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@@ -1,235 +1,242 b'' | |||||
1 | # templater.py - template expansion for output |
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1 | # templater.py - template expansion for output | |
2 | # |
|
2 | # | |
3 | # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com> |
|
3 | # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com> | |
4 | # |
|
4 | # | |
5 | # This software may be used and distributed according to the terms of the |
|
5 | # This software may be used and distributed according to the terms of the | |
6 | # GNU General Public License version 2, incorporated herein by reference. |
|
6 | # GNU General Public License version 2, incorporated herein by reference. | |
7 |
|
7 | |||
8 | from i18n import _ |
|
8 | from i18n import _ | |
9 | import re, sys, os |
|
9 | import re, sys, os | |
10 | import util, config, templatefilters |
|
10 | import util, config, templatefilters | |
11 |
|
11 | |||
12 | path = ['templates', '../templates'] |
|
12 | path = ['templates', '../templates'] | |
13 | stringify = templatefilters.stringify |
|
13 | stringify = templatefilters.stringify | |
14 |
|
14 | |||
15 | def parsestring(s, quoted=True): |
|
15 | def parsestring(s, quoted=True): | |
16 | '''parse a string using simple c-like syntax. |
|
16 | '''parse a string using simple c-like syntax. | |
17 | string must be in quotes if quoted is True.''' |
|
17 | string must be in quotes if quoted is True.''' | |
18 | if quoted: |
|
18 | if quoted: | |
19 | if len(s) < 2 or s[0] != s[-1]: |
|
19 | if len(s) < 2 or s[0] != s[-1]: | |
20 | raise SyntaxError(_('unmatched quotes')) |
|
20 | raise SyntaxError(_('unmatched quotes')) | |
21 | return s[1:-1].decode('string_escape') |
|
21 | return s[1:-1].decode('string_escape') | |
22 |
|
22 | |||
23 | return s.decode('string_escape') |
|
23 | return s.decode('string_escape') | |
24 |
|
24 | |||
25 | class engine(object): |
|
25 | class engine(object): | |
26 | '''template expansion engine. |
|
26 | '''template expansion engine. | |
27 |
|
27 | |||
28 | template expansion works like this. a map file contains key=value |
|
28 | template expansion works like this. a map file contains key=value | |
29 | pairs. if value is quoted, it is treated as string. otherwise, it |
|
29 | pairs. if value is quoted, it is treated as string. otherwise, it | |
30 | is treated as name of template file. |
|
30 | is treated as name of template file. | |
31 |
|
31 | |||
32 | templater is asked to expand a key in map. it looks up key, and |
|
32 | templater is asked to expand a key in map. it looks up key, and | |
33 | looks for strings like this: {foo}. it expands {foo} by looking up |
|
33 | looks for strings like this: {foo}. it expands {foo} by looking up | |
34 | foo in map, and substituting it. expansion is recursive: it stops |
|
34 | foo in map, and substituting it. expansion is recursive: it stops | |
35 | when there is no more {foo} to replace. |
|
35 | when there is no more {foo} to replace. | |
36 |
|
36 | |||
37 | expansion also allows formatting and filtering. |
|
37 | expansion also allows formatting and filtering. | |
38 |
|
38 | |||
39 | format uses key to expand each item in list. syntax is |
|
39 | format uses key to expand each item in list. syntax is | |
40 | {key%format}. |
