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Aegisub/aegisub/src/auto4_lua_assfile.cpp
Thomas Goyne c40aa7080a Eliminate almost all uses of AssFile::top. 
Originally committed to SVN as r4669.
2010-07-09 07:31:48 +00:00

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// Copyright (c) 2006, Niels Martin Hansen
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Aegisub Group nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Aegisub Project http://www.aegisub.org/
//
// $Id$
/// @file auto4_lua_assfile.cpp
/// @brief Lua 5.1-based scripting engine (interface to subtitle files)
/// @ingroup scripting
///
#include "config.h"
#ifdef WITH_AUTO4_LUA
#ifndef AGI_PRE
#include <assert.h>
#include <algorithm>
#include <wx/log.h>
#endif
#include <libaegisub/log.h>
#include "ass_dialogue.h"
#include "ass_file.h"
#include "ass_override.h"
#include "ass_style.h"
#include "auto4_lua.h"
#include "utils.h"
// This must be below the headers above.
#ifdef __WINDOWS__
#include "../../contrib/lua51/src/lualib.h"
#include "../../contrib/lua51/src/lauxlib.h"
#else
#include <lualib.h>
#include <lauxlib.h>
#endif
/// DOCME
namespace Automation4 {
// LuaAssFile
/// @brief DOCME
/// @return
///
void LuaAssFile::CheckAllowModify()
{
if (can_modify)
return;
lua_pushstring(L, "Attempt to modify subtitles in read-only feature context.");
lua_error(L);
}
/// @brief DOCME
/// @param L
/// @param e
///
void LuaAssFile::AssEntryToLua(lua_State *L, AssEntry *e)
{
lua_newtable(L);
wxString section(e->group);
lua_pushstring(L, section.mb_str(wxConvUTF8));
lua_setfield(L, -2, "section");
wxString raw(e->GetEntryData());
lua_pushstring(L, raw.mb_str(wxConvUTF8));
lua_setfield(L, -2, "raw");
if (StringEmptyOrWhitespace(raw)) {
lua_pushstring(L, "clear");
} else if (raw[0] == _T(';')) {
// "text" field, same as "raw" but with semicolon stripped
wxString text(raw, 1, raw.size()-1);
lua_pushstring(L, text.mb_str(wxConvUTF8));
lua_setfield(L, -2, "text");
lua_pushstring(L, "comment");
} else if (raw[0] == _T('[')) {
lua_pushstring(L, "head");
} else if (section.Lower() == _T("[script info]")) {
// assumed "info" class
// first "key"
wxString key = raw.BeforeFirst(_T(':'));
lua_pushstring(L, key.mb_str(wxConvUTF8));
lua_setfield(L, -2, "key");
// then "value"
wxString value = raw.AfterFirst(_T(':'));
lua_pushstring(L, value.mb_str(wxConvUTF8));
lua_setfield(L, -2, "value");
lua_pushstring(L, "info");
} else if (raw.Left(7).Lower() == _T("format:")) {
// TODO: parse the format line; just use a tokenizer
lua_pushstring(L, "format");
} else if (e->GetType() == ENTRY_DIALOGUE) {
AssDialogue *dia = static_cast<AssDialogue*>(e);
lua_pushboolean(L, (int)dia->Comment);
lua_setfield(L, -2, "comment");
lua_pushnumber(L, dia->Layer);
lua_setfield(L, -2, "layer");
lua_pushnumber(L, dia->Start.GetMS());
lua_setfield(L, -2, "start_time");
