The function parses command line arguments in "key=val" format, and
treats "key" as "key=1".
Signed-off-by: Radim Krčmář <rkrcmar@xxxxxxxxxx>
---
v4: new
lib/util.c | 17 +++++++++++++++++
lib/util.h | 10 ++++++++++
2 files changed, 27 insertions(+)
diff --git a/lib/util.c b/lib/util.c
index 69b18100c972..8b33d474f4c0 100644
--- a/lib/util.c
+++ b/lib/util.c
@@ -16,3 +16,20 @@ int parse_keyval(char *s, long *val)
*val = atol(p+1);
return p - s;
}
+
+long args_parse_keyval(int argc, char **argv, char *key)
+{
+ int i;
+ size_t keylen = strlen(key);
+
+ for (i = 1; i < argc; i++) {
+ if (keylen > 0 && strncmp(argv[i], key, keylen - 1))
+ continue;
+ if (argv[i][keylen] == '\0')
+ return 1;
+ if (argv[i][keylen] == '=')
+ return atol(argv[i] + keylen + 1);
+ }
+
+ return 0;
+}
diff --git a/lib/util.h b/lib/util.h
index 4c4b44132277..d475b058526b 100644
--- a/lib/util.h
+++ b/lib/util.h
@@ -20,4 +20,14 @@
*/
extern int parse_keyval(char *s, long *val);
+/*
+ * argc and argv are standard C arguments to main().
+ * args_parse_keyval looks for an element of argv that matches the key.
+ * Returns val interpreted as a long if the element is in key=val format.
+ * Returns 1 if the element is key.
+ * Returns 0 otherwise.
+ *
+ */
+long args_parse_keyval(int argc, char **argv, char *key);
+
#endif
--
2.8.2
--
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