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/*
* trims any space, tab, cr or lf
* Copyright (C) 2012-2021 Mateusz Viste
*/
#include "trim.h"
void trim(char *str) {
int x, y, firstchar = -1, lastchar = -1;
/* find out first and last non-whitespace char */
for (x = 0; str[x] != 0; x++) {
switch (str[x]) {
case ' ':
case '\t':
case '\n':
case '\r':
break;
default:
if (firstchar < 0) firstchar = x;
lastchar = x;
break;
}
}
/* right trim */
str[lastchar + 1] = 0;
/* left trim (shift to the left ) */
if (firstchar > 0) {
y = 0;
for (x = firstchar; str[x] != 0; x++) str[y++] = str[x];
str[y] = 0;
}
}