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https://git.lyx.org/repos/lyx.git
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FindAdv: Remove dead code
+ correct detection of backspaced '{' and '}' in regex with format search enabled
This commit is contained in:
Kornel Benko
parent
96f9c8fb19
commit
3259f3c73e
@ -1136,9 +1136,9 @@ void Paragraph::Private::latexSpecialChar(otexstream & os,
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if (c == '\\')
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os << "\\\\";
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else if (c == '{')
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os << "\\braceleft";
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os << "\\braceleft ";
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else if (c == '}')
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os << "\\braceright";
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os << "\\braceright ";
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else if (c != '\0')
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os.put(c);
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}
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284
src/lyxfind.cpp
284
src/lyxfind.cpp
@ -640,101 +640,6 @@ namespace {
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typedef vector<pair<string, string> > Escapes;
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/// A map of symbols and their escaped equivalent needed within a regex.
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/// @note Beware of order
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/*
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Escapes const & get_regexp_escapes()
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{
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typedef std::pair<std::string, std::string> P;
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static Escapes escape_map;
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if (escape_map.empty()) {
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escape_map.push_back(P("$", "_x_$"));
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escape_map.push_back(P("{", "_x_{"));
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escape_map.push_back(P("}", "_x_}"));
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escape_map.push_back(P("[", "_x_["));
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escape_map.push_back(P("]", "_x_]"));
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escape_map.push_back(P("(", "_x_("));
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escape_map.push_back(P(")", "_x_)"));
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escape_map.push_back(P("+", "_x_+"));
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escape_map.push_back(P("*", "_x_*"));
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escape_map.push_back(P(".", "_x_."));
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escape_map.push_back(P("\\", "(?:\\\\|\\\\backslash)"));
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escape_map.push_back(P("~", "(?:\\\\textasciitilde|\\\\sim)"));
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escape_map.push_back(P("^", "(?:\\^|\\\\textasciicircum\\{\\}|\\\\textasciicircum|\\\\mathcircumflex)"));
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escape_map.push_back(P("_x_", "\\"));
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}
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return escape_map;
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}
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*/
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/// A map of lyx escaped strings and their unescaped equivalent.
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/*
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Escapes const & get_lyx_unescapes()
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{
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typedef std::pair<std::string, std::string> P;
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static Escapes escape_map;
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if (escape_map.empty()) {
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escape_map.push_back(P("\\%", "%"));
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escape_map.push_back(P("\\{", "{"));
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escape_map.push_back(P("\\}", "}"));
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escape_map.push_back(P("\\mathcircumflex ", "^"));
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escape_map.push_back(P("\\mathcircumflex", "^"));
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escape_map.push_back(P("\\backslash ", "\\"));
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escape_map.push_back(P("\\backslash", "\\"));
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escape_map.push_back(P("\\sim ", "~"));
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escape_map.push_back(P("\\sim", "~"));
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}
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return escape_map;
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}
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*/
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/// A map of escapes turning a regexp matching text to one matching latex.
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/*
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Escapes const & get_regexp_latex_escapes()
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{
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typedef std::pair<std::string, std::string> P;
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static Escapes escape_map;
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if (escape_map.empty()) {
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escape_map.push_back(P("\\\\", "(?:\\\\\\\\|\\\\backslash|\\\\textbackslash\\{\\}|\\\\textbackslash)"));
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escape_map.push_back(P("(<?!\\\\\\\\textbackslash)\\{", "\\\\\\{"));
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escape_map.push_back(P("(<?!\\\\\\\\textbackslash\\\\\\{)\\}", "\\\\\\}"));
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escape_map.push_back(P("\\[", "\\{\\[\\}"));
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escape_map.push_back(P("\\]", "\\{\\]\\}"));
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escape_map.push_back(P("\\^", "(?:\\^|\\\\textasciicircum\\{\\}|\\\\textasciicircum|\\\\mathcircumflex)"));
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escape_map.push_back(P("%", "\\\\\\%"));
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escape_map.push_back(P("#", "\\\\#"));
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}
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return escape_map;
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}
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*/
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/** @todo Probably the maps need to be migrated to regexps, in order to distinguish if
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** the found occurrence were escaped.
