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author | Thomas Groman <tgroman@nuegia.net> | 2019-09-19 00:41:48 -0700 |
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committer | Thomas Groman <tgroman@nuegia.net> | 2019-09-19 00:41:48 -0700 |
commit | 32b3ed0a1362a4b0798ad71fac3450fb77cb7e41 (patch) | |
tree | 7be7a2f602e6a5af7bc2db86bef9cf2a659c3d3d /api/logic/translations/POTranslator.cpp | |
parent | 5fb2c6334e7d5237db11695b4c0ec0f2d1e47c88 (diff) | |
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merged from 0.6.7 codebase
Diffstat (limited to 'api/logic/translations/POTranslator.cpp')
-rw-r--r-- | api/logic/translations/POTranslator.cpp | 373 |
1 files changed, 373 insertions, 0 deletions
diff --git a/api/logic/translations/POTranslator.cpp b/api/logic/translations/POTranslator.cpp new file mode 100644 index 00000000..1ffcb9a4 --- /dev/null +++ b/api/logic/translations/POTranslator.cpp @@ -0,0 +1,373 @@ +#include "POTranslator.h" + +#include <QDebug> +#include "FileSystem.h" + +struct POEntry +{ + QString text; + bool fuzzy; +}; + +struct POTranslatorPrivate +{ + QString filename; + QHash<QByteArray, POEntry> mapping; + QHash<QByteArray, POEntry> mapping_disambiguatrion; + bool loaded = false; + + void reload(); +}; + +class ParserArray : public QByteArray +{ +public: + ParserArray(const QByteArray &in) : QByteArray(in) + { + } + bool chomp(const char * data, int length) + { + if(startsWith(data)) + { + remove(0, length); + return true; + } + return false; + } + bool chompString(QByteArray & appendHere) + { + QByteArray msg; + bool escape = false; + if(size() < 2) + { + qDebug() << "String fragment is too short"; + return false; + } + if(!startsWith('"')) + { + qDebug() << "String fragment does not start with \""; + return false; + } + if(!endsWith('"')) + { + qDebug() << "String fragment does not end with \", instead, there is" << at(size() - 1); + return false; + } + for(int i = 1; i < size() - 1; i++) + { + char c = operator[](i); + if(escape) + { + switch(c) + { + case 'r': + msg += '\r'; + break; + case 'n': + msg += '\n'; + break; + case 't': + msg += '\t'; + break; + case 'v': + msg += '\v'; + break; + case 'a': + msg += '\a'; + break; + case 'b': + msg += '\b'; + break; + case 'f': + msg += '\f'; + break; + case '"': + msg += '"'; + break; + case '\\': + msg.append('\\'); + break; + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + { + int octal_start = i; + while ((c = operator[](i)) >= '0' && c <= '7') + { + i++; + if (i == length() - 1) + { + qDebug() << "Something went bad while parsing an octal escape string..."; + return false; + } + } + msg += mid(octal_start, i - octal_start).toUInt(0, 8); + break; + } + case 'x': + { + // chomp the 'x' + i++; + int hex_start = i; + while (isxdigit(operator[](i))) + { + i++; + if (i == length() - 1) + { + qDebug() << "Something went bad while parsing a hex escape string..."; + return false; + } + } + msg += mid(hex_start, i - hex_start).toUInt(0, 16); + break; + } + default: + { + qDebug() << "Invalid escape sequence character:" << c; + return false; + } + } + escape = false; + } + else if(c == '\\') + { + escape = true; + } + else + { + msg += c; + } + } + if(escape) + { + qDebug() << "Unterminated escape sequence..."; + return false; + } + appendHere += msg; + return true; + } +}; + +void POTranslatorPrivate::reload() +{ + QFile file(filename); + if(!file.open(QFile::OpenMode::enum_type::ReadOnly | QFile::OpenMode::enum_type::Text)) + { + qDebug() << "Failed to open PO file:" << filename; + return; + } + + QByteArray context; + QByteArray disambiguation; + QByteArray id; + QByteArray str; + bool fuzzy = false; + bool nextFuzzy = false; + + enum class Mode + { + First, + MessageContext, + MessageId, + MessageString + } mode = Mode::First; + + int lineNumber = 0; + QHash<QByteArray, POEntry> newMapping; + QHash<QByteArray, POEntry> newMapping_disambiguation; + auto endEntry = [&]() { + auto strStr = QString::fromUtf8(str); + // NOTE: PO header has empty id. We skip it. + if(!id.isEmpty()) + { + auto normalKey = context + "|" + id; + newMapping.insert(normalKey, {strStr, fuzzy}); + if(!disambiguation.isEmpty()) + { + auto disambiguationKey = context + "|" + id + "@" + disambiguation; + newMapping_disambiguation.insert(disambiguationKey, {strStr, fuzzy}); + } + } + context.clear(); + disambiguation.clear(); + id.clear(); + str.clear(); + fuzzy = nextFuzzy; + nextFuzzy = false; + }; + while (!file.atEnd()) + { + ParserArray line = file.readLine(); + if(line.endsWith('\n')) + { + line.resize(line.size() - 1); + } + if(line.endsWith('\r')) + { + line.resize(line.size() - 1); + } + + if(!line.size()) + { + // NIL + } + else if(line[0] == '#') + { + if(line.contains(", fuzzy")) + { + nextFuzzy = true; + } + } + else if(line.startsWith('"')) + { + QByteArray temp; + QByteArray *out = &temp; + + switch(mode) + { + case Mode::First: + qDebug() << "Unexpected escaped string during initial state... line:" << lineNumber; + return; + case Mode::MessageString: + out = &str; + break; + case Mode::MessageContext: + out = &context; + break; + case Mode::MessageId: + out = &id; + break; + } + if(!line.chompString(*out)) + { + qDebug() << "Badly formatted string on line:" << lineNumber; + return; + } + } + else if(line.chomp("msgctxt ", 8)) + { + switch(mode) + { + case Mode::First: + break; + case Mode::MessageString: + endEntry(); + break; + case Mode::MessageContext: + case Mode::MessageId: + qDebug() << "Unexpected msgctxt line:" << lineNumber; + return; + } + if(line.chompString(context)) + { + auto parts = context.split('|'); + context = parts[0]; + if(parts.size() > 1 && !parts[1].isEmpty()) + { + disambiguation = parts[1]; + } + mode = Mode::MessageContext; + } + } + else if (line.chomp("msgid ", 6)) + { + switch(mode) + { + case Mode::MessageContext: + case Mode::First: + break; + case Mode::MessageString: + endEntry(); + break; + case Mode::MessageId: + qDebug() << "Unexpected msgid line:" << lineNumber; + return; + } + if(line.chompString(id)) + { + mode = Mode::MessageId; + } + } + else if (line.chomp("msgstr ", 7)) + { + switch(mode) + { + case Mode::First: + case Mode::MessageString: + case Mode::MessageContext: + qDebug() << "Unexpected msgstr line:" << lineNumber; + return; + case Mode::MessageId: + break; + } + if(line.chompString(str)) + { + mode = Mode::MessageString; + } + } + else + { + qDebug() << "I did not understand line: " << lineNumber << ":" << QString::fromUtf8(line); + } + lineNumber++; + } + endEntry(); + mapping = std::move(newMapping); + mapping_disambiguatrion = std::move(newMapping_disambiguation); + loaded = true; +} + +POTranslator::POTranslator(const QString& filename, QObject* parent) : QTranslator(parent) +{ + d = new POTranslatorPrivate; + d->filename = filename; + d->reload(); +} + +QString POTranslator::translate(const char* context, const char* sourceText, const char* disambiguation, int n) const +{ + if(disambiguation) + { + auto disambiguationKey = QByteArray(context) + "|" + QByteArray(sourceText) + "@" + QByteArray(disambiguation); + auto iter = d->mapping_disambiguatrion.find(disambiguationKey); + if(iter != d->mapping_disambiguatrion.end()) + { + auto & entry = *iter; + if(entry.text.isEmpty()) + { + qDebug() << "Translation entry has no content:" << disambiguationKey; + } + if(entry.fuzzy) + { + qDebug() << "Translation entry is fuzzy:" << disambiguationKey << "->" << entry.text; + } + return entry.text; + } + } + auto key = QByteArray(context) + "|" + QByteArray(sourceText); + auto iter = d->mapping.find(key); + if(iter != d->mapping.end()) + { + auto & entry = *iter; + if(entry.text.isEmpty()) + { + qDebug() << "Translation entry has no content:" << key; + } + if(entry.fuzzy) + { + qDebug() << "Translation entry is fuzzy:" << key << "->" << entry.text; + } + return entry.text; + } + return QString(); +} + +bool POTranslator::isEmpty() const +{ + return !d->loaded; +} |