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parser.cpp
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parser.cpp
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// #define POXML_DEBUG
#include "parser.h"
#include <iostream>
#include <stdlib.h>
#include <assert.h>
#include <QDebug>
#include <QFile>
#include <QRegularExpression>
#include <QTextStream>
#include <QXmlStreamReader>
using namespace std;
static int countRev( const QString & str, QChar ch, int idx ) {
const int strLength = str.length();
if ( idx < 0 )
idx += strLength;
else if ( idx >= strLength )
idx = strLength;
int count = 0;
for ( int i = 0 ; i <= idx ; ++i )
count += ( str[i] == ch );
return count;
}
static const char *singletags[] = {"beginpage","imagedata", "colspec", "spanspec",
"anchor", "xref", "area",
"footnoteref", "void", "inlinegraphic",
"glosssee", "graphic", "xi:include",
nullptr};
static const char *cuttingtags[] = {"bridgehead", "trans_comment", "para", "title", "term",
"entry", "contrib", "keyword", "example",
"note", "footnote", "caution",
"informalexample", "remark", "comment",
"imageobject", "varlistentry", "thead",
"tbody", "tgroup", "row", "screenshot", "screeninfo",
"variablelist", "procedure", "step",
"task", "taskrelated", "taskprerequisites", "tasksummary",
"holder", "listitem", "important",
"author", "itemizedlist", "orderedlist",
"caption", "textobject", "mediaobject",
"tip", "glossdef", "inlinemediaobject",
"simplelist", "member", "glossentry",
"areaspec", "corpauthor", "indexterm",
"calloutlist", "callout", "subtitle",
"table", "part", "xi:fallback", "primary",
"secondary", "chapter", "sect1", "sect2",
"figure", "informalfigure", "abstract", "sect3", "sect", "sect4",
"warning", "preface", "authorgroup", "keywordset",
"informaltable", "qandaentry", "question", "answer",
"othercredit", "affiliation", "qandaset",
"cmdsynopsis", "funcsynopsis", "funcsynopsisinfo" ,
"epigraph", "attribution", "glossary", "chapterinfo",
"glossdiv", "blockquote", "simplesect", "section",
"qandadiv", "refsect1", "refmeta", "formalpara",
"refentry", "refnamediv", "refpurpose", "refentrytitle",
"refmiscinfo", "refsect2", "refsect3", "refsect1info",
"refsect2info", "refsect3info", "refsection", "refsectioninfo",
"refsynopsisdiv", "refsysnopsisdivinfo", "remark",
"revdescription", "glossentry", "partinfo",
"segmentedlist", "segtitle", "seg", "seglistitem", "screenco",
"titleabbrev", "date", "authorinitials", "holder", "releaseinfo",
nullptr};
static const char *literaltags[] = {"literallayout", "synopsis", "screen",
"programlisting", nullptr};
void StructureParser::startDocument()
{
infos_reg = QRegularExpression(QStringLiteral("\\s*poxml_line=\"(\\d+)\" poxml_col=\"(\\d+)\""));
do_not_split_reg = QRegularExpression(QStringLiteral("\\s*condition=\"do-not-split\""));
message = QString();
inside = 0;
}
bool StructureParser::isCuttingTag(const QString &qName)
{
int index = 0;
while (cuttingtags[index]) {
if (QLatin1String(cuttingtags[index]) == qName)
return true;
index++;
}
return isLiteralTag(qName);
}
bool StructureParser::isSingleTag(QStringView qName)
{
int index = 0;
while (singletags[index]) {
if (QLatin1String(singletags[index]) == qName)
return true;
index++;
}
return false;
}
bool StructureParser::isLiteralTag(const QString &qName)
{
int index = 0;
while (literaltags[index]) {
if (QLatin1String(literaltags[index]) == qName)
return true;
index++;
}
return false;
}
void StructureParser::skippedEntity ( QStringView name )
{
if (inside)
message += QString::fromLatin1("&%1;").arg(name);
