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|
fns = {
fail = function(self, msg, ...)
ct.exns.tx(msg, self.src.file, self.line or 0, ...):throw()
end;
insert = function(self, block)
block.origin = self:clone()
table.insert(self.sec.blocks,block)
end;
ref = function(self,id)
if not id:find'%.' then
local rid = self.sec.refs[id]
if self.sec.refs[id] then
return self.sec.refs[id]
else self:fail("no such ref %s in current section", id or '') end
................................................................................
fns = {
mksec = function(self, id, depth)
local o = ct.sec(id, depth)
if id then self.sections[id] = o end
table.insert(self.secorder, o)
return o
end;
context_var = function(self, var, ctx, test)
local fail = function(...)
if test then return false end
ctx:fail(...)
end
if startswith(var, 'cortav.') then
local v = var:sub(8)
................................................................................
elseif self.vars[var] then
return self.vars[var]
else
if test then return false end
return '' -- is this desirable behavior?
end
end;
};
mk = function() return {
sections = {};
secorder = {};
embed = {};
meta = {};
vars = {};
} end;
}
-- FP helper functions
local function fmtfn(str)
return function(...)
return string.format(str, ...)
................................................................................
ct.exns.ext 'extension missing “id” field':throw()
end
if ct.ext.loaded[ext.id] then
ct.exns.ext('there is already an extension with ID “%s” loaded', ext.id):throw()
end
ct.ext.loaded[ext.id] = ext
end
-- renderer engines
function ct.render.html(doc, opts)
local doctitle = opts['title']
local f = string.format
local ids = {}
local canonicalID = {}
................................................................................
}
section > figure.listing > hr {
border: none;
margin: 0;
height: 0.7em;
counter-increment: line-number;
}
]];
toc = [[
]];
tocFixed = [[
@media (min-width: calc(@[width]:[100vw] + 20em)) {
ol.toc {
position: fixed;
padding-top: 1em; padding-bottom: 1em;
padding-right: 1em;
margin-top: 0; margin-bottom: 0;
right: 0; top: 0; bottom: 0;
max-width: calc(50vw - ((@[width]:[0]) / 2) - 3.5em);
overflow-y: auto;
}
@media (max-width: calc(@[width]:[100vw] + 30em)) {
ol.toc {
max-width: calc(100vw - ((@[width]:[0])) - 9.5em);
}
body {
margin-left: 5em;
}
}
}
]];
}
local stylesNeeded = {}
local function getSpanRenderers(tag,elt)
local htmlDoc = function(title, head, body)
return [[<!doctype html>]] .. tag('html',nil,
tag('head', nil,
elt('meta',{charset = 'utf-8'}) ..
(title and tag('title', nil, title) or '') ..
(head or '')) ..
tag('body', nil, body or ''))
................................................................................
function span_renderers.var(v,b,s)
local val
if v.pos then
if not v.origin.invocation then
v.origin:fail 'positional arguments can only be used in a macro invocation'
elseif not v.origin.invocation.args[v.pos] then
v.origin:fail('macro invocation %s missing positional argument #%u', v.origin.invocation.macro, v.pos)
end
val = v.origin.invocation.args[v.pos]
else
val = v.origin.doc:context_var(v.var, v.origin)
end
if v.raw then
return val
................................................................................
span_renderers = span_renderers;
htmlSpan = htmlSpan;
htmlDoc = htmlDoc;
}
end
local function getBlockRenderers(tag,elt,sr,catenate)
local function insert_toc(b,s)
local lst = {tag = 'ol', attrs={class='toc'}, nodes={}}
stylesNeeded.toc = true
if opts['width'] then
stylesNeeded.tocFixed = true
end
local stack = {lst}
local top = function() return stack[#stack] end
local all = s.origin.doc.secorder
for i, sec in ipairs(all) do
if sec.heading_node then
local ent = tag('li',nil,
catenate{tag('a', {href='#'..getSafeID(sec)},
sr.htmlSpan(sec.heading_node.spans))})
if sec.depth > #stack then
local n = {tag = 'ol', attrs={}, nodes={ent}}
table.insert(top().nodes[#top().nodes].nodes, n)
table.insert(stack, n)
else
if sec.depth < #stack then
for j=#stack,sec.depth+1,-1 do stack[j] = nil end
end
table.insert(top().nodes, ent)
end
end
end
return lst
end
local block_renderers = {
paragraph = function(b,s)
stylesNeeded.paragraph = true;
return tag('p', nil, sr.htmlSpan(b.spans, b, s), b)
end;
directive = function(b,s)
-- deal with renderer directives
local _, cmd, args = b.words(2)
................................................................................
else
-- handle other uses of labels here
end
end;
['list-item'] = function(b,s)
return tag('li', nil, sr.htmlSpan(b.spans, b, s), b)
end;
toc = insert_toc;
table = function(b,s)
local tb = {}
for i, r in ipairs(b.rows) do
local row = {}
for i, c in ipairs(r) do
table.insert(row, tag(c.header and 'th' or 'td',
{align=c.align}, sr.htmlSpan(c.spans, b)))
................................................................................
