-
Notifications
You must be signed in to change notification settings - Fork 0
/
manual.rb
755 lines (576 loc) · 21.1 KB
/
manual.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
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
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
#
# Manual-generation Rake tasks and classes
# $Id$
#
# Authors:
# * Michael Granger <ged@FaerieMUD.org>
# * Mahlon E. Smith <mahlon@martini.nu>
#
# This was born out of a frustration with other static HTML generation modules
# and systems. I've tried webby, webgen, rote, staticweb, staticmatic, and
# nanoc, but I didn't find any of them really suitable (except rote, which was
# excellent but apparently isn't maintained and has a fundamental
# incompatibilty with Rake because of some questionable monkeypatching.)
#
# So, since nothing seemed to scratch my itch, I'm going to scratch it myself.
#
require 'pathname'
require 'singleton'
require 'rake/tasklib'
require 'erb'
### Namespace for Manual-generation classes
module Manual
### Manual page-generation class
class Page
### An abstract filter class for manual content transformation.
class Filter
include Singleton
# A list of inheriting classes, keyed by normalized name
@derivatives = {}
class << self; attr_reader :derivatives; end
### Inheritance callback -- keep track of all inheriting classes for
### later.
def self::inherited( subclass )
key = subclass.name.
sub( /^.*::/, '' ).
gsub( /[^[:alpha:]]+/, '_' ).
downcase.
sub( /filter$/, '' )
self.derivatives[ key ] = subclass
self.derivatives[ key.to_sym ] = subclass
super
end
### Export any static resources required by this filter to the given +output_dir+.
def export_resources( output_dir )
# No-op by default
end
### Process the +page+'s source with the filter and return the altered content.
def process( source, page, metadata )
raise NotImplementedError,
"%s does not implement the #process method" % [ self.class.name ]
end
end # class Filter
### The default page configuration if none is specified.
DEFAULT_CONFIG = {
'filters' => [ 'erb', 'links', 'textile' ],
'layout' => 'default.page',
'cleanup' => true,
}.freeze
# Pattern to match a source page with a YAML header
PAGE_WITH_YAML_HEADER = /
\A---\s*$ # It should should start with three hyphens
(.*?) # ...have some YAML stuff
^---\s*$ # then have another three-hyphen line,
(.*)\Z # then the rest of the document
/xm
# Options to pass to libtidy
TIDY_OPTIONS = {
:show_warnings => true,
:indent => true,
:indent_attributes => false,
:indent_spaces => 4,
:vertical_space => true,
:tab_size => 4,
:wrap_attributes => true,
:wrap => 100,
:char_encoding => 'utf8'
}
### Create a new page-generator for the given +sourcefile+, which will use
### ones of the templates in +layouts_dir+ as a wrapper. The +basepath+
### is the path to the base output directory, and the +catalog+ is the
### Manual::PageCatalog to which the page belongs.
def initialize( catalog, sourcefile, layouts_dir, basepath='.' )
@catalog = catalog
@sourcefile = Pathname.new( sourcefile )
@layouts_dir = Pathname.new( layouts_dir )
@basepath = basepath
rawsource = @sourcefile.read
@config, @source = self.read_page_config( rawsource )
# $stderr.puts "Config is: %p" % [@config],
# "Source is: %p" % [ @source[0,100] ]
@filters = self.load_filters( @config['filters'] )
super()
end
######
public
######
# The Manual::PageCatalog to which the page belongs
attr_reader :catalog
# The relative path to the base directory, for prepending to page paths
attr_reader :basepath
# The Pathname object that specifys the page source file
attr_reader :sourcefile
# The configured layouts directory as a Pathname object.
attr_reader :layouts_dir
# The page configuration, as read from its YAML header
attr_reader :config
# The raw source of the page
attr_reader :source
# The filters the page will use to render itself
attr_reader :filters
### Generate HTML output from the page and return it.
def generate( metadata )
content = self.generate_content( @source, metadata )
layout = self.config['layout'].sub( /\.page$/, '' )
templatepath = @layouts_dir + "#{layout}.page"
template = ERB.new( templatepath.read )
page = self
html = template.result( binding() )
