added support for rar archives

src/filters/rclrar

@@ -0,0 +1,87 @@
+#!/usr/bin/env python
+
+# Rar file filter for Recoll
+# Adapted from the Zip archive filter by mroark.
+# Copyright (C) 2004 J.F.Dockes + mroark for rar bits
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program; if not, write to the
+#   Free Software Foundation, Inc.,
+#   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+
+import rclexecm
+try:
+    from rarfile import RarFile
+except:
+    print "RECFILTERROR HELPERNOTFOUND python:rarfile"
+    sys.exit(1);
+
+# Requires RarFile python module. Try "sudo pip install rarfile"
+#
+# This is identical to rclzip except I did a search/replace from zip
+# to rar, and changed this comment.
+class RarExtractor:
+    def __init__(self, em):
+        self.currentindex = 0
+        self.em = em
+
+    def extractone(self, ipath):
+        #self.em.rclog("extractone: [%s]" % ipath)
+        docdata = ""
+        try:
+            docdata = self.rar.read(ipath)
+            ok = True
+        except Exception, err:
+#            self.em.rclog("extractone: failed: [%s]" % err)
+            ok = False
+        iseof = rclexecm.RclExecM.noteof
+        if self.currentindex >= len(self.rar.namelist()) -1:
+            iseof = rclexecm.RclExecM.eofnext
+        if isinstance(ipath, unicode):
+            ipath = ipath.encode("utf-8")
+        return (ok, docdata, ipath, iseof)
+
+    ###### File type handler api, used by rclexecm ---------->
+    def openfile(self, params):
+        self.currentindex = 0
+        try:
+            self.rar = RarFile(params["filename:"])
+            return True
+        except:
+            return False
+
+    def getipath(self, params):
+        ipath = params["ipath:"]
+        ok, data, ipath, eof = self.extractone(ipath)
+        if ok:
+            return (ok, data, ipath, eof)
+        # Not found. Maybe we need to decode the path?
+        try:
+            ipath = ipath.decode("utf-8")
+            return self.extractone(ipath)
+        except Exception, err:
+            return (ok, data, ipath, eof)
+        
+    def getnext(self, params):
+        if self.currentindex >= len(self.rar.namelist()):
+            #self.em.rclog("getnext: EOF hit")
+            return (False, "", "", rclexecm.RclExecM.eofnow)
+        else:
+            ret= self.extractone(self.rar.namelist()[self.currentindex])
+            self.currentindex += 1
+            return ret
+
+# Main program: create protocol handler and extractor and run them
+proto = rclexecm.RclExecM()
+extract = RarExtractor(proto)
+rclexecm.main(proto, extract)