end, b.lines)
if b.title then
table.insert(nodes,1,tag('figcaption',nil,sr.htmlSpan(b.title)))
end
if b.lang then langsused[b.lang] = true end
return tag('figure', {class='listing', lang=b.lang, id=b.id and getSafeID(b)}, catenate(nodes))
end;
['break'] = function() --[[nop]] end;
}
return block_renderers;
end
local pspan = getSpanRenderers(function(t,a,v) return v end,
function(t,a) return '' end)
local function getRenderers(tag,elt,catenate)
local r = getSpanRenderers(tag,elt)
r.block_renderers = getBlockRenderers(tag,elt,r,catenate)
return r
end
local elt = function(t,attrs)
return f('<%s%s>', t,
attrs and ss.reduce(function(a,b) return a..b end, '',
ss.map(function(v,k)
if v == true
then return ' '..k
elseif v then return f(' %s="%s"', k, v)
end
end, attrs)) or '')
end
local tag = function(t,attrs,body)
return f('%s%s</%s>', elt(t,attrs), body, t)
end
local ir = {}
local toc
local dr = getRenderers(tag,elt,table.concat) -- default renderers
local plainr = getRenderers(function(t,a,v) return v end,
function(t,a) return '' end, table.concat)
local irBlockRdrs = getBlockRenderers(
function(t,a,v,o) return {tag = t, attrs = a, nodes = type(v) == 'string' and {v} or v, src = o} end,
function(t,a,o) return {tag = t, attrs = a, src = o} end,
dr, function(...) return ... end)
for i, sec in ipairs(doc.secorder) do
if doctitle == nil and sec.depth == 1 and sec.heading_node then
doctitle = plainr.htmlSpan(sec.heading_node.spans, sec.heading_node, sec)
end
local irs
if sec.kind == 'ordinary' then
if #(sec.blocks) > 0 then
irs = {tag='section',attrs={id = getSafeID(sec)},nodes={}}
for i, block in ipairs(sec.blocks) do
local rd = irBlockRdrs[block.kind](block,sec)
if rd then
if opts['heading-anchors'] and block == sec.heading_node then
stylesNeeded.headingAnchors = true
table.insert(rd.nodes, ' ')
table.insert(rd.nodes, {
tag = 'a';
attrs = {href = '#' .. irs.attrs.id, class='anchor'};
nodes = {type(opts['heading-anchors'])=='string' and opts['heading-anchors'] or '§'};
})
end
table.insert(irs.nodes, rd)
end
end
end
elseif sec.kind == 'blockquote' then
elseif sec.kind == 'listing' then
elseif sec.kind == 'embed' then
end
if irs then table.insert(ir, irs) end
end
-- restructure passes
---- list insertion pass
local lists = {}
for _, sec in pairs(ir) do
if sec.tag == 'section' then
local i = 1 while i <= #sec.nodes do local v = sec.nodes[i]
if v.tag == 'li' then
................................................................................
sec.nodes[i] = struc
end
end
end
end
-- collection pass
local function collect_nodes(t)
local ts = ''
for i,v in ipairs(t) do
if type(v) == 'string' then
ts = ts .. v
elseif v.nodes then
ts = ts .. tag(v.tag, v.attrs, collect_nodes(v.nodes))
elseif v.text then
ts = ts .. tag(v.tag,v.attrs,v.text)
else
ts = ts .. elt(v.tag,v.attrs)
end
end
return ts
end
local body = collect_nodes(ir)
for k in pairs(langsused) do
................................................................................
end
local head = {}
local styletag = ''
if opts['link-css'] then
local css = opts['link-css']
if type(css) ~= 'string' then ct.exns.mode('must be a string', 'html:link-css'):throw() end
styletag = styletag .. elt('link',{rel='stylesheet',type='text/css',href=opts['link-css']})
end
if next(styles) then
if opts['gen-styles'] then
styletag = styletag .. tag('style',{type='text/css'},table.concat(styles))
end
table.insert(head, styletag)
end
if opts['fossil-uv'] then
return tag('div',{class='fossil-doc',['data-title']=doctitle},styletag .. body)
elseif opts.snippet then
return styletag .. body
else
return dr.htmlDoc(doctitle, next(head) and table.concat(head), body)
end
end
................................................................................
end
flush()
return spans
end
local function
blockwrap(fn)
return function(l,c)
local block = fn(l,c)
block.origin = c:clone();
table.insert(c.sec.blocks, block);
end
end
local insert_paragraph = blockwrap(function(l,c)
if l:sub(1,1) == '.' then l = l:sub(2) end
return {
kind = "paragraph";
spans = ct.parse_span(l, c);
}
end)
local insert_section = function(l,c)
local depth, id, t = l:match '^([#§]+)([^%s]*)%s*(.-)$'
if id and id ~= "" then
if c.doc.sections[id] then
c:fail('duplicate section name “%s”', id)
end
else id = nil end
................................................................................
