#!/usr/bin/env python
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__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"

"""
Test that $M4 and $M4FLAGS work as expected.
"""

import os

import TestSCons

_python_ = TestSCons._python_

test = TestSCons.TestSCons()



test.write('mym4.py', """
import sys
contents = sys.stdin.read()
sys.stdout.write(contents.replace('M4', 'mym4.py'))
sys.exit(0)
""")

test.write('SConstruct', """
DefaultEnvironment(tools=[])
env = Environment(tools=['m4'],
                  M4 = r'%(_python_)s mym4.py')
env.M4(target = 'aaa.x', source = 'aaa.x.m4')
""" % locals())

test.write('aaa.x.m4', """\
line 1
M4
line 3
""")

test.run()

import sys

if sys.platform == 'win32':
    # Handle carriage returns.
    test.must_match(test.workpath('aaa.x'), "line 1\r\nmym4.py\r\nline 3\r\n")
else:
    test.must_match(test.workpath('aaa.x'), "line 1\nmym4.py\nline 3\n")



m4 = test.where_is('m4')

if m4:

    test.file_fixture('wrapper.py')

    test.write('SConstruct', """
DefaultEnvironment(tools=[])
foo = Environment(tools=['m4'],
                  M4=r'%(m4)s', M4FLAGS='-DFFF=fff')
m4 = foo.Dictionary('M4')
bar = Environment(tools=['m4'],
                  M4 = r'%(_python_)s wrapper.py ' + m4, M4FLAGS='-DBBB=bbb')
foo.M4(target = 'foo.x', source = 'foo.x.m4')
bar.M4(target = 'bar', source = 'bar.m4')
""" % locals())

    test.write('foo.x.m4', "line 1\n"
                           "FFF\n"
                           "line 3\n")

    test.write('bar.m4', "line 1\n"
                         "BBB\n"
                         "line 3\n")

    test.run(arguments = '.')

    test.up_to_date(arguments = '.')

    test.must_match('wrapper.out', "wrapper.py\n")

    test.must_match('foo.x', "line 1\nfff\nline 3\n")

    test.must_match('bar', "line 1\nbbb\nline 3\n")

test.pass_test()

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