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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "gis.h"
#include "Vect.h"
#include "conv.h"
#include "local_proto.h"
#include "glocale.h"
int read_line ( GVFILE *, struct line_pnts *);
/* read old 3.0 or 4.0 dig file into array
returns number of elements read into array
or -1 on error */
int read_dig ( FILE *Digin, struct Map_info *Mapout,
struct Line **plines , int endian, int att )
{
char buf[100];
struct dig_head In_head;
int lalloc, line=0, type, portable=1;
int npoints=0, nlines=0, nbounds=0;
int ndpoints=0, ndlines=0, ndbounds=0, nunknown=0;
struct Line *lines;
struct line_pnts *nline;
struct line_cats *cat_out;
double dbuf;
int ibuf;
long lbuf;
GVFILE gvf;
dig_file_init ( &gvf );
gvf.file = Digin;
Vect__init_head (Mapout);
/* set conversion matrices */
dig_init_portable (&(In_head.port), endian);
/* Version 3 dig files were not portable and some version 4
* files may be also non portable */
G_message ( _("Reading dig file...\n"));
/* read and copy head */
dig_fseek (&gvf, 0L, SEEK_SET) ; /* set to beginning */
if (0 >= dig__fread_port_C ( buf, DIG4_ORGAN_LEN, &gvf)) return -1;
buf[DIG4_ORGAN_LEN-1] = '\0';
Vect_set_organization ( Mapout, buf );
if (0 >= dig__fread_port_C ( buf, DIG4_DATE_LEN, &gvf)) return -1;
buf[DIG4_DATE_LEN-1] = '\0';
Vect_set_date ( Mapout, buf );
if (0 >= dig__fread_port_C ( buf, DIG4_YOUR_NAME_LEN, &gvf)) return -1;
buf[DIG4_YOUR_NAME_LEN-1] = '\0';
Vect_set_person ( Mapout, buf );
if (0 >= dig__fread_port_C ( buf, DIG4_MAP_NAME_LEN, &gvf)) return -1;
buf[DIG4_MAP_NAME_LEN-1] = '\0';
Vect_set_map_name ( Mapout, buf );
if (0 >= dig__fread_port_C ( buf, DIG4_SOURCE_DATE_LEN, &gvf)) return -1;
buf[DIG4_SOURCE_DATE_LEN-1] = '\0';
Vect_set_map_date ( Mapout, buf );
if (0 >= dig__fread_port_C ( buf, DIG4_LINE_3_LEN, &gvf)) return -1;
buf[DIG4_LINE_3_LEN-1] = '\0';
Vect_set_comment ( Mapout, buf );
if (0 >= dig__fread_port_C( buf, VERS_4_DATA_SIZE, &gvf)) return -1;
if (buf[0] != '%' || buf[1] != '%') { /* Version3.0 */
In_head.Version_Major = 3;
portable = 0; /* input vector is not portable format*/
G_message ( _("Input file is version 3.\n")) ;
} else {
In_head.Version_Major = 4;
G_message ( _("Input file is version 4.\n")) ;
/* determine if in portable format or not */
if (buf[6] == 1 && (~buf[6]&0xff) == (buf[7]&0xff)) { /* portable ? */
portable = 1; /* input vector is portable format*/
} else {
portable = 0; /* input vector is not portable format*/
}
}
if ( portable == 1) {
G_message ( _("Input file is portable.\n")) ;
} else {
G_warning ( _("WARNING: Input file is not portable."
"We will attempt to convert anyway but conversion may fail."
