flap_command_line_argument_t

Command Line Argument (CLA) class.

Source: src/lib/flap_command_line_argument_t.F90

Dependencies

Contents

• command_line_argument
• free
• check
• set_source_value
• check_paths
• match_inline_token
• append_value
• count_occurrences
• set_inline_value
• raise_error_m_exclude
• raise_error_nargs_insufficient
• raise_error_value_missing
• raise_error_switch_unknown
• raise_error_duplicated_clas
• sanitize_defaults
• errored
• check_count_consistency
• check_append_consistency
• check_envvar_consistency
• check_action_consistency
• check_def_nargs_consistency
• check_optional_consistency
• check_range_consistency
• check_range
• check_alternate_consistency
• check_switch_neg_consistency
• check_map_consistency
• check_map
• check_map_list
• get_map
• get_map_value
• check_path_consistency
• check_m_exclude_consistency
• check_named_consistency
• check_positional_consistency
• check_choices
• check_choices_text
• cast_number
• get_cla
• get_cla_from_buffer
• get_cla_list
• get_cla_list_from_buffer
• get_cla_list_character
• get_cla_list_varying_R16P
• get_cla_list_varying_R8P
• get_cla_list_varying_R4P
• get_cla_list_varying_I8P
• get_cla_list_varying_I4P
• get_cla_list_varying_I2P
• get_cla_list_varying_I1P
• get_cla_list_varying_logical
• get_cla_list_varying_char
• finalize
• read_real
• read_integer
• is_required_passed
• has_value
• config_key
• value_text
• deprecation_note
• has_range
• range_text
• has_path_checks
• takes_config_value
• match_token
• match_negation
• same_name
• is_pair_override
• names
• placeholder
• flag_value
• is_repeatable
• is_builtin
• is_list
• is_required_val_passed
• usage
• signature
• signature_usage
• completion_words
• completion_offer
• completion_fish
• completion_powershell
• completion_values
• has_choices
• check_list_size
• stored_list