lua_pushnumber(L, dia->End.GetMS());
lua_setfield(L, -2, "end_time");
lua_pushstring(L, dia->Style.mb_str(wxConvUTF8));
lua_setfield(L, -2, "style");
lua_pushstring(L, dia->Actor.mb_str(wxConvUTF8));
lua_setfield(L, -2, "actor");
lua_pushnumber(L, dia->Margin[0]);
lua_setfield(L, -2, "margin_l");
lua_pushnumber(L, dia->Margin[1]);
lua_setfield(L, -2, "margin_r");
lua_pushnumber(L, dia->Margin[2]);
lua_setfield(L, -2, "margin_t");
lua_pushnumber(L, dia->Margin[3]);
lua_setfield(L, -2, "margin_b");
lua_pushstring(L, dia->Effect.mb_str(wxConvUTF8));
lua_setfield(L, -2, "effect");
lua_pushstring(L, ""); // tentative AS5 field
lua_setfield(L, -2, "userdata");
lua_pushstring(L, dia->Text.mb_str(wxConvUTF8));
lua_setfield(L, -2, "text");
lua_pushstring(L, "dialogue");
} else if (e->GetType() == ENTRY_STYLE) {
AssStyle *sty = static_cast<AssStyle*>(e);
lua_pushstring(L, sty->name.mb_str(wxConvUTF8));
lua_setfield(L, -2, "name");
lua_pushstring(L, sty->font.mb_str(wxConvUTF8));
lua_setfield(L, -2, "fontname");
lua_pushnumber(L, sty->fontsize);
lua_setfield(L, -2, "fontsize");
lua_pushstring(L, sty->primary.GetASSFormatted(true).mb_str(wxConvUTF8));
lua_setfield(L, -2, "color1");
lua_pushstring(L, sty->secondary.GetASSFormatted(true).mb_str(wxConvUTF8));
lua_setfield(L, -2, "color2");
lua_pushstring(L, sty->outline.GetASSFormatted(true).mb_str(wxConvUTF8));
lua_setfield(L, -2, "color3");
lua_pushstring(L, sty->shadow.GetASSFormatted(true).mb_str(wxConvUTF8));
lua_setfield(L, -2, "color4");
lua_pushboolean(L, (int)sty->bold);
lua_setfield(L, -2, "bold");
lua_pushboolean(L, (int)sty->italic);
lua_setfield(L, -2, "italic");
lua_pushboolean(L, (int)sty->underline);
lua_setfield(L, -2, "underline");
lua_pushboolean(L, (int)sty->strikeout);
lua_setfield(L, -2, "strikeout");
lua_pushnumber(L, sty->scalex);
lua_setfield(L, -2, "scale_x");
lua_pushnumber(L, sty->scaley);
lua_setfield(L, -2, "scale_y");
lua_pushnumber(L, sty->spacing);
lua_setfield(L, -2, "spacing");
lua_pushnumber(L, sty->angle);
lua_setfield(L, -2, "angle");
lua_pushnumber(L, sty->borderstyle);
lua_setfield(L, -2, "borderstyle");
lua_pushnumber(L, sty->outline_w);
lua_setfield(L, -2, "outline");
lua_pushnumber(L, sty->shadow_w);
lua_setfield(L, -2, "shadow");
lua_pushnumber(L, sty->alignment);
lua_setfield(L, -2, "align");
lua_pushnumber(L, sty->Margin[0]);
lua_setfield(L, -2, "margin_l");
lua_pushnumber(L, sty->Margin[1]);
lua_setfield(L, -2, "margin_r");
lua_pushnumber(L, sty->Margin[2]);
lua_setfield(L, -2, "margin_t");
lua_pushnumber(L, sty->Margin[3]);
lua_setfield(L, -2, "margin_b");
lua_pushnumber(L, sty->encoding);
lua_setfield(L, -2, "encoding");
lua_pushnumber(L, 2); // From STS.h: "0: window, 1: video, 2: undefined (~window)"
lua_setfield(L, -2, "relative_to");
lua_pushboolean(L, false); // vertical writing, tentative AS5 field
