mirror of https://github.com/odrling/Aegisub
106 lines
3.7 KiB
C++
106 lines
3.7 KiB
C++
// Copyright (c) 2006, 2007, 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
|
|
//
|
|
// Website: http://aegisub.cellosoft.com
|
|
// Contact: mailto:jiifurusu@gmail.com
|
|
//
|
|
|
|
#include "auto4_lua_scriptreader.h"
|
|
|
|
namespace Automation4 {
|
|
|
|
// LuaScriptReader
|
|
LuaScriptReader::LuaScriptReader(const wxString &filename)
|
|
{
|
|
#ifdef WIN32
|
|
f = _tfopen(filename.c_str(), _T("rb"));
|
|
#else
|
|
f = fopen(filename.fn_str(), "rb");
|
|
#endif
|
|
first = true;
|
|
databuf = new char[bufsize];
|
|
}
|
|
|
|
LuaScriptReader::~LuaScriptReader()
|
|
{
|
|
if (databuf)
|
|
delete databuf;
|
|
fclose(f);
|
|
}
|
|
|
|
const char* LuaScriptReader::reader_func(lua_State *L, void *data, size_t *size)
|
|
{
|
|
LuaScriptReader *self = (LuaScriptReader*)(data);
|
|
unsigned char *b = (unsigned char *)self->databuf;
|
|
FILE *f = self->f;
|
|
|
|
if (feof(f)) {
|
|
*size = 0;
|
|
return 0;
|
|
}
|
|
|
|
if (self->first) {
|
|
// check if file is sensible and maybe skip bom
|
|
if ((*size = fread(b, 1, 4, f)) == 4) {
|
|
if (b[0] == 0xEF && b[1] == 0xBB && b[2] == 0xBF) {
|
|
// got an utf8 file with bom
|
|
// nothing further to do, already skipped the bom
|
|
fseek(f, -1, SEEK_CUR);
|
|
} else {
|
|
// oops, not utf8 with bom
|
|
// check if there is some other BOM in place and complain if there is...
|
|
if ((b[0] == 0xFF && b[1] == 0xFE && b[2] == 0x00 && b[3] == 0x00) || // utf32be
|
|
(b[0] == 0x00 && b[1] == 0x00 && b[2] == 0xFE && b[3] == 0xFF) || // utf32le
|
|
(b[0] == 0xFF && b[1] == 0xFE) || // utf16be
|
|
(b[0] == 0xFE && b[1] == 0xFF) || // utf16le
|
|
(b[0] == 0x2B && b[1] == 0x2F && b[2] == 0x76) || // utf7
|
|
(b[0] == 0x00 && b[2] == 0x00) || // looks like utf16be
|
|
(b[1] == 0x00 && b[3] == 0x00)) { // looks like utf16le
|
|
throw _T("The script file uses an unsupported character set. Only UTF-8 is supported.");
|
|
}
|
|
// assume utf8 without bom, and rewind file
|
|
fseek(f, 0, SEEK_SET);
|
|
}
|
|
} else {
|
|
// hmm, rather short file this...
|
|
// doesn't have a bom, assume it's just ascii/utf8 without bom
|
|
return self->databuf; // *size is already set
|
|
}
|
|
self->first = false;
|
|
}
|
|
|
|
*size = fread(b, 1, bufsize, f);
|
|
|
|
return self->databuf;
|
|
}
|
|
|
|
};
|