1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 * $FreeBSD$ 29 */ 30 31 #include <namespace.h> 32 #include <stdio.h> 33 #include <string.h> 34 #include <stdlib.h> 35 #include <ctype.h> 36 #include <wchar.h> 37 #include <vis.h> 38 #include <assert.h> 39 #include <sys/time.h> 40 #include "printf.h" 41 42 int 43 __printf_arginfo_quote(const struct printf_info *pi __unused, size_t n, int *argt) 44 { 45 46 assert(n >= 1); 47 argt[0] = PA_POINTER; 48 return (1); 49 } 50 51 int 52 __printf_render_quote(struct __printf_io *io, const struct printf_info *pi __unused, const void *const *arg) 53 { 54 const char *str, *p, *t, *o; 55 char r[5]; 56 int i, ret; 57 58 str = *((const char *const *)arg[0]); 59 if (str == NULL) 60 return (__printf_out(io, pi, "\"(null)\"", 8)); 61 if (*str == '\0') 62 return (__printf_out(io, pi, "\"\"", 2)); 63 64 for (i = 0, p = str; *p; p++) 65 if (isspace(*p) || *p == '\\' || *p == '"') 66 i++; 67 if (!i) 68 return (__printf_out(io, pi, str, strlen(str))); 69 70 ret = __printf_out(io, pi, "\"", 1); 71 for (t = p = str; *p; p++) { 72 o = NULL; 73 if (*p == '\\') 74 o = "\\\\"; 75 else if (*p == '\n') 76 o = "\\n"; 77 else if (*p == '\r') 78 o = "\\r"; 79 else if (*p == '\t') 80 o = "\\t"; 81 else if (*p == ' ') 82 o = " "; 83 else if (*p == '"') 84 o = "\\\""; 85 else if (isspace(*p)) { 86 sprintf(r, "\\%03o", *p); 87 o = r; 88 } else 89 continue; 90 if (p != t) 91 ret += __printf_out(io, pi, t, p - t); 92 ret += __printf_out(io, pi, o, strlen(o)); 93 t = p + 1; 94 } 95 if (p != t) 96 ret += __printf_out(io, pi, t, p - t); 97 ret += __printf_out(io, pi, "\"", 1); 98 __printf_flush(io); 99 return(ret); 100 } 101