Aegisub/athenasub/src/formats/format_ass.cpp

445 lines
12 KiB
C++

// Copyright (c) 2008, 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/ATHENASUB
//
// Website: http://www.aegisub.net
// Contact: mailto:amz@aegisub.net
//
#include "section.h"
#include "model.h"
#include "format_ass.h"
#include "format_ass_plain.h"
#include "version.h"
#include "../text_reader.h"
#include "../reader.h"
#include "../text_writer.h"
#include "../writer.h"
#include <iostream>
#include <algorithm>
#include <wx/tokenzr.h>
using namespace Athenasub;
///////
// SSA
StringArray FormatSSA::GetReadExtensions() const
{
StringArray final;
final.push_back(".ssa");
return final;
}
StringArray FormatSSA::GetWriteExtensions() const
{
return GetReadExtensions();
}
///////
// ASS
StringArray FormatASS::GetReadExtensions() const
{
StringArray final;
final.push_back(".ass");
return final;
}
StringArray FormatASS::GetWriteExtensions() const
{
return GetReadExtensions();
}
////////
// ASS2
StringArray FormatASS2::GetReadExtensions() const
{
StringArray final;
final.push_back(".ass");
return final;
}
StringArray FormatASS2::GetWriteExtensions() const
{
return GetReadExtensions();
}
//////////////////////////////////
// Check if it can read this file
float FormatASSFamily::CanReadFile(Reader &file) const
{
// Check header
if (!file->HasMoreLines()) return 0.0f;
String line = file->ReadLineFromFile();
line.AsciiMakeLower();
if (line != "[script info]") return 0.0f;
float version = 0.0f;
float sections = 0.25f;
String section = line;
for (int i=0; i < 100 && file->HasMoreLines(); i++) {
// Get line
line = file->ReadLineFromFile();
line.AsciiMakeLower();
// Set section
if (line[0] == '[' && line[line.Length()-1] == ']') section = line;
// Check version
if (section == "[script info]") {
if (line.StartsWith("scripttype")) {
int formatVersion = GetVersion();
String expected = "";
switch (formatVersion) {
case 0: expected = "v4.00"; break;
case 1: expected = "v4.00+"; break;
case 2: expected = "v4.00++"; break;
}
if (line.EndsWith(expected)) version = 0.5f;
else version = 0.25f;
}
}
// Done when events begin
if (section == "[events]") {
sections += 0.25f;
break;
}
}
// OK
return sections+version;
}
///////////////
// Constructor
FormatHandlerASS::FormatHandlerASS(int version)
: CFormatHandler(), formatVersion(version)
{
}
//////////////
// Destructor
FormatHandlerASS::~FormatHandlerASS()
{
}
///////////////
// Load a file
void FormatHandlerASS::Load(IModel &model,Reader reader)
{
// Variables
int version = 1;
String curGroup = "-";
String prevGroup = "-";
Section section = Section();
// Read file
while (reader->HasMoreLines()) {
// Read a line
String cur = reader->ReadLineFromFile();
if (cur.IsEmpty()) continue;
// Process group
prevGroup = curGroup;
ProcessGroup(cur,curGroup,version);
// Insert group if it doesn't already exist
if (prevGroup != curGroup) section = GetSection(model,curGroup);
if (!section) {
AddSection(model,curGroup);
section = GetSection(model,curGroup);
}
// Skip [] lines
if (cur[0] == L'[') continue;
// Create and insert line
Entry entry = MakeEntry(cur,section,version);
if (entry) section->AddEntry(entry);
}
// Ensure validity
MakeValid(model);
}
/////////////////////
// Save file to disc
void FormatHandlerASS::Save(const IModel& model,Writer writer) const
{
// Set up list of sections to write
StringArray sections;
sections.push_back("Script Info");
sections.push_back("V4+ Styles");
sections.push_back("Events");
sections.push_back("Fonts");
sections.push_back("Graphics");
// Look for remaining sections
size_t totalSections = GetSectionCount(model);
for (size_t i=0;i<totalSections;i++) {
String name = GetSectionByIndex(model,i)->GetName();
// If not found on the list, add to it
if (find(sections.begin(),sections.end(),name) == sections.end()) {
sections.push_back(name);
}
}
// Write sections
size_t len = sections.size();
for (size_t i=0;i<len;i++) {
// See if it exists
ConstSection section = GetSection(model,sections[i]);
if (section) {
// Add a spacer
if (i != 0) writer->WriteLineToFile("");
// Write the section
WriteSection(writer,section);
}
}
writer->Flush();
}
///////////////
// Create line
Entry FormatHandlerASS::MakeEntry(const String &data,Section section,int version)
{
// Variables
const String group = section->GetName();
Entry final;
// Attachments
if (group == "Fonts" || group == "Graphics") {
final = shared_ptr<PlainASS>(new PlainASS(data));
}
// Events
else if (group == "Events") {
// Dialogue lines
if ((data.StartsWith("Dialogue:") || data.StartsWith("Comment:"))) {
shared_ptr<DialogueASS> diag (new DialogueASS(data,version));
final = diag;
}
// Format lines
else if (data.StartsWith("Format:")) {
section->SetProperty("Format",data.Mid(7).TrimBoth());
