tools lib string: Adopt prefixcmp() from perf and subcmd

Both had copies originating from git.git, move those to tools/lib/string.c, getting both tools/lib/subcmd/ and tools/perf/ to use it.

Arnaldo Carvalho de Melo committed 9 years ago

Commit 96395cb1 parent 3caeafc7 files · +13 −20Browse files

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@@ -87,3 +87,12 @@ size_t __weak strlcpy(char dest, const char src, size_t size) · 86 unmodified lines
87	87	}
88	88	return ret;
89	89	}
	90	+
	91	+int prefixcmp(const char str, const char prefix)
	92	+{
	93	+ for (; ; str++, prefix++)
	94	+ if (!*prefix)
	95	+ return 0;
	96	+ else if (str != prefix)
	97	+ return (unsigned char)prefix - (unsigned char)str;
	98	+}