vendor/tcsh/6.09

1 files changed, 516 insertions, 0 deletions

diff --git a/contrib/tcsh/sh.misc.c b/contrib/tcsh/sh.misc.c
new file mode 100644
index 000000000000..5b3595319f27
--- /dev/null
+++ b/contrib/tcsh/sh.misc.c
@@ -0,0 +1,516 @@
+/* $Header: /src/pub/tcsh/sh.misc.c,v 3.23 1997/02/23 19:03:23 christos Exp $ */
+/*
+ * sh.misc.c: Miscelaneous functions
+ */
+/*-
+ * Copyright (c) 1980, 1991 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.
+ */
+#include "sh.h"
+
+RCSID("$Id: sh.misc.c,v 3.23 1997/02/23 19:03:23 christos Exp $")
+
+static	int	renum	__P((int, int));
+static  Char  **blkend	__P((Char **));
+static  Char  **blkcat	__P((Char **, Char **));
+
+/*
+ * C Shell
+ */
+
+int
+any(s, c)
+    register char *s;
+    register int c;
+{
+    if (!s)
+	return (0);		/* Check for nil pointer */
+    while (*s)
+	if (*s++ == c)
+	    return (1);
+    return (0);
+}
+
+void
+setzero(cp, i)
+    char   *cp;
+    int     i;
+{
+    if (i != 0)
+	do
+	    *cp++ = 0;
+	while (--i);
+}
+
+char   *
+strsave(s)
+    register const char *s;
+{
+    char   *n;
+    register char *p;
+
+    if (s == NULL)
+	s = (const char *) "";
+    for (p = (char *) s; *p++ != '\0';)
+	continue;
+    n = p = (char *) xmalloc((size_t)
+			     ((((const char *) p) - s) * sizeof(char)));
+    while ((*p++ = *s++) != '\0')
+	continue;
+    return (n);
+}
+
+static Char  **
+blkend(up)
+    register Char **up;
+{
+
+    while (*up)
+	up++;
+    return (up);
+}
+
+
+void
+blkpr(av)
+    register Char **av;
+{
+
+    for (; *av; av++) {
+	xprintf("%S", *av);
+	if (av[1])
+	    xprintf(" ");
+    }
+}
+
+void
+blkexpand(av, str)
+    register Char **av;
+    Char *str;
+{
+    *str = '\0';
+    for (; *av; av++) {
+	(void) Strcat(str, *av);
+	if (av[1])
+	    (void) Strcat(str, STRspace);
+    }
+}
+
+int
+blklen(av)
+    register Char **av;
+{
+    register int i = 0;
+
+    while (*av++)
+	i++;
+    return (i);
+}
+
+Char  **
+blkcpy(oav, bv)
+    Char  **oav;
+    register Char **bv;
+{
+    register Char **av = oav;
+
+    while ((*av++ = *bv++) != NULL)
+	continue;
+    return (oav);
+}
+
+static Char  **
+blkcat(up, vp)
+    Char  **up, **vp;
+{
+
+    (void) blkcpy(blkend(up), vp);
+    return (up);
+}
+
+void
+blkfree(av0)
+    Char  **av0;
+{
+    register Char **av = av0;
+
+    if (!av0)
+	return;
+    for (; *av; av++)
+	xfree((ptr_t) * av);
+    xfree((ptr_t) av0);
+}
+
+Char  **
+saveblk(v)
+    register Char **v;
+{
+    register Char **newv =
+    (Char **) xcalloc((size_t) (blklen(v) + 1), sizeof(Char **));
+    Char  **onewv = newv;
+
+    while (*v)
+	*newv++ = Strsave(*v++);
+    return (onewv);
+}
+
+#if !defined(SHORT_STRINGS) && !defined(POSIX)
+char   *
+strstr(s, t)
