add musl and vi

1 files changed, 178 insertions, 0 deletions

diff --git a/ex_tagio.c b/ex_tagio.c
new file mode 100644
index 0000000..73141a3
--- /dev/null
+++ b/ex_tagio.c
@@ -0,0 +1,178 @@
+/* Copyright (c) 1985 Regents of the University of California */
+
+/*
+ * These routines are for faster tag lookup.  They support the binary
+ * search used in tagfind() instead of the linear search.  The speedup
+ * is quite noticable looking for a tag at the end of a long tags
+ * file.  Define FASTTAG in the Makefile to use these routines.
+ *
+ * This code contains changes by
+ *      Gunnar Ritter, Freiburg i. Br., Germany, 2002. All rights reserved.
+ *
+ * Conditions 1, 2, and 4 and the no-warranty notice below apply
+ * to these changes.
+ *
+ *
+ * Copyright (c) 1980, 1993
+ * 	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.
+ *
+ *
+ * Copyright(C) Caldera International Inc. 2001-2002. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *   Redistributions of source code and documentation must retain the
+ *    above copyright notice, this list of conditions and the following
+ *    disclaimer.
+ *   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.
+ *   All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed or owned by Caldera
+ *      International, Inc.
+ *   Neither the name of Caldera International, Inc. nor the names of
+ *    other contributors may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * USE OF THE SOFTWARE PROVIDED FOR UNDER THIS LICENSE BY CALDERA
+ * INTERNATIONAL, INC. 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 CALDERA INTERNATIONAL, INC. 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.
+ */
+
+#ifdef FASTTAG
+#ifndef	lint
+#ifdef	DOSCCS
+static char sccsid[] = "@(#)ex_tagio.c	1.12 (gritter) 8/4/05";
+#endif
+#endif
+
+/* from ex_tagio.c	7.3 (Berkeley) 1/31/86 */
+
+#include "ex.h"
+
+static long offset = -1;
+static long block = -1;
+static int bcnt = 0;
+static int b_size;
+static char *ibuf;
+
+int 
+topen(char *file, char *buf)
+{
+	int fd;
+	struct stat statb;
+
+	b_size = MAXBSIZE;
+	offset = -1;
+	block = -1;
+	if ((fd = open(file, O_RDONLY, 0)) < 0)
+		return(-1);
+	if (fstat(fd, &statb) < 0) {
+		close(fd);
+		return(-1);
+	}
+	ibuf = buf;
+	if (statb.st_blksize <= MAXBSIZE)
+		b_size = statb.st_blksize;
+	return(fd);
+}
+
+int 
+tseek(int fd, off_t off)
+{
+	off_t nblock;
+
+	nblock = off / b_size * b_size;
+	offset = off % b_size;
+	if (nblock == block)
+		return(0);
+	block = nblock;
+	if (lseek(fd, (off_t) nblock, SEEK_SET) < 0)
+		return(-1);
+	if ((bcnt = read(fd, ibuf, b_size)) < 0)
+		return(-1);
+	return(0);
+}
+
+int 
+tgets(register char *buf, int cnt, int fd)
+{
+	register char *cp;
+	register int cc;
+
+	cc = offset;
+	if (cc == -1) {
+		if ((bcnt = read(fd, ibuf, b_size)) <= 0)
+			return 0;
+		cc = 0;
+		block = 0;
+	}
+	if (bcnt == 0)		/* EOF */
+		return 0;
+	cp = ibuf + cc;
+	while (--cnt > 0) {
+		if (++cc > bcnt) {
+			block += b_size;
+			if ((bcnt = read(fd, ibuf, b_size)) <= 0) {
+				offset = cc;
+				return 0;
+			}
+			cp = ibuf;
+			cc = 1;
+		}
+		if ((*buf++ = *cp++) == '\n')
+			break;
+	}
+	*--buf = 0;
+	offset = cc;
+	return(1);
+}
+
+void 
+tclose(int fd)
+{
+	close(fd);
+	offset = -1;
+	block = -1;
+	bcnt = 0;
+}
+#endif