| 8dd85148 |
/* $Id$ */
#ifndef TRIM_H
#define TRIM_H
#include "str.h"
/*
* This switch-case statement is used in
* trim_leading and trim_trailing. You can
* define char that should be skipped here.
*/
#define TRIM_SWITCH(c) switch(c) { \
case ' ': \
case '\t': \
case '\r': \
case '\n': \
break; \
\
default: \
return; \
}
/*
* Remove any leading whitechars, like spaces,
* horizontal tabs, carriage returns and line
* feeds
*
* WARNING: String descriptor structure will be
* modified ! Make a copy otherwise you
* might be unable to free _s->s for
* example !
*
*/
static inline void trim_leading(str* _s)
{
for(; _s->len > 0; _s->len--, _s->s++) {
TRIM_SWITCH(*(_s->s));
}
}
/*
* Remove any trailing white char, like spaces,
* horizontal tabs, carriage returns and line feeds
*
* WARNING: String descriptor structure will be
* modified ! Make a copy otherwise you
* might be unable to free _s->s for
* example !
*/
static inline void trim_trailing(str* _s)
{
for(; _s->len > 0; _s->len--) {
TRIM_SWITCH(_s->s[_s->len - 1]);
}
}
/*
* Do trim_leading and trim_trailing
*
* WARNING: String structure will be modified !
* Make a copy otherwise you might be
* unable to free _s->s for example !
*/
static inline void trim(str* _s)
{
trim_leading(_s);
trim_trailing(_s);
}
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