|
40 | {key%format}. | |
41 |
|
41 | |||
42 | filter uses function to transform value. syntax is |
|
42 | filter uses function to transform value. syntax is | |
43 | {key|filter1|filter2|...}.''' |
|
43 | {key|filter1|filter2|...}.''' | |
44 |
|
44 | |||
45 | template_re = re.compile(r'{([\w\|%]+)}|#([\w\|%]+)#') |
|
45 | template_re = re.compile(r'{([\w\|%]+)}|#([\w\|%]+)#') | |
46 |
|
46 | |||
47 | def __init__(self, loader, filters={}, defaults={}): |
|
47 | def __init__(self, loader, filters={}, defaults={}): | |
48 | self.loader = loader |
|
48 | self.loader = loader | |
49 | self.filters = filters |
|
49 | self.filters = filters | |
50 | self.defaults = defaults |
|
50 | self.defaults = defaults | |
|
51 | self.cache = {} | |||
51 |
|
52 | |||
52 | def process(self, t, map): |
|
53 | def process(self, t, map): | |
53 | '''Perform expansion. t is name of map element to expand. map contains |
|
54 | '''Perform expansion. t is name of map element to expand. map contains | |
54 | added elements for use during expansion. Is a generator.''' |
|
55 | added elements for use during expansion. Is a generator.''' | |
55 | tmpl = self.loader(t) |
|
56 | tmpl = self.loader(t) | |
56 | iters = [self._process(tmpl, map)] |
|
57 | iters = [self._process(tmpl, map)] | |
57 | while iters: |
|
58 | while iters: | |
58 | try: |
|
59 | try: | |
59 | item = iters[0].next() |
|
60 | item = iters[0].next() | |
60 | except StopIteration: |
|
61 | except StopIteration: | |
61 | iters.pop(0) |
|
62 | iters.pop(0) | |
62 | continue |
|
63 | continue | |
63 | if isinstance(item, str): |
|
64 | if isinstance(item, str): | |
64 | yield item |
|
65 | yield item | |
65 | elif item is None: |
|
66 | elif item is None: | |
66 | yield '' |
|
67 | yield '' | |
67 | elif hasattr(item, '__iter__'): |
|
68 | elif hasattr(item, '__iter__'): | |
68 | iters.insert(0, iter(item)) |
|
69 | iters.insert(0, iter(item)) | |
69 | else: |
|
70 | else: | |
70 | yield str(item) |
|
71 | yield str(item) | |
71 |
|
72 | |||
72 | def _format(self, expr, get, map): |
|
73 | def _format(self, expr, get, map): | |
73 | key, format = expr.split('%') |
|
74 | key, format = expr.split('%') | |
74 | v = get(key) |
|
75 | v = get(key) | |
75 | if not hasattr(v, '__iter__'): |
|
76 | if not hasattr(v, '__iter__'): | |
76 | raise SyntaxError(_("Error expanding '%s%%%s'") % (key, format)) |
|
77 | raise SyntaxError(_("Error expanding '%s%%%s'") % (key, format)) | |
77 | lm = map.copy() |
|
78 | lm = map.copy() | |
78 | for i in v: |
|
79 | for i in v: | |
79 | lm.update(i) |
|
80 | lm.update(i) | |
80 | yield self.process(format, lm) |
|
81 | yield self.process(format, lm) | |
81 |
|
82 | |||
82 | def _filter(self, expr, get, map): |
|
83 | def _filter(self, expr, get, map): | |
83 | parts = expr.split('|') |
|
84 | if expr not in self.cache: | |
84 | v = get(parts[0]) |
|
85 | parts = expr.split('|') | |
85 |
|
|
86 | filters = parts[1:] | |
86 |
|
|
87 | for f in filters: | |
87 | return v |
|
88 | if f not in self.filters: | |
|
89 | raise SyntaxError(_("unknown filter '%s'") % expr) | |||
|
90 | calls = '('.join(i for i in reversed(filters)) | |||
|
91 | end = ')' * len(filters) | |||
|
92 | code = "lambda _get: %s(_get('%s')%s" % (calls, parts[0], end) | |||
|
93 | self.cache[expr] = eval(code, self.filters) | |||
|
