"""SCons.Platform.win32

Platform-specific initialization for Win32 systems.

There normally shouldn't be any need to import this module directly.  It
will usually be imported through the generic SCons.Platform.Platform()
selection method.
"""

#
# Copyright (c) 2001, 2002, 2003 Steven Knight
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#

__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"

import SCons.Util
import os
import os.path
import string
import sys

#

def TempFileMunge(env, cmd_list, for_signature): 
    """Given a list of command line arguments, see if it is too
    long to pass to the win32 command line interpreter.  If so,
    create a temp file, then pass "@tempfile" as the sole argument
    to the supplied command (which is the first element of cmd_list).
    Otherwise, just return [cmd_list]."""
    cmd = env.subst_list(cmd_list)[0]
    if for_signature or \
       (reduce(lambda x, y: x + len(y), cmd, 0) + len(cmd)) <= 2048:
        return [cmd_list]
    else:
        import tempfile
        # We do a normpath because mktemp() has what appears to be
        # a bug in Win32 that will use a forward slash as a path
        # delimiter.  Win32's link mistakes that for a command line
        # switch and barfs.
        tmp = os.path.normpath(tempfile.mktemp())
        args = map(SCons.Util.quote_spaces, cmd[1:])
        open(tmp, 'w').write(string.join(args, " ") + "\n")
        return [ [cmd[0], '@' + tmp],
                 ['del', tmp] ]

# The upshot of all this is that, if you are using Python 1.5.2,
# you had better have cmd or command.com in your PATH when you run
# scons.

def spawn(sh, escape, cmd, args, env):
    if not sh:
        sys.stderr.write("scons: Could not find command interpreter, is it in your PATH?\n")
        return 127
    else:
        try:
            args = [sh, '/C', escape(string.join(args)) ]
            ret = os.spawnve(os.P_WAIT, sh, args, env)
        except OSError, e:
            ret = exitvalmap[e[0]]
            sys.stderr.write("scons: %s: %s\n" % (cmd, e[1]))
        return ret

# Windows does not allow special characters in file names
# anyway, so no need for an escape function, we will just quote
# the arg.
escape = lambda x: '"' + x + '"'

def generate(env):

    # Attempt to find cmd.exe (for WinNT/2k/XP) or
    # command.com for Win9x
    cmd_interp = ''
    # First see if we can look in the registry...
    if SCons.Util.can_read_reg:
        try:
            # Look for Windows NT system root
            k=SCons.Util.RegOpenKeyEx(SCons.Util.hkey_mod.HKEY_LOCAL_MACHINE,
                                          'Software\\Microsoft\\Windows NT\\CurrentVersion')
            val, tok = SCons.Util.RegQueryValueEx(k, 'SystemRoot')
            cmd_interp = os.path.join(val, 'System32\\cmd.exe')
        except SCons.Util.RegError:
            try:
                # Okay, try the Windows 9x system root
                k=SCons.Util.RegOpenKeyEx(SCons.Util.hkey_mod.HKEY_LOCAL_MACHINE,
                                              'Software\\Microsoft\\Windows\\CurrentVersion')
                val, tok = SCons.Util.RegQueryValueEx(k, 'SystemRoot')
                cmd_interp = os.path.join(val, 'command.com')
            except:
                pass
    if not cmd_interp:
        cmd_interp = env.Detect('cmd')
        if not cmd_interp:
            cmd_interp = env.Detect('command')
    
    if not env.has_key('ENV'):
        env['ENV']        = {}
    env['ENV']['PATHEXT'] = '.COM;.EXE;.BAT;.CMD'
    env['OBJPREFIX']      = ''
    env['OBJSUFFIX']      = '.obj'
    env['SHOBJPREFIX']    = '$OBJPREFIX'
    env['SHOBJSUFFIX']    = '$OBJSUFFIX'
    env['PROGPREFIX']     = ''
    env['PROGSUFFIX']     = '.exe'
    env['LIBPREFIX']      = ''
    env['LIBSUFFIX']      = '.lib'
    env['SHLIBPREFIX']    = ''
    env['SHLIBSUFFIX']    = '.dll'
    env['LIBPREFIXES']    = [ '$LIBPREFIX', '$SHLIBPREFIX' ]
    env['LIBSUFFIXES']    = [ '$LIBSUFFIX', '$SHLIBSUFFIX' ]
    env['SPAWN']          = spawn
    env['SHELL']          = cmd_interp
    env['ESCAPE']         = escape