375 lines
8.9 KiB
C
375 lines
8.9 KiB
C
/* Create simple DB database from textual input.
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Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <argp.h>
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#include <ctype.h>
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#include <db_185.h>
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#include <errno.h>
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#include <error.h>
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#include <fcntl.h>
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#include <libintl.h>
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#include <locale.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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/* Get libc version number. */
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#include "../version.h"
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#define PACKAGE _libc_intl_domainname
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/* If non-zero convert key to lower case. */
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static int to_lowercase;
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/* If non-zero print content of input file, one entry per line. */
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static int do_undo;
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/* If non-zero do not print informational messages. */
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static int be_quiet;
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/* Name of output file. */
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static const char *output_name;
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/* Name and version of program. */
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static void print_version (FILE *stream, struct argp_state *state);
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void (*argp_program_version_hook) (FILE *, struct argp_state *) = print_version;
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/* Definitions of arguments for argp functions. */
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static const struct argp_option options[] =
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{
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{ "fold-case", 'f', NULL, 0, N_("Convert key to lower case") },
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{ "output", 'o', N_("NAME"), 0, N_("Write output to file NAME") },
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{ "quiet", 'q', NULL, 0,
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N_("Do not print messages while building database") },
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{ "undo", 'u', NULL, 0,
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N_("Print content of database file, one entry a line") },
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{ NULL, 0, NULL, 0, NULL }
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};
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/* Short description of program. */
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static const char doc[] = N_("Create simple DB database from textual input.");
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/* Strings for arguments in help texts. */
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static const char args_doc[] = N_("\
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INPUT-FILE OUTPUT-FILE\n-o OUTPUT-FILE INPUT-FILE\n-u INPUT-FILE");
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/* Prototype for option handler. */
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static error_t parse_opt __P ((int key, char *arg, struct argp_state *state));
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/* Function to print some extra text in the help message. */
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static char *more_help __P ((int key, const char *text, void *input));
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/* Data structure to communicate with argp functions. */
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static struct argp argp =
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{
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options, parse_opt, args_doc, doc, NULL, more_help
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};
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/* Prototypes for local functions. */
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static int process_input __P ((FILE *input, const char *inname, DB *output,
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int to_lowercase, int be_quiet));
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static int print_database __P ((DB *db));
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int main __P ((int argc, char *argv[]));
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int
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main (argc, argv)
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int argc;
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char *argv[];
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{
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const char *input_name;
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FILE *input_file;
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DB *db_file;
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int status;
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int remaining;
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int mode = 0666;
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/* Set locale via LC_ALL. */
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setlocale (LC_ALL, "");
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/* Set the text message domain. */
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textdomain (_libc_intl_domainname);
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/* Initialize local variables. */
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input_name = NULL;
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/* Parse and process arguments. */
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argp_parse (&argp, argc, argv, 0, &remaining, NULL);
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/* Determine file names. */
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if (do_undo || output_name != NULL)
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{
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if (remaining + 1 != argc)
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{
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wrong_arguments:
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error (0, 0, gettext ("wrong number of arguments"));
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argp_help (&argp, stdout, ARGP_HELP_SEE,
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program_invocation_short_name);
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exit (1);
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}
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input_name = argv[remaining];
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}
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else
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{
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if (remaining + 2 != argc)
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goto wrong_arguments;
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input_name = argv[remaining++];
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output_name = argv[remaining];
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}
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/* Special handling if we are asked to print the database. */
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if (do_undo)
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{
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db_file = dbopen (input_name, O_RDONLY, 0666, DB_BTREE, NULL);
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if (db_file == NULL)
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error (EXIT_FAILURE, 0, gettext ("cannot open database file `%s': %s"),
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input_name,
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errno == EINVAL ? gettext ("incorrectly formatted file")
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: strerror (errno));
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status = print_database (db_file);
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db_file->close (db_file);
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return status;
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}
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/* Open input file. */
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if (strcmp (input_name, "-") == 0 || strcmp (input_name, "/dev/stdin") == 0)
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input_file = stdin;
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else
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{
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struct stat st;
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input_file = fopen (input_name, "r");
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if (input_file == NULL)
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error (EXIT_FAILURE, errno, gettext ("cannot open input file `%s'"),
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input_name);
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/* Get the access rights from the source file. The output file should
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have the same. */
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if (fstat (fileno (input_file), &st) >= 0)
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mode = st.st_mode & ACCESSPERMS;
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}
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/* Open output file. This must not be standard output so we don't
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handle "-" and "/dev/stdout" special. */
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db_file = dbopen (output_name, O_CREAT | O_RDWR | O_TRUNC, mode,
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DB_BTREE, NULL);
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if (db_file == NULL)
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error (EXIT_FAILURE, errno, gettext ("cannot open output file `%s'"),
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output_name);
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/* Start the real work. */
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status = process_input (input_file, input_name, db_file, to_lowercase,
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be_quiet);
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/* Close files. */
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if (input_file != stdin)