Variables

Name	Type	Attributes	Description
SOURCE_COMMANDLINE	integer(kind=I4P)	parameter	Value passed on the command line.
SOURCE_ENVIRONMENT	integer(kind=I4P)	parameter	Value read from the environment variable.
SOURCE_CONFIG	integer(kind=I4P)	parameter	Value read from a configuration file.
SOURCE_DEFAULT	integer(kind=I4P)	parameter	Default value.
SOURCE_NONE	integer(kind=I4P)	parameter	No value.
ACTION_STORE	character(len=*)	parameter	Store value (if invoked a value must be passed).
ACTION_CONFIG	character(len=*)	parameter	Name the configuration file (stored as a store CLA).
ACTION_ALTERNATE	character(len=*)	parameter	Alternate action: bypass the value validation (F16).
ACTION_STORE_STAR	character(len=*)	parameter	Store value or revert on default if invoked alone.
ACTION_STORE_TRUE	character(len=*)	parameter	Store .true. without the necessity of a value.
ACTION_STORE_FALSE	character(len=*)	parameter	Store .false. without the necessity of a value.
ACTION_PRINT_HELP	character(len=*)	parameter	Print help message.
ACTION_PRINT_MARK	character(len=*)	parameter	Print help to Markdown file.
ACTION_PRINT_MAN	character(len=*)	parameter	Save the man page (F29).
ACTION_SHOW_COMPLETION	character(len=*)	parameter	Print the completion script (F24).
ACTION_INSTALL_COMPLETION	character(len=*)	parameter	Install the completion script (F24).
ACTION_PRINT_VERS	character(len=*)	parameter	Print version.
ACTION_COUNT	character(len=*)	parameter	Count the occurrences (repeatable, no value).
ACTION_APPEND	character(len=*)	parameter	Collect one value per occurrence (repeatable).
ARGS_SEP	character(len=*)	parameter	Arguments separator for multiple valued (list) CLA.
ERROR_OPTIONAL_NO_DEF	integer(kind=I4P)	parameter	Optional CLA without default value.
ERROR_REQUIRED_M_EXCLUDE	integer(kind=I4P)	parameter	Required CLA cannot exclude others.
ERROR_POSITIONAL_M_EXCLUDE	integer(kind=I4P)	parameter	Positional CLA cannot exclude others.
ERROR_NAMED_NO_NAME	integer(kind=I4P)	parameter	Named CLA without switch name.
ERROR_POSITIONAL_NO_POSITION	integer(kind=I4P)	parameter	Positional CLA without position.
ERROR_POSITIONAL_NO_STORE	integer(kind=I4P)	parameter	Positional CLA without action_store.
ERROR_NOT_IN_CHOICES	integer(kind=I4P)	parameter	CLA value out of a specified choices.
ERROR_MISSING_REQUIRED	integer(kind=I4P)	parameter	Missing required CLA.
ERROR_M_EXCLUDE	integer(kind=I4P)	parameter	Two mutually exclusive CLAs have been passed.
ERROR_CASTING_LOGICAL	integer(kind=I4P)	parameter	Error casting CLA value to logical type.
ERROR_CHOICES_LOGICAL	integer(kind=I4P)	parameter	Error adding choices check for CLA val of logical type.
ERROR_NO_LIST	integer(kind=I4P)	parameter	Actual CLA is not list-values.
ERROR_NARGS_INSUFFICIENT	integer(kind=I4P)	parameter	Multi-valued CLA with insufficient arguments.
ERROR_VALUE_MISSING	integer(kind=I4P)	parameter	Missing value of CLA.
ERROR_UNKNOWN	integer(kind=I4P)	parameter	Unknown CLA (switch name).
ERROR_ENVVAR_POSITIONAL	integer(kind=I4P)	parameter	Envvar not allowed for positional CLA.
ERROR_ENVVAR_NOT_STORE	integer(kind=I4P)	parameter	Envvar not allowed action different from store;
ERROR_ENVVAR_NARGS	integer(kind=I4P)	parameter	Envvar not allowed for list-values CLA.
ERROR_STORE_STAR_POSITIONAL	integer(kind=I4P)	parameter	Action store* not allowed for positional CLA.
ERROR_STORE_STAR_NARGS	integer(kind=I4P)	parameter	Action store* not allowed for list-values CLA.
ERROR_STORE_STAR_ENVVAR	integer(kind=I4P)	parameter	Action store* not allowed for environment variable CLA.
ERROR_ACTION_UNKNOWN	integer(kind=I4P)	parameter	Unknown CLA (switch name).
ERROR_DUPLICATED_CLAS	integer(kind=I4P)	parameter	Duplicated CLAs passed, passed multiple instance of the same CLA.
ERROR_MISSING_REQUIRED_VAL	integer(kind=I4P)	parameter	Missing required value of CLA.
ERROR_INLINE_VALUE_NOT_ALLOWED	integer(kind=I4P)	parameter	Inline value (NAME=VALUE) for a CLA that takes no value.
ERROR_INLINE_VALUE_NARGS	integer(kind=I4P)	parameter	Inline value (NAME=VALUE) for a list CLA.
ERROR_COUNT_INCONSISTENT	integer(kind=I4P)	parameter	Count CLA with positional, nargs, envvar or choices.
ERROR_APPEND_INCONSISTENT	integer(kind=I4P)	parameter	Append CLA with positional, nargs or envvar.
ERROR_APPEND_SCALAR_GET	integer(kind=I4P)	parameter	Scalar get of an append CLA (a list).
ERROR_POSITIONAL_NARGS	integer(kind=I4P)	parameter	Positional CLA with nargs (positionals are scalar).
ERROR_UNSUPPORTED_TYPE	integer(kind=I4P)	parameter	Value requested into a variable of an unsupported type.
ERROR_LIST_SIZE	integer(kind=I4P)	parameter	List requested into a fixed-size array of another size.
ERROR_DEF_NARGS	integer(kind=I4P)	parameter	List default whose count differs from an integer nargs.
ERROR_ENVVAR_CSV	integer(kind=I4P)	parameter	List value of an environment variable: unterminated quote.
ERROR_PATH_NOT_FOUND	integer(kind=I4P)	parameter	Path value that does not exist (must_exist, readable).
ERROR_PATH_NOT_READABLE	integer(kind=I4P)	parameter	Path value that cannot be opened for reading (readable).
ERROR_PATH_NOT_WRITABLE	integer(kind=I4P)	parameter	Existing path value that cannot be opened for writing.
ERROR_PATH_INCONSISTENT	integer(kind=I4P)	parameter	Path checks on an option taking no value.
ERROR_CASTING_NUMBER	integer(kind=I4P)	parameter	A value that is not a number, got into one (B40 of #126).
ERROR_DEPRECATED_REQUIRED	integer(kind=I4P)	parameter	A required option cannot be deprecated.
ERROR_ALTERNATE_INCONSISTENT	integer(kind=I4P)	parameter	An alternate action with an attribute of a value.
ERROR_SWITCH_NEG_INCONSISTENT	integer(kind=I4P)	parameter	A negation (switch_neg) of a CLA that is not a named flag.
ERROR_MAP_FORMAT	integer(kind=I4P)	parameter	A map item that is not KEY=VALUE (empty KEY included).
ERROR_MAP_DUPLICATE_KEY	integer(kind=I4P)	parameter	A map key given twice.
ERROR_MAP_UNKNOWN_KEY	integer(kind=I4P)	parameter	A map key outside map_keys.
ERROR_MAP_KEY_MISSING	integer(kind=I4P)	parameter	A map key not given, looked up without found.
ERROR_MAP_INCONSISTENT	integer(kind=I4P)	parameter	A map on a CLA that is not a named list, or not a map.
ERROR_RANGE_DEFINITION	integer(kind=I4P)	parameter	Invalid range (bounds, clamp to an open real bound).
ERROR_OUT_OF_RANGE	integer(kind=I4P)	parameter	Value out of its range.
ERROR_RANGE_TYPE	integer(kind=I4P)	parameter	Range with a character or logical get.

Derived Types

command_line_argument

Command Line Argument (CLA) class.

