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/*-------------------------------------------------------------------------
*
* stringutils.c--
* simple string manipulation routines
*
* Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/bin/psql/stringutils.c,v 1.11 1997/09/07 04:55:27 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include "postgres.h"
#ifndef HAVE_STRDUP
#include "strdup.h"
#endif
#include "stringutils.h"
/* all routines assume null-terminated strings! */
/* The following routines remove whitespaces from the left, right
and both sides of a string */
/* MODIFIES the string passed in and returns the head of it */
#ifdef NOT_USED
static char *
leftTrim(char *s)
{
char *s2 = s;
int shift = 0;
int j = 0;
while (isspace(*s))
{
s++;
shift++;
}
if (shift > 0)
{
while ((s2[j] = s2[j + shift]) != '\0')
j++;
}
return s2;
}
#endif
char *
rightTrim(char *s)
{
char *sEnd;
sEnd = s + strlen(s) - 1;
while (sEnd >= s && isspace(*sEnd))
sEnd--;
if (sEnd < s)
s[0] = '\0';
else
s[sEnd - s + 1] = '\0';
return s;
}
#ifdef NOT_USED
static char *
doubleTrim(char *s)
{
strcpy(s, leftTrim(rightTrim(s)));
return s;
}
#endif
#ifdef STRINGUTILS_TEST
void
testStringUtils()
{
static char *tests[] = {" goodbye \n", /* space on both ends */
"hello world", /* no spaces to trim */
"", /* empty string */
"a", /* string with one char */
" ", /* string with one whitespace */
NULL_STR};
int i = 0;
while (tests[i] != NULL_STR)
{
char *t;
t = strdup(tests[i]);
printf("leftTrim(%s) = ", t);
printf("%sEND\n", leftTrim(t));
t = strdup(tests[i]);
printf("rightTrim(%s) = ", t);
printf("%sEND\n", rightTrim(t));
t = strdup(tests[i]);
printf("doubleTrim(%s) = ", t);
printf("%sEND\n", doubleTrim(t));
i++;
}
}
#endif
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