Configuration files parsing. More...

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include <libgen.h>
#include <libconfig.h>
#include "config.h"
#include "debug.h"
#include "utils.h"

Include dependency graph for config.c:

Macros
#define	JANUS_CONFIG_INDENT 4

Functions
janus_config *	janus_config_parse (const char *config_file)
	Method to parse an INI configuration file.

janus_config *	janus_config_create (const char *name)
	Method to create a new, empty, configuration.

janus_config_item *	janus_config_item_create (const char name, const char value)
	Method to create a new janus_config_item instance from name and value.

janus_config_category *	janus_config_category_create (const char *name)
	Method to create a new janus_config_category instance.

janus_config_array *	janus_config_array_create (const char *name)
	Method to create a new janus_config_array instance.

void	janus_config_container_destroy (janus_config_container *container)
	Helper method to quickly destroy an item, category or array.

janus_config_container *	janus_config_get (janus_config config, janus_config_container parent, janus_config_type type, const char *name)
	Helper method to quickly get an item, category, or array.

janus_config_container *	janus_config_get_create (janus_config config, janus_config_container parent, janus_config_type type, const char *name)
	Same as janus_config_get, but creates the element if it doesn't exist.

janus_config_container *	janus_config_search (janus_config *config,...)
	Helper method to quickly lookup an item, category, or array.

int	janus_config_add (janus_config config, janus_config_container container, janus_config_container *item)
	Add an item/category/array instance to a category or array.

int	janus_config_remove (janus_config config, janus_config_container container, const char *name)
	Remove an existing item with the specific name from a category/array.

GList *	janus_config_get_items (janus_config config, janus_config_container parent)
	Helper method to return the list of plain items, either in root or from a parent.

GList *	janus_config_get_categories (janus_config config, janus_config_container parent)
	Helper method to return the list of categories, either in root or from a parent.

GList *	janus_config_get_arrays (janus_config config, janus_config_container parent)
	Helper method to return the list of arrays, either in root or from a parent.

void	janus_config_print (janus_config *config)
	Helper method to print a configuration on the standard output.

void	janus_config_print_as (janus_config *config, int level)
	Helper method to print a configuration on the standard output using a different logging level than LOG_VERB.

gboolean	janus_config_save (janus_config config, const char folder, const char *filename)
	Helper method to save a configuration to a file.

void	janus_config_destroy (janus_config *config)
	Destroy a configuration container instance.

Detailed Description

Configuration files parsing.

Author: Lorenzo Miniero loren.nosp@m.zo@m.nosp@m.eetec.nosp@m.ho.c.nosp@m.om

Copyright: GNU General Public License v3

Implementation of a parser of INI and libconfig configuration files.

Core

Macro Definition Documentation

◆ JANUS_CONFIG_INDENT

#define JANUS_CONFIG_INDENT 4

Function Documentation

◆ janus_config_add()

int janus_config_add	(	janus_config *	config,
		janus_config_container *	parent,
		janus_config_container *	item )

Add an item/category/array instance to a category or array.

Note: If adding to a category and the item/category/array already exists, it is replaced; it is appended if the target is an array instead, where duplicates are accepted.

Parameters

[in]	config	The configuration instance
[in]	parent	The category or array to add the item to, if any
[in]	item	The item/category/array to add

Returns: 0 if successful, a negative integer otherwise

◆ janus_config_array_create()

janus_config_array * janus_config_array_create ( const char * name )

Method to create a new janus_config_array instance.

Parameters

[in] name Name to give to the array

Returns: A valid janus_config_array instance if successful, NULL otherwise

◆ janus_config_category_create()

janus_config_category * janus_config_category_create ( const char * name )

Method to create a new janus_config_category instance.

Parameters

[in] name Name to give to the category

Returns: A pointer to a valid janus_config_category instance if successful, NULL otherwise

◆ janus_config_container_destroy()

void janus_config_container_destroy ( janus_config_container * container )

Helper method to quickly destroy an item, category or array.

Note: This method also destroys anything it contains, if it's a category or array, but will not unlink the object from its parent: this is up to the caller

Parameters

[in] container The item/category/array to destroy

◆ janus_config_create()

janus_config * janus_config_create ( const char * name )

Method to create a new, empty, configuration.

Parameters

[in] name Name to give to the configuration

Returns: A pointer to a valid janus_config instance if successful, NULL otherwise

◆ janus_config_destroy()

void janus_config_destroy ( janus_config * config )

Destroy a configuration container instance.

Parameters

[in] config The configuration to destroy

◆ janus_config_get()

janus_config_container * janus_config_get	(	janus_config *	config,
		janus_config_container *	parent,
		janus_config_type	type,
		const char *	name )

Helper method to quickly get an item, category, or array.

Note: If the parent container is NULL, the lookup is done at the root. If something is found but type doesn't match (name is an array but we're looking for a category), NULL is returned.

