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/***************************************************************************
* Copyright (C) 2004-2015 by Pere Constans
* constans@molspaces.com
* cb2Bib version 1.9.2. Licensed under the GNU GPL version 3.
* See the LICENSE file that comes with this distribution.
***************************************************************************/
#ifndef COREBIBPARSER_H
#define COREBIBPARSER_H
#include "authorString.h"
#include "bibReference.h"
#include "cb2bib_utilities.h"
#include "settings.h"
#include <QDir>
#include <QObject>
/**
Class for bibliographic reference parsing
@author Pere Constans
*/
class coreBibParser : public QObject
{
Q_OBJECT
public:
explicit coreBibParser(QObject* parento = 0);
inline virtual ~coreBibParser() {}
QString referenceToBibTeX(const bibReference& ref) const;
QString referenceToFomattedBibTeX(const bibReference& ref) const;
bibReference wholeReference(const QString& str);
bool referenceAtKey(const QString& key, const QString& str, bibReference* ref);
bool referencesIn(const QString& str, bibReference* ref);
void initReferenceParsing(const QString& dir, const QStringList& fields, bibReference* ref);
inline const QStringList& bibliographicFields() const
{
return _bibliographic_fields;
}
inline const QStringList& sortedBibliographicFields() const
{
return _sorted_bibliographic_fields;
}
inline const QStringList& bibliographicTypes() const
{
return _bibliographic_types;
}
inline void setReferenceParsingDir(const QString& dir)
{
// Set base dir for cases of relative 'file'
// Terminate dirname with separator to avoid adding it to each reference
_bib_file_dir = QDir::toNativeSeparators(QFileInfo(dir).absolutePath() + QDir::separator());
}
inline bool hasBibTeX(const QString& str) const
{
if (_bib_begin0_re.indexIn(str) > -1)
return true;
else
return _bib_begin1_re.indexIn(str) > -1;
}
inline int fieldCount(const bibReference& ref) const
{
// Counting Non Empty Fields
int n(0);
bibReferenceIterator i;
for (i = ref.constBegin(); i != ref.constEnd(); ++i)
if (!i.value().isEmpty())
++n;
return n;
}
inline QString& authorFromBibTeX(QString& as)
{
// Avoid BibTeX reverse names
if (as.contains(','))
as = _authorString.toBibTeX(as, _settingsP->value("cb2Bib/UseFullNames").toBool());
return as;
}
protected:
QRegExp _field_re;
QString adjacentNumbers(const QString& numbers) const;
QStringList _bibliographic_fields;
QStringList _bibliographic_types;
QStringList _sorted_bibliographic_fields;
authorString _authorString;
settings* _settingsP;
private:
QList<QRegExp> _bib_fields_nb_re;
QList<QRegExp> _bib_fields_re;
QRegExp _bib_begin0_re;
QRegExp _bib_begin1_re;
QRegExp _bib_begin_re;
QRegExp _bib_key_re;
QRegExp _bib_type_re;
QString _bib_file_dir;
const QChar _close;
const QChar _comma;
const QChar _open;
const QChar _space;
void setFields();
void setRegularExpressions();
void setTypes();
inline int referenceStarts(const QString& str, int pos = 0) const
{
int i;
if (pos == 0)
{
i = _bib_begin0_re.indexIn(str);
if (i < 0)
i = _bib_begin1_re.indexIn(str, pos);
}
else
i = _bib_begin1_re.indexIn(str, pos);
if (i < 0)
return i;
return _bib_begin_re.indexIn(str, i);
}
inline int referenceStarts(const QString& key, const QString& str) const
{
if (!str.contains(key))
return -1;
int i(str.indexOf(QRegExp("^\\s*@\\w+\\s*\\{" + key + ',')));
if (i < 0)
i = str.indexOf(QRegExp("[\\r\\n]\\s*@\\w+\\s*\\{" + key + ','));
if (i < 0)
return i;
return str.indexOf(QRegExp("@\\w+\\s*\\{" + key + ','), i);
}
inline int referenceEnds(const QString& str, int pos = 0) const
{
// If referenceStarts call is successful, we know for sure
// that there is an opening { right after pos.
// Do not check again here.
// Checking for brace closure is the safest way for parsing.
// It will fail, though, for references incorrectly written.
// Avoid overextending in these cases by checking the
// start of the next reference.
int ref_length(referenceStarts(str, pos + 2) - 1);
if (ref_length < 0)
ref_length = str.length();
const int brace_pos(str.indexOf(_open, pos));
int open_braces(1);
for (int i = brace_pos + 1; i < ref_length; ++i)
{
const QChar& si = str.at(i);
if (si == _open)
open_braces++;
else if (si == _close)
open_braces--;
if (open_braces == 0)
return i;
}
return ref_length - 1;
}
inline void setReferenceEnd(QString* str, const int& length) const
{
// Set safer termination: field="..." } -> field="...",}
if (str->at(length - 2) == _space)
(*str)[length - 2] = _comma;
else
(*str)[length - 1] = _comma;
}
inline QString referenceAt(const QString& str, int* pos) const
{
// String str contains one or multiple references (file contents)
const int pos_(referenceEnds(str, *pos) + 1);
const QString str_ref(str.mid(*pos, pos_ - (*pos)));
*pos = pos_;
return str_ref;
}
inline void referenceContents(const QString& str, bibReference* ref, int pos)
{
// File parsing for given fields in ref
ref->positionValue = pos;
QString str_ref(referenceAt(str, &pos));
ref->pos = pos;
ref->rawReference = str_ref;
c2bUtils::bibToC2b(str_ref);
c2bUtils::simplifyString(str_ref);
ref->unicodeReference = str_ref;
_bib_key_re.indexIn(str_ref);
ref->citeidName = _bib_key_re.cap(1);
_bib_type_re.indexIn(str_ref);
ref->typeName = _bib_type_re.cap(1).toLower();
setReferenceEnd(&str_ref, str_ref.length());
QString fvalue;
for (int i = 0; i < ref->_bib_fields_re.count(); ++i)
{
QRegExp* bf = &ref->_bib_fields_re[i];
pos = bf->indexIn(str_ref);
if (pos > 0)
{
if (c2bUtils::inBraces(pos + bf->matchedLength(), str_ref, &fvalue))
(*ref)[ref->bib_fieldList.at(i)] = fvalue.trimmed();
}
else
{
bf = &ref->_bib_fields_nb_re[i];
if (bf->indexIn(str_ref) > -1)
(*ref)[ref->bib_fieldList.at(i)] = bf->cap(1).trimmed();
}
}
if (ref->contains("file"))
if (!QDir::isAbsolutePath(ref->value("file")))
(*ref)["file"] = _bib_file_dir + ref->value("file");
}
};
#endif
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