[ntk/apt.git] / cmdline / cacheset.cc

// -*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
/* ######################################################################

   Simple wrapper around a std::set to provide a similar interface to
   a set of cache structures as to the complete set of all structures
   in the pkgCache. Currently only Package is supported.

   ##################################################################### */
									/*}}}*/
// Include Files							/*{{{*/
#include <apt-pkg/aptconfiguration.h>
#include <apt-pkg/error.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/versionmatch.h>

#include <apti18n.h>

#include "cacheset.h"

#include <vector>

#include <regex.h>
									/*}}}*/
namespace APT {
// FromTask - Return all packages in the cache from a specific task	/*{{{*/
PackageSet PackageSet::FromTask(pkgCacheFile &Cache, std::string pattern, CacheSetHelper &helper) {
	size_t const archfound = pattern.find_last_of(':');
	std::string arch = "native";
	if (archfound != std::string::npos) {
		arch = pattern.substr(archfound+1);
		pattern.erase(archfound);
	}

	if (pattern[pattern.length() -1] != '^')
		return APT::PackageSet();
	pattern.erase(pattern.length()-1);

	if (unlikely(Cache.GetPkgCache() == 0 || Cache.GetDepCache() == 0))
		return APT::PackageSet();

	PackageSet pkgset;
	// get the records
	pkgRecords Recs(Cache);

	// build regexp for the task
	regex_t Pattern;
	char S[300];
	snprintf(S, sizeof(S), "^Task:.*[, ]%s([, ]|$)", pattern.c_str());
	if(regcomp(&Pattern,S, REG_EXTENDED | REG_NOSUB | REG_NEWLINE) != 0) {
		_error->Error("Failed to compile task regexp");
		return pkgset;
	}

	for (pkgCache::GrpIterator Grp = Cache->GrpBegin(); Grp.end() == false; ++Grp) {
		pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
		if (Pkg.end() == true)
			continue;
		pkgCache::VerIterator ver = Cache[Pkg].CandidateVerIter(Cache);
		if(ver.end() == true)
			continue;

		pkgRecords::Parser &parser = Recs.Lookup(ver.FileList());
		const char *start, *end;
		parser.GetRec(start,end);
		unsigned int const length = end - start;
		char buf[length];
		strncpy(buf, start, length);
		buf[length-1] = '\0';
		if (regexec(&Pattern, buf, 0, 0, 0) != 0)
			continue;

		pkgset.insert(Pkg);
	}
	regfree(&Pattern);

	if (pkgset.empty() == true)
		return helper.canNotFindTask(Cache, pattern);

	helper.showTaskSelection(pkgset, pattern);
	return pkgset;
}
									/*}}}*/
// FromRegEx - Return all packages in the cache matching a pattern	/*{{{*/
PackageSet PackageSet::FromRegEx(pkgCacheFile &Cache, std::string pattern, CacheSetHelper &helper) {
	static const char * const isregex = ".?+*|[^$";
	if (pattern.find_first_of(isregex) == std::string::npos)
		return PackageSet();

	size_t archfound = pattern.find_last_of(':');
	std::string arch = "native";
	if (archfound != std::string::npos) {
		arch = pattern.substr(archfound+1);
		if (arch.find_first_of(isregex) == std::string::npos)
			pattern.erase(archfound);
		else
			arch = "native";
	}

	regex_t Pattern;
	int Res;
	if ((Res = regcomp(&Pattern, pattern.c_str() , REG_EXTENDED | REG_ICASE | REG_NOSUB)) != 0) {
		char Error[300];
		regerror(Res, &Pattern, Error, sizeof(Error));
		_error->Error(_("Regex compilation error - %s"), Error);
		return PackageSet();
	}

	if (unlikely(Cache.GetPkgCache() == 0))
		return PackageSet();

	PackageSet pkgset;
	for (pkgCache::GrpIterator Grp = Cache.GetPkgCache()->GrpBegin(); Grp.end() == false; ++Grp)
	{
		if (regexec(&Pattern, Grp.Name(), 0, 0, 0) != 0)
			continue;
		pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
		if (Pkg.end() == true) {
			if (archfound == std::string::npos) {
				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 = Grp.FindPkg(*a);
			}
			if (Pkg.end() == true)
				continue;
		}

		pkgset.insert(Pkg);
	}
	regfree(&Pattern);

	if (pkgset.empty() == true)
		return helper.canNotFindRegEx(Cache, pattern);

	helper.showRegExSelection(pkgset, pattern);
	return pkgset;
}
									/*}}}*/
// FromName - Returns the package defined  by this string		/*{{{*/
pkgCache::PkgIterator PackageSet::FromName(pkgCacheFile &Cache,
			std::string const &str, CacheSetHelper &helper) {
	std::string pkg = str;
	size_t archfound = pkg.find_last_of(':');
	std::string arch;
	if (archfound != std::string::npos) {
		arch = pkg.substr(archfound+1);
		pkg.erase(archfound);
	}

	if (Cache.GetPkgCache() == 0)
		return pkgCache::PkgIterator(Cache, 0);

	pkgCache::PkgIterator Pkg(Cache, 0);
	if (arch.empty() == true) {
		pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(pkg);
		if (Grp.end() == false)
			Pkg = Grp.FindPreferredPkg();
	} else
		Pkg = Cache.GetPkgCache()->FindPkg(pkg, arch);