94 | return self.cache[expr](get) | |||
88 |
|
95 | |||
89 | def _process(self, tmpl, map): |
|
96 | def _process(self, tmpl, map): | |
90 | '''Render a template. Returns a generator.''' |
|
97 | '''Render a template. Returns a generator.''' | |
91 |
|
98 | |||
92 | def get(key): |
|
99 | def get(key): | |
93 | v = map.get(key) |
|
100 | v = map.get(key) | |
94 | if v is None: |
|
101 | if v is None: | |
95 | v = self.defaults.get(key, '') |
|
102 | v = self.defaults.get(key, '') | |
96 | if hasattr(v, '__call__'): |
|
103 | if hasattr(v, '__call__'): | |
97 | v = v(**map) |
|
104 | v = v(**map) | |
98 | return v |
|
105 | return v | |
99 |
|
106 | |||
100 | while tmpl: |
|
107 | while tmpl: | |
101 | m = self.template_re.search(tmpl) |
|
108 | m = self.template_re.search(tmpl) | |
102 | if not m: |
|
109 | if not m: | |
103 | yield tmpl |
|
110 | yield tmpl | |
104 | break |
|
111 | break | |
105 |
|
112 | |||
106 | start, end = m.span(0) |
|
113 | start, end = m.span(0) | |
107 | variants = m.groups() |
|
114 | variants = m.groups() | |
108 | expr = variants[0] or variants[1] |
|
115 | expr = variants[0] or variants[1] | |
109 |
|
116 | |||
110 | if start: |
|
117 | if start: | |
111 | yield tmpl[:start] |
|
118 | yield tmpl[:start] | |
112 | tmpl = tmpl[end:] |
|
119 | tmpl = tmpl[end:] | |
113 |
|
120 | |||
114 | if '%' in expr: |
|
121 | if '%' in expr: | |
115 | yield self._format(expr, get, map) |
|
122 | yield self._format(expr, get, map) | |
116 | elif '|' in expr: |
|
123 | elif '|' in expr: | |
117 | yield self._filter(expr, get, map) |
|
124 | yield self._filter(expr, get, map) | |
118 | else: |
|
125 | else: | |
119 | yield get(expr) |
|
126 | yield get(expr) | |
120 |
|
127 | |||
121 | engines = {'default': engine} |
|
128 | engines = {'default': engine} | |
122 |
|
129 | |||
123 | class templater(object): |
|
130 | class templater(object): | |
124 |
|
131 | |||
125 | def __init__(self, mapfile, filters={}, defaults={}, cache={}, |
|
132 | def __init__(self, mapfile, filters={}, defaults={}, cache={}, | |
126 | minchunk=1024, maxchunk=65536): |
|
133 | minchunk=1024, maxchunk=65536): | |
127 | '''set up template engine. |
|
134 | '''set up template engine. | |
128 | mapfile is name of file to read map definitions from. |
|
135 | mapfile is name of file to read map definitions from. | |
129 | filters is dict of functions. each transforms a value into another. |
|
136 | filters is dict of functions. each transforms a value into another. | |
130 | defaults is dict of default map definitions.''' |
|
137 | defaults is dict of default map definitions.''' | |
131 | self.mapfile = mapfile or 'template' |
|
138 | self.mapfile = mapfile or 'template' | |
132 | self.cache = cache.copy() |
|
139 | self.cache = cache.copy() | |
133 | self.map = {} |
|
140 | self.map = {} | |
134 | self.base = (mapfile and os.path.dirname(mapfile)) or '' |
|
141 | self.base = (mapfile and os.path.dirname(mapfile)) or '' | |
135 | self.filters = templatefilters.filters.copy() |
|
142 | self.filters = templatefilters.filters.copy() | |
136 | self.filters.update(filters) |
|
143 | self.filters.update(filters) | |
137 | self.defaults = defaults |
|
144 | self.defaults = defaults | |
138 | self.minchunk, self.maxchunk = minchunk, maxchunk |
|
145 | self.minchunk, self.maxchunk = minchunk, maxchunk | |
