[game-data-packager] 06/10: Add support for extracting lha files

[Simon McVittie]

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smcv pushed a commit to branch master
in repository game-data-packager.

commit dc8e4698fb43374decfe016db5bb0680234b5491
Author: Simon McVittie <smcv at debian.org>
Date:   Sat Jan 3 20:12:40 2015 +0000

    Add support for extracting lha files
---
 lib/game_data_packager/__init__.py | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/lib/game_data_packager/__init__.py b/lib/game_data_packager/__init__.py
index 4159522..f8098b9 100644
--- a/lib/game_data_packager/__init__.py
+++ b/lib/game_data_packager/__init__.py
@@ -360,6 +360,12 @@ class GameData(object):
                 assert installable in self.files, installable
 
         for filename, wanted in self.files.items():
+            if wanted.unpack:
+                assert 'format' in wanted.unpack, filename
+                if wanted.unpack['format'] == 'lha':
+                    # for this unpacker we have to know what to pull out
+                    assert wanted.unpack['unpack'], filename
+
             if wanted.alternatives:
                 for alt in wanted.alternatives:
                     assert alt in self.files, alt
@@ -861,6 +867,19 @@ class GameData(object):
                 elif fmt == 'zip':
                     with zipfile.ZipFile(found_name, 'r') as zf:
                         self.consider_zip(found_name, zf, provider)
+                elif fmt == 'lha':
+                    logger.debug('Extracting %r from %s',
+                            provider.unpack['unpack'], found_name)
+                    tmpdir = os.path.join(self.get_workdir(), 'tmp',
+                            provider_name + '.d')
+                    mkdir_p(tmpdir)
+                    subprocess.check_call(['lha', 'xq',
+                                os.path.abspath(found_name)] +
+                            provider.unpack['unpack'],
+                            cwd=tmpdir)
+                    for f in provider.unpack['unpack']:
+                        self.consider_file(os.path.join(tmpdir, f), True)
+
             elif providable:
                 # we don't have it, but we can get it
                 possible = True

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