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/* $OpenBSD: ex_util.c,v 1.7 2009/10/27 23:59:47 deraadt Exp $ */
/*-
* Copyright (c) 1993, 1994
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1993, 1994, 1995, 1996
* Keith Bostic. All rights reserved.
*
* See the LICENSE file for redistribution information.
*/
#include "config.h"
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/stat.h>
#include <bitstring.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "../common/common.h"
/*
* ex_cinit --
* Create an EX command structure.
*
* PUBLIC: void ex_cinit(EXCMD *, int, int, recno_t, recno_t, int, ARGS **);
*/
void
ex_cinit(cmdp, cmd_id, naddr, lno1, lno2, force, ap)
EXCMD *cmdp;
int cmd_id, force, naddr;
recno_t lno1, lno2;
ARGS **ap;
{
memset(cmdp, 0, sizeof(EXCMD));
cmdp->cmd = &cmds[cmd_id];
cmdp->addrcnt = naddr;
cmdp->addr1.lno = lno1;
cmdp->addr2.lno = lno2;
cmdp->addr1.cno = cmdp->addr2.cno = 1;
if (force)
cmdp->iflags |= E_C_FORCE;
cmdp->argc = 0;
if ((cmdp->argv = ap) != NULL)
cmdp->argv[0] = NULL;
}
/*
* ex_cadd --
* Add an argument to an EX command structure.
*
* PUBLIC: void ex_cadd(EXCMD *, ARGS *, char *, size_t);
*/
void
ex_cadd(cmdp, ap, arg, len)
EXCMD *cmdp;
ARGS *ap;
char *arg;
size_t len;
{
cmdp->argv[cmdp->argc] = ap;
ap->bp = arg;
ap->len = len;
cmdp->argv[++cmdp->argc] = NULL;
}
/*
* ex_getline --
* Return a line from the file.
*
* PUBLIC: int ex_getline(SCR *, FILE *, size_t *);
*/
int
ex_getline(sp, fp, lenp)
SCR *sp;
FILE *fp;
size_t *lenp;
{
EX_PRIVATE *exp;
size_t off;
int ch;
char *p;
exp = EXP(sp);
for (errno = 0, off = 0, p = exp->ibp;;) {
if (off >= exp->ibp_len) {
BINC_RET(sp, exp->ibp, exp->ibp_len, off + 1);
p = exp->ibp + off;
}
if ((ch = getc(fp)) == EOF && !feof(fp)) {
if (errno == EINTR) {
errno = 0;
clearerr(fp);
continue;
}
return (1);
}
if (ch == EOF || ch == '\n') {
if (ch == EOF && !off)
return (1);
*lenp = off;
return (0);
}
*p++ = ch;
++off;
}
/* NOTREACHED */
}
/*
* ex_ncheck --
* Check for more files to edit.
*
* PUBLIC: int ex_ncheck(SCR *, int);
*/
int
ex_ncheck(sp, force)
SCR *sp;
int force;
{
char **ap;
/*
* !!!
* Historic practice: quit! or two quit's done in succession
* (where ZZ counts as a quit) didn't check for other files.
*/
if (!force && sp->ccnt != sp->q_ccnt + 1 &&
sp->cargv != NULL && sp->cargv[1] != NULL) {
sp->q_ccnt = sp->ccnt;
for (ap = sp->cargv + 1; *ap != NULL; ++ap);
msgq(sp, M_ERR,
"167|%d more files to edit", (ap - sp->cargv) - 1);
return (1);
}
return (0);
}
/*
* ex_init --
* Init the screen for ex.
*
* PUBLIC: int ex_init(SCR *);
*/
int
ex_init(sp)
SCR *sp;
{
GS *gp;
gp = sp->gp;
if (gp->scr_screen(sp, SC_EX))
return (1);
(void)gp->scr_attr(sp, SA_ALTERNATE, 0);
sp->rows = O_VAL(sp, O_LINES);
sp->cols = O_VAL(sp, O_COLUMNS);
F_CLR(sp, SC_VI);
F_SET(sp, SC_EX | SC_SCR_EX);
return (0);
}
/*
* ex_emsg --
* Display a few common ex and vi error messages.
*
* PUBLIC: void ex_emsg(SCR *, char *, exm_t);
*/
void
ex_emsg(sp, p, which)
SCR *sp;
char *p;
exm_t which;
{
switch (which) {
case EXM_EMPTYBUF:
msgq(sp, M_ERR, "168|Buffer %s is empty", p);
break;
case EXM_FILECOUNT:
msgq_str(sp, M_ERR, p,
"144|%s: expanded into too many file names");
break;
case EXM_NOCANON:
msgq(sp, M_ERR,
"283|The %s command requires the ex terminal interface", p);
break;
case EXM_NOCANON_F:
msgq(sp, M_ERR,
"272|That form of %s requires the ex terminal interface",
p);
break;
case EXM_NOFILEYET:
if (p == NULL)
msgq(sp, M_ERR,
"274|Command failed, no file read in yet.");
else
msgq(sp, M_ERR,
"173|The %s command requires that a file have already been read in", p);
break;
case EXM_NOPREVBUF:
msgq(sp, M_ERR, "171|No previous buffer to execute");
break;
case EXM_NOPREVRE:
msgq(sp, M_ERR, "172|No previous regular expression");
break;
case EXM_NOSUSPEND:
msgq(sp, M_ERR, "230|This screen may not be suspended");
break;
case EXM_SECURE:
msgq(sp, M_ERR,
"290|The %s command is not supported when the secure edit option is set", p);
break;
case EXM_SECURE_F:
msgq(sp, M_ERR,
"284|That form of %s is not supported when the secure edit option is set", p);
break;
case EXM_USAGE:
msgq(sp, M_ERR, "174|Usage: %s", p);
break;
}
}
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