trim.h
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);
 }
 
 
ccd74334
 #endif /* TRIM_H */