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comparison textshaper/indent.py @ 9:71fb16088d54

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add file for indentation; wth did my work go??? :(
author Jeff Hammel <k0scist@gmail.com>
date Fri, 17 Jan 2014 18:17:59 -0800
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children 466386702968
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8:22c830449604 9:71fb16088d54
1 #!/usr/bin/env python
2
3 """
4 indentation of text blocks
5 """
6
7 import optparse
8 import os
9 import sys
10
11 def indent(text, indentation=4, space=' ', strict=False):
12 """
13 indent a block of text
14
15 text -- lines of text to indent
16 indentation -- number of spaces to indent
17 space -- what to indent with
18 strict -- whether to enforce required whitespace for negative indentation
19 """
20
21 if not indentation:
22 # nothing to do
23 return text
24
25 if indentation > 0:
26 retval = [space * indentation + line for line in text]
27 else:
28 # negative indentation
29 indentation = -indentation
30 retval = []
31 for line in text:
32 prefix = line[:indentation]
33 for index, char in enumerate(prefix):
34 if not char == space:
35 if strict:
36 raise AssertionError("Found non-'%s' charcter at column %d for indentation -%d" % (space, index, indentation))
37 break
38 else:
39 index = indentation
40 retval.append(line[index:])
41
42 def main(args=sys.argv[1:]):
43
44 usage = '%prog [options]'
45 parser = optparse.OptionParser(usage=usage, description=__doc__)
46 options, args = parser.parse_args(args)
47
48
49 if __name__ == '__main__':
50 main()