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DocBook: add a parameter to change the namespace prefix for MathML.

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This commit is contained in:
Thibaut Cuvelier 2021-03-23 00:08:50 +01:00
parent 02a3705496
commit 0f782b0ded
2 changed files with 34 additions and 10 deletions
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9
src/BufferParams.h
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@ -584,6 +584,15 @@ public:
/// what format to use for table output in DocBook. present choices are above
TableOutput docbook_table_output;
// do not change these values. we rely upon them.
enum MathMLNameSpacePrefix {
NoPrefix = 0,
MPrefix = 1,
MMLPrefix = 2
};
/// what prefix to use when outputting MathML. present choices are above
MathMLNameSpacePrefix docbook_mathml_prefix;
/// allow the LaTeX backend to run external programs
bool shell_escape;
/// generate output usable for reverse/forward search

35
src/mathed/InsetMathHull.cpp
View File

@ -11,7 +11,6 @@
#include <config.h>
#include "InsetMathHull.h"
#include "InsetMathChar.h"
#include "InsetMathColor.h"
#include "InsetMathFrac.h"
@ -2368,8 +2367,7 @@ int InsetMathHull::plaintext(odocstringstream & os,
}
void InsetMathHull::docbook(XMLStream & xs, OutputParams const & runparams) const
{
void InsetMathHull::docbook(XMLStream & xs, OutputParams const & runparams) const {
// Choose the tag around the MathML equation.
docstring name;
bool doCR = false;
@ -2384,9 +2382,17 @@ void InsetMathHull::docbook(XMLStream & xs, OutputParams const & runparams) cons
// TODO: recognise \tag from amsmath? This would allow having <equation> with a proper title.
docstring attr;
bool mathmlNamespaceInline = buffer().params().docbook_mathml_prefix == BufferParams::NoPrefix;
if (mathmlNamespaceInline)
attr += "xmlns=\"http://www.w3.org/1998/Math/MathML\"";
for (row_type i = 0; i < nrows(); ++i) {
if (!label(i).empty()) {
attr = "xml:id=\"" + xml::cleanID(label(i)) + "\"";
if (!attr.empty())
attr += " ";
attr += "xml:id=\"" + xml::cleanID(label(i)) + "\"";
break;
}
}
@ -2398,20 +2404,28 @@ void InsetMathHull::docbook(XMLStream & xs, OutputParams const & runparams) cons
xs << xml::StartTag(name, attr);
xs << xml::CR();
// With DocBook 5, MathML must be within its own namespace; defined in Buffer.cpp::writeDocBookSource as "m".
// With DocBook 5, MathML must be within its own namespace (defined in Buffer.cpp::writeDocBookSource, except when
// it should be inlined).
// Output everything in a separate stream so that this does not interfere with the standard flow of DocBook tags.
std::string mathmlNamespacePrefix;
if (!mathmlNamespaceInline) {
if (buffer().params().docbook_mathml_prefix == BufferParams::MPrefix)
mathmlNamespacePrefix = "m";
else if (buffer().params().docbook_mathml_prefix == BufferParams::MMLPrefix)
mathmlNamespacePrefix = "mml";
}
odocstringstream osmath;
MathMLStream ms(osmath, "m", true);
MathMLStream ms(osmath, mathmlNamespacePrefix, true);
// Output the MathML subtree.
odocstringstream ls;
otexstream ols(ls);
// TeX transcription. Avoid MTag/ETag so that there are no extraneous spaces.
ms << "<" << from_ascii("alt") << " role='tex'" << ">";
// Workaround for db2latex: db2latex always includes equations with
// \ensuremath{} or \begin{display}\end{display}
// so we strip LyX' math environment
odocstringstream ls;
otexstream ols(ls);
TeXMathStream wi(ols, false, false, TeXMathStream::wsDefault, runparams.encoding);
InsetMathGrid::write(wi);
ms << from_utf8(subst(subst(to_utf8(ls.str()), "&", "&amp;"), "<", "&lt;"));
@ -2434,7 +2448,8 @@ void InsetMathHull::docbook(XMLStream & xs, OutputParams const & runparams) cons
ms << ETag("math");
} catch (MathExportException const &) {
ms.cr();
osmath << "<mathphrase>MathML export failed. Please report this as a bug.</mathphrase>";
osmath << "<mathphrase>MathML export failed. Please report this as a bug to the LyX developers: "
"https://www.lyx.org/trac.</mathphrase>";
}
// Output the complete formula to the DocBook stream.