139 | self.engines = {} |
|
146 | self.engines = {} | |
140 |
|
147 | |||
141 | if not mapfile: |
|
148 | if not mapfile: | |
142 | return |
|
149 | return | |
143 | if not os.path.exists(mapfile): |
|
150 | if not os.path.exists(mapfile): | |
144 | raise util.Abort(_('style not found: %s') % mapfile) |
|
151 | raise util.Abort(_('style not found: %s') % mapfile) | |
145 |
|
152 | |||
146 | conf = config.config() |
|
153 | conf = config.config() | |
147 | conf.read(mapfile) |
|
154 | conf.read(mapfile) | |
148 |
|
155 | |||
149 | for key, val in conf[''].items(): |
|
156 | for key, val in conf[''].items(): | |
150 | if val[0] in "'\"": |
|
157 | if val[0] in "'\"": | |
151 | try: |
|
158 | try: | |
152 | self.cache[key] = parsestring(val) |
|
159 | self.cache[key] = parsestring(val) | |
153 | except SyntaxError, inst: |
|
160 | except SyntaxError, inst: | |
154 | raise SyntaxError('%s: %s' % |
|
161 | raise SyntaxError('%s: %s' % | |
155 | (conf.source('', key), inst.args[0])) |
|
162 | (conf.source('', key), inst.args[0])) | |
156 | else: |
|
163 | else: | |
157 | val = 'default', val |
|
164 | val = 'default', val | |
158 | if ':' in val[1]: |
|
165 | if ':' in val[1]: | |
159 | val = val[1].split(':', 1) |
|
166 | val = val[1].split(':', 1) | |
160 | self.map[key] = val[0], os.path.join(self.base, val[1]) |
|
167 | self.map[key] = val[0], os.path.join(self.base, val[1]) | |
161 |
|
168 | |||
162 | def __contains__(self, key): |
|
169 | def __contains__(self, key): | |
163 | return key in self.cache or key in self.map |
|
170 | return key in self.cache or key in self.map | |
164 |
|
171 | |||
165 | def load(self, t): |
|
172 | def load(self, t): | |
166 | '''Get the template for the given template name. Use a local cache.''' |
|
173 | '''Get the template for the given template name. Use a local cache.''' | |
167 | if not t in self.cache: |
|
174 | if not t in self.cache: | |
168 | try: |
|
175 | try: | |
169 | self.cache[t] = open(self.map[t][1]).read() |
|
176 | self.cache[t] = open(self.map[t][1]).read() | |
170 | except IOError, inst: |
|
177 | except IOError, inst: | |
171 | raise IOError(inst.args[0], _('template file %s: %s') % |
|
178 | raise IOError(inst.args[0], _('template file %s: %s') % | |
172 | (self.map[t][1], inst.args[1])) |
|
179 | (self.map[t][1], inst.args[1])) | |
173 | return self.cache[t] |
|
180 | return self.cache[t] | |
174 |
|
181 | |||
175 | def __call__(self, t, **map): |
|
182 | def __call__(self, t, **map): | |
176 | ttype = t in self.map and self.map[t][0] or 'default' |
|
183 | ttype = t in self.map and self.map[t][0] or 'default' | |
177 | proc = self.engines.get(ttype) |
|
184 | proc = self.engines.get(ttype) | |
178 | if proc is None: |
|
185 | if proc is None: | |
179 | proc = engines[ttype](self.load, self.filters, self.defaults) |
|
186 | proc = engines[ttype](self.load, self.filters, self.defaults) | |
180 | self.engines[ttype] = proc |
|
187 | self.engines[ttype] = proc | |
181 |
|
188 | |||
182 | stream = proc.process(t, map) |
|
189 | stream = proc.process(t, map) | |
183 | if self.minchunk: |
|
190 | if self.minchunk: | |
184 | stream = util.increasingchunks(stream, min=self.minchunk, |
|
191 | stream = util.increasingchunks(stream, min=self.minchunk, | |
185 | max=self.maxchunk) |
|
192 | max=self.maxchunk) | |
