1. Georg Brandl
  2. sphinx

Source

sphinx / sphinx / builders / html.py

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
# -*- coding: utf-8 -*-
"""
    sphinx.builders.html
    ~~~~~~~~~~~~~~~~~~~~

    Several HTML builders.

    :copyright: 2007-2008 by Georg Brandl, Armin Ronacher.
    :license: BSD, see LICENSE for details.
"""

import os
import codecs
import shutil
import cPickle as pickle
from os import path

from docutils.io import DocTreeInput, StringOutput
from docutils.core import publish_parts
from docutils.utils import new_document
from docutils.frontend import OptionParser
from docutils.readers.doctree import Reader as DoctreeReader

from sphinx import package_dir, __version__
from sphinx.util import SEP, os_path, relative_uri, ensuredir, ustrftime
from sphinx.search import js_index
from sphinx.builders import Builder, ENV_PICKLE_FILENAME
from sphinx.highlighting import PygmentsBridge
from sphinx.util.console import bold
from sphinx.writers.html import HTMLWriter, HTMLTranslator, SmartyPantsHTMLTranslator

try:
    import json
except ImportError:
    try:
        import simplejson as json
    except ImportError:
        json = None


INVENTORY_FILENAME = 'objects.inv'
LAST_BUILD_FILENAME = 'last_build'


class StandaloneHTMLBuilder(Builder):
    """
    Builds standalone HTML docs.
    """
    name = 'html'
    copysource = True
    out_suffix = '.html'
    link_suffix = '.html'  # defaults to matching out_suffix
    indexer_format = js_index
    supported_image_types = ['image/svg+xml', 'image/png', 'image/gif',
                             'image/jpeg']
    searchindex_filename = 'searchindex.js'
    add_permalinks = True

    # This is a class attribute because it is mutated by Sphinx.add_javascript.
    script_files = ['_static/jquery.js', '_static/doctools.js']

    def init(self):
        """Load templates."""
        self.init_templates()
        self.init_translator_class()
        if self.config.html_file_suffix:
            self.out_suffix = self.config.html_file_suffix

        if self.config.html_link_suffix is not None:
            self.link_suffix = self.config.html_link_suffix
        else:
            self.link_suffix = self.out_suffix

        if self.config.language is not None:
            jsfile = path.join(package_dir, 'locale', self.config.language,
                               'LC_MESSAGES', 'sphinx.js')
            if path.isfile(jsfile):
                self.script_files.append('_static/translations.js')

    def init_translator_class(self):
        if self.config.html_translator_class:
            self.translator_class = self.app.import_object(
                self.config.html_translator_class, 'html_translator_class setting')
        elif self.config.html_use_smartypants:
            self.translator_class = SmartyPantsHTMLTranslator
        else:
            self.translator_class = HTMLTranslator

    def render_partial(self, node):
        """Utility: Render a lone doctree node."""
        doc = new_document('<partial node>')
        doc.append(node)
        return publish_parts(
            doc,
            source_class=DocTreeInput,
            reader=DoctreeReader(),
            writer=HTMLWriter(self),
            settings_overrides={'output_encoding': 'unicode'}
        )

    def prepare_writing(self, docnames):
        from sphinx.search import IndexBuilder

        self.indexer = IndexBuilder(self.env)
        self.load_indexer(docnames)
        self.docwriter = HTMLWriter(self)
        self.docsettings = OptionParser(
            defaults=self.env.settings,
            components=(self.docwriter,)).get_default_values()

        # format the "last updated on" string, only once is enough since it
        # typically doesn't include the time of day
        lufmt = self.config.html_last_updated_fmt
        if lufmt is not None:
            self.last_updated = ustrftime(lufmt or _('%b %d, %Y'))
        else:
            self.last_updated = None

        logo = self.config.html_logo and \
               path.basename(self.config.html_logo) or ''

        favicon = self.config.html_favicon and \
                  path.basename(self.config.html_favicon) or ''
        if favicon and os.path.splitext(favicon)[1] != '.ico':
            self.warn('html_favicon is not an .ico file')

        if not isinstance(self.config.html_use_opensearch, basestring):
            self.warn('html_use_opensearch config value must now be a string')

        self.relations = self.env.collect_relations()

        rellinks = []
        if self.config.html_use_index:
            rellinks.append(('genindex', _('General Index'), 'I', _('index')))
        if self.config.html_use_modindex and self.env.modules:
            rellinks.append(('modindex', _('Global Module Index'), 'M', _('modules')))

