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# # axi - apt-xapian-index python modules # # Copyright (C) 2007--2010 Enrico Zini <enrico@debian.org> # # 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 os import os.path import sys import re
# Setup configuration PLUGINDIR = os.environ.get("AXI_PLUGIN_DIR", "/usr/share/apt-xapian-index/plugins") XAPIANDBPATH = os.environ.get("AXI_DB_PATH", "/var/lib/apt-xapian-index") XAPIANDBSTAMP = os.path.join(XAPIANDBPATH, "update-timestamp") XAPIANDBLOCK = os.path.join(XAPIANDBPATH, "update-lock") XAPIANDBUPDATESOCK = os.path.join(XAPIANDBPATH, "update-socket") XAPIANDBVALUES = os.path.join(XAPIANDBPATH, "values") XAPIANDBDOC = os.path.join(XAPIANDBPATH, "README") XAPIANINDEX = os.path.join(XAPIANDBPATH, "index") XAPIANCACHEPATH = os.environ.get("AXI_CACHE_PATH", "/var/cache/apt-xapian-index")
# Default value database in case one cannot be read DEFAULT_VALUES = dict(version=0, installedsize=1, packagesize=2) DEFAULT_VALUE_DESCS = dict( version="package version", installedsize="installed size", packagesize="package size" )
def readValueDB(pathname=XAPIANDBVALUES, quiet=False): """ Read the "/etc/services"-style database of value indices """ try: re_empty = re.compile("^\s*(?:#.*)?$") re_value = re.compile("^(\S+)\s+(\d+)(?:\s*#\s*(.+))?$") values = {} descs = {} for idx, line in enumerate(open(pathname)): # Skip empty lines and comments if re_empty.match(line): continue # Parse teh rest mo = re_value.match(line) if not mo: if not quiet: print >>sys.stderr, "%s:%d: line is not `name value [# description]': ignored" % (pathname, idx+1) continue # Parse the number name = mo.group(1) number = int(mo.group(2)) desc = mo.group(3) or ""
values[name] = number descs[name] = desc except (OSError, IOError), e: # If we can't read the database, fallback to defaults if not quiet: print >>sys.stderr, "%s: %s. Falling back on a default value database" % (pathname, e) values = DEFAULT_VALUES descs = DEFAULT_VALUE_DESCS return values, descs
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