}
void StructureParser::startElement( int lineNumber, int columnNumber, QStringView qName, const QXmlStreamAttributes & attr )
{
const QString tname = qName.toString().toLower();
bool first = false;
if (isCuttingTag(tname)) {
if (!inside) {
message = QString();
list.pc.increasePara();
startline = lineNumber;
startcol = columnNumber;
first = true;
}
inside++;
}
if (inside)
{
QString tmp = QLatin1Char('<') + tname;
for (int i = 0; i < attr.length(); i++) {
tmp += QString::fromLatin1(" %1=\"%2\"").arg(attr[i].qualifiedName(), attr[i].value());
}
tmp += QString::fromLatin1(" poxml_line=\"%1\"").arg(lineNumber);
tmp += QString::fromLatin1(" poxml_col=\"%1\"").arg(columnNumber);
if (isSingleTag(qName))
tmp += QString::fromLatin1("/>");
else
tmp += QLatin1Char('>');
message += tmp;
if (first)
startcol -= message.length();
}
if (tname == QLatin1String("anchor") || QStringView(tname).left(4) == QLatin1String("sect") || tname == QLatin1String("chapter"))
if (!attr.value("id").isEmpty()) list.pc.addAnchor(attr.value("id").toString());
}
bool StructureParser::isClosure(const QString &message)
{
assert(message.at(0) == QLatin1Char('<'));
int endindex = 1;
while (!message.at(endindex).isSpace() && message.at(endindex) != QLatin1Char('>'))
endindex++;
QString tag = message.mid(1, endindex - 1);
return closureTag(message, tag);
}
bool StructureParser::closureTag(const QString& message, const QString &tag)
{
#ifdef POXML_DEBUG
qDebug("closureTag %s %s", qPrintable(message), qPrintable(tag));
#endif
int inside = 0;
int index = 0;
const int messageLength = message.length();
while (true)
{
int nextclose = message.indexOf(QRegularExpression(QString::fromLatin1("</%1[\\s>]").arg(tag)), index);
int nextstart = message.indexOf(QRegularExpression(QString::fromLatin1("<%1[>\\s]").arg(tag)), index);
// qDebug("finding %d %d %d %d", nextstart, nextclose, index, inside);
if (nextclose == -1) {
#ifdef POXML_DEBUG
qDebug("ending on no close anymore %d %d %d %d", (!inside && index >= messageLength), inside, index, messageLength);
#endif
return !inside && index >= messageLength;
}
if (nextstart == -1)
nextstart = messageLength + 1;
if (nextstart < nextclose) {
inside++;
index = nextstart + 1;
index = message.indexOf(QLatin1Char('>'), index);
index++;
} else {
inside--;
index = nextclose + 1;
index = message.indexOf(QLatin1Char('>'), index);
index++;
if (!inside) {
#ifdef POXML_DEBUG
qDebug("ending on exit %d", index >= messageLength);
#endif
return index >= messageLength;
}
}
}
}
void StructureParser::descape(QString &message)
{
int index = 0;
stripWhiteSpace( message );
int inside = 0;
bool lastws = false;
while (index < message.length()) {
switch (message.at(index).toLatin1()) {
case '\n':
case '\t':
case '\r':
if (!inside)
message[index] = QLatin1Char(' ');
case ' ':
if (!inside && lastws)
message[index] = QLatin1Char('\010');
lastws = true;
break;
case '<': {
int endindex = index+1;
while (endindex < message.length() && !message.at(endindex).isSpace() &&
message.at(endindex) != QLatin1Char('>'))
endindex++;
QString tag = message.mid(index + 1, endindex - index - 1);
if (tag.at(0) == QLatin1Char('/')) {
if (isLiteralTag(tag.mid(1)))
inside--;
} else
if (isLiteralTag(tag))
inside++;
break;
}
default:
lastws = false;
}
index++;
}
message.remove(QLatin1Char('\010'));
}
bool StructureParser::formatMessage(MsgBlock &msg) const
{
#ifdef POXML_DEBUG
qDebug("formatMessage %s", qPrintable(msg.msgid));
#endif
int offset = 0;
bool changed = false;
bool recurse = true;
if (msg.msgid.isEmpty())
return true;
