ANSI escape code

前一段时间在处理telnet的一些控制字符，遇到了比较纠结的事情。

自己通过socket发送命令到交换机上，获取相关字符，瞎猜，还是宣告失败，后面维基百科了一下。果然全部搞定。。。

现，献上ANSI escape code的相关解码。

 

Some ANSI escape sequences (not a complete list)

Code	Name	Effect
CSI n A	CUU – Cursor Up	Moves the cursor n (default 1) cells in the given direction. If the cursor is already at the edge of the screen, this has no effect.
CSI n B	CUD – Cursor Down
CSI n C	CUF – Cursor Forward
CSI n D	CUB – Cursor Back
CSI n E	CNL – Cursor Next Line	Moves cursor to beginning of the line n (default 1) lines down.
CSI n F	CPL – Cursor Previous Line	Moves cursor to beginning of the line n (default 1) lines up.
CSI n G	CHA – Cursor Horizontal Absolute	Moves the cursor to column n.
CSI n ; m H	CUP – Cursor Position	Moves the cursor to row n, column m. The values are 1-based, and default to 1 (top left corner) if omitted. A sequence such as CSI ;5H is a synonym for CSI 1;5H as well as CSI 17;H is the same as CSI 17H and CSI 17;1H
CSI n J	ED – Erase Data	Clears part of the screen. If n is zero (or missing), clear from cursor to end of screen. If n is one, clear from cursor to beginning of the screen. If n is two, clear entire screen (and moves cursor to upper left on MS-DOS ANSI.SYS).
CSI n K	EL – Erase in Line	Erases part of the line. If n is zero (or missing), clear from cursor to the end of the line. If n is one, clear from cursor to beginning of the line. If n is two, clear entire line. Cursor position does not change.
CSI n S	SU – Scroll Up	Scroll whole page up by n (default 1) lines. New lines are added at the bottom. (not ANSI.SYS)
CSI n T	SD – Scroll Down	Scroll whole page down by n (default 1) lines. New lines are added at the top. (not ANSI.SYS)
CSI n ; m f	HVP – Horizontal and Vertical Position	Moves the cursor to row n, column m. Both default to 1 if omitted. Same as CUP
CSI n [;k] m	SGR – Select Graphic Rendition	Sets SGR parameters, including text color. After CSI can be zero or more parameters separated with ;. With no parameters, CSI m is treated as CSI 0 m (reset / normal), which is typical of most of the ANSI escape sequences.
CSI 6 n	DSR – Device Status Report	Reports the cursor position to the application as (as though typed at the keyboard) ESC[n;mR, where n is the row and m is the column. (May not work on MS-DOS.)
CSI s	SCP – Save Cursor Position	Saves the cursor position.
CSI u	RCP – Restore Cursor Position	Restores the cursor position.
CSI ?25l	DECTCEM	Hides the cursor. (Note: the trailing character is lowercase L.)
CSI ?25h	DECTCEM	Shows the cursor.

SGR (Select Graphic Rendition) parameters

Code	Effect	Note
0	Reset / Normal	all attributes off
1	Bright (increased intensity) or Bold
2	Faint (decreased intensity)	not widely supported
3	Italic: on	not widely supported. Sometimes treated as inverse.
4	Underline: Single
5	Blink: Slow	less than 150 per minute
6	Blink: Rapid	MS-DOS ANSI.SYS; 150 per minute or more; not widely supported
7	Image: Negative	inverse or reverse; swap foreground and background
8	Conceal	not widely supported
9	Crossed-out	Characters legible, but marked for deletion. Not widely supported.
10	Primary(default) font
11–19	n-th alternate font	Select the n-th alternate font. 14 being the fourth alternate font, up to 19 being the 9th alternate font.
20	Fraktur	hardly ever supported
21	Bright/Bold: off or Underline: Double	bold off not widely supported, double underline hardly ever
22	Normal color or intensity	neither bright, bold nor faint
23	Not italic, not Fraktur
24	Underline: None	not singly or doubly underlined
25	Blink: off
26	Reserved
27	Image: Positive
28	Reveal	conceal off
29	Not crossed out
30–37	Set text color	30 + x, where x is from the color table below
38	Set xterm-256 text color[dubious – discuss]	next arguments are 5;x where x is color index (0..255)
39	Default text color	implementation defined (according to standard)
40–47	Set background color	40 + x, where x is from the color table below
48	Set xterm-256 background color	next arguments are 5;x where x is color index (0..255)
49	Default background color	implementation defined (according to standard)
50	Reserved
51	Framed
52	Encircled
53	Overlined
54	Not framed or encircled
55	Not overlined
56–59	Reserved
60	ideogram underline or right side line	hardly ever supported
61	ideogram double underline or double line on the right side	hardly ever supported
62	ideogram overline or left side line	hardly ever supported
63	ideogram double overline or double line on the left side	hardly ever supported
64	ideogram stress marking	hardly ever supported
90–99	Set foreground color, high intensity	aixterm (not in standard)
100–109	Set background color, high intensity	aixterm (not in standard)

 http://en.wikipedia.org/wiki/ANSI_escape_code