        self.globalcontext = dict(
            project = self.config.project,
            release = self.config.release,
            version = self.config.version,
            last_updated = self.last_updated,
            copyright = self.config.copyright,
            master_doc = self.config.master_doc,
            style = self.config.html_style,
            use_opensearch = self.config.html_use_opensearch,
            docstitle = self.config.html_title,
            shorttitle = self.config.html_short_title,
            show_sphinx = self.config.html_show_sphinx,
            has_source = self.config.html_copy_source,
            show_source = self.config.html_show_sourcelink,
            file_suffix = self.out_suffix,
            script_files = self.script_files,
            sphinx_version = __version__,
            rellinks = rellinks,
            builder = self.name,
            parents = [],
            logo = logo,
            favicon = favicon,
        )
        self.globalcontext.update(self.config.html_context)

    def get_doc_context(self, docname, body, metatags):
        """Collect items for the template context of a page."""
        # find out relations
        prev = next = None
        parents = []
        rellinks = self.globalcontext['rellinks'][:]
        related = self.relations.get(docname)
        titles = self.env.titles
        if related and related[2]:
            try:
                next = {'link': self.get_relative_uri(docname, related[2]),
                        'title': self.render_partial(titles[related[2]])['title']}
                rellinks.append((related[2], next['title'], 'N', _('next')))
            except KeyError:
                next = None
        if related and related[1]:
            try:
                prev = {'link': self.get_relative_uri(docname, related[1]),
                        'title': self.render_partial(titles[related[1]])['title']}
                rellinks.append((related[1], prev['title'], 'P', _('previous')))
            except KeyError:
                # the relation is (somehow) not in the TOC tree, handle that gracefully
                prev = None
        while related and related[0]:
            try:
                parents.append(
                    {'link': self.get_relative_uri(docname, related[0]),
                     'title': self.render_partial(titles[related[0]])['title']})
            except KeyError:
                pass
            related = self.relations.get(related[0])
        if parents:
            parents.pop() # remove link to the master file; we have a generic
                          # "back to index" link already
        parents.reverse()

        # title rendered as HTML
        title = titles.get(docname)
        title = title and self.render_partial(title)['title'] or ''
        # the name for the copied source
        sourcename = self.config.html_copy_source and docname + '.txt' or ''

        # metadata for the document
        meta = self.env.metadata.get(docname)

        return dict(
            parents = parents,
            prev = prev,
            next = next,
            title = title,
            meta = meta,
            body = body,
            metatags = metatags,
            rellinks = rellinks,
            sourcename = sourcename,
            toc = self.render_partial(self.env.get_toc_for(docname))['fragment'],
            # only display a TOC if there's more than one item to show
            display_toc = (self.env.toc_num_entries[docname] > 1),
        )

    def write_doc(self, docname, doctree):
        self.post_process_images(doctree)
        destination = StringOutput(encoding='utf-8')
        doctree.settings = self.docsettings

        self.imgpath = relative_uri(self.get_target_uri(docname), '_images')
        self.dlpath = relative_uri(self.get_target_uri(docname), '_downloads')
        self.docwriter.write(doctree, destination)
        self.docwriter.assemble_parts()
        body = self.docwriter.parts['fragment']
        metatags = self.docwriter.clean_meta

        ctx = self.get_doc_context(docname, body, metatags)
        self.index_page(docname, doctree, ctx.get('title', ''))
        self.handle_page(docname, ctx, event_arg=doctree)

    def finish(self):
        self.info(bold('writing additional files...'), nonl=1)

        # the global general index

        if self.config.html_use_index:
            # the total count of lines for each index letter, used to distribute
            # the entries into two columns
            genindex = self.env.create_index(self)
            indexcounts = []
            for _, entries in genindex:
                indexcounts.append(sum(1 + len(subitems)
                                       for _, (_, subitems) in entries))

            genindexcontext = dict(
                genindexentries = genindex,
                genindexcounts = indexcounts,
                split_index = self.config.html_split_index,
            )
            self.info(' genindex', nonl=1)

            if self.config.html_split_index:
                self.handle_page('genindex', genindexcontext, 'genindex-split.html')
                self.handle_page('genindex-all', genindexcontext, 'genindex.html')
                for (key, entries), count in zip(genindex, indexcounts):
                    ctx = {'key': key, 'entries': entries, 'count': count,
                           'genindexentries': genindex}
                    self.handle_page('genindex-' + key, ctx, 'genindex-single.html')
            else:
                self.handle_page('genindex', genindexcontext, 'genindex.html')

