Add an option to skip override tags when searching. Closes #104.

aegisub/src/dialog_search_replace.cpp

@@ -57,6 +57,7 @@ DialogSearchReplace::DialogSearchReplace(agi::Context* c, bool replace)
 	settings->match_case = OPT_GET("Tool/Search Replace/Match Case")->GetBool();
 	settings->use_regex = OPT_GET("Tool/Search Replace/RegExp")->GetBool();
 	settings->ignore_comments = OPT_GET("Tool/Search Replace/Skip Comments")->GetBool();
+	settings->skip_tags = OPT_GET("Tool/Search Replace/Skip Tags")->GetBool();
 
 	auto find_sizer = new wxFlexGridSizer(2, 2, 5, 15);
 	find_edit = new wxComboBox(this, -1, "", wxDefaultPosition, wxSize(300, -1), recent_find, wxCB_DROPDOWN, wxGenericValidator(&settings->find));
@@ -72,7 +73,8 @@ DialogSearchReplace::DialogSearchReplace(agi::Context* c, bool replace)
 	auto options_sizer = new wxBoxSizer(wxVERTICAL);
 	options_sizer->Add(new wxCheckBox(this, -1, _("&Match case"), wxDefaultPosition, wxDefaultSize, 0, wxGenericValidator(&settings->match_case)), wxSizerFlags().Border(wxBOTTOM));
 	options_sizer->Add(new wxCheckBox(this, -1, _("&Use regular expressions"), wxDefaultPosition, wxDefaultSize, 0, wxGenericValidator(&settings->use_regex)), wxSizerFlags().Border(wxBOTTOM));
-	options_sizer->Add(new wxCheckBox(this, -1, _("&Skip Comments"), wxDefaultPosition, wxDefaultSize, 0, wxGenericValidator(&settings->ignore_comments)));
+	options_sizer->Add(new wxCheckBox(this, -1, _("&Skip Comments"), wxDefaultPosition, wxDefaultSize, 0, wxGenericValidator(&settings->ignore_comments)), wxSizerFlags().Border(wxBOTTOM));
+	options_sizer->Add(new wxCheckBox(this, -1, _("S&kip Override Tags"), wxDefaultPosition, wxDefaultSize, 0, wxGenericValidator(&settings->skip_tags)));
 
 	auto left_sizer = new wxBoxSizer(wxVERTICAL);
 	left_sizer->Add(find_sizer, wxSizerFlags().DoubleBorder(wxBOTTOM));
@@ -134,6 +136,7 @@ void DialogSearchReplace::FindReplace(bool (SearchReplaceEngine::*func)()) {
 	OPT_SET("Tool/Search Replace/Match Case")->SetBool(settings->match_case);
 	OPT_SET("Tool/Search Replace/RegExp")->SetBool(settings->use_regex);
 	OPT_SET("Tool/Search Replace/Skip Comments")->SetBool(settings->ignore_comments);
+	OPT_SET("Tool/Search Replace/Skip Tags")->SetBool(settings->skip_tags);
 	OPT_SET("Tool/Search Replace/Field")->SetInt(static_cast<int>(settings->field));
 	OPT_SET("Tool/Search Replace/Affect")->SetInt(static_cast<int>(settings->limit_to));
 

aegisub/src/libresrc/default_config.json

@@ -463,7 +463,8 @@
 			"Field" : 0,
 			"Match Case" : false,
 			"RegExp" : false,
-			"Skip Comments" : false
+			"Skip Comments" : false,
+			"Skip Tags" : false
 		},
 		"Select Lines" : {
 			"Action" : 0,

aegisub/src/libresrc/osx/default_config.json

@@ -463,7 +463,8 @@
 			"Field" : 0,
 			"Match Case" : false,
 			"RegExp" : false,
-			"Skip Comments" : false
+			"Skip Comments" : false,
+			"Skip Tags" : false
 		},
 		"Select Lines" : {
 			"Action" : 0,

aegisub/src/search_replace_engine.cpp

@@ -29,13 +29,15 @@
 #include <wx/msgdlg.h>
 #include <wx/regex.h>
 
+static const size_t bad_pos = -1;
+
 struct MatchState {
 	wxRegEx *re;
 	size_t start, end;
 
