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// -*- 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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