        # the global module index

        if self.config.html_use_modindex and self.env.modules:
            # the sorted list of all modules, for the global module index
            modules = sorted(((mn, (self.get_relative_uri('modindex', fn) +
                                    '#module-' + mn, sy, pl, dep))
                              for (mn, (fn, sy, pl, dep)) in
                              self.env.modules.iteritems()),
                             key=lambda x: x[0].lower())
            # collect all platforms
            platforms = set()
            # sort out collapsable modules
            modindexentries = []
            letters = []
            pmn = ''
            num_toplevels = 0
            num_collapsables = 0
            cg = 0 # collapse group
            fl = '' # first letter
            for mn, (fn, sy, pl, dep) in modules:
                pl = pl and pl.split(', ') or []
                platforms.update(pl)
                if fl != mn[0].lower() and mn[0] != '_':
                    # heading
                    modindexentries.append(['', False, 0, False,
                                            mn[0].upper(), '', [], False])
                    letters.append(mn[0].upper())
                tn = mn.split('.')[0]
                if tn != mn:
                    # submodule
                    if pmn == tn:
                        # first submodule - make parent collapsable
                        modindexentries[-1][1] = True
                        num_collapsables += 1
                    elif not pmn.startswith(tn):
                        # submodule without parent in list, add dummy entry
                        cg += 1
                        modindexentries.append([tn, True, cg, False, '', '', [], False])
                else:
                    num_toplevels += 1
                    cg += 1
                modindexentries.append([mn, False, cg, (tn != mn), fn, sy, pl, dep])
                pmn = mn
                fl = mn[0].lower()
            platforms = sorted(platforms)

            # apply heuristics when to collapse modindex at page load:
            # only collapse if number of toplevel modules is larger than
            # number of submodules
            collapse = len(modules) - num_toplevels < num_toplevels

            modindexcontext = dict(
                modindexentries = modindexentries,
                platforms = platforms,
                letters = letters,
                collapse_modindex = collapse,
            )
            self.info(' modindex', nonl=1)
            self.handle_page('modindex', modindexcontext, 'modindex.html')

        # the search page
        if self.name != 'htmlhelp':
            self.info(' search', nonl=1)
            self.handle_page('search', {}, 'search.html')

        # additional pages from conf.py
        for pagename, template in self.config.html_additional_pages.items():
            self.info(' '+pagename, nonl=1)
            self.handle_page(pagename, {}, template)

        if self.config.html_use_opensearch and self.name != 'htmlhelp':
            self.info(' opensearch', nonl=1)
            fn = path.join(self.outdir, '_static', 'opensearch.xml')
            self.handle_page('opensearch', {}, 'opensearch.xml', outfilename=fn)

        self.info()

        # copy image files
        if self.images:
            self.info(bold('copying images...'), nonl=True)
            ensuredir(path.join(self.outdir, '_images'))
            for src, dest in self.images.iteritems():
                self.info(' '+src, nonl=1)
                shutil.copyfile(path.join(self.srcdir, src),
                                path.join(self.outdir, '_images', dest))
            self.info()

        # copy downloadable files
        if self.env.dlfiles:
            self.info(bold('copying downloadable files...'), nonl=True)
            ensuredir(path.join(self.outdir, '_downloads'))
            for src, (_, dest) in self.env.dlfiles.iteritems():
                self.info(' '+src, nonl=1)
                shutil.copyfile(path.join(self.srcdir, src),
                                path.join(self.outdir, '_downloads', dest))
            self.info()