# Use Tidy to clean up the html if 'cleanup' is turned on, but remove the Tidy
# meta-generator propaganda/advertising.
html = self.cleanup( html ).sub( %r:<meta name="generator"[^>]*tidy[^>]*/>:im, '' ) if
self.config['cleanup']
return html
end
### Return the page title as specified in the YAML options
def title
return self.config['title'] || self.sourcefile.basename
end
### Run the various filters on the given input and return the transformed
### content.
def generate_content( input, metadata )
return @filters.inject( input ) do |source, filter|
filter.process( source, self, metadata )
end
end
### Trim the YAML header from the provided page +source+, convert it to
### a Ruby object, and return it.
def read_page_config( source )
unless source =~ PAGE_WITH_YAML_HEADER
return DEFAULT_CONFIG.dup, source
end
pageconfig = YAML.load( $1 )
source = $2
return DEFAULT_CONFIG.merge( pageconfig ), source
end
### Clean up and return the given HTML +source+.
def cleanup( source )
require 'tidy'
Tidy.path = '/usr/lib/libtidy.dylib'
Tidy.open( TIDY_OPTIONS ) do |tidy|
tidy.options.output_xhtml = true
xml = tidy.clean( source )
errors = tidy.errors
error_message( errors.join ) unless errors.empty?
trace tidy.diagnostics
return xml
end
rescue LoadError => err
trace "No cleanup: " + err.message
return source
end
### Get (singleton) instances of the filters named in +filterlist+ and return them.
def load_filters( filterlist )
filterlist.flatten.collect do |key|
raise ArgumentError, "filter '#{key}' is not loaded" unless
Manual::Page::Filter.derivatives.key?( key )
Manual::Page::Filter.derivatives[ key ].instance
end
end
### Build the index relative to the receiving page and return it as a String
def make_index_html
items = [ '<div class="index">' ]
@catalog.traverse_page_hierarchy( self ) do |type, title, path|
case type
when :section
items << %Q{<div class="section">}
items << %Q{<h2><a href="#{self.basepath + path}/">#{title}</a></h2>}
items << '<ul class="index-section">'
when :current_section
items << %Q{<div class="section current-section">}
items << %Q{<h2><a href="#{self.basepath + path}/">#{title}</a></h2>}
items << '<ul class="index-section current-index-section">'
when :section_end, :current_section_end
items << '</ul></div>'
when :entry
items << %Q{<li><a href="#{self.basepath + path}.html">#{title}</a></li>}
when :current_entry
items << %Q{<li class="current-entry">#{title}</li>}
else
raise "Unknown index entry type %p" % [ type ]
end
end
items << '</div>'
return items.join("\n")
end
end
### A catalog of Manual::Page objects that can be referenced by various criteria.
class PageCatalog
### Create a new PageCatalog that will load Manual::Page objects for .page files
### in the specified +sourcedir+.
def initialize( sourcedir, layoutsdir )
@sourcedir = sourcedir
@layoutsdir = layoutsdir
@pages = []
