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
///
///////////
// Headers
#include "config.h"
#include "ass_dialogue.h"
#include "subtitle_format_ass.h"
#include "text_file_reader.h"
#include "text_file_writer.h"
/// @brief Can read?
/// @param filename
/// @return
///
bool ASSSubtitleFormat::CanReadFile(wxString filename) {
return (filename.Right(4).Lower() == ".ass" || filename.Right(4).Lower() == ".ssa");
}
/// @brief Get name
/// @return
///
wxString ASSSubtitleFormat::GetName() {
return "Advanced Substation Alpha";
}
/// @brief Get read wildcards
/// @return
///
wxArrayString ASSSubtitleFormat::GetReadWildcards() {
wxArrayString formats;
formats.Add("ass");
formats.Add("ssa");
return formats;
}
/// @brief Get write wildcards
/// @return
///
wxArrayString ASSSubtitleFormat::GetWriteWildcards() {
wxArrayString formats;
formats.Add("ass");
formats.Add("ssa");
return formats;
}
/// @brief Read file
/// @param filename
/// @param encoding
///
void ASSSubtitleFormat::ReadFile(wxString filename,wxString encoding) {
using namespace std;
// Reader
TextFileReader file(filename,encoding);
int version = 1;
if (filename.Right(4).Lower() == ".ssa") version = 0;
// Parse file
wxString curgroup;
wxString wxbuffer;
while (file.HasMoreLines()) {
// Reads line
wxbuffer = file.ReadLineFromFile();
// Make sure that the first non-blank non-comment non-group-header line
// is really [Script Info]
if (curgroup.IsEmpty() && !wxbuffer.IsEmpty() && wxbuffer[0] != ';' && wxbuffer[0] != '[') {
curgroup = "[Script Info]";
AddLine(curgroup,curgroup,version,&curgroup);
}
// Convert v4 styles to v4+ styles
if (!wxbuffer.IsEmpty() && wxbuffer[0] == '[') {
// Ugly hacks to allow intermixed v4 and v4+ style sections
wxString low = wxbuffer.Lower();
if (low == "[v4 styles]") {
wxbuffer = "[V4+ Styles]";
curgroup = wxbuffer;
version = 0;
}
else if (low == "[v4+ styles]") {
wxbuffer = "[V4+ Styles]";
curgroup = wxbuffer;
version = 1;
}
else if (low == "[v4++ styles]") {
wxbuffer = "[V4+ Styles]";
curgroup = wxbuffer;
version = 2;
}
// Not-so-special case for other groups, just set it
else {
curgroup = wxbuffer;
}
}
// Add line
try {
AddLine(wxbuffer,curgroup,version,&curgroup);
}
catch (const char *err) {
Clear();
throw wxString("Error processing line: ") + wxbuffer + ": " + wxString(err);
}
catch (...) {
Clear();
throw wxString("Error processing line: ") + wxbuffer;
}
}
}
/// @brief Can write to file?
/// @param filename
/// @return
///
bool ASSSubtitleFormat::CanWriteFile(wxString filename) {
return (filename.Right(4).Lower() == ".ass" || filename.Right(4).Lower() == ".ssa");
}
/// @brief Write file
/// @param _filename
/// @param encoding
///
void ASSSubtitleFormat::WriteFile(wxString filename,wxString encoding) {
// Open file
TextFileWriter file(filename,encoding);
bool ssa = filename.Right(4).Lower() == ".ssa";
// Write lines
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);
}
}