SconsLocal/scons-local-3.0.0/SCons/Tool/dvi.py

"""SCons.Tool.dvi

Common DVI Builder definition for various other Tool modules that use it.

"""

#
# Copyright (c) 2001 - 2017 The SCons Foundation
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# permit persons to whom the Software is furnished to do so, subject to
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# The above copyright notice and this permission notice shall be included
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__revision__ = "src/engine/SCons/Tool/dvi.py rel_3.0.0:4395:8972f6a2f699 2017/09/18 12:59:24 bdbaddog"

import SCons.Builder
import SCons.Tool

DVIBuilder = None

def generate(env):
    try:
        env['BUILDERS']['DVI']
    except KeyError:
        global DVIBuilder

        if DVIBuilder is None:
            # The suffix is hard-coded to '.dvi', not configurable via a
            # construction variable like $DVISUFFIX, because the output
            # file name is hard-coded within TeX.
            DVIBuilder = SCons.Builder.Builder(action = {},
                                               source_scanner = SCons.Tool.LaTeXScanner,
                                               suffix = '.dvi',
                                               emitter = {},
                                               source_ext_match = None)

        env['BUILDERS']['DVI'] = DVIBuilder

def exists(env):
    # This only puts a skeleton Builder in place, so if someone
    # references this Tool directly, it's always "available."
    return 1

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