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Contents
require 'jsduck/util/html'
require 'jsduck/logger'
require 'ostruct'
module JsDuck
module Inline
# Implementation of inline tag {@img}
class Img
# Instance of Img::Dir or Img::DirSet that's used for looking up
# image information.
attr_accessor :images
# Sets up instance to work in context of particular doc object.
# Used for error reporting.
attr_accessor :doc_context
def initialize(opts=OpenStruct.new)
@tpl = opts.img || '<img src="%u" alt="%a" width="%w" height="%h"/>'
@re = /\{@img\s+(\S*?)(?:\s+(.+?))?\}/m
end
# Takes StringScanner instance.
#
# Looks for inline tag at the current scan pointer position, when
# found, moves scan pointer forward and performs the apporpriate
# replacement.
def replace(input)
if input.check(@re)
input.scan(@re).sub(@re) { apply_tpl($1, $2) }
else
false
end
end
# applies the image template
def apply_tpl(url, alt_text)
img = @images.get(url)
if !img
Logger.warn(:image, "Image #{url} not found.", @doc_context)
img = {}
end
@tpl.gsub(/(%\w)/) do
case $1
when '%u'
img[:relative_path]
when '%a'
Util::HTML.escape(alt_text||"")
when '%w'
img[:width]
when '%h'
img[:height]
else
$1
end
end
end
end
end
end
Version data entries
16 entries across 16 versions & 3 rubygems