	if (Pkg.end() == true)
		return helper.canNotFindPkgName(Cache, str);
	return Pkg;
}
									/*}}}*/
// GroupedFromCommandLine - Return all versions specified on commandline/*{{{*/
std::map<unsigned short, PackageSet> PackageSet::GroupedFromCommandLine(
		pkgCacheFile &Cache, const char **cmdline,
		std::list<PackageSet::Modifier> const &mods,
		unsigned short const &fallback, CacheSetHelper &helper) {
	std::map<unsigned short, PackageSet> pkgsets;
	for (const char **I = cmdline; *I != 0; ++I) {
		unsigned short modID = fallback;
		std::string str = *I;
		bool modifierPresent = false;
		for (std::list<PackageSet::Modifier>::const_iterator mod = mods.begin();
		     mod != mods.end(); ++mod) {
			size_t const alength = strlen(mod->Alias);
			switch(mod->Pos) {
			case PackageSet::Modifier::POSTFIX:
				if (str.compare(str.length() - alength, alength,
						mod->Alias, 0, alength) != 0)
					continue;
				str.erase(str.length() - alength);
				modID = mod->ID;
				break;
			case PackageSet::Modifier::PREFIX:
				continue;
			case PackageSet::Modifier::NONE:
				continue;
			}
			modifierPresent = true;
			break;
		}
		if (modifierPresent == true) {
			bool const errors = helper.showErrors(false);
			pkgCache::PkgIterator Pkg = FromName(Cache, *I, helper);
			helper.showErrors(errors);
			if (Pkg.end() == false) {
				pkgsets[fallback].insert(Pkg);
				continue;
			}
		}
		pkgsets[modID].insert(PackageSet::FromString(Cache, str, helper));
	}
	return pkgsets;
}
									/*}}}*/
// FromCommandLine - Return all packages specified on commandline	/*{{{*/
PackageSet PackageSet::FromCommandLine(pkgCacheFile &Cache, const char **cmdline, CacheSetHelper &helper) {
	PackageSet pkgset;
	for (const char **I = cmdline; *I != 0; ++I) {
		PackageSet pset = FromString(Cache, *I, helper);
		pkgset.insert(pset.begin(), pset.end());
	}
	return pkgset;
}
									/*}}}*/
// FromString - Return all packages matching a specific string		/*{{{*/
PackageSet PackageSet::FromString(pkgCacheFile &Cache, std::string const &str, CacheSetHelper &helper) {
	_error->PushToStack();

	PackageSet pkgset;
	pkgCache::PkgIterator Pkg = FromName(Cache, str, helper);
	if (Pkg.end() == false)
		pkgset.insert(Pkg);
	else {
		pkgset = FromTask(Cache, str, helper);
		if (pkgset.empty() == true) {
			pkgset = FromRegEx(Cache, str, helper);
			if (pkgset.empty() == true)
				pkgset = helper.canNotFindPackage(Cache, str);
		}
	}

	if (pkgset.empty() == false)
		_error->RevertToStack();
	else
		_error->MergeWithStack();
	return pkgset;
}
									/*}}}*/
// GroupedFromCommandLine - Return all versions specified on commandline/*{{{*/
std::map<unsigned short, VersionSet> VersionSet::GroupedFromCommandLine(
		pkgCacheFile &Cache, const char **cmdline,
		std::list<VersionSet::Modifier> const &mods,
		unsigned short const &fallback, CacheSetHelper &helper) {
	std::map<unsigned short, VersionSet> versets;
	for (const char **I = cmdline; *I != 0; ++I) {
		unsigned short modID = fallback;
		VersionSet::Version select = VersionSet::NEWEST;
		std::string str = *I;
		bool modifierPresent = false;
		for (std::list<VersionSet::Modifier>::const_iterator mod = mods.begin();
		     mod != mods.end(); ++mod) {
			if (modID == fallback && mod->ID == fallback)
				select = mod->SelectVersion;
			size_t const alength = strlen(mod->Alias);
			switch(mod->Pos) {
			case VersionSet::Modifier::POSTFIX:
				if (str.compare(str.length() - alength, alength,
						mod->Alias, 0, alength) != 0)
					continue;
				str.erase(str.length() - alength);
				modID = mod->ID;
				select = mod->SelectVersion;
				break;
			case VersionSet::Modifier::PREFIX:
				continue;
			case VersionSet::Modifier::NONE:
				continue;
			}
			modifierPresent = true;
			break;
		}

		if (modifierPresent == true) {
			bool const errors = helper.showErrors(false);
			VersionSet const vset = VersionSet::FromString(Cache, std::string(*I), select, helper, true);
			helper.showErrors(errors);
			if (vset.empty() == false) {
				versets[fallback].insert(vset);
				continue;
			}
		}
		versets[modID].insert(VersionSet::FromString(Cache, str, select , helper));
	}
	return versets;
}
									/*}}}*/
// FromCommandLine - Return all versions specified on commandline	/*{{{*/
APT::VersionSet VersionSet::FromCommandLine(pkgCacheFile &Cache, const char **cmdline,
		APT::VersionSet::Version const &fallback, CacheSetHelper &helper) {
	VersionSet verset;
	for (const char **I = cmdline; *I != 0; ++I)
		verset.insert(VersionSet::FromString(Cache, *I, fallback, helper));
	return verset;
}
									/*}}}*/
// FromString - Returns all versions spedcified by a string		/*{{{*/
APT::VersionSet VersionSet::FromString(pkgCacheFile &Cache, std::string pkg,
		APT::VersionSet::Version const &fallback, CacheSetHelper &helper,
		bool const &onlyFromName) {
	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;
	if (onlyFromName == false)
		pkgset = PackageSet::FromString(Cache, pkg, helper);
	else {
		pkgset.insert(PackageSet::FromName(Cache, pkg, helper));
	}

