Aegisub/aegisub/src/ass_file.h

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// Copyright (c) 2005, 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/
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//
// $Id$
/// @file ass_file.h
/// @see ass_file.cpp
/// @ingroup subs_storage
///
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#pragma once
#ifndef AGI_PRE
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#include <fstream>
#include <list>
#include <vector>
#include <wx/arrstr.h>
#endif
#include <libaegisub/signal.h>
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class FrameRate;
class AssDialogue;
class AssStyle;
class AssAttachment;
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class AssDialogueBlock;
class AssDialogueBlockOverride;
class AssDialogueBlockPlain;
class AssEntry;
typedef std::list<AssEntry*>::iterator entryIter;
/// DOCME
/// @class AssFile
/// @brief DOCME
///
/// DOCME
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class AssFile {
std::list<AssFile> UndoStack;
std::list<AssFile> RedoStack;
wxString undoDescription;
/// Revision counter for undo coalescing and modified state tracking
int commitId;
/// Last saved version of this file
int savedCommitId;
/// Last autosaved version of this file
int autosavedCommitId;
/// A set of changes has been committed to the file (AssFile::CommitType)
agi::signal::Signal<int> AnnounceCommit;
/// A new file has been opened (filename)
agi::signal::Signal<wxString> FileOpen;
/// The file is about to be saved
/// This signal is intended for adding metadata such as video filename,
/// frame number, etc. Ideally this would all be done immediately rather
/// than waiting for a save, but that causes (more) issues with undo
agi::signal::Signal<> FileSave;
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public:
/// The lines in the file
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std::list<AssEntry*> Line;
/// The filename of this file, if any
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wxString filename;
/// Is the file loaded?
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bool loaded;
AssFile();
AssFile(const AssFile &from);
AssFile& operator=(AssFile from);
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~AssFile();
/// Does the file have unsaved changes?
bool IsModified() const {return commitId != savedCommitId; };
/// Clear the file
void Clear();
/// @brief Load default file
/// @param defline Add a blank line to the file
void LoadDefault(bool defline=true);
/// Add a style to the file
void InsertStyle(AssStyle *style);
/// Add an attachment to the file
void InsertAttachment(AssAttachment *attach);
/// Attach a file to the ass file
void InsertAttachment(wxString filename);
/// Get the names of all of the styles available
wxArrayString GetStyles();
/// @brief Get a style by name
/// @param name Style name
/// @return Pointer to style or NULL
AssStyle *GetStyle(wxString name);
void swap(AssFile &) throw();
/// @brief Load from a file
/// @param file File name
/// @param charset Character set of file or empty to autodetect
/// @param addToRecent Should the file be added to the MRU list?
void Load(const wxString &file,wxString charset="",bool addToRecent=true);
/// @brief Save to a file
/// @param file Path to save to
/// @param setfilename Should the filename be changed to the passed path?
/// @param addToRecent Should the file be added to the MRU list?
/// @param encoding Encoding to use, or empty to let the writer decide (which usually means "App/Save Charset")
void Save(wxString file,bool setfilename=false,bool addToRecent=true,const wxString encoding="");
/// @brief Autosave the file if there have been any chances since the last autosave
/// @return File name used or empty if no save was performed
wxString AutoSave();
/// @brief Save to a memory buffer. Used for subtitle providers which support it
/// @param[out] dst Destination vector
void SaveMemory(std::vector<char> &dst);
/// Add file name to the MRU list
void AddToRecent(wxString file);
/// Can the file be saved in its current format?
bool CanSave();
/// @brief Get the list of wildcards supported
/// @param mode 0 = open, 1 = save, 2 = export
static wxString GetWildcardList(int mode);
/// @brief Get the script resolution
/// @param[out] w Width
/// @param[in] h Height
void GetResolution(int &w,int &h);
/// Get the value in a [Script Info] key as int.
int GetScriptInfoAsInt(const wxString key);
/// Get the value in a [Script Info] key as string.
wxString GetScriptInfo(wxString key);
/// Set the value of a [Script Info] key. Adds it if it doesn't exist.
