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📁 ..
📄 ex.awk(115 B)
📄 ex.c(61.91 KB)
📄 ex.h(8.63 KB)
📄 ex_abbrev.c(2.63 KB)
📄 ex_append.c(7.05 KB)
📄 ex_args.c(7.03 KB)
📄 ex_argv.c(20.06 KB)
📄 ex_at.c(3.14 KB)
📄 ex_bang.c(5.25 KB)
📄 ex_cd.c(2.84 KB)
📄 ex_cmd.c(11.69 KB)
📄 ex_cscope.c(24.32 KB)
📄 ex_def.h(1.4 KB)
📄 ex_delete.c(1.3 KB)
📄 ex_display.c(2.71 KB)
📄 ex_edit.c(3.5 KB)
📄 ex_equal.c(1.17 KB)
📄 ex_file.c(1.56 KB)
📄 ex_filter.c(8.38 KB)
📄 ex_global.c(7.17 KB)
📄 ex_init.c(9.93 KB)
📄 ex_join.c(4.36 KB)
📄 ex_map.c(3.01 KB)
📄 ex_mark.c(787 B)
📄 ex_mkexrc.c(1.96 KB)
📄 ex_move.c(4.16 KB)
📄 ex_open.c(867 B)
📄 ex_preserve.c(1.92 KB)
📄 ex_print.c(6.43 KB)
📄 ex_put.c(880 B)
📄 ex_quit.c(801 B)
📄 ex_read.c(8 KB)
📄 ex_screen.c(2.22 KB)
📄 ex_script.c(12.76 KB)
📄 ex_set.c(737 B)
📄 ex_shell.c(4.95 KB)
📄 ex_shift.c(4.59 KB)
📄 ex_source.c(2.01 KB)
📄 ex_stop.c(928 B)
📄 ex_subst.c(34.22 KB)
📄 ex_tag.c(28.84 KB)
📄 ex_txt.c(10.91 KB)
📄 ex_undo.c(1.33 KB)
📄 ex_usage.c(4.15 KB)
📄 ex_util.c(4.18 KB)
📄 ex_version.c(721 B)
📄 ex_visual.c(3.68 KB)
📄 ex_write.c(8 KB)
📄 ex_yank.c(882 B)
📄 ex_z.c(3.56 KB)
📄 extern.h(4.37 KB)
📄 script.h(588 B)
📄 tag.h(3.09 KB)
📄 version.h(40 B)

Editing: ex_at.c

/*-
 * 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.
 *
 * See the LICENSE file for redistribution information.
 */

#include "config.h"

#include <sys/types.h>
#include <sys/queue.h>
#include <sys/time.h>

#include <bitstring.h>
#include <ctype.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "../common/common.h"

/*
 * ex_at -- :@[@ | buffer]
 *	    :*[* | buffer]
 *
 *	Execute the contents of the buffer.
 *
 * PUBLIC: int ex_at(SCR *, EXCMD *);
 */
int
ex_at(SCR *sp, EXCMD *cmdp)
{
	CB *cbp;
	CHAR_T name;
	EXCMD *ecp;
	RANGE *rp;
	TEXT *tp;
	size_t len = 0;
	CHAR_T *p;

/*
	 * !!!
	 * Historically, [@*]<carriage-return> and [@*][@*] executed the most
	 * recently executed buffer in ex mode.
	 */
	name = FL_ISSET(cmdp->iflags, E_C_BUFFER) ? cmdp->buffer : '@';
	if (name == '@' || name == '*') {
		if (!F_ISSET(sp, SC_AT_SET)) {
			ex_emsg(sp, NULL, EXM_NOPREVBUF);
			return (1);
		}
		name = sp->at_lbuf;
	}
	sp->at_lbuf = name;
	F_SET(sp, SC_AT_SET);

CBNAME(sp, cbp, name);
	if (cbp == NULL) {
		ex_emsg(sp, KEY_NAME(sp, name), EXM_EMPTYBUF);
		return (1);
	}

/*
	 * !!!
	 * Historically the @ command took a range of lines, and the @ buffer
	 * was executed once per line.  The historic vi could be trashed by
	 * this because it didn't notice if the underlying file changed, or,
	 * for that matter, if there were no more lines on which to operate.
	 * For example, take a 10 line file, load "%delete" into a buffer,
	 * and enter :8,10@<buffer>.
	 *
	 * The solution is a bit tricky.  If the user specifies a range, take
	 * the same approach as for global commands, and discard the command
	 * if exit or switch to a new file/screen.  If the user doesn't specify
	 * the  range, continue to execute after a file/screen switch, which
	 * means @ buffers are still useful in a multi-screen environment.
	 */
	CALLOC_RET(sp, ecp, 1, sizeof(EXCMD));
	TAILQ_INIT(ecp->rq);
	CALLOC_RET(sp, rp, 1, sizeof(RANGE));
	rp->start = cmdp->addr1.lno;
	if (F_ISSET(cmdp, E_ADDR_DEF)) {
		rp->stop = rp->start;
		FL_SET(ecp->agv_flags, AGV_AT_NORANGE);
	} else {
		rp->stop = cmdp->addr2.lno;
		FL_SET(ecp->agv_flags, AGV_AT);
	}
	TAILQ_INSERT_HEAD(ecp->rq, rp, q);

/*
	 * Buffers executed in ex mode or from the colon command line in vi
	 * were ex commands.  We can't push it on the terminal queue, since
	 * it has to be executed immediately, and we may be in the middle of
	 * an ex command already.  Push the command on the ex command stack.
	 * Build two copies of the command.  We need two copies because the
	 * ex parser may step on the command string when it's parsing it.
	 */
	TAILQ_FOREACH_REVERSE(tp, cbp->textq, _texth, q)
		len += tp->len + 1;

MALLOC_RET(sp, ecp->cp, len * 2 * sizeof(CHAR_T));
	ecp->o_cp = ecp->cp;
	ecp->o_clen = len;
	ecp->cp[len] = '\0';

/* Copy the buffer into the command space. */
	p = ecp->cp + len;
	TAILQ_FOREACH_REVERSE(tp, cbp->textq, _texth, q) {
		MEMCPY(p, tp->lb, tp->len);
		p += tp->len;
		*p++ = '\n';
	}

SLIST_INSERT_HEAD(sp->gp->ecq, ecp, q);
	return (0);
}

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Editing: ex_at.c

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