@note If not otherwise declared the action on CLA value is set to "store" a value.

Inheritance

Extends: object

Components

Name	Type	Attributes	Description
progname	character(len=:)	allocatable	Program name.
version	character(len=:)	allocatable	Program version.
help	character(len=:)	allocatable	Help message.
help_color	character(len=:)	allocatable	ANSI color of help messages.
help_style	character(len=:)	allocatable	ANSI style of help messages.
help_markdown	character(len=:)	allocatable	Longer help message, markdown formatted.
description	character(len=:)	allocatable	Detailed description.
license	character(len=:)	allocatable	License description.
authors	character(len=:)	allocatable	Authors list.
epilog	character(len=:)	allocatable	Epilogue message.
m_exclude	character(len=:)	allocatable	Mutually exclude other CLA(s group).
error_message	character(len=:)	allocatable	Meaningful error message to standard-error.
error_color	character(len=:)	allocatable	ANSI color of error messages.
error_style	character(len=:)	allocatable	ANSI style of error messages.
examples	type(flap_string)	allocatable	Examples of correct usage (examples(i)%s).
error	integer(kind=I4P)		Error trapping flag.
usage_lun	integer(kind=I4P)		Output unit to print help/usage messages
version_lun	integer(kind=I4P)		Output unit to print version message
error_lun	integer(kind=I4P)		Error unit to print error messages
case_insensitive	logical		Match switches and command names in any case (F14).
switch	character(len=:)	allocatable	Switch name.
switch_ab	character(len=:)	allocatable	Abbreviated switch name.
switch_neg	character(len=:)	allocatable	Negation of a flag, --no-x (F11); allocated if any.
act	character(len=:)	allocatable	CLA value action.
def	character(len=:)	allocatable	Default value.
nargs	character(len=:)	allocatable	Number of arguments consumed by CLA.
choices	character(len=:)	allocatable	List (comma separated) of allowable values for the argument.
val	character(len=:)	allocatable	CLA value.
envvar	character(len=:)	allocatable	Environment variable from which take value.
is_required	logical		Flag for set required argument.
is_positional	logical		Flag for checking if CLA is a positional or a named CLA.
position	integer(kind=I4P)		Position of positional CLA.
is_passed	logical		Flag for checking if CLA has been passed to CLI.
is_hidden	logical		Flag for hiding CLA, thus it does not compare into help.
is_val_required	logical		Flag for set required value for not required (optional) CLA.
source	integer(kind=I4P)		Source of the value (SOURCE_*).
is_config	logical		The CLA names the configuration file (act='config').
must_exist	logical		The value is a path that must exist.
readable	logical		The value is a path that must be readable (and exist).
writable	logical		The value is a path writable if it exists.
allow_dash	logical		'-' passes the path checks (standard input/output).
deprecated	character(len=:)	allocatable	Deprecation message; allocated means deprecated (F13).
range_min	character(len=:)	allocatable	Minimum of the value (F05), as given.
range_max	character(len=:)	allocatable	Maximum of the value (F05), as given.
min_open	logical		The minimum is excluded.
max_open	logical		The maximum is excluded.
clamp	logical		An out-of-range value becomes the bound.
case_sensitive	logical		Character choices match only in their case (F14).
is_map	logical		The values are KEY=VALUE pairs (F18).
is_auto_envvar	logical		The envvar is generated by auto_envvar_prefix (F07).
metavar	character(len=:)	allocatable	Placeholder of the value in the help (F12).
map_keys	character(len=:)	allocatable	Allowed keys of a map, comma separated (F18).
is_negated	logical		The last spelling of a flag pair passed is the negation.
pair_passed	logical		Both spellings of a flag pair passed (D5: once each).