@path_index = {}
@uri_index = {}
@title_index = {}
@hierarchy = {}
self.find_and_load_pages
end
######
public
######
# An index of the pages in the catalog by Pathname
attr_reader :path_index
# An index of the pages in the catalog by title
attr_reader :title_index
# An index of the pages in the catalog by the URI of their source relative to the source
# directory
attr_reader :uri_index
# The hierarchy of pages in the catalog, suitable for generating an on-page
attr_reader :hierarchy
# An Array of all Manual::Page objects found
attr_reader :pages
# The Pathname location of the .page files.
attr_reader :sourcedir
# The Pathname location of look and feel templates.
attr_reader :layoutsdir
### Traverse the catalog's #hierarchy, yielding to the given +builder+
### block for each entry, as well as each time a sub-hash is entered or
### exited, setting the +type+ appropriately. Valid values for +type+ are:
###
### :entry, :section, :section_end
###
### If the optional +from+ value is given, it should be the Manual::Page object
### which is considered "current"; if the +from+ object is the same as the
### hierarchy entry being yielded, it will be yielded with the +type+ set to
### one of:
###
### :current_entry, :current_section, :current_section_end
###
### each of which correspond to the like-named type from above.
def traverse_page_hierarchy( from=nil, &builder ) # :yields: type, title, path
raise LocalJumpError, "no block given" unless builder
self.traverse_hierarchy( Pathname.new(''), self.hierarchy, from, &builder )
end
#########
protected
#########
### Sort and traverse the specified +hash+ recursively, yielding for each entry.
def traverse_hierarchy( path, hash, from=nil, &builder )
# Now generate the index in the sorted order
sort_hierarchy( hash ).each do |subpath, page_or_section|
if page_or_section.is_a?( Hash )
self.handle_section_callback( path + subpath, page_or_section, from, &builder )
else
next if subpath == INDEX_PATH
self.handle_page_callback( path + subpath, page_or_section, from, &builder )
end
end
end
### Return the specified hierarchy of pages as a sorted Array of tuples.
### Sort the hierarchy using the 'index' config value of either the
### page, or the directory's index page if it's a directory.
def sort_hierarchy( hierarchy )
hierarchy.sort_by do |subpath, page_or_section|
# Directory
if page_or_section.is_a?( Hash )
# Use the index of the index page if it exists
if page_or_section[INDEX_PATH]
idx = page_or_section[INDEX_PATH].config['index']
trace "Index page's index for directory '%s' is: %p" % [ subpath, idx ]
idx || subpath
else
trace "Using the path for the sort of directory %p" % [ subpath ]
subpath
end
# Page
else
if subpath == INDEX_PATH
trace "Sort index for index page %p is 0" % [ subpath ]
0
else
idx = page_or_section.config['index']
trace "Sort index for page %p is: %p" % [ subpath, idx ]
idx || subpath
end
end
end # sort_by
end
INDEX_PATH = Pathname.new('index')
### Build up the data structures necessary for calling the +builder+ callback
### for an index section and call it, then recurse into the section contents.
def handle_section_callback( path, section, from=nil, &builder )
from_current = false
# Call the callback with :section -- determine the section title from
# the 'index.page' file underneath it, or the directory name if no
# index.page exists.
if section.key?( INDEX_PATH )
if section[INDEX_PATH] == from
from_current = true
builder.call( :current_section, section[INDEX_PATH].title, path )
else
builder.call( :section, section[INDEX_PATH].title, path )
end
else
title = File.dirname( path ).gsub( /_/, ' ' )
builder.call( :section, title, path )
end
# Recurse
self.traverse_hierarchy( path, section, from, &builder )
# Call the callback with :section_end
if from_current
builder.call( :current_section_end, '', path )
else
builder.call( :section_end, '', path )
end
end
### Yield the specified +page+ to the builder
def handle_page_callback( path, page, from=nil )
if from == page
yield( :current_entry, page.title, path )
else
yield( :entry, page.title, path )
end
end
### Find and store
### Find all .page files under the configured +sourcedir+ and create a new
### Manual::Page object for each one.
def find_and_load_pages
Pathname.glob( @sourcedir + '**/*.page' ).each do |pagefile|
path_to_base = @sourcedir.relative_path_from( pagefile.dirname )
page = Manual::Page.new( self, pagefile, @layoutsdir, path_to_base )
hierpath = pagefile.relative_path_from( @sourcedir )
@pages << page
@path_index[ pagefile ] = page
@title_index[ page.title ] = page
@uri_index[ hierpath.to_s ] = page
# Place the page in the page hierarchy by using inject to find and/or create the
# necessary subhashes. The last run of inject will return the leaf hash in which
# the page will live
section = hierpath.dirname.split[1..-1].inject( @hierarchy ) do |hier, component|
hier[ component ] ||= {}
hier[ component ]
end
section[ pagefile.basename('.page') ] = page
end
end
end
### A Textile filter for the manual generation tasklib, implemented using RedCloth.
class TextileFilter < Manual::Page::Filter
### Load RedCloth when the filter is first created
def initialize( *args )
require 'redcloth'
super
end
### Process the given +source+ as Textile and return the resulting HTML
### fragment.
def process( source, *ignored )
formatter = RedCloth::TextileDoc.new( source )