for (int index = 0; msg.msgid.at(index) == QLatin1Char(' '); index++, offset++)
;
stripWhiteSpace( msg.msgid );
// removing starting single tags
for (int index = 0; singletags[index]; index++)
{
int slen = strlen(singletags[index]);
if (!msg.msgid.isEmpty() &&
msg.msgid.at(0) == QLatin1Char('<') && QStringView(msg.msgid).mid(1, slen) == QLatin1String(singletags[index]) &&
!msg.msgid.at( slen + 1 ).isLetterOrNumber() )
{
#ifdef POXML_DEBUG
qDebug("removing single tag %s", singletags[index]);
#endif
int strindex = slen + 1;
strindex = msg.msgid.indexOf(QLatin1Char('>'), strindex);
msg.msgid = msg.msgid.mid(strindex + 1);
changed = true;
offset += strindex + 1;
for (int index = 0; index < msg.msgid.length() && msg.msgid.at(index) == QLatin1Char(' '); index++, offset++)
;
stripWhiteSpace( msg.msgid );
}
}
while (msg.msgid.right(2) == QStringLiteral("/>") && msg.msgid.startsWith(QLatin1Char('<')))
{
int strindex = msg.msgid.length() - 2;
strindex = msg.msgid.lastIndexOf(QLatin1Char('<'), strindex);
msg.msgid = msg.msgid.left(strindex);
stripWhiteSpace( msg.msgid ); // only removed space at the end
changed = true;
}
for (int index = 0; index < msg.msgid.length() && msg.msgid.at(index) == QLatin1Char(' '); index++, offset++)
;
stripWhiteSpace( msg.msgid );
while (true) {
if (msg.msgid.isEmpty() || msg.msgid.at(0) != QLatin1Char('<'))
break;
if (msg.msgid.at(msg.msgid.length() - 1) != QLatin1Char('>'))
break;
int strindex = 1;
while (msg.msgid.at(strindex) != QLatin1Char(' ') && msg.msgid.at(strindex) != QLatin1Char('>'))
strindex++;
QString starttag = msg.msgid.mid(1, strindex - 1);
int endindex = msg.msgid.length() - 2;
while (msg.msgid.at(endindex) != QLatin1Char('<') && msg.msgid.at(endindex + 1) != QLatin1Char('/'))
endindex--;
#ifdef POXML_DEBUG
qDebug("endIndex %d", endindex);
#endif
strindex = endindex;
QString orig = msg.msgid;
QString endtag = msg.msgid.mid(endindex + 2, msg.msgid.length() - (endindex + 2) - 1);
QString endtag_attr = endtag.mid(endtag.indexOf(QLatin1Char(' ')), endtag.length());
endtag.remove(infos_reg);
if (endtag == starttag) {
if (!closureTag(msg.msgid, starttag))
break;
// removing start/end tags
msg.msgid = msg.msgid.left(endindex);
strindex = msg.msgid.indexOf(QLatin1Char('>'), 0);
QString attr = msg.msgid.left(strindex);
QString real_attr = attr.mid(starttag.length() + 1);
const int real_attr_infos_reg_pos = infos_reg.match(real_attr).capturedStart();
if (real_attr_infos_reg_pos >= 0) {
real_attr = real_attr.left(real_attr_infos_reg_pos);
}
msg.msgid = msg.msgid.mid(strindex + 1);
msg.attrs = real_attr;
offset += strindex + 1;
for (int index = 0; index < msg.msgid.length() && msg.msgid.at(index) == QLatin1Char(' '); index++, offset++)
;
stripWhiteSpace( msg.msgid );
msg.tag = starttag;
if (const auto match = infos_reg.match(attr); match.hasMatch()) {
msg.lines.first().start_line = match.capturedView(1).toInt();
msg.lines.first().start_col = match.capturedView(2).toInt();
#ifdef POXML_DEBUG
qDebug("col %s %s %d", qPrintable(attr), qPrintable(msg.msgid), msg.lines.first().start_col);
#endif
offset = 0;
if (const auto match = infos_reg.match(endtag_attr); match.hasMatch()) {
msg.lines.first().end_line = match.capturedView(1).toInt();
msg.lines.first().end_col = match.capturedView(2).toInt() + 1;
}
}
if (do_not_split_reg.match(attr).hasMatch()) {
msg.do_not_split = true;
break;
}
changed = true;
} else
break;
}
#ifdef POXML_DEBUG
qDebug("formatMessage result %s %d %d", qPrintable(msg.msgid), changed && recurse, msg.lines.first().start_col);
#endif