	VersionSet verset;
	for (PackageSet::const_iterator P = pkgset.begin();
	     P != pkgset.end(); ++P) {
		if (vertag == string::npos) {
			verset.insert(VersionSet::FromPackage(Cache, P, fallback, helper));
			continue;
		}
		pkgCache::VerIterator V;
		if (ver == "installed")
			V = getInstalledVer(Cache, P, helper);
		else if (ver == "candidate")
			V = getCandidateVer(Cache, P, helper);
		else {
			pkgVersionMatch Match(ver, (verIsRel == true ? pkgVersionMatch::Release :
					pkgVersionMatch::Version));
			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 (V.end() == true)
			continue;
		helper.showSelectedVersion(P, V, ver, verIsRel);
		verset.insert(V);
	}
	return verset;
}
									/*}}}*/
// FromPackage - versions from package based on fallback		/*{{{*/
VersionSet VersionSet::FromPackage(pkgCacheFile &Cache, pkgCache::PkgIterator const &P,
		VersionSet::Version const &fallback, CacheSetHelper &helper) {
	VersionSet verset;
	pkgCache::VerIterator V;
	bool showErrors;
	switch(fallback) {
	case VersionSet::ALL:
		if (P->VersionList != 0)
			for (V = P.VersionList(); V.end() != true; ++V)
				verset.insert(V);
		else
			verset.insert(helper.canNotFindAllVer(Cache, P));
		break;
	case VersionSet::CANDANDINST:
		verset.insert(getInstalledVer(Cache, P, helper));
		verset.insert(getCandidateVer(Cache, P, helper));
		break;
	case VersionSet::CANDIDATE:
		verset.insert(getCandidateVer(Cache, P, helper));
		break;
	case VersionSet::INSTALLED:
		verset.insert(getInstalledVer(Cache, P, helper));
		break;
	case VersionSet::CANDINST:
		showErrors = helper.showErrors(false);
		V = getCandidateVer(Cache, P, helper);
		if (V.end() == true)
			V = getInstalledVer(Cache, P, helper);
		helper.showErrors(showErrors);
		if (V.end() == false)
			verset.insert(V);
		else
			verset.insert(helper.canNotFindInstCandVer(Cache, P));
		break;
	case VersionSet::INSTCAND:
		showErrors = helper.showErrors(false);
		V = getInstalledVer(Cache, P, helper);
		if (V.end() == true)
			V = getCandidateVer(Cache, P, helper);
		helper.showErrors(showErrors);
		if (V.end() == false)
			verset.insert(V);
		else
			verset.insert(helper.canNotFindInstCandVer(Cache, P));
		break;
	case VersionSet::NEWEST:
		if (P->VersionList != 0)
			verset.insert(P.VersionList());
		else
			verset.insert(helper.canNotFindNewestVer(Cache, P));
		break;
	}
	return verset;
}
									/*}}}*/
// getCandidateVer - Returns the candidate version of the given package	/*{{{*/
pkgCache::VerIterator VersionSet::getCandidateVer(pkgCacheFile &Cache,
		pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
	pkgCache::VerIterator Cand;
	if (Cache.IsDepCacheBuilt() == true)
		Cand = Cache[Pkg].CandidateVerIter(Cache);
	else {
		if (unlikely(Cache.GetPolicy() == 0))
			return pkgCache::VerIterator(Cache);
		Cand = Cache.GetPolicy()->GetCandidateVer(Pkg);
	}
	if (Cand.end() == true)
		return helper.canNotFindCandidateVer(Cache, Pkg);
	return Cand;
}
									/*}}}*/
// getInstalledVer - Returns the installed version of the given package	/*{{{*/
pkgCache::VerIterator VersionSet::getInstalledVer(pkgCacheFile &Cache,
		pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
	if (Pkg->CurrentVer == 0)
		return helper.canNotFindInstalledVer(Cache, Pkg);
	return Pkg.CurrentVer();
}
									/*}}}*/
// canNotFindPkgName - handle the case no package has this name		/*{{{*/
pkgCache::PkgIterator CacheSetHelper::canNotFindPkgName(pkgCacheFile &Cache,
			std::string const &str) {
	if (ShowError == true)
		_error->Error(_("Unable to locate package %s"), str.c_str());
	return pkgCache::PkgIterator(Cache, 0);
}
									/*}}}*/
// canNotFindTask - handle the case no package is found for a task	/*{{{*/
PackageSet CacheSetHelper::canNotFindTask(pkgCacheFile &Cache, std::string pattern) {
	if (ShowError == true)
		_error->Error(_("Couldn't find task '%s'"), pattern.c_str());
	return PackageSet();
}
									/*}}}*/
// canNotFindRegEx - handle the case no package is found by a regex	/*{{{*/
PackageSet CacheSetHelper::canNotFindRegEx(pkgCacheFile &Cache, std::string pattern) {
	if (ShowError == true)
		_error->Error(_("Couldn't find any package by regex '%s'"), pattern.c_str());
	return PackageSet();
}
									/*}}}*/
// canNotFindPackage - handle the case no package is found from a string/*{{{*/
