std.uri

Encode and decode Uniform Resource Identifiers (URIs). URIs are used in internet transfer protocols. Valid URI characters consist of letters, digits, and the characters ;/?:@&=+$,-.!~*'() Reserved URI characters are ;/?:@&=+$, Escape sequences consist of % followed by two hex digits.

See Also:

RFC 3986
Wikipedia

License:

Boost License 1.0.

Authors:

Walter Bright

Source

std/uri.d

class URIException: object.Exception;

This Exception is thrown if something goes wrong when encoding or decoding a URI.

Examples:

import std.exception : assertThrown;
assertThrown!URIException("%ab".decode);

string decode(Char)(scope const(Char)[] encodedURI)
Constraints: if (isSomeChar!Char);

Decodes the URI string encodedURI into a UTF-8 string and returns it. Escape sequences that resolve to reserved URI characters are not replaced. Escape sequences that resolve to the '#' character are not replaced.

Examples:

writeln("foo%20bar".decode); // "foo bar"
writeln("%3C%3E.@.%E2%84%A2".decode); // "<>.@.™"
writeln("foo&/".decode); // "foo&/"
writeln("!@#&dollar;&*(".decode); // "!@#&dollar;&*("

string decodeComponent(Char)(scope const(Char)[] encodedURIComponent)
Constraints: if (isSomeChar!Char);

Decodes the URI string encodedURI into a UTF-8 string and returns it. All escape sequences are decoded.

Examples:

writeln("foo%2F%26".decodeComponent); // "foo/&"
writeln("dl%C3%A4ng%20r%C3%B6cks".decodeComponent); // "dläng röcks"
writeln("!%40%23%24%25%5E%26*(".decodeComponent); // "!@#$%^&*("

string encode(Char)(scope const(Char)[] uri)
Constraints: if (isSomeChar!Char);

Encodes the UTF-8 string uri into a URI and returns that URI. Any character not a valid URI character is escaped. The '#' character is not escaped.

Examples:

writeln("foo bar".encode); // "foo%20bar"
writeln("<>.@.™".encode); // "%3C%3E.@.%E2%84%A2"
writeln("foo/#?a=1&b=2".encode); // "foo/#?a=1&b=2"
writeln("dlang+rocks!".encode); // "dlang+rocks!"
writeln("!@#&dollar;%^&*(".encode); // "!@#&dollar;%25%5E&*("

string encodeComponent(Char)(scope const(Char)[] uriComponent)
Constraints: if (isSomeChar!Char);

Encodes the UTF-8 string uriComponent into a URI and returns that URI. Any character not a letter, digit, or one of -.!~*'() is escaped.

Examples:

writeln("!@#$%^&*(".encodeComponent); // "!%40%23%24%25%5E%26*("
writeln("<>.@.™".encodeComponent); // "%3C%3E.%40.%E2%84%A2"
writeln("foo/&".encodeComponent); // "foo%2F%26"
writeln("dläng röcks".encodeComponent); // "dl%C3%A4ng%20r%C3%B6cks"
writeln("dlang+rocks!".encodeComponent); // "dlang%2Brocks!"

ptrdiff_t uriLength(Char)(scope const(Char)[] s)
Constraints: if (isSomeChar!Char);

Does string s[] start with a URL?

Returns:

-1 it does not len it does, and s[0 .. len] is the slice of s[] that is that URL

Examples:

string s1 = "http://www.digitalmars.com/~fred/fredsRX.html#foo end!";
writeln(uriLength(s1)); // 49
string s2 = "no uri here";
writeln(uriLength(s2)); // -1
assert(uriLength("issue 14924") < 0);

ptrdiff_t emailLength(Char)(scope const(Char)[] s)
Constraints: if (isSomeChar!Char);

Does string s[] start with an email address?

Returns:

-1 it does not len it does, and s[0 .. i] is the slice of s[] that is that email address

References

RFC2822

Examples:

string s1 = "[email protected] with garbage added";
writeln(emailLength(s1)); // 32
string s2 = "no email address here";
writeln(emailLength(s2)); // -1
assert(emailLength("issue 14924") < 0);