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Add a method to get a VersionSet from the Commandline and refactor 

the existing methods a bit to reuse them easier intern
debian/1.8.y
David Kalnischkies 12 years ago
parent
3f8621c5ef
commit
856d3b06a6
2 changed files with 191 additions and 23 deletions
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  1. 140
      apt-pkg/cacheset.cc
  2. 74
      apt-pkg/cacheset.h

140
apt-pkg/cacheset.cc
View File

@ -13,6 +13,7 @@
#include <apt-pkg/error.h>
#include <apt-pkg/cacheset.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/versionmatch.h>
#include <apti18n.h>
@ -22,7 +23,7 @@
/*}}}*/
namespace APT {
// FromRegEx - Return all packages in the cache matching a pattern /*{{{*/
PackageSet PackageSet::FromRegEx(pkgCache &Cache, std::string pattern, std::ostream &out) {
PackageSet PackageSet::FromRegEx(pkgCacheFile &Cache, std::string pattern, std::ostream &out) {
PackageSet pkgset;
std::string arch = "native";
static const char * const isregex = ".?+*|[^$";
@ -48,7 +49,7 @@ PackageSet PackageSet::FromRegEx(pkgCache &Cache, std::string pattern, std::ostr
return pkgset;
}
for (pkgCache::GrpIterator Grp = Cache.GrpBegin(); Grp.end() == false; ++Grp)
for (pkgCache::GrpIterator Grp = Cache.GetPkgCache()->GrpBegin(); Grp.end() == false; ++Grp)
{
if (regexec(&Pattern, Grp.Name(), 0, 0, 0) != 0)
continue;
@ -76,28 +77,129 @@ PackageSet PackageSet::FromRegEx(pkgCache &Cache, std::string pattern, std::ostr
}
/*}}}*/
// FromCommandLine - Return all packages specified on commandline /*{{{*/
PackageSet PackageSet::FromCommandLine(pkgCache &Cache, const char **cmdline, std::ostream &out) {
PackageSet PackageSet::FromCommandLine(pkgCacheFile &Cache, const char **cmdline, std::ostream &out) {
PackageSet pkgset;
for (const char **I = cmdline + 1; *I != 0; I++) {
pkgCache::PkgIterator Pkg = Cache.FindPkg(*I);
if (Pkg.end() == true) {
std::vector<std::string> archs = APT::Configuration::getArchitectures();
for (std::vector<std::string>::const_iterator a = archs.begin();
a != archs.end() || Pkg.end() != true; ++a) {
Pkg = Cache.FindPkg(*I, *a);
}
if (Pkg.end() == true) {
PackageSet regex = FromRegEx(Cache, *I, out);
if (regex.empty() == true)
_error->Warning(_("Unable to locate package %s"),*I);
else
pkgset.insert(regex.begin(), regex.end());
continue;
PackageSet pset = FromString(Cache, *I, out);
pkgset.insert(pset.begin(), pset.end());
}
return pkgset;
}
/*}}}*/
// FromString - Return all packages matching a specific string /*{{{*/
PackageSet PackageSet::FromString(pkgCacheFile &Cache, const char * const str, std::ostream &out) {
pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(str);
if (Grp.end() == false) {
pkgCache::PkgIterator Pkg = Grp.FindPreferredPkg();
PackageSet pkgset;
pkgset.insert(Pkg);
return pkgset;
}
PackageSet regex = FromRegEx(Cache, str, out);
if (regex.empty() == true)
_error->Warning(_("Unable to locate package %s"), str);
return regex;
}
/*}}}*/
// FromCommandLine - Return all versions specified on commandline /*{{{*/
APT::VersionSet VersionSet::FromCommandLine(pkgCacheFile &Cache, const char **cmdline,
APT::VersionSet::Version const &fallback, std::ostream &out) {
VersionSet verset;
for (const char **I = cmdline + 1; *I != 0; I++) {