origin = s.origin;
captions = s;
}
table.insert(s.blocks, heading)
s.heading_node = heading
end
c.sec = s
end
local dsetmeta = function(w,c)
local key, val = w(1)
c.doc.meta[key] = val
end
local dextctl = function(w,c)
local mode, exts = w(1)
for e in exts:gmatch '([^%s]+)' do
if mode == 'uses' then
elseif mode == 'needs' then
elseif mode == 'inhibits' then
................................................................................
c.hide_next = mode == 'unless'
end;
ct.directives = {
author = dsetmeta;
license = dsetmeta;
keywords = dsetmeta;
desc = dsetmeta;
toc = function(w,c)
local toc, op, val = w(2)
if op == nil then
table.insert(c.sec.blocks, {kind='toc'})
end
end;
when = dcond;
unless = dcond;
expand = function(w,c)
local _, m = w(1)
if m ~= 'off' then
c.expand_next = 1
else
c.expand_next = 0
end
end;
}
local function insert_table_row(l,c)
local row = {}
local buf
local flush = function()
if buf then
buf.str = buf.str:gsub('%s+$','')
table.insert(row, buf)
end
................................................................................
if buf.str ~= '' then flush() end
for _,v in pairs(row) do
v.spans = ct.parse_span(v.str, c)
end
if #c.sec.blocks > 1 and c.sec.blocks[#c.sec.blocks].kind == 'table' then
local tbl = c.sec.blocks[#c.sec.blocks]
table.insert(tbl.rows, row)
else
table.insert(c.sec.blocks, {
kind = 'table';
rows = {row};
origin = c:clone();
})
end
end
ct.ctlseqs = {
{seq = '.', fn = insert_paragraph};
{seq = '¶', fn = insert_paragraph};
{seq = '❡', fn = insert_paragraph};
{seq = '#', fn = insert_section};
{seq = '§', fn = insert_section};
{seq = '+', fn = insert_table_row};
{seq = '|', fn = insert_table_row};
{seq = '│', fn = insert_table_row};
{pred = function(s,c) return s:match'^[*:]' end, fn = blockwrap(function(l,c) -- list
local stars = l:match '^([*:]+)'
local depth = utf8.len(stars)
local id, txt = l:sub(#stars+1):match '^(.-)%s*(.-)$'
local ordered = stars:sub(#stars) == ':'
if id == '' then id = nil end
return {
kind = 'list-item';
depth = depth;
ordered = ordered;
spans = ct.parse_span(txt, c);
}
end)};
{seq = '\t', fn = function(l,c)
local ref, val = l:match '\t+([^:]+):%s*(.*)$'
c.sec.refs[ref] = val
end};
{seq = '%', fn = function(l,c) -- directive
local crit, cmdline = l:match '^%%([!%%]?)%s*(.*)$'
local words = function(i)
local wds = {}
if i == 0 then return cmdline end
for w,pos in cmdline:gmatch '([^%s]+)()' do
table.insert(wds, w)
i = i - 1
................................................................................
return table.unpack(wds)
end
end
end
local cmd, rest = words(1)
if ct.directives[cmd] then
ct.directives[cmd](words,c)
elseif cmd == c.doc.stage.mode['render:format'] then
-- this is a directive for the renderer; insert it into the tree as is
c:insert {
kind = 'directive';
critical = crit == '!';
words = words;
}
elseif crit == '!' then
c:fail('critical directive %s not supported',cmd)
end
end;};
{seq = '~~~', fn = blockwrap(function(l,c)
local extract = function(ptn, str)
local start, stop = str:find(ptn)
if not start then return nil, str end
local ex = str:sub(start,stop)
local n = str:sub(1,start-1) .. str:sub(stop+1)
return ex, n
end
................................................................................
lang, s = extract('%b[]', s)
if lang then lang = lang:sub(2,-2) end
id, title = extract('#[^%s]+', s)
if id then id = id:sub(2) end
elseif l:match '^~~~' then -- MD shorthand style
lang = l:match '^~~~%s*(.-)%s*$'
end
c.mode = {
kind = 'code';
listing = {
kind = 'listing';
lang = lang, id = id, title = title and ct.parse_span(title,c);
lines = {};
}
}
if id then
if c.sec.refs[id] then c:fail('duplicate ID %s', id) end
c.sec.refs[id] = c.mode.listing
end
return c.mode.listing;
end)};
{pred = function(s,c)
if s:match '^[%-_][*_%-%s]+' then return true end
if startswith(s, '—') then
for c, p in eachcode(s) do
if ({
................................................................................