186 | return stream |
|
193 | return stream | |
187 |
|
194 | |||
188 | def templatepath(name=None): |
|
195 | def templatepath(name=None): | |
189 | '''return location of template file or directory (if no name). |
|
196 | '''return location of template file or directory (if no name). | |
190 | returns None if not found.''' |
|
197 | returns None if not found.''' | |
191 | normpaths = [] |
|
198 | normpaths = [] | |
192 |
|
199 | |||
193 | # executable version (py2exe) doesn't support __file__ |
|
200 | # executable version (py2exe) doesn't support __file__ | |
194 | if hasattr(sys, 'frozen'): |
|
201 | if hasattr(sys, 'frozen'): | |
195 | module = sys.executable |
|
202 | module = sys.executable | |
196 | else: |
|
203 | else: | |
197 | module = __file__ |
|
204 | module = __file__ | |
198 | for f in path: |
|
205 | for f in path: | |
199 | if f.startswith('/'): |
|
206 | if f.startswith('/'): | |
200 | p = f |
|
207 | p = f | |
201 | else: |
|
208 | else: | |
202 | fl = f.split('/') |
|
209 | fl = f.split('/') | |
203 | p = os.path.join(os.path.dirname(module), *fl) |
|
210 | p = os.path.join(os.path.dirname(module), *fl) | |
204 | if name: |
|
211 | if name: | |
205 | p = os.path.join(p, name) |
|
212 | p = os.path.join(p, name) | |
206 | if name and os.path.exists(p): |
|
213 | if name and os.path.exists(p): | |
207 | return os.path.normpath(p) |
|
214 | return os.path.normpath(p) | |
208 | elif os.path.isdir(p): |
|
215 | elif os.path.isdir(p): | |
209 | normpaths.append(os.path.normpath(p)) |
|
216 | normpaths.append(os.path.normpath(p)) | |
210 |
|
217 | |||
211 | return normpaths |
|
218 | return normpaths | |
212 |
|
219 | |||
213 | def stylemap(style, paths=None): |
|
220 | def stylemap(style, paths=None): | |
214 | """Return path to mapfile for a given style. |
|
221 | """Return path to mapfile for a given style. | |
215 |
|
222 | |||
216 | Searches mapfile in the following locations: |
|
223 | Searches mapfile in the following locations: | |
217 | 1. templatepath/style/map |
|
224 | 1. templatepath/style/map | |
218 | 2. templatepath/map-style |
|
225 | 2. templatepath/map-style | |
219 | 3. templatepath/map |
|
226 | 3. templatepath/map | |
220 | """ |
|
227 | """ | |
221 |
|
228 | |||
222 | if paths is None: |
|
229 | if paths is None: | |
223 | paths = templatepath() |
|
230 | paths = templatepath() | |
224 | elif isinstance(paths, str): |
|
231 | elif isinstance(paths, str): | |
225 | paths = [paths] |
|
232 | paths = [paths] | |
226 |
|
233 | |||
227 | locations = style and [os.path.join(style, "map"), "map-" + style] or [] |
|
234 | locations = style and [os.path.join(style, "map"), "map-" + style] or [] | |
228 | locations.append("map") |
|
235 | locations.append("map") | |
229 | for path in paths: |
|
236 | for path in paths: | |
230 | for location in locations: |
|
237 | for location in locations: | |
231 | mapfile = os.path.join(path, location) |
|
238 | mapfile = os.path.join(path, location) | |
232 | if os.path.isfile(mapfile): |
|
239 | if os.path.isfile(mapfile): | |
233 | return mapfile |
|
240 | return mapfile | |
234 |
|
241 | |||
235 | raise RuntimeError("No hgweb templates found in %r" % paths) |
|
242 | raise RuntimeError("No hgweb templates found in %r" % paths) |
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