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parser.py: parse_color() now case-insensitive. parse_image() test for .svg 

extension now case-insenstive. Doc updates.
This commit is contained in:
bionoid 2011-10-04 11:51:59 +02:00
parent 7c87c8dbd4
commit 911273e675
1 changed files with 18 additions and 16 deletions
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34
kivy/parser.py
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@ -2,7 +2,7 @@
Parser utilities
================
Used specially for CSS
Helper functions used for CSS
'''
__all__ = ('parse_image', 'parse_color', 'parse_int', 'parse_float',
@ -17,9 +17,9 @@ from kivy.core.svg import Svg
def parse_filename(filename):
'''Parse a filename, and search inside resource if exist.
If we haven't found it, just return the name.
'''
'''Parse a filename and search for it using `resource_find()`.
If found, the resource path is returned, otherwise return the unmodified
filename (as specified by the caller).'''
filename = parse_string(filename)
result = resource_find(filename)
if result is None:
@ -28,11 +28,12 @@ def parse_filename(filename):
def parse_image(filename):
'''Parse a filename to load an image ro svg'''
'''Parse a filename and load it in a Widget (Image or Svg).
Svg is used only if the file extension is '.svg', otherwise Image.'''
filename = parse_filename(filename)
if filename in (None, 'None', u'None'):
return None
if filename.endswith('.svg'):
if filename.lower().endswith('.svg'):
return Svg(filename)
else:
return Image(filename)
@ -41,7 +42,7 @@ def parse_image(filename):
def parse_color(text):
'''Parse a text color to a kivy color. Format supported are :
'''Parse a string to a kivy color. Supported formats :
* rgb(r, g, b)
* rgba(r, g, b, a)
* #aaa
@ -58,14 +59,15 @@ def parse_color(text):
if len(res) == 3:
res = ''.join(map(lambda x: x+x, res))
value = [int(x, 16) / 255. for x in re.split(
'([0-9a-f]{2})', res) if x != '']
'(?i)([0-9a-f]{2})', res) if x != '']
if len(value) == 3:
value.append(1.)
return value
def parse_bool(text):
'''Parse a string to a boolean'''
'''Parse a string to a boolean, ignoring case. "true"/"1" is True, "false"/"0"
is False. Anything else throws an exception.'''
if text.lower() in ('true', '1'):
return True
elif text.lower() in ('false', '0'):
@ -74,14 +76,14 @@ def parse_bool(text):
def parse_string(text):
'''Parse a string to a string (remove quotes and double-quotes)'''
'''Parse a string to a string (remove single and double quotes)'''
if len(text) >= 2 and text[0] in ('"', "'") and text[-1] in ('"', "'"):
text = text[1:-1]
return text.strip()
def parse_int2(text):
'''Parse a string to a integer with exactly 2 number
'''Parse a string to a list of exactly 2 integers
>>> print parse_int2("12 54")
12, 54
@ -90,16 +92,16 @@ def parse_int2(text):
texts = [x for x in text.split(' ') if x.strip() != '']
value = map(parse_int, texts)
if len(value) < 1:
raise Exception('Invalid format int2 for %s' % text)
raise Exception('Invalid int2 format: %s' % text)
elif len(value) == 1:
return [value[0], value[0]]
elif len(value) > 2:
raise Exception('Too much value in %s : %s' % (text, str(value)))
raise Exception('Too many values in %s: %s' % (text, str(value)))
return value
def parse_float4(text):
'''Parse a string to a float with exactly 4 floats
'''Parse a string to a list of exactly 4 floats
>>> parse_float4('54 87. 35 0')
54, 87., 35, 0
@ -108,7 +110,7 @@ def parse_float4(text):
texts = [x for x in text.split(' ') if x.strip() != '']
value = map(parse_float, texts)
if len(value) < 1:
raise Exception('Invalid format float4 for %s' % text)
raise Exception('Invalid float4 format: %s' % text)
elif len(value) == 1:
return map(lambda x: value[0], range(4))
elif len(value) == 2:
@ -117,7 +119,7 @@ def parse_float4(text):
# ambigous case!
return [value[0], value[1], value[0], value[2]]
elif len(value) > 4:
raise Exception('Too much value in %s' % text)
raise Exception('Too many values in %s' % text)
return value
parse_int = int