PackageSet CacheSetHelper::canNotFindPackage(pkgCacheFile &Cache, std::string const &str) {
	return PackageSet();
}
									/*}}}*/
// canNotFindAllVer							/*{{{*/
VersionSet CacheSetHelper::canNotFindAllVer(pkgCacheFile &Cache,
		pkgCache::PkgIterator const &Pkg) {
	if (ShowError == true)
		_error->Error(_("Can't select versions from package '%s' as it purely virtual"), Pkg.FullName(true).c_str());
	return VersionSet();
}
									/*}}}*/
// canNotFindInstCandVer						/*{{{*/
VersionSet CacheSetHelper::canNotFindInstCandVer(pkgCacheFile &Cache,
		pkgCache::PkgIterator const &Pkg) {
	if (ShowError == true)
		_error->Error(_("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
	return VersionSet();
}
									/*}}}*/
// canNotFindNewestVer							/*{{{*/
pkgCache::VerIterator CacheSetHelper::canNotFindNewestVer(pkgCacheFile &Cache,
		pkgCache::PkgIterator const &Pkg) {
	if (ShowError == true)
		_error->Error(_("Can't select newest version from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
	return pkgCache::VerIterator(Cache);
}
									/*}}}*/
// canNotFindCandidateVer						/*{{{*/
pkgCache::VerIterator CacheSetHelper::canNotFindCandidateVer(pkgCacheFile &Cache,
		pkgCache::PkgIterator const &Pkg) {
	if (ShowError == true)
		_error->Error(_("Can't select candidate version from package %s as it has no candidate"), Pkg.FullName(true).c_str());
	return pkgCache::VerIterator(Cache);
}
									/*}}}*/
// canNotFindInstalledVer						/*{{{*/
pkgCache::VerIterator CacheSetHelper::canNotFindInstalledVer(pkgCacheFile &Cache,
		pkgCache::PkgIterator const &Pkg) {
	if (ShowError == true)
		_error->Error(_("Can't select installed version from package %s as it is not installed"), Pkg.FullName(true).c_str());
	return pkgCache::VerIterator(Cache);
}
									/*}}}*/
}
Commit	Line	Data
ffee1c2b DK	1	// -- mode: cpp; mode: fold --
	2	// Description /{{{/
	3	/* ######################################################################
	4
	5	Simple wrapper around a std::set to provide a similar interface to
7959c5ed DK	6	a set of cache structures as to the complete set of all structures
7959c5ed DK	7	in the pkgCache. Currently only Package is supported.
ffee1c2b DK	8
	9	##################################################################### */
	10	/}}}/
	11	// Include Files /{{{/
78c32596	12	#include <apt-pkg/aptconfiguration.h>
ffee1c2b	13	#include <apt-pkg/error.h>
ffee1c2b	14	#include <apt-pkg/strutl.h>
856d3b06	15	#include <apt-pkg/versionmatch.h>
ffee1c2b DK	16
	17	#include <apti18n.h>
	18
dc0f01f7 DK	19	#include "cacheset.h"
dc0f01f7 DK	20
78c32596 DK	21	#include <vector>
78c32596 DK	22
ffee1c2b DK	23	#include <regex.h>
	24	/}}}/
	25	namespace APT {
dc0f01f7	26	// FromTask - Return all packages in the cache from a specific task /{{{/
70e706ad	27	PackageSet PackageSet::FromTask(pkgCacheFile &Cache, std::string pattern, CacheSetHelper &helper) {
bd631595	28	size_t const archfound = pattern.find_last_of(':');
dc0f01f7 DK	29	std::string arch = "native";
	30	if (archfound != std::string::npos) {
	31	arch = pattern.substr(archfound+1);
	32	pattern.erase(archfound);
	33	}
	34
	35	if (pattern[pattern.length() -1] != '^')
bd631595	36	return APT::PackageSet();
dc0f01f7 DK	37	pattern.erase(pattern.length()-1);
dc0f01f7 DK	38
bd631595 DK	39	if (unlikely(Cache.GetPkgCache() == 0 \|\| Cache.GetDepCache() == 0))
	40	return APT::PackageSet();
	41
	42	PackageSet pkgset;
dc0f01f7 DK	43	// get the records
	44	pkgRecords Recs(Cache);
	45
	46	// build regexp for the task
	47	regex_t Pattern;
	48	char S[300];
	49	snprintf(S, sizeof(S), "^Task:.*[, ]%s([, ]\|$)", pattern.c_str());
	50	if(regcomp(&Pattern,S, REG_EXTENDED \| REG_NOSUB \| REG_NEWLINE) != 0) {
	51	_error->Error("Failed to compile task regexp");
	52	return pkgset;
	53	}
	54
	55	for (pkgCache::GrpIterator Grp = Cache->GrpBegin(); Grp.end() == false; ++Grp) {
	56	pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
	57	if (Pkg.end() == true)
	58	continue;
	59	pkgCache::VerIterator ver = Cache[Pkg].CandidateVerIter(Cache);
	60	if(ver.end() == true)
	61	continue;
	62
	63	pkgRecords::Parser &parser = Recs.Lookup(ver.FileList());
	64	const char start, end;
	65	parser.GetRec(start,end);
	66	unsigned int const length = end - start;
	67	char buf[length];
	68	strncpy(buf, start, length);
