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[/] [c0or1k/] [trunk/] [tools/] [cml2-tools/] [configtrans.py] - Rev 3
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#!/usr/bin/env python """ configtrans.py -- translate between CML1 and CML2 config formats. This handles the impedance mismatch between CML2's explicit NAME=VALUE output format and the formats expected by the Linux build machinery. Note: it also makes backups whenever it touches a file. configtrans.py -h includeout -s configout cml2file configtrans.py -t <newconfig >oldconfig """ import sys, os, getopt, re def linetrans(hook, instream, outstream, trailer=None): "Line-by-line translation between streams." if not hasattr(instream, "readline"): instream = open(instream, "r") if not hasattr(outstream, "readline"): outstream = open(outstream, "w") while 1: line = instream.readline() if not line: break new = hook(line) if new: outstream.write(new) instream.close() if trailer: outstream.write(trailer) outstream.close() def write_include(line): "Transform a SYMBOL=VALUE line to CML1 include format." if line.find("PRIVATE") > -1 or line[:2] == "$$": return "" match = isnotset.match(line) if match: return "#undef %s\n" % match.group(1) if line == "#\n": return None elif line[0] == "#": return "/* " + line[1:].strip() + " */\n" eq = line.find("=") if eq == -1: return line else: line = line.split('#')[0] symbol = line[:eq] value = line[eq+1 :].strip() if value == 'y': return "#define %s 1\n" % symbol elif value == 'm': return "#undef %s\n#define %s_MODULE 1\n" % (symbol, symbol) elif value == 'n': return "#undef %s\n" % symbol else: return "#define %s %s\n" % (symbol, value) def write_defconfig(line): "Transform a SYMBOL=VALUE line to CML1 defconfig format." if line[:2] == "$$": return "" eq = line.find("=") if eq == -1: return line else: line = line.split('#')[0] line = line.strip() if len(line) == 0 or line[-1] != "\n": line += "\n" symbol = line[:eq] value = line[eq+1:].strip() if value == 'n': return "# %s is not set\n" % symbol else: return line def revert(line): "Translate a CML1 defconfig file to CML2 format." match = isnotset.match(line) if match: return "%s=n\n" % match.group(1) else: return line if __name__ == '__main__': isnotset = re.compile("^# (.*) is not set") include = defconfig = translate = None (options, arguments) = getopt.getopt(sys.argv[1:], "h:s:t") for (switch, val) in options: if switch == '-h': includefile = val try: os.rename(val, val + ".old") except OSError: pass elif switch == '-s': defconfig = val try: os.rename(val, val + ".old") except OSError: pass elif switch == '-t': translate = 1 if len(arguments) > 0: try: if includefile: linetrans(write_include, arguments[0], includefile, "#define AUTOCONF_INCLUDED\n") if defconfig: linetrans(write_defconfig, arguments[0], defconfig) except IOError, args: sys.stderr.write("configtrans: " + args[1] + "\n"); raise SystemExit, 1 elif translate: linetrans(revert, sys.stdin, sys.stdout) else: print "usage: configtrans.py -t [-h includefile] [-s defconfig] file" raise SystemExit, 1 # That's all, folks!
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