diff options
Diffstat (limited to 'src/backend/utils/adt/char.c')
| -rw-r--r-- | src/backend/utils/adt/char.c | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/src/backend/utils/adt/char.c b/src/backend/utils/adt/char.c deleted file mode 100644 index c31995fdf06..00000000000 --- a/src/backend/utils/adt/char.c +++ /dev/null @@ -1,243 +0,0 @@ -/*------------------------------------------------------------------------- - * - * char.c - * Functions for the built-in type "char". - * Functions for the built-in type "cid" (what's that doing here?) - * - * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group - * Portions Copyright (c) 1994, Regents of the University of California - * - * - * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/utils/adt/char.c,v 1.33 2002/06/20 20:29:36 momjian Exp $ - * - *------------------------------------------------------------------------- - */ -#include "postgres.h" - -#include "utils/builtins.h" - -/***************************************************************************** - * USER I/O ROUTINES * - *****************************************************************************/ - -/* - * charin - converts "x" to 'x' - * - * Note that an empty input string will implicitly be converted to \0. - */ -Datum -charin(PG_FUNCTION_ARGS) -{ - char *ch = PG_GETARG_CSTRING(0); - - PG_RETURN_CHAR(ch[0]); -} - -/* - * charout - converts 'x' to "x" - * - * Note that if the char value is \0, the resulting string will appear - * to be empty (null-terminated after zero characters). So this is the - * inverse of the charin() function for such data. - */ -Datum -charout(PG_FUNCTION_ARGS) -{ - char ch = PG_GETARG_CHAR(0); - char *result = (char *) palloc(2); - - result[0] = ch; - result[1] = '\0'; - PG_RETURN_CSTRING(result); -} - -/***************************************************************************** - * PUBLIC ROUTINES * - *****************************************************************************/ - -/* - * NOTE: comparisons are done as though char is unsigned (uint8). - * Arithmetic is done as though char is signed (int8). - * - * You wanted consistency? - */ - -Datum -chareq(PG_FUNCTION_ARGS) -{ - char arg1 = PG_GETARG_CHAR(0); - char arg2 = PG_GETARG_CHAR(1); - - PG_RETURN_BOOL(arg1 == arg2); -} - -Datum -charne(PG_FUNCTION_ARGS) -{ - char arg1 = PG_GETARG_CHAR(0); - char arg2 = PG_GETARG_CHAR(1); - - PG_RETURN_BOOL(arg1 != arg2); -} - -Datum -charlt(PG_FUNCTION_ARGS) -{ - char arg1 = PG_GETARG_CHAR(0); - char arg2 = PG_GETARG_CHAR(1); - - PG_RETURN_BOOL((uint8) arg1 < (uint8) arg2); -} - -Datum -charle(PG_FUNCTION_ARGS) -{ - char arg1 = PG_GETARG_CHAR(0); - char arg2 = PG_GETARG_CHAR(1); - - PG_RETURN_BOOL((uint8) arg1 <= (uint8) arg2); -} - -Datum -chargt(PG_FUNCTION_ARGS) -{ - char arg1 = PG_GETARG_CHAR(0); - char arg2 = PG_GETARG_CHAR(1); - - PG_RETURN_BOOL((uint8) arg1 > (uint8) arg2); -} - -Datum -charge(PG_FUNCTION_ARGS) -{ - char arg1 = PG_GETARG_CHAR(0); - char arg2 = PG_GETARG_CHAR(1); - - PG_RETURN_BOOL((uint8) arg1 >= (uint8) arg2); -} - -Datum -charpl(PG_FUNCTION_ARGS) -{ - char arg1 = PG_GETARG_CHAR(0); - char arg2 = PG_GETARG_CHAR(1); - - PG_RETURN_CHAR((int8) arg1 + (int8) arg2); -} - -Datum -charmi(PG_FUNCTION_ARGS) -{ - char arg1 = PG_GETARG_CHAR(0); - char arg2 = PG_GETARG_CHAR(1); - - PG_RETURN_CHAR((int8) arg1 - (int8) arg2); -} - -Datum -charmul(PG_FUNCTION_ARGS) -{ - char arg1 = PG_GETARG_CHAR(0); - char arg2 = PG_GETARG_CHAR(1); - - PG_RETURN_CHAR((int8) arg1 * (int8) arg2); -} - -Datum -chardiv(PG_FUNCTION_ARGS) -{ - char arg1 = PG_GETARG_CHAR(0); - char arg2 = PG_GETARG_CHAR(1); - - PG_RETURN_CHAR((int8) arg1 / (int8) arg2); -} - - -Datum -text_char(PG_FUNCTION_ARGS) -{ - text *arg1 = PG_GETARG_TEXT_P(0); - char result; - - /* - * An empty input string is converted to \0 (for consistency with - * charin). If the input is longer than one character, the excess data - * is silently discarded. - */ - if (VARSIZE(arg1) > VARHDRSZ) - result = *(VARDATA(arg1)); - else - result = '\0'; - - PG_RETURN_CHAR(result); -} - -Datum -char_text(PG_FUNCTION_ARGS) -{ - char arg1 = PG_GETARG_CHAR(0); - text *result = palloc(VARHDRSZ + 1); - - /* - * Convert \0 to an empty string, for consistency with charout (and - * because the text stuff doesn't like embedded nulls all that well). - */ - if (arg1 != '\0') - { - VARATT_SIZEP(result) = VARHDRSZ + 1; - *(VARDATA(result)) = arg1; - } - else - VARATT_SIZEP(result) = VARHDRSZ; - - PG_RETURN_TEXT_P(result); -} - - -/***************************************************************************** - * USER I/O ROUTINES * - *****************************************************************************/ - -/* - * cidin - converts CommandId to internal representation. - */ -Datum -cidin(PG_FUNCTION_ARGS) -{ - char *s = PG_GETARG_CSTRING(0); - CommandId c; - - c = atoi(s); - - /* XXX assume that CommandId is 32 bits... */ - PG_RETURN_INT32((int32) c); -} - -/* - * cidout - converts a cid to external representation. - */ -Datum -cidout(PG_FUNCTION_ARGS) -{ - /* XXX assume that CommandId is 32 bits... */ - CommandId c = PG_GETARG_INT32(0); - char *result = (char *) palloc(16); - - sprintf(result, "%u", (unsigned int) c); - PG_RETURN_CSTRING(result); -} - -/***************************************************************************** - * PUBLIC ROUTINES * - *****************************************************************************/ - -Datum -cideq(PG_FUNCTION_ARGS) -{ - /* XXX assume that CommandId is 32 bits... */ - CommandId arg1 = PG_GETARG_INT32(0); - CommandId arg2 = PG_GETARG_INT32(1); - - PG_RETURN_BOOL(arg1 == arg2); -} |