Aegisub/aegisub/src/subtitle_format.h

143 lines
5.2 KiB
C++

// 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.h
/// @see subtitle_format.cpp
/// @ingroup subtitle_io
///
#pragma once
#ifndef AGI_PRE
#include <list>
#include <wx/arrstr.h>
#include <wx/string.h>
#endif
#include <libaegisub/exception.h>
class AssEntry;
class AssFile;
class FractionalTime;
/// DOCME
/// @class SubtitleFormat
/// @brief DOCME
///
/// DOCME
class SubtitleFormat {
wxString name;
/// Get this format's wildcards for a load dialog
virtual wxArrayString GetReadWildcards() const { return wxArrayString(); }
/// Get this format's wildcards for a save dialog
virtual wxArrayString GetWriteWildcards() const { return wxArrayString(); }
/// List of loaded subtitle formats
static std::list<SubtitleFormat*> formats;
protected:
typedef std::list<AssEntry*> LineList;
/// Strip override tags
void StripTags(LineList &lines) const;
/// Convert newlines to the specified character(s)
/// @param lineEnd newline character(s)
/// @param mergeLineBreaks Should multiple consecutive line breaks be merged into one?
void ConvertNewlines(LineList &lines, wxString const& newline, bool mergeLineBreaks = true) const;
/// Remove All commented and empty lines
void StripComments(LineList &lines) const;
/// Remove everything but the dialogue lines
void StripNonDialogue(LineList &lines) const;
/// @brief Split and merge lines so there are no overlapping lines
///
/// Algorithm described at http://devel.aegisub.org/wiki/Technical/SplitMerge
void RecombineOverlaps(LineList &lines) const;
/// Merge sequential identical lines
void MergeIdentical(LineList &lines) const;
/// Prompt the user for a framerate to use
/// @param showSMPTE Include SMPTE as an option?
FractionalTime AskForFPS(bool showSMPTE=false) const;
public:
/// Constructor
/// @param Subtitle format name
/// @note Automatically registers the format
SubtitleFormat(wxString const& name);
/// Destructor
/// @note Automatically unregisters the format
virtual ~SubtitleFormat();
/// Get this format's name
wxString GetName() const { return name; }
/// @brief Check if the given file can be read by this format
///
/// Default implement ion simply checks if the file's extension is in the
/// format's wildcard list
virtual bool CanReadFile(wxString const& filename) const;
/// @brief Check if the given file can be written by this format
///
/// Default implement ion simply checks if the file's extension is in the
/// format's wildcard list
virtual bool CanWriteFile(wxString const& filename) const;
/// Load a subtitle file
/// @param[out] target Destination to read lines into
/// @param filename File to load
/// @param forceEncoding Encoding to use or empty string for default
virtual void ReadFile(AssFile *target, wxString const& filename, wxString const& forceEncoding="") const { }
/// Save a subtitle file
/// @param src Data to write
/// @param filename File to write to
/// @param forceEncoding Encoding to use or empty string for default
virtual void WriteFile(const AssFile *src, wxString const& filename, wxString const& encoding="") const { }
/// Get the wildcards for a save or load dialog
/// @param mode 0: load 1: save
static wxString GetWildcards(int mode);
/// Get a subtitle format that can read the given file or NULL if none can
static const SubtitleFormat *GetReader(wxString const& filename);
/// Get a subtitle format that can write the given file or NULL if none can
static const SubtitleFormat *GetWriter(wxString const& filename);
/// Initialize subtitle formats
static void LoadFormats();
/// Deinitialize subtitle formats
static void DestroyFormats();
};
DEFINE_SIMPLE_EXCEPTION(SubtitleFormatParseError, agi::InvalidInputException, "subtitle_io/parse/generic")