msg.lines.first().offset += offset;
if (msg.do_not_split)
recurse = false;
if (changed && recurse)
formatMessage(msg);
return !recurse; // indicates an abort
}
MsgList StructureParser::splitMessage(const MsgBlock &mb)
{
MsgList result;
MsgBlock msg1 = mb;
MsgBlock msg2 = mb;
QString message = mb.msgid;
#ifdef POXML_DEBUG
qDebug("splitMessage %s", qPrintable(message));
#endif
if (!message.isEmpty() && message.at(0) == QLatin1Char('<')) {
int endindex = 1;
while (!message.at(endindex).isSpace() && message.at(endindex) != QLatin1Char('>'))
endindex++;
QString tag = message.mid(1, endindex - 1);
const int tagLength = tag.length();
if (closureTag(message, tag))
goto error;
if (isCuttingTag(tag))
{
// if the message starts with a cutting tag, this tag has to
// end in between. We split both messages and format them
int strindex = endindex;
strindex++;
int inside = 1;
while (true) {
#ifdef POXML_DEBUG
qDebug("inside %s %d", qPrintable(message.mid(strindex, 35)), inside);
#endif
// the exception for poxml_* attributes is made in the closing tag
int closing_index = message.indexOf(QRegularExpression(QString::fromLatin1("</%1[\\s>]").arg(tag)),
strindex);
int starting_index = message.indexOf(QRegularExpression(QString::fromLatin1("<%1[\\s>]").arg(tag)),
strindex);
#ifdef POXML_DEBUG
qDebug("index1 %d %d %d", closing_index, starting_index, strindex);
#endif
// when a new start was found, we set the start_index after the next match
// (and set strindex to it later - increasing inside)
if (starting_index != -1) {
starting_index += tagLength + 1;
starting_index = message.indexOf(QLatin1Char('>'), starting_index);
starting_index++;
}
#ifdef POXML_DEBUG
qDebug("index %d %d %d", closing_index, starting_index, strindex);
#endif
assert(closing_index != -1);
closing_index += 3 + tagLength;
while (message.at(closing_index - 1) != QLatin1Char('>'))
closing_index++;
if (starting_index == -1) {
strindex = closing_index;
#ifdef POXML_DEBUG
qDebug("set strindex %d", strindex);
#endif
inside--;
if (!inside)
break;
continue;
}
if (closing_index < starting_index)
{
strindex = closing_index;
inside--;
} else {
strindex = starting_index;
inside++;
}
if (!inside)
break;
}
#ifdef POXML_DEBUG
qDebug("split into %s -AAAAAANNNNNNDDDDDD- %s", qPrintable(message.left(strindex)), qPrintable(message.mid(strindex)));
#endif
msg1.msgid = message.left(strindex);
bool leave = formatMessage(msg1);
msg2.msgid = message.mid(strindex);
msg2.lines.first().offset += strindex;
leave = leave & formatMessage(msg2);
if (msg1.lines.first().end_line > msg2.lines.first().start_line ||
(msg1.lines.first().end_line == msg2.lines.first().start_line &&
msg1.lines.first().end_col > msg2.lines.first().start_col))
{
msg2.lines.first().start_line = msg1.lines.first().end_line;
msg2.lines.first().start_col = msg1.lines.first().end_col - 1;
}
#ifdef POXML_DEBUG
qDebug("splited %d-%d(%s) and %d-%d(%s)", msg1.lines.first().end_line,msg1.lines.first().end_col,
qPrintable(msg1.msgid),
msg2.lines.first().start_line,msg2.lines.first().start_col, qPrintable(msg2.msgid));
#endif
if (leave) {
result.append(msg1);
result.append(msg2);
return result;
}
result = splitMessage(msg1);
result += splitMessage(msg2);
return result;
}
}
if (!message.isEmpty() && message.at(message.length() - 1 ) == QLatin1Char('>'))
{
int endindex = message.length() - 1;
while (endindex >= 0 && (message.at(endindex) != QLatin1Char('<') || message.at(endindex + 1) != QLatin1Char('/')))
endindex--;
QString tag = message.mid(endindex + 2, message.length() - endindex - 3);
