1 /*- 2 * Copyright (c) 2005 Poul-Henning Kamp 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 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 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 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 *q, *r; 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 i = 0; 60 if (*str == '\0') 61 i++; 62 else if (*str == '#') 63 i++; 64 else { 65 for (p = str; *p; p++) 66 if (isspace(*p) || *p == '\\' || *p == '"') 67 i++; 68 } 69 if (!i) 70 return (__printf_out(io, pi, str, strlen(str))); 71 72 q = malloc(strlen(str) * 5); 73 assert(q != NULL); 74 r = q; 75 ret = __printf_out(io, pi, "\"", 1); 76 t = str; 77 for (p = str; *p; p++) { 78 o = NULL; 79 if (*p == '\\') 80 o = "\\\\"; 81 else if (*p == '\n') 82 o = "\\n"; 83 else if (*p == '\r') 84 o = "\\r"; 85 else if (*p == '\t') 86 o = "\\t"; 87 else if (*p == ' ') 88 o = " "; 89 else if (*p == '"') 90 o = "\\\""; 91 else if (isspace(*p)) { 92 sprintf(r, "\\%03o", *p); 93 o = r; 94 r += strlen(r) + 1; 95 } else 96 continue; 97 if (p != t) { 98 ret += __printf_out(io, pi, t, p - t); 99 t = p + 1; 100 } 101 ret += __printf_out(io, pi, o, strlen(o)); 102 } 103 if (p != t) 104 ret += __printf_out(io, pi, t, p - t); 105 ret += __printf_out(io, pi, "\"", 1); 106 __printf_flush(io); 107 return(ret); 108 } 109