lua_setfield(L, -2, "vertical");
lua_pushstring(L, "style");
} else {
lua_pushstring(L, "unknown");
}
// store class of item; last thing done for each class specific code must be pushing the class name
lua_setfield(L, -2, "class");
}
/// @brief DOCME
/// @param L
/// @return
///
AssEntry *LuaAssFile::LuaToAssEntry(lua_State *L)
{
// assume an assentry table is on the top of the stack
// convert it to a real AssEntry object, and pop the table from the stack
if (!lua_istable(L, -1)) {
lua_pushstring(L, "Can't convert a non-table value to AssEntry");
lua_error(L);
return 0;
}
lua_getfield(L, -1, "class");
if (!lua_isstring(L, -1)) {
lua_pushstring(L, "Table lacks 'class' field, can't convert to AssEntry");
lua_error(L);
return 0;
}
wxString lclass(lua_tostring(L, -1), wxConvUTF8);
lclass.MakeLower();
lua_pop(L, 1);
AssEntry *result;
/// DOCME
#define GETSTRING(varname, fieldname, lineclass) \
lua_getfield(L, -1, fieldname); \
if (!lua_isstring(L, -1)) { \
lua_pushstring(L, "Invalid string '" fieldname "' field in '" lineclass "' class subtitle line"); \
lua_error(L); \
return 0; \
} \
wxString varname (lua_tostring(L, -1), wxConvUTF8); \
lua_pop(L, 1);
/// DOCME
#define GETFLOAT(varname, fieldname, lineclass) \
lua_getfield(L, -1, fieldname); \
if (!lua_isnumber(L, -1)) { \
lua_pushstring(L, "Invalid number '" fieldname "' field in '" lineclass "' class subtitle line"); \
lua_error(L); \
return 0; \
} \
float varname = lua_tonumber(L, -1); \
lua_pop(L, 1);
/// DOCME
#define GETINT(varname, fieldname, lineclass) \
lua_getfield(L, -1, fieldname); \
if (!lua_isnumber(L, -1)) { \
lua_pushstring(L, "Invalid number '" fieldname "' field in '" lineclass "' class subtitle line"); \
lua_error(L); \
return 0; \
} \
int varname = lua_tointeger(L, -1); \
lua_pop(L, 1);
/// DOCME
#define GETBOOL(varname, fieldname, lineclass) \
lua_getfield(L, -1, fieldname); \
if (!lua_isboolean(L, -1)) { \
lua_pushstring(L, "Invalid boolean '" fieldname "' field in '" lineclass "' class subtitle line"); \
lua_error(L); \
return 0; \
} \
bool varname = !!lua_toboolean(L, -1); \
lua_pop(L, 1);
GETSTRING(section, "section", "common")
if (lclass == _T("clear")) {
result = new AssEntry(_T(""));
result->group = section;
} else if (lclass == _T("comment")) {
GETSTRING(raw, "text", "comment")
raw.Prepend(_T(";"));
result = new AssEntry(raw);
result->group = section;
} else if (lclass == _T("head")) {
result = new AssEntry(section);
result->group = section;
} else if (lclass == _T("info")) {
GETSTRING(key, "key", "info")
GETSTRING(value, "value", "info")
result = new AssEntry(wxString::Format(_T("%s: %s"), key.c_str(), value.c_str()));
result->group = _T("[Script Info]"); // just so it can be read correctly back
} else if (lclass == _T("format")) {
// ohshi- ...
// *FIXME* maybe ignore the actual data and just put some default stuff based on section?