formatter.hard_breaks = false
formatter.no_span_caps = true
return formatter.to_html
end
end
### An ERB filter for the manual generation tasklib, implemented using Erubis.
class ErbFilter < Manual::Page::Filter
### Process the given +source+ as ERB and return the resulting HTML
### fragment.
def process( source, page, metadata )
template_name = page.sourcefile.basename
template = ERB.new( source )
return template.result( binding() )
end
end
### Manual generation task library
class GenTask < Rake::TaskLib
# Default values for task config variables
DEFAULT_NAME = :manual
DEFAULT_BASE_DIR = Pathname.new( 'docs/manual' )
DEFAULT_SOURCE_DIR = 'source'
DEFAULT_LAYOUTS_DIR = 'layouts'
DEFAULT_OUTPUT_DIR = 'output'
DEFAULT_RESOURCE_DIR = 'resources'
DEFAULT_LIB_DIR = 'lib'
DEFAULT_METADATA = OpenStruct.new
### Define a new manual-generation task with the given +name+.
def initialize( name=:manual )
@name = name
@source_dir = DEFAULT_SOURCE_DIR
@layouts_dir = DEFAULT_LAYOUTS_DIR
@output_dir = DEFAULT_OUTPUT_DIR
@resource_dir = DEFAULT_RESOURCE_DIR
@lib_dir = DEFAULT_LIB_DIR
@metadata = DEFAULT_METADATA
yield( self ) if block_given?
self.define
end
######
public
######
attr_accessor :base_dir,
:source_dir,
:layouts_dir,
:output_dir,
:resource_dir,
:lib_dir,
:metadata
attr_reader :name
### Set up the tasks for building the manual
def define
# Set up a description if the caller hasn't already defined one
unless Rake.application.last_comment
desc "Generate the manual"
end
# Make Pathnames of the directories relative to the base_dir
basedir = Pathname.new( @base_dir )
sourcedir = basedir + @source_dir
layoutsdir = basedir + @layouts_dir
outputdir = @output_dir
resourcedir = basedir + @resource_dir
libdir = basedir + @lib_dir
load_filter_libraries( libdir )
catalog = Manual::PageCatalog.new( sourcedir, layoutsdir )
# Declare the tasks outside the namespace that point in
task @name => "#@name:build"
task "clobber_#@name" => "#@name:clobber"
namespace( self.name ) do
setup_resource_copy_tasks( resourcedir, outputdir )
manual_pages = setup_page_conversion_tasks( sourcedir, outputdir, catalog )
desc "Build the manual"
task :build => [ :rdoc, :copy_resources, :generate_pages ]
task :clobber do
RakeFileUtils.verbose( $verbose ) do
rm_f manual_pages.to_a
end
remove_dir( outputdir ) if ( outputdir + '.buildtime' ).exist?
end
desc "Remove any previously-generated parts of the manual and rebuild it"
task :rebuild => [ :clobber, self.name ]
end
end # def define
### Load the filter libraries provided in the given +libdir+
def load_filter_libraries( libdir )
Pathname.glob( libdir + '*.rb' ) do |filterlib|
trace " loading filter library #{filterlib}"
require( filterlib )
end
end
### Set up the main HTML-generation task that will convert files in the given +sourcedir+ to
### HTML in the +outputdir+
def setup_page_conversion_tasks( sourcedir, outputdir, catalog )
# we need to figure out what HTML pages need to be generated so we can set up the
# dependency that causes the rule to be fired for each one when the task is invoked.
manual_sources = FileList[ catalog.path_index.keys.map {|pn| pn.to_s} ]
trace " found %d source files" % [ manual_sources.length ]
# Map .page files to their equivalent .html output
html_pathmap = "%%{%s,%s}X.html" % [ sourcedir, outputdir ]
manual_pages = manual_sources.pathmap( html_pathmap )
trace "Mapping sources like so: \n %p -> %p" %
[ manual_sources.first, manual_pages.first ]
# Output directory task
directory( outputdir.to_s )
file outputdir.to_s do
touch outputdir + '.buildtime'
end
# Rule to generate .html files from .page files
rule(
%r{#{outputdir}/.*\.html$} => [
proc {|name| name.sub(/\.[^.]+$/, '.page').sub( outputdir, sourcedir) },
outputdir.to_s
]) do |task|
source = Pathname.new( task.source )
target = Pathname.new( task.name )
log " #{ source } -> #{ target }"
page = catalog.path_index[ source ]
#trace " page object is: %p" % [ page ]
target.dirname.mkpath
target.open( File::WRONLY|File::CREAT|File::TRUNC ) do |io|
io.write( page.generate(metadata) )
end
end
# Group all the manual page output files targets into a containing task
desc "Generate any pages of the manual that have changed"
