Move modules to ccan/ tools to tools/

[ccan] / ccan / string / string.h

diff --git a/ccan/string/string.h b/ccan/string/string.h
new file mode 100644 (file)
index 0000000..f4997c6
--- /dev/null
+++ b/ccan/string/string.h
@@ -0,0 +1,46 @@
+#ifndef CCAN_STRING_H
+#define CCAN_STRING_H
+#include <string.h>
+#include <stdbool.h>
+
+/**
+ * streq - Are two strings equal?
+ * @a: first string
+ * @b: first string
+ *
+ * This macro is arguably more readable than "!strcmp(a, b)".
+ *
+ * Example:
+ *     if (streq(str, ""))
+ *             printf("String is empty!\n");
+ */
+#define streq(a,b) (strcmp((a),(b)) == 0)
+
+/**
+ * strstarts - Does this string start with this prefix?
+ * @str: string to test
+ * @prefix: prefix to look for at start of str
+ *
+ * Example:
+ *     if (strstarts(str, "foo"))
+ *             printf("String %s begins with 'foo'!\n", str);
+ */
+#define strstarts(str,prefix) (strncmp((str),(prefix),strlen(prefix)) == 0)
+
+/**
+ * strends - Does this string end with this postfix?
+ * @str: string to test
+ * @postfix: postfix to look for at end of str
+ *
+ * Example:
+ *     if (strends(str, "foo"))
+ *             printf("String %s end with 'foo'!\n", str);
+ */
+static inline bool strends(const char *str, const char *postfix)
+{
+       if (strlen(str) < strlen(postfix))
+               return false;
+
+       return streq(str + strlen(str) - strlen(postfix), postfix);
+}
+#endif /* CCAN_STRING_H */