result = new AssEntry(_T("Format: Auto4,Is,Broken"));
result->group = section;
} else if (lclass == _T("style")) {
GETSTRING(name, "name", "style")
GETSTRING(fontname, "fontname", "style")
GETFLOAT(fontsize, "fontsize", "style")
GETSTRING(color1, "color1", "style")
GETSTRING(color2, "color2", "style")
GETSTRING(color3, "color3", "style")
GETSTRING(color4, "color4", "style")
GETBOOL(bold, "bold", "style")
GETBOOL(italic, "italic", "style")
GETBOOL(underline, "underline", "style")
GETBOOL(strikeout, "strikeout", "style")
GETFLOAT(scale_x, "scale_x", "style")
GETFLOAT(scale_y, "scale_y", "style")
GETFLOAT(spacing, "spacing", "style")
GETFLOAT(angle, "angle", "style")
GETINT(borderstyle, "borderstyle", "style")
GETFLOAT(outline, "outline", "style")
GETFLOAT(shadow, "shadow", "style")
GETINT(align, "align", "style")
GETINT(margin_l, "margin_l", "style")
GETINT(margin_r, "margin_r", "style")
GETINT(margin_t, "margin_t", "style")
GETINT(margin_b, "margin_b", "style")
GETINT(encoding, "encoding", "style")
// leaving out relative_to and vertical
AssStyle *sty = new AssStyle();
sty->name = name;
sty->font = fontname;
sty->fontsize = fontsize;
sty->primary.Parse(color1);
sty->secondary.Parse(color2);
sty->outline.Parse(color3);
sty->shadow.Parse(color4);
sty->bold = bold;
sty->italic = italic;
sty->underline = underline;
sty->strikeout = strikeout;
sty->scalex = scale_x;
sty->scaley = scale_y;
sty->spacing = spacing;
sty->angle = angle;
sty->borderstyle = borderstyle;
sty->outline_w = outline;
sty->shadow_w = shadow;
sty->alignment = align;
sty->Margin[0] = margin_l;
sty->Margin[1] = margin_r;
sty->Margin[2] = margin_t;
sty->Margin[3] = margin_b;
sty->encoding = encoding;
sty->UpdateData();
result = sty;
} else if (lclass == _T("styleex")) {
lua_pushstring(L, "Found line with class 'styleex' which is not supported. Wait until AS5 is a reality.");
lua_error(L);
return 0;
} else if (lclass == _T("dialogue")) {
GETBOOL(comment, "comment", "dialogue")
GETINT(layer, "layer", "dialogue")
GETINT(start_time, "start_time", "dialogue")
GETINT(end_time, "end_time", "dialogue")
GETSTRING(style, "style", "dialogue")
GETSTRING(actor, "actor", "dialogue")
GETINT(margin_l, "margin_l", "dialogue")
GETINT(margin_r, "margin_r", "dialogue")
GETINT(margin_t, "margin_t", "dialogue")
GETINT(margin_b, "margin_b", "dialogue")
GETSTRING(effect, "effect", "dialogue")
//GETSTRING(userdata, "userdata", "dialogue")
GETSTRING(text, "text", "dialogue")
AssDialogue *dia = new AssDialogue();
dia->Comment = comment;
dia->Layer = layer;
dia->Start.SetMS(start_time);
dia->End.SetMS(end_time);
dia->Style = style;
dia->Actor = actor;
dia->Margin[0] = margin_l;
dia->Margin[1] = margin_r;
dia->Margin[2] = margin_t;
dia->Margin[3] = margin_b;
dia->Effect = effect;
dia->Text = text;
result = dia;
} else {
lua_pushfstring(L, "Found line with unknown class: %s", lclass.mb_str(wxConvUTF8).data());
lua_error(L);
return 0;
}
/// DOCME
#undef GETSTRING
/// DOCME
#undef GETFLOAT
/// DOCME
#undef GETINT
/// DOCME
#undef GETBOOL
//lua_pop(L, 1); // the function shouldn't eat the table it converted
return result;
}
/// @brief DOCME
/// @param n
///
void LuaAssFile::GetAssEntry(int n)
{
