* is equivalent to the Perl built-in `join'.
*
* PARAMETERS
- * `dst' Buffer where the result is stored.
+ * `dst' Buffer where the result is stored. Can be NULL if you need to
+ * determine the required buffer size only.
* `dst_len' Length of the destination buffer. No more than this many
* bytes will be written to the memory pointed to by `dst',
- * including the trailing null-byte.
+ * including the trailing null-byte. Must be zero if dst is
+ * NULL.
* `fields' Array of strings to be joined.
* `fields_num' Number of elements in the `fields' array.
* `sep' String to be inserted between any two elements of `fields'.
* Instead of passing "" (empty string) one can pass NULL.
*
* RETURN VALUE
- * Returns the number of characters in `dst', NOT including the trailing
- * null-byte. If an error occurred (empty array or `dst' too small) a value
- * smaller than zero will be returned.
+ * Returns the number of characters in the resulting string, excluding a
+ * tailing null byte. If this value is greater than or equal to "dst_len", the
+ * result in "dst" is truncated (but still null terminated). On error a
+ * negative value is returned.
*/
int strjoin(char *dst, size_t dst_len, char **fields, size_t fields_num,
const char *sep);
int parse_identifier(char *str, char **ret_host, char **ret_plugin,
char **ret_plugin_instance, char **ret_type,
- char **ret_type_instance);
+ char **ret_type_instance, char *default_host);
int parse_identifier_vl(const char *str, value_list_t *vl);
int parse_value(const char *value, value_t *ret_value, int ds_type);
int parse_values(char *buffer, value_list_t *vl, const data_set_t *ds);
+/* parse_value_file reads "path" and parses its content as an integer or
+ * floating point, depending on "ds_type". On success, the value is stored in
+ * "ret_value" and zero is returned. On failure, a non-zero value is returned.
+ */
+int parse_value_file(char const *path, value_t *ret_value, int ds_type);
+
#if !HAVE_GETPWNAM_R
int getpwnam_r(const char *name, struct passwd *pwbuf, char *buf, size_t buflen,
struct passwd **pwbufp);