Semi-complete kara-templater implementation, regular syl and line handling should be in place now (untested though)

Originally committed to SVN as r1007.
This commit is contained in:
Niels Martin Hansen 2007-04-04 20:33:37 +00:00
parent 5b0255a59d
commit 06d5929bea
2 changed files with 235 additions and 18 deletions

View file

@ -221,6 +221,23 @@ function parse_template(meta, styles, line, templates, mods)
end
end
-- Iterator function, return all templates that apply to the given line
function matching_templates(templates, line)
local lastkey = 0
local function test_next()
lastkey = lastkey + 1
local t = templates[lastkey]
if not t then
return nil
elseif t.style == line.style or not t.style then
return t
else
return test_next()
end
end
return test_next
end
-- Apply the templates
function apply_templates(meta, styles, subs, templates)
@ -234,16 +251,7 @@ function apply_templates(meta, styles, subs, templates)
-- run all run-once code snippets
for k, t in pairs(templates.once) do
assert(t.code, "WTF, a 'once' template without code?")
local f, err = loadstring(t.code, "template code once")
if not f then
aegisub.debug.out(2, "Failed to parse Lua code: %s\nCode that failed to parse: %s\n\n", err, t.code)
else
setfenv(f, tenv)
local res, err = pcall(f)
if not res then
aegisub.debug.out(2, "Runtime error in template code: %s\nCode producing error: %s\n\n", err, t.code)
end
end
run_template_code(t, tenv)
end
-- start processing lines
@ -256,6 +264,7 @@ function apply_templates(meta, styles, subs, templates)
l.comment = true
l.effect = "karaoke"
subs[i] = l
l.i = i
-- and then run it through the templates
apply_line(meta, styles, subs, l, templates, tenv)
end
@ -263,21 +272,223 @@ function apply_templates(meta, styles, subs, templates)
end
function apply_line(meta, styles, subs, line, templates, tenv)
-- apply all line templates
for k, t in pairs(templates.line) do
end
-- loop over syllables
for i = 0, line.karaoke.n do
local syl = line.karaoke[i]
-- apply syllable templates
-- Tell whether any templates were applied to this line, needed to know whether the original line should be removed from input
local applied_templates = false
-- apply character templates
-- General variable replacement context
local varctx = {
layer = line.layer,
lstart = line.start_time,
lend = line.end_time,
ldur = line.duration,
lmid = line.start_time + line.duration/2,
style = line.style,
actor = line.actor,
margin_l = ((line.margin_l > 0) and line.margin_l) or line.styleref.margin_l,
margin_r = ((line.margin_r > 0) and line.margin_r) or line.styleref.margin_r,
margin_t = ((line.margin_t > 0) and line.margin_t) or line.styleref.margin_t,
margin_b = ((line.margin_b > 0) and line.margin_b) or line.styleref.margin_b,
margin_v = ((line.margin_t > 0) and line.margin_t) or line.styleref.margin_t,
syln = line.karaoke.n,
li = line.i,
lleft = line.left,
lcenter = line.left + line.width/2,
lright = line.left + line.width,
lx = line.x,
ly = line.y
-- TODO: more positioning vars
}
-- Specific for whole-line processing
varctx["start"] = varctx.lstart
varctx["end"] = varctx.lend
varctx.dur = varctx.ldur
varctx.mid = varctx.lmid
varctx.i = varctx.li
varctx.left = varctx.lleft
varctx.center = varctx.lcenter
varctx.right = varctx.lright
varctx.x = varctx.lx
varctx.y = varctx.ly
local function set_ctx_syl(syl)
varctx.sstart = syl.start_time
varctx.send = syl.end_time
varctx.sdur = syl.duration
varctx.smid = syl.start_time + syl.duration / 2
varctx["start"] = varctx.sstart
varctx["end"] = varctx.send
varctx.dur = varctx.sdur
varctx.mid = varctx.smid
varctx.si = syl.i
varctx.i = varctx.si
varctx.sleft = syl.left
varctx.scenter = syl.center
varctx.sright = syl.right
if line.halign == "left" then
varctx.sx = varctx.lleft + syl.left
elseif line.halign == "center" then
varctx.sx = varctx.lleft + syl.center
elseif line.halign == "right" then
varctx.sx = varctx.lleft + syl.right
end
-- loop over furigana
varctx.sy = line.y
varctx.left = varctx.sleft
varctx.center = varctx.scenter
varctx.right = varctx.sright
varctx.x = varctx.sx
varctx.y = varctx.sy
end
tenv.orgline = line
tenv.line = nil
tenv.syl = nil
tenv.char = nil
tenv.furi = nil
-- Apply all line templates
for t in matching_templates(templates.line, line) do
if t.code then
run_template_code(t, tenv)
else
applied_templates = true
local newline = table.copy(line)
tenv.line = newline
newline.text = ""
if t.pre ~= "" then
newline.text = newline.text .. run_text_template(t.pre, tenv, varctx)
end
if t.t ~= "" then
for i = 1, line.kara.n do
local syl = line.kara[i]
tenv.syl = syl
set_ctx_syl(syl)
newline.text = newline.text .. run_text_template(t.t, tenv, varctx)
if t.addtext then
if t.keeptags then
newline.text = newline.text .. syl.text
else
newline.text = newline.text .. syl.text_stripped
end
end
end
else
-- hmm, no main template for the line... put original text in
newline.text = newline.text .. line.text
end
newline.effect = "fx"
subs.append(newline)
end
end
-- Loop over syllables
for i = 0, line.kara.n do
local syl = line.kara[i]
-- Apply syllable templates
for t in matching_templates(templates.syl, line) do
tenv.syl = syl
set_ctx_syl(syl)
if not t.inline_fx or t.inline_fx == syl.inline_fx then
if t.code then
run_code_template(t, tenv)
elseif t.multi then
for hl = 1, syl.highlights.n do
local hldata = syl.highlights[hl]
local hlsyl = table.copy(syl)
hlsyl.start_time = hldata.start_time
hlsyl.end_time = hldata.end_time
hlsyl.duration = hldata.duration
tenv.basesyl = syl
tenv.syl = hlsyl
set_ctx_syl(hlsyl)
for j = 1, t.loops do
tenv.j = j
local newline = table.copy(line)
tenv.line = newline
newline.text = run_text_template(t, tenv, varctx)
if t.addtext then
newline.text = newline.text .. syl.text_stripped
end
newline.effect = "fx"
subs.append(newline)
end
end
else
for j = 1, t.loops do
tenv.j = j
local newline = table.copy(line)
tenv.line = newline
newline.text = run_text_template(t, tenv, varctx)
if t.addtext then
newline.text = newline.text .. syl.text_stripped
end
newline.effect = "fx"
subs.append(newline)
end
end
end
end
-- Apply character templates
-- TODO
end
-- Loop over furigana
for i = 1, line.furi.n do
-- TODO
end
end
function run_code_template(template, tenv)
local f, err = loadstring(template.code, "template code")
if not f then
aegisub.debug.out(2, "Failed to parse Lua code: %s\nCode that failed to parse: %s\n\n", err, template.code)
else
setfenv(f, tenv)
for j = 1, template.loops do
tenv.j = j
local res, err = pcall(f)
if not res then
aegisub.debug.out(2, "Runtime error in template code: %s\nCode producing error: %s\n\n", err, template.code)
end
end
end
end
function run_text_template(template, tenv, varctx)
local res = template
-- Replace the variables in the string (this is probably faster than using a custom function, but doesn't provide error reporting)
if varctx then
res = string.gsub(res, "$([%a_]+)", varctx)
end
-- Function for evaluating expressions
local function expression_evaluator(expression)
f, err = loadstring(string.format("return (%s)", expression))
if (err) ~= nil then
aegisub.debug.out(2, "Error parsing expression: %s\nExpression producing error: %s\nTemplate with expression: %s\n\n", err, expression, template)
return "!" .. expression .. "!"
else
setfenv(f, tenv)
local res, val = pcall(f)
if res then
return val
else
aegisub.debug.out(2, "Runtime error in template expression: %s\nExpression producing error: %s\nTemplate with expression: %s\n\n", val, expression, template)
return "!" .. expression .. "!"
end
end
end
-- Find and evaluate expressions
res = string.gsub(res , "!(.-)!", expression_evaluator)
return res
end
-- Main function to do the templating
function filter_apply_templates(subs, config)

