list2depends

This programme contains head file and library file of gcc.

#!/usr/bin/env python
# -*- mode: python; coding: utf-8 -*-
# Copyright 漏 2002 Colin Walters <[e-mail]>

import sys, re, os, string, getopt

try:
    opts, args = getopt.getopt(sys.argv[1:], 'd', ['debug'])
except getopt.GetoptError, e:
    sys.stderr.write("Error reading arguments: %s\n" % e)
    sys.exit(1)

debug = 0

for (key, val) in opts:
    if key in ('-d', '--debug'):
        debug = 1

target_arch = args[0]

begin_header = 'BEGIN LIST OF PACKAGES\n'
end_header = 'END LIST OF PACKAGES\n'

comment_re = re.compile("^\s+")
depends_re = re.compile('([-a-z0-9+.]+)\s*(\\(.+?\\))?\s*(\\[(.+?)\\])?')

line = sys.stdin.readline()

while (not len(line) == 0) and (not line == begin_header):
    line = sys.stdin.readline()
        
if len(line) == 0:
    sys.stderr.write("Couldn't find start token '%s'\n" % (begin_header,))
    sys.exit(1)

line = sys.stdin.readline()
pkgs = []
while (not len(line) == 0) and (not line == end_header):
    if line == '\n' or comment_re.search(line):
        line = sys.stdin.readline()
        continue
    orlist = line.strip().split('|')
    orresult = []
    for pkg in orlist:
        if debug:
            sys.stderr.write("processing pkg '%s'\n" %(pkg,))
        match = depends_re.search(pkg)
        if match:
            pkgname = match.group(1).strip()
            verdep = match.group(2)
            if not verdep:
                verdep = ''
            verdep = verdep.strip()
            archdeps = match.group(4) 
            if debug:
                sys.stderr.write("data: '%s' '%s' '%s'\n" % (pkgname, verdep, archdeps))
            included = 1
            if archdeps:
                archdeps = match.group(4).strip().split()
                included = 0
                for arch in archdeps:
                    if debug:
                        sys.stderr.write('processing arch %s\n' % (arch,))
                    negated = 0
                    if arch[0] == '!':
                        negated = 1
                        arch = arch[1:]
                    if target_arch == arch and negated:
                        if debug:
                            sys.stderr.write('not including ')
                        included = 0
                        break
                    elif target_arch == arch and not negated:
                        if debug:
                            sys.stderr.write('including ')
                        included = 1
                    elif target_arch != arch and negated:
                        if debug:
                            sys.stderr.write('including ')
                        included = 1
            if included:
                pkgval = pkgname + ' ' + verdep
                if debug:
                    sys.stderr.write('\norresult += ' + pkgval + '\n')
                orresult.append(pkgval)
    if len(orresult) > 0:
        pkgs.append(orresult)
    line = sys.stdin.readline()
    
if len(line) == 0:
    sys.stderr.write("Couldn't find end token '%s'\n" % (end_header,))
    sys.exit(1)

sys.stdout.write(string.join(map(lambda x: string.join(map(string.strip, x), ' | '), pkgs), ', '))