EmbeddedPkg: Extend NvVarStoreFormattedLib LIBRARY_CLASS

[mirror_edk2.git] / AppPkg / Applications / Python / Python-2.7.2 / Tools / scripts / h2py.py

#! /usr/bin/env python\r
\r
# Read #define's and translate to Python code.\r
# Handle #include statements.\r
# Handle #define macros with one argument.\r
# Anything that isn't recognized or doesn't translate into valid\r
# Python is ignored.\r
\r
# Without filename arguments, acts as a filter.\r
# If one or more filenames are given, output is written to corresponding\r
# filenames in the local directory, translated to all uppercase, with\r
# the extension replaced by ".py".\r
\r
# By passing one or more options of the form "-i regular_expression"\r
# you can specify additional strings to be ignored.  This is useful\r
# e.g. to ignore casts to u_long: simply specify "-i '(u_long)'".\r
\r
# XXX To do:\r
# - turn trailing C comments into Python comments\r
# - turn C Boolean operators "&& || !" into Python "and or not"\r
# - what to do about #if(def)?\r
# - what to do about macros with multiple parameters?\r
\r
import sys, re, getopt, os\r
\r
p_define = re.compile('^[\t ]*#[\t ]*define[\t ]+([a-zA-Z0-9_]+)[\t ]+')\r
\r
p_macro = re.compile(\r
  '^[\t ]*#[\t ]*define[\t ]+'\r
  '([a-zA-Z0-9_]+)\(([_a-zA-Z][_a-zA-Z0-9]*)\)[\t ]+')\r
\r
p_include = re.compile('^[\t ]*#[\t ]*include[\t ]+<([a-zA-Z0-9_/\.]+)')\r
\r
p_comment = re.compile(r'/\*([^*]+|\*+[^/])*(\*+/)?')\r
p_cpp_comment = re.compile('//.*')\r
\r
ignores = [p_comment, p_cpp_comment]\r
\r
p_char = re.compile(r"'(\\.[^\\]*|[^\\])'")\r
\r
p_hex = re.compile(r"0x([0-9a-fA-F]+)L?")\r
\r
filedict = {}\r
importable = {}\r
\r
try:\r
    searchdirs=os.environ['include'].split(';')\r
except KeyError:\r
    try:\r
        searchdirs=os.environ['INCLUDE'].split(';')\r
    except KeyError:\r
        try:\r
            if  sys.platform.find("beos") == 0:\r
                searchdirs=os.environ['BEINCLUDES'].split(';')\r
            elif sys.platform.startswith("atheos"):\r
                searchdirs=os.environ['C_INCLUDE_PATH'].split(':')\r
            else:\r
                raise KeyError\r
        except KeyError:\r
            searchdirs=['/usr/include']\r
\r
def main():\r
    global filedict\r
    opts, args = getopt.getopt(sys.argv[1:], 'i:')\r
    for o, a in opts:\r
        if o == '-i':\r
            ignores.append(re.compile(a))\r
    if not args:\r
        args = ['-']\r
    for filename in args:\r
        if filename == '-':\r
            sys.stdout.write('# Generated by h2py from stdin\n')\r
            process(sys.stdin, sys.stdout)\r
        else:\r
            fp = open(filename, 'r')\r
            outfile = os.path.basename(filename)\r
            i = outfile.rfind('.')\r
            if i > 0: outfile = outfile[:i]\r
            modname = outfile.upper()\r
            outfile = modname + '.py'\r
            outfp = open(outfile, 'w')\r
            outfp.write('# Generated by h2py from %s\n' % filename)\r
            filedict = {}\r
            for dir in searchdirs:\r
                if filename[:len(dir)] == dir:\r
                    filedict[filename[len(dir)+1:]] = None  # no '/' trailing\r
                    importable[filename[len(dir)+1:]] = modname\r
                    break\r
            process(fp, outfp)\r
            outfp.close()\r
            fp.close()\r
\r
def pytify(body):\r
    # replace ignored patterns by spaces\r
    for p in ignores:\r
        body = p.sub(' ', body)\r
    # replace char literals by ord(...)\r
    body = p_char.sub("ord('\\1')", body)\r
    # Compute negative hexadecimal constants\r
    start = 0\r
    UMAX = 2*(sys.maxint+1)\r
    while 1:\r
        m = p_hex.search(body, start)\r
        if not m: break\r
        s,e = m.span()\r
        val = long(body[slice(*m.span(1))], 16)\r
        if val > sys.maxint:\r
            val -= UMAX\r
            body = body[:s] + "(" + str(val) + ")" + body[e:]\r
        start = s + 1\r
    return body\r
\r
def process(fp, outfp, env = {}):\r
    lineno = 0\r
    while 1:\r
        line = fp.readline()\r
        if not line: break\r
        lineno = lineno + 1\r
        match = p_define.match(line)\r
        if match:\r
            # gobble up continuation lines\r
            while line[-2:] == '\\\n':\r
                nextline = fp.readline()\r
                if not nextline: break\r
                lineno = lineno + 1\r
                line = line + nextline\r
            name = match.group(1)\r
            body = line[match.end():]\r
            body = pytify(body)\r
            ok = 0\r
            stmt = '%s = %s\n' % (name, body.strip())\r
            try:\r
                exec stmt in env\r
            except:\r
                sys.stderr.write('Skipping: %s' % stmt)\r
            else:\r
                outfp.write(stmt)\r
        match = p_macro.match(line)\r
        if match:\r
            macro, arg = match.group(1, 2)\r
            body = line[match.end():]\r
            body = pytify(body)\r
            stmt = 'def %s(%s): return %s\n' % (macro, arg, body)\r
            try:\r
                exec stmt in env\r
            except:\r
                sys.stderr.write('Skipping: %s' % stmt)\r
            else:\r
                outfp.write(stmt)\r
        match = p_include.match(line)\r
        if match:\r
            regs = match.regs\r
            a, b = regs[1]\r
            filename = line[a:b]\r
            if importable.has_key(filename):\r
                outfp.write('from %s import *\n' % importable[filename])\r
            elif not filedict.has_key(filename):\r
                filedict[filename] = None\r
                inclfp = None\r
                for dir in searchdirs:\r
                    try:\r
                        inclfp = open(dir + '/' + filename)\r
                        break\r
                    except IOError:\r
                        pass\r
                if inclfp:\r
                    outfp.write(\r
                            '\n# Included from %s\n' % filename)\r
                    process(inclfp, outfp, env)\r
                else:\r
                    sys.stderr.write('Warning - could not find file %s\n' %\r
                                     filename)\r
\r
if __name__ == '__main__':\r
    main()\r