        # copy static files
        self.info(bold('copying static files... '), nonl=True)
        ensuredir(path.join(self.outdir, '_static'))
        # first, create pygments style file
        f = open(path.join(self.outdir, '_static', 'pygments.css'), 'w')
        f.write(PygmentsBridge('html', self.config.pygments_style).get_stylesheet())
        f.close()
        # then, copy translations JavaScript file
        if self.config.language is not None:
            jsfile = path.join(package_dir, 'locale', self.config.language,
                               'LC_MESSAGES', 'sphinx.js')
            if path.isfile(jsfile):
                shutil.copyfile(jsfile, path.join(self.outdir, '_static',
                                                  'translations.js'))
        # then, copy over all user-supplied static files
        staticdirnames = [path.join(package_dir, 'static')] + \
                         [path.join(self.confdir, spath)
                          for spath in self.config.html_static_path]
        for staticdirname in staticdirnames:
            for filename in os.listdir(staticdirname):
                if filename.startswith('.'):
                    continue
                fullname = path.join(staticdirname, filename)
                targetname = path.join(self.outdir, '_static', filename)
                if path.isfile(fullname):
                    shutil.copyfile(fullname, targetname)
                elif path.isdir(fullname):
                    if filename in self.config.exclude_dirnames:
                        continue
                    if path.exists(targetname):
                        shutil.rmtree(targetname)
                    shutil.copytree(fullname, targetname)
        # last, copy logo file (handled differently)
        if self.config.html_logo:
            logobase = path.basename(self.config.html_logo)
            shutil.copyfile(path.join(self.confdir, self.config.html_logo),
                            path.join(self.outdir, '_static', logobase))
        self.info('done')

        # dump the search index
        self.handle_finish()

    def get_outdated_docs(self):
        if self.templates:
            template_mtime = self.templates.newest_template_mtime()
        else:
            template_mtime = 0
        for docname in self.env.found_docs:
            if docname not in self.env.all_docs:
                yield docname
                continue
            targetname = self.env.doc2path(docname, self.outdir, self.out_suffix)
            try:
                targetmtime = path.getmtime(targetname)
            except Exception:
                targetmtime = 0
            try:
                srcmtime = max(path.getmtime(self.env.doc2path(docname)),
                               template_mtime)
                if srcmtime > targetmtime:
                    yield docname
            except EnvironmentError:
                # source doesn't exist anymore
                pass

    def load_indexer(self, docnames):
        keep = set(self.env.all_docs) - set(docnames)
        try:
            f = open(path.join(self.outdir, self.searchindex_filename), 'rb')
            try:
                self.indexer.load(f, self.indexer_format)
            finally:
                f.close()
        except (IOError, OSError, ValueError):
            if keep:
                self.warn("search index couldn't be loaded, but not all documents "
                          "will be built: the index will be incomplete.")
        # delete all entries for files that will be rebuilt
        self.indexer.prune(keep)

    def index_page(self, pagename, doctree, title):
        # only index pages with title
        if self.indexer is not None and title:
            self.indexer.feed(pagename, title, doctree)

    # --------- these are overwritten by the serialization builder

    def get_target_uri(self, docname, typ=None):
        return docname + self.link_suffix

    def handle_page(self, pagename, addctx, templatename='page.html',
                    outfilename=None, event_arg=None):
        ctx = self.globalcontext.copy()
        # current_page_name is backwards compatibility
        ctx['pagename'] = ctx['current_page_name'] = pagename

        def pathto(otheruri, resource=False,
                   baseuri=self.get_target_uri(pagename)):
            if not resource:
                otheruri = self.get_target_uri(otheruri)
            return relative_uri(baseuri, otheruri)
        ctx['pathto'] = pathto
        ctx['hasdoc'] = lambda name: name in self.env.all_docs
        ctx['customsidebar'] = self.config.html_sidebars.get(pagename)
        ctx.update(addctx)

        self.app.emit('html-page-context', pagename, templatename, ctx, event_arg)

        output = self.templates.render(templatename, ctx)
        if not outfilename:
            outfilename = path.join(self.outdir, os_path(pagename) + self.out_suffix)
        ensuredir(path.dirname(outfilename)) # normally different from self.outdir
        try:
            f = codecs.open(outfilename, 'w', 'utf-8')
            try:
                f.write(output)
            finally:
                f.close()
        except (IOError, OSError), err:
            self.warn("Error writing file %s: %s" % (outfilename, err))
        if self.copysource and ctx.get('sourcename'):
            # copy the source file for the "show source" link
            source_name = path.join(self.outdir, '_sources', os_path(ctx['sourcename']))
            ensuredir(path.dirname(source_name))
            shutil.copyfile(self.env.doc2path(pagename), source_name)

    def handle_finish(self):
        self.info(bold('dumping search index... '), nonl=True)
        self.indexer.prune(self.env.all_docs)
        f = open(path.join(self.outdir, self.searchindex_filename), 'wb')
        try:
            self.indexer.dump(f, self.indexer_format)
        finally:
            f.close()
        self.info('done')