+    register const char *s, *t;
+{
+    do {
+	register const char *ss = s;
+	register const char *tt = t;
+
+	do
+	    if (*tt == '\0')
+		return ((char *) s);
+	while (*ss++ == *tt++);
+    } while (*s++ != '\0');
+    return (NULL);
+}
+
+#endif /* !SHORT_STRINGS && !POSIX */
+
+#ifndef SHORT_STRINGS
+char   *
+strspl(cp, dp)
+    char   *cp, *dp;
+{
+    char   *ep;
+    register char *p, *q;
+
+    if (!cp)
+	cp = "";
+    if (!dp)
+	dp = "";
+    for (p = cp; *p++ != '\0';)
+	continue;
+    for (q = dp; *q++ != '\0';)
+	continue;
+    ep = (char *) xmalloc((size_t) (((p - cp) + (q - dp) - 1) * sizeof(char)));
+    for (p = ep, q = cp; (*p++ = *q++) != '\0';)
+	continue;
+    for (p--, q = dp; (*p++ = *q++) != '\0';)
+	continue;
+    return (ep);
+}
+
+#endif /* !SHORT_STRINGS */
+
+Char  **
+blkspl(up, vp)
+    register Char **up, **vp;
+{
+    register Char **wp =
+    (Char **) xcalloc((size_t) (blklen(up) + blklen(vp) + 1),
+		      sizeof(Char **));
+
+    (void) blkcpy(wp, up);
+    return (blkcat(wp, vp));
+}
+
+Char
+lastchr(cp)
+    register Char *cp;
+{
+
+    if (!cp)
+	return (0);
+    if (!*cp)
+	return (0);
+    while (cp[1])
+	cp++;
+    return (*cp);
+}
+
+/*
+ * This routine is called after an error to close up
+ * any units which may have been left open accidentally.
+ */
+void
+closem()
+{
+    register int f;
+
+#ifdef YPBUGS
+    /* suggested by Justin Bur; thanks to Karl Kleinpaste */
+    fix_yp_bugs();
+#endif /* YPBUGS */
+    for (f = 0; f < NOFILE; f++)
+	if (f != SHIN && f != SHOUT && f != SHDIAG && f != OLDSTD &&
+	    f != FSHTTY 
+#ifdef MALLOC_TRACE
+	    && f != 25
+#endif /* MALLOC_TRACE */
+	    )
+	  {
+	    (void) close(f);
+#ifdef NISPLUS
+	    if(f < 3)
+		(void) open(_PATH_DEVNULL, O_RDONLY);
+#endif /* NISPLUS */
+	  }
+}
+
+#ifndef CLOSE_ON_EXEC
+/*
+ * Close files before executing a file.
+ * We could be MUCH more intelligent, since (on a version 7 system)
+ * we need only close files here during a source, the other
+ * shell fd's being in units 16-19 which are closed automatically!
+ */
+void
+closech()
+{
+    register int f;
+
+    if (didcch)
+	return;
+    didcch = 1;
+    SHIN = 0;
+    SHOUT = 1;
+    SHDIAG = 2;
+    OLDSTD = 0;
+    isoutatty = isatty(SHOUT);
+    isdiagatty = isatty(SHDIAG);
+    for (f = 3; f < NOFILE; f++)
+	(void) close(f);
+}
+
+#endif /* CLOSE_ON_EXEC */
+
+void
+donefds()
+{
+
+    (void) close(0);
+    (void) close(1);
+    (void) close(2);
+    didfds = 0;
+#ifdef NISPLUS
+    {
+	int fd = open(_PATH_DEVNULL, O_RDONLY);
+	(void) dup2(fd, 1);
+	(void) dup2(fd, 2);
+	if (fd != 0) {
+	    (void) dup2(fd, 0);
+	    (void) close(fd);
+	}
+    }
+#endif /*NISPLUS*/    
+}
+
+/*
+ * Move descriptor i to j.