Type-Bound Procedures

Name	Attributes	Description
error_prefix	pass(self)	Prefix of error messages.
free_object	pass(self)	Free dynamic memory.
print_version	pass(self)	Print version.
print_error_message	pass(self)	Print meaningful error message.
inherit_error	pass(self)	Take the error of another object, with its message.
clear_error	pass(self)	Forget the error and its message.
set_examples	pass(self)	Set examples of correct usage.
assign_object	pass(lhs )	Assignment overloading.
free		Free dynamic memory.
check		Check data consistency.
is_required_passed		Check if required CLA is passed.
has_value		Check if the value is given by the user (explicit source).
set_source_value		Set a value read from the environment or a configuration file.
config_key		Key of the CLA in a configuration file.
takes_config_value		Check if the CLA takes a value from a configuration file.
value_text		Resolved value as text (provenance report).
has_path_checks		Check if the value is a path to check.
deprecation_note		Marker of a deprecated CLA in the help.
has_range		Check if the value has a range.
range_text		Range as text, e.g. (0, 1].
check_paths		Check the path value(s): existence and permissions.
match_token		Check if a command line token names this CLA.
match_negation		Check if a command line token is the negation of this flag.
same_name		Compare a switch name with a token (case rule of F14).
is_pair_override		Check if a flag passed may be passed again by its other spelling.
flag_value		Value of a flag passed on the command line.
names		Visible switch names, for suggestions.
placeholder		Placeholder of the value in the help (metavar).
check_map		Check the KEY=VALUE pairs of a map.
get_map		Get the keys and values of a map.
get_map_value		Get the value of a key of a map.
match_inline_token		Check a token also as NAME=VALUE.
set_inline_value		Set the value given inline (NAME=VALUE).
is_repeatable		Check if the CLA may be passed more than once.
count_occurrences		Count occurrences of a count CLA.
append_value		Collect a value of an append CLA.
is_list		Check if the CLA holds a list (nargs or append).
is_builtin		Check if the CLA is a builtin (help, version, man, ...).
raise_error_m_exclude		Raise error mutually exclusive CLAs passed.
raise_error_nargs_insufficient		Raise error insufficient number of argument values passed.
raise_error_value_missing		Raise error missing value.
raise_error_switch_unknown		Raise error switch_unknown.
raise_error_duplicated_clas		Raise error duplicated CLAs passed.
get		Get CLA value(s).
get_varying		Get CLA value(s) from varying size list.
has_choices		Return true if CLA has defined choices.
sanitize_defaults		Sanitize default values.
signature		Get signature.
signature_usage		Get the signature for the usage text.
completion_words		Get the bash completion words (switches).
completion_offer		Get the bash lines offering the words not yet typed.
completion_values		Get the bash completion of the value.
completion_fish		Get the fish completion lines.
completion_powershell		Get the PowerShell completion entries.
usage		Get correct usage.
errored		Trig error occurence and print meaningful message.
check_count_consistency		Check data consistency for count CLA.
check_append_consistency		Check data consistency for append CLA.
check_envvar_consistency		Check data consistency for envvar CLA.
check_action_consistency		Check CLA action consistency.
check_optional_consistency		Check optional CLA consistency.
check_def_nargs_consistency		Check the count of a list default against nargs.
check_m_exclude_consistency		Check mutually exclusion consistency.
check_path_consistency		Check that the path checks are on an option taking a value.
check_alternate_consistency		Check that an alternate action has no attribute of a value.
check_switch_neg_consistency		Check that a negation belongs to a named scalar flag.
check_map_consistency		Check that a map is a named list, its default included.
check_map_list		Check the KEY=VALUE pairs of a stored list.
check_range_consistency		Check the range definition.
check_range		Check (or clamp) a value against the range.
check_named_consistency		Check named CLA consistency.
check_positional_consistency		Check positional CLA consistency.
check_choices		Check if CLA value is in allowed choices.
check_choices_text		Check the choices of a whole character value, then store it.
cast_number		Convert a value to a number, quietly (B40 of #126).
check_list_size		Check CLA multiple values list size consistency.
stored_list		Stored list of values (parsed or default).
get_cla		Get CLA (single) value.
get_cla_from_buffer		Get CLA (single) value from a buffer.
get_cla_list		Get CLA multiple values.
get_cla_list_from_buffer		Get CLA (single) value from a buffer.
get_cla_list_varying_R16P		Get CLA multiple values, varying size, R16P.
get_cla_list_varying_R8P		Get CLA multiple values, varying size, R8P.
get_cla_list_varying_R4P		Get CLA multiple values, varying size, R4P.
get_cla_list_varying_I8P		Get CLA multiple values, varying size, I8P.
get_cla_list_varying_I4P		Get CLA multiple values, varying size, I4P.
get_cla_list_varying_I2P		Get CLA multiple values, varying size, I2P.
get_cla_list_varying_I1P		Get CLA multiple values, varying size, I1P.
get_cla_list_varying_logical		Get CLA multiple values, varying size, bool.
get_cla_list_varying_char		Get CLA multiple values, varying size, char.

Subroutines

free

Free dynamic memory.

Attributes: elemental

subroutine free(self)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.

Call graph

check

Check data consistency.

subroutine check(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

Call graph

set_source_value

Set a value read from the environment variable (F07 of #125) or from a configuration file (F08), with its source.

A flag (store_true/store_false) takes it as its value: 1/0, true/false, t/f, yes/no, y/n, on/off, in any case (click's set); anything else is kept, so that get reports ERROR_CASTING_LOGICAL. A list (nargs) reads an environment variable as one CSV record (F22: an unterminated quote is ERROR_ENVVAR_CSV), a configuration value as blank separated values (as def).

subroutine set_source_value(self, value, source)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
value	character(len=*)	in		Value.
source	integer(kind=I4P)	in		SOURCE_ENVIRONMENT or SOURCE_CONFIG.

Call graph

check_paths

Check the path value(s), whatever their source (F09 of #125): every item of a list; an empty value, and '-' with allow_dash, are not checked. Standard Fortran only: inquire for existence, an open for reading (readable) or for appending, writing nothing (writable, only if the file exists); the message carries the reason of the processor. Directories are not told apart: a directory exists and opens for reading.

subroutine check_paths(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

Call graph

match_inline_token

Check if a command line token names this CLA by rule 1 (match_token) or rule 2 of decision D1: NAME=VALUE, split at the first '=', with NAME matching by rule 1 (inline values, F01).

