umakepp.py

linux下的一款播放器

# 
# ***** BEGIN LICENSE BLOCK *****
# Source last modified: $Id: umakepp.py,v 1.4 2004/08/31 22:01:25 hubbe Exp $
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"""Umake pre-processor and code morpher.  Umakefil/*.pcf files have
depricated syntax which is converted to new syntax, commented out, and
morphed before it can be executed through umake.py."""

import os
import string
import re
import sys
import umake_lib

def pylex(ib, name):
    """Takes a input buffer of Python.  It then removes comments, blank lines,
    explicit line continuations, and implicit line continuations.  This
    prepares the Python code for the regular expression matching used to
    morph the code."""

    if len(ib) == 0:
        return ""

    ib = string.replace(ib, "\r\n","\n")
    ib = string.replace(ib, "\r","\n")

    ## This is not safe - Hubbe
    #ib = string.expandtabs(ib, 8)


    if ib[-1] != "\n":
        ib = ib + "\n"

    ci = 0
    li = 1
    lines = []
    
    r_begin = re.compile("[ \t]*[^] \t()[{}\"'\n#\\\\]*")
    r_white = re.compile("[ \t]*")
    r_normal = re.compile("[^] \t()[{}\"'\n#\\\\]*")
    _openers = ["(", "[", "{"]
    _closers = [")", "]", "}"]
    r_normstr= re.compile("[^\n\"'\\\\]*")

    while ci < len(ib):
        ## Preserve whitespace in beginning
        m = r_begin.match(ib, ci)
        line = m.group(0)
        ci = m.end(0)

        par = 0
        while 1:
            # print "POS = %s:%d (%s, %d) par=%d" % (name, ci+1, repr(ib[ci]), ord(ib[ci]),par)

            if ib[ci] == "\n":
                li = li + 1
                ci = ci + 1

                if par:
                    if line[-1] != " ":
                        line=line+" "

                    if ci >= len(ib):
                        print "umakepp: Missing close parenthesis/braces in file %s" % (name)
                        return []
                else:
                    break
                
            if ib[ci] in _openers:
                par = par + 1
                line = line + ib[ci]
                ci = ci + 1

            if ib[ci] in _closers:
                par = par - 1
                line = line + ib[ci]
                ci = ci + 1
            
            if ib[ci] in [" ", "\t"]:
                if line[-1] != " ":
                    line=line+" "
                m=r_white.match(ib, ci)
                ci=m.end(0)

            if ib[ci] == "#":
                p = string.find(ib, "\n", ci)
                ci = p
                continue

            if ib[ci] in ["'", '"']:
                s = ib[ci]
                ci = ci + 1
                while 1:
                    m=r_normstr.match(ib, ci)
                    s=s+m.group(0)
                    ci=m.end(0)

                    if ib[ci] == "\n":
                        print "umakepp: Newline in string %s:%d" % (name, li)
                        return []

                    if ib[ci] == '\\':
                        if ib[ci+1] == '\n':
                            ci = ci + 2
                            li = li + 1
                            if ci >= len(ib):
                                print "umakepp: End of file in string %s" % (name)
                                return []
                            continue
                        s = s + ib[ci:ci+2]
                        ci = ci + 2
                        continue

                    s=s+ib[ci]
                    ci = ci + 1
                    if s[-1] == s[0]:
                        break

                line = line + s

            if ib[ci] == '\\':
                if ib[ci+1] == '\n':
                    ci = ci + 2
                    li = li + 1
                    if ci >= len(ib):
                        break
                else:
                    s = s + ib[ci:ci+2]
                    ci = ci + 2

            m=r_normal.match(ib,ci)
            line = line + m.group(0)
            ci=m.end(0)
                
        lines.append(line)

    return lines



def remove_line_continuations(um_buff, name):
    """Takes a string of Python code as input, runs it through pylex() to
    remove line continuations, then it removes all the blank lines.  It
    returns a list of strings with one Python statment per line."""

    umake_lib.debug("calling pylex..")
    _line_list = pylex(um_buff, name)
    umake_lib.debug("pylex done")

    line_list = []
    for line in _line_list:
        line = string.rstrip(line)
        if len(line) == 0:
            continue
        line_list.append(line)

    return line_list

##
## Umakefil/*.pcf command translation functions
##
def rpl_print(m):
    temp = "pre-processor removed=\"%s\"" % (m.group(2))
    return "%spass ## %s" % (m.group(1), temp)

def rpl_target_name(m):
    return "project.SetFakeTargetName(%s)" % (m.group(2))

def rpl_lib_subdir(m):
    return "project.output_dir"

def rpl_pass(m):
    temp = "pre-processor removed=\"%s\"" % (m.group(1))
    return "pass ## %s" % (temp)

def rpl_EmptyTarget(m):
    temp = "pre-processor removed=\"%s\"" % (m.group(1))
    return "EmptyTarget() ## %s" % (temp)

def rpl_sources(m):
    return "project.AddSources(%s)" % (m.group(2))
def rpl_objsrcs(m):
    return "project.AddSourceObjects(%s)" % (m.group(2))
def rpl_includes(m):
    return "project.AddIncludes(%s)" % (m.group(2))
def rpl_defines(m):
    return "project.AddDefines(%s)" % (m.group(2))
def rpl_libraries(m):
    return "project.AddLibraries(%s)" % (m.group(2))
def rpl_libraries2(m):
    return "project.AddLibraries2(%s)" % (m.group(2))
def rpl_sys_libraries(m):
    return "project.AddSystemLibraries(%s)" % (m.group(2))
def rpl_dynamic_libraries(m):
    return "project.AddDynamicLibraries(%s)" % (m.group(2))
def rpl_module_libs(m):
    return "project.AddModuleLibraries(%s)" % (m.group(2))