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utils-std

Collection of commonly available Unix tools git clone https://anongit.hacktivis.me/git/utils-std.git

tr.c (7223B)


  1. // SPDX-License-Identifier: BSD-3-Clause
  2. /* $OpenBSD: tr.c,v 1.22 2022/12/04 23:50:49 cheloha Exp $ */
  3. /* $NetBSD: tr.c,v 1.5 1995/08/31 22:13:48 jtc Exp $ */
  4. /*
  5. * Copyright (c) 1988, 1993
  6. * The Regents of the University of California. 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. * 3. Neither the name of the University nor the names of its contributors
  17. * may be used to endorse or promote products derived from this software
  18. * without specific prior written permission.
  19. *
  20. * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23. * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30. * SUCH DAMAGE.
  31. */
  32. #define _DEFAULT_SOURCE
  33. #include "../lib/tr_str.h"
  34. #include <err.h>
  35. #include <stdio.h>
  36. #include <stdlib.h>
  37. #include <string.h>
  38. #include <strings.h> // bzero
  39. #include <sys/types.h>
  40. #include <unistd.h>
  41. int delete[NCHARS], squeeze[NCHARS];
  42. int translate[NCHARS] = {
  43. 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* ASCII */
  44. 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
  45. 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
  46. 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
  47. 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
  48. 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
  49. 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
  50. 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
  51. 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
  52. 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
  53. 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
  54. 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
  55. 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
  56. 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
  57. 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
  58. 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
  59. 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
  60. };
  61. STR s1 = {STRING1, NORMAL, 0, OOBCH, {0, OOBCH}, NULL, NULL};
  62. STR s2 = {STRING2, NORMAL, 0, OOBCH, {0, OOBCH}, NULL, NULL};
  63. const char *argv0 = "tr";
  64. static void setup(int *, char *, STR *, int);
  65. static void usage(void);
  66. int
  67. main(int argc, char *argv[])
  68. {
  69. int ch, cnt, lastch, *p;
  70. int cflag, dflag, sflag;
  71. cflag = dflag = sflag = 0;
  72. while((ch = getopt(argc, argv, "Ccds")) != -1)
  73. {
  74. switch(ch)
  75. {
  76. case 'C':
  77. case 'c':
  78. cflag = 1;
  79. break;
  80. case 'd':
  81. dflag = 1;
  82. break;
  83. case 's':
  84. sflag = 1;
  85. break;
  86. case ':':
  87. fprintf(stderr, "%s: error: Option '-%c' requires an operand\n", argv0, optopt);
  88. usage();
  89. return 1;
  90. case '?':
  91. fprintf(stderr, "%s: error: Unhandled option '-%c'\n", argv0, optopt);
  92. usage();
  93. return 1;
  94. default:
  95. fprintf(stderr, "%s: error: Unhandled getopt case '%c'\n", argv0, ch);
  96. usage();
  97. abort();
  98. }
  99. }
  100. argc -= optind;
  101. argv += optind;
  102. if(argc < 1 || argc > 2) usage();
  103. /*
  104. * tr -ds [-Cc] string1 string2
  105. * Delete all characters (or complemented characters) in string1.
  106. * Squeeze all characters in string2.
  107. */
  108. if(dflag && sflag)
  109. {
  110. if(argc != 2) usage();
  111. setup(delete, argv[0], &s1, cflag);
  112. setup(squeeze, argv[1], &s2, 0);
  113. for(lastch = OOBCH; (ch = getchar()) != EOF;)
  114. if(!delete[ch] && (!squeeze[ch] || lastch != ch))
  115. {
  116. lastch = ch;
  117. (void)putchar(ch);
  118. }
  119. exit(0);
  120. }
  121. /*
  122. * tr -d [-Cc] string1
  123. * Delete all characters (or complemented characters) in string1.
  124. */
  125. if(dflag)
  126. {
  127. if(argc != 1) usage();
  128. setup(delete, argv[0], &s1, cflag);
  129. while((ch = getchar()) != EOF)
  130. if(!delete[ch]) (void)putchar(ch);
  131. exit(0);
  132. }
  133. /*
  134. * tr -s [-Cc] string1
  135. * Squeeze all characters (or complemented characters) in string1.
  136. */
  137. if(sflag && argc == 1)
  138. {
  139. setup(squeeze, argv[0], &s1, cflag);
  140. for(lastch = OOBCH; (ch = getchar()) != EOF;)
  141. if(!squeeze[ch] || lastch != ch)
  142. {
  143. lastch = ch;
  144. (void)putchar(ch);
  145. }
  146. exit(0);
  147. }
  148. /*
  149. * tr [-Ccs] string1 string2
  150. * Replace all characters (or complemented characters) in string1 with
  151. * the character in the same position in string2. If the -s option is
  152. * specified, squeeze all the characters in string2.
  153. */
  154. if(argc != 2) usage();
  155. s1.str = (unsigned char *)argv[0];
  156. s2.str = (unsigned char *)argv[1];
  157. if(cflag)
  158. for(cnt = NCHARS, p = translate; cnt--;)
  159. *p++ = OOBCH;
  160. if(!next(&s2)) errx(1, "error: empty string2");
  161. /* If string2 runs out of characters, use the last one specified. */
  162. ch = s2.lastch;
  163. if(sflag)
  164. while(next(&s1))
  165. {
  166. translate[s1.lastch] = ch = s2.lastch;
  167. squeeze[ch] = 1;
  168. (void)next(&s2);
  169. }
  170. else
  171. while(next(&s1))
  172. {
  173. translate[s1.lastch] = ch = s2.lastch;
  174. (void)next(&s2);
  175. }
  176. if(cflag)
  177. for(cnt = 0, p = translate; cnt < NCHARS; ++p, ++cnt)
  178. *p = *p == OOBCH ? ch : cnt;
  179. if(sflag)
  180. for(lastch = OOBCH; (ch = getchar()) != EOF;)
  181. {
  182. ch = translate[ch];
  183. if(!squeeze[ch] || lastch != ch)
  184. {
  185. lastch = ch;
  186. (void)putchar(ch);
  187. }
  188. }
  189. else
  190. while((ch = getchar()) != EOF)
  191. (void)putchar(translate[ch]);
  192. exit(0);
  193. }
  194. static void
  195. setup(int *table, char *arg, STR *str, int cflag)
  196. {
  197. int cnt, *p;
  198. str->str = (unsigned char *)arg;
  199. bzero(table, NCHARS * sizeof(int));
  200. while(next(str))
  201. table[str->lastch] = 1;
  202. if(cflag)
  203. for(p = table, cnt = NCHARS; cnt--; ++p)
  204. *p = !*p;
  205. }
  206. static void
  207. usage(void)
  208. {
  209. fprintf(stderr,
  210. "usage: tr [-Ccs] string1 string2\n"
  211. " tr [-Cc] -d string1\n"
  212. " tr [-Cc] -s string1\n"
  213. " tr [-Cc] -ds string1 string2\n");
  214. exit(1);
  215. }