	69	buf[length-1] = '\0';
70e706ad DK	70	if (regexec(&Pattern, buf, 0, 0, 0) != 0)
	71	continue;
	72
	73	pkgset.insert(Pkg);
dc0f01f7	74	}
70e706ad	75	regfree(&Pattern);
dc0f01f7 DK	76
dc0f01f7 DK	77	if (pkgset.empty() == true)
70e706ad	78	return helper.canNotFindTask(Cache, pattern);
dc0f01f7	79
70e706ad	80	helper.showTaskSelection(pkgset, pattern);
dc0f01f7 DK	81	return pkgset;
	82	}
	83	/}}}/
ffee1c2b	84	// FromRegEx - Return all packages in the cache matching a pattern /{{{/
70e706ad	85	PackageSet PackageSet::FromRegEx(pkgCacheFile &Cache, std::string pattern, CacheSetHelper &helper) {
6e235c66	86	static const char * const isregex = ".?+*\|[^$";
6e235c66	87	if (pattern.find_first_of(isregex) == std::string::npos)
bd631595	88	return PackageSet();
ffee1c2b	89
6e235c66	90	size_t archfound = pattern.find_last_of(':');
dc0f01f7	91	std::string arch = "native";
6e235c66 DK	92	if (archfound != std::string::npos) {
	93	arch = pattern.substr(archfound+1);
	94	if (arch.find_first_of(isregex) == std::string::npos)
	95	pattern.erase(archfound);
	96	else
	97	arch = "native";
	98	}
	99
ffee1c2b DK	100	regex_t Pattern;
ffee1c2b DK	101	int Res;
6e235c66	102	if ((Res = regcomp(&Pattern, pattern.c_str() , REG_EXTENDED \| REG_ICASE \| REG_NOSUB)) != 0) {
ffee1c2b DK	103	char Error[300];
	104	regerror(Res, &Pattern, Error, sizeof(Error));
	105	_error->Error(_("Regex compilation error - %s"), Error);
bd631595	106	return PackageSet();
ffee1c2b DK	107	}
ffee1c2b DK	108
bd631595 DK	109	if (unlikely(Cache.GetPkgCache() == 0))
	110	return PackageSet();
	111
	112	PackageSet pkgset;
856d3b06	113	for (pkgCache::GrpIterator Grp = Cache.GetPkgCache()->GrpBegin(); Grp.end() == false; ++Grp)
ffee1c2b DK	114	{
	115	if (regexec(&Pattern, Grp.Name(), 0, 0, 0) != 0)
	116	continue;
6e235c66	117	pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
78c32596	118	if (Pkg.end() == true) {
6e235c66 DK	119	if (archfound == std::string::npos) {
	120	std::vector<std::string> archs = APT::Configuration::getArchitectures();
	121	for (std::vector<std::string>::const_iterator a = archs.begin();
	122	a != archs.end() && Pkg.end() != true; ++a)
	123	Pkg = Grp.FindPkg(*a);
78c32596 DK	124	}
	125	if (Pkg.end() == true)
	126	continue;
	127	}
ffee1c2b	128
ffee1c2b DK	129	pkgset.insert(Pkg);
ffee1c2b DK	130	}
ffee1c2b DK	131	regfree(&Pattern);
ffee1c2b DK	132
70e706ad DK	133	if (pkgset.empty() == true)
	134	return helper.canNotFindRegEx(Cache, pattern);
	135
	136	helper.showRegExSelection(pkgset, pattern);
78c32596 DK	137	return pkgset;
	138	}
	139	/}}}/
bd631595 DK	140	// FromName - Returns the package defined by this string /{{{/
	141	pkgCache::PkgIterator PackageSet::FromName(pkgCacheFile &Cache,
	142	std::string const &str, CacheSetHelper &helper) {
	143	std::string pkg = str;
	144	size_t archfound = pkg.find_last_of(':');
	145	std::string arch;
	146	if (archfound != std::string::npos) {
	147	arch = pkg.substr(archfound+1);
	148	pkg.erase(archfound);
	149	}
	150
	151	if (Cache.GetPkgCache() == 0)
	152	return pkgCache::PkgIterator(Cache, 0);
	153
	154	pkgCache::PkgIterator Pkg(Cache, 0);
	155	if (arch.empty() == true) {
	156	pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(pkg);
	157	if (Grp.end() == false)
	158	Pkg = Grp.FindPreferredPkg();
	159	} else
	160	Pkg = Cache.GetPkgCache()->FindPkg(pkg, arch);
	161
	162	if (Pkg.end() == true)
	163	return helper.canNotFindPkgName(Cache, str);
	164	return Pkg;
	165	}
	166	/}}}/
9cc83a6f DK	167	// GroupedFromCommandLine - Return all versions specified on commandline/{{{/
	168	std::map<unsigned short, PackageSet> PackageSet::GroupedFromCommandLine(
	169	pkgCacheFile &Cache, const char **cmdline,
	170	std::list<PackageSet::Modifier> const &mods,
70e706ad	171	unsigned short const &fallback, CacheSetHelper &helper) {
9cc83a6f DK	172	std::map<unsigned short, PackageSet> pkgsets;
	173	for (const char *I = cmdline; I != 0; ++I) {
	174	unsigned short modID = fallback;
	175	std::string str = *I;
bd631595	176	bool modifierPresent = false;
9cc83a6f DK	177	for (std::list<PackageSet::Modifier>::const_iterator mod = mods.begin();
	178	mod != mods.end(); ++mod) {
	179	size_t const alength = strlen(mod->Alias);
	180	switch(mod->Pos) {
	181	case PackageSet::Modifier::POSTFIX:
	182	if (str.compare(str.length() - alength, alength,