Attributes: pure

subroutine match_inline_token(self, token, match, inline_val, has_inline)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.
token	character(len=*)	in		Command line token.
match	logical	out		Check result.
inline_val	character(len=:)	out	allocatable	VALUE of NAME=VALUE ('' otherwise).
has_inline	logical	out		The token is NAME=VALUE.

Call graph

append_value

Collect one value of an append CLA; the first occurrence replaces the default (D9 of #125). An empty value is an empty item (D17, reversed in step 2.11).

subroutine append_value(self, value, first, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
value	character(len=*)	in		Value.
first	logical	in		First occurrence on the command line.
pref	character(len=*)	in	optional	Prefixing string.

Call graph

count_occurrences

Add n occurrences to a count CLA; the first occurrence starts from 0 (the default applies only when not passed).

subroutine count_occurrences(self, n, first)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
n	integer(kind=I4P)	in		Occurrences to add.
first	logical	in		First occurrence on the command line.

Call graph

set_inline_value

Set the value given inline (NAME=VALUE, F01): only a scalar store takes one; the next argument is not consumed.

An empty value (NAME=) is the empty string, as a separate empty value (D17 of #125, reversed in step 2.11).

subroutine set_inline_value(self, value, pref, first)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
value	character(len=*)	in		Inline value.
pref	character(len=*)	in	optional	Prefixing string.
first	logical	in	optional	First occurrence on the command line (append, default .true.).

Call graph

raise_error_m_exclude

Raise error mutually exclusive CLAs passed.

subroutine raise_error_m_exclude(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

Call graph

raise_error_nargs_insufficient

Raise error insufficient number of argument values passed.

subroutine raise_error_nargs_insufficient(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

Call graph

raise_error_value_missing

Raise error missing value.

subroutine raise_error_value_missing(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

Call graph

raise_error_switch_unknown

Raise error switch_unknown.

subroutine raise_error_switch_unknown(self, switch, pref, hint, quiet)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
switch	character(len=*)	in	optional	CLA switch name.
pref	character(len=*)	in	optional	Prefixing string.
hint	character(len=*)	in	optional	"Did you mean" hint, appended to the message (F10).
quiet	logical	in	optional	Build the message without printing it (an ignored argument).

Call graph

raise_error_duplicated_clas

Raise error duplicated CLAs passed.

subroutine raise_error_duplicated_clas(self, switch, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
switch	character(len=*)	in	optional	CLA switch name.
pref	character(len=*)	in	optional	Prefixing string.

Call graph

sanitize_defaults

Sanitize defaults values.

It is necessary to sanitize the default values of non-passed, optional CLA.

subroutine sanitize_defaults(self)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLAsG data.

Call graph

errored

Trig error occurence and print meaningful message.

subroutine errored(self, error, pref, switch, val_str, log_value, hint, type_name, quiet)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
error	integer(kind=I4P)	in		Error occurred.
pref	character(len=*)	in	optional	Prefixing string.
switch	character(len=*)	in	optional	CLA switch name.
val_str	character(len=*)	in	optional	Value string.
log_value	character(len=*)	in	optional	Logical value to be casted.
hint	character(len=*)	in	optional	Hint appended to the message (unknown switch, F10).
type_name	character(len=*)	in	optional	Type a value cannot be converted to ('an integer', 'a real').
quiet	logical	in	optional	Build the message without printing it (default .false.).

Call graph

check_count_consistency

Check count CLA consistency: a named flag without nargs, envvar or choices (F02 of #125).

subroutine check_count_consistency(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

Call graph

check_append_consistency

Check append CLA consistency: a named option collecting one value per occurrence, without nargs or envvar (F02).

subroutine check_append_consistency(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

Call graph

check_envvar_consistency

Check data consistency for envvar CLA.

subroutine check_envvar_consistency(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

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check_action_consistency

Check CLA action consistency.

subroutine check_action_consistency(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

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check_def_nargs_consistency

Check that a list default has as many values as an integer nargs (B28 of #125); '+' and '*' take any count.

subroutine check_def_nargs_consistency(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

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check_optional_consistency

Check optional CLA consistency.

subroutine check_optional_consistency(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

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check_range_consistency

Check the range (F05 of #125): an option taking a value (store, store*, append, count), numeric bounds, min <= max (min < max when a bound is open).

subroutine check_range_consistency(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

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check_range

Check a value against the range (F05 of #125), in its kind: out of range is ERROR_OUT_OF_RANGE, or, with clamp, the value becomes the bound (an open integer bound: bound +/- 1; a real cannot clamp to an open bound, ERROR_RANGE_DEFINITION). A character or logical get is ERROR_RANGE_TYPE.

subroutine check_range(self, val, text, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
val	class(*)	inout		Value.
text	character(len=*)	in		Value as given, for the messages.
pref	character(len=*)	in	optional	Prefixing string.