Parameters

[in]	config	The configuration instance
[in]	parent	The parent container (category or array), if any
[in]	type	The type of container to look for
[in]	name	The name of the item/category/array to look for

Returns: A pointer to a valid janus_config_container instance if successful, NULL otherwise

◆ janus_config_get_arrays()

GList * janus_config_get_arrays	(	janus_config *	config,
		janus_config_container *	parent )

Helper method to return the list of arrays, either in root or from a parent.

Note: The method returns a new GList: it's up to the caller to free it. The values of the list data must NOT be freed, though, as it's just linked from the configuration.

Parameters

[in]	config	The configuration instance
[in]	parent	The parent container (category or array), if any

Returns: A pointer to the categories GLib linked list of arrays if successful, NULL otherwise

◆ janus_config_get_categories()

GList * janus_config_get_categories	(	janus_config *	config,
		janus_config_container *	parent )

Helper method to return the list of categories, either in root or from a parent.

Note: The method returns a new GList: it's up to the caller to free it. The values of the list data must NOT be freed, though, as it's just linked from the configuration.

Parameters

[in]	config	The configuration instance
[in]	parent	The parent container (category or array), if any

Returns: A pointer to the categories GLib linked list of categories if successful, NULL otherwise

◆ janus_config_get_create()

janus_config_container * janus_config_get_create	(	janus_config *	config,
		janus_config_container *	parent,
		janus_config_type	type,
		const char *	name )

Same as janus_config_get, but creates the element if it doesn't exist.

Note: Nothing is created if type is janus_config_type_any.

Parameters

[in]	config	The configuration instance
[in]	parent	The parent container (category or array), if any
[in]	type	The type of container to look for
[in]	name	The name of the item/category/array to look for

Returns: A pointer to a valid janus_config_container instance if successful, NULL otherwise

◆ janus_config_get_items()

GList * janus_config_get_items	(	janus_config *	config,
		janus_config_container *	parent )

Helper method to return the list of plain items, either in root or from a parent.

Note: The method returns a new GList: it's up to the caller to free it. The values of the list data must NOT be freed, though, as it's just linked from the configuration.

Parameters

[in]	config	The configuration instance
[in]	parent	The parent container (category or array), if any

Returns: A pointer to the categories GLib linked list of items if successful, NULL otherwise

◆ janus_config_item_create()

janus_config_item * janus_config_item_create	(	const char *	name,
		const char *	value )

Method to create a new janus_config_item instance from name and value.

Parameters

[in]	name	Name to give to the item
[in]	value	Value of the item (optional)

Returns: A valid janus_config_item instance if successful, NULL otherwise

◆ janus_config_parse()

janus_config * janus_config_parse ( const char * config_file )

Method to parse an INI configuration file.

Parameters

[in] config_file Path to the configuration file

Returns: A pointer to a valid janus_config instance if successful, NULL otherwise

◆ janus_config_print()

void janus_config_print ( janus_config * config )

Helper method to print a configuration on the standard output.

Note: This prints with LOG_VERB: if you need the configuration to be visible at a different debugging level, use janus_config_print_as instead

Parameters

[in] config The configuration to print

◆ janus_config_print_as()

void janus_config_print_as	(	janus_config *	config,
		int	level )

Helper method to print a configuration on the standard output using a different logging level than LOG_VERB.

Parameters

[in]	config	The configuration to print
[in]	level	The debugging level to use

◆ janus_config_remove()

int janus_config_remove	(	janus_config *	config,
		janus_config_container *	parent,
		const char *	name )

Remove an existing item with the specific name from a category/array.

Parameters

[in]	config	The configuration instance
[in]	parent	The category/array to remove the item from, if any
[in]	name	The name of the item/category/array to remove

Returns: 0 if successful, a negative integer otherwise

◆ janus_config_save()

gboolean janus_config_save	(	janus_config *	config,
		const char *	folder,
		const char *	filename )

Helper method to save a configuration to a file.

Parameters

[in]	config	The configuration to save
[in]	folder	The folder the file should be saved to
[in]	filename	The file name, extension included (should be .jcfg, or .cfg for legacy INI files)

Returns: 0 if successful, a negative integer otherwise

◆ janus_config_search()

janus_config_container * janus_config_search	(	janus_config *	config,
			... )

Helper method to quickly lookup an item, category, or array.

Note: If something is found but type doesn't match (name is an array but we're looking for a category), NULL is returned.

Parameters

[in] config The configuration instance

Returns: A pointer to a valid janus_config_container instance if successful, NULL otherwise

Macros

Functions

Detailed Description

Macro Definition Documentation

◆ JANUS_CONFIG_INDENT

Function Documentation

◆ janus_config_add()

◆ janus_config_array_create()

◆ janus_config_category_create()

◆ janus_config_container_destroy()

◆ janus_config_create()

◆ janus_config_destroy()

◆ janus_config_get()

◆ janus_config_get_arrays()

◆ janus_config_get_categories()

◆ janus_config_get_create()

◆ janus_config_get_items()

◆ janus_config_item_create()

◆ janus_config_parse()

◆ janus_config_print()

◆ janus_config_print_as()

◆ janus_config_remove()

◆ janus_config_save()

◆ janus_config_search()