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/*
* =========================================================================
* sdts2dlg.c - A program to convert USGS SDTS DLG files to optional-format USGS DLG files.
* Copyright (c) 2000 Fred M. Erickson
*
* 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 <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <math.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
#include <time.h>
#include <string.h>
#include "drawmap.h"
#include "dlg.h"
#include "sdts_utils.h"
long get_extra_attrib(long, long *major, long *minor, struct subfield *subfield);
void
license(void)
{
fprintf(stderr, "This program is free software; you can redistribute it and/or modify\n");
fprintf(stderr, "it under the terms of the GNU General Public License as published by\n");
fprintf(stderr, "the Free Software Foundation; either version 2, or (at your option)\n");
fprintf(stderr, "any later version.\n\n");
fprintf(stderr, "This program is distributed in the hope that it will be useful,\n");
fprintf(stderr, "but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
fprintf(stderr, "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n");
fprintf(stderr, "GNU General Public License for more details.\n\n");
fprintf(stderr, "You should have received a copy of the GNU General Public License\n");
fprintf(stderr, "along with this program; if not, write to the Free Software\n");
fprintf(stderr, "Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.\n");
}
/*
* This program takes an SDTS file set as input,
* and produces a single optional-format DLG file
* as output.
*/
main(int argc, char *argv[])
{
int dlg_fdesc;
long length;
long gz_flag;
ssize_t (*read_function)();
if ((argc == 2) && (argv[1][0] == '-') && (argv[1][1] == 'L')) {
license();
exit(0);
}
if ((argc != 2) && (argc != 3)) {
fprintf(stderr, "Usage: %s ????LE@@.DDF [output_file_name]\n", argv[0]);
fprintf(stderr, " Where the ???? are alphanumeric characters, and @ represents a digit.\n");
exit(0);
}
/* Find file name length. */
length = strlen(argv[1]);
if (length < 12) {
fprintf(stderr, "File name %s appears too short to be valid. Should look like ????LE@@.DDF\n", argv[1]);
exit(0);
}
/*
* Figure out if the file is gzip-compressed or not.
*/
if ((strcmp(&argv[1][length - 3], ".gz") == 0) ||
(strcmp(&argv[1][length - 3], ".GZ") == 0)) {
gz_flag = 1;
if ((dlg_fdesc = buf_open_z(argv[1], O_RDONLY)) < 0) {
fprintf(stderr, "Can't open %s for reading, errno = %d\n", argv[1], errno);
exit(0);
}
read_function = buf_read_z;
}
else {
gz_flag = 0;
if ((dlg_fdesc = buf_open(argv[1], O_RDONLY)) < 0) {
fprintf(stderr, "Can't open %s for reading, errno = %d\n", argv[1], errno);
exit(0);
}
read_function = buf_read;
}
/*
* Files in Spatial Data Transfer System (SDTS) format are markedly
* different from the optional-format DLG files.
*
* We insist that the user specify one, single, SDTS file
* on the command line.
* The file must be the one whose name has the form ????LE??.DDF
* (or ????le??.ddf), and it may have a .gz on the end if it is gzip
* compressed.
*
* We allow the files to be gzip-compressed, and they can have either
* ".gz" or ".GZ" on the end. However, we insist that the rest of
* the file name have consistent case. That is, if the 'F' or 'f'
* in the ".DDF" or ".ddf" is in a given case, the rest of the file
* had better be in that same case.
*
* If the following "if" test succeeds, we assume we have an SDTS file.
*/
if (((length >= 7) && (gz_flag != 0) &&
((strncmp(&argv[1][length - 7], ".ddf", 4) == 0) ||
(strncmp(&argv[1][length - 7], ".DDF", 4) == 0))) ||
((length >= 4) && (gz_flag == 0) &&
((strcmp(&argv[1][length - 4], ".ddf") == 0) ||
(strcmp(&argv[1][length - 4], ".DDF") == 0)))) {
/* SDTS file */
/* Close the file. We will reopen it in parse_full_dlg_sdts(). */
if (gz_flag == 0) {
buf_close(dlg_fdesc);
}
else {
buf_close_z(dlg_fdesc);
}
/*
* Check that the file name takes the form that we expect.
*/
if (((gz_flag != 0) &&
((strncmp(&argv[1][length - 11], "le", 2) != 0) &&
(strncmp(&argv[1][length - 11], "LE", 2) != 0))) ||
((gz_flag == 0) &&
(strncmp(&argv[1][length - 8], "le", 2) != 0) &&
(strncmp(&argv[1][length - 8], "LE", 2) != 0))) {
fprintf(stderr, "The file %s looks like an SDTS file, but the name doesn't look right.\n", argv[1]);
exit(0);
}
/*
* The input file name looks okay. Let's launch into the information parsing.
*
* process_dlg_sdts() will create and write the output file.
*/
if (argc == 3) {
if (process_dlg_sdts(argv[1], argv[2], gz_flag, (struct image_corners *)0, 0, 1) != 0) {
exit(0);
}
}
else {
if (process_dlg_sdts(argv[1], (char *)0, gz_flag, (struct image_corners *)0, 0, 1) != 0) {
exit(0);
}
}
}
}
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