/
page.rb
514 lines (446 loc) · 14.7 KB
/
page.rb
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
# ~*~ encoding: utf-8 ~*~
module Gollum
class Page
include Pagination
Wiki.page_class = self
SUBPAGENAMES = [:header, :footer, :sidebar]
# Sets a Boolean determing whether this page is a historical version.
#
# Returns nothing.
attr_writer :historical
# Parent page if this is a sub page
#
# Returns a Page
attr_accessor :parent_page
# Checks a filename against the registered markup extensions
#
# filename - String filename, like "Home.md"
#
# Returns e.g. ["Home", :markdown], or [] if the extension is unregistered
def self.parse_filename(filename)
return [] unless filename =~ /^(.+)\.([a-zA-Z]\w*)$/i
pref, ext = Regexp.last_match[1], Regexp.last_match[2]
Gollum::Markup.formats.each_pair do |name, format|
return [pref, name] if ext =~ format[:regexp]
end
[]
end
# Checks if a filename has a valid, registered extension
#
# filename - String filename, like "Home.md".
#
# Returns the matching String basename of the file without the extension.
def self.valid_filename?(filename)
self.parse_filename(filename).first
end
# Checks if a filename has a valid extension understood by GitHub::Markup.
# Also, checks if the filename has no "_" in the front (such as
# _Footer.md).
#
# filename - String filename, like "Home.md".
#
# Returns the matching String basename of the file without the extension.
def self.valid_page_name?(filename)
match = valid_filename?(filename)
filename =~ /^_/ ? false : match
end
# Public: The format of a given filename.
#
# filename - The String filename.
#
# Returns the Symbol format of the page; one of the registered format types
def self.format_for(filename)
self.parse_filename(filename).last
end
# Reusable filter to turn a filename (without path) into a canonical name.
# Strips extension, converts dashes to spaces.
#
# Returns the filtered String.
def self.canonicalize_filename(filename)
strip_filename(filename).gsub('-', ' ')
end
# Reusable filter to strip extension and path from filename
#
# filename - The string path or filename to strip
#
# Returns the stripped String.
def self.strip_filename(filename)
::File.basename(filename, ::File.extname(filename))
end
# Public: Initialize a page.
#
# wiki - The Gollum::Wiki in question.
#
# Returns a newly initialized Gollum::Page.
def initialize(wiki)
@wiki = wiki
@blob = nil
@formatted_data = nil
@doc = nil
@parent_page = nil
end
# Public: The on-disk filename of the page including extension.
#
# Returns the String name.
def filename
@blob && @blob.name
end
# Public: The on-disk filename of the page with extension stripped.
#
# Returns the String name.
def filename_stripped
self.class.strip_filename(filename)
end
# Public: The canonical page name without extension, and dashes converted
# to spaces.
#
# Returns the String name.
def name
self.class.canonicalize_filename(filename)
end
# Public: The title will be constructed from the
# filename by stripping the extension and replacing any dashes with
# spaces.
#
# Returns the fully sanitized String title.
def title
Sanitize.clean(name).strip
end
# Public: Determines if this is a sub-page
# Sub-pages have filenames beginning with an underscore
#
# Returns true or false.
def sub_page
filename =~ /^_/
end
# Public: The path of the page within the repo.
#
# Returns the String path.
attr_reader :path
# Public: The url path required to reach this page within the repo.
#
# Returns the String url_path
def url_path
path = if self.path.include?('/')
self.path.sub(/\/[^\/]+$/, '/')
else
''
end
path << Page.cname(self.name, '-', '-')
path
end
# Public: The display form of the url path required to reach this page within the repo.
#
# Returns the String url_path
def url_path_display
url_path.gsub("-", " ")
end
# Public: Defines title for page.rb
#
# Returns the String title
def url_path_title
metadata_title || url_path_display
end
# Public: Metadata title
#
# Set with <!-- --- title: New Title --> in page content
#
# Returns the String title or nil if not defined
def metadata_title
if metadata
title = metadata['title']
return title unless title.nil?
