89 lines
2.4 KiB
C++
89 lines
2.4 KiB
C++
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#include "StarText.hpp"
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#include <regex>
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namespace Star {
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namespace Text {
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static auto stripEscapeRegex = std::regex(strf("\\{:c}[^;]*{:c}", CmdEsc, EndEsc));
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String stripEscapeCodes(String const& s) {
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return std::regex_replace(s.utf8(), stripEscapeRegex, "");
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}
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static std::string escapeChars = strf("{:c}{:c}", CmdEsc, StartEsc);
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bool processText(StringView text, TextCallback textFunc, CommandsCallback commandsFunc, bool includeCommandSides) {
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std::string_view escChars(escapeChars);
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std::string_view str = text.utf8();
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while (true) {
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size_t escape = str.find_first_of(escChars);
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if (escape != NPos) {
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escape = str.find_first_not_of(escChars, escape) - 1; // jump to the last ^
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size_t end = str.find_first_of(EndEsc, escape);
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if (end != NPos) {
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if (escape && !textFunc(str.substr(0, escape)))
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return false;
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if (commandsFunc) {
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StringView commands = includeCommandSides
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? str.substr(escape, end - escape + 1)
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: str.substr(escape + 1, end - escape - 1);
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if (!commands.empty() && !commandsFunc(commands))
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return false;
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}
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str = str.substr(end + 1);
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continue;
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}
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}
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if (!str.empty())
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return textFunc(str);
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return true;
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}
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}
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// The below two functions aren't used anymore, not bothering with StringView for them
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String preprocessEscapeCodes(String const& s) {
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bool escape = false;
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std::string result = s.utf8();
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size_t escapeStartIdx = 0;
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for (size_t i = 0; i < result.size(); i++) {
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auto& c = result[i];
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if (isEscapeCode(c)) {
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escape = true;
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escapeStartIdx = i;
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}
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if ((c <= SpecialCharLimit) && !(c == StartEsc))
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escape = false;
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if ((c == EndEsc) && escape)
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result[escapeStartIdx] = StartEsc;
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}
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return {result};
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}
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String extractCodes(String const& s) {
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bool escape = false;
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StringList result;
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String escapeCode;
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for (auto c : preprocessEscapeCodes(s)) {
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if (c == StartEsc)
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escape = true;
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if (c == EndEsc) {
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escape = false;
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for (auto command : escapeCode.split(','))
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result.append(command);
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escapeCode = "";
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}
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if (escape && (c != StartEsc))
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escapeCode.append(c);
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}
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if (!result.size())
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return "";
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return "^" + result.join(",") + ";";
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}
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}
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}
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