From c8db3fff877f102dc6fb62c4e4c7f700160b68f5 Mon Sep 17 00:00:00 2001
From: David Kalnischkies <kalnischkies@gmail.com>
Date: Fri, 2 Jul 2010 07:06:53 +0200
Subject: add a ConstructedBy member to the PackageSet which can be used by the
 e.g. FromString to tell the caller if the string was an exact match or found
 by regex or task. The two later ones can match packages for which we want to
 ignore failures in the VersionSet

---
 cmdline/cacheset.cc | 26 ++++++++++++++++----------
 1 file changed, 16 insertions(+), 10 deletions(-)

(limited to 'cmdline/cacheset.cc')

diff --git a/cmdline/cacheset.cc b/cmdline/cacheset.cc
index cc2860a22..4d6d6a87c 100644
--- a/cmdline/cacheset.cc
+++ b/cmdline/cacheset.cc
@@ -33,13 +33,13 @@ PackageSet PackageSet::FromTask(pkgCacheFile &Cache, std::string pattern, CacheS
 	}
 
 	if (pattern[pattern.length() -1] != '^')
-		return APT::PackageSet();
+		return APT::PackageSet(TASK);
 	pattern.erase(pattern.length()-1);
 
 	if (unlikely(Cache.GetPkgCache() == 0 || Cache.GetDepCache() == 0))
-		return APT::PackageSet();
+		return APT::PackageSet(TASK);
 
-	PackageSet pkgset;
+	PackageSet pkgset(TASK);
 	// get the records
 	pkgRecords Recs(Cache);
 
@@ -85,7 +85,7 @@ PackageSet PackageSet::FromTask(pkgCacheFile &Cache, std::string pattern, CacheS
 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();
+		return PackageSet(REGEX);
 
 	size_t archfound = pattern.find_last_of(':');
 	std::string arch = "native";
@@ -103,13 +103,13 @@ PackageSet PackageSet::FromRegEx(pkgCacheFile &Cache, std::string pattern, Cache
 		char Error[300];
 		regerror(Res, &Pattern, Error, sizeof(Error));
 		_error->Error(_("Regex compilation error - %s"), Error);
-		return PackageSet();
+		return PackageSet(REGEX);
 	}
 
 	if (unlikely(Cache.GetPkgCache() == 0))
-		return PackageSet();
+		return PackageSet(REGEX);
 
-	PackageSet pkgset;
+	PackageSet pkgset(REGEX);
 	for (pkgCache::GrpIterator Grp = Cache.GetPkgCache()->GrpBegin(); Grp.end() == false; ++Grp)
 	{
 		if (regexec(&Pattern, Grp.Name(), 0, 0, 0) != 0)
@@ -318,8 +318,12 @@ APT::VersionSet VersionSet::FromString(pkgCacheFile &Cache, std::string pkg,
 	}
 
 	VersionSet verset;
+	bool errors = true;
+	if (pkgset.getConstructor() != PackageSet::UNKNOWN)
+		errors = helper.showErrors(false);
 	for (PackageSet::const_iterator P = pkgset.begin();
 	     P != pkgset.end(); ++P) {
+		helper.canNotFindCandidateVer(Cache, P);
 		if (vertag == string::npos) {
 			verset.insert(VersionSet::FromPackage(Cache, P, fallback, helper));
 			continue;
@@ -348,6 +352,8 @@ APT::VersionSet VersionSet::FromString(pkgCacheFile &Cache, std::string pkg,
 		helper.showSelectedVersion(P, V, ver, verIsRel);
 		verset.insert(V);
 	}
+	if (pkgset.getConstructor() != PackageSet::UNKNOWN)
+		helper.showErrors(errors);
 	return verset;
 }
 									/*}}}*/
@@ -487,7 +493,7 @@ 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);
+	return pkgCache::VerIterator(Cache, 0);
 }
 									/*}}}*/
 // canNotFindCandidateVer						/*{{{*/
@@ -495,7 +501,7 @@ 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);
+	return pkgCache::VerIterator(Cache, 0);
 }
 									/*}}}*/
 // canNotFindInstalledVer						/*{{{*/
@@ -503,7 +509,7 @@ 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);
+	return pkgCache::VerIterator(Cache, 0);
 }
 									/*}}}*/
 }
-- 
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