Mercurial > genshi > genshi-test
comparison genshi/template/interpolation.py @ 902:09cc3627654c experimental-inline
Sync `experimental/inline` branch with [source:trunk@1126].
| author | cmlenz |
|---|---|
| date | Fri, 23 Apr 2010 21:08:26 +0000 |
| parents | 1837f39efd6f |
| children |
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| 830:de82830f8816 | 902:09cc3627654c |
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| 1 # -*- coding: utf-8 -*- | 1 # -*- coding: utf-8 -*- |
| 2 # | 2 # |
| 3 # Copyright (C) 2007-2008 Edgewall Software | 3 # Copyright (C) 2007-2009 Edgewall Software |
| 4 # All rights reserved. | 4 # All rights reserved. |
| 5 # | 5 # |
| 6 # This software is licensed as described in the file COPYING, which | 6 # This software is licensed as described in the file COPYING, which |
| 7 # you should have received as part of this distribution. The terms | 7 # you should have received as part of this distribution. The terms |
| 8 # are also available at http://genshi.edgewall.org/wiki/License. | 8 # are also available at http://genshi.edgewall.org/wiki/License. |
| 34 token_re = re.compile('%s|%s(?s)' % ( | 34 token_re = re.compile('%s|%s(?s)' % ( |
| 35 r'[uU]?[rR]?("""|\'\'\')((?<!\\)\\\1|.)*?\1', | 35 r'[uU]?[rR]?("""|\'\'\')((?<!\\)\\\1|.)*?\1', |
| 36 PseudoToken | 36 PseudoToken |
| 37 )) | 37 )) |
| 38 | 38 |
| 39 | |
| 39 def interpolate(text, filepath=None, lineno=-1, offset=0, lookup='strict'): | 40 def interpolate(text, filepath=None, lineno=-1, offset=0, lookup='strict'): |
| 40 """Parse the given string and extract expressions. | 41 """Parse the given string and extract expressions. |
| 41 | 42 |
| 42 This function is a generator that yields `TEXT` events for literal strings, | 43 This function is a generator that yields `TEXT` events for literal strings, |
| 43 and `EXPR` events for expressions, depending on the results of parsing the | 44 and `EXPR` events for expressions, depending on the results of parsing the |
| 44 string. | 45 string. |
| 45 | 46 |
| 46 >>> for kind, data, pos in interpolate("hey ${foo}bar"): | 47 >>> for kind, data, pos in interpolate("hey ${foo}bar"): |
| 47 ... print kind, repr(data) | 48 ... print('%s %r' % (kind, data)) |
| 48 TEXT u'hey ' | 49 TEXT 'hey ' |
| 49 EXPR Expression('foo') | 50 EXPR Expression('foo') |
| 50 TEXT u'bar' | 51 TEXT 'bar' |
| 51 | 52 |
| 52 :param text: the text to parse | 53 :param text: the text to parse |
| 53 :param filepath: absolute path to the file in which the text was found | 54 :param filepath: absolute path to the file in which the text was found |
| 54 (optional) | 55 (optional) |
| 55 :param lineno: the line number at which the text was found (optional) | 56 :param lineno: the line number at which the text was found (optional) |
| 66 textbuf = [] | 67 textbuf = [] |
| 67 textpos = None | 68 textpos = None |
| 68 for is_expr, chunk in chain(lex(text, pos, filepath), [(True, '')]): | 69 for is_expr, chunk in chain(lex(text, pos, filepath), [(True, '')]): |
| 69 if is_expr: | 70 if is_expr: |
| 70 if textbuf: | 71 if textbuf: |
| 71 yield TEXT, u''.join(textbuf), textpos | 72 yield TEXT, ''.join(textbuf), textpos |
| 72 del textbuf[:] | 73 del textbuf[:] |
| 73 textpos = None | 74 textpos = None |
| 74 if chunk: | 75 if chunk: |
| 75 try: | 76 try: |
| 76 expr = Expression(chunk.strip(), pos[0], pos[1], | 77 expr = Expression(chunk.strip(), pos[0], pos[1], |
| 88 lines = chunk.splitlines() | 89 lines = chunk.splitlines() |
| 89 pos[1] += len(lines) - 1 | 90 pos[1] += len(lines) - 1 |
| 90 pos[2] += len(lines[-1]) | 91 pos[2] += len(lines[-1]) |
| 91 else: | 92 else: |
| 92 pos[2] += len(chunk) | 93 pos[2] += len(chunk) |
| 94 | |
| 93 | 95 |
| 94 def lex(text, textpos, filepath): | 96 def lex(text, textpos, filepath): |
| 95 offset = pos = 0 | 97 offset = pos = 0 |
| 96 end = len(text) | 98 end = len(text) |
| 97 escaped = False | 99 escaped = False |