false;
return Tags.Jump(Section,Desc->Offset);
}
/*}}}*/
debRecordParser::~debRecordParser() {}
debRecordParserBase::debRecordParserBase() : Parser(), d(NULL) {}
// RecordParserBase::FileName - Return the archive filename on the site /*{{{*/
string debRecordParserBase::FileName()
{
return string{Section.Find(pkgTagSection::Key::Filename)};
}
/*}}}*/
// RecordParserBase::Name - Return the package name /*{{{*/
string debRecordParserBase::Name()
{
auto Result = string{Section.Find(pkgTagSection::Key::Package)};
// Normalize mixed case package names to lower case, like dpkg does
// See Bug#807012 for details
std::transform(Result.begin(), Result.end(), Result.begin(), tolower_ascii);
return Result;
}
/*}}}*/
// RecordParserBase::Homepage - Return the package homepage /*{{{*/
string debRecordParserBase::Homepage()
{
return string{Section.Find(pkgTagSection::Key::Homepage)};
}
/*}}}*/
// RecordParserBase::Hashes - return the available archive hashes /*{{{*/
HashStringList debRecordParserBase::Hashes() const
{
HashStringList hashes;
for (char const * const * type = HashString::SupportedHashes(); *type != NULL; ++type)
{
std::string const hash = Section.FindS(*type);
if (hash.empty() == false)
hashes.push_back(HashString(*type, std::move(hash)));
}
auto const size = Section.FindULL(pkgTagSection::Key::Size, 0);
if (size != 0)
hashes.FileSize(size);
return hashes;
}
/*}}}*/
// RecordParserBase::Maintainer - Return the maintainer email /*{{{*/
string debRecordParserBase::Maintainer()
{
return string{Section.Find(pkgTagSection::Key::Maintainer)};
}
/*}}}*/
// RecordParserBase::RecordField - Return the value of an arbitrary field /*{{*/
string debRecordParserBase::RecordField(const char *fieldName)
{
return Section.FindS(fieldName);
}
/*}}}*/
// RecordParserBase::ShortDesc - Return a 1 line description /*{{{*/
string debRecordParserBase::ShortDesc(std::string const &lang)
{
string const Res = LongDesc(lang);
if (Res.empty() == true)
return "";
string::size_type const Pos = Res.find('\n');
if (Pos == string::npos)
return Res;
return string(Res,0,Pos);
}
/*}}}*/
// RecordParserBase::LongDesc - Return a longer description /*{{{*/
string debRecordParserBase::LongDesc(std::string const &lang)
{
string orig;
if (lang.empty() == true)
{
std::vector<string> const lang = APT::Configuration::getLanguages();
for (std::vector<string>::const_iterator l = lang.begin();
l != lang.end(); ++l)
{
std::string const tagname = "Description-" + *l;
orig = Section.FindS(tagname);
if (orig.empty() == false)
break;
else if (*l == "en")
{
orig = Section.Find(pkgTagSection::Key::Description);
if (orig.empty() == false)
break;
}
}
if (orig.empty() == true)
orig = Section.Find(pkgTagSection::Key::Description);
}
else
{
std::string const tagname = "Description-" + lang;
orig = Section.FindS(tagname.c_str());
if (orig.empty() == true && lang == "en")
orig = Section.Find(pkgTagSection::Key::Description);
}
char const * const codeset = nl_langinfo(CODESET);
if (strcmp(codeset,"UTF-8") != 0) {
string dest;
UTF8ToCodeset(codeset, orig, &dest);
return dest;
}
return orig;
}
/*}}}*/
static const char * const SourceVerSeparators = " ()";
// RecordParserBase::SourcePkg - Return the source package name if any /*{{{*/
string debRecordParserBase::SourcePkg()
{
auto Res = string{Section.Find(pkgTagSection::Key::Source)};
auto const Pos = Res.find_first_of(SourceVerSeparators);
if (Pos != std::string::npos)
Res.erase(Pos);
return Res;
}
/*}}}*/
// RecordParserBase::SourceVer - Return the source version number if present /*{{{*/
string debRecordParserBase::SourceVer()
{
std::string_view Pkg = Section.Find(pkgTagSection::Key::Source);
auto Pos = Pkg.find_first_of(SourceVerSeparators);
if (Pos == std::string_view::npos)
return "";
auto VerStart = Pkg.find_first_not_of(SourceVerSeparators, Pos);
if(VerStart == std::string_view::npos)
return "";
auto VerEnd = Pkg.find_first_of(SourceVerSeparators, VerStart);
if(VerEnd == std::string_view::npos)
// Corresponds to the case of, e.g., "foo (1.2" without a closing
// paren. Be liberal and guess what it means.
return string(Pkg.data(), VerStart);
else
return string(Pkg.data(), VerStart, VerEnd - VerStart);
}
/*}}}*/
// RecordParserBase::GetRec - Return the whole record /*{{{*/
void debRecordParserBase::GetRec(const char *&Start,const char *&Stop)
{
Section.GetSection(Start,Stop);
}
/*}}}*/
debRecordParserBase::~debRecordParserBase() {}
bool debDebFileRecordParser::LoadContent()
{
// load content only once
if (controlContent.empty() == false)
return true;
std::ostringstream content;
if (debDebPkgFileIndex::GetContent(content, debFileName) == false)
return false;
// add two newlines to make sure the scanner finds the section,
// which is usually done by pkgTagFile automatically if needed.
content << "\n\n";
controlContent = content.str();
if (Section.Scan(controlContent.c_str(), controlContent.length()) == false)
return _error->Error(_("Unable to parse package file %s (%d)"), debFileName.c_str(), 3);
return true;
}
bool debDebFileRecordParser::Jump(pkgCache::VerFileIterator const &) { return LoadContent(); }
bool debDebFileRecordParser::Jump(pkgCache::DescFileIterator const &) { return LoadContent(); }
std::string debDebFileRecordParser::FileName() { return debFileName; }
debDebFileRecordParser::debDebFileRecordParser(std::string FileName) : debRecordParserBase(), d(NULL), debFileName(FileName) {}
debDebFileRecordParser::~debDebFileRecordParser() {}
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