From e772cb30f649c1bb8c9cb15e4c05cbf0760f2f61 Mon Sep 17 00:00:00 2001 From: Joe Hershberger Date: Tue, 11 Dec 2012 22:16:18 -0600 Subject: Make linux kernel string funcs available to tools isspace() and strim() are not in the typical user-mode string.h, so put them in a separate compilation unit so that they can be built into tools that need them independent of the other common string functions. This allows code shared by u-boot and the linux user-mode tools to link. Signed-off-by: Joe Hershberger --- lib/linux_string.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 lib/linux_string.c (limited to 'lib/linux_string.c') diff --git a/lib/linux_string.c b/lib/linux_string.c new file mode 100644 index 0000000000..d5a5e08d98 --- /dev/null +++ b/lib/linux_string.c @@ -0,0 +1,51 @@ +/* + * linux/lib/string.c + * + * Copyright (C) 1991, 1992 Linus Torvalds + */ + +#ifdef USE_HOSTCC +#include +#endif + +#include +#include + +/** + * skip_spaces - Removes leading whitespace from @str. + * @str: The string to be stripped. + * + * Returns a pointer to the first non-whitespace character in @str. + */ +char *skip_spaces(const char *str) +{ + while (isspace(*str)) + ++str; + return (char *)str; +} + +/** + * strim - Removes leading and trailing whitespace from @s. + * @s: The string to be stripped. + * + * Note that the first trailing whitespace is replaced with a %NUL-terminator + * in the given string @s. Returns a pointer to the first non-whitespace + * character in @s. + */ +char *strim(char *s) +{ + size_t size; + char *end; + + s = skip_spaces(s); + size = strlen(s); + if (!size) + return s; + + end = s + size - 1; + while (end >= s && isspace(*end)) + end--; + *(end + 1) = '\0'; + + return s; +} -- cgit v1.2.1