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utils-std

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

rmdir.c (2691B)

    

  1. // utils-std: Collection of commonly available Unix tools
  2. // SPDX-FileCopyrightText: 2017 Haelwenn (lanodan) Monnier <contact+utils@hacktivis.me>
  3. // SPDX-License-Identifier: MPL-2.0
  5. #define _POSIX_C_SOURCE 200809L
  6. #include <errno.h>
  7. #include <stdbool.h>
  8. #include <stdio.h>  // fprintf
  9. #include <stdlib.h> // abort
  10. #include <string.h> // strerror, strrchr
  11. #include <unistd.h> // getopt, rmdir
  12. #ifdef HAS_GETOPT_LONG
  13. #include <getopt.h>
  14. #endif
  16. static void
  17. usage(void)
  18. {
  19. #ifdef HAS_GETOPT_LONG
  20. 	fprintf(stderr, "Usage: rmdir [-pv] [--ignore-fail-on-non-empty] directory...\n");
  21. #else
  22. 	fprintf(stderr, "Usage: rmdir [-pv] directory...\n");
  23. #endif
  24. }
  26. int
  27. main(int argc, char *argv[])
  28. {
  29. 	bool parents = false, verbose = false, ign_enotempty = false;
  31. 	int c = -1;
  32. #ifdef HAS_GETOPT_LONG
  33. 	// clang-format off
  34. 	enum long_opt_vals {
  35. 		IGN_ENOTEMPTY = 1
  36. 	};
  37. 	static struct option opts[] = {
  38. 		{"ignore-fail-on-non-empty", no_argument, 0, IGN_ENOTEMPTY},
  39. 		{"parents", no_argument, 0, 'p'},
  40. 		{"verbose", no_argument, 0, 'v'},
  41. 		{0, 0, 0, 0},
  42. 	};
  43. 	// clang-format on
  45. 	// Need + as first character to get POSIX-style option parsing
  46. 	while((c = getopt_long(argc, argv, "+:pv", opts, NULL)) != -1)
  47. #else
  48. 	while((c = getopt(argc, argv, ":pv")) != -1)
  49. #endif
  50. 	{
  51. 		switch(c)
  52. 		{
  53. #ifdef HAS_GETOPT_LONG
  54. 		case IGN_ENOTEMPTY:
  55. 			ign_enotempty = true;
  56. 			break;
  57. #endif
  58. 		case 'p':
  59. 			parents = true;
  60. 			break;
  61. 		case 'v':
  62. 			verbose = true;
  63. 			break;
  64. 		case ':':
  65. 			fprintf(stderr, "rmdir: error: Missing operand for option: '-%c'\n", optopt);
  66. 			usage();
  67. 			return 1;
  68. 		case '?':
  69. 			fprintf(stderr, "rmdir: error: Unrecognised option: '-%c'\n", optopt);
  70. 			usage();
  71. 			return 1;
  72. 		default:
  73. 			abort();
  74. 		}
  75. 	}
  77. 	argc -= optind;
  78. 	argv += optind;
  80. 	if(argc == 0)
  81. 	{
  82. 		fprintf(stderr, "rmdir: error: missing operand\n");
  83. 		usage();
  84. 		return 1;
  85. 	}
  87. 	int err = 0;
  89. 	for(int i = 0; i < argc; i++)
  90. 	{
  91. 		errno = 0;
  93. 		char *path = argv[i];
  94. 		if(rmdir(path) < 0)
  95. 		{
  96. 			if(ign_enotempty && (errno == ENOTEMPTY || errno == EEXIST)) continue;
  98. 			fprintf(stderr, "rmdir: error: Failed removing '%s': %s\n", path, strerror(errno));
  99. 			err = 1;
  100. 			continue;
  101. 		}
  102. 		if(verbose) fprintf(stderr, "rmdir: Removed '%s'\n", path);
  104. 		if(!parents) continue;
  106. 		while(true)
  107. 		{
  108. 			char *sep = strrchr(path, '/');
  109. 			if(sep == NULL) break;
  111. 			*sep = 0;
  113. 			if(*path == 0) break;
  115. 			errno = 0;
  116. 			if(rmdir(path) < 0)
  117. 			{
  118. 				if(errno == ENOTDIR) break;
  119. 				if(ign_enotempty && (errno == ENOTEMPTY || errno == EEXIST)) break;
  121. 				fprintf(stderr, "rmdir: error: Failed removing '%s': %s\n", path, strerror(errno));
  122. 				err = 1;
  123. 				break;
  124. 			}
  125. 			if(verbose) fprintf(stderr, "rmdir: Removed '%s'\n", path);
  126. 		}
  127. 	}
  129. 	return err;
  130. }