-
Notifications
You must be signed in to change notification settings - Fork 644
/
wicked_pdf.rb
199 lines (179 loc) · 7.2 KB
/
wicked_pdf.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
# wkhtml2pdf Ruby interface
# http://code.google.com/p/wkhtmltopdf/
require 'logger'
require 'digest/md5'
require 'rbconfig'
require RbConfig::CONFIG['target_os'] == 'mingw32' && !(RUBY_VERSION =~ /1.9/) ? 'win32/open3' : 'open3'
require 'active_support/core_ext/class/attribute_accessors'
require 'active_support/core_ext/object/blank'
require 'wicked_pdf_railtie'
require 'wicked_pdf_tempfile'
class WickedPdf
@@config = {}
cattr_accessor :config
def initialize(wkhtmltopdf_binary_path = nil)
@exe_path = wkhtmltopdf_binary_path
@exe_path ||= WickedPdf.config[:exe_path] unless WickedPdf.config.empty?
@exe_path ||= (defined?(Bundler) ? `bundle exec which wkhtmltopdf` : `which wkhtmltopdf`).chomp
raise "Location of wkhtmltopdf unknown" if @exe_path.empty?
raise "Bad wkhtmltopdf's path" unless File.exists?(@exe_path)
raise "Wkhtmltopdf is not executable" unless File.executable?(@exe_path)
end
def pdf_from_string(string, options={})
command = "\"#{@exe_path}\" #{'-q ' unless on_windows?}#{parse_options(options)} - - " # -q for no errors on stdout
print_command(command) if in_development_mode?
pdf, err = Open3.popen3(command) do |stdin, stdout, stderr|
stdin.binmode
stdout.binmode
stderr.binmode
stdin.write(string)
stdin.close
[stdout.read, stderr.read]
end
raise "PDF could not be generated!" if pdf and pdf.rstrip.length == 0
pdf
rescue Exception => e
raise "Failed to execute:\n#{command}\nError: #{e}"
end
private
def in_development_mode?
(defined?(Rails) && Rails.env == 'development') ||
(defined?(RAILS_ENV) && RAILS_ENV == 'development')
end
def on_windows?
RbConfig::CONFIG['target_os'] == 'mingw32'
end
def print_command(cmd)
p "*"*15 + cmd + "*"*15
end
def parse_options(options)
[
parse_extra(options),
parse_header_footer(:header => options.delete(:header),
:footer => options.delete(:footer),
:layout => options[:layout]),
parse_toc(options.delete(:toc)),
parse_outline(options.delete(:outline)),
parse_margins(options.delete(:margin)),
parse_others(options),
parse_basic_auth(options)
].join(' ')
end
def parse_extra(options)
options[:extra].nil? ? '' : options[:extra]
end
def parse_basic_auth(options)
if options[:basic_auth]
user, passwd = Base64.decode64(options[:basic_auth]).split(":")
"--username '#{user}' --password '#{passwd}'"
else
""
end
end
def make_option(name, value, type=:string)
if value.is_a?(Array)
return value.collect { |v| make_option(name, v, type) }.join('')
end
"--#{name.gsub('_', '-')} " + case type
when :boolean then ""
when :numeric then value.to_s
when :name_value then value.to_s
else "\"#{value}\""
end + " "
end
def make_options(options, names, prefix="", type=:string)
names.collect {|o| make_option("#{prefix.blank? ? "" : prefix + "-"}#{o.to_s}", options[o], type) unless options[o].blank?}.join
end
def parse_header_footer(options)
r=""
[:header, :footer].collect do |hf|
unless options[hf].blank?
opt_hf = options[hf]
r += make_options(opt_hf, [:center, :font_name, :left, :right], "#{hf.to_s}")
r += make_options(opt_hf, [:font_size, :spacing], "#{hf.to_s}", :numeric)
r += make_options(opt_hf, [:line], "#{hf.to_s}", :boolean)
if options[hf] && options[hf][:content]
@hf_tempfiles = [] if ! defined?(@hf_tempfiles)
@hf_tempfiles.push( tf=WickedPdfTempfile.new("wicked_#{hf}_pdf.html") )
tf.write options[hf][:content]
tf.flush
options[hf].delete(:content)
options[hf][:html] = {}
options[hf][:html][:url] = "file://#{tf.path}"
end
unless opt_hf[:html].blank?
r += make_option("#{hf.to_s}-html", opt_hf[:html][:url]) unless opt_hf[:html][:url].blank?
end
end
end unless options.blank?
r
end
def parse_toc(options)
r = '--toc ' unless options.nil?
unless options.blank?
r += make_options(options, [ :font_name, :header_text], "toc")
r +=make_options(options, [ :depth,
:header_fs,
:l1_font_size,
:l2_font_size,
:l3_font_size,
:l4_font_size,
:l5_font_size,
:l6_font_size,
:l7_font_size,
:l1_indentation,
:l2_indentation,
:l3_indentation,
:l4_indentation,
:l5_indentation,
:l6_indentation,
:l7_indentation], "toc", :numeric)
r +=make_options(options, [ :no_dots,
:disable_links,
:disable_back_links], "toc", :boolean)
end
return r
end
def parse_outline(options)
unless options.blank?
r = make_options(options, [:outline], "", :boolean)
r +=make_options(options, [:outline_depth], "", :numeric)
end
end
def parse_margins(options)
make_options(options, [:top, :bottom, :left, :right], "margin", :numeric) unless options.blank?
end
def parse_others(options)
unless options.blank?
r = make_options(options, [ :orientation,
:page_size,
:page_width,
:page_height,
:proxy,
:username,
:password,
:cover,
:dpi,
:encoding,
:user_style_sheet])
r +=make_options(options, [ :cookie,
:post], "", :name_value)
r +=make_options(options, [ :redirect_delay,
:zoom,
:page_offset,
:javascript_delay], "", :numeric)
r +=make_options(options, [ :book,
:default_header,
:disable_javascript,
:greyscale,
:lowquality,
:enable_plugins,
:disable_internal_links,
:disable_external_links,
:print_media_type,
:disable_smart_shrinking,
:use_xserver,
:no_background], "", :boolean)
end
end
end