From 2098f1d8c20d51e63e670bcdc9da8996068975bf Mon Sep 17 00:00:00 2001
From: Richard Heck <rgheck@comcast.net>
Date: Fri, 8 Jan 2010 18:19:13 +0000
Subject: [PATCH] Routines for calculating numerical labels for BibTeX
 citations.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@32891 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/BiblioInfo.cpp | 21 +++++++++++++++++++++
 src/BiblioInfo.h   |  9 +++++++++
 2 files changed, 30 insertions(+)

diff --git a/src/BiblioInfo.cpp b/src/BiblioInfo.cpp
index d8297d0303..bb9b27f7fe 100644
--- a/src/BiblioInfo.cpp
+++ b/src/BiblioInfo.cpp
@@ -26,6 +26,7 @@
 #include "insets/InsetBibtex.h"
 #include "insets/InsetInclude.h"
 
+#include "support/convert.h"
 #include "support/docstream.h"
 #include "support/gettext.h"
 #include "support/lassert.h"
@@ -657,6 +658,26 @@ void BiblioInfo::collectCitedEntries(Buffer const & buf)
 }
 
 
+void BiblioInfo::makeCitationLabels(Buffer const & buf)
+{
+	collectCitedEntries(buf);
+	// FIXME It'd be nice to do author-year as well as numerical
+	// and maybe even some other sorts of labels.
+	vector<docstring>::const_iterator it = cited_entries_.begin();
+	vector<docstring>::const_iterator const en = cited_entries_.end();
+	int keynumber = 0;
+	for (; it != en; ++it) {
+		map<docstring, BibTeXInfo>::iterator const biit = bimap_.find(*it);
+		// this shouldn't happen, but...
+		if (biit == bimap_.end())
+			continue;
+		BibTeXInfo & entry = biit->second;
+		docstring const key = convert<docstring>(++keynumber);
+		entry.setCiteKey(key);
+	}
+}
+
+
 //////////////////////////////////////////////////////////////////////
 //
 // CitationStyle
diff --git a/src/BiblioInfo.h b/src/BiblioInfo.h
index 0cb21fc0cb..658a4ad027 100644
--- a/src/BiblioInfo.h
+++ b/src/BiblioInfo.h
@@ -91,6 +91,10 @@ public:
 	///
 	docstring const & key() const { return bib_key_; }
 	///
+	docstring citeKey() const { return cite_key_; }
+	///
+	void setCiteKey(docstring const & k) { cite_key_ = k; }
+	///
 	docstring entryType() const { return entry_type_; }
 	/// 
 	bool isBibTeX() const { return is_bibtex_; }
@@ -114,6 +118,9 @@ private:
 	docstring entry_type_;
 	/// a cache for getInfo()
 	mutable docstring info_;
+	/// key to use when citing this entry 
+	/// currently used only by XHTML output routines
+	docstring cite_key_;
 	/// our map: <field, value>
 	std::map <docstring, docstring> bimap_;
 };
@@ -176,6 +183,8 @@ public:
 	/// the last name of the author.
 	std::vector<docstring> const & citedEntries() const { return cited_entries_; }
 	///
+	void makeCitationLabels(Buffer const & buf);
+	///
 	const_iterator begin() const { return bimap_.begin(); }
 	///
 	void clear() { bimap_.clear(); }
-- 
2.39.5