+
+/* -----------------------------------------------------------------------
+ * ascii.c
+ *
+ * $Header: /cvsroot/pgsql/src/backend/utils/adt/ascii.c,v 1.3 2000/08/05 14:59:17 momjian Exp $
+ *
+ * Portions Copyright (c) 1999-2000, PostgreSQL, Inc
+ *
+ *
+ * TO_ASCII()
+ *
+ * The PostgreSQL routine for string to ascii conversion.
+ *
+ * -----------------------------------------------------------------------
+ */
+
+#include "postgres.h"
+#include "utils/builtins.h"
+#include "mb/pg_wchar.h"
+#include "utils/ascii.h"
+
+/* ----------
+ * even if MULTIBYTE is not enabled, these functions are necessary
+ * since pg_proc.h has references to them.
+ * ----------
+ */
+#ifndef MULTIBYTE
+
+static void multibyte_error(void);
+
+static void
+multibyte_error()
+{
+ elog(ERROR, "multibyte not supported.");
+}
+
+Datum
+to_ascii_encname(PG_FUNCTION_ARGS)
+{
+ multibyte_error();
+}
+
+Datum
+to_ascii_enc(PG_FUNCTION_ARGS)
+{
+ multibyte_error();
+}
+
+Datum
+to_ascii_default(PG_FUNCTION_ARGS)
+{
+ multibyte_error();
+}
+
+
+#else /* with MULTIBYTE */
+
+
+/* ----------
+ * even if MULTIBYTE is enabled
+ * ----------
+ */
+
+static text *encode_to_ascii(text *data, int enc);
+
+/* ----------
+ * to_ascii
+ * ----------
+ */
+char *
+pg_to_ascii(unsigned char *src, unsigned char *src_end, unsigned char *desc, int enc)
+{
+ unsigned char *x = NULL;
+ unsigned char *ascii = NULL ;
+ int range = 0;
+
+ /*
+ * relevant start for an encoding
+ */
+ #define RANGE_128 128
+ #define RANGE_160 160
+
+
+ if (enc == LATIN1)
+ {
+ /* ----------
+ * ISO-8859-1
+ * ----------
+ */
+ ascii = " cL Y \"Ca -R 'u ., ?AAAAAAACEEEEIIII NOOOOOxOUUUUYTBaaaaaaaceeeeiiii nooooo/ouuuuyty";
+ range = RANGE_160;
+ }
+ else if (enc == LATIN2)
+ {
+ /* ----------
+ * ISO-8859-2
+ * ----------
+ */
+ ascii = " A L LS \"SSTZ-ZZ a,l'ls ,sstz\"zzRAAAALCCCEEEEIIDDNNOOOOxRUUUUYTBraaaalccceeeeiiddnnoooo/ruuuuyt.";
+ range = RANGE_160;
+ }
+ else if (enc == WIN1250)
+ {
+ /* ----------
+ * Window CP1250
+ * ----------
+ */
+ ascii = " ' \" %Sstzz L A \"CS -RZ ,l'u .,as L\"lzRAAAALCCCEEEEIIDDNNOOOOxRUUUUYTBraaaalccceeeeiiddnnoooo/ruuuuyt ";
+ range = RANGE_128;
+ }
+ else
+ {
+ elog(ERROR, "pg_to_ascii(): unsupported encoding from %s",
+ pg_encoding_to_char(enc));
+ }
+
+ /* ----------
+ * Encode
+ * ----------
+ */
+ for (x = src; x <= src_end; x++)
+ {
+ if (*x < 128)
+ *desc++ = *x;
+ else if (*x < range)
+ *desc++ = ' '; /* bogus 128 to 'range' */
+ else
+ *desc++ = ascii[*x - range];
+ }
+
+ return desc;
+}
+
+/* ----------
+ * encode text
+ * ----------
+ */
+static text *
+encode_to_ascii(text *data, int enc)
+{
+ pg_to_ascii(
+ (unsigned char *) VARDATA(data), /* src */
+ VARDATA(data) + VARSIZE(data), /* src end */
+ (unsigned char *) VARDATA(data), /* desc */
+ enc); /* encoding */
+
+ return data;
+}
+
+/* ----------
+ * convert to ASCII - enc is set as 'name' arg.