55c59998	183	mod->Alias, 0, alength) != 0)
9cc83a6f DK	184	continue;
	185	str.erase(str.length() - alength);
	186	modID = mod->ID;
	187	break;
	188	case PackageSet::Modifier::PREFIX:
	189	continue;
	190	case PackageSet::Modifier::NONE:
	191	continue;
	192	}
bd631595	193	modifierPresent = true;
9cc83a6f DK	194	break;
9cc83a6f DK	195	}
bd631595 DK	196	if (modifierPresent == true) {
	197	bool const errors = helper.showErrors(false);
	198	pkgCache::PkgIterator Pkg = FromName(Cache, *I, helper);
	199	helper.showErrors(errors);
	200	if (Pkg.end() == false) {
	201	pkgsets[fallback].insert(Pkg);
	202	continue;
	203	}
	204	}
70e706ad	205	pkgsets[modID].insert(PackageSet::FromString(Cache, str, helper));
9cc83a6f DK	206	}
	207	return pkgsets;
	208	}
	209	/}}}/
78c32596	210	// FromCommandLine - Return all packages specified on commandline /{{{/
70e706ad	211	PackageSet PackageSet::FromCommandLine(pkgCacheFile &Cache, const char **cmdline, CacheSetHelper &helper) {
78c32596	212	PackageSet pkgset;
9f1f17cc	213	for (const char *I = cmdline; I != 0; ++I) {
70e706ad	214	PackageSet pset = FromString(Cache, *I, helper);
856d3b06 DK	215	pkgset.insert(pset.begin(), pset.end());
	216	}
	217	return pkgset;
	218	}
	219	/}}}/
	220	// FromString - Return all packages matching a specific string /{{{/
70e706ad	221	PackageSet PackageSet::FromString(pkgCacheFile &Cache, std::string const &str, CacheSetHelper &helper) {
48c39e32 DK	222	_error->PushToStack();
48c39e32 DK	223
bd631595 DK	224	PackageSet pkgset;
	225	pkgCache::PkgIterator Pkg = FromName(Cache, str, helper);
	226	if (Pkg.end() == false)
	227	pkgset.insert(Pkg);
	228	else {
	229	pkgset = FromTask(Cache, str, helper);
	230	if (pkgset.empty() == true) {
	231	pkgset = FromRegEx(Cache, str, helper);
	232	if (pkgset.empty() == true)
	233	pkgset = helper.canNotFindPackage(Cache, str);
	234	}
48c39e32	235	}
dc0f01f7	236
bd631595	237	if (pkgset.empty() == false)
48c39e32 DK	238	_error->RevertToStack();
	239	else
	240	_error->MergeWithStack();
bd631595	241	return pkgset;
856d3b06 DK	242	}
856d3b06 DK	243	/}}}/
55c59998 DK	244	// GroupedFromCommandLine - Return all versions specified on commandline/{{{/
	245	std::map<unsigned short, VersionSet> VersionSet::GroupedFromCommandLine(
	246	pkgCacheFile &Cache, const char **cmdline,
	247	std::list<VersionSet::Modifier> const &mods,
70e706ad	248	unsigned short const &fallback, CacheSetHelper &helper) {
55c59998 DK	249	std::map<unsigned short, VersionSet> versets;
	250	for (const char *I = cmdline; I != 0; ++I) {
	251	unsigned short modID = fallback;
	252	VersionSet::Version select = VersionSet::NEWEST;
	253	std::string str = *I;
bd631595	254	bool modifierPresent = false;
55c59998 DK	255	for (std::list<VersionSet::Modifier>::const_iterator mod = mods.begin();
	256	mod != mods.end(); ++mod) {
	257	if (modID == fallback && mod->ID == fallback)
	258	select = mod->SelectVersion;
	259	size_t const alength = strlen(mod->Alias);
	260	switch(mod->Pos) {
	261	case VersionSet::Modifier::POSTFIX:
	262	if (str.compare(str.length() - alength, alength,
	263	mod->Alias, 0, alength) != 0)
	264	continue;
	265	str.erase(str.length() - alength);
	266	modID = mod->ID;
	267	select = mod->SelectVersion;
	268	break;
	269	case VersionSet::Modifier::PREFIX:
	270	continue;
	271	case VersionSet::Modifier::NONE:
	272	continue;
	273	}
bd631595	274	modifierPresent = true;
55c59998 DK	275	break;
55c59998 DK	276	}
bd631595 DK	277
	278	if (modifierPresent == true) {
	279	bool const errors = helper.showErrors(false);
	280	VersionSet const vset = VersionSet::FromString(Cache, std::string(*I), select, helper, true);
	281	helper.showErrors(errors);
	282	if (vset.empty() == false) {
	283	versets[fallback].insert(vset);
	284	continue;
	285	}
	286	}
70e706ad	287	versets[modID].insert(VersionSet::FromString(Cache, str, select , helper));
55c59998 DK	288	}
	289	return versets;
	290	}
	291	/}}}/
856d3b06 DK	292	// FromCommandLine - Return all versions specified on commandline /{{{/
856d3b06 DK	293	APT::VersionSet VersionSet::FromCommandLine(pkgCacheFile &Cache, const char **cmdline,
70e706ad	294	APT::VersionSet::Version const &fallback, CacheSetHelper &helper) {
856d3b06	295	VersionSet verset;
bd631595 DK	296	for (const char *I = cmdline; I != 0; ++I)
