From 92773d860f94323c14cc8c1b27436f2e73a174fd Mon Sep 17 00:00:00 2001 From: Sergey Poznyakoff Date: Wed, 16 Sep 2009 11:52:34 +0300 Subject: [PATCH] Restore extra help output. * src/tar.c (tar_list_quoting_styles): Change first argument to struct obstack. (format_default_settings): New function. (show_default_settings) (show_default_settings_fs): Removed. (tar_help): Removed. (tar_help_filter): New function. (argp): Set help_filter. (parse_opt): Fix error message. --- gnulib.modules | 1 + src/tar.c | 369 +++++++++++++++++++++++++------------------------ 2 files changed, 187 insertions(+), 183 deletions(-) diff --git a/gnulib.modules b/gnulib.modules index d5ebce5..bf5aeca 100644 --- a/gnulib.modules +++ b/gnulib.modules @@ -5,6 +5,7 @@ alloca argmatch argp argp-version-etc +asprintf backupfile canonicalize closeout diff --git a/src/tar.c b/src/tar.c index d4fda6f..e3300fb 100644 --- a/src/tar.c +++ b/src/tar.c @@ -220,12 +220,18 @@ subcommand_string (enum subcommand c) } void -tar_list_quoting_styles (argp_fmtstream_t fs, char *prefix) +tar_list_quoting_styles (struct obstack *stk, char *prefix) { int i; - + size_t prefixlen = strlen (prefix); + for (i = 0; quoting_style_args[i]; i++) - argp_fmtstream_printf (fs, "%s%s\n", prefix, quoting_style_args[i]); + { + obstack_grow (stk, prefix, prefixlen); + obstack_grow (stk, quoting_style_args[i], + strlen (quoting_style_args[i])); + obstack_1grow (stk, '\n'); + } } void @@ -894,39 +900,29 @@ add_exclude_array (char const * const * fv) } +static char * +format_default_settings (void) +{ + char *s; + + asprintf (&s, + "--format=%s -f%s -b%d --quoting-style=%s --rmt-command=%s" #ifdef REMOTE_SHELL -# define DECL_SHOW_DEFAULT_SETTINGS(stream, printer) \ -{ \ - printer (stream, \ - "--format=%s -f%s -b%d --quoting-style=%s --rmt-command=%s", \ - archive_format_string (DEFAULT_ARCHIVE_FORMAT), \ - DEFAULT_ARCHIVE, DEFAULT_BLOCKING, \ - quoting_style_args[DEFAULT_QUOTING_STYLE], \ - DEFAULT_RMT_COMMAND); \ - printer (stream, " --rsh-command=%s", REMOTE_SHELL); \ - printer (stream, "\n"); \ -} -#else -# define DECL_SHOW_DEFAULT_SETTINGS(stream, printer) \ -{ \ - printer (stream, \ - "--format=%s -f%s -b%d --quoting-style=%s --rmt-command=%s", \ - archive_format_string (DEFAULT_ARCHIVE_FORMAT), \ - DEFAULT_ARCHIVE, DEFAULT_BLOCKING, \ - quoting_style_args[DEFAULT_QUOTING_STYLE], \ - DEFAULT_RMT_COMMAND); \ - printer (stream, "\n"); \ -} + " --rsh-command=%s" #endif + , + archive_format_string (DEFAULT_ARCHIVE_FORMAT), + DEFAULT_ARCHIVE, DEFAULT_BLOCKING, + quoting_style_args[DEFAULT_QUOTING_STYLE], + DEFAULT_RMT_COMMAND, +#ifdef REMOTE_SHELL + REMOTE_SHELL +#endif + ); + return s; +} -static void -show_default_settings (FILE *fp) - DECL_SHOW_DEFAULT_SETTINGS(fp, fprintf) - -static void -show_default_settings_fs (argp_fmtstream_t fs) - DECL_SHOW_DEFAULT_SETTINGS(fs, argp_fmtstream_printf) - + static void set_subcommand_option (enum subcommand subcommand) { @@ -934,7 +930,7 @@ set_subcommand_option (enum subcommand subcommand) && subcommand_option != subcommand) USAGE_ERROR ((0, 0, _("You may not specify more than one `-Acdtrux' option"))); - + subcommand_option = subcommand; } @@ -944,7 +940,7 @@ set_use_compress_program_option (const char *string) if (use_compress_program_option && strcmp (use_compress_program_option, string) != 0) USAGE_ERROR ((0, 0, _("Conflicting compression options"))); - + use_compress_program_option = string; } @@ -1096,7 +1092,7 @@ read_name_from_file (FILE *fp, struct obstack *stk, int term) obstack_1grow (stk, c); counter++; } - + if (counter == 0 && c != EOF) return file_list_skip; @@ -1180,7 +1176,7 @@ update_argv (const char *filename, struct