1 76193d7c 2003-09-30 devnull typedef struct Addr Addr;
 2 76193d7c 2003-09-30 devnull typedef struct Cmd Cmd;
 3 76193d7c 2003-09-30 devnull struct Addr
 4 76193d7c 2003-09-30 devnull {
 5 76193d7c 2003-09-30 devnull 	char	type;	/* # (char addr), l (line addr), / ? . $ + - , ; */
 6 76193d7c 2003-09-30 devnull 	union{
 7 76193d7c 2003-09-30 devnull 		String	*re;
 8 76193d7c 2003-09-30 devnull 		Addr	*aleft;		/* left side of , and ; */
 9 76193d7c 2003-09-30 devnull 	} g;
10 76193d7c 2003-09-30 devnull 	Posn	num;
11 76193d7c 2003-09-30 devnull 	Addr	*next;			/* or right side of , and ; */
12 76193d7c 2003-09-30 devnull };
13 76193d7c 2003-09-30 devnull 
14 76193d7c 2003-09-30 devnull #define	are	g.re
15 76193d7c 2003-09-30 devnull #define	left	g.aleft
16 76193d7c 2003-09-30 devnull 
17 76193d7c 2003-09-30 devnull struct Cmd
18 76193d7c 2003-09-30 devnull {
19 76193d7c 2003-09-30 devnull 	Addr	*addr;			/* address (range of text) */
20 76193d7c 2003-09-30 devnull 	String	*re;			/* regular expression for e.g. 'x' */
21 76193d7c 2003-09-30 devnull 	union{
22 76193d7c 2003-09-30 devnull 		Cmd	*cmd;		/* target of x, g, {, etc. */
23 76193d7c 2003-09-30 devnull 		String	*text;		/* text of a, c, i; rhs of s */
24 76193d7c 2003-09-30 devnull 		Addr	*addr;		/* address for m, t */
25 76193d7c 2003-09-30 devnull 	} g;
26 76193d7c 2003-09-30 devnull 	Cmd	*next;			/* pointer to next element in {} */
27 76193d7c 2003-09-30 devnull 	short	num;
28 76193d7c 2003-09-30 devnull 	ushort	flag;			/* whatever */
29 76193d7c 2003-09-30 devnull 	ushort	cmdc;			/* command character; 'x' etc. */
30 76193d7c 2003-09-30 devnull };
31 76193d7c 2003-09-30 devnull 
32 76193d7c 2003-09-30 devnull #define	ccmd	g.cmd
33 76193d7c 2003-09-30 devnull #define	ctext	g.text
34 76193d7c 2003-09-30 devnull #define	caddr	g.addr
35 76193d7c 2003-09-30 devnull 
36 7f6458b0 2021-01-06 rsc typedef struct Cmdtab Cmdtab;
37 7f6458b0 2021-01-06 rsc struct Cmdtab {
38 76193d7c 2003-09-30 devnull 	ushort	cmdc;		/* command character */
39 76193d7c 2003-09-30 devnull 	uchar	text;		/* takes a textual argument? */
40 76193d7c 2003-09-30 devnull 	uchar	regexp;		/* takes a regular expression? */
41 76193d7c 2003-09-30 devnull 	uchar	addr;		/* takes an address (m or t)? */
42 76193d7c 2003-09-30 devnull 	uchar	defcmd;		/* default command; 0==>none */
43 76193d7c 2003-09-30 devnull 	uchar	defaddr;	/* default address */
44 76193d7c 2003-09-30 devnull 	uchar	count;		/* takes a count e.g. s2/// */
45 76193d7c 2003-09-30 devnull 	char	*token;		/* takes text terminated by one of these */
46 76193d7c 2003-09-30 devnull 	int	(*fn)(File*, Cmd*);	/* function to call with parse tree */
47 7f6458b0 2021-01-06 rsc };
48 7f6458b0 2021-01-06 rsc extern Cmdtab cmdtab[];
49 76193d7c 2003-09-30 devnull 
50 76193d7c 2003-09-30 devnull enum Defaddr{	/* default addresses */
51 76193d7c 2003-09-30 devnull 	aNo,
52 76193d7c 2003-09-30 devnull 	aDot,
53 cbeb0b26 2006-04-01 devnull 	aAll
54 76193d7c 2003-09-30 devnull };
55 76193d7c 2003-09-30 devnull 
56 76193d7c 2003-09-30 devnull int	nl_cmd(File*, Cmd*), a_cmd(File*, Cmd*), b_cmd(File*, Cmd*);
57 76193d7c 2003-09-30 devnull int	c_cmd(File*, Cmd*), cd_cmd(File*, Cmd*), d_cmd(File*, Cmd*);
58 76193d7c 2003-09-30 devnull int	D_cmd(File*, Cmd*), e_cmd(File*, Cmd*);
59 76193d7c 2003-09-30 devnull int	f_cmd(File*, Cmd*), g_cmd(File*, Cmd*), i_cmd(File*, Cmd*);
60 76193d7c 2003-09-30 devnull int	k_cmd(File*, Cmd*), m_cmd(File*, Cmd*), n_cmd(File*, Cmd*);
61 76193d7c 2003-09-30 devnull int	p_cmd(File*, Cmd*), q_cmd(File*, Cmd*);
62 76193d7c 2003-09-30 devnull int	s_cmd(File*, Cmd*), u_cmd(File*, Cmd*), w_cmd(File*, Cmd*);
63 76193d7c 2003-09-30 devnull int	x_cmd(File*, Cmd*), X_cmd(File*, Cmd*), plan9_cmd(File*, Cmd*);
64 76193d7c 2003-09-30 devnull int	eq_cmd(File*, Cmd*);
65 76193d7c 2003-09-30 devnull 
66 76193d7c 2003-09-30 devnull 
67 76193d7c 2003-09-30 devnull String	*getregexp(int);
68 76193d7c 2003-09-30 devnull Addr	*newaddr(void);
69 76193d7c 2003-09-30 devnull Address	address(Addr*, Address, int);
70 76193d7c 2003-09-30 devnull int	cmdexec(File*, Cmd*);