Mercurial > genshi > mirror
comparison genshi/template.py @ 248:82f2bc77ad0c trunk
* Add `MANIFEST.in` so that the generated HTML documentation is included in the source distribution.
* Remove duplicate `_match` implementation.
* Allow shorthand expressions to start with an underscore.
| author | cmlenz |
|---|---|
| date | Sun, 17 Sep 2006 10:16:15 +0000 |
| parents | 71062601458a |
| children | da3a27589559 |
comparison
equal
deleted
inserted
replaced
| 247:cf4a125b44a1 | 248:82f2bc77ad0c |
|---|---|
| 781 data) and directives or expressions. | 781 data) and directives or expressions. |
| 782 """ | 782 """ |
| 783 raise NotImplementedError | 783 raise NotImplementedError |
| 784 | 784 |
| 785 _FULL_EXPR_RE = re.compile(r'(?<!\$)\$\{(.+?)\}', re.DOTALL) | 785 _FULL_EXPR_RE = re.compile(r'(?<!\$)\$\{(.+?)\}', re.DOTALL) |
| 786 _SHORT_EXPR_RE = re.compile(r'(?<!\$)\$([a-zA-Z][a-zA-Z0-9_\.]*)') | 786 _SHORT_EXPR_RE = re.compile(r'(?<!\$)\$([a-zA-Z_][a-zA-Z0-9_\.]*)') |
| 787 | 787 |
| 788 def _interpolate(cls, text, filename=None, lineno=-1, offset=-1): | 788 def _interpolate(cls, text, filename=None, lineno=-1, offset=-1): |
| 789 """Parse the given string and extract expressions. | 789 """Parse the given string and extract expressions. |
| 790 | 790 |
| 791 This method returns a list containing both literal text and `Expression` | 791 This method returns a list containing both literal text and `Expression` |
| 916 for event in self._flatten(substream, ctxt): | 916 for event in self._flatten(substream, ctxt): |
| 917 yield event | 917 yield event |
| 918 else: | 918 else: |
| 919 yield kind, data, pos | 919 yield kind, data, pos |
| 920 | 920 |
| 921 def _match(self, stream, ctxt=None, match_templates=None): | |
| 922 """Internal stream filter that applies any defined match templates | |
| 923 to the stream. | |
| 924 """ | |
| 925 if match_templates is None: | |
| 926 match_templates = ctxt._match_templates | |
| 927 nsprefix = {} # mapping of namespace prefixes to URIs | |
| 928 | |
| 929 tail = [] | |
| 930 def _strip(stream): | |
| 931 depth = 1 | |
| 932 while 1: | |
| 933 kind, data, pos = stream.next() | |
| 934 if kind is START: | |
| 935 depth += 1 | |
| 936 elif kind is END: | |
| 937 depth -= 1 | |
| 938 if depth > 0: | |
| 939 yield kind, data, pos | |
| 940 else: | |
| 941 tail[:] = [(kind, data, pos)] | |
| 942 break | |
| 943 | |
| 944 for kind, data, pos in stream: | |
| 945 | |
| 946 # We (currently) only care about start and end events for matching | |
| 947 # We might care about namespace events in the future, though | |
| 948 if not match_templates or kind not in (START, END): | |
| 949 yield kind, data, pos | |
| 950 continue | |
| 951 | |
| 952 for idx, (test, path, template, directives) in \ | |
| 953 enumerate(match_templates): | |
| 954 | |
| 955 if test(kind, data, pos, nsprefix, ctxt) is True: | |
| 956 | |
| 957 # Let the remaining match templates know about the event so | |
| 958 # they get a chance to update their internal state | |
| 959 for test in [mt[0] for mt in match_templates[idx + 1:]]: | |
| 960 test(kind, data, pos, nsprefix, ctxt) | |
| 961 | |
| 962 # Consume and store all events until an end event | |
| 963 # corresponding to this start event is encountered | |
| 964 content = [(kind, data, pos)] | |
| 965 content += list(self._match(_strip(stream), ctxt)) + tail | |
| 966 | |
| 967 kind, data, pos = tail[0] | |
| 968 for test in [mt[0] for mt in match_templates]: | |
| 969 test(kind, data, pos, nsprefix, ctxt) | |
| 970 | |
| 971 # Make the select() function available in the body of the | |
| 972 # match template | |
| 973 def select(path): | |
| 974 return Stream(content).select(path) | |
| 975 ctxt.push(dict(select=select)) | |
| 976 | |
| 977 # Recursively process the output | |
| 978 template = _apply_directives(template, ctxt, directives) | |
| 979 for event in self._match(self._eval(self._flatten(template, | |
| 980 ctxt), | |
| 981 ctxt), ctxt, | |
| 982 match_templates[:idx] + | |
| 983 match_templates[idx + 1:]): | |
| 984 yield event | |
| 985 | |
| 986 ctxt.pop() | |
| 987 break | |
| 988 | |
| 989 else: # no matches | |
| 990 yield kind, data, pos | |
| 991 | |
| 992 | 921 |
| 993 EXPR = Template.EXPR | 922 EXPR = Template.EXPR |
| 994 SUB = Template.SUB | 923 SUB = Template.SUB |
| 995 | 924 |
| 996 | 925 |