const int indexOfSpace = tag.indexOf(QLatin1Char(' '));
if (indexOfSpace > 0 ) {
tag = tag.left(indexOfSpace);
}
#ifdef POXML_DEBUG
qDebug("behind tag %s", qPrintable(tag));
#endif
if (isCuttingTag(tag))
{
// if the message ends with a cutting tag, this tag has to
// start in between. We split both messages and format them
int strindex = endindex;
int inside = 1;
while (true) {
#ifdef POXML_DEBUG
qDebug("inside %s %d", qPrintable(message.mid(strindex, 35)), inside);
#endif
int closing_index = message.lastIndexOf(QRegularExpression(QString::fromLatin1("</%1[\\s>]").arg(tag)),
strindex - 1);
int starting_index = message.lastIndexOf(QRegularExpression(QString::fromLatin1("<%1[\\s>]").arg(tag)),
strindex - 1);
#ifdef POXML_DEBUG
qDebug("index1 %d %d %d", closing_index, starting_index, strindex);
#endif
if (starting_index == -1) {
assert(inside == 1);
break;
}
if (closing_index > starting_index)
{
strindex = closing_index;
inside++;
} else {
strindex = starting_index;
inside--;
}
if (!inside)
break;
}
#ifdef POXML_DEBUG
qDebug("split2 into \"%s\" -AAAAAANNNNNNNNNDDDDDDDDDDD- \"%s\"", qPrintable(message.left(strindex)), qPrintable(message.mid(strindex)));
#endif
msg1.msgid = message.left(strindex);
formatMessage(msg1);
msg2.msgid = message.mid(strindex);
msg2.lines.first().offset += strindex;
formatMessage(msg2);
if (msg1.lines.first().end_line > msg2.lines.first().start_line ||
(msg1.lines.first().end_line == msg2.lines.first().start_line &&
msg1.lines.first().end_col > msg2.lines.first().start_col))
{
msg1.lines.first().end_line = msg2.lines.first().start_line;
msg1.lines.first().end_col = msg2.lines.first().start_col - 1;
}
#ifdef POXML_DEBUG
qDebug("splited %d-%d(%s) and %d-%d(%s)", msg1.lines.first().end_line,msg1.lines.first().end_col,
qPrintable(msg1.msgid),
msg2.lines.first().start_line,msg2.lines.first().start_col, qPrintable(msg2.msgid));
#endif
result = splitMessage(msg1);
result += splitMessage(msg2);
return result;
}
}
error:
result.append(mb);
return result;
}
void StructureParser::endElement( int lineNumber, int columnNumber, QStringView qName)
{
const QString tname = qName.toString().toLower();
// qDebug("endElement %s - %s %d", qPrintable(tname), qPrintable(message), inside);
if (inside) {
if (!isSingleTag(qName)) {
message += QString::fromLatin1("</%1 poxml_line=\"%2\" poxml_col=\"%3\">").arg(tname).arg(lineNumber).arg(columnNumber);
}
}
if (isCuttingTag(tname)) {
inside--;
if (!inside) {
MsgBlock m;
descape(message);
m.msgid = message;
BlockInfo bi;
bi.start_line = startline;
bi.start_col = startcol;
bi.end_line = lineNumber;
bi.end_col = columnNumber + 1;
if (m.lines.isEmpty()) bi.offset = 0;
else bi.offset = m.lines.first().offset;
m.lines.append(bi);
formatMessage(m);
MsgList messages = splitMessage(m);
for (MsgList::Iterator it = messages.begin();
it != messages.end(); ++it)
{
#ifdef POXML_DEBUG
qDebug("parser '%s' %d '%s' %d:%d", qPrintable((*it).msgid), (*it).lines.first().offset, qPrintable(message.mid((*it).lines.first().offset, 15)), (*it).lines.first().start_line, (*it).lines.first().start_col);
#endif
// if the remaining text still starts with a tag, the poxml_ info
// is most probably more correct
if (!(*it).msgid.isEmpty() && (*it).msgid.at(0) == QLatin1Char('<') && isClosure((*it).msgid)) {
if (const auto match = infos_reg.match((*it).msgid); match.hasMatch()) {
(*it).lines.first().start_line = match.capturedView(1).toInt();
(*it).lines.first().start_col = match.capturedView(2).toInt();;
(*it).lines.first().offset = 0;
}
}
(*it).msgid.remove(infos_reg);