void SetScriptInfo(wxString const& key, wxString const& value);
// Add a ";" comment in the [Script Info] section
void AddComment(wxString comment);
/// @brief Add a line to the file
/// @param data Full text of ASS line
/// @param[in,out] version ASS version the line was parsed as
/// @param[in,out] attach Accumulator for attachment parsing
void AddLine(wxString data, int *version, AssAttachment **attach);
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/// Type of changes made in a commit
enum CommitType {
/// Potentially the entire file has been changed; any saved information
/// should be discarded. Note that the active line and selected set
/// should not be touched in handlers for this, as they may not have
/// been updated yet
/// Note that it is intentional that this cannot be combined with
/// other commit types
COMMIT_NEW = 0,
/// The order of lines in the file has changed
COMMIT_ORDER = 0x1,
/// The script info section has changed in some way
COMMIT_SCRIPTINFO = 0x2,
/// The styles have changed in some way
COMMIT_STYLES = 0x4,
/// The attachments have changed in some way
COMMIT_ATTACHMENT = 0x8,
/// Dialogue lines have been added or removed
/// Note that if the active dialogue line was removed, the active line
/// should be updated BEFORE committing
COMMIT_DIAG_ADDREM = 0x10,
/// The metadata fields of existing dialogue lines have changed
COMMIT_DIAG_META = 0x20,
/// The start and/or end times of existing dialogue lines have changed
COMMIT_DIAG_TIME = 0x40,
/// The text of existing dialogue lines have changed
COMMIT_DIAG_TEXT = 0x80,
COMMIT_DIAG_FULL = COMMIT_DIAG_META | COMMIT_DIAG_TIME | COMMIT_DIAG_TEXT
};
DEFINE_SIGNAL_ADDERS(AnnounceCommit, AddCommitListener)
DEFINE_SIGNAL_ADDERS(FileOpen, AddFileOpenListener)
DEFINE_SIGNAL_ADDERS(FileSave, AddFileSaveListener)
/// @brief Flag the file as modified and push a copy onto the undo stack
/// @param desc Undo description
/// @param type Type of changes made to the file in this commit
/// @param commitId Commit to amend rather than pushing a new commit
/// @param single_line Line which was changed, if only one line was
/// @return Unique identifier for the new undo group
int Commit(wxString desc, int type, int commitId = -1, AssEntry *single_line = 0);
/// @brief Undo the last set of changes to the file
void Undo();
/// @brief Redo the last undone changes
void Redo();
/// Check if undo stack is empty
bool IsUndoStackEmpty() const { return UndoStack.size() <= 1; };
/// Check if redo stack is empty
bool IsRedoStackEmpty() const { return RedoStack.empty(); };
/// Get the description of the first undoable change
wxString GetUndoDescription() const;
/// Get the description of the first redoable change
wxString GetRedoDescription() const;
/// Current script file. It is "above" the stack.
static AssFile *top;
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/// Comparison function for use when sorting
typedef bool (*CompFunc)(const AssDialogue* lft, const AssDialogue* rgt);
/// @brief Compare based on start time
static bool CompStart(const AssDialogue* lft, const AssDialogue* rgt);
/// @brief Compare based on end time
static bool CompEnd(const AssDialogue* lft, const AssDialogue* rgt);
/// @brief Compare based on end time
static bool CompStyle(const AssDialogue* lft, const AssDialogue* rgt);
/// @brief Sort the dialogue lines in this file
/// @param comp Comparison function to use. Defaults to sorting by start time.
void Sort(CompFunc comp = CompStart);
/// @brief Sort the dialogue lines in the given list
/// @param comp Comparison function to use. Defaults to sorting by start time.
static void Sort(std::list<AssEntry*>& lst, CompFunc comp = CompStart);
/// @brief Sort the dialogue lines in the given list
/// @param comp Comparison function to use. Defaults to sorting by start time.
static void Sort(std::list<AssDialogue*>& lst, CompFunc comp = CompStart);
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};