nDiki : uric

uric - URI character(s)

RFC2396 2 で定義されている、URI で使える文字。

なお URI に関する最新の RFC3986 では uric の規則はなくなっている。

スポンサードリンク

RFC2396

syntax

 uric = reserved | unreserved | escaped
 reserved = ";" | "/" | "?" | ":" | "@" | "&" | "=" | "+" |
            "$" | ","
 unreserved = alphanum | mark
 alphanum = alpha | digit
 alpha = lowalpha | upalpha
 lowalpha = "a" | "b" | "c" | "d" | "e" | "f" | "g" | "h" | "i" |
            "j" | "k" | "l" | "m" | "n" | "o" | "p" | "q" | "r" |
            "s" | "t" | "u" | "v" | "w" | "x" | "y" | "z"
 upalpha =  "A" | "B" | "C" | "D" | "E" | "F" | "G" | "H" | "I" |
            "J" | "K" | "L" | "M" | "N" | "O" | "P" | "Q" | "R" |
            "S" | "T" | "U" | "V" | "W" | "X" | "Y" | "Z"
 digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" |
         "8" | "9"
 mark = "-" | "_" | "." | "!" | "~" | "*" | "'" | "(" | ")"
 escaped     = "%" hex hex
 hex         = digit | "A" | "B" | "C" | "D" | "E" | "F" |
               "a" | "b" | "c" | "d" | "e" | "f"

Perl 正規表現だと

 ([!$\x26-\x3b=\x3f-\x5a_\x61-\x7a~]|%[0-9a-zA-Z]{2})

(http://www.naney.org/)

) は uric に含まれるので URLを () で括ると最後の)もURLと誤認される可能性あり。

URI で使えない文字

RFC2396 2.4.3 Excluded US-ASCII Characters で示されている。

 control = <US-ASCII coded characters 00-1F and 7F hexadecimal>
 space   = <US-ASCII coded character 20 hexadecimal>
 delims  = "<" | ">" | "#" | "%" | <">
 unwise  = "{" | "}" | "|" | "\" | "^" | "[" | "]" | "`"

octet [RFC2396]

Hex	Char	uric?		pchar?
00	NUL \0	x	control
01	SOH	x	control
02	STX	x	control
03	ETX	x	control
04	EOT	x	control
05	ENQ	x	control
06	ACK	x	control
07	BEL \a	x	control
08	BS \b	x	control
09	HT \t	x	control
0A	LF \n	x	control
0B	VT \v	x	control
0C	FF \f	x	control
0D	CR \r	x	control
0E	SO	x	control
0F	SI	x	control
10	DLE	x	control
11	DC1	x	control
12	DC2	x	control
13	DC3	x	control
14	DC4	x	control
15	NAK	x	control
16	SYN	x	control
17	ETB	x	control
18	CAN	x	control
19	EM	x	control
1A	SUB	x	control
1B	ESC	x	control
1C	FS	x	control
1D	GS	x	control
1E	RS	x	control
1F	US	x	control
20	SPACE	x	space
21	!	o	mark	o
22	"	x	delims
23	#	x	delims
24	$	o	reserved	o
25	%	x	delims
26	&	o	reserved	o
27	'	o	mark	o
28	(	o	mark	o
29	)	o	mark	o
2A	*	o	mark	o
2B	+	o	reserved	o
2C	,	o	reserved	o
2D	-	o	mark	o
2E	.	o	mark	o
2F	/	o	reserved(g)
30	0	o	digit	o
31	1	o	digit	o
32	2	o	digit	o
33	3	o	digit	o
34	4	o	digit	o
35	5	o	digit	o
36	6	o	digit	o
37	7	o	digit	o
38	8	o	digit	o
39	9	o	digit	o
3A	:	o	reserved	o
3B	;	o	reserved
3C	<	x	delims
3D	=	o	reserved	o※1
3E	>	x	delims
3F	?	o	reserved(g)
40	@	o	reserved	o
41	A	o	upalpha	o
42	B	o	upalpha	o
43	C	o	upalpha	o
44	D	o	upalpha	o
45	E	o	upalpha	o
46	F	o	upalpha	o
47	G	o	upalpha	o
48	H	o	upalpha	o
49	I	o	upalpha	o
4A	J	o	upalpha	o
4B	K	o	upalpha	o
4C	L	o	upalpha	o
4D	M	o	upalpha	o
4E	N	o	upalpha	o
4F	O	o	upalpha	o
50	P	o	upalpha	o
51	Q	o	upalpha	o
52	R	o	upalpha	o
53	S	o	upalpha	o
54	T	o	upalpha	o
55	U	o	upalpha	o
56	V	o	upalpha	o
57	W	o	upalpha	o
58	X	o	upalpha	o
59	Y	o	upalpha	o
5A	Z	o	upalpha	o
5B	[	x	unwise
5C	\	x	unwise
5D	]	x	unwise
5E	^	x	unwise
5F	_	o	mark	o
60	`	x	unwise
61	a	o	lowalpha	o
62	b	o	lowalpha	o
63	c	o	lowalpha	o
64	d	o	lowalpha	o
65	e	o	lowalpha	o
66	f	o	lowalpha	o
67	g	o	lowalpha	o
68	h	o	lowalpha	o
69	i	o	lowalpha	o
6A	j	o	lowalpha	o
6B	k	o	lowalpha	o
6C	l	o	lowalpha	o
6D	m	o	lowalpha	o
6E	n	o	lowalpha	o
6F	o	o	lowalpha	o
70	p	o	lowalpha	o
71	q	o	lowalpha	o
72	r	o	lowalpha	o
73	s	o	lowalpha	o
74	t	o	lowalpha	o
75	u	o	lowalpha	o
76	v	o	lowalpha	o
77	w	o	lowalpha	o
78	x	o	lowalpha	o
79	y	o	lowalpha	o
7A	z	o	lowalpha	o
7B	{	x	unwise
7C	\|	x	unwise
7D	}	x	unwise
7E	~	o	mark	o
7F	DEL	x	control