if (!(*it).msgid.isEmpty())
list.append(*it);
}
}
}
}
void StructureParser::comment ( QStringView c )
{
if (c.left(7) != QLatin1String(" TRANS:"))
return;
assert(false);
}
QString StructureParser::escapeLiterals( const QString &_contents) {
QString contents = _contents;
contents.replace(QChar::fromLatin1('\n'), QString::fromLatin1("&POXML_LINEFEED;"));
contents.replace(QChar::fromLatin1('<'), QString::fromLatin1("&POXML_LT;"));
contents.replace(QChar::fromLatin1('>'), QString::fromLatin1("&POXML_GT;"));
contents.replace(QChar::fromLatin1('\t'), QString::fromLatin1(" "));
contents.replace(QChar::fromLatin1(' '), QString::fromLatin1("&POXML_SPACE;"));
return contents;
}
QString StructureParser::descapeLiterals( const QString &_contents) {
QString contents = _contents;
contents.replace(QLatin1String("&POXML_LINEFEED;"), QLatin1String("\n"));
contents.replace(QLatin1String("&POXML_LT;"), QLatin1String("<"));
contents.replace(QLatin1String("&POXML_GT;"), QLatin1String(">"));
contents.replace(QLatin1String("&POXML_SPACE;"), QLatin1String(" "));
contents.replace(QLatin1String("!POXML_AMP!"), QLatin1String("&"));
return contents;
}
void StructureParser::stripWhiteSpace( QString &contents)
{
contents = contents.trimmed();
bool changed;
do {
changed = false;
if (contents.startsWith(QLatin1String("&POXML_LINEFEED;"))) {
contents = contents.mid(strlen("&POXML_LINEFEED;"));
changed = true;
}
if (contents.startsWith(QLatin1String("&POXML_SPACE;"))) {
contents = contents.mid(strlen("&POXML_SPACE;"));
changed = true;
}
if (contents.endsWith(QLatin1String("&POXML_LINEFEED;"))) {
contents.chop(strlen("&POXML_LINEFEED;"));
changed = true;
}
if (contents.endsWith(QLatin1String("&POXML_SPACE;"))) {
contents.chop(strlen("&POXML_SPACE;"));
changed = true;
}
} while (changed);
}
void StructureParser::cleanupTags( QString &contents )
{
contents.replace(QChar::fromLatin1('&'), QString::fromLatin1("!POXML_AMP!"));
for (int index = 0; literaltags[index]; index++) {
const QRegularExpression start(QString::fromLatin1("<%1[\\s>]").arg(QString::fromLatin1(literaltags[index])));
const QRegularExpression end(QString::fromLatin1("</%1[\\s>]").arg(QString::fromLatin1(literaltags[index])));
int strindex = 0;
while (true) {
strindex = contents.indexOf(start, strindex);
if (strindex < 0)
break;
strindex = contents.indexOf(QLatin1Char('>'), strindex);
strindex++; // one more
int endindex = contents.indexOf(end, strindex);
QString part = contents.mid(strindex, endindex - strindex);
QString newpart = escapeLiterals(part);
contents.replace(strindex, part.length(), newpart);
// this assumes that literal tags to not overlap
strindex = strindex + newpart.length();
}
}
const QRegularExpression unclosed(QStringLiteral("</(\\w*)\\s\\s*>"));
int index = 0;
while (true) {
const auto match = unclosed.match(contents, index );
if (!match.hasMatch())
break;
index = match.capturedStart();
QString tag = match.captured(1);
contents.replace(index, match.capturedLength(), QString::fromLatin1("</%1>").arg(tag));
}
const QRegularExpression start(QStringLiteral("<((\\s*[^<>\\s])*)\\s\\s*(/*)>"), QRegularExpression::InvertedGreedinessOption);
index = -1;
while (true) {
const auto match = start.match(contents, index + 1);
if (!match.hasMatch())
break;
index = match.capturedStart();
QString tag = match.captured(1);
QString cut = match.capturedTexts().last();
// qDebug("UNCLO %s %d -%s- -%s-", qPrintable(start.cap(0)), index, qPrintable(tag), qPrintable(cut));
contents.replace(index, match.capturedLength(), QString::fromLatin1("<%1%2>").arg(tag, cut));
