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-rw-r--r--support/texlab/crates/bibutils_sys/src/serialno.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/support/texlab/crates/bibutils_sys/src/serialno.c b/support/texlab/crates/bibutils_sys/src/serialno.c
new file mode 100644
index 0000000000..77e09b456d
--- /dev/null
+++ b/support/texlab/crates/bibutils_sys/src/serialno.c
@@ -0,0 +1,56 @@
+/*
+ * serialno.c
+ *
+ * Copyright (c) Chris Putnam 2005-2019
+ *
+ * Source code released under the GPL version 2
+ *
+ */
+#include <string.h>
+#include "serialno.h"
+#include "msvc_fix.h"
+
+int
+addsn( fields *info, char *buf, int level )
+{
+ int ndigits, issn=0, isbn=0, isbn10=0, isbn13=0, status;
+ char *p = buf, *tag;
+
+ if ( !strncasecmp( p, "ISSN", 4 ) ) issn=1;
+ else if ( !strncasecmp( p, "ISBN", 4 ) ) isbn=1;
+
+ if ( isbn ) {
+ ndigits = 0;
+ while ( *p && !(ndigits && (*p==';'||*p==':')) ) {
+ if ( ( *p>='0' && *p<='9' ) || *p=='x' || *p=='X' )
+ ndigits++;
+ p++;
+ }
+ if ( ndigits==13 ) isbn13 = 1;
+ else /* ( ndigits==10) */ isbn10 = 1;
+ }
+
+ if ( !issn && !isbn ) {
+ /* a lot have semicolons between multiple ISBN's for
+ paperbacks and hardbacks with different numbers */
+ ndigits = 0;
+ while ( *p && !(ndigits && (*p==';'||*p==':')) ) {
+ if ( ( *p>='0' && *p<='9' ) || *p=='x' || *p=='X' )
+ ndigits++;
+ p++;
+ }
+ if ( ndigits==8 ) issn = 1;
+ else if ( ndigits==10 ) isbn10 = 1;
+ else if ( ndigits==13 ) isbn13 = 1;
+ }
+
+ if ( issn ) tag = "ISSN";
+ else if ( isbn10 ) tag = "ISBN";
+ else if ( isbn13 ) tag = "ISBN13";
+ else tag = "SERIALNUMBER";
+
+ status = fields_add( info, tag, buf, level );
+
+ if ( status==FIELDS_OK ) return 1;
+ else return 0;
+}