1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2005 Poul-Henning Kamp
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <namespace.h>
30 #include <stdio.h>
31 #include <string.h>
32 #include <stdlib.h>
33 #include <ctype.h>
34 #include <wchar.h>
35 #include <vis.h>
36 #include <assert.h>
37 #include <sys/time.h>
38 #include "printf.h"
39
40 int
__printf_arginfo_quote(const struct printf_info * pi __unused,size_t n,int * argt)41 __printf_arginfo_quote(const struct printf_info *pi __unused, size_t n, int *argt)
42 {
43
44 assert(n >= 1);
45 argt[0] = PA_POINTER;
46 return (1);
47 }
48
49 int
__printf_render_quote(struct __printf_io * io,const struct printf_info * pi __unused,const void * const * arg)50 __printf_render_quote(struct __printf_io *io, const struct printf_info *pi __unused, const void *const *arg)
51 {
52 const char *str, *p, *t, *o;
53 char r[5];
54 int i, ret;
55
56 str = *((const char *const *)arg[0]);
57 if (str == NULL)
58 return (__printf_out(io, pi, "\"(null)\"", 8));
59 if (*str == '\0')
60 return (__printf_out(io, pi, "\"\"", 2));
61
62 for (i = 0, p = str; *p; p++)
63 if (isspace(*p) || *p == '\\' || *p == '"')
64 i++;
65 if (!i)
66 return (__printf_out(io, pi, str, strlen(str)));
67
68 ret = __printf_out(io, pi, "\"", 1);
69 for (t = p = str; *p; p++) {
70 o = NULL;
71 if (*p == '\\')
72 o = "\\\\";
73 else if (*p == '\n')
74 o = "\\n";
75 else if (*p == '\r')
76 o = "\\r";
77 else if (*p == '\t')
78 o = "\\t";
79 else if (*p == ' ')
80 o = " ";
81 else if (*p == '"')
82 o = "\\\"";
83 else if (isspace(*p)) {
84 sprintf(r, "\\%03o", *p);
85 o = r;
86 } else
87 continue;
88 if (p != t)
89 ret += __printf_out(io, pi, t, p - t);
90 ret += __printf_out(io, pi, o, strlen(o));
91 t = p + 1;
92 }
93 if (p != t)
94 ret += __printf_out(io, pi, t, p - t);
95 ret += __printf_out(io, pi, "\"", 1);
96 __printf_flush(io);
97 return(ret);
98 }
99