Aegisub/aegisub/src/subtitle_format_ass.cpp

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// Copyright (c) 2006, Rodrigo Braz Monteiro
// 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 subtitle_format_ass.cpp
/// @brief Reading/writing of SSA-lineage subtitles
/// @ingroup subtitle_io
///
#include "config.h"
#include "subtitle_format_ass.h"
#include "ass_dialogue.h"
#include "compat.h"
#include "text_file_reader.h"
#include "text_file_writer.h"
DEFINE_SIMPLE_EXCEPTION(AssParseError, SubtitleFormatParseError, "subtitle_io/parse/ass")
ASSSubtitleFormat::ASSSubtitleFormat()
: SubtitleFormat("Advanced Substation Alpha")
{
}
wxArrayString ASSSubtitleFormat::GetReadWildcards() const {
wxArrayString formats;
formats.Add("ass");
formats.Add("ssa");
return formats;
}
wxArrayString ASSSubtitleFormat::GetWriteWildcards() const {
wxArrayString formats;
formats.Add("ass");
formats.Add("ssa");
return formats;
}
void ASSSubtitleFormat::ReadFile(wxString const& filename, wxString const& encoding) {
using namespace std;
TextFileReader file(filename, encoding);
int version = filename.Right(4).Lower() != ".ssa";
wxString curgroup;
while (file.HasMoreLines()) {
wxString line = file.ReadLineFromFile();
// Make sure that the first non-blank non-comment non-group-header line
// is really [Script Info]
if (curgroup.empty() && !line.empty() && line[0] != ';' && line[0] != '[') {
curgroup = "[Script Info]";
AddLine(curgroup, curgroup, version, &curgroup);
}
// Convert v4 styles to v4+ styles
if (!line.empty() && line[0] == '[') {
// Ugly hacks to allow intermixed v4 and v4+ style sections
wxString low = line.Lower();
if (low == "[v4 styles]") {
line = "[V4+ Styles]";
curgroup = line;
version = 0;
}
else if (low == "[v4+ styles]") {
line = "[V4+ Styles]";
curgroup = line;
version = 1;
}
else if (low == "[v4++ styles]") {
line = "[V4+ Styles]";
curgroup = line;
version = 2;
}
// Not-so-special case for other groups, just set it
else {
curgroup = line;
}
}
try {
AddLine(line, curgroup, version, &curgroup);
}
catch (const char *err) {
Clear();
throw AssParseError("Error processing line: " + STD_STR(line) + ": " + err, 0);
}
}
}
void ASSSubtitleFormat::WriteFile(wxString const& filename, wxString const& encoding) {
TextFileWriter file(filename, encoding);
bool ssa = filename.Right(4).Lower() == ".ssa";
std::list<AssEntry*>::iterator last = Line->end(); --last;
wxString group = Line->front()->group;
for (std::list<AssEntry*>::iterator cur=Line->begin(); cur!=Line->end(); ++cur) {
// Add a blank line between each group
if ((*cur)->group != group) {
file.WriteLineToFile("");
group = (*cur)->group;
}
// Only add a line break if there is a next line
bool lineBreak = cur != last;
// Write line
if (ssa) file.WriteLineToFile((*cur)->GetSSAText(), lineBreak);
else file.WriteLineToFile((*cur)->GetEntryData(), lineBreak);
}
}