1"""SCons.Tool.javah
2
3Tool-specific initialization for javah.
4
5There normally shouldn't be any need to import this module directly.
6It will usually be imported through the generic SCons.Tool.Tool()
7selection method.
8
9"""
10
11#
12# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 The SCons Foundation
13#
14# Permission is hereby granted, free of charge, to any person obtaining
15# a copy of this software and associated documentation files (the
16# "Software"), to deal in the Software without restriction, including
17# without limitation the rights to use, copy, modify, merge, publish,
18# distribute, sublicense, and/or sell copies of the Software, and to
19# permit persons to whom the Software is furnished to do so, subject to
20# the following conditions:
21#
22# The above copyright notice and this permission notice shall be included
23# in all copies or substantial portions of the Software.
24#
25# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
26# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
27# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
29# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
30# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
31# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
32#
33
34__revision__ = "src/engine/SCons/Tool/javah.py issue-2856:2676:d23b7a2f45e8 2012/08/05 15:38:28 garyo"
35
36import os.path
37
38import SCons.Action
39import SCons.Builder
40import SCons.Node.FS
41import SCons.Tool.javac
42import SCons.Util
43
44def emit_java_headers(target, source, env):
45    """Create and return lists of Java stub header files that will
46    be created from a set of class files.
47    """
48    class_suffix = env.get('JAVACLASSSUFFIX', '.class')
49    classdir = env.get('JAVACLASSDIR')
50
51    if not classdir:
52        try:
53            s = source[0]
54        except IndexError:
55            classdir = '.'
56        else:
57            try:
58                classdir = s.attributes.java_classdir
59            except AttributeError:
60                classdir = '.'
61    classdir = env.Dir(classdir).rdir()
62
63    if str(classdir) == '.':
64        c_ = None
65    else:
66        c_ = str(classdir) + os.sep
67
68    slist = []
69    for src in source:
70        try:
71            classname = src.attributes.java_classname
72        except AttributeError:
73            classname = str(src)
74            if c_ and classname[:len(c_)] == c_:
75                classname = classname[len(c_):]
76            if class_suffix and classname[-len(class_suffix):] == class_suffix:
77                classname = classname[:-len(class_suffix)]
78            classname = SCons.Tool.javac.classname(classname)
79        s = src.rfile()
80        s.attributes.java_classname = classname
81        slist.append(s)
82
83    s = source[0].rfile()
84    if not hasattr(s.attributes, 'java_classdir'):
85        s.attributes.java_classdir = classdir
86
87    if target[0].__class__ is SCons.Node.FS.File:
88        tlist = target
89    else:
90        if not isinstance(target[0], SCons.Node.FS.Dir):
91            target[0].__class__ = SCons.Node.FS.Dir
92            target[0]._morph()
93        tlist = []
94        for s in source:
95            fname = s.attributes.java_classname.replace('.', '_') + '.h'
96            t = target[0].File(fname)
97            t.attributes.java_lookupdir = target[0]
98            tlist.append(t)
99
100    return tlist, source
101
102def JavaHOutFlagGenerator(target, source, env, for_signature):
103    try:
104        t = target[0]
105    except (AttributeError, IndexError, TypeError):
106        t = target
107    try:
108        return '-d ' + str(t.attributes.java_lookupdir)
109    except AttributeError:
110        return '-o ' + str(t)
111
112def getJavaHClassPath(env,target, source, for_signature):
113    path = "${SOURCE.attributes.java_classdir}"
114    if 'JAVACLASSPATH' in env and env['JAVACLASSPATH']:
115        path = SCons.Util.AppendPath(path, env['JAVACLASSPATH'])
116    return "-classpath %s" % (path)
117
118def generate(env):
119    """Add Builders and construction variables for javah to an Environment."""
120    java_javah = SCons.Tool.CreateJavaHBuilder(env)
121    java_javah.emitter = emit_java_headers
122
123    env['_JAVAHOUTFLAG']    = JavaHOutFlagGenerator
124    env['JAVAH']            = 'javah'
125    env['JAVAHFLAGS']       = SCons.Util.CLVar('')
126    env['_JAVAHCLASSPATH']  = getJavaHClassPath
127    env['JAVAHCOM']         = '$JAVAH $JAVAHFLAGS $_JAVAHOUTFLAG $_JAVAHCLASSPATH ${SOURCES.attributes.java_classname}'
128    env['JAVACLASSSUFFIX']  = '.class'
129
130def exists(env):
131    return env.Detect('javah')
132
133# Local Variables:
134# tab-width:4
135# indent-tabs-mode:nil
136# End:
137# vim: set expandtab tabstop=4 shiftwidth=4:
138