bd631595 DK	297	verset.insert(VersionSet::FromString(Cache, *I, fallback, helper));
55c59998 DK	298	return verset;
	299	}
	300	/}}}/
	301	// FromString - Returns all versions spedcified by a string /{{{/
	302	APT::VersionSet VersionSet::FromString(pkgCacheFile &Cache, std::string pkg,
bd631595 DK	303	APT::VersionSet::Version const &fallback, CacheSetHelper &helper,
bd631595 DK	304	bool const &onlyFromName) {
55c59998 DK	305	std::string ver;
	306	bool verIsRel = false;
	307	size_t const vertag = pkg.find_last_of("/=");
	308	if (vertag != string::npos) {
	309	ver = pkg.substr(vertag+1);
	310	verIsRel = (pkg[vertag] == '/');
	311	pkg.erase(vertag);
	312	}
bd631595 DK	313	PackageSet pkgset;
	314	if (onlyFromName == false)
	315	pkgset = PackageSet::FromString(Cache, pkg, helper);
	316	else {
	317	pkgset.insert(PackageSet::FromName(Cache, pkg, helper));
	318	}
	319
55c59998 DK	320	VersionSet verset;
	321	for (PackageSet::const_iterator P = pkgset.begin();
	322	P != pkgset.end(); ++P) {
	323	if (vertag == string::npos) {
fb83c1d0	324	verset.insert(VersionSet::FromPackage(Cache, P, fallback, helper));
55c59998	325	continue;
856d3b06	326	}
55c59998 DK	327	pkgCache::VerIterator V;
55c59998 DK	328	if (ver == "installed")
70e706ad	329	V = getInstalledVer(Cache, P, helper);
55c59998	330	else if (ver == "candidate")
70e706ad	331	V = getCandidateVer(Cache, P, helper);
55c59998 DK	332	else {
	333	pkgVersionMatch Match(ver, (verIsRel == true ? pkgVersionMatch::Release :
	334	pkgVersionMatch::Version));
	335	V = Match.Find(P);
	336	if (V.end() == true) {
	337	if (verIsRel == true)
	338	_error->Error(_("Release '%s' for '%s' was not found"),
	339	ver.c_str(), P.FullName(true).c_str());
	340	else
	341	_error->Error(_("Version '%s' for '%s' was not found"),
	342	ver.c_str(), P.FullName(true).c_str());
84910ad5 DK	343	continue;
84910ad5 DK	344	}
78c32596	345	}
55c59998 DK	346	if (V.end() == true)
55c59998 DK	347	continue;
70e706ad	348	helper.showSelectedVersion(P, V, ver, verIsRel);
55c59998	349	verset.insert(V);
78c32596	350	}
856d3b06 DK	351	return verset;
	352	}
	353	/}}}/
fb83c1d0 DK	354	// FromPackage - versions from package based on fallback /{{{/
	355	VersionSet VersionSet::FromPackage(pkgCacheFile &Cache, pkgCache::PkgIterator const &P,
	356	VersionSet::Version const &fallback, CacheSetHelper &helper) {
	357	VersionSet verset;
84910ad5	358	pkgCache::VerIterator V;
70e706ad	359	bool showErrors;
84910ad5 DK	360	switch(fallback) {
	361	case VersionSet::ALL:
	362	if (P->VersionList != 0)
	363	for (V = P.VersionList(); V.end() != true; ++V)
	364	verset.insert(V);
84910ad5	365	else
70e706ad	366	verset.insert(helper.canNotFindAllVer(Cache, P));
84910ad5 DK	367	break;
84910ad5 DK	368	case VersionSet::CANDANDINST:
70e706ad DK	369	verset.insert(getInstalledVer(Cache, P, helper));
70e706ad DK	370	verset.insert(getCandidateVer(Cache, P, helper));
84910ad5 DK	371	break;
84910ad5 DK	372	case VersionSet::CANDIDATE:
70e706ad	373	verset.insert(getCandidateVer(Cache, P, helper));
84910ad5 DK	374	break;
84910ad5 DK	375	case VersionSet::INSTALLED:
70e706ad	376	verset.insert(getInstalledVer(Cache, P, helper));
84910ad5 DK	377	break;
84910ad5 DK	378	case VersionSet::CANDINST:
70e706ad DK	379	showErrors = helper.showErrors(false);
70e706ad DK	380	V = getCandidateVer(Cache, P, helper);
84910ad5	381	if (V.end() == true)
70e706ad DK	382	V = getInstalledVer(Cache, P, helper);
70e706ad DK	383	helper.showErrors(showErrors);
84910ad5 DK	384	if (V.end() == false)
84910ad5 DK	385	verset.insert(V);
84910ad5	386	else
70e706ad	387	verset.insert(helper.canNotFindInstCandVer(Cache, P));
84910ad5 DK	388	break;
84910ad5 DK	389	case VersionSet::INSTCAND:
70e706ad DK	390	showErrors = helper.showErrors(false);
70e706ad DK	391	V = getInstalledVer(Cache, P, helper);
84910ad5	392	if (V.end() == true)
70e706ad DK	393	V = getCandidateVer(Cache, P, helper);
70e706ad DK	394	helper.showErrors(showErrors);
84910ad5 DK	395	if (V.end() == false)
84910ad5 DK	396	verset.insert(V);
84910ad5	397	else
70e706ad	398	verset.insert(helper.canNotFindInstCandVer(Cache, P));
84910ad5 DK	399	break;
	400	case VersionSet::NEWEST:
	401	if (P->VersionList != 0)
	402	verset.insert(P.VersionList());
84910ad5	403	else
70e706ad	404	verset.insert(helper.canNotFindNewestVer(Cache, P));
84910ad5 DK	405	break;
