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DocBook: better condition for abstracts.

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This commit is contained in:
Thibaut Cuvelier 2020-07-31 01:20:08 +02:00
parent 6434b666bf
commit acdead0487
1 changed files with 33 additions and 20 deletions
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53
src/output_docbook.cpp
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@ -36,6 +36,8 @@
#include "support/lstrings.h"
#include "support/textutils.h"
#include "support/regex.h"
#include <stack>
#include <iostream>
#include <algorithm>
@ -849,8 +851,29 @@ void outputDocBookInfo(
pit_type epitInfo;
tie(shouldBeInInfo, mustBeInInfo, bpitInfo, epitInfo) = info;
// The abstract must go in <info>.
// Perform an additional check on the abstract. Sometimes, there are many paragraphs that should go
// into the abstract, but none generates actual content. Thus, first generate to a temporary stream,
// then only create the <abstract> tag if these paragraphs generate some content.
// This check must be performed *before* a decision on whether or not to output <info> is made.
bool hasAbstract = hasAbstractBetween(paragraphs, bpitAbstract, epitAbstract);
docstring abstract;
if (hasAbstract) {
odocstringstream os2;
XMLStream xs2(os2);
generateDocBookParagraphWithoutSectioning(text, buf, xs2, runparams, paragraphs, bpitAbstract, epitAbstract);
// Actually output the abstract if there is something to do. Don't count line feeds or spaces in this,
// even though they must be properly output if there is some abstract.
docstring abstractContent = os2.str();
static const lyx::regex reg("[ \\r\\n]*");
abstractContent = from_utf8(lyx::regex_replace(to_utf8(abstractContent), reg, string("")));
// Nothing? Then there is no abstract!
if (abstractContent.empty())
hasAbstract = false;
}
// The abstract must go in <info>.
bool needInfo = !mustBeInInfo.empty() || hasAbstract;
// Start the <info> tag if required.
@ -863,26 +886,16 @@ void outputDocBookInfo(
// Output the elements that should go in <info>.
generateDocBookParagraphWithoutSectioning(text, buf, xs, runparams, paragraphs, bpitInfo, epitInfo);
if (hasAbstract) {
// Sometimes, there are many paragraphs that should go into the abstract, but none generates actual content.
// Thus, first generate to a temporary stream, then only create the <abstract> tag if these paragraphs
// generate some content.
odocstringstream os2;
XMLStream xs2(os2);
generateDocBookParagraphWithoutSectioning(text, buf, xs2, runparams, paragraphs, bpitAbstract, epitAbstract);
if (hasAbstract && !abstract.empty()) { // The second test is probably superfluous.
string tag = paragraphs[bpitAbstract].layout().docbookforceabstracttag();
if (tag == "NONE")
tag = "abstract";
// Actually output the abstract if there is something to do.
if (!os2.str().empty()) {
string tag = paragraphs[bpitAbstract].layout().docbookforceabstracttag();
if (tag == "NONE")
tag = "abstract";
xs << xml::StartTag(tag);
xs << xml::CR();
xs << XMLStream::ESCAPE_NONE << os2.str();
xs << xml::EndTag(tag);
xs << xml::CR();
}
xs << xml::StartTag(tag);
xs << xml::CR();
xs << XMLStream::ESCAPE_NONE << abstract;
xs << xml::EndTag(tag);
xs << xml::CR();
}
// End the <info> tag if it was started.