1 /*-------------------------------------------------------------------------
4 * Functions for quoting identifiers and literals
6 * Portions Copyright (c) 2000-2005, PostgreSQL Global Development Group
10 * $PostgreSQL: pgsql/src/backend/utils/adt/quote.c,v 1.16 2005/07/02 17:01:50 momjian Exp $
12 *-------------------------------------------------------------------------
16 #include "utils/builtins.h"
21 * returns a properly quoted identifier
24 quote_ident(PG_FUNCTION_ARGS)
26 text *t = PG_GETARG_TEXT_P(0);
32 /* We have to convert to a C string to use quote_identifier */
33 len = VARSIZE(t) - VARHDRSZ;
34 str = (char *) palloc(len + 1);
35 memcpy(str, VARDATA(t), len);
38 qstr = quote_identifier(str);
41 result = (text *) palloc(len + VARHDRSZ);
42 VARATT_SIZEP(result) = len + VARHDRSZ;
43 memcpy(VARDATA(result), qstr, len);
45 PG_RETURN_TEXT_P(result);
50 * returns a properly quoted literal
53 quote_literal(PG_FUNCTION_ARGS)
55 text *t = PG_GETARG_TEXT_P(0);
61 len = VARSIZE(t) - VARHDRSZ;
62 /* We make a worst-case result area; wasting a little space is OK */
63 result = (text *) palloc(len * 2 + 3 + VARHDRSZ);
66 cp2 = VARDATA(result);
68 for(; len-- > 0; cp1++)
71 *cp2++ = ESCAPE_STRING_SYNTAX;
75 len = VARSIZE(t) - VARHDRSZ;
80 if (SQL_STR_DOUBLE(*cp1))
86 VARATT_SIZEP(result) = cp2 - ((char *) result);
88 PG_RETURN_TEXT_P(result);