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| -rw-r--r-- | utils/showtrans.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/utils/showtrans.c b/utils/showtrans.c new file mode 100644 index 00000000..88e9b95f --- /dev/null +++ b/utils/showtrans.c @@ -0,0 +1,137 @@ +/* Show files' passive translators. + + Copyright (C) 1995 Free Software Foundation, Inc. + + Written by Miles Bader <miles@gnu.ai.mit.edu> + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2, or (at + your option) any later version. + + This program is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include <hurd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <getopt.h> +#include <fcntl.h> +#include <unistd.h> + +#include <error.h> +#include <argz.h> + +/* ---------------------------------------------------------------- */ + +#define USAGE "Usage: %s [OPTION...] FILE...\n" + +#define SHORT_OPTIONS "hs?" + +static void +usage(status) + int status; +{ + if (status != 0) + fprintf(stderr, "Try `%s --help' for more information.\n", + program_invocation_name); + else + { + printf(USAGE, program_invocation_name); + printf("\ +\n\ + -h, --no-header Don't display `FILENAME: ' before translators\n\ + -s, --silent No output; useful when checking error status\n\ + --help Give this help list\n\ +"); + } + + exit(status); +} + +static struct option options[] = +{ + {"no-header", no_argument, 0, 'h'}, + {"silent", no_argument, 0, 's'}, + {"quiet", no_argument, 0, 's'}, + {"help", no_argument, 0, '?'}, + {0, 0, 0, 0} +}; + +/* ---------------------------------------------------------------- */ + +void +main(int argc, char *argv[]) +{ + int opt; + /* The default exits status -- changed to 0 if we find any translators. */ + int status = 1; + /* Some option flags. */ + int print_header = 1, silent = 0; + + /* Parse our options... */ + while ((opt = getopt_long(argc, argv, "+" SHORT_OPTIONS, options, 0)) != EOF) + switch (opt) + { + case 'h': print_header = 0; break; + case 's': silent = 1; break; + case '?': usage(0); break; + default: usage(-1); break; + } + + while (optind != argc) + { + char *node_name = argv[optind++]; + file_t node = file_name_lookup(node_name, O_NOTRANS, 0); + + if (node == MACH_PORT_NULL) + error(0, errno, "%s", node_name); + else + { + char buf[1024], *trans = buf; + int trans_len = sizeof(buf); + error_t err = file_get_translator(node, &trans, &trans_len); + + switch (err) + { + case 0: + /* Make the '\0's in TRANS printable. */ + argz_stringify(trans, trans_len); + + if (!silent) + if (print_header) + printf("%s: %s\n", node_name, trans); + else + puts(trans); + + if (trans != buf) + vm_deallocate(mach_task_self(), + (vm_address_t)trans, trans_len); + + status = 0; + + break; + + case EINVAL: + /* NODE just doesn't have a translator. */ + if (!silent && print_header) + puts(node_name); + break; + + default: + error(0, err, "%s", node_name); + } + + mach_port_deallocate(mach_task_self(), node); + } + } + + exit(status); +} |