initial population

1 files changed, 168 insertions, 0 deletions

diff --git a/bin/ls/util.c b/bin/ls/util.c
new file mode 100644
index 0000000..61b0fda
--- /dev/null
+++ b/bin/ls/util.c
@@ -0,0 +1,168 @@
+/*	$NetBSD: util.c,v 1.34 2011/08/29 14:44:21 joerg Exp $	*/
+
+/*
+ * Copyright (c) 1989, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Michael Fischbein.
+ *
+ * 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. 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 <sys/cdefs.h>
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)util.c	8.5 (Berkeley) 4/28/95";
+#else
+__RCSID("$NetBSD: util.c,v 1.34 2011/08/29 14:44:21 joerg Exp $");
+#endif
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <err.h>
+#include <fts.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <vis.h>
+#include <wchar.h>
+#include <wctype.h>
+
+#include "ls.h"
+#include "extern.h"
+
+int
+safe_print(const char *src)
+{
+	size_t len;
+	char *name;
+	int flags;
+
+	flags = VIS_NL | VIS_OCTAL | VIS_WHITE;
+	if (f_octal_escape)
+		flags |= VIS_CSTYLE;
+
+	len = strlen(src);
+	if (len != 0 && SIZE_T_MAX/len <= 4) {
+		errx(EXIT_FAILURE, "%s: name too long", src);
+		/* NOTREACHED */
+	}
+
+	name = (char *)malloc(4*len+1);
+	if (name != NULL) {
+		len = strvis(name, src, flags);
+		(void)printf("%s", name);
+		free(name);
+		return len;
+	} else
+		errx(EXIT_FAILURE, "out of memory!");
+		/* NOTREACHED */
+}
+
+/*
+ * The reasons why we don't use putwchar(wc) here are:
+ * - If wc == L'\0', we need to restore the initial shift state, but
+ *   the C language standard doesn't say that putwchar(L'\0') does.
+ * - It isn't portable to mix a wide-oriented function (i.e. getwchar)
+ *   with byte-oriented functions (printf et al.) in same FILE.
+ */
+static int
+printwc(wchar_t wc, mbstate_t *pst)
+{
+	size_t size;
+	char buf[MB_LEN_MAX];
+
+	size = wcrtomb(buf, wc, pst);
+	if (size == (size_t)-1) /* This shouldn't happen, but for sure */
+		return 0;
+	if (wc == L'\0') {
+		/* The following condition must be always true, but for sure */
+		if (size > 0 && buf[size - 1] == '\0')
+			--size;
+	}
+	if (size > 0)
+		fwrite(buf, 1, size, stdout);
+	return wc == L'\0' ? 0 : wcwidth(wc);
+}
+
+int
+printescaped(const char *src)
+{
+	int n = 0;
+	mbstate_t src_state, stdout_state;
+	/* The following +1 is to pass '\0' at the end of src to mbrtowc(). */
+	const char *endptr = src + strlen(src) + 1;
+
+	/*
+	 * We have to reset src_state each time in this function, because
+	 * the codeset of src pathname may not match with current locale.
+	 * Note that if we pass NULL instead of src_state to mbrtowc(),
+	 * there is no way to reset the state.
+	 */
+	memset(&src_state, 0, sizeof(src_state));
+	memset(&stdout_state, 0, sizeof(stdout_state));
+	while (src < endptr) {
+		wchar_t wc;
+		size_t rv, span = endptr - src;
+
+#if 0
+		/*
+		 * XXX - we should fix libc instead.
+		 * Theoretically this should work, but our current
+		 * implementation of iso2022 module doesn't actually work
+		 * as expected, if there are redundant escape sequences
+		 * which exceed 32 bytes.
+		 */
+		if (span > MB_CUR_MAX)
+			span = MB_CUR_MAX;
+#endif
+		rv = mbrtowc(&wc, src, span, &src_state);
+		if (rv == 0) { /* assert(wc == L'\0'); */
+			/* The following may output a shift sequence. */
+			n += printwc(wc, &stdout_state);
+			break;
+		}
+		if (rv == (size_t)-1) { /* probably errno == EILSEQ */
+			n += printwc(L'?', &stdout_state);
+			/* try to skip 1byte, because there is no better way */
+			src++;
+			memset(&src_state, 0, sizeof(src_state));
+		} else if (rv == (size_t)-2) {
+			if (span < MB_CUR_MAX) { /* incomplete char */
+				n += printwc(L'?', &stdout_state);
+				break;
+			}
+			src += span; /* a redundant shift sequence? */
+		} else {
+			n += printwc(iswprint(wc) ? wc : L'?', &stdout_state);
+			src += rv;
+		}
+	}
+	return n;
+}