end)};
{fn = insert_paragraph};
}
function ct.parse(file, src, mode)
local function
is_whitespace(cp)
return cp == 0x20
end
local ctx = ct.ctx.mk(src)
ctx.line = 0
ctx.doc = ct.doc.mk()
ctx.doc.src = src
ctx.doc.stage = {
kind = 'parse';
mode = mode;
}
ctx.sec = ctx.doc:mksec() -- toplevel section
ctx.sec.origin = ctx:clone()
for full_line in file:lines() do ctx.line = ctx.line + 1
local l
for p, c in utf8.codes(full_line) do
if not is_whitespace(c) then
l = full_line:sub(p)
break
end
end
if ctx.mode then
if ctx.mode.kind == 'code' then
if l and l:match '^~~~%s*$' then
ctx.mode = nil
else
-- TODO handle formatted code
table.insert(ctx.mode.listing.lines, {l})
end
else
ctx:fail('unimplemented syntax mode %s', ctx.mode.kind)
end
else
if l then
local found = false
for _, i in pairs(ct.ctlseqs) do
if ((not i.seq ) or startswith(l, i.seq)) and
((not i.pred) or i.pred (l, ctx )) then
found = true
i.fn(l, ctx)
break
end
end
if not found then
ctx:fail 'incomprehensible input line'
end
else
if next(ctx.sec.blocks) and ctx.sec.blocks[#ctx.sec.blocks].kind ~= 'break' then
table.insert(ctx.sec.blocks, {kind='break'})
end
end
end
end
return ctx.doc
end
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fns = {
fail = function(self, msg, ...)
ct.exns.tx(msg, self.src.file, self.line or 0, ...):throw()
end;
insert = function(self, block)
block.origin = self:clone()
table.insert(self.sec.blocks,block)
return block
end;
ref = function(self,id)
if not id:find'%.' then
local rid = self.sec.refs[id]
if self.sec.refs[id] then
return self.sec.refs[id]
else self:fail("no such ref %s in current section", id or '') end
................................................................................
fns = {
mksec = function(self, id, depth)
local o = ct.sec(id, depth)
if id then self.sections[id] = o end
table.insert(self.secorder, o)
return o
end;
allow_ext = function(self,name)
if not ct.ext.loaded[name] then return false end
if self.ext.inhibit[name] then return false end
if self.ext.need[name] or self.ext.use[name] then
return true
end
return ct.ext.loaded[name].default
end;
context_var = function(self, var, ctx, test)
local fail = function(...)
if test then return false end
ctx:fail(...)
end
if startswith(var, 'cortav.') then
local v = var:sub(8)
................................................................................
elseif self.vars[var] then
return self.vars[var]
else
if test then return false end
return '' -- is this desirable behavior?
end
end;
job = function(self, name, pred, ...) -- convenience func
return self.docjob:fork(name, pred, ...)
end
};
mk = function() return {
sections = {};
secorder = {};
embed = {};
meta = {};
vars = {};
ext = {
inhibit = {};
need = {};
use = {};
};
} end;
construct = function(me)
me.docjob = ct.ext.job('doc', me, nil)
end;
}
-- FP helper functions
local function fmtfn(str)
return function(...)
return string.format(str, ...)
................................................................................
ct.exns.ext 'extension missing “id” field':throw()
end
if ct.ext.loaded[ext.id] then
ct.exns.ext('there is already an extension with ID “%s” loaded', ext.id):throw()
end
ct.ext.loaded[ext.id] = ext
end
function ct.ext.bind(doc)
local fns = {}
function fns.each(...)
local cext
local args = {...}
return function()
while true do
cext = next(ct.ext.loaded, cext)
if cext == nil then return nil end
if doc == nil or doc:allow_ext(cext.id) then
local v = ss.walk(ct.ext.loaded[cext.id], table.unpack(args))
if v ~= nil then
return v, cext
end
end
end
end
end
function fns.hook(h, ...)
-- this is the raw hook invocation function, used when hooks won't need
-- private state to hold onto between invocation. if private state is
-- necessary, construct a job instead
local ret = {} -- for hooks that compile lists of responses from extensions
for hook in fns.each('hook', h) do table.insert(ret,(hook(...))) end
return ret
end
return fns
end
do local globalfns = ct.ext.bind()
-- use these functions when document restrictions don't matter
ct.ext.each, ct.ext.hook = globalfns.each, globalfns.hook
end
ct.ext.job = declare {
ident = 'ext-job';
init = {
states = {};
};
construct = function(me,name,doc,pred,...)
print('constructing job',name,'for',doc)
-- prepare contexts for relevant extensions
me.name = name
me.doc = doc -- for reqs + limiting
for _, ext in pairs(ct.ext.loaded) do
if pred == nil or pred(ext) then
me.states[ext] = {}
end
end
me:hook('init', ...)
end;
fns = {
fork = function(me, name, pred, ...)