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check_alternate_consistency

Check that an alternate action (F16 of #125) is a plain flag: no nargs, envvar, positional, choices, required, exclude.

subroutine check_alternate_consistency(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

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check_switch_neg_consistency

Check that a negation (switch_neg, F11 of #125) belongs to a named scalar flag and differs from its own names.

subroutine check_switch_neg_consistency(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

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check_map_consistency

Check a map (F18 of #125): a named store list (nargs) or append, without choices, not the configuration file; map_keys only on a map. The default pairs are checked as passed ones.

subroutine check_map_consistency(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

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check_map

Check the KEY=VALUE pairs of a map, whatever their source (F18 of #125): called by parse after the values are settled.

subroutine check_map(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

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check_map_list

Check the items of a stored list as KEY=VALUE pairs: format (a non-empty KEY before the first '='), repeated keys, and the map_keys whitelist (with a "Did you mean" hint).

subroutine check_map_list(self, list, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
list	character(len=*)	in		Stored list.
pref	character(len=*)	in	optional	Prefixing string.

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get_map

Get the keys and values of a map (F18 of #125), in the order given; ERROR_MAP_INCONSISTENT if the CLA is not a map.

subroutine get_map(self, keys, values, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
keys	character(len=*)	out	allocatable	Keys.
values	character(len=*)	out	allocatable	Values.
pref	character(len=*)	in	optional	Prefixing string.

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get_map_value

Get the value of a key of a map, converted to the type of val (F18 of #125). A missing key leaves val untouched: found=.false., or ERROR_MAP_KEY_MISSING without found. A conversion error keeps its code and names the key.

subroutine get_map_value(self, key, val, found, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
key	character(len=*)	in		Key.
val	class(*)	inout		Value.
found	logical	out	optional	The key is in the map.
pref	character(len=*)	in	optional	Prefixing string.

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check_path_consistency

Check that the path checks (must_exist, readable, writable, allow_dash) are on an option taking a value: store, store* or append (F09 of #125).

subroutine check_path_consistency(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

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check_m_exclude_consistency

Check mutually exclusion consistency.

subroutine check_m_exclude_consistency(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

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check_named_consistency

Check named CLA consistency.

subroutine check_named_consistency(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

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check_positional_consistency

Check positional CLA consistency.

subroutine check_positional_consistency(self, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

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check_choices

Check if CLA value is in allowed choices.

@note This procedure can be called if and only if cla%choices has been allocated.

subroutine check_choices(self, val, pref, text)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
val	class(*)	inout		CLA value; a character one becomes the declared spelling.
pref	character(len=*)	in	optional	Prefixing string.
text	character(len=*)	in	optional	The value as given, for the message (not the number re-written).

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check_choices_text

Check the choices of a character value on the whole value, then store it into the caller's variable (B38 of #126).

A variable shorter than the value holds it truncated (fex in a character(2) is fe, a choice): the check must come first. With case_sensitive=.false. the variable receives the declared spelling of the choice.

subroutine check_choices_text(self, text, val, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
text	character(len=*)	in		Whole value.
val	character(len=*)	inout		Caller's variable.
pref	character(len=*)	in	optional	Prefixing string.

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cast_number

Convert a value to the number type of val, quietly: a failure is ERROR_CASTING_NUMBER, reported by FLAP (B40 of #126).

PENF's cton writes its own message on standard error (not on the error unit of the CLI) and returns the I/O status as the error: values are never converted with it.

subroutine cast_number(self, text, val, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
text	character(len=*)	in		Value.
val	class(*)	inout		Number.
pref	character(len=*)	in	optional	Prefixing string.

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get_cla

Get CLA (single) value.

subroutine get_cla(self, val, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
val	class(*)	inout		CLA value.
pref	character(len=*)	in	optional	Prefixing string.

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get_cla_from_buffer

Get CLA (single) value from parsed value.

subroutine get_cla_from_buffer(self, buffer, val, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
buffer	character(len=*)	in		Buffer containing values (parsed or default CLA value).
val	class(*)	inout		CLA value.
pref	character(len=*)	in	optional	Prefixing string.

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get_cla_list

Get CLA multiple values.

subroutine get_cla_list(self, pref, val)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.
val	class(*)	inout		CLA values.

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get_cla_list_from_buffer

Get CLA multiple values from a buffer.

subroutine get_cla_list_from_buffer(self, buffer, val, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
buffer	character(len=*)	in		Buffer containing values (parsed or default CLA value).
val	class(*)	inout		CLA value.
pref	character(len=*)	in	optional	Prefixing string.

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get_cla_list_character

Get CLA multiple values into a character array, checking the choices of each value.

subroutine get_cla_list_character(self, val, vals, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
val	character(len=*)	inout		CLA values.
vals	character(len=*)	in		Values to store.
pref	character(len=*)	in	optional	Prefixing string.

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get_cla_list_varying_R16P

Get CLA (multiple) value with varying size, real(R16P).

subroutine get_cla_list_varying_R16P(self, val, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
val	real(kind=R16P)	out	allocatable	CLA values.
pref	character(len=*)	in	optional	Prefixing string.

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get_cla_list_varying_R8P

Get CLA (multiple) value with varying size, real(R8P).

subroutine get_cla_list_varying_R8P(self, val, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
val	real(kind=R8P)	out	allocatable	CLA values.
pref	character(len=*)	in	optional	Prefixing string.

