X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Fcompat%2Fstring.h;fp=src%2Fcommon%2Fcompat%2Fstring.h;h=91a1c09e2f1df86bff864da0235ba5a9989b5a1b;hb=f5436bfcf6797b979b308a9af782750f9d079686;hp=0000000000000000000000000000000000000000;hpb=ba86d0a7f267c4a00c2e8d38ae569b7c32c415ed;p=lttng-tools.git

diff --git a/src/common/compat/string.h b/src/common/compat/string.h
new file mode 100644
index 000000000..91a1c09e2
--- /dev/null
+++ b/src/common/compat/string.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2015 Michael Jeanson <mjeanson@efficios.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef _COMPAT_STRING_H
+#define _COMPAT_STRING_H
+
+#include <string.h>
+
+#ifdef HAVE_STRNLEN
+static inline
+size_t lttng_strnlen(const char *str, size_t max)
+{
+	return strnlen(str, max);
+}
+#else
+static inline
+size_t lttng_strnlen(const char *str, size_t max)
+{
+	size_t ret;
+	const char *end;
+
+	end = memchr(str, 0, max);
+
+	if (end) {
+		ret = (size_t) (end - str);
+	} else {
+		ret = max;
+	}
+
+	return ret;
+}
+#endif /* HAVE_STRNLEN */
+
+#ifdef HAVE_STRNDUP
+static inline
+char *lttng_strndup(const char *s, size_t n)
+{
+	return strndup(s, n);
+}
+#else
+static inline
+char *lttng_strndup(const char *s, size_t n)
+{
+	char *ret;
+	size_t navail;
+
+	if (!s) {
+		ret = NULL;
+		goto end;
+	}
+
+	/* min() */
+	navail = strlen(s) + 1;
+	if ((n + 1) < navail) {
+		navail = n + 1;
+	}
+
+	ret = malloc(navail);
+	if (!ret) {
+		goto end;
+	}
+
+	memcpy(ret, s, navail);
+	ret[navail - 1] = '\0';
+end:
+	return ret;
+}
+#endif /* HAVE_STRNDUP */
+
+#endif /* _COMPAT_STRING_H */