}
const QRegularExpression singletag(QStringLiteral("<(\\w*)\\s([^><]*)/>"));
index = -1;
while (true) {
const auto match = singletag.match(contents, index + 1);
if (!match.hasMatch())
break;
index = match.capturedStart();
const QString tag = match.captured(1);
if (!StructureParser::isSingleTag(tag)) {
contents.replace(index, match.capturedLength(), QString::fromLatin1("<%1 %2></%3>").arg(tag, match.captured(2), tag));
}
}
const QRegularExpression trans_comment(QStringLiteral("<!-- TRANS:([^<>]*)-->"));
index = -1;
while (true) {
const auto match = trans_comment.match(contents, index + 1);
if (!match.hasMatch())
break;
index = match.capturedStart();
QString msgid = match.captured(1);
contents.replace(index, match.capturedLength(), QString::fromLatin1("<trans_comment>%1</trans_comment>").arg(msgid));
}
#ifdef POXML_DEBUG
qDebug("final %s", qPrintable(contents));
#endif
}
static bool removeEmptyTag( QString &contents, const QString & tag)
{
// qDebug("cont %s %s", qPrintable(contents), qPrintable(tag));
const QRegularExpression empty(QString::fromLatin1("<%1[^>]*>[\\s\n]+</%2\\s*>").arg(tag, tag));
int strindex = 0;
while (true) {
const auto match = empty.match(contents, strindex);
if (!match.hasMatch())
break;
strindex = match.capturedStart();
qDebug("found empty tag %s", qPrintable(tag));
contents.replace(strindex, match.capturedLength(), QLatin1Char(' '));
strindex++;
return true;
}
return false;
}
void StructureParser::removeEmptyTags( QString &contents )
{
bool removed;
do {
removed = false;
for (int index = 0; cuttingtags[index]; index++) {
if (removeEmptyTag(contents, QLatin1String(cuttingtags[index]))) {
removed = true;
break;
}
}
// as glossterm has two different semantics, it's likely
// to break something when it's cuttingtag
if (removeEmptyTag(contents, QLatin1String("glossterm")))
removed = true;
} while (removed);
}
void StructureParser::characters(QStringView ch)
{
if (inside && !ch.isEmpty())
message += ch;
}
static MsgList parseContents(const QString &contents)
{
QXmlStreamReader xmlReader(contents);
StructureParser handler;
bool foundDtd = false;
while (!xmlReader.atEnd()) {
const QXmlStreamReader::TokenType token = xmlReader.readNext();
switch (token) {
case QXmlStreamReader::StartDocument:
handler.startDocument();
break;
case QXmlStreamReader::EndDocument:
// Nothing
break;
case QXmlStreamReader::Comment:
handler.comment(xmlReader.text());
break;
case QXmlStreamReader::DTD:
foundDtd = true;
break;
case QXmlStreamReader::StartElement:
handler.startElement(xmlReader.lineNumber(), xmlReader.columnNumber(), xmlReader.qualifiedName(), xmlReader.attributes());
break;
case QXmlStreamReader::EndElement:
handler.endElement(xmlReader.lineNumber(), xmlReader.columnNumber(), xmlReader.qualifiedName());
break;
case QXmlStreamReader::Characters:
handler.characters(xmlReader.text());
break;
case QXmlStreamReader::EntityReference:
handler.skippedEntity(xmlReader.name());
break;
case QXmlStreamReader::Invalid:
// QXmlStreamReader is annoying and won't accept custom entities like &POXML_LINEFEED;
// unless the file has a DTD, so if we fail parsing, inject a DTD into the XML contents and parse again
if (!foundDtd) {
const QRegularExpression xmlDeclarationRegExp(QStringLiteral("^.*<\\?xml.*?\\?>"));
const QRegularExpressionMatch match = xmlDeclarationRegExp.match(contents);
const QString fakeDTD = QStringLiteral("<!DOCTYPE fake PUBLIC \"fake\" \"fake\" []>");
if (match.hasMatch()) {
const QString xmlDeclaration = match.captured(0);