std::string pkg = *I;
std::string ver;
bool verIsRel = false;
size_t const vertag = pkg.find_last_of("/=");
if (vertag != string::npos) {
ver = pkg.substr(vertag+1);
verIsRel = (pkg[vertag] == '/');
pkg.erase(vertag);
}
PackageSet pkgset = PackageSet::FromString(Cache, pkg.c_str(), out);
for (PackageSet::const_iterator P = pkgset.begin();
P != pkgset.end(); ++P) {
if (vertag != string::npos) {
pkgVersionMatch Match(ver, (verIsRel == true ? pkgVersionMatch::Release :
pkgVersionMatch::Version));
pkgCache::VerIterator V = Match.Find(P);
if (V.end() == true) {
if (verIsRel == true)
_error->Error(_("Release '%s' for '%s' was not found"),
ver.c_str(), P.FullName(true).c_str());
else
_error->Error(_("Version '%s' for '%s' was not found"),
ver.c_str(), P.FullName(true).c_str());
continue;
}
if (strcmp(ver.c_str(), V.VerStr()) != 0)
ioprintf(out, _("Selected version %s (%s) for %s\n"),
V.VerStr(), V.RelStr().c_str(), P.FullName(true).c_str());
verset.insert(V);
} else {
pkgCache::VerIterator V;
switch(fallback) {
case VersionSet::ALL:
for (V = P.VersionList(); V.end() != true; ++V)
verset.insert(V);
break;
case VersionSet::CANDANDINST:
verset.insert(getInstalledVer(Cache, P));
verset.insert(getCandidateVer(Cache, P));
break;
case VersionSet::CANDIDATE:
verset.insert(getCandidateVer(Cache, P));
break;
case VersionSet::INSTALLED:
verset.insert(getInstalledVer(Cache, P));
break;
case VersionSet::CANDINST:
V = getCandidateVer(Cache, P, true);
if (V.end() == true)
V = getInstalledVer(Cache, P, true);
if (V.end() == false)
verset.insert(V);
else
_error->Error(_("Can't select installed nor candidate version from package %s as it has neither of them"), P.FullName(true).c_str());
break;
case VersionSet::INSTCAND:
V = getInstalledVer(Cache, P, true);
if (V.end() == true)
V = getCandidateVer(Cache, P, true);
if (V.end() == false)
verset.insert(V);
else
_error->Error(_("Can't select installed nor candidate version from package %s as it has neither of them"), P.FullName(true).c_str());
break;
case VersionSet::NEWEST:
if (P->VersionList != 0)
verset.insert(P.VersionList());
else
_error->Error(_("Can't select newest version from package %s as it is purely virtual"), P.FullName(true).c_str());
break;
}
}
}
pkgset.insert(Pkg);
}
return pkgset;
return verset;
}
/*}}}*/
// getCandidateVer - Returns the candidate version of the given package /*{{{*/
pkgCache::VerIterator VersionSet::getCandidateVer(pkgCacheFile &Cache,
pkgCache::PkgIterator const &Pkg, bool const &AllowError) {
if (unlikely(Cache.BuildDepCache() == false))
return pkgCache::VerIterator(*Cache);
pkgCache::VerIterator Cand = Cache[Pkg].InstVerIter(Cache);
if (AllowError == false && Cand.end() == true)
_error->Error(_("Can't select candidate version from package %s as it has no candidate"), Pkg.FullName(true).c_str());
return Cand;
}
/*}}}*/
// getInstalledVer - Returns the installed version of the given package /*{{{*/
pkgCache::VerIterator VersionSet::getInstalledVer(pkgCacheFile &Cache,
pkgCache::PkgIterator const &Pkg, bool const &AllowError) {
if (AllowError == false && Pkg->CurrentVer == 0)
_error->Error(_("Can't select installed version from package %s as it is not installed"), Pkg.FullName(true).c_str());
return Pkg.CurrentVer();
}
/*}}}*/
}