end
nil
end
# Public: The url_path, but CGI escaped.
#
# Returns the String url_path
def escaped_url_path
CGI.escape(self.url_path).gsub('%2F', '/')
end
# Public: The raw contents of the page.
#
# Returns the String data.
def raw_data
return nil unless @blob
if !@wiki.repo.bare && @blob.is_symlink
new_path = @blob.symlink_target(::File.join(@wiki.repo.path, '..', self.path))
return IO.read(new_path) if new_path
end
@blob.data
end
# Public: A text data encoded in specified encoding.
#
# encoding - An Encoding or nil
#
# Returns a character encoding aware String.
def text_data(encoding=nil)
if raw_data.respond_to?(:encoding)
raw_data.force_encoding(encoding || Encoding::UTF_8)
else
raw_data
end
end
# Public: The formatted contents of the page.
#
# encoding - Encoding Constant or String.
#
# Returns the String data.
def formatted_data(encoding = nil, include_levels = 10, &block)
return nil unless @blob
if @formatted_data && @doc then
yield @doc if block_given?
else
@formatted_data = markup_class.render(historical?, encoding, include_levels) do |doc|
@doc = doc
yield doc if block_given?
end
end
@formatted_data
end
# Public: The table of contents of the page.
#
# formatted_data - page already marked up in html.
#
# Returns the String data.
def toc_data
return @parent_page.toc_data if @parent_page and @sub_page
formatted_data if markup_class.toc == nil
markup_class.toc
end
# Public: Embedded metadata.
#
# Returns Hash of metadata.
def metadata
formatted_data if markup_class.metadata == nil
markup_class.metadata
end
# Public: The format of the page.
#
# Returns the Symbol format of the page; one of the registered format types
def format
self.class.format_for(@blob.name)
end
# Gets the Gollum::Markup instance that will render this page's content.
#
# Returns a Gollum::Markup instance.
def markup_class
@markup_class ||= @wiki.markup_classes[format].new(self)
end
# Public: The current version of the page.
#
# Returns the Gollum::Git::Commit.
attr_reader :version
# Public: All of the versions that have touched the Page.
#
# options - The options Hash:
# :page - The Integer page number (default: 1).
# :per_page - The Integer max count of items to return.
# :follow - Follow's a file across renames, slower. (default: false)
#
# Returns an Array of Gollum::Git::Commit.
def versions(options = {})
@wiki.repo.git.versions_for_path(@path, @wiki.ref, log_pagination_options(options))
end
# Public: The last version that has touched the Page. Can be nil.
#
# Returns Gollum::Git::Commit, or nil.
def last_version
return @last_version if defined? @last_version
@last_version = @wiki.repo.git.versions_for_path(@path, @wiki.ref, {:max_count => 1}).first
end
# Public: The first 7 characters of the current version.
#
# Returns the first 7 characters of the current version.
def version_short
version.to_s[0, 7]
end
# Public: The header Page.
#
# Returns the header Page or nil if none exists.
def header
find_sub_pages unless defined?(@header)
@header
end
# Public: The footer Page.
#
# Returns the footer Page or nil if none exists.
def footer
find_sub_pages unless defined?(@footer)
@footer
end
# Public: The sidebar Page.
#
# Returns the sidebar Page or nil if none exists.
def sidebar
find_sub_pages unless defined?(@sidebar)
@sidebar
end
# Gets a Boolean determining whether this page is a historical version.
# Historical pages are pulled using exact SHA hashes and format all links
# with rel="nofollow"
#
# Returns true if the page is pulled from a named branch or tag, or false.
def historical?
!!@historical
end
#########################################################################
#
# Class Methods
#
#########################################################################
# Convert a human page name into a canonical page name.
#
# name - The String human page name.
# char_white_sub - Substitution for whitespace
# char_other_sub - Substitution for other special chars
#
# Examples
#
# Page.cname("Bilbo Baggins")
# # => 'Bilbo-Baggins'
#
# Page.cname("Bilbo Baggins",'_')
# # => 'Bilbo_Baggins'
#
# Returns the String canonical name.
def self.cname(name, char_white_sub = '-', char_other_sub = '-')
name.respond_to?(:gsub) ?
