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Diffstat (limited to 'etc/gemtext.lua')
| -rw-r--r-- | etc/gemtext.lua | 297 |
1 files changed, 0 insertions, 297 deletions
diff --git a/etc/gemtext.lua b/etc/gemtext.lua deleted file mode 100644 index 5fdff59..0000000 --- a/etc/gemtext.lua +++ /dev/null @@ -1,297 +0,0 @@ --- Invoke with: pandoc -t gemtext.lua - --- Tables to store links and footnotes, so they can be included correctly. -local links = {} -local notes = {} - --- Blocksep is used to separate block elements. -function Blocksep() - return "\n" -end - --- This function is called once for the whole document. Parameters: --- body is a string, metadata is a table, variables is a table. --- This gives you a fragment. You could use the metadata table to --- fill variables in a custom lua template. Or, pass `--template=...` --- to pandoc, and pandoc will do the template processing as usual. -function Doc(body, metadata, variables) - local buffer = {} - local function add(s) - table.insert(buffer, s) - end - add(body) - if #notes > 0 then - add('') - for _,note in pairs(notes) do - add(note) - end - end - return table.concat(buffer, '\n') -end - --- The functions that follow render corresponding pandoc elements. --- s is always a string, attr is always a table of attributes, and --- items is always an array of strings (the items in a list). --- Comments indicate the types of other variables. - -function Str(s) - return s -end - -function Space() - return " " -end - -function SoftBreak() - return " " -end - -function LineBreak() - return "\n" -end - -function Emph(s) - return "_" .. s .. "_" -end - -function Strong(s) - return "**" .. s .. "**" -end - -function Subscript(s) - return "_" .. s -end - -function Superscript(s) - return "^" .. s -end - -function SmallCaps(s) - return s -end - -function Strikeout(s) - return '~~' .. s .. '~~' -end - -function Link(s, tgt, tit, attr) - if tgt:match("%.html$") and not tgt:match("^https?://") then - tgt = tgt:gsub("%.html$", ".gmi") - end - table.insert(links, "=> " .. tgt .. " " .. s) - return s -end - -function Image(s, src, tit, attr) - table.insert(links, "=> " .. src .. " [IMG] " .. s) - return s -end - -function Code(s, attr) - return "`" .. s .. "`" -end - -function InlineMath(s) - return "\\(" .. s .. "\\)" -end - -function DisplayMath(s) - return "\\[" .. s .. "\\]" -end - -function SingleQuoted(s) - return "‘" .. s .. "’" -end - -function DoubleQuoted(s) - return "“" .. s .. "”" -end - -function Note(s) - local num = #notes + 1 - local num_fn = string.gsub(num, '0', '⁰') - :gsub('1', '¹') - :gsub('2', '²') - :gsub('3', '³') - :gsub('4', '⁴') - :gsub('5', '⁵') - :gsub('6', '⁶') - :gsub('7', '⁷') - :gsub('8', '⁸') - :gsub('9', '⁹') - -- add a list item with the note to the note table. - table.insert(notes, num_fn .. ' ' .. s) - -- return the footnote reference, linked to the note. - return num_fn -end - -function Span(s, attr) - return s -end - -function RawInline(format, str) - if format == "gemtext" then - return str - else - return '' - end -end - -function Cite(s, cs) - local ids = {} - for _,cit in ipairs(cs) do - table.insert(ids, cit.citationId) - end - return s .. ids:concat(",") -end - -function Plain(s) - return s -end - -function Para(s) - local finished = s .. "\n" - if #links > 0 then - local link_text = links[1]:match('=> [^ ]+ (.+)') - if link_text == s and #links == 1 then - finished = links[1] .. "\n" - else - finished = finished .. table.concat(links, "\n") .. "\n" - end - end - links = {} - return finished -end - --- lev is an integer, the header level. -function Header(lev, s, attr) - return string.rep("#", lev) .. " " .. s .. "\n" -end - -function BlockQuote(s) - return "> " .. s:gsub("\n", "\n> "):gsub("\n> $", "\n") -end - -function HorizontalRule() - return "-----\n" -end - -function LineBlock(ls) - return table.concat(ls, '\n') .. "\n" -end - -function CodeBlock(s, attr) - return "```\n" .. s .. "\n```\n" -end - -function BulletList(items) - local buffer = {} - for _, item in pairs(items) do - local finished = false - if #links > 0 then - local link_text = links[1]:match('=> [^ ]+ (.+)') - if link_text == item then - table.insert(buffer, links[1]) - table.remove(links, 1) - finished = true - end - end - if not finished then - table.insert(buffer, "* " .. item) - for _,link in pairs(links) do - table.insert(buffer, link) - end - links = {} - end - end - return table.concat(buffer, "\n") .. "\n" -end - -function OrderedList(items) - local buffer = {} - for i, item in pairs(items) do - table.insert(buffer, i .. ". " .. item) - end - return table.concat(buffer, "\n") .. "\n" -end - -function DefinitionList(items) - local buffer = {} - for _,item in pairs(items) do - local k, v = next(item) - table.insert(buffer, k .. ":\n" .. table.concat(v, "\n")) - end - return table.concat(buffer, "\n") .. "\n" -end - -function CaptionedImage(src, tit, caption, attr) - return '=> ' .. src .. ' [IMG] ' .. caption .. '\n' -end - --- Caption is a string, aligns is an array of strings, --- widths is an array of floats, headers is an array of --- strings, rows is an array of arrays of strings. -function Table(caption, aligns, widths, headers, rows) - local buffer = {} - local function add(s) - table.insert(buffer, s) - end - add("<table>") - if caption ~= "" then - add("<caption>" .. caption .. "</caption>") - end - if widths and widths[1] ~= 0 then - for _, w in pairs(widths) do - add('<col width="' .. string.format("%.0f%%", w * 100) .. '" />') - end - end - local header_row = {} - local empty_header = true - for i, h in pairs(headers) do - table.insert(header_row,'<th>' .. h .. '</th>') - empty_header = empty_header and h == "" - end - if empty_header then - head = "" - else - add('<tr class="header">') - for _,h in pairs(header_row) do - add(h) - end - add('</tr>') - end - local class = "even" - for _, row in pairs(rows) do - class = (class == "even" and "odd") or "even" - add('<tr class="' .. class .. '">') - for i,c in pairs(row) do - add('<td>' .. c .. '</td>') - end - add('</tr>') - end - add('</table>') - return table.concat(buffer,'\n') .. "\n" -end - -function RawBlock(format, str) - if format == "gemtext" then - return str - else - return '' - end -end - -function Div(s, attr) - return s -end - --- The following code will produce runtime warnings when you haven't defined --- all of the functions you need for the custom writer, so it's useful --- to include when you're working on a writer. -local meta = {} -meta.__index = - function(_, key) - io.stderr:write(string.format("WARNING: Undefined function '%s'\n",key)) - return function() return "" end - end -setmetatable(_G, meta) |