Adding a handy predicate function (str_parms_has_key()
Change-Id: I1af5c260a1a820b65f0850ea9adb38b01fcb183c
diff --git a/include/cutils/str_parms.h b/include/cutils/str_parms.h
index 247c996..66f3637 100644
--- a/include/cutils/str_parms.h
+++ b/include/cutils/str_parms.h
@@ -34,6 +34,12 @@
int str_parms_add_float(struct str_parms *str_parms, const char *key,
float value);
+// Returns non-zero if the str_parms contains the specified key.
+int str_parms_has_key(struct str_parms *str_parms, const char *key);
+
+// Gets value associated with the specified key (if present), placing it in the buffer
+// pointed to by the out_val parameter. Returns the length of the returned string value.
+// If 'key' isn't in the parms, then return -ENOENT (-2) and leave 'out_val' untouched.
int str_parms_get_str(struct str_parms *str_parms, const char *key,
char *out_val, int len);
int str_parms_get_int(struct str_parms *str_parms, const char *key,
diff --git a/libcutils/str_parms.c b/libcutils/str_parms.c
index 7cfbcb3..1edef11 100644
--- a/libcutils/str_parms.c
+++ b/libcutils/str_parms.c
@@ -240,6 +240,10 @@
return ret;
}
+int str_parms_has_key(struct str_parms *str_parms, const char *key) {
+ return hashmapGet(str_parms->map, (void *)key) != NULL;
+}
+
int str_parms_get_str(struct str_parms *str_parms, const char *key, char *val,
int len)
{