entryIter e;
if (n < last_entry_id/2) {
// fastest to search from start
e = ass->Line.begin();
last_entry_id = n;
while (n-- > 0) e++;
last_entry_ptr = e;
} else if (last_entry_id + n > last_entry_id + ((int)ass->Line.size() - last_entry_id)/2) {
// fastest to search from end
int i = (int)ass->Line.size();
e = ass->Line.end();
last_entry_id = n;
while (i-- > n) e--;
last_entry_ptr = e;
} else if (last_entry_id > n) {
// search backwards from last_entry_id
e = last_entry_ptr;
while (n < last_entry_id) e--, last_entry_id--;
last_entry_ptr = e;
} else {
// search forwards from last_entry_id
e = last_entry_ptr;
// reqid and last_entry_id might be equal here, make sure the loop will still work
while (n > last_entry_id) e++, last_entry_id++;
last_entry_ptr = e;
}
}
/// @brief DOCME
/// @param L
/// @return
///
int LuaAssFile::ObjectIndexRead(lua_State *L)
{
LuaAssFile *laf = GetObjPointer(L, 1);
switch (lua_type(L, 2)) {
case LUA_TNUMBER:
{
// read an indexed AssEntry
// get requested index
int reqid = lua_tointeger(L, 2);
if (reqid <= 0 || reqid > (int)laf->ass->Line.size()) {
lua_pushfstring(L, "Requested out-of-range line from subtitle file: %d", reqid);
lua_error(L);
return 0;
}
laf->GetAssEntry(reqid-1);
laf->AssEntryToLua(L, *laf->last_entry_ptr);
return 1;
}
case LUA_TSTRING:
{
// either return n or a function doing further stuff
const char *idx = lua_tostring(L, 2);
if (strcmp(idx, "n") == 0) {
// get number of items
lua_pushnumber(L, laf->ass->Line.size());
return 1;
} else if (strcmp(idx, "delete") == 0) {
// make a "delete" function
lua_pushvalue(L, 1);
lua_pushcclosure(L, ObjectDelete, 1);
return 1;
} else if (strcmp(idx, "deleterange") == 0) {
// make a "deleterange" function
lua_pushvalue(L, 1);
lua_pushcclosure(L, ObjectDeleteRange, 1);
return 1;
} else if (strcmp(idx, "insert") == 0) {
// make an "insert" function
lua_pushvalue(L, 1);
lua_pushcclosure(L, ObjectInsert, 1);
return 1;
} else if (strcmp(idx, "append") == 0) {
// make an "append" function
lua_pushvalue(L, 1);
lua_pushcclosure(L, ObjectAppend, 1);
return 1;
} else {
// idiot
lua_pushfstring(L, "Invalid indexing in Subtitle File object: '%s'", idx);
lua_error(L);
// should never return
}
assert(false);
}
default:
{
// crap, user is stupid!
lua_pushfstring(L, "Attempt to index a Subtitle File object with value of type '%s'.", lua_typename(L, lua_type(L, 2)));
lua_error(L);
}
}
assert(false);
return 0;
}
/// @brief DOCME
/// @param L
/// @return
///
int LuaAssFile::ObjectIndexWrite(lua_State *L)
{
// instead of implementing everything twice, just call the other modification-functions from here
// after modifying the stack to match their expectations
if (!lua_isnumber(L, 2)) {
lua_pushstring(L, "Attempt to write to non-numeric index in subtitle index");
lua_error(L);
return 0;
}
LuaAssFile *laf = GetObjPointer(L, 1);
laf->CheckAllowModify();
int n = lua_tointeger(L, 2);
if (n < 0) {
// insert line so new index is n
lua_pushvalue(L, 1);
lua_pushcclosure(L, ObjectInsert, 1);
lua_pushinteger(L, -n);
lua_pushvalue(L, 3);
lua_call(L, 2, 0);
return 0;
} else if (n == 0) {
// append line to list
lua_pushvalue(L, 1);
lua_pushcclosure(L, ObjectAppend, 1);
lua_pushvalue(L, 3);
