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tools lib: Adopt strreplace() from the kernel

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We'll use it to further reduce the size of tools/perf/util/string.c,
replacing the strxfrchar() equivalent function we have there.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-x3r61ikjrso1buygxwke8id3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2019-06-26 12:24:03 -03:00
parent 13c230ab6e
commit 2a60689a33
2 changed files with 18 additions and 0 deletions
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2
tools/include/linux/string.h
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@ -19,6 +19,8 @@ extern size_t strlcpy(char *dest, const char *src, size_t size);
char *str_error_r(int errnum, char *buf, size_t buflen);
char *strreplace(char *s, char old, char new);
/**
* strstarts - does @str start with @prefix?
* @str: string to examine

16
tools/lib/string.c
View File

@ -145,3 +145,19 @@ char *strim(char *s)
return skip_spaces(s);
}
/**
* strreplace - Replace all occurrences of character in string.
* @s: The string to operate on.
* @old: The character being replaced.
* @new: The character @old is replaced with.
*
* Returns pointer to the nul byte at the end of @s.
*/
char *strreplace(char *s, char old, char new)
{
for (; *s; ++s)
if (*s == old)
*s = new;
return s;
}