386BSD 0.1 development

Work on file usr/src/bin/cp/cp.h
Work on file usr/src/bin/cp/path.c

Co-Authored-By: Lynne Greer Jolitz <ljolitz@cardio.ucsf.edu>
Synthesized-from: 386BSD-0.1

diff --git a/usr/src/bin/cp/cp.h b/usr/src/bin/cp/cp.h
new file mode 100644 (file)
index 0000000..f0f9e8d
--- /dev/null
+++ b/usr/src/bin/cp/cp.h
@@ -0,0 +1,50 @@
+/*-
+ * Copyright (c) 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.
+ *
+ *     @(#)cp.h        5.2 (Berkeley) 4/3/91
+ */
+
+typedef struct {
+       char *p_end;                    /* pointer to NULL at end of path */
+       char p_path[MAXPATHLEN + 1];    /* pointer to the start of a path */
+} PATH_T;
+
+extern char *progname;                 /* program name */
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+int     path_set __P((PATH_T *, char *));
+char   *path_append __P((PATH_T *, char *, int));
+char   *path_basename __P((PATH_T *));
+void    path_restore __P((PATH_T *, char *));
+__END_DECLS

diff --git a/usr/src/bin/cp/path.c b/usr/src/bin/cp/path.c
new file mode 100644 (file)
index 0000000..96b9e16
--- /dev/null
+++ b/usr/src/bin/cp/path.c
@@ -0,0 +1,147 @@
+/*-
+ * Copyright (c) 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.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)path.c     5.1 (Berkeley) 4/3/91";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <stdio.h>
+#include <string.h>
+#include "cp.h"
+
+/*
+ * These functions manipulate paths in PATH_T structures.
+ * 
+ * They eliminate multiple slashes in paths when they notice them,
+ * and keep the path non-slash terminated.
+ *
+ * Both path_set() and path_append() return 0 if the requested name
+ * would be too long.
+ */
+
+#define        STRIP_TRAILING_SLASH(p) { \
+       while ((p)->p_end > (p)->p_path && (p)->p_end[-1] == '/') \
+               *--(p)->p_end = 0; \
+}
+
+/*
+ * Move specified string into path.  Convert "" to "." to handle BSD
+ * semantics for a null path.  Strip trailing slashes.
+ */
+path_set(p, string)
+       register PATH_T *p;
+       char *string;
+{
+       if (strlen(string) > MAXPATHLEN) {
+               (void)fprintf(stderr,
+                   "%s: %s: name too long.\n", progname, string);
+               return(0);
+       }
+
+       (void)strcpy(p->p_path, string);
+       p->p_end = p->p_path + strlen(p->p_path);
+
+       if (p->p_path == p->p_end) {
+               *p->p_end++ = '.';
+               *p->p_end = 0;
+       }
+
+       STRIP_TRAILING_SLASH(p);
+       return(1);
+}
+
+/*
+ * Append specified string to path, inserting '/' if necessary.  Return a
+ * pointer to the old end of path for restoration.
+ */
+char *
+path_append(p, name, len)
+       register PATH_T *p;
+       char *name;
+       int len;
+{
+       char *old;
+
+       old = p->p_end;
+       if (len == -1)
+               len = strlen(name);
+
+       /* The "+ 1" accounts for the '/' between old path and name. */
+       if ((len + p->p_end - p->p_path + 1) > MAXPATHLEN) {
+               (void)fprintf(stderr,
+                   "%s: %s/%s: name too long.\n", progname, p->p_path, name);
+               return(0);
+       }
+
+       /*
+        * This code should always be executed, since paths shouldn't
+        * end in '/'.
+        */
+       if (p->p_end[-1] != '/') {
+               *p->p_end++ = '/';
+               *p->p_end = 0;
+       }
+
+       (void)strncat(p->p_end, name, len);
+       p->p_end += len;
+       *p->p_end = 0;
+
+       STRIP_TRAILING_SLASH(p);
+       return(old);
+}
+
+/*
+ * Restore path to previous value.  (As returned by path_append.)
+ */
+void
+path_restore(p, old)
+       PATH_T *p;
+       char *old;
+{
+       p->p_end = old;
+       *p->p_end = 0;
+}
+
+/*
+ * Return basename of path.
+ */
+char *
+path_basename(p)
+       PATH_T *p;
+{
+       char *basename;
+
+       basename = rindex(p->p_path, '/');
+       return(basename ? basename + 1 : p->p_path);
+}