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DocBook: avoid generating empty paragraphs instead of new pages.

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As this required to first generate the paragraph before outputting it if necessary, tests like XMLStream::isTagOpen no more worked properly. This also refactors table handling to get rid of that case (and make code easier to read).
This commit is contained in:
Thibaut Cuvelier 2020-08-02 04:03:17 +02:00
parent 8d115413c1
commit 875f7d42e2
6 changed files with 133 additions and 104 deletions
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5
autotests/export/docbook/bibliography_precooked_aastex.xml
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@ -967,11 +967,8 @@ v(p,\lambda)_{\pm} & = & \pm\lambda(E\mp\lambda|{\textbf{p}}|)^{1/2}\chi
<bibliomixed xml:id='pet76'>Peterson, C. J. 1976, <!-- \aj -->, 81, 617 </bibliomixed>
<bibliomixed xml:id='spi85'>Spitzer, L. 1985, Dynamics of Star Clusters, J. Goodman and P. Hut, Dordrecht: Reidel, 109 </bibliomixed>
</bibliography>
<para>
</para>
<table xml:id="tbl-2">
<caption>Terribly relevant tabular information.</caption>
<tbody>
<tr>
<td align='center' valign='top'>Star </td>
@ -1209,8 +1206,6 @@ v(p,\lambda)_{\pm} &amp; = &amp; \pm\lambda(E\mp\lambda|{\textbf{p}}|)^{1/2}\chi
<TableComments>We can also attach a long-ish paragraph of explanatory material to a table. Use \tablerefs to append a list of references. The following references were from a different table: I've patched them in here to show how they look, but don't take them too seriously—I certainly have not.</TableComments>
<TableRefs>(1) Barbuy, Spite, &amp; Spite 1985; (2) Bond 1980; (3) Carbon et al. 1987; (4) Hobbs &amp; Duncan 1987; (5) Gilroy et al. 1988: (6) Gratton &amp; Ortolani 1986; (7) Gratton &amp; Sneden 1987; (8) Gratton &amp; Sneden (1988); (9) Gratton &amp; Sneden 1991; (10) Kraft et al. 1982; (11) LCL, or Laird, 1990; (12) Leep &amp; Wallerstein 1981; (13) Luck &amp; Bond 1981; (14) Luck &amp; Bond 1985; (15) Magain 1987; (16) Magain 1989; (17) Peterson 1981; (18) Peterson, Kurucz, &amp; Carney 1990; (19) RMB; (20) Schuster &amp; Nissen 1988; (21) Schuster &amp; Nissen 1989b; (22) Spite et al. 1984; (23) Spite &amp; Spite 1986; (24) Hobbs &amp; Thorburn 1991; (25) Hobbs et al. 1991; (26) Olsen 1983.</TableRefs>
</table>
</section>
</article>

2
src/OutputParams.cpp
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@ -35,7 +35,7 @@ OutputParams::OutputParams(Encoding const * enc)
html_disable_captions(false), html_in_par(false),
html_make_pars(true), docbook_in_par(false), docbook_make_pars(true),
docbook_force_pars(false), docbook_anchors_to_ignore(std::set<docstring>()), docbook_in_float(false),
docbook_in_listing(false), for_toc(false), for_tooltip(false),
docbook_in_listing(false), docbook_in_table(false), for_toc(false), for_tooltip(false),
for_search(false), for_preview(false), includeall(false)
{
// Note: in PreviewLoader::Impl::dumpPreamble

3
src/OutputParams.h
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@ -369,6 +369,9 @@ public:
/// Is the current context a listing?
bool docbook_in_listing;
/// Is the current context a table?
bool docbook_in_table;
/// Are we generating this material for inclusion in a TOC-like entity?
bool for_toc;

