upstream/1.1.5.1_cvsrelease/1.1.5.1_cvsreleng/1

1 files changed, 248 insertions, 0 deletions

diff --git a/usr.bin/vi/put.c b/usr.bin/vi/put.c
new file mode 100644
index 000000000000..5f680734e7f6
--- /dev/null
+++ b/usr.bin/vi/put.c
@@ -0,0 +1,248 @@
+/*-
+ * Copyright (c) 1992, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)put.c	8.3 (Berkeley) 3/14/94";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <queue.h>
+#include <sys/time.h>
+
+#include <bitstring.h>
+#include <ctype.h>
+#include <limits.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <termios.h>
+
+#include <db.h>
+#include <regex.h>
+
+#include "vi.h"
+
+/*
+ * put --
+ *	Put text buffer contents into the file.
+ *
+ * !!!
+ * Historically, pasting into a file with no lines in vi would preserve
+ * the single blank line.  This is almost certainly a result of the fact
+ * that historic vi couldn't deal with a file that had no lines in it.
+ * This implementation treats that as a bug, and does not retain the blank
+ * line.
+ */
+int
+put(sp, ep, cbp, namep, cp, rp, append)
+	SCR *sp;
+	EXF *ep;
+	CB *cbp;
+	CHAR_T *namep;
+	MARK *cp, *rp;
+	int append;
+{
+	CHAR_T name;
+	TEXT *ltp, *tp;
+	recno_t lno;
+	size_t blen, clen, len;
+	char *bp, *p, *t;
+
+	if (cbp == NULL)
+		if (namep == NULL) {
+			cbp = sp->gp->dcbp;
+			if (cbp == NULL) {
+				msgq(sp, M_ERR, "The default buffer is empty.");
+				return (1);
+			}
+		} else {
+			name = *namep;
+			CBNAME(sp, cbp, name);
+			if (cbp == NULL) {
+				msgq(sp, M_ERR,
+				    "Buffer %s is empty.", charname(sp, name));
+				return (1);
+			}
+		}
+	tp = cbp->textq.cqh_first;
+
+	/*
+	 * It's possible to do a put into an empty file, meaning that the
+	 * cut buffer simply becomes the file.  It's a special case so
+	 * that we can ignore it in general.
+	 *
+	 * Historical practice is that the cursor ends up on the first
+	 * non-blank character of the first line inserted.
+	 */
+	if (cp->lno == 1) {
+		if (file_lline(sp, ep, &lno))
+			return (1);
+		if (lno == 0) {
+			for (; tp != (void *)&cbp->textq;
+			     ++lno, tp = tp->q.cqe_next)
+				if (file_aline(sp, ep, 1, lno, tp->lb, tp->len))
+					return (1);
+			rp->lno = 1;
+			rp->cno = 0;
+			(void)nonblank(sp, ep, rp->lno, &rp->cno);
+			goto ret;
+		}
+	}
+
+	/* If a line mode buffer, append each new line into the file. */
+	if (F_ISSET(cbp, CB_LMODE)) {
+		lno = append ? cp->lno : cp->lno - 1;
+		rp->lno = lno + 1;
+		for (; tp != (void *)&cbp->textq; ++lno, tp = tp->q.cqe_next)
+			if (file_aline(sp, ep, 1, lno, tp->lb, tp->len))
+				return (1);
+		rp->cno = 0;
+		(void)nonblank(sp, ep, rp->lno, &rp->cno);
+		goto ret;
+	}
+
+	/*
+	 * If buffer was cut in character mode, replace the current line with
+	 * one built from the portion of the first line to the left of the
+	 * split plus the first line in the CB.  Append each intermediate line
+	 * in the CB.  Append a line built from the portion of the first line
+	 * to the right of the split plus the last line in the CB.
+	 *
+	 * Get the first line.
+	 */
+	lno = cp->lno;
+	if ((p = file_gline(sp, ep, lno, &len)) == NULL) {
+		GETLINE_ERR(sp, lno);
+		return (1);
+	}
+
+	GET_SPACE_RET(sp, bp, blen, tp->len + len + 1);
+	t = bp;
+
+	/* Original line, left of the split. */
+	if (len > 0 && (clen = cp->cno + (append ? 1 : 0)) > 0) {
+		memmove(bp, p, clen);
+		p += clen;
+		t += clen;
+	}
+
+	/* First line from the CB. */
+	memmove(t, tp->lb, tp->len);
+	t += tp->len;
+
+	/* Calculate length left in original line. */
+	clen = len ? len - cp->cno - (append ? 1 : 0) : 0;
+
+	/*
+	 * If no more lines in the CB, append the rest of the original
+	 * line and quit.  Otherwise, build the last line before doing
+	 * the intermediate lines, because the line changes will lose
+	 * the cached line.
+	 */
+	if (tp->q.cqe_next == (void *)&cbp->textq) {
+		/*
+		 * Historical practice is that if a non-line mode put
+		 * is inside a single line, the cursor ends up on the
+		 * last character inserted.
+		 */
+		rp->lno = lno;
+		rp->cno = (t - bp) - 1;
+
+		if (clen > 0) {
+			memmove(t, p, clen);
+			t += clen;
+		}
+		if (file_sline(sp, ep, lno, bp, t - bp))
+			goto mem;
+	} else {
+		/*
+		 * Have to build both the first and last lines of the
+		 * put before doing any sets or we'll lose the cached
+		 * line.  Build both the first and last lines in the
+		 * same buffer, so we don't have to have another buffer
+		 * floating around.
+		 *
+		 * Last part of original line; check for space, reset
+		 * the pointer into the buffer.
+		 */
+		ltp = cbp->textq.cqh_last;
+		len = t - bp;
+		ADD_SPACE_RET(sp, bp, blen, ltp->len + clen);
+		t = bp + len;
+
+		/* Add in last part of the CB. */
+		memmove(t, ltp->lb, ltp->len);
+		if (clen)
+			memmove(t + ltp->len, p, clen);
+		clen += ltp->len;
+
+		/*
+		 * Now: bp points to the first character of the first
+		 * line, t points to the last character of the last
+		 * line, t - bp is the length of the first line, and
+		 * clen is the length of the last.  Just figured you'd
+		 * want to know.
+		 *
+		 * Output the line replacing the original line.
+		 */
+		if (file_sline(sp, ep, lno, bp, t - bp))
+			goto mem;
+
+		/*
+		 * Historical practice is that if a non-line mode put
+		 * covers multiple lines, the cursor ends up on the
+		 * first character inserted.  (Of course.)
+		 */
+		rp->lno = lno;
+		rp->cno = (t - bp) - 1;
+
+		/* Output any intermediate lines in the CB. */
+		for (tp = tp->q.cqe_next;
+		    tp->q.cqe_next != (void *)&cbp->textq;
+		    ++lno, tp = tp->q.cqe_next)
+			if (file_aline(sp, ep, 1, lno, tp->lb, tp->len))
+				goto mem;
+
+		if (file_aline(sp, ep, 1, lno, t, clen)) {
+mem:			FREE_SPACE(sp, bp, blen);
+			return (1);
+		}
+	}
+	FREE_SPACE(sp, bp, blen);
+
+	/* Reporting... */
+ret:	sp->rptlines[L_PUT] += lno - cp->lno;
+
+	return (0);
+}