-- generate a branch job linked to this job
local branch = getmetatable(me)(name, me.doc, pred, ...)
branch.parent = me
return branch
end;
delegate = function(me, ext) -- creates a delegate for state access
local submethods = {
unwind = function(self, n)
local function
climb(dlg, job, n)
if n == 0 then
return job:delegate(dlg.extension)
else
return climb(dlg, job.parent, n-1)
end
end
return climb(self._delegate_state, self._delegate_state.target, n)
end;
}
local d = setmetatable({
_delegate_state = {
target = (me._delegate_state and me._delegate_state.target) or me;
extension = ext;
};
}, {
__name = 'job:delegate';
__index = function(self, key)
local D = self._delegate_state
if key == 'state' then
return D.target.states[self._delegate_state.extension]
elseif submethods[key] then
return submethods[key]
end
return D.target[key]
end;
__newindex = function(self, key, value)
local D = self._delegate_state
if key == 'state' then
D.target.states[D.extension] = value
else
D.target[D.extension] = value
end
end;
});
return d;
end;
each = function(me, ...)
local ek
local path = {...}
return function()
while true do
ek = next(me.states, ek)
if not ek then return nil end
if me.doc:allow_ext(ek.id) then
local v = ss.walk(ek, table.unpack(path))
if v then
return v, ek, me.states[ek]
end
end
end
end
end;
proc = function(me, ...)
local p
local owner
local state
for func, ext, s in me:each(...) do
if p == nil then
p = func
owner = ext
state = s
else
ct.exn.ext('extensions %s and %s define conflicting procedures for %s', owner.id, ext.id, table.concat({...},'.')):throw()
end
end
if p == nil then return nil end
if type(p) ~= 'function' then return p end
return function(...)
return p(me:delegate(owner), ...)
end, owner, state
end;
hook = function(me, hook, ...)
-- used when extensions may need to persist state across
-- multiple functions or invocations
local ret = {}
local hook_id = me.name ..'_'.. hook
for hookfn, ext, state in me:each('hook', hook_id) do
print(' - running hook for ext',ext.id)
table.insert(ret, (hookfn(me:delegate(ext),...)))
end
return ret
end;
};
}
-- renderer engines
function ct.render.html(doc, opts)
local doctitle = opts['title']
local f = string.format
local ids = {}
local canonicalID = {}
................................................................................
}
section > figure.listing > hr {
border: none;
margin: 0;
height: 0.7em;
counter-increment: line-number;
}
]];
}
local stylesNeeded = {}
local render_state_handle = {
doc = doc;
opts = opts;
style_rules = styles; -- use stylesneeded if at all possible
stylesets = stylesets;
stylesets_active = stylesNeeded;
obj_htmlid = getSafeID;
-- remaining fields added later
}
local renderJob = doc:job('render_html', nil, render_state_handle)
local runhook = function(h, ...)
return renderJob:hook(h, render_state_handle, ...)
end
local function getSpanRenderers(procs)
local tag, elt, catenate = procs.tag, procs.elt, procs.catenate
local htmlDoc = function(title, head, body)
return [[<!doctype html>]] .. tag('html',nil,
tag('head', nil,
elt('meta',{charset = 'utf-8'}) ..
(title and tag('title', nil, title) or '') ..
(head or '')) ..
tag('body', nil, body or ''))
................................................................................
function span_renderers.var(v,b,s)
local val
if v.pos then
if not v.origin.invocation then
v.origin:fail 'positional arguments can only be used in a macro invocation'
elseif not v.origin.invocation.args[v.pos] then
v.origin.invocation.origin:fail('macro invocation %s missing positional argument #%u', v.origin.invocation.macro, v.pos)
end
val = v.origin.invocation.args[v.pos]
else
val = v.origin.doc:context_var(v.var, v.origin)
end
if v.raw then
return val
................................................................................
span_renderers = span_renderers;
htmlSpan = htmlSpan;
htmlDoc = htmlDoc;
}
end
local function getBlockRenderers(procs, sr)
local tag, elt, catenate = procs.tag, procs.elt, procs.catenate
local null = function() return catenate{} end
local block_renderers = {
anchor = function(b,s)
return tag('a',{id = getSafeID(b)},null())
end;
paragraph = function(b,s)
stylesNeeded.paragraph = true;
return tag('p', nil, sr.htmlSpan(b.spans, b, s), b)
end;
directive = function(b,s)
-- deal with renderer directives
local _, cmd, args = b.words(2)
................................................................................
else
-- handle other uses of labels here
end
end;
['list-item'] = function(b,s)
return tag('li', nil, sr.htmlSpan(b.spans, b, s), b)
end;
table = function(b,s)
local tb = {}
for i, r in ipairs(b.rows) do
local row = {}
for i, c in ipairs(r) do
table.insert(row, tag(c.header and 'th' or 'td',
{align=c.align}, sr.htmlSpan(c.spans, b)))
................................................................................
