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: src/lib/libc/stdio/xprintf_quote.c,v 1.2 2006/03/02 08:53:45 phk Exp $ 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 "un-namespace.h" 39 #include "printf.h" 40 41 int 42 __printf_arginfo_quote(const struct printf_info *pi __unused, size_t n, 43 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, 53 const struct printf_info *pi __unused, 54 const void *const *arg) 55 { 56 const char *str, *p, *t, *o; 57 char r[5]; 58 int i, ret; 59 60 str = *((const char *const *)arg[0]); 61 if (str == NULL) 62 return (__printf_out(io, pi, "\"(null)\"", 8)); 63 if (*str == '\0') 64 return (__printf_out(io, pi, "\"\"", 2)); 65 66 for (i = 0, p = str; *p; p++) 67 if (isspace(*p) || *p == '\\' || *p == '"') 68 i++; 69 if (!i) 70 return (__printf_out(io, pi, str, strlen(str))); 71 72 ret = __printf_out(io, pi, "\"", 1); 73 for (t = p = str; *p; p++) { 74 o = NULL; 75 if (*p == '\\') 76 o = "\\\\"; 77 else if (*p == '\n') 78 o = "\\n"; 79 else if (*p == '\r') 80 o = "\\r"; 81 else if (*p == '\t') 82 o = "\\t"; 83 else if (*p == ' ') 84 o = " "; 85 else if (*p == '"') 86 o = "\\\""; 87 else if (isspace(*p)) { 88 sprintf(r, "\\%03o", *p); 89 o = r; 90 } else { 91 continue; 92 } 93 if (p != t) 94 ret += __printf_out(io, pi, t, p - t); 95 ret += __printf_out(io, pi, o, strlen(o)); 96 t = p + 1; 97 } 98 if (p != t) 99 ret += __printf_out(io, pi, t, p - t); 100 ret += __printf_out(io, pi, "\"", 1); 101 __printf_flush(io); 102 return(ret); 103 } 104