+ * ----------
+ */
+Datum
+to_ascii_encname(PG_FUNCTION_ARGS)
+{
+ PG_RETURN_TEXT_P
+ (
+ encode_to_ascii
+ (
+ PG_GETARG_TEXT_P_COPY(0),
+ pg_char_to_encoding( NameStr(*PG_GETARG_NAME(1)) )
+ )
+ );
+}
+
+/* ----------
+ * convert to ASCII - enc is set as int4
+ * ----------
+ */
+Datum
+to_ascii_enc(PG_FUNCTION_ARGS)
+{
+ PG_RETURN_TEXT_P
+ (
+ encode_to_ascii
+ (
+ PG_GETARG_TEXT_P_COPY(0),
+ PG_GETARG_INT32(1)
+ )
+ );
+}
+
+/* ----------
+ * convert to ASCII - current enc is DatabaseEncoding
+ * ----------
+ */
+Datum
+to_ascii_default(PG_FUNCTION_ARGS)
+{
+ PG_RETURN_TEXT_P
+ (
+ encode_to_ascii
+ (
+ PG_GETARG_TEXT_P_COPY(0),
+ GetDatabaseEncoding()
+ )
+ );
+}
+
+#endif /* MULTIBYTE */
\ No newline at end of file
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $Id: pg_proc.h,v 1.159 2000/08/04 20:46:43 momjian Exp $
+ * $Id: pg_proc.h,v 1.160 2000/08/05 14:59:19 momjian Exp $
*
* NOTES
* The script catalog/genbki.sh reads this file and generates .bki
DATA(insert OID = 1844 ( interval_avg PGUID 12 f t t t 1 f 1186 "1187" 100 0 0 100 interval_avg - ));
DESCR("AVG aggregate final function");
+/* To ASCII conversion */
+DATA(insert OID = 1845 ( to_ascii PGUID 12 f t t t 1 f 25 "25" 100 0 0 100 to_ascii_default - ));
+DESCR("encode text from DB encoding to ASCII text");
+DATA(insert OID = 1846 ( to_ascii PGUID 12 f t t t 2 f 25 "25 23" 100 0 0 100 to_ascii_enc - ));
+DESCR("encode text from encoding to ASCII text");
+DATA(insert OID = 1847 ( to_ascii PGUID 12 f t t t 2 f 25 "25 19" 100 0 0 100 to_ascii_encname - ));
+DESCR("encode text from encoding to ASCII text");
+
DATA(insert OID = 1850 ( int28eq PGUID 12 f t t t 2 f 16 "21 20" 100 0 0 100 int28eq - ));
DESCR("equal");
DATA(insert OID = 1851 ( int28ne PGUID 12 f t t t 2 f 16 "21 20" 100 0 0 100 int28ne - ));
+
+/* -----------------------------------------------------------------------
+ * ascii.h
+ *
+ * $Id: ascii.h,v 1.3 2000/08/05 14:59:29 momjian Exp $
+ *
+ * Portions Copyright (c) 1999-2000, PostgreSQL, Inc
+ *
+ * -----------------------------------------------------------------------
+ */
+
+#ifndef _ASCII_H_
+#define _ASCII_H_
+
+#include "fmgr.h"
+
+extern Datum to_ascii_encname(PG_FUNCTION_ARGS);
+extern Datum to_ascii_enc(PG_FUNCTION_ARGS);
+extern Datum to_ascii_default(PG_FUNCTION_ARGS);
+
+#ifdef MULTIBYTE
+
+extern char *pg_to_ascii(unsigned char *src, unsigned char *src_end,
+ unsigned char *desc, int enc);
+#endif /* MULTIBYTE */
+
+#endif /* _ASCII_H_ */
projects / postgresql.git / commitdiff