## Quark lists Quark lists — Manages lists of KEY=VALUE pairs |

## Synopsis

                        GdaQuarkList;
    GdaQuarkList *      gda_quark_list_new                  (void);
    GdaQuarkList *      gda_quark_list_new_from_string      (const gchar *string);
    GdaQuarkList *      gda_quark_list_copy                 (GdaQuarkList *qlist);
    void                gda_quark_list_free                 (GdaQuarkList *qlist);
    void                gda_quark_list_clear                (GdaQuarkList *qlist);
    void                gda_quark_list_add_from_string      (GdaQuarkList *qlist,
                                                             const gchar *string,
                                                             gboolean cleanup);
    const gchar *       gda_quark_list_find                 (GdaQuarkList *qlist,
                                                             const gchar *name);
    void                gda_quark_list_remove               (GdaQuarkList *qlist,
                                                             const gchar *name);
    void                gda_quark_list_foreach              (GdaQuarkList *qlist,
                                                             GHFunc func,
                                                             gpointer user_data);

## Description

This object is used mainly by database provider's implementation to parse connection strings into lists of KEY=VALUE pairs.

## Details

### GdaQuarkList

    typedef struct _GdaQuarkList GdaQuarkList;

### gda_quark_list_new ()

    GdaQuarkList *      gda_quark_list_new                  (void);

Creates a new GdaQuarkList, which is a set of key->value pairs, very similar to GLib's GHashTable, but with the only purpose to make easier the parsing and creation of data source connection strings.

Returns : | the newly created GdaQuarkList.

### gda_quark_list_new_from_string ()

    GdaQuarkList *      gda_quark_list_new_from_string      (const gchar *string);

Creates a new GdaQuarkList given a string.

`string` must be a semi-colon separated list of "<key>=<value>" strings (for example "DB_NAME=notes;USERNAME=alfred"). Each key and value must respect the RFC 1738 recommendations: the `<>"#%{}|\^~[]'`;/?:@=&` and space characters are replaced by `"%`ab`"` where `ab` is the hexadecimal number corresponding to the character (for example the "DB_NAME=notes;USERNAME=al%`20fred`" string will specify a username as "al fred"). If this formalism is not respected, then some unexpected results may occur.

`string` : | a string.
Returns : | the newly created GdaQuarkList.

### gda_quark_list_copy ()

    GdaQuarkList *      gda_quark_list_copy                 (GdaQuarkList *qlist);

Creates a new GdaQuarkList from an existing one.

`qlist` : | quark_list to get a copy from.
Returns : | a newly allocated GdaQuarkList with a copy of the data in `qlist`.

### gda_quark_list_free ()

    void                gda_quark_list_free                 (GdaQuarkList *qlist);

Releases all memory occupied by the given GdaQuarkList.

`qlist` : | a GdaQuarkList.

### gda_quark_list_clear ()

    void                gda_quark_list_clear                (GdaQuarkList *qlist);

Removes all strings in the given GdaQuarkList.

`qlist` : | a GdaQuarkList.

### gda_quark_list_add_from_string ()

    void                gda_quark_list_add_from_string      (GdaQuarkList *qlist,
                                                             const gchar *string,
                                                             gboolean cleanup);

`string` must be a semi-colon separated list of "<key>=<value>" strings (for example "DB_NAME=notes;USERNAME=alfred"). Each key and value must respect the RFC 1738 recommendations: the `<>"#%{}|\^~[]'`;/?:@=&` and space characters are replaced by `"%`ab`"` where `ab` is the hexadecimal number corresponding to the character (for example the "DB_NAME=notes;USERNAME=al%`20fred`" string will specify a username as "al fred"). If this formalism is not respected, then some unexpected results may occur.

Adds new key->value pairs from the given `string`. If `cleanup` is set to `TRUE`, the previous contents will be discarded before adding the new pairs.

`qlist` : | a GdaQuarkList.
`string` : | a string.
`cleanup` : | whether to cleanup the previous content or not.

### gda_quark_list_find ()

    const gchar *       gda_quark_list_find                 (GdaQuarkList *qlist,
                                                             const gchar *name);

Searches for the value identified by `name` in the given GdaQuarkList.

`qlist` : | a GdaQuarkList.
`name` : | the name of the value to search for.
Returns : | the value associated with the given key if found, or `NULL` if not found.

### gda_quark_list_remove ()

    void                gda_quark_list_remove               (GdaQuarkList *qlist,
                                                             const gchar *name);

Removes an entry from the GdaQuarkList, given its name.

`qlist` : | a GdaQuarkList structure.
`name` : | an entry name.

### gda_quark_list_foreach ()

    void                gda_quark_list_foreach              (GdaQuarkList *qlist,
                                                             GHFunc func,
                                                             gpointer user_data);

Calls the given function for each of the key/value pairs in `qlist`. The function is passed the key and value of each pair, and the given user_data parameter. `qlist` may not be modified while iterating over it.

`qlist` : | a GdaQuarkList structure.
`func` : | the function to call for each key/value pair
`user_data` : | user data to pass to the function