return parseContents(xmlDeclaration + fakeDTD + contents.mid(xmlDeclaration.indexOf(xmlDeclaration) + xmlDeclaration.length()));
} else {
return parseContents(fakeDTD + contents);
}
}
qWarning() << "Invalid token found" << xmlReader.errorString() << xmlReader.lineNumber() << xmlReader.columnNumber() << contents;
break;
case QXmlStreamReader::ProcessingInstruction:
// Nothing
break;
default:
qWarning() << "unexpected token" << token;
}
}
return handler.getList();
}
MsgList parseXML(const char *filename)
{
QFile xmlFile(QFile::decodeName(filename));
xmlFile.open(QIODevice::ReadOnly);
QByteArray ccontents = xmlFile.readAll();
xmlFile.close();
QString contents = QString::fromUtf8( ccontents );
StructureParser::cleanupTags(contents);
MsgList english;
{
// find internal entities that start with "i18n-", and extract
// their replacement texts:
const QRegularExpression rx( QStringLiteral("<!ENTITY\\s+([^\\s]+)\\s+([\"'])") );
for ( int index = 0 ;; ) {
const auto match = rx.match(contents, index);
if (!match.hasMatch()) {
break;
}
index = match.capturedStart();
const QString name = match.captured( 1 );
const QChar delim = match.captured( 2 ).at( 0 );
const int start = index;
index = contents.indexOf( delim, index + match.capturedLength() );
index = contents.indexOf( QLatin1Char('>'), index );
if ( !name.startsWith( QLatin1String("i18n-") ) )
continue;
const QString entity = contents.mid( start, index - start + 1 );
MsgBlock block;
block.tag = QStringLiteral("!ENTITY");
BlockInfo bi;
bi.start_line = countRev( contents, QLatin1Char('\n'), index ) + 1;
bi.start_col = start - contents.lastIndexOf( QLatin1Char('\n'), start ) - 1;
bi.end_line = bi.start_line + entity.count( QLatin1Char('\n') );
bi.end_col = index - contents.lastIndexOf( QLatin1Char('\n'), index ) + 1;
#ifdef POXML_DEBUG
qDebug( "ENTITY %s @ i:%d l:%d c:%d->l:%d c:%d", qPrintable( name ),
index, bi.start_line, bi.start_col, bi.end_line, bi.end_col );
#endif
block.lines.push_back( bi );
block.msgid = entity;
english.push_back( block );
}
}
// Remove all entity definitions now:
while (true) {
int index = contents.indexOf(QStringLiteral("<!ENTITY"));
if (index < 0)
break;
int inside = 0;
int endindex = index + 1;
QString replacement;
while (contents.at(endindex) != QLatin1Char('>') || inside)
{
switch (contents.at(endindex).toLatin1()) {
case '<':
inside++; break;
case '>':
inside--; break;
case '\n':
replacement += QLatin1Char('\n');
break;
default:
break;
}
endindex++;
}
endindex++;
contents.replace(index, endindex - index, replacement);
}
english += parseContents(contents);
bool changed = false;
do {
changed = false;
QMap<QString, QString> msgids;
for (MsgList::Iterator it = english.begin();
it != english.end(); it++)
{
QMap<QString,QString>::Iterator found = msgids.find((*it).msgid);
if ((*it).msgid.length() < 4) {
(*it).msgid = QString::fromLatin1("<%1>%2</%3>").arg((*it).tag, (*it).msgid, (*it).tag);
changed = true;
break;
}
if (found != msgids.end()) {
if (found.value() != (*it).tag) {
#ifdef POXML_DEBUG
qDebug("same msgid for '%s' and '%s'", qPrintable(found.value()), qPrintable((*it).tag));
#endif
changed = true;
QString msgid = (*it).msgid;
for (MsgList::Iterator it2 = english.begin();
it2 != english.end(); it2++)
{
if ((*it2).msgid == msgid)
(*it2).msgid = QString::fromLatin1("<%1%2>%3</%4>").arg((*it2).tag, (*it2).attrs, msgid, (*it2).tag);
}
break;
}
} else {
msgids.insert((*it).msgid, (*it).tag);
}
}
} while (changed);
// Remove any single word command block since
// it does not make sense to translate a command line command