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fclose (input_file);
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db_file->close (db_file);
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return status;
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}
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/* Handle program arguments. */
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static error_t
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parse_opt (int key, char *arg, struct argp_state *state)
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{
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switch (key)
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{
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case 'f':
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to_lowercase = 1;
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break;
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case 'o':
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output_name = arg;
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break;
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case 'q':
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be_quiet = 1;
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break;
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case 'u':
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do_undo = 1;
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break;
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default:
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return ARGP_ERR_UNKNOWN;
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}
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return 0;
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}
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static char *
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more_help (int key, const char *text, void *input)
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{
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switch (key)
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{
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case ARGP_KEY_HELP_EXTRA:
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/* We print some extra information. */
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return strdup (gettext ("\
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Report bugs using the `glibcbug' script to <bugs@gnu.org>.\n"));
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default:
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break;
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}
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return (char *) text;
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}
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/* Print the version information. */
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static void
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print_version (FILE *stream, struct argp_state *state)
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{
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fprintf (stream, "makedb (GNU %s) %s\n", PACKAGE, VERSION);
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fprintf (stream, gettext ("\
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Copyright (C) %s Free Software Foundation, Inc.\n\
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This is free software; see the source for copying conditions. There is NO\n\
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warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
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"), "1996, 1997, 1998");
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fprintf (stream, gettext ("Written by %s.\n"), "Ulrich Drepper");
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}
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static int
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process_input (input, inname, output, to_lowercase, be_quiet)
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FILE *input;
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const char *inname;
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DB *output;
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int to_lowercase;
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int be_quiet;
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{
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char *line;
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size_t linelen;
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int status;
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size_t linenr;
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line = NULL;
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linelen = 0;
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status = EXIT_SUCCESS;
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linenr = 0;
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while (!feof (input))
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{
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DBT key;
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DBT val;
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char *cp;
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int n;
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n = getline (&line, &linelen, input);
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if (n < 0)
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/* This means end of file or some bug. */
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break;
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if (n == 0)
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/* Short read. Probably interrupted system call. */
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continue;
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++linenr;
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if (line[n - 1] == '\n')
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/* Remove trailing newline. */
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line[--n] = '\0';
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cp = line;
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while (isspace (*cp))
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++cp;
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if (*cp == '#')
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/* First non-space character in line '#': it's a comment. */
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continue;
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key.data = cp;
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while (*cp != '\0' && !isspace (*cp))
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{
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if (to_lowercase)
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*cp = tolower (*cp);
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++cp;
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}
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if (key.data == cp)
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/* It's an empty line. */
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continue;
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key.size = cp - (char *) key.data;
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while (isspace (*cp))
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++cp;
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val.data = cp;
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val.size = (&line[n] - cp) + 1;
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/* Store the value. */
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status = output->put (output, &key, &val, R_NOOVERWRITE);
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if (status != 0)
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{
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if (status == 1)
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{
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if (!be_quiet)
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error_at_line (0, 0, inname, linenr,
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gettext ("duplicate key"));
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/* This is no real error. Just give a warning. */
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status = 0;
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continue;
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}
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else
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error (0, errno, gettext ("while writing database file"));
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status = EXIT_FAILURE;
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clearerr (input);
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break;
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}
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}
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if (ferror (input))
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{
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error (0, 0, gettext ("problems while reading `%s'"), inname);
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status = EXIT_FAILURE;
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}
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return status;
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}
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static int
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print_database (db)
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DB *db;
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{
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DBT key;
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DBT val;
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int no_more;
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no_more = db->seq (db, &key, &val, R_FIRST);
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while (!no_more)
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{
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printf ("%.*s %s\n", (int) key.size, (char *) key.data,
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(char *) val.data);
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no_more = db->seq (db, &key, &val, R_NEXT);
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}
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if (no_more == -1)
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{
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error (0, errno, gettext ("while reading database"));
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return EXIT_FAILURE;
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}
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return EXIT_SUCCESS;
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}
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