move parseopt to lib/

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

2 files changed, 61 insertions, 0 deletions

diff --git a/lib/Makefile b/lib/Makefile
index 1be1742499..8f7ef4e4ed 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -59,3 +59,4 @@ obj-y			+= reed_solomon/
 obj-$(CONFIG_RATP)	+= ratp.o
 obj-y			+= list_sort.o
 obj-y			+= int_sqrt.o
+obj-y			+= parseopt.o
diff --git a/lib/parseopt.c b/lib/parseopt.c
new file mode 100644
index 0000000000..8ff83019a7
--- /dev/null
+++ b/lib/parseopt.c
@@ -0,0 +1,60 @@
+#include <common.h>
+
+#include "parseopt.h"
+
+void parseopt_b(const char *options, const char *opt, bool *val)
+{
+	const char *start;
+	size_t optlen = strlen(opt);
+
+again:
+	start = strstr(options, opt);
+
+	if (!start) {
+		*val = false;
+		return;
+	}
+
+	if (start > options && start[-1] != ',') {
+		options = start;
+		goto again;
+	}
+
+	if (start[optlen] != ',' && start[optlen] != '\0') {
+		options = start;
+		goto again;
+	}
+
+	*val = true;
+}
+
+void parseopt_hu(const char *options, const char *opt, unsigned short *val)
+{
+	const char *start;
+	size_t optlen = strlen(opt);
+	ulong v;
+	char *endp;
+
+again:
+	start = strstr(options, opt);
+
+	if (!start)
+		return;
+
+	if (start > options && start[-1] != ',') {
+		options = start;
+		goto again;
+	}
+
+	if (start[optlen] != '=') {
+		options = start;
+		goto again;
+	}
+
+	v = simple_strtoul(start + optlen + 1, &endp, 0);
+	if (v > USHRT_MAX)
+		return;
+
+	if (*endp == ',' || *endp == '\0')
+		*val = v;
+}