+ * If j is -1 then we just want to get i to a safe place,
+ * i.e. to a unit > 2.  This also happens in dcopy.
+ */
+int
+dmove(i, j)
+    register int i, j;
+{
+
+    if (i == j || i < 0)
+	return (i);
+#ifdef HAVEDUP2
+    if (j >= 0) {
+	(void) dup2(i, j);
+	if (j != i)
+	    (void) close(i);
+	return (j);
+    }
+#endif
+    j = dcopy(i, j);
+    if (j != i)
+	(void) close(i);
+    return (j);
+}
+
+int
+dcopy(i, j)
+    register int i, j;
+{
+
+    if (i == j || i < 0 || (j < 0 && i > 2))
+	return (i);
+    if (j >= 0) {
+#ifdef HAVEDUP2
+	(void) dup2(i, j);
+	return (j);
+#else
+	(void) close(j);
+#endif
+    }
+    return (renum(i, j));
+}
+
+static int
+renum(i, j)
+    register int i, j;
+{
+    register int k = dup(i);
+
+    if (k < 0)
+	return (-1);
+    if (j == -1 && k > 2)
+	return (k);
+    if (k != j) {
+	j = renum(k, j);
+	(void) close(k);
+	return (j);
+    }
+    return (k);
+}
+
+/*
+ * Left shift a command argument list, discarding
+ * the first c arguments.  Used in "shift" commands
+ * as well as by commands like "repeat".
+ */
+void
+lshift(v, c)
+    register Char **v;
+    register int c;
+{
+    register Char **u;
+
+    for (u = v; *u && --c >= 0; u++)
+	xfree((ptr_t) *u);
+    (void) blkcpy(v, u);
+}
+
+int
+number(cp)
+    Char   *cp;
+{
+    if (!cp)
+	return (0);
+    if (*cp == '-') {
+	cp++;
+	if (!Isdigit(*cp))
+	    return (0);
+	cp++;
+    }
+    while (*cp && Isdigit(*cp))
+	cp++;
+    return (*cp == 0);
+}
+
+Char  **
+copyblk(v)
+    register Char **v;
+{
+    register Char **nv =
+    (Char **) xcalloc((size_t) (blklen(v) + 1), sizeof(Char **));
+
+    return (blkcpy(nv, v));
+}
+
+#ifndef SHORT_STRINGS
+char   *
+strend(cp)
+    register char *cp;
+{
+    if (!cp)
+	return (cp);
+    while (*cp)
+	cp++;
+    return (cp);
+}
+
+#endif /* SHORT_STRINGS */
+
+Char   *
+strip(cp)
+    Char   *cp;
+{
+    register Char *dp = cp;
+
+    if (!cp)
+	return (cp);
+    while ((*dp++ &= TRIM) != '\0')
+	continue;
+    return (cp);
+}
+
+Char   *
+quote(cp)
+    Char   *cp;
+{
+    register Char *dp = cp;
+
+    if (!cp)
+	return (cp);
+    while (*dp != '\0')
+	*dp++ |= QUOTE;
+    return (cp);
+}
+
+Char   *
+quote_meta(d, s)
+    Char   *d;
+    const Char   *s;
+{
+    Char *r = d;
+    while (*s != '\0') {
+	if (cmap(*s, _META | _DOL | _QF | _QB | _ESC | _GLOB))
+		*d++ = '\\';
+	*d++ = *s++;
+    }
+    *d = '\0';
+    return r;
+}
+
+void
+udvar(name)
+    Char   *name;
+{
+
+    setname(short2str(name));
+    stderror(ERR_NAME | ERR_UNDVAR);
+}
+
+int
+prefix(sub, str)
+    register Char *sub, *str;
+{
+
+    for (;;) {
+	if (*sub == 0)
+	    return (1);
+	if (*str == 0)
+	    return (0);
+	if ((*sub++ & TRIM) != (*str++ & TRIM))
+	    return (0);
+    }
+}