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Changed module and codec names

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This commit is contained in:
Andrew Murray 2015-05-14 20:57:01 +10:00
parent 799e8312cb
commit 98fa49ea37
2 changed files with 35 additions and 27 deletions
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42
PIL/features.py
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@ -1,16 +1,19 @@
from PIL import Image from PIL import Image
modules = { modules = {
"PIL CORE": "PIL._imaging", "pil": "PIL._imaging",
"TKINTER": "PIL._imagingtk", "tkinter": "PIL._imagingtk",
"FREETYPE2": "PIL._imagingft", "freetype2": "PIL._imagingft",
"LITTLECMS2": "PIL._imagingcms", "littlecms2": "PIL._imagingcms",
"WEBP": "PIL._webp", "webp": "PIL._webp",
"Transparent WEBP": ("WEBP", "WebPDecoderBuggyAlpha") "transp_webp": ("WEBP", "WebPDecoderBuggyAlpha")
} }
def check_module(feature): def check_module(feature):
if feature not in modules:
raise ValueError("Unknown module %s" % feature)
module = modules[feature] module = modules[feature]
method_to_call = None method_to_call = None
@ -34,38 +37,31 @@ def check_module(feature):
def get_supported_modules(): def get_supported_modules():
supported_modules = [] supported_modules = []
for feature in get_all_modules(): for feature in modules:
if check_module(feature): if check_module(feature):
supported_modules.append(feature) supported_modules.append(feature)
return supported_modules return supported_modules
def get_all_modules():
# While the dictionary keys could be used here,
# a static list is used to maintain order
return ["PIL CORE", "TKINTER", "FREETYPE2",
"LITTLECMS2", "WEBP", "Transparent WEBP"]
codecs = { codecs = {
"JPEG": "jpeg", "jpg": "jpeg",
"JPEG 2000": "jpeg2k", "jpg_2000": "jpeg2k",
"ZLIB (PNG/ZIP)": "zip", "zlib": "zip",
"LIBTIFF": "libtiff" "libtiff": "libtiff"
} }
def check_codec(feature): def check_codec(feature):
if feature not in codecs:
raise ValueError("Unknown codec %s" % feature)
codec = codecs[feature] codec = codecs[feature]
return codec + "_encoder" in dir(Image.core) return codec + "_encoder" in dir(Image.core)
def get_supported_codecs(): def get_supported_codecs():
supported_codecs = [] supported_codecs = []
for feature in get_all_codecs(): for feature in codecs:
if check_codec(feature): if check_codec(feature):
supported_codecs.append(feature) supported_codecs.append(feature)
return supported_codecs return supported_codecs
def get_all_codecs():
return ["JPEG", "JPEG 2000", "ZLIB (PNG/ZIP)", "LIBTIFF"]

20
selftest.py
View File

@ -174,8 +174,15 @@ if __name__ == "__main__":
print("Python modules loaded from", os.path.dirname(Image.__file__)) print("Python modules loaded from", os.path.dirname(Image.__file__))
print("Binary modules loaded from", os.path.dirname(Image.core.__file__)) print("Binary modules loaded from", os.path.dirname(Image.core.__file__))
print("-"*68) print("-"*68)
for feature in features.get_all_modules(): for name, feature in [
supported = features.check_module(feature) ("pil", "PIL CORE"),
("tkinter", "TKINTER"),
("freetype2", "FREETYPE2"),
("littlecms2", "LITTLECMS2"),
("webp", "WEBP"),
("transp_webp", "Transparent WEBP")
]:
supported = features.check_module(name)
if supported is None: if supported is None:
# A method was being tested, but the module required # A method was being tested, but the module required
@ -185,8 +192,13 @@ if __name__ == "__main__":
print("---", feature, "support ok") print("---", feature, "support ok")
else: else:
print("***", feature, "support not installed") print("***", feature, "support not installed")
for feature in features.get_all_codecs(): for name, feature in [
if features.check_codec(feature): ("jpg", "JPEG"),
("jpg_2000", "JPEG 2000"),
("zlib", "ZLIB (PNG/ZIP)"),
("libtiff", "LIBTIFF")
]:
if features.check_codec(name):
print("---", feature, "support ok") print("---", feature, "support ok")
else: else:
print("***", feature, "support not installed") print("***", feature, "support not installed")