end, b.lines)
if b.title then
table.insert(nodes,1,tag('figcaption',nil,sr.htmlSpan(b.title)))
end
if b.lang then langsused[b.lang] = true end
return tag('figure', {class='listing', lang=b.lang, id=b.id and getSafeID(b)}, catenate(nodes))
end;
aside = function(b,s)
local bn = {}
for _,v in pairs(b.lines) do
table.insert(bn, tag('p', {}, sr.htmlSpan(v, b, s)))
end
return tag('aside', {}, bn)
end;
['break'] = function() --[[nop]] end;
}
return block_renderers;
end
local function getRenderers(procs)
local r = getSpanRenderers(procs)
r.block_renderers = getBlockRenderers(procs, r)
return r
end
local tagproc do
local elt = function(t,attrs)
return f('<%s%s>', t,
attrs and ss.reduce(function(a,b) return a..b end, '',
ss.map(function(v,k)
if v == true
then return ' '..k
elseif v then return f(' %s="%s"', k, v)
end
end, attrs)) or '')
end
tagproc = {
toTXT = {
tag = function(t,a,v) return v end;
elt = function(t,a) return '' end;
catenate = table.concat;
};
toIR = {
tag = function(t,a,v,o) return {
tag = t, attrs = a;
nodes = type(v) == 'string' and {v} or v, src = o
} end;
elt = function(t,a,o) return {
tag = t, attrs = a, src = o
} end;
catenate = function(...) return ... end;
};
toHTML = {
elt = elt;
tag = function(t,attrs,body)
return f('%s%s</%s>', elt(t,attrs), body, t)
end;
catenate = table.concat;
};
}
end
local astproc = {
toHTML = getRenderers(tagproc.toHTML);
toTXT = getRenderers(tagproc.toTXT);
toIR = { };
}
astproc.toIR.span_renderers = ss.clone(astproc.toHTML);
astproc.toIR.block_renderers = getBlockRenderers(tagproc.toIR,astproc.toHTML);
-- note we use HTML here instead of IR span renderers, because as things
-- currently stand we don't need that level of resolution. if we ever
-- get to the point where we want to be able to twiddle spans around
-- we'll need to introduce an IR span renderer
render_state_handle.astproc = astproc;
render_state_handle.tagproc = tagproc;
-- bind to legacy names
-- yikes this needs to be cleaned up so badly
local ir = {}
local dr = astproc.toHTML -- default renderers
local plainr = astproc.toTXT
local irBlockRdrs = astproc.toIR.block_renderers;
render_state_handle.ir = ir;
runhook('ir_assemble', ir)
for i, sec in ipairs(doc.secorder) do
if doctitle == nil and sec.depth == 1 and sec.heading_node then
doctitle = astproc.toTXT.htmlSpan(sec.heading_node.spans, sec.heading_node, sec)
end
local irs
if sec.kind == 'ordinary' then
if #(sec.blocks) > 0 then
irs = {tag='section',attrs={id = getSafeID(sec)},nodes={}}
runhook('ir_section_build', irs, sec)
for i, block in ipairs(sec.blocks) do
local rd
if irBlockRdrs[block.kind] then
rd = irBlockRdrs[block.kind](block,sec)
else
local rdr = renderJob:proc('render',block.kind,'html')
if rdr then
rd = rdr({
state = render_state_handle;
tagproc = tagproc.toIR;
astproc = astproc.toIR;
}, block, sec)
end
end
if rd then
if opts['heading-anchors'] and block == sec.heading_node then
stylesNeeded.headingAnchors = true
table.insert(rd.nodes, ' ')
table.insert(rd.nodes, {
tag = 'a';
attrs = {href = '#' .. irs.attrs.id, class='anchor'};
nodes = {type(opts['heading-anchors'])=='string' and opts['heading-anchors'] or '§'};
})
end
table.insert(irs.nodes, rd)
runhook('ir_section_node_insert', rd, irs, sec)
end
end
end
elseif sec.kind == 'blockquote' then
elseif sec.kind == 'listing' then
elseif sec.kind == 'embed' then
end
if irs then table.insert(ir, irs) end
end
-- restructure passes
runhook('ir_restructure_pre', ir)
---- list insertion pass
local lists = {}
for _, sec in pairs(ir) do
if sec.tag == 'section' then
local i = 1 while i <= #sec.nodes do local v = sec.nodes[i]
if v.tag == 'li' then
................................................................................
sec.nodes[i] = struc
end
end
end
end
runhook('ir_restructure_post', ir)
-- collection pass
local function collect_nodes(t)
local ts = ''
for i,v in ipairs(t) do
if type(v) == 'string' then
ts = ts .. v
elseif v.nodes then
ts = ts .. tagproc.toHTML.tag(v.tag, v.attrs, collect_nodes(v.nodes))
elseif v.text then
ts = ts .. tagproc.toHTML.tag(v.tag,v.attrs,v.text)
else
ts = ts .. tagproc.toHTML.elt(v.tag,v.attrs)
end
end
return ts
end
local body = collect_nodes(ir)
for k in pairs(langsused) do
................................................................................