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get_cla_list_varying_R4P

Get CLA (multiple) value with varying size, real(R4P).

subroutine get_cla_list_varying_R4P(self, val, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
val	real(kind=R4P)	out	allocatable	CLA values.
pref	character(len=*)	in	optional	Prefixing string.

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get_cla_list_varying_I8P

Get CLA (multiple) value with varying size, integer(I8P).

subroutine get_cla_list_varying_I8P(self, val, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
val	integer(kind=I8P)	out	allocatable	CLA values.
pref	character(len=*)	in	optional	Prefixing string.

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get_cla_list_varying_I4P

Get CLA (multiple) value with varying size, integer(I4P).

subroutine get_cla_list_varying_I4P(self, val, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
val	integer(kind=I4P)	out	allocatable	CLA values.
pref	character(len=*)	in	optional	Prefixing string.

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get_cla_list_varying_I2P

Get CLA (multiple) value with varying size, integer(I2P).

subroutine get_cla_list_varying_I2P(self, val, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
val	integer(kind=I2P)	out	allocatable	CLA values.
pref	character(len=*)	in	optional	Prefixing string.

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get_cla_list_varying_I1P

Get CLA (multiple) value with varying size, integer(I1P).

subroutine get_cla_list_varying_I1P(self, val, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
val	integer(kind=I1P)	out	allocatable	CLA values.
pref	character(len=*)	in	optional	Prefixing string.

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get_cla_list_varying_logical

Get CLA (multiple) value with varying size, logical.

subroutine get_cla_list_varying_logical(self, val, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
val	logical	out	allocatable	CLA values.
pref	character(len=*)	in	optional	Prefixing string.

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get_cla_list_varying_char

Get CLA (multiple) value with varying size, character.

subroutine get_cla_list_varying_char(self, val, pref)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
val	character(len=*)	out	allocatable	CLA values.
pref	character(len=*)	in	optional	Prefixing string.

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finalize

Free dynamic memory when finalizing.

Attributes: elemental

subroutine finalize(self)

Arguments

Name	Type	Intent	Attributes	Description
self	type(command_line_argument)	inout		CLA data.

read_real

Read a real from a string, quietly (cton prints an error message).

subroutine read_real(string, x, ok)

Arguments

Name	Type	Intent	Attributes	Description
string	character(len=*)	in		String.
x	real(kind=R8P)	out		Value.
ok	logical	out		The string is a number.

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read_integer

Read an integer from a string, quietly.

subroutine read_integer(string, i, ok)

Arguments

Name	Type	Intent	Attributes	Description
string	character(len=*)	in		String.
i	integer(kind=I8P)	out		Value.
ok	logical	out		The string is an integer.

Functions

is_required_passed

Check if required CLA is passed: a required CLA, or one without default, needs a value from an explicit source (D2).

Returns: logical

function is_required_passed(self, pref) result(is_ok)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

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has_value

Check if the value is given by the user, from an explicit source (command line, environment, config): not the default.

The getters read val when this is true and def otherwise; is_passed keeps its meaning, "seen on the command line".

Attributes: elemental

Returns: logical

function has_value(self)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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config_key

Return the key of the CLA in a configuration file: its switch without the leading dashes ('' for a positional).

Attributes: pure

Returns: character(len=:)

function config_key(self) result(key)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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value_text

Return the resolved value as text, for the provenance report: a list blank separated, a flag passed on the command line as .true./.false., otherwise the value from its source (or the default).

Returns: character(len=:)

function value_text(self) result(text)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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deprecation_note

Return the marker of a deprecated CLA in the help: ' (DEPRECATED: message)', ' (DEPRECATED)', or '' (F13 of #125).

Attributes: pure

Returns: character(len=:)

function deprecation_note(self) result(note)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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has_range

Check if the value has a range (min or max).

Attributes: elemental

Returns: logical

function has_range(self) result(ranged)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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range_text

Return the range as text: (0, 1], [1, +inf), ...

Attributes: pure

Returns: character(len=:)

function range_text(self) result(text)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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has_path_checks

Check if the value is a path to check (must_exist, readable or writable).

Attributes: elemental

Returns: logical

function has_path_checks(self) result(checks)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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takes_config_value

Check if the CLA takes a value from a configuration file: a named store (lists included), store_true or store_false.

Attributes: pure

Returns: logical

function takes_config_value(self) result(takes)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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match_token

Check if a command line token names this CLA: the one matcher of switch names (decision D1 of #125).

Rule 1: the token is the switch, its abbreviation or its negation (F11); blanks around both are not significant. A positional never matches. Rule 2 (NAME=VALUE) is match_inline_token, built on this one; match_negation tells which. With case_insensitive (F14, inherited from the CLI) the names match in any case.

Attributes: pure

Returns: logical

function match_token(self, token) result(match)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.
token	character(len=*)	in		Command line token.

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match_negation

Check if a command line token is the negation of this flag (switch_neg, F11 of #125), by rule 1 of match_token.

