require 'rdoc/generators/html_generator'
module Generators
class CHMGenerator < HTMLGenerator
HHC_PATH = "c:/Program Files/HTML Help Workshop/hhc.exe"
# Standard generator factory
def CHMGenerator.for(options)
CHMGenerator.new(options)
end
def initialize(*args)
super
@op_name = @options.op_name || "rdoc"
check_for_html_help_workshop
end
def check_for_html_help_workshop
stat = File.stat(HHC_PATH)
rescue
$stderr <<
"\n.chm output generation requires that Microsoft's Html Help\n" <<
"Workshop is installed. RDoc looks for it in:\n\n " <<
HHC_PATH <<
"\n\nYou can download a copy for free from:\n\n" <<
" http://msdn.microsoft.com/library/default.asp?" <<
"url=/library/en-us/htmlhelp/html/hwMicrosoftHTMLHelpDownloads.asp\n\n"
exit 99
end
# Generate the html as normal, then wrap it
# in a help project
def generate(info)
super
@project_name = @op_name + ".hhp"
create_help_project
end
# The project contains the project file, a table of contents
# and an index
def create_help_project
create_project_file
create_contents_and_index
compile_project
end
# The project file links together all the various
# files that go to make up the help.
def create_project_file
template = TemplatePage.new(RDoc::Page::HPP_FILE)
values = { "title" => @options.title, "opname" => @op_name }
files = []
@files.each do |f|
files << { "html_file_name" => f.path }
end
values['all_html_files'] = files
File.open(@project_name, "w") do |f|
template.write_html_on(f, values)
end
end
# The contents is a list of all files and modules.
# For each we include as sub-entries the list
# of methods they contain. As we build the contents
# we also build an index file
def create_contents_and_index
contents = []
index = []
(@files+@classes).sort.each do |entry|
content_entry = { "c_name" => entry.name, "ref" => entry.path }
index << { "name" => entry.name, "aref" => entry.path }
internals = []
methods = entry.build_method_summary_list(entry.path)
content_entry["methods"] = methods unless methods.empty?
contents << content_entry
index.concat methods
end
values = { "contents" => contents }
template = TemplatePage.new(RDoc::Page::CONTENTS)
File.open("contents.hhc", "w") do |f|
template.write_html_on(f, values)
end
values = { "index" => index }
template = TemplatePage.new(RDoc::Page::CHM_INDEX)
File.open("index.hhk", "w") do |f|
template.write_html_on(f, values)
end
end
# Invoke the windows help compiler to compiler the project
def compile_project
system(HHC_PATH, @project_name)
end
end
end
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