1 files changed, 177 insertions, 0 deletions
diff --git a/src/engine/SCons/SConscript.py b/src/engine/SCons/SConscript.py
new file mode 100644
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+++ b/src/engine/SCons/SConscript.py
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+"""engine.SCons.SConscript
+
+This module defines the Python API provided to SConscript and SConstruct 
+files.
+
+"""
+
+#
+# Copyright (c) 2001 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__ = "src/engine/SCons/SConscript.py __REVISION__ __DATE__ __DEVELOPER__"
+
+import SCons.Errors
+import SCons.Builder
+import SCons.Defaults
+import SCons.Node
+import SCons.Node.FS
+import SCons.Environment
+import string
+import sys
+
+default_targets = []
+help_option = None
+
+# global exports set by Export():
+global_exports = {}
+
+class Frame:
+    """A frame on the SConstruct/SConscript call stack"""
+    def __init__(self, exports):
+        self.globals = BuildDefaultGlobals()
+        self.retval = None 
+        self.prev_dir = SCons.Node.FS.default_fs.getcwd()
+        self.exports = {} # exports from the calling SConscript
+
+        try:
+            if type(exports) == type([]):
+                for export in exports:
+                    self.exports[export] = stack[-1].globals[export]
+            else:
+                for export in string.split(exports):
+                    self.exports[export] = stack[-1].globals[export]
+        except KeyError, x:
+            raise SCons.Errors.UserError, "Export of non-existant variable '%s'"%x
+
+        
+# the SConstruct/SConscript call stack:
+stack = []
+
+# For documentation on the methods in this file, see the scons man-page
+
+def Return(*vars):
+    retval = []
+    try:
+        for var in vars:
+            for v in string.split(var):
+                retval.append(stack[-1].globals[v])
+    except KeyError, x:
+        raise SCons.Errors.UserError, "Return of non-existant variable '%s'"%x
+        
+    if len(retval) == 1:
+        stack[-1].retval = retval[0]
+    else:
+        stack[-1].retval = tuple(retval)
+
+def SConscript(script, exports=[]):
+    retval = ()
+
+    # push:
+    stack.append(Frame(exports))
+
+    # call:
+    if script == "-":
+        exec sys.stdin in stack[-1].globals
+    else:
+        f = SCons.Node.FS.default_fs.File(script)
+        if f.exists():
+            file = open(str(f), "r")
+            SCons.Node.FS.default_fs.chdir(f.dir)
+            exec file in stack[-1].globals
+        else:
+            sys.stderr.write("Ignoring missing SConscript '%s'\n" % f.path)
+    
+
+    # pop:
+    frame = stack.pop()
+    SCons.Node.FS.default_fs.chdir(frame.prev_dir)
+    
+    return frame.retval
+    
+def Default(*targets):
+    for t in targets:
+        if isinstance(t, SCons.Node.Node):
+            default_targets.append(t)
+        else:
+            for s in string.split(t):
+                default_targets.append(s)
+
+def Help(text):
+    global help_option
+    if help_option == 'h':
+        print text
+        print "Use scons -H for help about command-line options."
+        sys.exit(0)
+
+def BuildDir(build_dir, src_dir):
+    SCons.Node.FS.default_fs.BuildDir(build_dir, src_dir)
+
+def GetBuildPath(files):
+    nodes = SCons.Util.scons_str2nodes(files,
+                                       SCons.Node.FS.default_fs.Entry)
+    ret = map(str, nodes)
+    if len(ret) == 1:
+        return ret[0]
+    return ret
+
+def Export(*vars):
+    try:
+        for var in vars:
+            for v in string.split(var):
+                global_exports[v] = stack[-1].globals[v]
+    except KeyError, x:
+        raise SCons.Errors.UserError, "Export of non-existant variable '%s'"%x
+
+def Import(*vars):
+    try:
+        for var in vars:
+            for v in string.split(var):
+                if stack[-1].exports.has_key(v):
+                    stack[-1].globals[v] = stack[-1].exports[v]
+                else:
+                    stack[-1].globals[v] = global_exports[v]
+    except KeyError,x:
+        raise SCons.Errors.UserError, "Import of non-existant variable '%s'"%x
+
+def BuildDefaultGlobals():
+    """
+    Create a dictionary containing all the default globals for 
+    SConscruct and SConscript files.
+    """
+
+    globals = {}
+    globals['Builder'] = SCons.Builder.Builder
+    globals['Environment'] = SCons.Environment.Environment
+    globals['Object'] = SCons.Defaults.Object
+    globals['Program'] = SCons.Defaults.Program
+    globals['Library'] = SCons.Defaults.Library
+    globals['CScan'] = SCons.Defaults.CScan
+    globals['SConscript'] = SConscript
+    globals['Default'] = Default
+    globals['Help'] = Help
+    globals['BuildDir'] = BuildDir
+    globals['GetBuildPath'] = GetBuildPath
+    globals['Export'] = Export
+    globals['Import'] = Import
+    globals['Return'] = Return
+    return globals