URI Functions

URI Functions — URI Functions

Synopsis


#include <glib.h>


#define             G_URI_RESERVED_CHARS_ALLOWED_IN_PATH
#define             G_URI_RESERVED_CHARS_ALLOWED_IN_PATH_ELEMENT
#define             G_URI_RESERVED_CHARS_ALLOWED_IN_USERINFO
#define             G_URI_RESERVED_CHARS_GENERIC_DELIMITERS
#define             G_URI_RESERVED_CHARS_SUBCOMPONENT_DELIMITERS
char*               g_uri_parse_scheme                  (const char *uri);
char*               g_uri_escape_string                 (const char *unescaped,
                                                         const char *reserved_chars_allowed,
                                                         gboolean allow_utf8);
char*               g_uri_unescape_string               (const char *escaped_string,
                                                         const char *illegal_characters);
char*               g_uri_unescape_segment              (const char *escaped_string,
                                                         const char *escaped_string_end,
                                                         const char *illegal_characters);

Description

Functions for manipulating Universal Resource Identifiers (URIs) as defined by RFC 3986. It is highly recommended that you have read and understand RFC 3986 for understanding this API. A copy of RFC 3986 can be found at http://www.ietf.org/rfc/rfc3986.txt.

Details

G_URI_RESERVED_CHARS_ALLOWED_IN_PATH

#define G_URI_RESERVED_CHARS_ALLOWED_IN_PATH G_URI_RESERVED_CHARS_ALLOWED_IN_PATH_ELEMENT "/"

Allowed characters in a path. Includes "!$&'()*+,;=:@/".

G_URI_RESERVED_CHARS_ALLOWED_IN_PATH_ELEMENT

#define G_URI_RESERVED_CHARS_ALLOWED_IN_PATH_ELEMENT G_URI_RESERVED_CHARS_SUBCOMPONENT_DELIMITERS ":@"

Allowed characters in path elements. Includes "!$&'()*+,;=:@".

G_URI_RESERVED_CHARS_ALLOWED_IN_USERINFO

#define G_URI_RESERVED_CHARS_ALLOWED_IN_USERINFO G_URI_RESERVED_CHARS_SUBCOMPONENT_DELIMITERS ":"

Allowed characters in userinfo as defined in RFC 3986. Includes "!$&'()*+,;=:".

G_URI_RESERVED_CHARS_GENERIC_DELIMITERS

#define G_URI_RESERVED_CHARS_GENERIC_DELIMITERS ":/?#[]@"

Generic delimiters characters as defined in RFC 3986. Includes ":/?#[]@".

G_URI_RESERVED_CHARS_SUBCOMPONENT_DELIMITERS

#define G_URI_RESERVED_CHARS_SUBCOMPONENT_DELIMITERS "!$&'()*+,;="

Subcomponent delimiter characters as defined in RFC 3986. Includes "!$&'()*+,;=".

g_uri_parse_scheme ()

char*               g_uri_parse_scheme                  (const char *uri);

Gets the scheme portion of a URI string. RFC 3986 decodes the scheme as: 

URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]

Common schemes include "file", "http", "svn+ssh", etc.

uri :

 a valid URI.

Returns :

 The "Scheme" component of the URI, or NULL on error. The returned string should be freed when no longer needed.

Since 2.16

g_uri_escape_string ()

char*               g_uri_escape_string                 (const char *unescaped,
                                                         const char *reserved_chars_allowed,
                                                         gboolean allow_utf8);

Escapes a string for use in a URI.

Normally all characters that are not "unreserved" (i.e. ASCII alphanumerical characters plus dash, dot, underscore and tilde) are escaped. But if you specify characters in reserved_chars_allowed they are not escaped. This is useful for the "reserved" characters in the URI specification, since those are allowed unescaped in some portions of a URI.

unescaped :

 the unescaped input string.

reserved_chars_allowed :

 a string of reserved characters that are allowed to be used.

allow_utf8 :

 TRUE if the result can include UTF-8 characters.

Returns :

 an escaped version of unescaped. The returned string should be freed when no longer needed.

Since 2.16

g_uri_unescape_string ()

char*               g_uri_unescape_string               (const char *escaped_string,
                                                         const char *illegal_characters);

Unescapes a whole escaped string.

If any of the characters in illegal_characters or the character zero appears as an escaped character in escaped_string then that is an error and NULL will be returned. This is useful it you want to avoid for instance having a slash being expanded in an escaped path element, which might confuse pathname handling.

escaped_string :

 an escaped string to be unescaped.

illegal_characters :

 an optional string of illegal characters not to be allowed.

Returns :

 an unescaped version of escaped_string. The returned string should be freed when no longer needed.

Since 2.16

g_uri_unescape_segment ()

char*               g_uri_unescape_segment              (const char *escaped_string,
                                                         const char *escaped_string_end,
                                                         const char *illegal_characters);

Unescapes a segment of an escaped string.

If any of the characters in illegal_characters or the character zero appears as an escaped character in escaped_string then that is an error and NULL will be returned. This is useful it you want to avoid for instance having a slash being expanded in an escaped path element, which might confuse pathname handling.

escaped_string :

 a string.

escaped_string_end :

 a string.

illegal_characters :

 an optional string of illegal characters not to be allowed.

Returns :

 an unescaped version of escaped_string or NULL on error. The returned string should be freed when no longer needed.

Since 2.16