Attributes: pure

Returns: logical

function match_negation(self, token) result(match)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.
token	character(len=*)	in		Command line token.

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same_name

Compare a switch name with a token, blanks around them not significant; in any case with case_insensitive (F14).

Attributes: pure

Returns: logical

function same_name(self, name, token) result(same)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.
name	character(len=*)	in		Switch name.
token	character(len=*)	in		Command line token.

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is_pair_override

Check if a flag already passed may be passed again: the other spelling of a flag pair, not yet passed (D5 of #125).

Attributes: pure

Returns: logical

function is_pair_override(self, negated) result(override)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.
negated	logical	in		The token is the negation.

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names

Return the switch names of a visible named CLA (switch, abbreviation, negation), for the suggestions of F10.

Attributes: pure

Returns: type(flap_string)

function names(self) result(list)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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placeholder

Return the placeholder of the value in the usage and help (F12 of #125): the metavar if given (not blank), otherwise 'KEY=VALUE' for a map and 'value' for any other CLA.

Attributes: pure

Returns: character(len=:)

function placeholder(self) result(ph)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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flag_value

Return the value of a flag passed on the command line: .true. for store_true (.false. for store_false), the opposite when the last spelling passed is the negation (F11 of #125).

Attributes: pure

Returns: logical

function flag_value(self) result(val)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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is_repeatable

Check if the CLA may be passed more than once (count).

Attributes: pure

Returns: logical

function is_repeatable(self) result(repeatable)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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is_builtin

Check if the CLA is a builtin added by FLAP: --help, --version, --markdown, --man and the completion options (the hidden -- is recognised by its switch). Builtins are neither reported by provenance nor copied by copy_options.

Attributes: pure

Returns: logical

function is_builtin(self) result(builtin)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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is_list

Check if the CLA holds a list: nargs, or the append action.

Attributes: pure

Returns: logical

function is_list(self) result(list)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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is_required_val_passed

Check if required value of CLA is passed.

Returns: logical

function is_required_val_passed(self, pref) result(is_ok)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
pref	character(len=*)	in	optional	Prefixing string.

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usage

Get correct usage.

Returns: character(len=:)

function usage(self, pref, markdown)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLAs group data.
pref	character(len=*)	in	optional	Prefixing string.
markdown	logical	in	optional	Format for markdown

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signature

Get signature: dispatch to the renderer of the requested output.

Usage text: signature_usage; bash completion: completion_words (plain) or completion_values.

Returns: character(len=:)

function signature(self, bash_completion, plain)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.
bash_completion	logical	in	optional	Return the signature for bash completion.
plain	logical	in	optional	Return the signature as plain switches list.

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signature_usage

Get the signature for the usage text (human readable): the only place for rendering changes such as metavars.

A bare signature has no optional brackets, as a member of a mutually exclusive set, where the set is bracketed.

Returns: character(len=:)

function signature_usage(self, bare) result(signature)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.
bare	logical	in	optional	Render without optional brackets.

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completion_words

Get the bash completion words of a named CLA: its switches, blank separated (none for positional or hidden CLAs).

Returns: character(len=:)

function completion_words(self) result(words)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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completion_offer

Get the bash lines adding the completion words of a named CLA to words (B37 of #125): unless repeatable (append, count), a spelling already typed (used: the words of its group so far, --x or --x=value) is not offered again; the switch and its abbreviation are one spelling, a negation is another (D5). None for positional or hidden CLAs.

Returns: character(len=:)

function completion_offer(self) result(lines)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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completion_fish

Get the fish completion lines of a named CLA (F15 of #125): each starts with a new line and head (complete -c prog and its condition). Long switches are -l, one-letter ones -s, multi-letter single-dash ones old-style -o; choices are offered exclusively (-x -a), a free value completes file names (-r -F), a flag takes none; a negation has its own line. None for positional or hidden CLAs.

Returns: character(len=:)

function completion_fish(self, head) result(lines)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.
head	character(len=*)	in		Beginning of each line.

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completion_powershell

Get the PowerShell completion entries of a named CLA (F15 of #125), one per switch name, each on its own line: @{ n = name; d = help; c = choices or $null; v = takes a value }. A negation takes no value. None for positional or hidden CLAs.

Returns: character(len=:)

function completion_powershell(self) result(entries)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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completion_values

Get the bash completion of the value following a named CLA: a prev test offering its choices, or nothing for a value.

Returns: character(len=:)

function completion_values(self) result(values)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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has_choices

Return true if CLA has choices.

Attributes: pure

Returns: logical

function has_choices(self)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

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check_list_size

Check CLA multiple values list size consistency: a list without values (or with a single blank one) is empty.

Returns: logical

function check_list_size(self, vals, pref) result(is_ok)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	inout		CLA data.
vals	character(len=*)	in		Stored values.
pref	character(len=*)	in	optional	Prefixing string.

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stored_list

Return the stored list of values: the resolved one if given by the user (has_value), the default one otherwise.

Returns: character(len=:)

function stored_list(self) result(list)

Arguments

Name	Type	Intent	Attributes	Description
self	class(command_line_argument)	in		CLA data.

Call graph