lua_call(L, 1, 0);
return 0;
} else {
// replace line at index n or delete
if (!lua_isnil(L, 3)) {
// insert
AssEntry *e = LuaToAssEntry(L);
laf->GetAssEntry(n-1);
delete *laf->last_entry_ptr;
*laf->last_entry_ptr = e;
return 0;
} else {
// delete
lua_pushvalue(L, 1);
lua_pushcclosure(L, ObjectDelete, 1);
lua_pushvalue(L, 2);
lua_call(L, 1, 0);
return 0;
}
}
}
/// @brief DOCME
/// @param L
/// @return
///
int LuaAssFile::ObjectGetLen(lua_State *L)
{
LuaAssFile *laf = GetObjPointer(L, 1);
lua_pushnumber(L, laf->ass->Line.size());
return 1;
}
/// @brief DOCME
/// @param L
/// @return
///
int LuaAssFile::ObjectDelete(lua_State *L)
{
LuaAssFile *laf = GetObjPointer(L, lua_upvalueindex(1));
laf->CheckAllowModify();
// get number of items to delete
int itemcount = lua_gettop(L);
std::vector<int> ids;
ids.reserve(itemcount);
// sort the item id's so we can delete from last to first to preserve original numbering
while (itemcount > 0) {
if (!lua_isnumber(L, itemcount)) {
lua_pushstring(L, "Attempt to delete non-numeric line id from Subtitle Object");
lua_error(L);
return 0;
}
int n = lua_tointeger(L, itemcount);
if (n > (int)laf->ass->Line.size() || n < 1) {
lua_pushstring(L, "Attempt to delete out of range line id from Subtitle Object");
lua_error(L);
return 0;
}
ids.push_back(n-1); // make C-style line ids
--itemcount;
}
std::sort(ids.begin(), ids.end());
// now delete the id's backwards
// start with the last one, to initialise things
laf->GetAssEntry(ids.back());
// get an iterator to it, and increase last_entry_ptr so it'll still be valid after deletion, and point to the right index
entryIter e = laf->last_entry_ptr++;
laf->ass->Line.erase(e);
int n = laf->last_entry_id;
for (int i = (int)ids.size()-2; i >= 0; --i) {
int id = ids[i];
while (id > n--) laf->last_entry_ptr--;
e = laf->last_entry_ptr++;
delete *e;
laf->ass->Line.erase(e);
}
laf->last_entry_id = n;
return 0;
}
/// @brief DOCME
/// @param L
/// @return
///
int LuaAssFile::ObjectDeleteRange(lua_State *L)
{
LuaAssFile *laf = GetObjPointer(L, lua_upvalueindex(1));
laf->CheckAllowModify();
if (!lua_isnumber(L, 1) || !lua_isnumber(L, 2)) {
lua_pushstring(L, "Non-numeric argument given to deleterange");
lua_error(L);
return 0;
}
int a = lua_tointeger(L, 1), b = lua_tointeger(L, 2);
if (a < 1) a = 1;
if (b > (int)laf->ass->Line.size()) b = (int)laf->ass->Line.size();
if (b < a) return 0;
if (a == b) {
laf->GetAssEntry(a-1);
entryIter e = laf->last_entry_ptr++;
delete *e;
laf->ass->Line.erase(e);
return 0;
}
entryIter ai, bi;
laf->GetAssEntry(a-1);
ai = laf->last_entry_ptr;
laf->GetAssEntry(b-1);
bi = laf->last_entry_ptr;
laf->last_entry_ptr++;
laf->ass->Line.erase(ai, bi);
return 0;
}
/// @brief DOCME
/// @param L
/// @return
///
int LuaAssFile::ObjectAppend(lua_State *L)
{
LuaAssFile *laf = GetObjPointer(L, lua_upvalueindex(1));
laf->CheckAllowModify();
int n = lua_gettop(L);
if (laf->last_entry_ptr != laf->ass->Line.begin()) {
laf->last_entry_ptr--;
laf->last_entry_id--;
}
for (int i = 1; i <= n; i++) {
lua_pushvalue(L, i);
AssEntry *e = LuaToAssEntry(L);
if (e->GetType() == ENTRY_DIALOGUE) {
// find insertion point, looking backwards
std::list<AssEntry*>::iterator it = laf->ass->Line.end();
