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 44static unsigned long long invalids; 45 46static void do_conv(FILE *, const char *, const char *, bool, bool); 47static int do_list(unsigned int, const char * const *, void *); 48static void usage(void); 49 50static 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 58static void 59usage(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) 71static void 72do_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], *out; 77 const char *in; 78 size_t inbytes, outbytes, ret; 79 80 if ((cd = iconv_open(to, from)) == (iconv_t)-1) 81 err(EXIT_FAILURE, "iconv_open(%s, %s)", to, from); 82 83 if (hide_invalid) { 84 int arg = 1; 85 86 if (iconvctl(cd, ICONV_SET_DISCARD_ILSEQ, (void *)&arg) == -1) 87 err(1, NULL); 88 } 89 while ((inbytes = fread(inbuf, 1, INBUFSIZE, fp)) > 0) { 90 in = inbuf; 91 while (inbytes > 0) { 92 size_t inval; 93 94 out = outbuf; 95 outbytes = OUTBUFSIZE; 96 ret = __iconv(cd, &in, &inbytes, &out, &outbytes, 97 0, &inval); 98 invalids += inval; 99 if (outbytes < OUTBUFSIZE) 100 (void)fwrite(outbuf, 1, OUTBUFSIZE - outbytes, 101 stdout); 102 if (ret == (size_t)-1 && errno != E2BIG) { 103 if (errno != EINVAL || in == inbuf) 104 err(EXIT_FAILURE, "iconv()"); 105 106 /* incomplete input character */ 107 (void)memmove(inbuf, in, inbytes); 108 ret = fread(inbuf + inbytes, 1, 109 INBUFSIZE - inbytes, fp); 110 if (ret == 0) { 111 fflush(stdout); 112 if (feof(fp)) 113 errx(EXIT_FAILURE, 114 "unexpected end of file; " 115 "the last character is " 116 "incomplete."); 117 else 118 err(EXIT_FAILURE, "fread()"); 119 } 120 in = inbuf; 121 inbytes += ret; 122 } 123 } 124 } 125 /* reset the shift state of the output buffer */ 126 outbytes = OUTBUFSIZE; 127 out = outbuf; 128 ret = iconv(cd, NULL, NULL, &out, &outbytes); 129 if (ret == (size_t)-1) 130 err(EXIT_FAILURE, "iconv()"); 131 if (outbytes < OUTBUFSIZE) 132 (void)fwrite(outbuf, 1, OUTBUFSIZE - outbytes, stdout); 133 134 if (invalids > 0 && !silent) 135 warnx("warning: invalid characters: %llu", invalids); 136 137 iconv_close(cd); 138} 139 140static int 141do_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 155int 156main(int argc, char **argv) 157{ 158 FILE *fp; 159 char *opt_f, *opt_t; 160 int ch, i; 161 bool opt_c = false, opt_s = false; 162 163 opt_f = opt_t = strdup(""); 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 = strdup(optarg); 190 break; 191 case 't': 192 /* to */ 193 if (optarg != NULL) 194 opt_t = strdup(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 do_conv(stdin, opt_f, opt_t, opt_s, opt_c); 206 else { 207 for (i = 0; i < argc; i++) { 208 fp = (strcmp(argv[i], "-") != 0) ? 209 fopen(argv[i], "r") : stdin; 210 if (fp == NULL) 211 err(EXIT_FAILURE, "Cannot open `%s'", 212 argv[i]); 213 do_conv(fp, opt_f, opt_t, opt_s, 214 opt_c); 215 (void)fclose(fp); 216 } 217 } 218 return (EXIT_SUCCESS); 219} 220