From 7959c5eda83bd6d69876942566cf47d74fc76530 Mon Sep 17 00:00:00 2001
From: David Kalnischkies <kalnischkies@gmail.com>
Date: Mon, 31 May 2010 21:00:09 +0200
Subject: rename packageset into cacheset while it is not too late

---
 apt-pkg/cacheset.cc | 103 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 103 insertions(+)
 create mode 100644 apt-pkg/cacheset.cc

(limited to 'apt-pkg/cacheset.cc')

diff --git a/apt-pkg/cacheset.cc b/apt-pkg/cacheset.cc
new file mode 100644
index 000000000..b49b36539
--- /dev/null
+++ b/apt-pkg/cacheset.cc
@@ -0,0 +1,103 @@
+// -*- 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/cacheset.h>
+#include <apt-pkg/strutl.h>
+
+#include <apti18n.h>
+
+#include <vector>
+
+#include <regex.h>
+									/*}}}*/
+namespace APT {
+// FromRegEx - Return all packages in the cache matching a pattern	/*{{{*/
+PackageSet PackageSet::FromRegEx(pkgCache &Cache, std::string pattern, std::ostream &out) {
+	PackageSet pkgset;
+	std::string arch = "native";
+	static const char * const isregex = ".?+*|[^$";
+
+	if (pattern.find_first_of(isregex) == std::string::npos)
+		return pkgset;
+
+	size_t archfound = pattern.find_last_of(':');
+	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 pkgset;
+	}
+
+	for (pkgCache::GrpIterator Grp = Cache.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;
+		}
+
+		ioprintf(out, _("Note, selecting %s for regex '%s'\n"),
+			 Pkg.FullName(true).c_str(), pattern.c_str());
+
+		pkgset.insert(Pkg);
+	}
+
+	regfree(&Pattern);
+
+	return pkgset;
+}
+									/*}}}*/
+// FromCommandLine - Return all packages specified on commandline	/*{{{*/
+PackageSet PackageSet::FromCommandLine(pkgCache &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;
+			}
+		}
+		pkgset.insert(Pkg);
+	}
+	return pkgset;
+}
+									/*}}}*/
+}
-- 
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