 	MatchState() : re(nullptr), start(0), end(-1) { }
-	MatchState(size_t s, size_t e, wxRegEx *re = nullptr) : re(re), start(s), end(e) { }
-	operator bool() { return end != -1; }
+	MatchState(size_t s, size_t e, wxRegEx *re) : re(re), start(s), end(e) { }
+	operator bool() { return end != bad_pos; }
 };
 
 namespace {
@@ -50,32 +52,123 @@ auto get_dialogue_field(AssDialogue *cur, SearchReplaceSettings::Field field) ->
 	throw agi::InternalError("Bad field for search", 0);
 }
 
-std::function<MatchState (const AssDialogue*, size_t)> get_matcher(SearchReplaceSettings::Field field, wxString look_for, bool use_regex, bool match_case, wxRegEx *regex) {
-	if (use_regex) {
+typedef std::function<MatchState (const AssDialogue*, size_t)> matcher;
+
+struct noop_accessor {
+	SearchReplaceSettings::Field field;
+	size_t start;
+
+	wxString get(const AssDialogue *d, size_t s) {
+		start = s;
+		return get_dialogue_field(d, field)->get().substr(s);
+	}
+
+	MatchState make_match_state(size_t s, size_t e, wxRegEx *r = nullptr) {
+		return MatchState(s + start, e + start, r);
+	}
+};
+
+struct skip_tags_accessor {
+	SearchReplaceSettings::Field field;
+	std::vector<std::pair<size_t, size_t>> blocks;
+	size_t start;
+
+	void parse_str(wxString const& str) {
+		blocks.clear();
+
+		size_t ovr_start = bad_pos;
+		size_t i = 0;
+		for (auto const& c : str) {
+			if (c == '{' && ovr_start == bad_pos)
+				ovr_start = i;
+			else if (c == '}' && ovr_start != bad_pos) {
+				blocks.emplace_back(ovr_start, i);
+				ovr_start = bad_pos;
+			}
+			++i;
+		}
+	}
+
+	wxString get(const AssDialogue *d, size_t s) {
+		auto const& str = get_dialogue_field(d, field)->get();
+		parse_str(str);
+
+		wxString out;
+
+		size_t last = s;
+		for (auto const& block : blocks) {
+			if (block.second < s) continue;
+			if (block.first > last)
+				out.append(str.begin() + last, str.begin() + block.first);
+			last = block.second + 1;
+		}
+
+		if (last < str.size())
+			out.append(str.begin() + last, str.end());
+
+		start = s;
+		return out;
+	}
+
+	MatchState make_match_state(size_t s, size_t e, wxRegEx *r = nullptr) {
+		s += start;
+		e += start;
+
+		// Shift the start and end of the match to be relative to the unstripped
+		// match
+		for (auto const& block : blocks) {
+			// Any blocks before start are irrelevant as they're included in `start`
+			if (block.second < s) continue;
+			// Skip over blocks at the very beginning of the match
+			// < should only happen if the cursor was within an override block
+			// when the user started a search
+			if (block.first <= s) {
+				size_t len = block.second - std::max(block.first, s) + 1;
+				s += len;
+				e += len;
+				continue;
+			}
+
+			assert(block.first > s);
+			// Blocks after the match are irrelevant
+			if (block.first >= e) break;
+
+			// Extend the match to include blocks within the match
+			// Note that blocks cannot be partially within the match
+			e += block.second - block.first + 1;
+		}
+		return MatchState(s, e, r);
+	}
+};
+
+template<typename Accessor>
+matcher get_matcher(SearchReplaceSettings const& settings, wxRegEx *regex, Accessor a) {
+	if (settings.use_regex) {
 		int flags = wxRE_ADVANCED;
-		if (!match_case)
+		if (!settings.match_case)
 			flags |= wxRE_ICASE;
 
