factor regex package name matches into newly created cachefilter classes

[apt.git] / apt-pkg / cachefilter.cc

diff --git a/apt-pkg/cachefilter.cc b/apt-pkg/cachefilter.cc
new file mode 100644 (file)
index 0000000..8f0725e
--- /dev/null
+++ b/apt-pkg/cachefilter.cc
@@ -0,0 +1,54 @@
+// -*- mode: cpp; mode: fold -*-
+// Description                                                         /*{{{*/
+/** \file cachefilter.h
+    Collection of functor classes */
+                                                                       /*}}}*/
+// Include Files                                                       /*{{{*/
+#include <apt-pkg/cachefilter.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/pkgcache.h>
+
+#include <apti18n.h>
+
+#include <string>
+
+#include <regex.h>
+                                                                       /*}}}*/
+namespace APT {
+namespace CacheFilter {
+PackageNameMatchesRegEx::PackageNameMatchesRegEx(std::string const &Pattern) {/*{{{*/
+       pattern = new regex_t;
+       int const Res = regcomp(pattern, Pattern.c_str(), REG_EXTENDED | REG_ICASE | REG_NOSUB);
+       if (Res == 0)
+               return;
+
+       delete pattern;
+       pattern = NULL;
+       char Error[300];
+       regerror(Res, pattern, Error, sizeof(Error));
+       _error->Error(_("Regex compilation error - %s"), Error);
+}
+                                                                       /*}}}*/
+bool PackageNameMatchesRegEx::operator() (pkgCache::PkgIterator const &Pkg) {/*{{{*/
+       if (unlikely(pattern == NULL))
+               return false;
+       else
+               return regexec(pattern, Pkg.Name(), 0, 0, 0) == 0;
+}
+                                                                       /*}}}*/
+bool PackageNameMatchesRegEx::operator() (pkgCache::GrpIterator const &Grp) {/*{{{*/
+       if (unlikely(pattern == NULL))
+               return false;
+       else
+               return regexec(pattern, Grp.Name(), 0, 0, 0) == 0;
+}
+                                                                       /*}}}*/
+PackageNameMatchesRegEx::~PackageNameMatchesRegEx() {                  /*{{{*/
+       if (pattern == NULL)
+               return;
+       regfree(pattern);
+       delete pattern;
+}
+                                                                       /*}}}*/
+}
+}