NetBSD/usr.bin/vi/ex/ex_perl.c

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1996-05-20 05:53:18 +04:00
/*-
* Copyright (c) 1992, 1993, 1994
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1992, 1993, 1994, 1995, 1996
* Keith Bostic. All rights reserved.
* Copyright (c) 1995
* George V. Neville-Neil. All rights reserved.
* Copyright (c) 1996
* Sven Verdoolaege. All rights reserved.
*
* See the LICENSE file for redistribution information.
*/
#include "config.h"
#ifndef lint
static const char sccsid[] = "@(#)ex_perl.c 8.6 (Berkeley) 3/18/96";
#endif /* not lint */
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/time.h>
#include <bitstring.h>
#include <ctype.h>
#include <limits.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include "../common/common.h"
#ifdef HAVE_PERL_INTERP
#include <EXTERN.h>
#include <perl.h>
#include <XSUB.h>
static int perl_eval(string)
char *string;
{
char *argv[2];
argv[0] = string;
argv[1] = NULL;
perl_call_argv("_eval_", G_EVAL | G_DISCARD | G_KEEPERR, argv);
}
#else
static void
noperl(scrp)
SCR *scrp;
{
msgq(scrp, M_ERR, "306|Vi was not loaded with a Perl interpreter");
}
#endif
/*
* ex_perl -- :[line [,line]] perl [command]
* Run a command through the perl interpreter.
*
* PUBLIC: int ex_perl __P((SCR*, EXCMD *));
*/
int
ex_perl(scrp, cmdp)
SCR *scrp;
EXCMD *cmdp;
{
#ifdef HAVE_PERL_INTERP
CHAR_T *p;
GS *gp;
STRLEN length;
size_t len;
char *err, buf[64];
/* Initialize the interpreter. */
gp = scrp->gp;
if (gp->perl_interp == NULL && perl_init(gp))
return (1);
/* Skip leading white space. */
if (cmdp->argc != 0)
for (p = cmdp->argv[0]->bp,
len = cmdp->argv[0]->len; len > 0; --len, ++p)
if (!isblank(*p))
break;
if (cmdp->argc == 0 || len == 0) {
ex_emsg(scrp, cmdp->cmd->usage, EXM_USAGE);
return (1);
}
(void)snprintf(buf, sizeof(buf),
"$VI::ScreenId=%d;$VI::StartLine=%lu;$VI::StopLine=%lu",
scrp->id, cmdp->addr1.lno, cmdp->addr2.lno);
perl_eval(buf);
perl_eval(cmdp->argv[0]->bp);
err = SvPV(GvSV(errgv),length);
if (!length)
return (0);
err[length - 1] = '\0';
msgq(scrp, M_ERR, "perl: %s", err);
return (1);
#else
noperl(scrp);
return (1);
#endif /* HAVE_PERL_INTERP */
}
/*
* ex_perldo -- :[line [,line]] perl [command]
* Run a set of lines through the perl interpreter.
*
* PUBLIC: int ex_perldo __P((SCR*, EXCMD *));
*/
int
ex_perldo(scrp, cmdp)
SCR *scrp;
EXCMD *cmdp;
{
#ifdef HAVE_PERL_INTERP
CHAR_T *p;
GS *gp;
STRLEN length;
size_t len;
int i;
char *str, *argv[2];
dSP;
/* Initialize the interpreter. */
gp = scrp->gp;
if (gp->perl_interp == NULL && perl_init(gp))
return (1);
/* Skip leading white space. */
if (cmdp->argc != 0)
for (p = cmdp->argv[0]->bp,
len = cmdp->argv[0]->len; len > 0; --len, ++p)
if (!isblank(*p))
break;
if (cmdp->argc == 0 || len == 0) {
ex_emsg(scrp, cmdp->cmd->usage, EXM_USAGE);
return (1);
}
argv[0] = cmdp->argv[0]->bp;
argv[1] = NULL;
ENTER;
SAVETMPS;
for (i = cmdp->addr1.lno; i <= cmdp->addr2.lno; i++) {
/*api_gline(scrp, i, argv+1, &len);*/
api_gline(scrp, i, &str, &len);
sv_setpvn(perl_get_sv("_", FALSE),str,len);
perl_call_argv("_eval_", G_SCALAR | G_EVAL | G_KEEPERR, argv);
str = SvPV(GvSV(errgv),length);
if (length) break;
SPAGAIN;
if(SvTRUEx(POPs)) {
str = SvPV(perl_get_sv("_", FALSE),len);
api_sline(scrp, i, str, len);
}
PUTBACK;
}
FREETMPS;
LEAVE;
if (!length)
return (0);
str[length - 1] = '\0';
msgq(scrp, M_ERR, "perl: %s", str);
return (1);
#else
noperl(scrp);
return (1);
#endif /* HAVE_PERL_INTERP */
}