Aegisub/aegisub/src/subtitle_format_microdvd.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_microdvd.cpp
/// @brief Reading/writing MicroDVD subtitle format (.SUB)
/// @ingroup subtitle_io
///
///////////
// Headers
#include "config.h"
#ifndef AGI_PRE
#include <wx/regex.h>
#endif
#include "ass_dialogue.h"
#include "ass_time.h"
#include "subtitle_format_microdvd.h"
#include "text_file_reader.h"
#include "text_file_writer.h"
#include "vfr.h"
/// @brief Get format name
/// @return
///
wxString MicroDVDSubtitleFormat::GetName() {
return _T("MicroDVD");
}
/// @brief Get read wildcards
/// @return
///
wxArrayString MicroDVDSubtitleFormat::GetReadWildcards() {
wxArrayString formats;
formats.Add(_T("sub"));
return formats;
}
/// @brief Get write wildcards
/// @return
///
wxArrayString MicroDVDSubtitleFormat::GetWriteWildcards() {
return GetReadWildcards();
}
/// @brief Can read a file?
/// @param filename
/// @return
///
bool MicroDVDSubtitleFormat::CanReadFile(wxString filename) {
// Return false immediately if extension is wrong
if (filename.Right(4).Lower() != _T(".sub")) return false;
// Since there is an infinity of .sub formats, load first line and check if it's valid
TextFileReader file(filename);
if (file.HasMoreLines()) {
wxRegEx exp(_T("^[\\{\\[]([0-9]+)[\\}\\]][\\{\\[]([0-9]+)[\\}\\]](.*)$"),wxRE_ADVANCED);
return exp.Matches(file.ReadLineFromFile());
}
return false;
}
/// @brief Can write a file?
/// @param filename
/// @return
///
bool MicroDVDSubtitleFormat::CanWriteFile(wxString filename) {
return (filename.Right(4).Lower() == _T(".sub"));
}
/// @brief Read a file
/// @param filename
/// @param forceEncoding
/// @return
///
void MicroDVDSubtitleFormat::ReadFile(wxString filename,wxString forceEncoding) {
// Load and prepare regexp
TextFileReader file(filename);
wxRegEx exp(_T("^[\\{\\[]([0-9]+)[\\}\\]][\\{\\[]([0-9]+)[\\}\\]](.*)$"),wxRE_ADVANCED);
// Load default
LoadDefault(false);
// Prepare conversion
FrameRate cfr;
FrameRate *rate = &cfr;
// Loop
bool isFirst = true;
FPSRational fps_rat;
double fps = 0.0;
while (file.HasMoreLines()) {
wxString line = file.ReadLineFromFile();
if (exp.Matches(line)) {
// Parse
long f1,f2;
exp.GetMatch(line,1).ToLong(&f1);
exp.GetMatch(line,2).ToLong(&f2);
wxString text = exp.GetMatch(line,3);
// If it's the first, check if it contains fps information
if (isFirst) {
if (f1 == 1 && f2 == 1) {
// Convert fps
try {
text.ToDouble(&fps);
}
catch (...) {}
}
isFirst = false;
// If it wasn't an fps line, ask the user for it
if (fps <= 0.0) {
fps_rat = AskForFPS();
if (fps_rat.num == 0) return;
else if (fps_rat.num > 0) cfr.SetCFR(double(fps_rat.num)/double(fps_rat.den));
else rate = &VFR_Output;
}
else {
cfr.SetCFR(fps);
continue;
}
}
// Start and end times
int start,end;
start = rate->GetTimeAtFrame(f1,true);
end = rate->GetTimeAtFrame(f2,false);
// Process text
text.Replace(_T("|"),_T("\\N"));
// Create and insert line
AssDialogue *line = new AssDialogue();
line->group = _T("[Events]");
line->Style = _T("Default");
line->Start.SetMS(start);
line->End.SetMS(end);
line->Text = text;
Line->push_back(line);
}
}
}
/// @brief Write a file
/// @param filename
/// @param encoding
///
void MicroDVDSubtitleFormat::WriteFile(wxString filename,wxString encoding) {
// Set FPS
FrameRate cfr;
FrameRate *rate = &cfr;
FPSRational fps_rat = AskForFPS();
if (fps_rat.num == 0 || fps_rat.den == 0) return;
double fps = double(fps_rat.num) / double(fps_rat.den);
if (fps > 0.0) cfr.SetCFR(fps);
else rate = &VFR_Output;
// Convert file
CreateCopy();
SortLines();
StripComments();
RecombineOverlaps();
MergeIdentical();
ConvertTags(1,_T("|"));
// Open file
TextFileWriter file(filename,encoding);
// Write FPS line
if (rate->GetFrameRateType() != VFR) {
file.WriteLineToFile(wxString::Format(_T("{1}{1}%.6f"),rate->GetAverage()));
}
// Write lines
using std::list;
for (list<AssEntry*>::iterator cur=Line->begin();cur!=Line->end();cur++) {
AssDialogue *current = dynamic_cast<AssDialogue*>(*cur);
if (current && !current->Comment) {
// Prepare data
int start = rate->GetFrameAtTime(current->Start.GetMS(),true);
int end = rate->GetFrameAtTime(current->End.GetMS(),false);
// Write data
file.WriteLineToFile(wxString::Format(_T("{%i}{%i}%s"),start,end,current->Text.c_str()));
}
}
// Clean up
ClearCopy();
}