blob: 16cb4fbb07f256794e1047041d710d3b923dd816
| 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* |
| 3 | * Utility routines. |
| 4 | * |
| 5 | * Copyright (C) many different people. |
| 6 | * If you wrote this, please acknowledge your work. |
| 7 | * |
| 8 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
| 9 | */ |
| 10 | |
| 11 | #include "libbb.h" |
| 12 | |
| 13 | void FAST_FUNC trim(char *s) |
| 14 | { |
| 15 | size_t len = strlen(s); |
| 16 | |
| 17 | /* trim trailing whitespace */ |
| 18 | while (len && isspace(s[len-1])) |
| 19 | --len; |
| 20 | |
| 21 | /* trim leading whitespace */ |
| 22 | if (len) { |
| 23 | char *nws = skip_whitespace(s); |
| 24 | if ((nws - s) != 0) { |
| 25 | len -= (nws - s); |
| 26 | memmove(s, nws, len); |
| 27 | } |
| 28 | } |
| 29 | s[len] = '\0'; |
| 30 | } |
| 31 |