Add sample text search dictionary templates and parsers, to replace the

hard-to-maintain textual examples currently in the SGML docs.  From
Sergey Karpov.

1 files changed, 99 insertions, 0 deletions

diff --git a/contrib/dict_int/dict_int.c b/contrib/dict_int/dict_int.c
new file mode 100644
index 00000000000..85d45491ccb
--- /dev/null
+++ b/contrib/dict_int/dict_int.c
@@ -0,0 +1,99 @@
+/*-------------------------------------------------------------------------
+ *
+ * dict_int.c
+ *	  Text search dictionary for integers
+ *
+ * Copyright (c) 2007, PostgreSQL Global Development Group
+ *
+ * IDENTIFICATION
+ *	  $PostgreSQL: pgsql/contrib/dict_int/dict_int.c,v 1.1 2007/10/15 21:36:50 tgl Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#include "postgres.h"
+
+#include "commands/defrem.h"
+#include "fmgr.h"
+#include "tsearch/ts_public.h"
+
+PG_MODULE_MAGIC;
+
+
+typedef struct {
+	int     maxlen;
+	bool    rejectlong;
+} DictInt;
+
+
+PG_FUNCTION_INFO_V1(dintdict_init);
+Datum dintdict_init(PG_FUNCTION_ARGS);
+
+PG_FUNCTION_INFO_V1(dintdict_lexize);
+Datum dintdict_lexize(PG_FUNCTION_ARGS);
+
+Datum
+dintdict_init(PG_FUNCTION_ARGS)
+{
+	List		*dictoptions = (List *) PG_GETARG_POINTER(0);
+	DictInt 	*d;
+	ListCell	*l;
+
+	d = (DictInt *) palloc0(sizeof(DictInt));
+	d->maxlen = 6;
+	d->rejectlong = false;
+
+	foreach(l, dictoptions)
+	{
+		DefElem *defel = (DefElem *) lfirst(l);
+
+		if (pg_strcasecmp(defel->defname, "MAXLEN") == 0)
+		{
+			d->maxlen = atoi(defGetString(defel));
+		}
+		else if (pg_strcasecmp(defel->defname, "REJECTLONG") == 0)
+		{
+			d->rejectlong = defGetBoolean(defel);
+		}
+		else
+		{
+			ereport(ERROR,
+					(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+					 errmsg("unrecognized intdict parameter: \"%s\"",
+							defel->defname)));
+		}
+	}
+	
+	PG_RETURN_POINTER(d);
+}
+
+Datum
+dintdict_lexize(PG_FUNCTION_ARGS)
+{
+	DictInt *d = (DictInt*)PG_GETARG_POINTER(0);
+	char       *in = (char*)PG_GETARG_POINTER(1);
+	char *txt = pnstrdup(in, PG_GETARG_INT32(2));
+	TSLexeme *res=palloc(sizeof(TSLexeme)*2);
+
+	res[1].lexeme = NULL;
+	if  (PG_GETARG_INT32(2) > d->maxlen)
+	{
+		if ( d->rejectlong )
+		{
+			/* reject by returning void array */
+			pfree(txt);
+			res[0].lexeme = NULL;
+		}
+		else
+		{
+			/* trim integer */
+			txt[d->maxlen] = '\0';
+			res[0].lexeme = txt;
+		}
+	}
+	else
+	{
+		res[0].lexeme = txt;
+	}
+
+	PG_RETURN_POINTER(res);
+}