-		regex->Compile(look_for, flags);
+		regex->Compile(settings.find, flags);
 		if (!regex->IsValid())
 			return [](const AssDialogue*, size_t) { return MatchState(); };
 
-		return [=](const AssDialogue *diag, size_t start) {
-			auto const& str = *get_dialogue_field(diag, field);
-			if (!regex->Matches(str.get().substr(start)))
+		return [=](const AssDialogue *diag, size_t start) mutable -> MatchState {
+			if (!regex->Matches(a.get(diag, start)))
 				return MatchState();
 
 			size_t match_start, match_len;
 			regex->GetMatch(&match_start, &match_len, 0);
-			return MatchState(match_start + start, match_start + match_len + start, regex);
+			return a.make_match_state(match_start, match_start + match_len, regex);
 		};
 	}
 
-	if (!match_case)
+	bool match_case = settings.match_case;
+	wxString look_for = settings.find;
+	if (!settings.match_case)
 		look_for.MakeLower();
 
-	return [=](const AssDialogue *diag, size_t start) {
-		auto str = get_dialogue_field(diag, field)->get().substr(start);
+	return [=](const AssDialogue *diag, size_t start) mutable -> MatchState {
+		auto str = a.get(diag, start);
 		if (!match_case)
 			str.MakeLower();
 
@@ -83,10 +176,20 @@ std::function<MatchState (const AssDialogue*, size_t)> get_matcher(SearchReplace
 		if (pos == wxString::npos)
 			return MatchState();
 
-		return MatchState(pos + start, pos + look_for.size() + start);
+		return a.make_match_state(pos, pos + look_for.size());
 	};
 }
 
+matcher get_matcher(SearchReplaceSettings const& settings, wxRegEx *regex) {
+	if (!settings.skip_tags) {
+		noop_accessor a = { settings.field };
+		return get_matcher(settings, regex, a);
+	}
+
+	skip_tags_accessor a = { settings.field };
+	return get_matcher(settings, regex, a);
+}
+
 template<typename Iterator, typename Container>
 Iterator circular_next(Iterator it, Container& c) {
 	++it;
@@ -123,7 +226,7 @@ bool SearchReplaceEngine::FindReplace(bool replace) {
 		return false;
 
 	wxRegEx r;
-	auto matches = get_matcher(settings.field, settings.find, settings.use_regex, settings.match_case, &r);
+	auto matches = get_matcher(settings, &r);
 
 	AssDialogue *line = context->selectionController->GetActiveLine();
 	auto it = context->ass->Line.iterator_to(*line);
@@ -135,11 +238,11 @@ bool SearchReplaceEngine::FindReplace(bool replace) {
 			pos = context->textSelectionController->GetSelectionStart();
 
 		if ((replace_ms = matches(line, pos))) {
-			size_t end = -1;
+			size_t end = bad_pos;
 			if (settings.field == SearchReplaceSettings::Field::TEXT)
 				end = context->textSelectionController->GetSelectionEnd();
 
-			if (end != -1 || (pos == replace_ms.start && end == replace_ms.end)) {
+			if (end == bad_pos || (pos == replace_ms.start && end == replace_ms.end)) {
 				Replace(line, replace_ms);
 				pos = replace_ms.end;
 				context->ass->Commit(_("replace"), AssFile::COMMIT_DIAG_TEXT);
@@ -202,7 +305,7 @@ bool SearchReplaceEngine::ReplaceAll() {
 	size_t count = 0;
 
 	wxRegEx r;
-	auto matches = get_matcher(settings.field, settings.find, settings.use_regex, settings.match_case, &r);
+	auto matches = get_matcher(settings, &r);
 
 	SubtitleSelection const& sel = context->selectionController->GetSelectedSet();
 	bool selection_only = settings.limit_to == SearchReplaceSettings::Limit::SELECTED;

aegisub/src/search_replace_engine.h

@@ -42,6 +42,7 @@ struct SearchReplaceSettings {
 	bool match_case;
 	bool use_regex;
 	bool ignore_comments;
+	bool skip_tags;
 };
 
 class SearchReplaceEngine {