name.gsub(%r(\s), char_white_sub).gsub(%r([<>+]), char_other_sub) :
''
end
# Convert a format Symbol into an extension String.
#
# format - The format Symbol.
#
# Returns the String extension (no leading period).
def self.format_to_ext(format)
format == :markdown ? "md" : format.to_s
end
#########################################################################
#
# Internal Methods
#
#########################################################################
# The underlying wiki repo.
#
# Returns the Gollum::Wiki containing the page.
attr_reader :wiki
# Set the Gollum::Git::Commit version of the page.
#
# Returns nothing.
attr_writer :version
# Find a page in the given Gollum repo.
#
# name - The human or canonical String page name to find.
# version - The String version ID to find.
#
# Returns a Gollum::Page or nil if the page could not be found.
def find(name, version, dir = nil, exact = false)
map = @wiki.tree_map_for(version.to_s)
if (page = find_page_in_tree(map, name, dir, exact))
page.version = version.is_a?(Gollum::Git::Commit) ?
version : @wiki.commit_for(version)
page.historical = page.version.to_s == version.to_s
page
end
rescue Gollum::Git::NoSuchShaFound
end
# Find a page in a given tree.
#
# map - The Array tree map from Wiki#tree_map.
# name - The canonical String page name.
# checked_dir - Optional String of the directory a matching page needs
# to be in. The string should
#
# Returns a Gollum::Page or nil if the page could not be found.
def find_page_in_tree(map, name, checked_dir = nil, exact = false)
return nil if !map || name.to_s.empty?
checked_dir = BlobEntry.normalize_dir(checked_dir)
checked_dir = '' if exact && checked_dir.nil?
name = ::File.join(checked_dir, name) if checked_dir
map.each do |entry|
next if entry.name.to_s.empty?
path = checked_dir ? ::File.join(entry.dir, entry.name) : entry.name
next unless page_match(name, path)
return entry.page(@wiki, @version)
end
return nil # nothing was found
end
# Populate the Page with information from the Blob.
#
# blob - The Gollum::Git::Blob that contains the info.
# path - The String directory path of the page file.
#
# Returns the populated Gollum::Page.
def populate(blob, path=nil)
@blob = blob
@path = "#{path}/#{blob.name}"[1..-1]
self
end
# The full directory path for the given tree.
#
# treemap - The Hash treemap containing parentage information.
# tree - The Gollum::Git::Tree for which to compute the path.
#
# Returns the String path.
def tree_path(treemap, tree)
if (ptree = treemap[tree])
tree_path(treemap, ptree) + '/' + tree.name
else
''
end
end
# Compare the canonicalized versions of the two names.
#
# name - The human or canonical String page name.
# path - the String path on disk (including file extension).
#
# Returns a Boolean.
def page_match(name, path)
if (match = self.class.valid_filename?(path))
@wiki.ws_subs.each do |sub|
return true if Page.cname(name).downcase == Page.cname(match, sub).downcase
end
end
false
end
# Loads sub pages. Sub page names (footers, headers, sidebars) are prefixed with
# an underscore to distinguish them from other Pages. If there is not one within
# the current directory, starts walking up the directory tree to try and find one
# within parent directories.
def find_sub_pages(subpagenames = SUBPAGENAMES, map = nil)
subpagenames.each{|subpagename| instance_variable_set("@#{subpagename}", nil)}
return nil if self.filename =~ /^_/ || ! self.version
map ||= @wiki.tree_map_for(@wiki.ref, true)
valid_names = subpagenames.map(&:capitalize).join("|")
# From Ruby 2.2 onwards map.select! could be used
map = map.select{|entry| entry.name =~ /^_(#{valid_names})/ }
return if map.empty?
subpagenames.each do |subpagename|
dir = ::Pathname.new(self.path)
while dir = dir.parent do
subpageblob = map.find do |blob_entry|
filename = "_#{subpagename.to_s.capitalize}"
searchpath = dir == Pathname.new('.') ? Pathname.new(filename) : dir + filename
entrypath = ::Pathname.new(blob_entry.path)
# Ignore extentions
entrypath = entrypath.dirname + entrypath.basename(entrypath.extname)
entrypath == searchpath
end
if subpageblob
subpage = subpageblob.page(@wiki, @version)
subpage.parent_page = self
instance_variable_set("@#{subpagename}", subpage)
break
end
break if dir == Pathname.new('.')
end
end
end
def inspect
%(#<#{self.class.name}:#{object_id} #{name} (#{format}) @wiki=#{@wiki.repo.path.inspect}>)
end
end
end