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**/
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/*
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string apply_escapes(string s, Escapes const & escape_map)
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{
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LYXERR(Debug::FIND, "Escaping: '" << s << "'");
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Escapes::const_iterator it;
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for (it = escape_map.begin(); it != escape_map.end(); ++it) {
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// LYXERR(Debug::FIND, "Escaping " << it->first << " as " << it->second);
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unsigned int pos = 0;
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while (pos < s.length() && (pos = s.find(it->first, pos)) < s.length()) {
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s.replace(pos, it->first.length(), it->second);
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LYXERR(Debug::FIND, "After escape: " << s);
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pos += it->second.length();
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// LYXERR(Debug::FIND, "pos: " << pos);
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}
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}
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LYXERR(Debug::FIND, "Escaped : '" << s << "'");
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return s;
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}
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*/
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string string2regex(string in)
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{
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static std::regex specialChars { R"([-[\]{}()*+?.,\^$|#\s\$\\])" };
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@ -780,12 +685,10 @@ string correctRegex(string t, bool withformat)
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if (sub.str(4) == "backslash") {
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replace = "\\";
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if (withformat) {
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// tranforms '\backslash \{' into '\{'
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// transforms '\backslash \{' into '\{'
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// and '\{' into '{'
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sregex_iterator it2 = it;
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++it2;
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smatch sub2 = *it2;
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if ((sub2.str(3) == "{") || (sub2.str(3) == "}")) {
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string next = t.substr(sub.position(2) + sub.str(2).length(), 2);
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if ((next == "\\{") || (next == "\\}")) {
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replace = "";
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backslashed = true;
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}
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@ -859,62 +762,6 @@ bool regex_replace(string const & s, string & t, string const & searchstr,
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return rv;
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}
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#if 0
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/** Checks if supplied string segment is well-formed from the standpoint of matching open-closed braces.
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**
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** Verify that closed braces exactly match open braces. This avoids that, for example,
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** \frac{.*}{x} matches \frac{x+\frac{y}{x}}{z} with .* being 'x+\frac{y'.
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**
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** @param unmatched
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** Number of open braces that must remain open at the end for the verification to succeed.
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**/
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#if QTSEARCH
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bool braces_match(QString const & beg,
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int unmatched = 0)
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#else
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bool braces_match(string const & beg,
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int unmatched = 0)
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#endif
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{
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int open_pars = 0;
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#if QTSEARCH
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LYXERR(Debug::FIND, "Checking " << unmatched << " unmatched braces in '" << beg.toStdString() << "'");
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#else
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LYXERR(Debug::FIND, "Checking " << unmatched << " unmatched braces in '" << beg << "'");
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#endif
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int lastidx = beg.size();
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for (int i=0; i < lastidx; ++i) {
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// Skip escaped braces in the count
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#if QTSEARCH
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QChar c = beg.at(i);
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#else
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char c = beg.at(i);
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#endif
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if (c == '\\') {
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++i;
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if (i >= lastidx)
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break;
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} else if (c == '{') {
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++open_pars;
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} else if (c == '}') {
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if (open_pars == 0) {
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LYXERR(Debug::FIND, "Found unmatched closed brace");
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return false;
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} else
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--open_pars;
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}
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}
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if (open_pars != unmatched) {
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LYXERR(Debug::FIND, "Found " << open_pars
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<< " instead of " << unmatched
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<< " unmatched open braces at the end of count");
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return false;
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}
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LYXERR(Debug::FIND, "Braces match as expected");
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return true;
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}
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#endif
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class MatchResult {
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public:
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enum range {
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@ -3199,68 +3046,6 @@ MatchStringAdv::MatchStringAdv(lyx::Buffer & buf, FindAndReplaceOptions & opt)
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}
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}
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#if 0
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// Count number of characters in string
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// {]} ==> 1
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// \& ==> 1
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// --- ==> 1
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// \\[a-zA-Z]+ ==> 1
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#if QTSEARCH
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static int computeSize(QStringRef s, int len)
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#define isLyxAlpha(arg) arg.isLetter()
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#else
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static int computeSize(string s, int len)
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#define isLyxAlpha(arg) isalpha(arg)
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#endif
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{
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if (len == 0)
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return 0;
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int skip = 1;
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int count = 0;
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for (int i = 0; i < len; i += skip, count++) {
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if (s.at(i) == '\\') {
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skip = 2;
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if (i + 1 < len && isLyxAlpha(s.at(i+1))) {
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for (int j = 2; i+j < len; j++) {
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if (! isLyxAlpha(s.at(i+j))) {
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if (s.at(i+j) == ' ')
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skip++;
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else if (s.at(i+j) == '{') {
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if (i+j+1 < len && s.at(i+j+1) == '}')
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skip += 2;
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else if (i + j + 1 >= len)
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skip++;
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}
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break;
