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# This file is a part of Julia. License is MIT: http://julialang.org/license
include("rich.jl")
# Utils
function withtag(f, io::IO, tag, attrs...)
print(io, "<$tag")
for (attr, value) in attrs
print(io, " ")
htmlesc(io, attr)
print(io, "=\"")
htmlesc(io, value)
print(io, "\"")
end
f === nothing && return print(io, " />")
print(io, ">")
f()
print(io, "</$tag>")
end
tag(io::IO, tag, attrs...) = withtag(nothing, io, tag, attrs...)
const _htmlescape_chars = Dict('<'=>"<", '>'=>">",
'"'=>""", '&'=>"&",
# ' '=>" ",
)
for ch in "'`!@\$\%()=+{}[]"
_htmlescape_chars[ch] = "&#$(Int(ch));"
end
function htmlesc(io::IO, s::AbstractString)
# s1 = replace(s, r"&(?!(\w+|\#\d+);)", "&")
for ch in s
print(io, get(_htmlescape_chars, ch, ch))
end
end
function htmlesc(io::IO, s::Symbol)
htmlesc(io, string(s))
end
function htmlesc(io::IO, xs::Union{AbstractString, Symbol}...)
for s in xs
htmlesc(io, s)
end
end
function htmlesc(s::Union{AbstractString, Symbol})
sprint(htmlesc, s)
end
# Block elements
function html(io::IO, content::Vector)
for md in content
html(io, md)
println(io)
end
end
html(io::IO, md::MD) = html(io, md.content)
function html{l}(io::IO, header::Header{l})
withtag(io, "h$l") do
htmlinline(io, header.text)
end
end
function html(io::IO, code::Code)
withtag(io, :pre) do
maybe_lang = code.language != "" ? Any[:class=>"language-$(code.language)"] : []
withtag(io, :code, maybe_lang...) do
htmlesc(io, code.code)
# TODO should print newline if this is longer than one line ?
end
end
end
function html(io::IO, md::Paragraph)
withtag(io, :p) do
htmlinline(io, md.content)
end
end
function html(io::IO, md::BlockQuote)
withtag(io, :blockquote) do
println(io)
html(io, md.content)
end
end
function html(io::IO, md::List)
withtag(io, md.ordered ? :ol : :ul) do
for item in md.items
println(io)
withtag(io, :li) do
htmlinline(io, item)
end
end
println(io)
end
end
function html(io::IO, md::HorizontalRule)
tag(io, :hr)
end
html(io::IO, x) = tohtml(io, x)
# Inline elements
function htmlinline(io::IO, content::Vector)
for x in content
htmlinline(io, x)
end
end
function htmlinline(io::IO, code::Code)
withtag(io, :code) do
htmlesc(io, code.code)
end
end
function htmlinline(io::IO, md::Union{Symbol, AbstractString})
htmlesc(io, md)
end
function htmlinline(io::IO, md::Bold)
withtag(io, :strong) do
htmlinline(io, md.text)
end
end
function htmlinline(io::IO, md::Italic)
withtag(io, :em) do
htmlinline(io, md.text)
end
end
function htmlinline(io::IO, md::Image)
tag(io, :img, :src=>md.url, :alt=>md.alt)
end
function htmlinline(io::IO, link::Link)
withtag(io, :a, :href=>link.url) do
htmlinline(io, link.text)
end
end
function htmlinline(io::IO, br::LineBreak)
tag(io, :br)
end
htmlinline(io::IO, x) = tohtml(io, x)
# API
export html
html(md) = sprint(html, md)
function writemime(io::IO, ::MIME"text/html", md::MD)
withtag(io, :div, :class=>"markdown") do
html(io, md)
end
end
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