1# Copyright (c) 2011 Google Inc. All rights reserved.
2# Use of this source code is governed by a BSD-style license that can be
3# found in the LICENSE file.
4
5"""gypsh output module
6
7gypsh is a GYP shell.  It's not really a generator per se.  All it does is
8fire up an interactive Python session with a few local variables set to the
9variables passed to the generator.  Like gypd, it's intended as a debugging
10aid, to facilitate the exploration of .gyp structures after being processed
11by the input module.
12
13The expected usage is "gyp -f gypsh -D OS=desired_os".
14"""
15
16
17import code
18import sys
19
20
21# All of this stuff about generator variables was lovingly ripped from gypd.py.
22# That module has a much better description of what's going on and why.
23_generator_identity_variables = [
24    "EXECUTABLE_PREFIX",
25    "EXECUTABLE_SUFFIX",
26    "INTERMEDIATE_DIR",
27    "PRODUCT_DIR",
28    "RULE_INPUT_ROOT",
29    "RULE_INPUT_DIRNAME",
30    "RULE_INPUT_EXT",
31    "RULE_INPUT_NAME",
32    "RULE_INPUT_PATH",
33    "SHARED_INTERMEDIATE_DIR",
34]
35
36generator_default_variables = {}
37
38for v in _generator_identity_variables:
39    generator_default_variables[v] = "<(%s)" % v
40
41
42def GenerateOutput(target_list, target_dicts, data, params):
43    locals = {
44        "target_list": target_list,
45        "target_dicts": target_dicts,
46        "data": data,
47    }
48
49    # Use a banner that looks like the stock Python one and like what
50    # code.interact uses by default, but tack on something to indicate what
51    # locals are available, and identify gypsh.
52    banner = "Python {} on {}\nlocals.keys() = {}\ngypsh".format(
53        sys.version,
54        sys.platform,
55        repr(sorted(locals.keys())),
56    )
57
58    code.interact(banner, local=locals)
59