74
apt-pkg/cacheset.h
View File

@ -14,6 +14,7 @@
#include <set>
#include <string>
#include <apt-pkg/cachefile.h>
#include <apt-pkg/pkgcache.h>
/*}}}*/
namespace APT {
@ -68,12 +69,23 @@ public: /*{{{*/
\param Cache the packages are in
\param pattern regular expression for package names
\param out stream to print the notice to */
static APT::PackageSet FromRegEx(pkgCache &Cache, std::string pattern, std::ostream &out);
static APT::PackageSet FromRegEx(pkgCache &Cache, std::string const &pattern) {
static APT::PackageSet FromRegEx(pkgCacheFile &Cache, std::string pattern, std::ostream &out);
static APT::PackageSet FromRegEx(pkgCacheFile &Cache, std::string const &pattern) {
std::ostream out (std::ofstream("/dev/null").rdbuf());
return APT::PackageSet::FromRegEx(Cache, pattern, out);
}
/** \brief returns all packages specified by a string
\param Cache the packages are in
\param string String the package name(s) should be extracted from
\param out stream to print various notices to */
static APT::PackageSet FromString(pkgCacheFile &Cache, const char * const string, std::ostream &out);
static APT::PackageSet FromString(pkgCacheFile &Cache, const char * const string) {
std::ostream out (std::ofstream("/dev/null").rdbuf());
return APT::PackageSet::FromString(Cache, string, out);
}
/** \brief returns all packages specified on the commandline
Get all package names from the commandline and executes regex's if needed.
@ -81,8 +93,8 @@ public: /*{{{*/
\param Cache the packages are in
\param cmdline Command line the package names should be extracted from
\param out stream to print various notices to */
static APT::PackageSet FromCommandLine(pkgCache &Cache, const char **cmdline, std::ostream &out);
static APT::PackageSet FromCommandLine(pkgCache &Cache, const char **cmdline) {
static APT::PackageSet FromCommandLine(pkgCacheFile &Cache, const char **cmdline, std::ostream &out);
static APT::PackageSet FromCommandLine(pkgCacheFile &Cache, const char **cmdline) {
std::ostream out (std::ofstream("/dev/null").rdbuf());
return APT::PackageSet::FromCommandLine(Cache, cmdline, out);
}
@ -133,6 +145,60 @@ public: /*{{{*/
// 103. set::iterator is required to be modifiable, but this allows modification of keys
typedef typename APT::VersionSet::const_iterator iterator;
/** \brief specifies which version(s) will be returned if non is given */
enum Version {
/** All versions */
ALL,
/** Candidate and installed version */
CANDANDINST,
/** Candidate version */
CANDIDATE,
/** Installed version */
INSTALLED,
/** Candidate or if non installed version */
CANDINST,
/** Installed or if non candidate version */
INSTCAND,
/** Newest version */
NEWEST
};
/** \brief returns all versions specified on the commandline
Get all versions from the commandline, uses given default version if
non specifically requested and executes regex's if needed on names.
\param Cache the packages and versions are in
\param cmdline Command line the versions should be extracted from
\param out stream to print various notices to */
static APT::VersionSet FromCommandLine(pkgCacheFile &Cache, const char **cmdline,
APT::VersionSet::Version const &fallback, std::ostream &out);
static APT::VersionSet FromCommandLine(pkgCacheFile &Cache, const char **cmdline,
APT::VersionSet::Version const &fallback) {
std::ostream out (std::ofstream("/dev/null").rdbuf());
return APT::VersionSet::FromCommandLine(Cache, cmdline, fallback, out);
}
static APT::VersionSet FromCommandLine(pkgCacheFile &Cache, const char **cmdline) {
return APT::VersionSet::FromCommandLine(Cache, cmdline, CANDINST);
}
/*}}}*/
protected: /*{{{*/
/** \brief returns the candidate version of the package
\param Cache to be used to query for information
\param Pkg we want the candidate version from this package
\param AllowError add an error to the stack if not */
static pkgCache::VerIterator getCandidateVer(pkgCacheFile &Cache,
pkgCache::PkgIterator const &Pkg, bool const &AllowError = false);
/** \brief returns the installed version of the package
\param Cache to be used to query for information
\param Pkg we want the installed version from this package
\param AllowError add an error to the stack if not */
static pkgCache::VerIterator getInstalledVer(pkgCacheFile &Cache,
pkgCache::PkgIterator const &Pkg, bool const &AllowError = false);
/*}}}*/
}; /*}}}*/
}

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