84910ad5 DK	406	}
fb83c1d0	407	return verset;
84910ad5 DK	408	}
84910ad5 DK	409	/}}}/
856d3b06 DK	410	// getCandidateVer - Returns the candidate version of the given package /{{{/
856d3b06 DK	411	pkgCache::VerIterator VersionSet::getCandidateVer(pkgCacheFile &Cache,
70e706ad	412	pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
a8ef7efd DK	413	pkgCache::VerIterator Cand;
	414	if (Cache.IsDepCacheBuilt() == true)
	415	Cand = Cache[Pkg].CandidateVerIter(Cache);
	416	else {
bd631595 DK	417	if (unlikely(Cache.GetPolicy() == 0))
bd631595 DK	418	return pkgCache::VerIterator(Cache);
a8ef7efd DK	419	Cand = Cache.GetPolicy()->GetCandidateVer(Pkg);
a8ef7efd DK	420	}
70e706ad DK	421	if (Cand.end() == true)
70e706ad DK	422	return helper.canNotFindCandidateVer(Cache, Pkg);
856d3b06 DK	423	return Cand;
	424	}
	425	/}}}/
	426	// getInstalledVer - Returns the installed version of the given package /{{{/
	427	pkgCache::VerIterator VersionSet::getInstalledVer(pkgCacheFile &Cache,
70e706ad DK	428	pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
	429	if (Pkg->CurrentVer == 0)
	430	return helper.canNotFindInstalledVer(Cache, Pkg);
856d3b06	431	return Pkg.CurrentVer();
ffee1c2b DK	432	}
ffee1c2b DK	433	/}}}/
bd631595 DK	434	// canNotFindPkgName - handle the case no package has this name /{{{/
	435	pkgCache::PkgIterator CacheSetHelper::canNotFindPkgName(pkgCacheFile &Cache,
	436	std::string const &str) {
	437	if (ShowError == true)
	438	_error->Error(_("Unable to locate package %s"), str.c_str());
	439	return pkgCache::PkgIterator(Cache, 0);
	440	}
	441	/}}}/
70e706ad DK	442	// canNotFindTask - handle the case no package is found for a task /{{{/
	443	PackageSet CacheSetHelper::canNotFindTask(pkgCacheFile &Cache, std::string pattern) {
	444	if (ShowError == true)
	445	_error->Error(_("Couldn't find task '%s'"), pattern.c_str());
	446	return PackageSet();
	447	}
	448	/}}}/
	449	// canNotFindRegEx - handle the case no package is found by a regex /{{{/
	450	PackageSet CacheSetHelper::canNotFindRegEx(pkgCacheFile &Cache, std::string pattern) {
	451	if (ShowError == true)
	452	_error->Error(_("Couldn't find any package by regex '%s'"), pattern.c_str());
	453	return PackageSet();
	454	}
	455	/}}}/
	456	// canNotFindPackage - handle the case no package is found from a string/{{{/
	457	PackageSet CacheSetHelper::canNotFindPackage(pkgCacheFile &Cache, std::string const &str) {
70e706ad DK	458	return PackageSet();
	459	}
	460	/}}}/
	461	// canNotFindAllVer /{{{/
	462	VersionSet CacheSetHelper::canNotFindAllVer(pkgCacheFile &Cache,
	463	pkgCache::PkgIterator const &Pkg) {
	464	if (ShowError == true)
	465	_error->Error(_("Can't select versions from package '%s' as it purely virtual"), Pkg.FullName(true).c_str());
	466	return VersionSet();
	467	}
	468	/}}}/
	469	// canNotFindInstCandVer /{{{/
	470	VersionSet CacheSetHelper::canNotFindInstCandVer(pkgCacheFile &Cache,
	471	pkgCache::PkgIterator const &Pkg) {
	472	if (ShowError == true)
	473	_error->Error(_("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
	474	return VersionSet();
	475	}
	476	/}}}/
	477	// canNotFindNewestVer /{{{/
	478	pkgCache::VerIterator CacheSetHelper::canNotFindNewestVer(pkgCacheFile &Cache,
	479	pkgCache::PkgIterator const &Pkg) {
	480	if (ShowError == true)
	481	_error->Error(_("Can't select newest version from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
bd631595	482	return pkgCache::VerIterator(Cache);
70e706ad DK	483	}
	484	/}}}/
	485	// canNotFindCandidateVer /{{{/
	486	pkgCache::VerIterator CacheSetHelper::canNotFindCandidateVer(pkgCacheFile &Cache,
	487	pkgCache::PkgIterator const &Pkg) {
	488	if (ShowError == true)
	489	_error->Error(_("Can't select candidate version from package %s as it has no candidate"), Pkg.FullName(true).c_str());
bd631595	490	return pkgCache::VerIterator(Cache);
70e706ad DK	491	}
	492	/}}}/
	493	// canNotFindInstalledVer /{{{/
	494	pkgCache::VerIterator CacheSetHelper::canNotFindInstalledVer(pkgCacheFile &Cache,
	495	pkgCache::PkgIterator const &Pkg) {
	496	if (ShowError == true)
	497	_error->Error(_("Can't select installed version from package %s as it is not installed"), Pkg.FullName(true).c_str());
bd631595	498	return pkgCache::VerIterator(Cache);
70e706ad DK	499	}
70e706ad DK	500	/}}}/
ffee1c2b	501	}