Method Getopt.find_all_options()

Method find_all_options

array(array) find_all_options(array(string) argv, array(array(array(string)|string|int)) options, void|int(-1..1) posix_me_harder, void|int throw_errors)

Description

This function does the job of several calls to find_option(). The main advantage of this is that it allows it to handle the POSIX_ME_HARDER environment variable better. When either the argument posix_me_harder or the environment variable POSIX_ME_HARDER is true, no arguments will be parsed after the first non-option on the command line.

Parameter argv

The should be the array of strings that was sent as the second argument to your main() function.

Parameter options

Each element in the array options should be an array on the following form:

Array
string name	Name is a tag used to identify the option in the output.
int type	Type is one of Getopt.HAS_ARG, Getopt.NO_ARG and Getopt.MAY_HAVE_ARG and it affects how the error handling and parsing works. You should use HAS_ARG for options that require a path, a number or similar. NO_ARG should be used for options that do not need an argument, such as --version. MAY_HAVE_ARG should be used for options that may or may not need an argument.
string|array(string) aliases	This is a string or an array of string of options that will be looked for. Short and long options can be mixed, and short options can be combined into one string. Note that you must include the dashes so that find_all_options() can distinguish between long and short options. Example: ({"-tT","--test"}) This would make find_all_options look for -t, -T and --test.
void|string|array(string) env_var	This is a string or an array of strings containing names of environment variables that can be used instead of the command line option.
void|mixed default	This is the default value a MAY_HAVE_ARG option will have in the output if it was set but not assigned any value.

Only the first three elements need to be included.

Parameter posix_me_harder

Don't scan for arguments after the first non-option.

Parameter throw_errors

If throw_errors has been specified find_all_options() will throw errors on failure. If it has been left out, or is 0 (zero), it will instead print an error message on Stdio.stderr and exit the program with result code 1 on failure.

Returns

The good news is that the output from this function is a lot simpler. find_all_options() returns an array where each element is an array on this form:

Array
string name	Option identifier name from the input.
mixed value	Value given. If no value was specified, and no default has been specified, the value will be 1.

Note

find_all_options() modifies argv.

Index 0 (zero) of argv is not scanned for options, since it is reserved for the program name.

See also

Getopt.get_args(), Getopt.find_option()