end
local head = {}
local styletag = ''
if opts['link-css'] then
local css = opts['link-css']
if type(css) ~= 'string' then ct.exns.mode('must be a string', 'html:link-css'):throw() end
styletag = styletag .. tagproc.toHTML.elt('link',{rel='stylesheet',type='text/css',href=opts['link-css']})
end
if next(styles) then
if opts['gen-styles'] then
styletag = styletag .. tagproc.toHTML.tag('style',{type='text/css'},table.concat(styles))
end
table.insert(head, styletag)
end
if opts['fossil-uv'] then
return tagproc.toHTML.tag('div',{class='fossil-doc',['data-title']=doctitle},styletag .. body)
elseif opts.snippet then
return styletag .. body
else
return dr.htmlDoc(doctitle, next(head) and table.concat(head), body)
end
end
................................................................................
end
flush()
return spans
end
local function
blockwrap(fn)
return function(l,c,j)
local block = fn(l,c,j)
block.origin = c:clone();
table.insert(c.sec.blocks, block);
j:hook('block_insert', c, block, l)
end
end
local insert_paragraph = blockwrap(function(l,c)
if l:sub(1,1) == '.' then l = l:sub(2) end
return {
kind = "paragraph";
spans = ct.parse_span(l, c);
}
end)
local insert_section = function(l,c,j)
local depth, id, t = l:match '^([#§]+)([^%s]*)%s*(.-)$'
if id and id ~= "" then
if c.doc.sections[id] then
c:fail('duplicate section name “%s”', id)
end
else id = nil end
................................................................................
origin = s.origin;
captions = s;
}
table.insert(s.blocks, heading)
s.heading_node = heading
end
c.sec = s
j:hook('section_attach', c, s)
end
local dsetmeta = function(w,c,j)
local key, val = w(1)
c.doc.meta[key] = val
j:hook('metadata_set', key, val)
end
local dextctl = function(w,c)
local mode, exts = w(1)
for e in exts:gmatch '([^%s]+)' do
if mode == 'uses' then
elseif mode == 'needs' then
elseif mode == 'inhibits' then
................................................................................
c.hide_next = mode == 'unless'
end;
ct.directives = {
author = dsetmeta;
license = dsetmeta;
keywords = dsetmeta;
desc = dsetmeta;
when = dcond;
unless = dcond;
expand = function(w,c)
local _, m = w(1)
if m ~= 'off' then
c.expand_next = 1
else
c.expand_next = 0
end
end;
}
local function insert_table_row(l,c,j)
local row = {}
local buf
local flush = function()
if buf then
buf.str = buf.str:gsub('%s+$','')
table.insert(row, buf)
end
................................................................................
if buf.str ~= '' then flush() end
for _,v in pairs(row) do
v.spans = ct.parse_span(v.str, c)
end
if #c.sec.blocks > 1 and c.sec.blocks[#c.sec.blocks].kind == 'table' then
local tbl = c.sec.blocks[#c.sec.blocks]
table.insert(tbl.rows, row)
j:hook('block_table_attach', c, tbl, row, l)
j:hook('block_table_row_insert', c, tbl, row, l)
else
local tbl = {
kind = 'table';
rows = {row};
origin = c:clone();
}
table.insert(c.sec.blocks, tbl)
j:hook('block_table_insert', c, tbl, l)
j:hook('block_table_row_insert', c, tbl, tbl.rows[1], l)
end
end
ct.ctlseqs = {
{seq = '.', fn = insert_paragraph};
{seq = '¶', fn = insert_paragraph};
{seq = '❡', fn = insert_paragraph};
{seq = '#', fn = insert_section};
{seq = '§', fn = insert_section};
{seq = '+', fn = insert_table_row};
{seq = '|', fn = insert_table_row};
{seq = '│', fn = insert_table_row};
{seq = '!', fn = function(l,c,j)
local last = c.sec.blocks[#c.sec.blocks]
local txt = l:match '^%s*!%s*(.-)$'
if (not last) or last.kind ~= 'aside' then
local aside = {
kind = 'aside';
lines = { ct.parse_span(txt, c) }
}
c:insert(aside)
j:hook('block_aside_insert', c, aside, l)
j:hook('block_aside_line_insert', c, aside, aside.lines[1], l)
j:hook('block_insert', c, aside, l)
else
local sp = ct.parse_span(txt, c)
table.insert(last.lines, sp)
j:hook('block_aside_attach', c, last, sp, l)
j:hook('block_aside_line_insert', c, last, sp, l)
end
end};
{pred = function(s,c) return s:match'^[*:]' end, fn = blockwrap(function(l,c) -- list
local stars = l:match '^([*:]+)'
local depth = utf8.len(stars)
local id, txt = l:sub(#stars+1):match '^(.-)%s*(.-)$'
local ordered = stars:sub(#stars) == ':'
if id == '' then id = nil end
return {
kind = 'list-item';
depth = depth;
ordered = ordered;
spans = ct.parse_span(txt, c);
}
end)};
{seq = '\t', fn = function(l,c,j)
local ref, val = l:match '\t+([^:]+):%s*(.*)$'
c.sec.refs[ref] = val
j:hook('section_ref_attach', c, ref, val, l)
end};
{seq = '%', fn = function(l,c,j) -- directive
local crit, cmdline = l:match '^%%([!%%]?)%s*(.*)$'
local words = function(i)
local wds = {}
if i == 0 then return cmdline end
for w,pos in cmdline:gmatch '([^%s]+)()' do
table.insert(wds, w)
i = i - 1
................................................................................