197
src/insets/InsetFloat.cpp
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@ -563,6 +563,109 @@ const InsetCaption* findCaptionInParagraph(const Paragraph &par)
}
void docbookSubfigures(XMLStream & xs, OutputParams const & runparams, const InsetCaption * caption,
const InsetLabel * label, std::vector<const InsetBox *> & subfigures)
{
// Ensure there is no label output, it is supposed to be handled as xml:id.
OutputParams rpNoLabel = runparams;
if (label)
rpNoLabel.docbook_anchors_to_ignore.emplace(label->screenLabel());
// First, open the formal group.
docstring attr = docstring();
if (label)
attr += "xml:id=\"" + xml::cleanID(label->screenLabel()) + "\"";
xs.startDivision(false);
xs << xml::StartTag("formalgroup", attr);
xs << xml::CR();
xs << xml::StartTag("title", attr);
if (caption) {
caption->getCaptionAsDocBook(xs, rpNoLabel);
} else {
xs << "No caption";
// No caption has been detected, but this tag is required for the document to be valid DocBook.
}
xs << xml::EndTag("title");
xs << xml::CR();
// Deal with each subfigure individually. This should also deal with their caption and their label.
// This should be a recursive call to InsetFloat.
for (const InsetBox *subfigure: subfigures) {
// If there is no InsetFloat in the paragraphs, output a warning.
bool foundInsetFloat = false;
for (const auto & it : subfigure->paragraphs()) {
for (pos_type posIn = 0; posIn < it.size(); ++posIn) {
const Inset *inset = it.getInset(posIn);
if (inset && dynamic_cast<const InsetFloat*>(inset)) {
foundInsetFloat = true;
break;
}
}
if (foundInsetFloat)
break;
}
if (!foundInsetFloat)
xs << XMLStream::ESCAPE_NONE << "Error: no float found in the box. "
"To use subfigures in DocBook, elements must be wrapped in a float "
"inset and have a title/caption.";
// TODO: could also output a table, that would ensure that the document is correct and *displays* correctly (but without the right semantics), instead of just an error.
// Finally, recurse.
subfigure->docbook(xs, runparams);
}
// Every subfigure is done: close the formal group.
xs << xml::EndTag("formalgroup");
xs << xml::CR();
xs.endDivision();
}
void docbookNoSubfigures(XMLStream & xs, OutputParams const & runparams, const InsetCaption * caption,
const InsetLabel * label, Floating const & ftype, const InsetFloat * thisFloat)
{
string const &titleTag = ftype.docbookCaption();
// Ensure there is no label output, it is supposed to be handled as xml:id.
OutputParams rpNoLabel = runparams;
if (label)
rpNoLabel.docbook_anchors_to_ignore.emplace(label->screenLabel());
// Ensure the float does not output its caption, as it is handled here (DocBook mandates a specific place for
// captions, they cannot appear at the end of the float, albeit LyX is happy with that).
OutputParams rpNoTitle = runparams;
rpNoTitle.docbook_in_float = true;
if (ftype.floattype() == "table")
rpNoTitle.docbook_in_table = true;
// Organisation: <float> <title if any/> <contents without title/> </float>.
docstring attr = docstring();
if (label)
attr += "xml:id=\"" + xml::cleanID(label->screenLabel()) + "\"";
if (!ftype.docbookAttr().empty()) {
if (!attr.empty())
attr += " ";
attr += from_utf8(ftype.docbookAttr());
}
xs << xml::StartTag(ftype.docbookTag(caption != nullptr), attr);
xs << xml::CR();
if (caption != nullptr) {
xs << xml::StartTag(titleTag);
caption->getCaptionAsDocBook(xs, rpNoLabel);
xs << xml::EndTag(titleTag);
xs << xml::CR();
}
thisFloat->InsetText::docbook(xs, rpNoTitle);
xs << xml::EndTag(ftype.docbookTag(caption != nullptr));
xs << xml::CR();
}
void InsetFloat::docbook(XMLStream & xs, OutputParams const & runparams) const
{
// Determine whether the float has a title or not. For this, iterate through the paragraphs and look
@ -589,96 +692,12 @@ void InsetFloat::docbook(XMLStream & xs, OutputParams const & runparams) const
// Gather a few things from global environment that are shared between all following cases.
FloatList const &floats = buffer().params().documentClass().floats();
Floating const &ftype = floats.getType(params_.type);
string const &titleTag = ftype.docbookCaption();
// Ensure there is no label output, it is supposed to be handled as xml:id.
OutputParams rpNoLabel = runparams;
if (label)
rpNoLabel.docbook_anchors_to_ignore.emplace(label->screenLabel());
// Ensure the float does not output its caption, as it is handled here (DocBook mandates a specific place for
// captions, they cannot appear at the end of the float, albeit LyX is happy with that).
OutputParams rpNoTitle = runparams;
rpNoTitle.docbook_in_float = true;
// Deal with subfigures.
if (!subfigures.empty()) {
// First, open the formal group.
docstring attr = docstring();
if (label)
attr += "xml:id=\"" + xml::cleanID(label->screenLabel()) + "\"";
xs.startDivision(false);
xs << xml::StartTag("formalgroup", attr);
xs << xml::CR();
xs << xml::StartTag("title", attr);
if (caption) {
caption->getCaptionAsDocBook(xs, rpNoLabel);
} else {
xs << "No caption";
// No caption has been detected, but this tag is required for the document to be valid DocBook.
}
xs << xml::EndTag("title");
xs << xml::CR();
// Deal with each subfigure individually. This should also deal with their caption and their label.
// This should be a recursive call to InsetFloat.
for (const InsetBox *subfigure: subfigures) {
// If there is no InsetFloat in the paragraphs, output a warning.
bool foundInsetFloat = false;
for (auto it = subfigure->paragraphs().begin(); it != subfigure->paragraphs().end(); ++it) {
for (pos_type posIn = 0; posIn < it->size(); ++posIn) {
const Inset *inset = it->getInset(posIn);
if (inset && dynamic_cast<const InsetFloat*>(inset)) {
foundInsetFloat = true;
break;
}
}
if (foundInsetFloat)
break;
}
if (!foundInsetFloat)
xs << XMLStream::ESCAPE_NONE << "Error: no float found in the box. "
"To use subfigures in DocBook, elements must be wrapped in a float "
"inset and have a title/caption.";
// TODO: could also output a table, that would ensure that the document is correct and *displays* correctly (but without the right semantics), instead of just an error.
// Finally, recurse.
subfigure->docbook(xs, runparams);
}
// Every subfigure is done: close the formal group.
xs << xml::EndTag("formalgroup");
xs << xml::CR();
xs.endDivision();
}
// Here, ensured not to have subfigures.
// Organisation: <float> <title if any/> <contents without title/> </float>
docstring attr = docstring();
if (label)
attr += "xml:id=\"" + xml::cleanID(label->screenLabel()) + "\"";
if (!ftype.docbookAttr().empty()) {
if (!attr.empty())
attr += " ";
attr += from_utf8(ftype.docbookAttr());
}
xs << xml::StartTag(ftype.docbookTag(caption != nullptr), attr);
xs << xml::CR();
if (caption != nullptr) {
xs << xml::StartTag(titleTag);
caption->getCaptionAsDocBook(xs, rpNoLabel);
xs << xml::EndTag(titleTag);
xs << xml::CR();
}
InsetText::docbook(xs, rpNoTitle);
xs << xml::EndTag(ftype.docbookTag(caption != nullptr));
xs << xml::CR();
// Switch on subfigures.
if (!subfigures.empty())
docbookSubfigures(xs, runparams, caption, label, subfigures);
else
docbookNoSubfigures(xs, runparams, caption, label, ftype, this);
}

