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Fix bug #13069.
Use XML parser to handle <mtext> issues. Some of the config/qt.m4 code by JMarc.
This commit is contained in:
Richard Kimberly Heck
parent
b5260a3a0f
commit
fafe3ea5d7
14
config/qt.m4
14
config/qt.m4
@ -28,10 +28,10 @@ AC_DEFUN([QT_CHECK_COMPILE],
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qt_guilibs="'-lQtCore -lQtGui' '-lQtCore4 -lQtGui4'"
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if test $USE_QT6 = "yes" ; then
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qt_corelibs="-lQt6Core"
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qt_guilibs="-lQt6Core -lQt6Concurrent -lQt6Gui -lQt6Svg -lQt6Widgets"
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qt_guilibs="-lQt6Core -lQt6Concurrent -lQt6Gui -lQt6Svg -lQt6Xml -lQt6Widgets"
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else
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qt_corelibs="-lQt5Core"
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qt_guilibs="-lQt5Core -lQt5Concurrent -lQt5Gui -lQt5Svg -lQt5Widgets"
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qt_guilibs="-lQt5Core -lQt5Concurrent -lQt5Gui -lQt5Svg -lQt5Xml -lQt5Widgets"
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fi
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for libname in $qt_corelibs '-framework QtCore'
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do
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@ -43,8 +43,8 @@ AC_DEFUN([QT_CHECK_COMPILE],
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done
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qt_cv_libname=
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for libname in $qt_guilibs \
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'-framework QtCore -framework QtConcurrent -framework QtSvg -framework QtWidgets -framework QtMacExtras -framework QtGui'\
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'-framework QtCore -framework QtConcurrent -framework QtSvg -framework QtSvgWidgets -framework QtWidgets -framework QtGui'\
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'-framework QtCore -framework QtConcurrent -framework QtSvg -framework QtXml -framework QtWidgets -framework QtMacExtras -framework QtGui'\
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'-framework QtCore -framework QtConcurrent -framework QtSvg -framework QtSvgWidgets -framework QtXml -framework QtWidgets -framework QtGui'\
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'-framework QtCore -framework QtGui'
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do
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QT_TRY_LINK($libname)
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@ -264,7 +264,7 @@ AC_DEFUN([QT_DO_PKG_CONFIG],
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export PKG_CONFIG_PATH
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fi
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qt_corelibs="Qt5Core"
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qt_guilibs="Qt5Core Qt5Concurrent Qt5Gui Qt5Svg Qt5Widgets"
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qt_guilibs="Qt5Core Qt5Concurrent Qt5Gui Qt5Svg Qt5Widgets Qt5Xml"
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lyx_use_x11extras=false
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PKG_CHECK_EXISTS(Qt5X11Extras, [lyx_use_x11extras=true], [])
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if $lyx_use_x11extras; then
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@ -339,7 +339,7 @@ AC_DEFUN([QT_DO_MANUAL_CONFIG],
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QT_CORE_LDFLAGS=
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if test -n "$qt_cv_includes"; then
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QT_INCLUDES="-I$qt_cv_includes"
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for i in Qt QtCore QtGui QtWidgets QtSvg QtConcurrent QtSvgWidgets QtMacExtras; do
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for i in Qt QtCore QtGui QtWidgets QtSvg QtConcurrent QtSvgWidgets QtXml QtMacExtras; do
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QT_INCLUDES="$QT_INCLUDES -I$qt_cv_includes/$i"
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if test "$lyx_use_packaging" = "macosx" ; then
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QT_INCLUDES="$QT_INCLUDES -I$qt_cv_libraries/${i}.framework/Headers"
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@ -435,6 +435,8 @@ qtHaveModule(concurrent) {QT += concurrent} else {MISSING += concurrent}
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qtHaveModule(gui) {QT += gui} else {MISSING += gui}
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qtHaveModule(gui-private) {QT += gui-private} else {MISSING += gui-private}
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qtHaveModule(svg) {QT += svg} else {MISSING += svg}
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qtHaveModule(svgwidgets) {QT += svgwidgets} else {MISSING += svgwidgets}
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qtHaveModule(xml) {QT += xml} else {MISSING += xml}
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qtHaveModule(widgets) {QT += widgets} else {MISSING += widgets}
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EOF2
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if test "$qt_major" = 6; then
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@ -28,6 +28,10 @@
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#include <iostream>
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#include <ostream>
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#include <QtXml/QDomDocument>
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#include <QtXml/QDomElement>
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#include "support/qstring_helpers.h"
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using namespace lyx::support;
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namespace lyx {
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@ -62,6 +66,10 @@ namespace {
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void splitAndWrapInMText(MathMLStream & ms, MathData const & cell,
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const std::string & attributes)
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{
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// The goal of this function is to take an XML fragment and wrap
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// anything that is outside of any tag in <mtext></mtext> tags,
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// then wrap the whole thing in an <mrow></mrow> tag with attributes
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// First, generate the inset into a string of its own.
