1 #include <u.h>
2 #include <libc.h>
3 #include <ctype.h>
4 #include <draw.h>
5 #include <thread.h>
6 #include <mouse.h>
7 #include <cursor.h>
8 #include <keyboard.h>
9 #include <frame.h>
10 #include <plumb.h>
11 #include <termios.h>
12 #include <sys/termios.h>
13 #ifdef __linux__
14 #include <pty.h>
15 #endif
16 
17 #define fatal	sysfatal
18 
19 typedef struct Text	Text;
20 typedef struct Readbuf	Readbuf;
21 
22 enum
23 {
24 	/* these are chosen to use malloc()'s properties well */
25 	HiWater	= 640000,	/* max size of history */
26 	LoWater	= 330000,	/* min size of history after max'ed */
27 };
28 
29 /* various geometric paramters */
30 enum
31 {
32 	Scrollwid 	= 12,		/* width of scroll bar */
33 	Scrollgap 	= 4,		/* gap right of scroll bar */
34 	Maxtab		= 4,
35 };
36 
37 enum
38 {
39 	Cut,
40 	Paste,
41 	Snarf,
42 	Send,
43 	Scroll,
44 	Plumb,
45 };
46 
47 
48 #define	SCROLLKEY	Kdown
49 #define	ESC		0x1B
50 #define CUT		0x18	/* ctrl-x */		
51 #define COPY		0x03	/* crtl-c */
52 #define PASTE		0x16	/* crtl-v */
53 #define BACKSCROLLKEY	Kup
54 
55 #define	READBUFSIZE 8192
56 
57 struct Text
58 {
59 	Frame		*f;		/* frame ofr terminal */
60 	Mouse		m;
61 	uint		nr;		/* num of runes in term */
62 	Rune		*r;		/* runes for term */
63 	uint		nraw;		/* num of runes in raw buffer */
64 	Rune		*raw;		/* raw buffer */
65 	uint		org;		/* first rune on the screen */
66 	uint		q0;		/* start of selection region */
67 	uint		q1;		/* end of selection region */
68 	uint		qh;		/* unix point */
69 	int		npart;		/* partial runes read from console */
70 	char		part[UTFmax];	
71 	int		nsnarf;		/* snarf buffer */
72 	Rune		*snarf;
73 };
74 
75 struct Readbuf
76 {
77 	short	n;				/* # bytes in buf */
78 	uchar	data[READBUFSIZE];		/* data bytes */
79 };
80 
81 void	mouse(void);
82 void	domenu2(int);
83 void	loop(void);
84 void	geom(void);
85 void	fill(void);
86 void	tcheck(void);
87 void	updatesel(void);
88 void	doreshape(void);
89 void	rcstart(int fd[2], int, char**);
90 void	runewrite(Rune*, int);
91 void	consread(void);
92 void	conswrite(char*, int);
93 int	bswidth(Rune c);
94 void	cut(void);
95 void	paste(Rune*, int, int);
96 void	snarfupdate(void);
97 void	snarf(void);
98 void	show(uint);
99 void	key(Rune);
100 void	setorigin(uint org, int exact);
101 uint	line2q(uint);
102 uint	backnl(uint, uint);
103 int	cansee(uint);
104 uint	backnl(uint, uint);
105 void	addraw(Rune*, int);
106 void	mselect(void);
107 void	doubleclick(uint *q0, uint *q1);
108 int	clickmatch(int cl, int cr, int dir, uint *q);
109 Rune	*strrune(Rune *s, Rune c);
110 int	consready(void);
111 Rectangle scrpos(Rectangle r, ulong p0, ulong p1, ulong tot);
112 void	scrdraw(void);
113 void	scroll(int);
114 void	hostproc(void *arg);
115 void	hoststart(void);
116 int	getchildwd(int, char*, int);
117 void	plumbstart(void);
118 void	plumb(uint, uint);
119 void	plumbclick(uint*, uint*);
120 int	getpts(int fd[], char *slave);
121 
122 #define	runemalloc(n)		malloc((n)*sizeof(Rune))
123 #define	runerealloc(a, n)	realloc(a, (n)*sizeof(Rune))
124 #define	runemove(a, b, n)	memmove(a, b, (n)*sizeof(Rune))