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authorArnaldo Carvalho de Melo <acme@redhat.com>2019-06-26 11:50:16 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2019-06-26 11:50:16 -0300
commit45bfd0ac7bd2afa83600df9c1286a1642bb15c55 (patch)
treeadf9156b80e49def0ff60a44774114fb1273f8b4 /tools/lib/string.c
parent328584804edc950fb4608c9a38e396ac71ef22b6 (diff)
tools lib: Adopt strim() from the kernel
Since we're working on moving stuff out of tools/perf/util/ to tools/lib/, take the opportunity to adopt routines from the kernel that are equivalent, so that tools/ code look more like the kernel. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: André Goddard Rosa <andre.goddard@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-zqy1zdu2ok17qvi0ytk8z13c@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib/string.c')
-rw-r--r--tools/lib/string.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/tools/lib/string.c b/tools/lib/string.c
index 50d400822bb3..80472e6b3829 100644
--- a/tools/lib/string.c
+++ b/tools/lib/string.c
@@ -120,3 +120,28 @@ char *skip_spaces(const char *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;
+
+ size = strlen(s);
+ if (!size)
+ return s;
+
+ end = s + size - 1;
+ while (end >= s && isspace(*end))
+ end--;
+ *(end + 1) = '\0';
+
+ return skip_spaces(s);
+}