argp_state *state) if ((fp = fopen (filename, "r")) == NULL) open_fatal (filename); } - + while ((read_state = read_name_from_file (fp, &argv_stk, term)) != file_list_end) { @@ -1189,18 +1185,18 @@ update_argv (const char *filename, struct argp_state *state) case file_list_success: count++; break; - + case file_list_end: /* won't happen, just to pacify gcc */ break; - + case file_list_zero: { size_t size; - + WARNOPT (WARN_FILENAME_WITH_NULS, (0, 0, N_("%s: file name read contains nul character"), quotearg_colon (filename))); - + /* Prepare new stack contents */ size = obstack_object_size (&argv_stk); p = obstack_finish (&argv_stk); @@ -1215,34 +1211,34 @@ update_argv (const char *filename, struct argp_state *state) term = 0; break; } - + case file_list_skip: break; } } - + if (!is_stdin) fclose (fp); - + if (count == 0) return; - + start = obstack_finish (&argv_stk); - + if (term == 0) for (p = start; *p; p += strlen (p) + 1) if (p[0] == '-') count++; - + new_argc = state->argc + count; new_argv = xmalloc (sizeof (state->argv[0]) * (new_argc + 1)); memcpy (new_argv, state->argv, sizeof (state->argv[0]) * (state->argc + 1)); state->argv = new_argv; memmove (&state->argv[state->next + count], &state->argv[state->next], (state->argc - state->next + 1) * sizeof (state->argv[0])); - + state->argc = new_argc; - + for (i = state->next, p = start; *p; p += strlen (p) + 1, i++) { if (term == 0 && p[0] == '-') @@ -1252,26 +1248,29 @@ update_argv (const char *filename, struct argp_state *state) } -static void -tar_help (struct argp_state *state) +static char * +tar_help_filter (int key, const char *text, void *input) { - argp_fmtstream_t fs; - state->flags |= ARGP_NO_EXIT; - argp_state_help (state, state->out_stream, - ARGP_HELP_STD_HELP & ~ARGP_HELP_BUG_ADDR); - /* FIXME: use struct uparams.rmargin (from argp-help.c) instead of 79 */ - fs = argp_make_fmtstream (state->out_stream, 0, 79, 0); - - argp_fmtstream_printf (fs, "\n%s\n\n", - _("Valid arguments for --quoting-style options are:")); - tar_list_quoting_styles (fs, " "); - - argp_fmtstream_puts (fs, _("\n*This* tar defaults to:\n")); - show_default_settings_fs (fs); - argp_fmtstream_putc (fs, '\n'); - argp_fmtstream_printf (fs, _("Report bugs to %s.\n"), - argp_program_bug_address); - argp_fmtstream_free (fs); + struct obstack stk; + char *s; + + if (key != ARGP_KEY_HELP_EXTRA) + return (char*) text; + + obstack_init (&stk); + s = _("Valid arguments for the --quoting-style option are:"); + obstack_grow (&stk, s, strlen (s)); + obstack_grow (&stk, "\n\n", 2); + tar_list_quoting_styles (&stk, " "); + s = _("\n*This* tar defaults to:\n"); + obstack_grow (&stk, s, strlen (s)); + s = format_default_settings (); + obstack_grow (&stk, s, strlen (s)); + obstack_1grow (&stk, '\n'); + obstack_1grow (&stk, 0); + s = xstrdup (obstack_finish (&stk)); + obstack_free (&stk, NULL); + return s; } static error_t @@ -1286,15 +1285,15 @@ parse_opt (int key, char *arg, struct argp_state *state) name_add_name (arg, MAKE_INCL_OPTIONS (args)); args->input_files = true; break; - + case 'A': set_subcommand_option (CAT_SUBCOMMAND); break; - + case 'a': args->compress_autodetect = true; break; - + case NO_AUTO_COMPRESS_OPTION: args->compress_autodetect = false; break; @@ -1310,65 +1309,65 @@ parse_opt (int key, char *arg, struct argp_state *state) _("Invalid blocking factor"))); } break; - + case 'B': /* Try to reblock input records. For reading 4.2BSD pipes. */ - + /* It would surely make sense to exchange -B and -R, but it seems that -B has been used for a long while in Sun tar and most BSD-derived systems. This is a consequence of the block/record terminology confusion. */ - + read_full_records_option = true; break; - + case 'c': set_subcommand_option (CREATE_SUBCOMMAND); break; - + case 'C': name_add_dir (arg); break; - + case 'd': set_subcommand_option (DIFF_SUBCOMMAND); break; - + case 'f': if (archive_names == allocated_archive_names) archive_name_array = x2nrealloc (archive_name_array, &allocated_archive_names, sizeof (archive_name_array[0])); - + archive_name_array[archive_names++] = arg; break; - + case 'F': /* Since -F is only useful with -M, make it implied. Run this script at the end of each tape. */ - + info_script_option = arg; multi_volume_option = true; break; - + case 'g': listed_incremental_option = arg; after_date_option = true; /* Fall through. */ - + case 'G': /* We are making an incremental dump (FIXME: are we?); save directories at the beginning of the archive, and include in each directory its contents. */ - + incremental_option = true; break; - + case 'h': /* Follow symbolic links. */ dereference_option = true; break; - + case HARD_DEREFERENCE_OPTION: hard_dereference_option = true; break; @@ -1377,14 +1376,14 @@ parse_opt (int key, char *arg, struct argp_state *state) /* Ignore zero blocks (eofs). This can't be the default, because Unix tar writes two blocks of zeros, then pads out the record with garbage. */ - + ignore_zeros_option = true; break; - + case 'j': set_use_compress_program_option ("bzip2"); break; - + case 'J': set_use_compress_program_option ("xz"); break; @@ -1393,22 +1392,22 @@ parse_opt (int key, char *arg, struct argp_state *state) /* Don't replace existing files. */ old_files_option = KEEP_OLD_FILES; break; - + case 'K': starting_file_option = true; addname (arg, 0, true, NULL); break; - + case ONE_FILE_SYSTEM_OPTION: /* When dumping directories, don't dump files/subdirectories that are on other filesystems. */ one_file_system_option = true; break; - + case 'l': check_links_option = 1; break; - + case 'L': { uintmax_t u; @@ -1419,7 +1418,7 @@ parse_opt (int key, char *arg, struct argp_state *state) multi_volume_option = true; } break; - + case LEVEL_OPTION: { char *p; @@ -1440,23 +1439,23 @@ parse_opt (int key, char *arg, struct argp_state *state) case 'm': touch_option = true; break; - + case 'M': /* Make multivolume archive: when we can't write any more into the archive, re-open it, and continue writing. */ - + multi_volume_option = true; break; - + case MTIME_OPTION: get_date_or_file (args, "--mtime", arg, &mtime_option); set_mtime_option = true; break; - + case 'n': seek_option = 1; break; - + case NO_SEEK_OPTION: seek_option = 0; break; @@ -1464,56 +1463,56 @@ parse_opt (int key, char *arg, struct argp_state *state) case 'N': after_date_option = true; /* Fall through. */ - + case NEWER_MTIME_OPTION: if (NEWER_OPTION_INITIALIZED (newer_mtime_option)) USAGE_ERROR ((0, 0, _("More than one threshold date"))); get_date_or_file (args, key == NEWER_MTIME_OPTION ? "--newer-mtime" - : "--after-date", arg, &newer_mtime_option); + : "--after-date", arg, &newer_mtime_option); break; - + case 'o': args->o_option = true; break; - + case 'O': to_stdout_option = true; break; - + case 'p': same_permissions_option = true; break; - + case 'P': absolute_names_option = true; break; - + case 'r': set_subcommand_option (APPEND_SUBCOMMAND); break; - + case 'R': /* Print block numbers for debugging bad tar archives. */ - + /* It would surely make sense to exchange -B and -R, but it seems that -B has been used for a long while in Sun tar and most BSD-derived systems. This is a consequence of the block/record terminology confusion. */ - + block_number_option = true; break; - + case 's': /* Names to extract are sorted. */ - + same_order_option = true; break; - + case 'S': sparse_option = true; break; - + case SPARSE_VERSION_OPTION: sparse_option = true; { @@ -1529,17 +1528,17 @@ parse_opt (int key, char *arg, struct argp_state *state) } } break; - + case 't': set_subcommand_option (LIST_SUBCOMMAND); verbose_option++; break; - + case TEST_LABEL_OPTION: set_subcommand_option (LIST_SUBCOMMAND); test_label_option = true; break; - + case 'T': update_argv (arg, state); /* Indicate we've been given -T option. This is for backward @@ -1547,40 +1546,40 @@ parse_opt (int key, char *arg, struct argp_state *state) succeed */ files_from_option = true; break; - + case 'u': set_subcommand_option (UPDATE_SUBCOMMAND); break; - + case 'U': old_files_option = UNLINK_FIRST_OLD_FILES; break; - + case UTC_OPTION: utc_option = true; break; - + case 'v': verbose_option++; warning_option |= WARN_VERBOSE_WARNINGS; break; - + case 'V': volume_label_option = arg; break; - + case 'w': interactive_option = true; break; - + case 'W': verify_option = true; break; - + case 'x': set_subcommand_option (EXTRACT_SUBCOMMAND); break; - + case 'X': if (add_exclude_file (add_exclude, excluded, arg, MAKE_EXCL_OPTIONS (args), '\n') @@ -1590,19 +1589,19 @@ parse_opt (int key, char *arg, struct argp_state *state) FATAL_ERROR ((0, e, "%s", quotearg_colon (arg))); } break; - + case 'z': set_use_compress_program_option ("gzip"); break; - + case 'Z': set_use_compress_program_option ("compress"); break; - + case ANCHORED_OPTION: args->matching_flags |= EXCLUDE_ANCHORED; break; - + case ATIME_PRESERVE_OPTION: atime_preserve_option = (arg @@ -1614,7 +1613,7 @@ parse_opt (int key, char *arg, struct argp_state *state) _("--atime-preserve='system' is not supported" " on this platform"))); break; - + case CHECK_DEVICE_OPTION: check_device_option = true; break; @@ -1627,7 +1626,7 @@ parse_opt (int key, char *arg, struct argp_state *state) if (arg) { char *p; - + if (*arg == '.') { checkpoint_compile_action ("."); @@ -1641,7 +1640,7 @@ parse_opt (int key, char *arg, struct argp_state *state) else checkpoint_option = DEFAULT_CHECKPOINT; break; - + case CHECKPOINT_ACTION_OPTION: checkpoint_compile_action (arg); break; @@ -1651,19 +1650,19 @@ parse_opt (int key, char *arg, struct argp_state *state) if (arg) args->version_control_string = arg; break; - + case DELAY_DIRECTORY_RESTORE_OPTION: delay_directory_restore_option = true; break; - + case NO_DELAY_DIRECTORY_RESTORE_OPTION: delay_directory_restore_option = false; break; - + case DELETE_OPTION: set_subcommand_option (DELETE_SUBCOMMAND); break; - + case EXCLUDE_BACKUPS_OPTION: add_exclude_array (backup_file_table); break; @@ -1671,34 +1670,34 @@ parse_opt (int key, char *arg, struct argp_state *state) case EXCLUDE_OPTION: add_exclude (excluded, arg, MAKE_EXCL_OPTIONS (args)); break; - + case EXCLUDE_CACHES_OPTION: add_exclusion_tag ("CACHEDIR.TAG", exclusion_tag_contents, cachedir_file_p); break; - + case EXCLUDE_CACHES_UNDER_OPTION: add_exclusion_tag ("CACHEDIR.TAG", exclusion_tag_under, cachedir_file_p); break; - + case EXCLUDE_CACHES_ALL_OPTION: add_exclusion_tag ("CACHEDIR.TAG", exclusion_tag_all, cachedir_file_p); break; - + case EXCLUDE_TAG_OPTION: add_exclusion_tag (arg, exclusion_tag_contents, NULL); break; - + case EXCLUDE_TAG_UNDER_OPTION: add_exclusion_tag (arg, exclusion_tag_under, NULL); break; - + case EXCLUDE_TAG_ALL_OPTION: add_exclusion_tag (arg, exclusion_tag_all, NULL); break; - + case EXCLUDE_VCS_OPTION: add_exclude_array (vcs_file_table); break; @@ -1706,31 +1705,31 @@ parse_opt (int key, char *arg, struct argp_state *state) case FORCE_LOCAL_OPTION: force_local_option = true; break; - + case 'H': set_archive_format (arg); break; - + case INDEX_FILE_OPTION: index_file_name = arg; break; - + case IGNORE_CASE_OPTION: args->matching_flags |= FNM_CASEFOLD; break; - + case IGNORE_COMMAND_ERROR_OPTION: ignore_command_error_option = true; break; - + case IGNORE_FAILED_READ_OPTION: ignore_failed_read_option = true; break; - + case KEEP_NEWER_FILES_OPTION: old_files_option = KEEP_NEWER_FILES; break; - + case GROUP_OPTION: if (! (strlen (arg) < GNAME_FIELD_SIZE && gname_to_gid (arg, &group_option))) @@ -1741,10 +1740,10 @@ parse_opt (int key, char *arg, struct argp_state *state) group_option = g; else FATAL_ERROR ((0, 0, "%s: %s", quotearg_colon (arg), - _("%s: Invalid group"))); + _("Invalid group"))); } break; - + case MODE_OPTION: mode_option = mode_compile (arg); if (!mode_option) @@ -1752,49 +1751,49 @@ parse_opt (int key, char *arg, struct argp_state *state) initial_umask = umask (0); umask (initial_umask); break; - + case NO_ANCHORED_OPTION: args->include_anchored = 0; /* Clear the default for comman line args */ args->matching_flags &= ~ EXCLUDE_ANCHORED; break; - + case NO_IGNORE_CASE_OPTION: args->matching_flags &= ~ FNM_CASEFOLD; break; - + case NO_IGNORE_COMMAND_ERROR_OPTION: ignore_command_error_option = false; break; - + case NO_OVERWRITE_DIR_OPTION: old_files_option = NO_OVERWRITE_DIR_OLD_FILES; break; - + case NO_QUOTE_CHARS_OPTION: for (;*arg; arg++) set_char_quoting (NULL, *arg, 0); break; - + case NO_WILDCARDS_OPTION: args->wildcards = disable_wildcards; break; - + case NO_WILDCARDS_MATCH_SLASH_OPTION: args->matching_flags |= FNM_FILE_NAME; break; - + case NULL_OPTION: filename_terminator = '\0'; break; - + case NO_NULL_OPTION: filename_terminator = '\n'; break; - + case NUMERIC_OWNER_OPTION: numeric_owner_option = true; break; - + case OCCURRENCE_OPTION: if (!arg) occurrence_option = 1; @@ -1808,15 +1807,15 @@ parse_opt (int key, char *arg, struct argp_state *state) _("Invalid number"))); } break; - + case OVERWRITE_DIR_OPTION: old_files_option = DEFAULT_OLD_FILES; break; - + case OVERWRITE_OPTION: old_files_option = OVERWRITE_OLD_FILES; break; - + case OWNER_OPTION: if (! (strlen (arg) < UNAME_FIELD_SIZE && uname_to_uid (arg, &owner_option))) @@ -1830,25 +1829,25 @@ parse_opt (int key, char *arg, struct argp_state *state) _("Invalid owner"))); } break; - + case QUOTE_CHARS_OPTION: for (;*arg; arg++) set_char_quoting (NULL, *arg, 1); break; - + case QUOTING_STYLE_OPTION: tar_set_quoting_style (arg); break; - + case PAX_OPTION: args->pax_option = true; xheader_set_option (arg); break; - + case POSIX_OPTION: set_archive_format ("posix"); break; - + case PRESERVE_OPTION: /* FIXME: What it is good for? */ same_permissions_option = true; @@ -1856,7 +1855,7 @@ parse_opt (int key, char *arg, struct argp_state *state) WARN ((0, 0, _("The --preserve option is deprecated, " "use --preserve-permissions --preserve-order instead"))); break; - + case RECORD_SIZE_OPTION: { uintmax_t u; @@ -1871,32 +1870,36 @@ parse_opt (int key, char *arg, struct argp_state *state) blocking_factor = record_size / BLOCKSIZE; } break; - + case RECURSIVE_UNLINK_OPTION: recursive_unlink_option = true; break; - + case REMOVE_FILES_OPTION: remove_files_option = true; break; - + case RESTRICT_OPTION: restrict_option = true; break; - + case RMT_COMMAND_OPTION: rmt_command = arg; break; - + case RSH_COMMAND_OPTION: rsh_command_option = arg; break; - + case SHOW_DEFAULTS_OPTION: - show_default_settings (stdout); - close_stdout (); - exit (0); - + { + char *s = format_default_settings (); + printf ("%s\n", s); + close_stdout (); + free (s); + exit (0); + } + case STRIP_COMPONENTS_OPTION: { uintmax_t u; @@ -2062,7 +2065,7 @@ static struct argp argp = { N_("[FILE]..."), doc, NULL, - NULL, + tar_help_filter, NULL }; -- 2.44.0