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author | Andrew Gregory <andrew.gregory.8@gmail.com> | 2015-09-15 00:37:38 +0200 |
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committer | Allan McRae <allan@archlinux.org> | 2015-09-20 09:36:27 +0200 |
commit | edbe6c2bdc6a3011e5aea208c44be5eee02f120b (patch) | |
tree | bee3474adf643e425f5482813b50fec8db19fc28 /src/common/util-common.c | |
parent | 75fe6ef104b1071bf763354177f3c4339c1c7854 (diff) | |
download | pacman-edbe6c2bdc6a3011e5aea208c44be5eee02f120b.tar.gz pacman-edbe6c2bdc6a3011e5aea208c44be5eee02f120b.tar.xz |
move strtrim to util-common
Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>
Diffstat (limited to 'src/common/util-common.c')
-rw-r--r-- | src/common/util-common.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/common/util-common.c b/src/common/util-common.c index e8341688..542dcfde 100644 --- a/src/common/util-common.c +++ b/src/common/util-common.c @@ -17,6 +17,7 @@ * along with this program. If not, see <http://www.gnu.org/licenses/>. */ +#include <ctype.h> #include <errno.h> #include <stdlib.h> #include <string.h> @@ -127,6 +128,44 @@ char *safe_fgets(char *s, int size, FILE *stream) return ret; } +/* Trim whitespace and newlines from a string + */ +size_t strtrim(char *str) +{ + char *end, *pch = str; + + if(str == NULL || *str == '\0') { + /* string is empty, so we're done. */ + return 0; + } + + while(isspace((unsigned char)*pch)) { + pch++; + } + if(pch != str) { + size_t len = strlen(pch); + if(len) { + memmove(str, pch, len + 1); + pch = str; + } else { + *str = '\0'; + } + } + + /* check if there wasn't anything but whitespace in the string. */ + if(*str == '\0') { + return 0; + } + + end = (str + strlen(str) - 1); + while(isspace((unsigned char)*end)) { + end--; + } + *++end = '\0'; + + return end - pch; +} + #ifndef HAVE_STRNLEN /* A quick and dirty implementation derived from glibc */ /** Determines the length of a fixed-size string. |