6
src/insets/InsetTabular.cpp
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@ -3658,8 +3658,8 @@ void Tabular::docbook(XMLStream & xs, OutputParams const & runparams) const
docstring ret;
// Some tables are inline. Likely limitation: cannot output a table within a table; is that really a limitation?
bool hasTableStarted = xs.isTagOpen(xml::StartTag("informaltable")) || xs.isTagOpen(xml::StartTag("table"));
if (!hasTableStarted) {
if (!runparams.docbook_in_table) { // Check on the *outer* set of parameters, so that the table can be closed
// properly at the end of this function.
xs << xml::StartTag("informaltable");
xs << xml::CR();
}
@ -3742,7 +3742,7 @@ void Tabular::docbook(XMLStream & xs, OutputParams const & runparams) const
xs << xml::CR();
// If this method started the table tag, also make it close it.
if (!hasTableStarted) {
if (!runparams.docbook_in_table) {
xs << xml::EndTag("informaltable");
xs << xml::CR();
}

24
src/output_docbook.cpp
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@ -463,14 +463,26 @@ ParagraphList::const_iterator makeParagraphs(
((open_par && (!runparams.docbook_in_par || nextpar != pend))
|| (!open_par && runparams.docbook_in_par && par == pbegin && nextpar != pend));
if (open_par)
openParTag(xs, lay);
// Determine if this paragraph has some real content. Things like new pages are not caught
// by Paragraph::empty(), even though they do not generate anything useful in DocBook.
odocstringstream os2;
XMLStream xs2(os2);
par->simpleDocBookOnePar(buf, xs2, runparams, text.outerFont(distance(begin, par)), open_par, close_par, 0);
par->simpleDocBookOnePar(buf, xs, runparams, text.outerFont(distance(begin, par)), open_par, close_par, 0);
docstring cleaned = os2.str();
static const lyx::regex reg("[ \\r\\n]*");
cleaned = from_utf8(lyx::regex_replace(to_utf8(cleaned), reg, string("")));
if (close_par) {
closeTag(xs, lay);
xs << xml::CR();
if (!cleaned.empty()) {
if (open_par)
openParTag(xs, lay);
xs << XMLStream::ESCAPE_NONE << os2.str();
if (close_par) {
closeTag(xs, lay);
xs << xml::CR();
}
}
}
return pend;