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Diffstat (limited to 'db/makedb.c')
| -rw-r--r-- | db/makedb.c | 325 |
1 files changed, 325 insertions, 0 deletions
diff --git a/db/makedb.c b/db/makedb.c new file mode 100644 index 0000000000..b1ed982275 --- /dev/null +++ b/db/makedb.c @@ -0,0 +1,325 @@ +/* makedb -- create simple DB database from textual input. +Copyright (C) 1996 Free Software Foundation, Inc. +This file is part of the GNU C Library. +Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +#include <db.h> +#include <ctype.h> +#include <errno.h> +#include <error.h> +#include <fcntl.h> +#include <getopt.h> +#include <libintl.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +/* Get libc version number. */ +#include "../version.h" + + +/* Long options. */ +static const struct option long_options[] = +{ + { "help", no_argument, NULL, 'h' }, + { "fold-case", no_argument, NULL, 'f' }, + { "output", required_argument, NULL, 'o' }, + { "undo", no_argument, NULL, 'u' }, + { "version", no_argument, NULL, 'V' }, + { NULL, } +}; + +/* Prototypes for local functions. */ +static void usage __P ((int status)) __attribute__ ((noreturn)); +static int process_input __P ((FILE *input, const char *inname, DB *output, + int to_lowercase)); +static int print_database __P ((DB *db)); + + +int +main (argc, argv) + int argc; + char *argv[]; +{ + const char *output_name; + const char *input_name; + FILE *input_file; + DB *db_file; + int do_help; + int do_version; + int to_lowercase; + int do_undo; + int status; + int opt; + + /* Set locale via LC_ALL. */ + setlocale (LC_ALL, ""); + + /* Set the text message domain. */ + textdomain (_libc_intl_domainname); + + /* Initialize local variables. */ + do_help = 0; + do_version = 0; + to_lowercase = 0; + do_undo = 0; + output_name = NULL; + + while ((opt = getopt_long (argc, argv, "fho:uV", long_options, NULL)) != EOF) + switch (opt) + { + case '\0': /* Long option. */ + break; + case 'h': + do_help = 1; + break; + case 'f': + to_lowercase = 1; + break; + case 'o': + output_name = optarg; + break; + case 'u': + do_undo = 1; + break; + case 'V': + do_version = 1; + break; + default: + usage (EXIT_FAILURE); + } + + /* Version information is requested. */ + if (do_version) + printf ("%s - GNU %s %s\n", program_invocation_name, "libc", VERSION); + + /* Help is requested. */ + if (do_help) + usage (EXIT_SUCCESS); + else if (do_version) + exit (EXIT_SUCCESS); + + /* Determine file names. */ + if (do_undo || output_name != NULL) + { + if (optind + 1 != argc) + { + wrong_arguments: + error (0, 0, gettext ("wrong number of arguments")); + usage (EXIT_FAILURE); + } + input_name = argv[optind]; + } + else + { + if (optind + 2 != argc) + goto wrong_arguments; + + input_name = argv[optind++]; + output_name = argv[optind]; + } + + /* Special handling if we are asked to print the database. */ + if (do_undo) + { + db_file = dbopen (input_name, O_RDONLY, 0666, DB_BTREE, NULL); + if (db_file == NULL) + error (EXIT_FAILURE, 0, gettext ("cannot open database file `%s': %s"), + input_name, + errno == EFTYPE ? gettext ("incorrectly formatted file") + : strerror (errno)); + + status = print_database (db_file); + + db_file->close (db_file); + + return status; + } + + /* Open input file. */ + if (strcmp (input_name, "-") == 0 || strcmp (input_name, "/dev/stdin") == 0) + input_file = stdin; + else + { + input_file = fopen (input_name, "r"); + if (input_file == NULL) + error (EXIT_FAILURE, errno, gettext ("cannot open input file `%s'"), + input_name); + } + + /* Open output file. This must not be standard output so we don't + handle "-" and "/dev/stdout" special. */ + db_file = dbopen (output_name, O_CREAT | O_RDWR | O_TRUNC, 0666, + DB_BTREE, NULL); + if (db_file == NULL) + error (EXIT_FAILURE, errno, gettext ("cannot open output file `%s'")); + + /* Start the real work. */ + status = process_input (input_file, input_name, db_file, to_lowercase); + + /* Close files. */ + if (input_file != stdin) + fclose (input_file); + db_file->close (db_file); + + return status; +} + + +static void +usage (status) + int status; +{ + if (status != EXIT_SUCCESS) + fprintf (stderr, gettext ("Try `%s --help' for more information.\n"), + program_invocation_name); + else + printf (gettext ("\ +Usage: %s [OPTION]... INPUT-FILE OUTPUT-FILE\n\ + %s [OPTION]... -o OUTPUT-FILE INPUT-FILE\n\ + %s [OPTION]... -u INPUT-FILE\n\ +Mandatory arguments to long options are mandatory for short options too.\n\ + -f, --fold-case convert key to lower case\n\ + -h, --help display this help and exit\n\ + -o, --output=NAME write output to file NAME\n\ + -u, --undo print content of database file, one entry a line\n\ + -V, --version output version information and exit\n\ +If INPUT-FILE is -, input is read from standard input.\n"), + program_invocation_name, program_invocation_name, + program_invocation_name); + + exit (status); +} + + +static int +process_input (input, inname, output, to_lowercase) + FILE *input; + const char *inname; + DB *output; + int to_lowercase; +{ + char *line; + size_t linelen; + int status; + size_t linenr; + + line = NULL; + linelen = 0; + status = EXIT_SUCCESS; + linenr = 0; + + while (!feof (input)) + { + DBT key; + DBT val; + char *cp; + int n; + + n = getline (&line, &linelen, input); + if (n < 0) + /* This means end of file or some bug. */ + break; + if (n == 0) + /* Short read. Probably interrupted system call. */ + continue; + + ++linenr; + + if (line[n - 1] == '\n') + /* Remove trailing newline. */ + line[--n] = '\0'; + + cp = line; + while (isspace (*cp)) + ++cp; + + if (*cp == '#') + /* First non-space character in line '#': it's a comment. */ + continue; + + key.data = cp; + while (*cp != '\0' && !isspace (*cp)) + { + if (to_lowercase) + *cp = tolower (*cp); + ++cp; + } + + if (key.data == cp) + /* It's an empty line. */ + continue; + + key.size = cp - (char *) key.data; + + while (isspace (*cp)) + ++cp; + + val.data = cp; + val.size = &line[n] - cp; + + /* Store the value. */ + status = output->put (output, &key, &val, R_NOOVERWRITE); + if (status != 0) + { + if (status == 1) + error_at_line (0, 0, inname, linenr, gettext ("duplicate key")); + else + error (0, errno, gettext ("while writing data base file")); + + status = EXIT_FAILURE; + clearerr (input); + break; + } + } + + if (ferror (input)) + { + error (0, 0, gettext ("problems while reading `%s'")); + status = EXIT_FAILURE; + } + + return status; +} + + +static int +print_database (db) + DB *db; +{ + DBT key; + DBT val; + int no_more; + + no_more = db->seq (db, &key, &val, R_FIRST); + while (!no_more) + { + printf ("%.*s %.*s\n", (int) key.size, (char *) key.data, (int) val.size, + (char *) val.data); + + no_more = db->seq (db, &key, &val, R_NEXT); + } + + if (no_more == -1) + { + error (0, errno, gettext ("while reading database")); + return EXIT_FAILURE; + } + + return EXIT_SUCCESS; +} |