work with config files written in rfc.zeromq.org/spec:4/ZPL. Create new config item Destroy a config item and all its children Return name of config item Return value of config item Insert or update configuration key with value Equivalent to zconfig_put, accepting a format specifier and variable argument list, instead of a single string value. Get value for config item into a string value; leading slash is optional and ignored. Set config item name, name may be NULL Set new value for config item. The new value may be a string, a printf format, or NULL. Note that if string may possibly contain '%', or if it comes from an insecure source, you must use '%s' as the format, followed by the string. Find our first child, if any Find our first sibling, if any Find a config item along a path; leading slash is optional and ignored. Locate the last config item at a specified depth Execute a callback for each config item in the tree; returns zero if successful, else -1. Add comment to config item before saving to disk. You can add as many comment lines as you like. If you use a null format, all comments are deleted. Return comments of config item, as zlist. Load a config tree from a specified ZPL text file; returns a zconfig_t reference for the root, if the file exists and is readable. Returns NULL if the file does not exist. Save a config tree to a specified ZPL text file, where a filename "-" means dump to standard output. Equivalent to zconfig_load, taking a format string instead of a fixed filename. Equivalent to zconfig_save, taking a format string instead of a fixed filename. Report filename used during zconfig_load, or NULL if none Reload config tree from same file that it was previously loaded from. Returns 0 if OK, -1 if there was an error (and then does not change existing data). Load a config tree from a memory chunk Save a config tree to a new memory chunk Load a config tree from a null-terminated string Save a config tree to a new null terminated string Return true if a configuration tree was loaded from a file and that file has changed in since the tree was loaded. Print the config file to open stream Print properties of object Self test of this class