* apt-pkg/versionmatch.cc:

  - Support matching pins by regular expressions or glob() like patterns,
    regular expressions have to be put between to slashes; for example,
    /.*/.

3 files changed, 52 insertions, 12 deletions

diff --git a/apt-pkg/versionmatch.cc b/apt-pkg/versionmatch.cc
index e5f0fafd2..72c9bff2d 100644
--- a/apt-pkg/versionmatch.cc
+++ b/apt-pkg/versionmatch.cc
@@ -18,6 +18,10 @@
 
 #include <stdio.h>
 #include <ctype.h>
+#include <fnmatch.h>
+#include <sys/types.h>
+#include <regex.h>
+
 									/*}}}*/
 
 // VersionMatch::pkgVersionMatch - Constructor				/*{{{*/
@@ -162,6 +166,36 @@ pkgCache::VerIterator pkgVersionMatch::Find(pkgCache::PkgIterator Pkg)
    // This will be Ended by now.
    return Ver;
 }
+
+#ifndef FNM_CASEFOLD
+#define FNM_CASEFOLD 0
+#endif
+
+bool pkgVersionMatch::ExpressionMatches(const char *pattern, const char *string)
+{
+   std::cerr << "MATCH " << pattern;
+   if (pattern[0] == '/') {
+      bool res = false;
+      size_t length = strlen(pattern);
+      if (pattern[length - 1] == '/') {
+	 regex_t preg;
+	 char *regex = strdup(pattern + 1);
+	 regex[length - 2] = '\0';
+	 if (regcomp(&preg, regex, REG_EXTENDED | REG_ICASE) != 0) {
+	    std::cerr << "E: Invalid regular expression: " << regex << "\n";
+	 } else if (regexec(&preg, string, 0, NULL, 0) == 0) {
+	    res = true;
+	 }
+	 free(regex);
+	 return res;
+      }
+   }
+   return fnmatch(pattern, string, FNM_CASEFOLD) == 0;
+}
+bool pkgVersionMatch::ExpressionMatches(const std::string& pattern, const char *string)
+{
+    return ExpressionMatches(pattern.c_str(), string);
+}
 									/*}}}*/
 // VersionMatch::FileMatch - Match against an index file		/*{{{*/
 // ---------------------------------------------------------------------
@@ -185,37 +219,37 @@ bool pkgVersionMatch::FileMatch(pkgCache::PkgFileIterator File)
 
       if (RelVerStr.empty() == false)
 	 if (File->Version == 0 ||
-	     MatchVer(File.Version(),RelVerStr,RelVerPrefixMatch) == false)
+	     (MatchVer(File.Version(),RelVerStr,RelVerPrefixMatch) == false &&
+	      ExpressionMatches(RelVerStr, File.Version()) == false))
 	    return false;
       if (RelOrigin.empty() == false)
-	 if (File->Origin == 0 ||
-	     stringcasecmp(RelOrigin,File.Origin()) != 0)
+	 if (File->Origin == 0 || !ExpressionMatches(RelOrigin,File.Origin()))
 	    return false;
       if (RelArchive.empty() == false)
 	 if (File->Archive == 0 ||
-	     stringcasecmp(RelArchive,File.Archive()) != 0)
+	     !ExpressionMatches(RelArchive,File.Archive()))
             return false;
       if (RelCodename.empty() == false)
 	 if (File->Codename == 0 ||
-	     stringcasecmp(RelCodename,File.Codename()) != 0)
+	     !ExpressionMatches(RelCodename,File.Codename()))
             return false;
       if (RelRelease.empty() == false)
 	 if ((File->Archive == 0 ||
-	     stringcasecmp(RelRelease,File.Archive()) != 0) &&
+	     !ExpressionMatches(RelRelease,File.Archive())) &&
              (File->Codename == 0 ||
-	      stringcasecmp(RelRelease,File.Codename()) != 0))
+	      !ExpressionMatches(RelRelease,File.Codename())))
 	       return false;
       if (RelLabel.empty() == false)
 	 if (File->Label == 0 ||
-	     stringcasecmp(RelLabel,File.Label()) != 0)
+	     !ExpressionMatches(RelLabel,File.Label()))
 	    return false;
       if (RelComponent.empty() == false)
 	 if (File->Component == 0 ||
-	     stringcasecmp(RelComponent,File.Component()) != 0)
+	     !ExpressionMatches(RelComponent,File.Component()))
 	    return false;
       if (RelArchitecture.empty() == false)
 	 if (File->Architecture == 0 ||
-	     stringcasecmp(RelArchitecture,File.Architecture()) != 0)
+	     !ExpressionMatches(RelArchitecture,File.Architecture()))
 	    return false;
       return true;
    }
@@ -223,12 +257,12 @@ bool pkgVersionMatch::FileMatch(pkgCache::PkgFileIterator File)
    if (Type == Origin)
    {
       if (OrSite.empty() == false) {
-	 if (File->Site == 0 || OrSite != File.Site())
+	 if (File->Site == 0 || !ExpressionMatches(OrSite, File.Site()))
 	    return false;
       } else // so we are talking about file:// or status file
 	 if (strcmp(File.Site(),"") == 0 && File->Archive != 0) // skip the status file
 	    return false;
-      return (OrSite == File.Site());		/* both strings match */
+      return (ExpressionMatches(OrSite, File.Site())); /* both strings match */
    }
 
    return false;
diff --git a/apt-pkg/versionmatch.h b/apt-pkg/versionmatch.h
index a8da072ae..39639a23d 100644
--- a/apt-pkg/versionmatch.h
+++ b/apt-pkg/versionmatch.h
@@ -67,6 +67,8 @@ class pkgVersionMatch
    enum MatchType {None = 0,Version,Release,Origin} Type;
    
    bool MatchVer(const char *A,string B,bool Prefix);
+   bool ExpressionMatches(const char *pattern, const char *string);
+   bool ExpressionMatches(const std::string& pattern, const char *string);
    bool FileMatch(pkgCache::PkgFileIterator File);
    pkgCache::VerIterator Find(pkgCache::PkgIterator Pkg);
 			       
diff --git a/debian/changelog b/debian/changelog
index 105936177..659facb37 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -4,6 +4,10 @@ apt (0.7.26~exp8) experimental; urgency=low
     - Handle different logins on the same server (Closes: #586904).
   * apt-pkg/deb/deblistparser.cc:
     - Handle architecture wildcards (Closes: #547724).
+  * apt-pkg/versionmatch.cc:
+    - Support matching pins by regular expressions or glob() like patterns,
+      regular expressions have to be put between to slashes; for example,
+      /.*/.
 
  -- Julian Andres Klode <jak@debian.org>  Thu, 24 Jun 2010 10:56:39 +0200