}
// Garbage/hard comments
else {
final = shared_ptr<PlainASS>(new PlainASS(data));
}
}
// Styles
else if (group == "V4+ Styles" || group == "V4 Styles+") {
if (data.StartsWith("Style:")) {
shared_ptr<StyleASS> style (new StyleASS(data,version));
final = style;
}
if (data.StartsWith("Format:")) {
section->SetProperty("Format",data.Mid(7).TrimBoth());
}
}
// Script info
else if (group == "Script Info") {
// Discard comments
if (data.StartsWith(";")) return Entry();
// Parse property
size_t pos = data.Find(':');
if (pos == String::npos) return Entry();
String key = data.Left(pos).TrimBoth();
String value = data.Mid(pos+1).TrimBoth();
// Insert property
section->SetProperty(key,value);
return Entry();
}
// Unknown group, just leave it intact
else {
final = shared_ptr<PlainASS>(new PlainASS(data));
}
// Return entry
return final;
}
//////////////////////
// Process group data
void FormatHandlerASS::ProcessGroup(String cur,String &curGroup,int &version) {
// Style conversion
if (!cur.IsEmpty() && cur[0] == '[') {
String low = cur.AsciiLower();
bool changed = true;
// SSA file
if (low == "[v4 styles]") {
cur = "[V4+ Styles]";
curGroup = cur;
version = 0;
}
// ASS file
else if (low == "[v4+ styles]") {
curGroup = cur;
version = 1;
}
// ASS2 file
else if (low == "[v4++ styles]") {
cur = "[V4+ Styles]";
curGroup = cur;
version = 2;
}
// Other groups
else {
String temp = cur;
temp.TrimBoth();
if (temp[temp.Length()-1] == ']') curGroup = cur;
else changed = false;
}
// Normalize group name
if (changed) {
// Get rid of []
curGroup = curGroup.Mid(1,curGroup.Length()-2);
// Normalize case
curGroup.AsciiMakeLower();
String upper = curGroup.AsciiUpper();
bool raise = true;
size_t len = curGroup.Length();
for (size_t i=0;i<len;i++) {
if (raise) {
curGroup[i] = upper[i];
raise = false;
}
if (curGroup[i] == L' ') raise = true;
}
}
}
// Update version with version line
if (curGroup == "Script Info") {
if (cur.StartsWith("scripttype:",false)) {
String versionString = cur.Mid(11);
versionString.TrimBoth();
versionString.AsciiMakeLower();
int trueVersion;
if (versionString == "v4.00") trueVersion = 0;
else if (versionString == "v4.00+") trueVersion = 1;
else if (versionString == "v4.00++") trueVersion = 2;
else THROW_ATHENA_EXCEPTION(Exception::Unknown_Format);
if (trueVersion != version) {
// TODO: issue warning?
version = trueVersion;
}
}
}
}
///////////////////////////////
// Write a section to the file
void FormatHandlerASS::WriteSection(Writer writer,ConstSection section) const
{
// Write name
String name = section->GetName();
writer->WriteLineToFile("[" + name + "]");
// Write program and library credits
if (name == "Script Info") {
String programName = GetHostApplicationName();
String programURL = GetHostApplicationURL();
String libVersion = GetLibraryVersionString();
String libURL = GetLibraryURL();
writer->WriteLineToFile("; Script generated by " + programName);
if (!programURL.IsEmpty()) writer->WriteLineToFile("; " + programURL);
writer->WriteLineToFile("; With " + libVersion);
if (programURL != libURL) writer->WriteLineToFile("; " + libURL);
}
// Write properties
size_t props = section->GetPropertyCount();
for (size_t i=0;i<props;i++) {
String propName = section->GetPropertyName(i);
writer->WriteLineToFile(propName + ": " + section->GetProperty(propName));
}
// Write contents
size_t entries = section->GetEntryCount();
for (size_t i=0;i<entries;i++) {
ConstEntry entry = section->GetEntry(i);
shared_ptr<const SerializeText> serial = dynamic_pointer_cast<const SerializeText>(entry);
writer->WriteLineToFile(serial->ToText(formatVersion));
}
}
///////////////////////
// Validate the format
void FormatHandlerASS::MakeValid(IModel &model)
{
// Only ASS supported right now
if (formatVersion != 1) THROW_ATHENA_EXCEPTION(Exception::TODO);
// Check for [Script Info]
Section section = GetSection(model,"Script Info");
if (!section) section = AddSection(model,"Script Info");
// Check if necessary variables are available
if (section->GetProperty("PlayResX").IsEmpty()) section->SetProperty("PlayResX","384"); // These two mystical values come from Substation Alpha
if (section->GetProperty("PlayResY").IsEmpty()) section->SetProperty("PlayResY","288"); // 288 is half of 576, the PAL resolution, and 384 makes it 4:3
section->SetProperty("ScriptType","v4.00+");
// Get [V4+ Styles]
section = GetSection(model,"V4+ Styles");
if (!section) section = AddSection(model,"V4+ Styles");
section->SetProperty("Format","Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding");
// Get [Events]
section = GetSection(model,"Events");
if (!section) section = AddSection(model,"Events");
section->SetProperty("Format","Layer, Start, End, Style, Actor, MarginL, MarginR, MarginV, Effect, Text");
}