1 /* $FreeBSD: head/usr.bin/iconv/iconv.c 252583 2013-07-03 18:27:45Z peter $ */ 2 /* $NetBSD: iconv.c,v 1.16 2009/02/20 15:28:21 yamt Exp $ */ 3 4 /*- 5 * Copyright (c)2003 Citrus Project, 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 32 #include <err.h> 33 #include <errno.h> 34 #include <getopt.h> 35 #include <iconv.h> 36 #include <limits.h> 37 #include <locale.h> 38 #include <stdbool.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <unistd.h> 43 44 static unsigned long long invalids; 45 46 static void do_conv(FILE *, const char *, const char *, bool, bool); 47 static int do_list(unsigned int, const char * const *, void *); 48 static void usage(void); 49 50 static struct option long_options[] = { 51 {"from-code", required_argument, NULL, 'f'}, 52 {"list", no_argument, NULL, 'l'}, 53 {"silent", no_argument, NULL, 's'}, 54 {"to-code", required_argument, NULL, 't'}, 55 {NULL, no_argument, NULL, 0} 56 }; 57 58 static void 59 usage(void) 60 { 61 (void)fprintf(stderr, 62 "Usage:\t%1$s [-cs] -f <from_code> -t <to_code> [file ...]\n" 63 "\t%1$s -f <from_code> [-cs] [-t <to_code>] [file ...]\n" 64 "\t%1$s -t <to_code> [-cs] [-f <from_code>] [file ...]\n" 65 "\t%1$s -l\n", getprogname()); 66 exit(1); 67 } 68 69 #define INBUFSIZE 1024 70 #define OUTBUFSIZE (INBUFSIZE * 2) 71 static void 72 do_conv(FILE *fp, const char *from, const char *to, bool silent, 73 bool hide_invalid) 74 { 75 iconv_t cd; 76 char inbuf[INBUFSIZE], outbuf[OUTBUFSIZE], *in, *out; 77 size_t inbytes, outbytes, ret; 78 79 if ((cd = iconv_open(to, from)) == (iconv_t)-1) 80 err(EXIT_FAILURE, "iconv_open(%s, %s)", to, from); 81 82 if (hide_invalid) { 83 int arg = 1; 84 85 if (iconvctl(cd, ICONV_SET_DISCARD_ILSEQ, (void *)&arg) == -1) 86 err(1, NULL); 87 } 88 while ((inbytes = fread(inbuf, 1, INBUFSIZE, fp)) > 0) { 89 in = inbuf; 90 while (inbytes > 0) { 91 size_t inval; 92 93 out = outbuf; 94 outbytes = OUTBUFSIZE; 95 ret = __iconv(cd, &in, &inbytes, &out, &outbytes, 96 0, &inval); 97 invalids += inval; 98 if (outbytes < OUTBUFSIZE) 99 (void)fwrite(outbuf, 1, OUTBUFSIZE - outbytes, 100 stdout); 101 if (ret == (size_t)-1 && errno != E2BIG) { 102 if (errno != EINVAL || in == inbuf) 103 err(EXIT_FAILURE, "iconv()"); 104 105 /* incomplete input character */ 106 (void)memmove(inbuf, in, inbytes); 107 ret = fread(inbuf + inbytes, 1, 108 INBUFSIZE - inbytes, fp); 109 if (ret == 0) { 110 fflush(stdout); 111 if (feof(fp)) 112 errx(EXIT_FAILURE, 113 "unexpected end of file; " 114 "the last character is " 115 "incomplete."); 116 else 117 err(EXIT_FAILURE, "fread()"); 118 } 119 in = inbuf; 120 inbytes += ret; 121 } 122 } 123 } 124 /* reset the shift state of the output buffer */ 125 outbytes = OUTBUFSIZE; 126 out = outbuf; 127 ret = iconv(cd, NULL, NULL, &out, &outbytes); 128 if (ret == (size_t)-1) 129 err(EXIT_FAILURE, "iconv()"); 130 if (outbytes < OUTBUFSIZE) 131 (void)fwrite(outbuf, 1, OUTBUFSIZE - outbytes, stdout); 132 133 if (invalids > 0 && !silent) 134 warnx("warning: invalid characters: %llu", invalids); 135 136 iconv_close(cd); 137 } 138 139 static int 140 do_list(unsigned int n, const char * const *list, void *data __unused) 141 { 142 unsigned int i; 143 144 for(i = 0; i < n; i++) { 145 printf("%s", list[i]); 146 if (i < n - 1) 147 printf(" "); 148 } 149 printf("\n"); 150 151 return (1); 152 } 153 154 int 155 main(int argc, char **argv) 156 { 157 FILE *fp; 158 char *opt_f, *opt_t; 159 int ch, i; 160 bool opt_c = false, opt_s = false; 161 162 opt_f = opt_t = strdup(""); 163 164 setlocale(LC_ALL, ""); 165 setprogname(argv[0]); 166 167 while ((ch = getopt_long(argc, argv, "csLlf:t:", 168 long_options, NULL)) != -1) { 169 switch (ch) { 170 case 'c': 171 opt_c = true; 172 break; 173 case 's': 174 opt_s = true; 175 break; 176 case 'l': 177 /* list */ 178 if (opt_s || opt_c || strcmp(opt_f, "") != 0 || 179 strcmp(opt_t, "") != 0) { 180 warnx("-l is not allowed with other flags."); 181 usage(); 182 } 183 iconvlist(do_list, NULL); 184 return (EXIT_SUCCESS); 185 case 'f': 186 /* from */ 187 if (optarg != NULL) 188 opt_f = strdup(optarg); 189 break; 190 case 't': 191 /* to */ 192 if (optarg != NULL) 193 opt_t = strdup(optarg); 194 break; 195 default: 196 usage(); 197 } 198 } 199 argc -= optind; 200 argv += optind; 201 if ((strcmp(opt_f, "") == 0) && (strcmp(opt_t, "") == 0)) 202 usage(); 203 if (argc == 0) 204 do_conv(stdin, opt_f, opt_t, opt_s, opt_c); 205 else { 206 for (i = 0; i < argc; i++) { 207 fp = (strcmp(argv[i], "-") != 0) ? 208 fopen(argv[i], "r") : stdin; 209 if (fp == NULL) 210 err(EXIT_FAILURE, "Cannot open `%s'", 211 argv[i]); 212 do_conv(fp, opt_f, opt_t, opt_s, 213 opt_c); 214 (void)fclose(fp); 215 } 216 } 217 return (EXIT_SUCCESS); 218 } 219