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}
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skip++;
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}
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}
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}
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else if (s.at(i) == '{') {
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if (i + 1 < len && s.at(i+1) == '}')
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skip = 2;
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else
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skip = 3;
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}
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else if (s.at(i) == '-') {
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if (i+1 < len && s.at(i+1) == '-') {
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if (i + 2 < len && s.at(i+2) == '-')
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skip = 3;
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else
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skip = 2;
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}
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else
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skip = 1;
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}
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else {
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skip = 1;
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}
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}
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return count;
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}
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#endif
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MatchResult MatchStringAdv::findAux(DocIterator const & cur, int len, bool at_begin) const
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{
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MatchResult mres;
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@ -3272,10 +3057,7 @@ MatchResult MatchStringAdv::findAux(DocIterator const & cur, int len, bool at_be
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docstring docstr = stringifyFromForSearch(opt, cur, len);
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string str;
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if (use_regexp || opt.casesensitive)
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str = normalize(docstr);
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else
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str = normalize(lowercase(docstr));
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if (!opt.ignoreformat) {
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str = correctlanguagesetting(str, false, !opt.ignoreformat);
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// remove closing '}' and '\n' to allow for use of '$' in regex
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@ -3293,7 +3075,9 @@ MatchResult MatchStringAdv::findAux(DocIterator const & cur, int len, bool at_be
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LYXERR(Debug::FIND, "Matching against '" << lyx::to_utf8(docstr) << "'");
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LYXERR(Debug::FIND, "After normalization: '" << str << "'");
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if (use_regexp) {
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LASSERT(use_regexp, /**/);
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{
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// use_regexp always true
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LYXERR(Debug::FIND, "Searching in regexp mode: at_begin=" << at_begin);
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#if QTSEARCH
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QString qstr = QString::fromStdString(str);
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@ -3417,34 +3201,6 @@ MatchResult MatchStringAdv::findAux(DocIterator const & cur, int len, bool at_be
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#endif
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return mres;
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}
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// else !use_regexp: but all code paths above return
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LYXERR(Debug::FIND, "Searching in normal mode: par_as_string='"
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<< par_as_string << "', str='" << str << "'");
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LYXERR(Debug::FIND, "Searching in normal mode: lead_as_string='"
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<< lead_as_string << "', par_as_string_nolead='"
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<< par_as_string_nolead << "'");
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if (at_begin) {
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LYXERR(Debug::FIND, "size=" << par_as_string.size()
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<< ", substr='" << str.substr(0, par_as_string.size()) << "'");
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if (str.substr(0, par_as_string.size()) == par_as_string) {
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mres.match_len = par_as_string.size();
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mres.match2end = str.size();
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mres.pos = 0;
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return mres;
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}
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} else {
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// Start the search _after_ the leading part
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size_t pos = str.find(par_as_string_nolead, lead_as_string.size());
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if (pos != string::npos) {
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mres.match_len = par_as_string.size();
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mres.match2end = str.size() - pos;
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mres.pos = pos;
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return mres;
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}
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}
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return mres;
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}
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@ -3749,29 +3505,9 @@ MatchResult &findAdvFinalize(DocIterator & cur, MatchStringAdv const & match, Ma
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int len = 1;
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if (cur.pos() + len > cur.lastpos())
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return fail;
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// regexp should use \w+, \S+, or \b(some string)\b
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// to search for whole words
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if (match.opt.matchword && !match.use_regexp) {
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LYXERR(Debug::FIND, "verifying unmatch with len = " << len);
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while (cur.pos() + len <= cur.lastpos() && match(cur, len).match_len <= 0) {
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++len;
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LYXERR(Debug::FIND, "verifying unmatch with len = " << len);
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}
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// Length of matched text (different from len param)
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static MatchResult old_match = match(cur, len, at_begin);
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if (old_match.match_len < 0)
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old_match = fail;
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MatchResult new_match;
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// Greedy behaviour while matching regexps
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while ((new_match = match(cur, len + 1, at_begin)).match_len > old_match.match_len) {
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++len;
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old_match = new_match;
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LYXERR(Debug::FIND, "verifying match with len = " << len);
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}
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displayMres(old_match, "SEARCH RESULT", cur)
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return old_match;
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}
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else {
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LASSERT(match.use_regexp, /**/);
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{
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int minl = 1;
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int maxl = cur.lastpos() - cur.pos();
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// Greedy behaviour while matching regexps
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@ -4120,7 +3856,6 @@ static void changeFirstCase(Buffer & buffer, TextCase first_case, TextCase other
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}
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} // namespace
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#if 1
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static bool replaceMatches(string &t, int maxmatchnum, vector <string> const & replacements)
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{
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// Should replace the string "$" + std::to_string(matchnum) with replacement
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@ -4148,7 +3883,6 @@ static bool replaceMatches(string &t, int maxmatchnum, vector <string> const & r
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t = s;
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return true;
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}
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#endif
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///
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static int findAdvReplace(BufferView * bv, FindAndReplaceOptions const & opt, MatchStringAdv & matchAdv)
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