task :generate_pages => manual_pages
return manual_pages
end
### Copy method for resources -- passed as a block to the various file tasks that copy
### resources to the output directory.
def copy_resource( task )
source = task.prerequisites[ 1 ]
target = task.name
when_writing do
log " #{source} -> #{target}"
mkpath File.dirname( target )
cp source, target, :verbose => $trace
end
end
### Set up a rule for copying files from the resources directory to the output dir.
def setup_resource_copy_tasks( resourcedir, outputdir )
resources = FileList[ resourcedir + '**/*.{js,css,png,gif,jpg,html}' ]
resources.exclude( /\.svn/ )
target_pathmap = "%%{%s,%s}p" % [ resourcedir, outputdir ]
targets = resources.pathmap( target_pathmap )
copier = self.method( :copy_resource ).to_proc
# Create a file task to copy each file to the output directory
resources.each_with_index do |resource, i|
file( targets[i] => [ outputdir.to_s, resource ], &copier )
end
# Now group all the resource file tasks into a containing task
desc "Copy manual resources to the output directory"
task :copy_resources => targets
end
end # class Manual::GenTask
end
### Task: manual generation
if MANUALDIR.exist?
MANUALOUTPUTDIR = MANUALDIR + 'output'
trace "Manual will be generated in: #{MANUALOUTPUTDIR}"
begin
directory MANUALOUTPUTDIR.to_s
Manual::GenTask.new do |manual|
manual.metadata.version = PKG_VERSION
manual.metadata.api_dir = RDOCDIR
manual.output_dir = MANUALOUTPUTDIR
manual.base_dir = MANUALDIR
manual.source_dir = 'src'
end
task :clobber_manual do
rmtree( MANUALOUTPUTDIR, :verbose => true )
end
rescue LoadError => err
task :no_manual do
$stderr.puts "Manual-generation tasks not defined: %s" % [ err.message ]
end
task :manual => :no_manual
task :clobber_manual => :no_manual
end
else
TEMPLATEDIR = RAKE_TASKDIR + 'manualdir'
if TEMPLATEDIR.exist?
desc "Create a manual for this project from a template"
task :manual do
log "No manual directory (#{MANUALDIR}) currently exists."
ask_for_confirmation( "Create a new manual directory tree from a template?" ) do
MANUALDIR.mkpath
%w[layouts lib output resources src].each do |dir|
FileUtils.mkpath( MANUALDIR + dir, :mode => 0755, :verbose => true, :noop => $dryrun )
end
Pathname.glob( TEMPLATEDIR + '**/*.{rb,css,png,js,erb,page}' ).each do |tmplfile|
trace "extname is: #{tmplfile.extname}"
# Render ERB files
if tmplfile.extname == '.erb'
rname = tmplfile.basename( '.erb' )
target = MANUALDIR + tmplfile.dirname.relative_path_from( TEMPLATEDIR ) + rname
template = ERB.new( tmplfile.read, nil, '<>' )
target.dirname.mkpath( :mode => 0755, :verbose => true, :noop => $dryrun ) unless
target.dirname.directory?
html = template.result( binding() )
log "generating #{target}: html => #{html[0,20]}"
target.open( File::WRONLY|File::CREAT|File::EXCL, 0644 ) do |fh|
fh.print( html )
end
# Just copy anything else
else
target = MANUALDIR + tmplfile.relative_path_from( TEMPLATEDIR )
FileUtils.mkpath target.dirname,
:mode => 0755, :verbose => true, :noop => $dryrun unless target.dirname.directory?
FileUtils.install tmplfile, target,
:mode => 0644, :verbose => true, :noop => $dryrun
end
end
end
end # task :manual
end
end