2 * Copyright (c) 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1993, 1994, 1995, 1996
5 * Keith Bostic. All rights reserved.
7 * See the LICENSE file for redistribution information.
13 static const char sccsid
[] = "@(#)ex_util.c 10.23 (Berkeley) 6/19/96";
16 #include <sys/types.h>
17 #include <sys/queue.h>
20 #include <bitstring.h>
28 #include "../common/common.h"
32 * Create an EX command structure.
34 * PUBLIC: void ex_cinit __P((EXCMD *,
35 * PUBLIC: int, int, recno_t, recno_t, int, ARGS **));
38 ex_cinit(cmdp
, cmd_id
, naddr
, lno1
, lno2
, force
, ap
)
40 int cmd_id
, force
, naddr
;
44 memset(cmdp
, 0, sizeof(EXCMD
));
45 cmdp
->cmd
= &cmds
[cmd_id
];
46 cmdp
->addrcnt
= naddr
;
47 cmdp
->addr1
.lno
= lno1
;
48 cmdp
->addr2
.lno
= lno2
;
49 cmdp
->addr1
.cno
= cmdp
->addr2
.cno
= 1;
51 cmdp
->iflags
|= E_C_FORCE
;
53 if ((cmdp
->argv
= ap
) != NULL
)
59 * Add an argument to an EX command structure.
61 * PUBLIC: void ex_cadd __P((EXCMD *, ARGS *, char *, size_t));
64 ex_cadd(cmdp
, ap
, arg
, len
)
70 cmdp
->argv
[cmdp
->argc
] = ap
;
73 cmdp
->argv
[++cmdp
->argc
] = NULL
;
78 * Return a line from the file.
80 * PUBLIC: int ex_getline __P((SCR *, FILE *, size_t *));
83 ex_getline(sp
, fp
, lenp
)
94 for (errno
= 0, off
= 0, p
= exp
->ibp
;;) {
95 if (off
>= exp
->ibp_len
) {
96 BINC_RET(sp
, exp
->ibp
, exp
->ibp_len
, off
+ 1);
99 if ((ch
= getc(fp
)) == EOF
&& !feof(fp
)) {
100 if (errno
== EINTR
) {
107 if (ch
== EOF
|| ch
== '\n') {
108 if (ch
== EOF
&& !off
)
121 * Check for more files to edit.
123 * PUBLIC: int ex_ncheck __P((SCR *, int));
134 * Historic practice: quit! or two quit's done in succession
135 * (where ZZ counts as a quit) didn't check for other files.
137 if (!force
&& sp
->ccnt
!= sp
->q_ccnt
+ 1 &&
138 sp
->cargv
!= NULL
&& sp
->cargv
[1] != NULL
) {
139 sp
->q_ccnt
= sp
->ccnt
;
141 for (ap
= sp
->cargv
+ 1; *ap
!= NULL
; ++ap
);
143 "167|%d more files to edit", (ap
- sp
->cargv
) - 1);
152 * Init the screen for ex.
154 * PUBLIC: int ex_init __P((SCR *));
164 if (gp
->scr_screen(sp
, SC_EX
))
166 (void)gp
->scr_attr(sp
, SA_ALTERNATE
, 0);
168 sp
->rows
= O_VAL(sp
, O_LINES
);
169 sp
->cols
= O_VAL(sp
, O_COLUMNS
);
172 F_SET(sp
, SC_EX
| SC_SCR_EX
);
178 * Display a few common ex and vi error messages.
180 * PUBLIC: void ex_emsg __P((SCR *, char *, exm_t));
183 ex_emsg(sp
, p
, which
)
190 msgq(sp
, M_ERR
, "168|Buffer %s is empty", p
);
193 msgq_str(sp
, M_ERR
, p
,
194 "144|%s: expanded into too many file names");
198 "283|The %s command requires the ex terminal interface", p
);
202 "272|That form of %s requires the ex terminal interface",
208 "274|Command failed, no file read in yet.");
211 "173|The %s command requires that a file have already been read in", p
);
214 msgq(sp
, M_ERR
, "171|No previous buffer to execute");
217 msgq(sp
, M_ERR
, "172|No previous regular expression");
220 msgq(sp
, M_ERR
, "230|This screen may not be suspended");
224 "290|The %s command is not supported when the secure edit option is set", p
);
228 "284|That form of %s is not supported when the secure edit option is set", p
);
231 msgq(sp
, M_ERR
, "174|Usage: %s", p
);