return table.unpack(wds)
end
end
end
local cmd, rest = words(1)
if ct.directives[cmd] then
ct.directives[cmd](words,c,j)
elseif cmd == c.doc.stage.mode['render:format'] then
-- this is a directive for the renderer; insert it into the tree as is
local dir = {
kind = 'directive';
critical = crit == '!';
words = words;
}
c:insert(dir)
j:hook('block_directive_render', j, c, dir)
elseif c.doc:allow_ext(cmd) then -- extension directives begin with their id
local ext = ct.ext.loaded[cmd]
if ext.directives then
local _, topcmd = words(2)
if ext.directives[topcmd] then
ext.directives[topcmd](j:delegate(ext), c, words)
elseif ext.directives[true] then -- catch-all
ext.directives[true](j:delegate(ext), c, words)
elseif crit == '!' then
c:fail('extension %s does not support critical directive %s', cmd, topcmd)
end
end
elseif crit == '!' then
c:fail('critical directive %s not supported',cmd)
end
end;};
{seq = '~~~', fn = blockwrap(function(l,c,j)
local extract = function(ptn, str)
local start, stop = str:find(ptn)
if not start then return nil, str end
local ex = str:sub(start,stop)
local n = str:sub(1,start-1) .. str:sub(stop+1)
return ex, n
end
................................................................................
lang, s = extract('%b[]', s)
if lang then lang = lang:sub(2,-2) end
id, title = extract('#[^%s]+', s)
if id then id = id:sub(2) end
elseif l:match '^~~~' then -- MD shorthand style
lang = l:match '^~~~%s*(.-)%s*$'
end
local mode = {
kind = 'code';
listing = {
kind = 'listing';
lang = lang, id = id, title = title and ct.parse_span(title,c);
lines = {};
}
}
j:hook('mode_switch', c, mode)
c.mode = mode
if id then
if c.sec.refs[id] then c:fail('duplicate ID %s', id) end
c.sec.refs[id] = c.mode.listing
end
j:hook('block_insert', c, mode.listing, l)
return c.mode.listing;
end)};
{pred = function(s,c)
if s:match '^[%-_][*_%-%s]+' then return true end
if startswith(s, '—') then
for c, p in eachcode(s) do
if ({
................................................................................
end)};
{fn = insert_paragraph};
}
function ct.parse(file, src, mode)
local function
is_whitespace(cp)
return cp == 0x20 or cp == 0xe390
end
local ctx = ct.ctx.mk(src)
ctx.line = 0
ctx.doc = ct.doc.mk()
ctx.doc.src = src
ctx.doc.stage = {
kind = 'parse';
mode = mode;
}
ctx.sec = ctx.doc:mksec() -- toplevel section
ctx.sec.origin = ctx:clone()
-- create states for extension hooks
local job = ctx.doc:job('parse',nil,ctx)
for full_line in file:lines() do ctx.line = ctx.line + 1
local l
for p, c in utf8.codes(full_line) do
if not is_whitespace(c) then
l = full_line:sub(p)
break
end
end
job:hook('line_read',ctx,l)
if ctx.mode then
if ctx.mode.kind == 'code' then
if l and l:match '^~~~%s*$' then
job:hook('block_listing_end',ctx,ctx.mode.listing)
job:hook('mode_switch', c, nil)
ctx.mode = nil
else
-- TODO handle formatted code
local newline = {l}
table.insert(ctx.mode.listing.lines, newline)
job:hook('block_listing_newline',ctx,ctx.mode.listing,newline)
end
else
ctx:fail('unimplemented syntax mode %s', ctx.mode.kind)
end
else
if l then
local function tryseqs(seqs, ...)
for _, i in pairs(seqs) do
if ((not i.seq ) or startswith(l, i.seq)) and
((not i.pred) or i.pred (l, ctx )) then
i.fn(l, ctx, job, ...)
return true
end
end
return false
end
if not tryseqs(ct.ctlseqs) then
local found = false
for eb, ext, state in job:each('blocks') do
if tryseqs(eb, state) then found = true break end
end
if not found then
ctx:fail 'incomprehensible input line'
end
end
else
if next(ctx.sec.blocks) and ctx.sec.blocks[#ctx.sec.blocks].kind ~= 'break' then
local brk = {kind='break'}
job:hook('block_break', ctx, brk, l)
table.insert(ctx.sec.blocks, brk)
end
end
end
job:hook('line_end',ctx,l)
end
return ctx.doc
end
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