        self.info(bold('dumping object inventory... '), nonl=True)
        f = open(path.join(self.outdir, INVENTORY_FILENAME), 'w')
        try:
            f.write('# Sphinx inventory version 1\n')
            f.write('# Project: %s\n' % self.config.project.encode('utf-8'))
            f.write('# Version: %s\n' % self.config.version)
            for modname, info in self.env.modules.iteritems():
                f.write('%s mod %s\n' % (modname, self.get_target_uri(info[0])))
            for refname, (docname, desctype) in self.env.descrefs.iteritems():
                f.write('%s %s %s\n' % (refname, desctype, self.get_target_uri(docname)))
        finally:
            f.close()
        self.info('done')


class SerializingHTMLBuilder(StandaloneHTMLBuilder):
    """
    An abstract builder that serializes the HTML generated.
    """
    #: the serializing implementation to use.  Set this to a module that
    #: implements a `dump`, `load`, `dumps` and `loads` functions
    #: (pickle, simplejson etc.)
    implementation = None

    #: the filename for the global context file
    globalcontext_filename = None

    supported_image_types = ('image/svg+xml', 'image/png', 'image/gif',
                             'image/jpeg')

    def init(self):
        self.init_translator_class()
        self.templates = None   # no template bridge necessary

    def get_target_uri(self, docname, typ=None):
        if docname == 'index':
            return ''
        if docname.endswith(SEP + 'index'):
            return docname[:-5] # up to sep
        return docname + SEP

    def handle_page(self, pagename, ctx, templatename='page.html',
                    outfilename=None, event_arg=None):
        ctx['current_page_name'] = pagename
        sidebarfile = self.config.html_sidebars.get(pagename)
        if sidebarfile:
            ctx['customsidebar'] = sidebarfile

        if not outfilename:
            outfilename = path.join(self.outdir, os_path(pagename) + self.out_suffix)

        self.app.emit('html-page-context', pagename, templatename, ctx, event_arg)

        ensuredir(path.dirname(outfilename))
        f = open(outfilename, 'wb')
        try:
            self.implementation.dump(ctx, f, 2)
        finally:
            f.close()

        # if there is a source file, copy the source file for the
        # "show source" link
        if ctx.get('sourcename'):
            source_name = path.join(self.outdir, '_sources',
                                    os_path(ctx['sourcename']))
            ensuredir(path.dirname(source_name))
            shutil.copyfile(self.env.doc2path(pagename), source_name)

    def handle_finish(self):
        # dump the global context
        outfilename = path.join(self.outdir, self.globalcontext_filename)
        f = open(outfilename, 'wb')
        try:
            self.implementation.dump(self.globalcontext, f, 2)
        finally:
            f.close()

        # super here to dump the search index
        StandaloneHTMLBuilder.handle_finish(self)

        # copy the environment file from the doctree dir to the output dir
        # as needed by the web app
        shutil.copyfile(path.join(self.doctreedir, ENV_PICKLE_FILENAME),
                        path.join(self.outdir, ENV_PICKLE_FILENAME))

        # touch 'last build' file, used by the web application to determine
        # when to reload its environment and clear the cache
        open(path.join(self.outdir, LAST_BUILD_FILENAME), 'w').close()


class PickleHTMLBuilder(SerializingHTMLBuilder):
    """
    A Builder that dumps the generated HTML into pickle files.
    """
    implementation = pickle
    indexer_format = pickle
    name = 'pickle'
    out_suffix = '.fpickle'
    globalcontext_filename = 'globalcontext.pickle'
    searchindex_filename = 'searchindex.pickle'

# compatibility alias
WebHTMLBuilder = PickleHTMLBuilder


class JSONHTMLBuilder(SerializingHTMLBuilder):
    """
    A builder that dumps the generated HTML into JSON files.
    """
    implementation = json
    indexer_format = json
    name = 'json'
    out_suffix = '.fjson'
    globalcontext_filename = 'globalcontext.json'
    searchindex_filename = 'searchindex.json'

    def init(self):
        if json is None:
            from sphinx.application import SphinxError
            raise SphinxError('The module simplejson (or json in Python >= 2.6) '
                              'is not available. The JSONHTMLBuilder builder '
                              'will not work.')
        SerializingHTMLBuilder.init(self)