1 /* $FreeBSD$ */ 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 int do_conv(FILE *, const char *, const char *, bool, bool); 45 static int do_list(unsigned int, const char * const *, void *); 46 static void usage(void) __dead2; 47 48 static const struct option long_options[] = { 49 {"from-code", required_argument, NULL, 'f'}, 50 {"list", no_argument, NULL, 'l'}, 51 {"silent", no_argument, NULL, 's'}, 52 {"to-code", required_argument, NULL, 't'}, 53 {NULL, no_argument, NULL, 0} 54 }; 55 56 static void 57 usage(void) 58 { 59 (void)fprintf(stderr, 60 "Usage:\t%1$s [-cs] -f <from_code> -t <to_code> [file ...]\n" 61 "\t%1$s -f <from_code> [-cs] [-t <to_code>] [file ...]\n" 62 "\t%1$s -t <to_code> [-cs] [-f <from_code>] [file ...]\n" 63 "\t%1$s -l\n", getprogname()); 64 exit(1); 65 } 66 67 #define INBUFSIZE 1024 68 #define OUTBUFSIZE (INBUFSIZE * 2) 69 static int 70 do_conv(FILE *fp, const char *from, const char *to, bool silent, 71 bool hide_invalid) 72 { 73 iconv_t cd; 74 char inbuf[INBUFSIZE], outbuf[OUTBUFSIZE], *in, *out; 75 unsigned long long invalids; 76 size_t inbytes, outbytes, ret; 77 78 if ((cd = iconv_open(to, from)) == (iconv_t)-1) 79 err(EXIT_FAILURE, "iconv_open(%s, %s)", to, from); 80 81 if (hide_invalid) { 82 int arg = 1; 83 84 if (iconvctl(cd, ICONV_SET_DISCARD_ILSEQ, (void *)&arg) == -1) 85 err(EXIT_FAILURE, NULL); 86 } 87 invalids = 0; 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 return (invalids > 0); 138 } 139 140 static int 141 do_list(unsigned int n, const char * const *list, void *data __unused) 142 { 143 unsigned int i; 144 145 for(i = 0; i < n; i++) { 146 printf("%s", list[i]); 147 if (i < n - 1) 148 printf(" "); 149 } 150 printf("\n"); 151 152 return (1); 153 } 154 155 int 156 main(int argc, char **argv) 157 { 158 FILE *fp; 159 const char *opt_f, *opt_t; 160 int ch, i, res; 161 bool opt_c = false, opt_s = false; 162 163 opt_f = opt_t = ""; 164 165 setlocale(LC_ALL, ""); 166 setprogname(argv[0]); 167 168 while ((ch = getopt_long(argc, argv, "csLlf:t:", 169 long_options, NULL)) != -1) { 170 switch (ch) { 171 case 'c': 172 opt_c = true; 173 break; 174 case 's': 175 opt_s = true; 176 break; 177 case 'l': 178 /* list */ 179 if (opt_s || opt_c || strcmp(opt_f, "") != 0 || 180 strcmp(opt_t, "") != 0) { 181 warnx("-l is not allowed with other flags."); 182 usage(); 183 } 184 iconvlist(do_list, NULL); 185 return (EXIT_SUCCESS); 186 case 'f': 187 /* from */ 188 if (optarg != NULL) 189 opt_f = optarg; 190 break; 191 case 't': 192 /* to */ 193 if (optarg != NULL) 194 opt_t = optarg; 195 break; 196 default: 197 usage(); 198 } 199 } 200 argc -= optind; 201 argv += optind; 202 if ((strcmp(opt_f, "") == 0) && (strcmp(opt_t, "") == 0)) 203 usage(); 204 if (argc == 0) 205 res = do_conv(stdin, opt_f, opt_t, opt_s, opt_c); 206 else { 207 res = 0; 208 for (i = 0; i < argc; i++) { 209 fp = (strcmp(argv[i], "-") != 0) ? 210 fopen(argv[i], "r") : stdin; 211 if (fp == NULL) 212 err(EXIT_FAILURE, "Cannot open `%s'", 213 argv[i]); 214 res |= do_conv(fp, opt_f, opt_t, opt_s, opt_c); 215 (void)fclose(fp); 216 } 217 } 218 return (res == 0 ? EXIT_SUCCESS : EXIT_FAILURE); 219 } 220