do { --it; } while ((*it)->GetType() != ENTRY_DIALOGUE);
// found last dialogue entry in file, move one past
++it;
laf->ass->Line.insert(it, e);
}
else {
laf->ass->Line.push_back(e);
}
}
return 0;
}
/// @brief DOCME
/// @param L
/// @return
///
int LuaAssFile::ObjectInsert(lua_State *L)
{
LuaAssFile *laf = GetObjPointer(L, lua_upvalueindex(1));
laf->CheckAllowModify();
if (!lua_isnumber(L, 1)) {
lua_pushstring(L, "Can't insert at non-numeric index");
lua_error(L);
return 0;
}
int n = lua_gettop(L);
laf->GetAssEntry(int(lua_tonumber(L, 1)-1));
for (int i = 2; i <= n; i++) {
lua_pushvalue(L, i);
AssEntry *e = LuaToAssEntry(L);
lua_pop(L, 1);
laf->ass->Line.insert(laf->last_entry_ptr, e);
laf->last_entry_id++;
}
return 0;
}
/// @brief DOCME
/// @param L
/// @return
///
int LuaAssFile::ObjectGarbageCollect(lua_State *L)
{
LuaAssFile *laf = GetObjPointer(L, 1);
delete laf;
LOG_D("automation/lua") << "Garbage collected LuaAssFile";
return 0;
}
/// @brief DOCME
/// @param L
/// @return
///
int LuaAssFile::LuaParseTagData(lua_State *L)
{
lua_newtable(L);
// TODO
return 1;
}
/// @brief DOCME
/// @param L
/// @return
///
int LuaAssFile::LuaUnparseTagData(lua_State *L)
{
lua_pushstring(L, "");
// TODO
return 1;
}
/// @brief DOCME
/// @param L
/// @return
///
int LuaAssFile::LuaParseKaraokeData(lua_State *L)
{
AssEntry *e = LuaToAssEntry(L);
AssDialogue *dia = dynamic_cast<AssDialogue*>(e);
if (!dia) {
delete e;
lua_pushstring(L, "Attempt to create karaoke table from non-dialogue subtitle line");
lua_error(L);
return 0;
}
dia->ParseASSTags();
int kcount = 0;
int kdur = 0;
int ktime = 0;
wxString ktag = _T("");
wxString ktext = _T("");
wxString ktext_stripped = _T("");
lua_newtable(L);
for (int i = 0; i < (int)dia->Blocks.size(); i++) {
AssDialogueBlock *block = dia->Blocks[i];
switch (block->GetType()) {
case BLOCK_BASE:
break;
case BLOCK_PLAIN:
ktext += block->text;
ktext_stripped += block->text;
break;
case BLOCK_DRAWING:
// a drawing is regarded as a kind of control code here, so it's just stripped away
ktext += block->text;
break;
case BLOCK_OVERRIDE: {
bool brackets_open = false;
AssDialogueBlockOverride *ovr = dynamic_cast<AssDialogueBlockOverride*>(block);
for (int j = 0; j < (int)ovr->Tags.size(); j++) {
AssOverrideTag *tag = ovr->Tags[j];
if (tag->IsValid() && tag->Name.Mid(0,2).CmpNoCase(_T("\\k")) == 0) {
// karaoke tag
if (brackets_open) {
ktext += _T("}");
brackets_open = false;
}
// store to lua
lua_newtable(L);
lua_pushnumber(L, kdur);
lua_setfield(L, -2, "duration");
lua_pushnumber(L, ktime);
lua_setfield(L, -2, "start_time");
lua_pushnumber(L, ktime+kdur);
lua_setfield(L, -2, "end_time");
lua_pushstring(L, ktag.mb_str(wxConvUTF8));
lua_setfield(L, -2, "tag");
lua_pushstring(L, ktext.mb_str(wxConvUTF8));
lua_setfield(L, -2, "text");
lua_pushstring(L, ktext_stripped.mb_str(wxConvUTF8));
lua_setfield(L, -2, "text_stripped");
lua_rawseti(L, -2, kcount);
// prepare new syllable
kcount++;
ktag = tag->Name.Mid(1);
// check if it's a "set time" tag, special handling for that (depends on previous syllable duration)
if (ktag == _T("kt")) {
ktime = tag->Params[0]->Get<int>() * 10;
kdur = 0;
} else {
