symbian-qemu-0.9.1-12/python-2.6.1/Tools/modulator/varsubst.py
author johnathan.white@2718R8BGH51.accenture.com
Mon, 08 Mar 2010 18:45:03 +0000
changeset 46 b6935a90ca64
parent 1 2fb8b9db1c86
permissions -rw-r--r--
Modify framebuffer and NGA framebuffer to read screen size from board model dtb file. Optimise memory usuage of frame buffer Add example minigui application with hooks to profiler (which writes results to S:\). Modified NGA framebuffer to run its own dfc queue at high priority

#
# Variable substitution. Variables are $delimited$
#
import re

error = 'varsubst.error'

class Varsubst:
    def __init__(self, dict):
        self.dict = dict
        self.prog = re.compile('\$([a-zA-Z0-9_]*)\$')
        self.do_useindent = 0

    def useindent(self, onoff):
        self.do_useindent = onoff

    def subst(self, s):
        rv = ''
        while 1:
            m = self.prog.search(s)
            if not m:
                return rv + s
            rv = rv + s[:m.start()]
            s = s[m.end():]
            if m.end() - m.start() == 2:
                # Escaped dollar
                rv = rv + '$'
                s = s[2:]
                continue
            name = m.group(1)
            if not self.dict.has_key(name):
                raise error, 'No such variable: '+name
            value = self.dict[name]
            if self.do_useindent and '\n' in value:
                value = self._modindent(value, rv)
            rv = rv + value

    def _modindent(self, value, old):
        lastnl = old.rfind('\n', 0) + 1
        lastnl = len(old) - lastnl
        sub = '\n' + (' '*lastnl)
        return re.sub('\n', sub, value)

def _test():
    import sys
    import os

    sys.stderr.write('-- Copying stdin to stdout with environment map --\n')
    c = Varsubst(os.environ)
    c.useindent(1)
    d = sys.stdin.read()
    sys.stdout.write(c.subst(d))
    sys.exit(1)

if __name__ == '__main__':
    _test()