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docstring inset_contents;
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{
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@ -74,52 +82,45 @@ void splitAndWrapInMText(MathMLStream & ms, MathData const & cell,
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inset_contents = ostmp.str();
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}
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// No tags are allowed within <m:mtext>: split the string if there are tags.
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std::vector<docstring> parts;
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while (true) {
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std::size_t angle_pos = inset_contents.find('<');
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if (angle_pos == docstring::npos)
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break;
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// We use the QT XML library. It's easier if we deal with an XML "document"
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// rather than "fragment", so we wrap it in a fake root node (which we will
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// remove at the end).
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docstring inset_contents_xml = "<root>" + inset_contents + "</root>";
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// String structure:
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// - prefix: pure text, no tag
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// - tag to split: something like <m:mn>1</m:mn> or more complicated
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// (like nested tags), with or without name space
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// - rest to be taken care of in the next iteration
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// Parse the XML into a DOM
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QDomDocument xml;
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xml.setContent(toqstr(inset_contents_xml));
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// Push the part before the tag.
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parts.emplace_back(inset_contents.substr(0, angle_pos));
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inset_contents = inset_contents.substr(angle_pos);
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// Now, inset_contents starts with the tag to isolate, so that
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// inset_contents[0] == '<'
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QDomElement docElem = xml.documentElement();
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// Push the tag, up to its end. Process: find the tag name (either
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// before > or the first attribute of the tag), then the matching end
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// tag, then proceed with pushing.
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const std::size_t tag_name_end =
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std::min(inset_contents.find(' ', 1), inset_contents.find('>', 1));
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const std::size_t tag_name_length = tag_name_end - 1;
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const docstring tag_name = inset_contents.substr(1, tag_name_length);
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const std::size_t end_tag_start =
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inset_contents.find(tag_name, tag_name_end + 1);
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const std::size_t end_tag = inset_contents.find('>', end_tag_start);
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parts.emplace_back(inset_contents.substr(0, end_tag + 1));
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inset_contents = inset_contents.substr(end_tag + 1);
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// Iterate through the children of our fake root element.
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QDomNode n = docElem.firstChild();
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while (!n.isNull()) {
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// try to convert the child into a text element
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// (i.e. some text that is outside of an XML tag)
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QDomText text = n.toText();
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if (!text.isNull()) {
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// if the result is not null, then the child was indeed
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// bare text, so we need to wrap it in mtext tags
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// make an mtext element
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QDomElement wrapper = xml.createElement(toqstr(ms.namespacedTag("mtext")));
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// put the mtext element in the document right before the text
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docElem.insertBefore(wrapper,n);
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// move the text node inside the mtext element (this has the side
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// effect of removing it from where it was as a child of the root)
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wrapper.appendChild(n);
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n = wrapper.nextSibling();
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} else {
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// if the text is null, then we have something besides a text
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// element (i.e. a tag), so we don't need to do anything and just
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// move onto the next child
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n = n.nextSibling();
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}
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}
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parts.emplace_back(inset_contents);
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// Finally, output the complete inset: escape the test in <m:mtext>, leave
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// the other tags untouched.
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ms << MTag("mrow", attributes);
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for (std::size_t i = 0; i < parts.size(); i += 2) {
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ms << MTag("mtext")
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<< parts[i]
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<< ETag("mtext");
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if (parts.size() > i + 1)
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ms << parts[i + 1];
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}
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docstring interior = qstring_to_ucs4(xml.toString(-1));
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ms << interior.substr(6,interior.length()-13); // chop off the initial <root> and final </root> tags
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ms << ETag("mrow");
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}
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}
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