144 lines
4.4 KiB
Lua
144 lines
4.4 KiB
Lua
--------------
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-- Handling markup transformation.
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-- Currently just does Markdown, but this is intended to
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-- be the general module for managing other formats as well.
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require 'pl'
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local doc = require 'ldoc.doc'
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local utils = require 'pl.utils'
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local prettify = require 'ldoc.prettify'
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local quit, concat, lstrip = utils.quit, table.concat, stringx.lstrip
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local markup = {}
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-- workaround Markdown's need for blank lines around indented blocks
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-- (does mean you have to keep indentation discipline!)
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function markup.insert_markdown_lines (txt)
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local res, append = {}, table.insert
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local last_indent, start_indent, skip, code = -1, -1, false, nil
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for line in stringx.lines(txt) do
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line = line:gsub('\t',' ') -- some people like tabs ;)
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if not line:match '^%s*$' then --ignore blank lines
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local indent = #line:match '^%s*'
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if start_indent < 0 then -- initialize indents at start
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start_indent = indent
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last_indent = indent
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end
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if indent < start_indent then -- end of indented block
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append(res,'')
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skip = false
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if code then
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code = concat(code,'\n')
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code, err = prettify.lua(code)
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if code then
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append(res,code)
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append(res,'</pre>')
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end
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code = nil
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end
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end
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if not skip and indent > last_indent then -- start of indent
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append(res,'')
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skip = true
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start_indent = indent
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if indent >= 4 then
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code = {}
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end
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end
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if code then
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append(code, line:sub(start_indent))
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else
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append(res,line)
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end
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last_indent = indent
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elseif not code then
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append(res,'')
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end
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end
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res = concat(res,'\n')
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return res
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end
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-- for readme text, the idea here is to insert module sections at ## so that
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-- they can appear in the contents list as a ToC
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function markup.add_sections(F, txt)
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local res, append = {}, table.insert
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for line in stringx.lines(txt) do
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local title = line:match '^##[^#]%s*(.+)'
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if title then
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local section = F:add_document_section(title)
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append(res,('<a id="%s"></a>\n'):format(section))
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append(res,line)
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else
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append(res,line)
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end
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end
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return concat(res,'\n')
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end
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local function handle_reference (ldoc, name)
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local ref,err = markup.process_reference(name)
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if not ref then
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if ldoc.item then ldoc.item:warning(err)
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else
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io.stderr:write(err,'\n')
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end
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return ''
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end
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local label = ref.label
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if not ldoc.plain then -- a nastiness with markdown.lua and underscores
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label = label:gsub('_','\\_')
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end
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local res = ('<a href="%s">%s</a>'):format(ldoc.href(ref),label)
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return res
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end
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local ldoc_handle_reference
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-- inline <references> use same lookup as @see
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local function resolve_inline_references (ldoc, txt)
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return (txt:gsub('@{([%w_%.%-]-)}',ldoc_handle_reference))
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end
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function markup.create (ldoc, format)
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local processor
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ldoc_handle_reference = utils.bind1(handle_reference,ldoc)
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markup.plain = true
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markup.process_reference = function(name)
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local mod = ldoc.single or ldoc.module
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return mod:process_see_reference(name, ldoc.modules)
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end
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markup.href = function(ref)
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return ldoc.href(ref)
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end
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if format == 'plain' then
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processor = function(txt)
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if txt == nil then return '' end
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return resolve_inline_references(ldoc, txt)
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end
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else
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local ok,formatter = pcall(require,format)
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if not ok then quit("cannot load formatter: "..format) end
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markup.plain = false
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processor = function (txt)
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if txt == nil then return '' end
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txt = resolve_inline_references(ldoc, txt)
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if txt:find '\n' and ldoc.extended_markdown then -- multiline text
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txt = markup.insert_markdown_lines(txt)
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end
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txt = formatter (txt)
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-- We will add our own paragraph tags, if needed.
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return (txt:gsub('^%s*<p>(.+)</p>%s*$','%1'))
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end
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end
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markup.resolve_inline_references = function(txt)
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return resolve_inline_references(ldoc, txt)
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end
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markup.processor = processor
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prettify.resolve_inline_references = markup.resolve_inline_references
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return processor
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end
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return markup
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