View file

@ -210,18 +210,21 @@ function karaskel.preproc_line(subs, meta, styles, line)
line.center = line.left + line.width / 2
line.right = line.left + line.width
line.x = line.left
line.halign = "left"
elseif line.styleref.align == 2 or line.styleref.align == 5 or line.styleref.align == 8 then
-- Centered
line.left = (meta.res_x - line.eff_margin_l - line.eff_margin_r - line.width) / 2 + line.eff_margin_l
line.center = line.left + line.width / 2
line.right = line.left + line.width
line.x = line.center
line.halign = "center"
elseif line.styleref.align == 3 or line.styleref.align == 6 or line.styleref.align == 9 then
-- Right aligned
line.left = meta.res_x - line.eff_margin_r - line.width
line.center = line.left + line.width / 2
line.right = line.left + line.width
line.x = line.right
line.halign = "right"
end
line.hcenter = line.center
if line.styleref.align >=1 and line.styleref.align <= 3 then
@ -230,18 +233,21 @@ function karaskel.preproc_line(subs, meta, styles, line)
line.middle = line.bottom - line.height / 2
line.top = line.bottom - line.height
line.y = line.bottom
line.valign = "bottom"
elseif line.styleref.align >= 4 and line.styleref.align <= 6 then
-- Mid aligned
line.top = (meta.res_y - line.eff_margin_t - line.eff_margin_b) / 2 + line.eff_margin_t
line.middle = line.top + line.height / 2
line.bottom = line.top + line.height
line.y = line.middle
line.valign = "middle"
elseif line.styleref.align >= 7 and line.styleref.align <= 9 then
-- Top aligned
line.top = line.eff_margin_t
line.middle = line.top + line.height / 2
line.bottom = line.top + line.height
line.y = line.top
line.valign = "top"
end
line.vcenter = line.middle