ktime += kdur; // duration of previous syllable
kdur = tag->Params[0]->Get<int>() * 10;
}
ktext.clear();
ktext_stripped.clear();
} else {
// not karaoke tag
if (!brackets_open) {
ktext += _T("{");
brackets_open = true;
}
ktext += *tag;
}
}
if (brackets_open) {
ktext += _T("}");
brackets_open = false;
}
break;
}
}
}
dia->ClearBlocks();
// store final syllable/block to lua
lua_newtable(L);
lua_pushnumber(L, kdur);
lua_setfield(L, -2, "duration");
lua_pushnumber(L, ktime);
lua_setfield(L, -2, "start_time");
lua_pushnumber(L, ktime+kdur);
lua_setfield(L, -2, "end_time");
lua_pushstring(L, ktag.mb_str(wxConvUTF8));
lua_setfield(L, -2, "tag");
lua_pushstring(L, ktext.mb_str(wxConvUTF8));
lua_setfield(L, -2, "text");
lua_pushstring(L, ktext_stripped.mb_str(wxConvUTF8));
lua_setfield(L, -2, "text_stripped");
lua_rawseti(L, -2, kcount);
delete dia;
return 1;
}
/// @brief DOCME
/// @param L
/// @return
///
int LuaAssFile::LuaSetUndoPoint(lua_State *L)
{
LuaAssFile *laf = GetObjPointer(L, lua_upvalueindex(1));
if (!laf->can_set_undo) {
lua_pushstring(L, "Attempt to set an undo point in a context without undo-support.");
lua_error(L);
return 0;
}
wxString description;
if (lua_isstring(L, 1)) {
description = wxString(lua_tostring(L, 1), wxConvUTF8);
lua_pop(L, 1);
}
laf->ass->Commit(description);
return 0;
}
/// @brief DOCME
/// @param L
/// @param idx
/// @return
///
LuaAssFile *LuaAssFile::GetObjPointer(lua_State *L, int idx)
{
assert(lua_type(L, idx) == LUA_TUSERDATA);
void *ud = lua_touserdata(L, idx);
return *((LuaAssFile**)ud);
}
/// @brief DOCME
///
LuaAssFile::~LuaAssFile()
{
}
/// @brief DOCME
/// @param _L
/// @param _ass
/// @param _can_modify
/// @param _can_set_undo
///
LuaAssFile::LuaAssFile(lua_State *_L, AssFile *_ass, bool _can_modify, bool _can_set_undo)
: ass(_ass)
, L(_L)
, can_modify(_can_modify)
, can_set_undo(_can_set_undo)
{
// prepare cursor
last_entry_ptr = ass->Line.begin();
last_entry_id = 0;
// prepare userdata object
void *ud = lua_newuserdata(L, sizeof(LuaAssFile*));
*((LuaAssFile**)ud) = this;
// make the metatable
lua_newtable(L);
lua_pushcfunction(L, ObjectIndexRead);
lua_setfield(L, -2, "__index");
lua_pushcfunction(L, ObjectIndexWrite);
lua_setfield(L, -2, "__newindex");
lua_pushcfunction(L, ObjectGetLen);
lua_setfield(L, -2, "__len");
lua_pushcfunction(L, ObjectGarbageCollect);
lua_setfield(L, -2, "__gc");
lua_setmetatable(L, -2);
// register misc functions
// assume the "aegisub" global table exists
lua_getglobal(L, "aegisub");
assert(lua_type(L, -2) == LUA_TUSERDATA);
lua_pushvalue(L, -2); // the userdata object
lua_pushcclosure(L, LuaParseTagData, 1);
lua_setfield(L, -2, "parse_tag_data");
assert(lua_type(L, -2) == LUA_TUSERDATA);
lua_pushvalue(L, -2);
lua_pushcclosure(L, LuaUnparseTagData, 1);
lua_setfield(L, -2, "unparse_tag_data");
assert(lua_type(L, -2) == LUA_TUSERDATA);
lua_pushvalue(L, -2);
lua_pushcclosure(L, LuaParseKaraokeData, 1);
lua_setfield(L, -2, "parse_karaoke_data");
assert(lua_type(L, -2) == LUA_TUSERDATA);
lua_pushvalue(L, -2);
lua_pushcclosure(L, LuaSetUndoPoint, 1);
lua_setfield(L, -2, "set_undo_point");
lua_pop(L, 1);
}
};
#endif // WITH_AUTO4_LUA
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