Aegisub/aegisub/src/ass_karaoke.cpp

// Copyright (c) 2006-2007, Niels Martin Hansen
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// Aegisub Project http://www.aegisub.org/
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// $Id$

/// @file ass_karaoke.cpp
/// @brief Parse and manipulate ASSA karaoke tags
/// @ingroup subs_storage
///


#include "config.h"

#include "ass_karaoke.h"
#include "ass_override.h"


/// @brief DOCME
///
AssKaraokeSyllable::AssKaraokeSyllable()
{
	duration = 0;
	text = _T("");
	unstripped_text = _T("");
	type = _T("");
	tag = 0;
}


/// @brief DOCME
/// @param line 
/// @param syls 
///
void ParseAssKaraokeTags(const AssDialogue *line, AssKaraokeVector &syls)
{
	// Assume line already has tags parsed
	AssKaraokeSyllable syl;

	bool brackets_open = false;

	for (int i = 0; i < (int)line->Blocks.size(); i++) {
		AssDialogueBlock *block = line->Blocks[i];

		switch (block->GetType()) {

			case BLOCK_BASE:
				break;

			case BLOCK_PLAIN:
				syl.text += block->text;
				syl.unstripped_text += block->text;
				break;

			case BLOCK_DRAWING:
				// Regard drawings as tags
				syl.unstripped_text += block->text;
				break; 

			case BLOCK_OVERRIDE: {
				AssDialogueBlockOverride *ovr = dynamic_cast<AssDialogueBlockOverride*>(block);

				for (int j = 0; j < (int)ovr->Tags.size(); j++) {
					AssOverrideTag *tag = ovr->Tags[j];

					if (tag->IsValid() && tag->Name.Mid(0,2).CmpNoCase(_T("\\k")) == 0) {
						// karaoke tag
						if (brackets_open) {
							syl.unstripped_text += _T("}");
							brackets_open = false;
						}
						
						// Store syllable
						syls.push_back(syl);

						syl.text = _T("");
						syl.unstripped_text = _T("");
						syl.tag = tag;
						syl.type = tag->Name;
						syl.duration = tag->Params[0]->Get<int>();

					} else {
						// not karaoke tag
						if (!brackets_open) {
							syl.unstripped_text += _T("{");
							brackets_open = true;
						}
						syl.unstripped_text += *tag;
					}
				}

				if (brackets_open) {
					brackets_open = false;
					syl.unstripped_text += _T("}");
				}

				break;
			}
		}
	}

	syls.push_back(syl);
}