"Please read manual for detail information.")) ;
}
/* set Cur_Head because it is used by dig__*_convert()
called by dig__fread_port_*() */
dig_set_cur_port ( &(In_head.port) );
if (0 >= dig__fread_port_L ( &lbuf, 1, &gvf)) return -1;
Vect_set_scale ( Mapout, (int) lbuf );
if (0 >= dig__fread_port_I ( &ibuf, 1, &gvf)) return -1;
Vect_set_zone ( Mapout, ibuf );
if (0 >= dig__fread_port_D ( &dbuf, 1, &gvf)) return -1; /* W */
if (0 >= dig__fread_port_D ( &dbuf, 1, &gvf)) return -1; /* E */
if (0 >= dig__fread_port_D ( &dbuf, 1, &gvf)) return -1; /* S */
if (0 >= dig__fread_port_D ( &dbuf, 1, &gvf)) return -1; /* N */
if (0 >= dig__fread_port_D ( &dbuf, 1, &gvf)) return -1;
Vect_set_thresh ( Mapout, dbuf );
/* reading dig file body (elements) */
nline = Vect_new_line_struct ();
cat_out = Vect_new_cats_struct();
lalloc = 0;
lines = NULL;
line = 0;
while ( 1 ) {
type = read_line ( &gvf, nline);
G_debug (3, "read line = %d, type = %d", line, type);
if ( type == -2 ) break; /* EOF */
switch (type) {
case GV_POINT:
npoints++;
break;
case GV_LINE:
nlines++;
break;
case GV_BOUNDARY:
nbounds++;
break;
case 0: /* dead */
break;
default:
nunknown++;
break;
}
if ( !(type & (GV_POINT | GV_LINE | GV_BOUNDARY ))) continue;
if ( (type & GV_BOUNDARY) || !att){
Vect_write_line ( Mapout, type, nline, cat_out );
/* reset In_head */
dig_set_cur_port ( &(In_head.port) );
} else { /* GV_POINT or GV_LINE */
if ( line >= lalloc ) {
lalloc += 10000;
lines = (struct Line *) realloc ( lines, lalloc * sizeof(struct Line));
}
lines[line].type = type;
lines[line].n_points = nline->n_points;
lines[line].cat = -1;
lines[line].x = (double *) malloc ( nline->n_points * sizeof (double));
lines[line].y = (double *) malloc ( nline->n_points * sizeof (double));
memcpy ( (void *) lines[line].x, (void *) nline->x,
nline->n_points * sizeof(double));
memcpy ( (void *) lines[line].y, (void *) nline->y,
nline->n_points * sizeof(double));
line++;
}
}
if (att) {
G_message ( _("%-5d points read to memory\n"), npoints);
G_message ( _("%-5d lines read to memory\n"), nlines);
} else {
G_message ( _("%-5d points read and written to output\n"), npoints);
G_message ( _("%-5d lines read and written to output\n"), nlines);
}
G_message ( _("%-5d area boundaries read and written to output\n"), nbounds);
G_message ( _("%-5d dead points skipped\n"), ndpoints);
G_message ( _("%-5d dead lines skipped\n"), ndlines);
G_message ( _("%-5d dead area boundaries skipped\n"), ndbounds);
G_message ( _("%-5d elements of unknown type skipped\n"), nunknown);
G_message ( _("%-5d elements read to memory.\n"), line);
*plines = lines;
return (line);
}
/* read_line() reads element from file
returns element type
*/
int read_line ( GVFILE *Gvf, struct line_pnts *nline )
{
int n_points;
long itype;
if (0 >= dig__fread_port_L (&itype, 1, Gvf)) return (-2);
itype = dig_old_to_new_type ((char) itype);
if (0 >= dig__fread_port_I (&n_points, 1, Gvf)) return (-2);
if (0 > dig_alloc_points ( nline, n_points))
G_fatal_error ("Cannot allocate points");
nline->n_points = n_points;
if (0 >= dig__fread_port_D ( nline->x, n_points, Gvf)) return (-2);
if (0 >= dig__fread_port_D ( nline->y, n_points, Gvf)) return (-2);
return ((int) itype);
}
/* read old 3.0, 4.0 dig_att file into array*/
int read_att (FILE *Attin, struct Categ **pcats )
{
int ctalloc=0, cat=0, type, ret, rcat;
int npoints=0, nlines=0, ncentroids=0;
int ndpoints=0, ndlines=0, ndcentroids=0, nunknown=0;
char buf[201], ctype;
double x, y;
struct Categ *cats;
G_message ( _("Reading dig_att file...\n"));
ctalloc = 0;
cats = NULL;
while ( fgets( buf, 200, Attin ) != NULL) {
ret = sscanf( buf, "%c %lf %lf %d", &ctype, &x, &y, &rcat);
if (ret != 4) {
G_warning ( _("Error: %s"), buf);
continue;
}
switch (ctype) {
case 'P':
type = GV_POINT;
npoints++;
break;
case 'L':
type = GV_LINE;
nlines++;
break;
case 'A':
type = GV_CENTROID;
ncentroids++;
break;
case 'p':
case 'l':
case 'a':
type = 0; /* dead */
default:
G_warning ( _("Unknown type: %c"), ctype);
type = 0;
nunknown++;
break;
}
if (!(type & (GV_POINT | GV_LINE | GV_CENTROID))) { continue;}
if ( cat >= ctalloc ) {
ctalloc += 10000;
cats = (struct Categ *) realloc ( cats, ctalloc * sizeof(struct Categ));
}
cats[cat].type = type;
cats[cat].x = x;
cats[cat].y = y;
cats[cat].cat = rcat;
cat++;
}
G_message ( _("%-5d point categories read\n"), npoints);
G_message ( _("%-5d line categories read\n"), nlines);
G_message ( _("%-5d centroids read\n"), ncentroids);
G_message ( _("%-5d dead point categories skipped\n"), ndpoints);
G_message ( _("%-5d dead line categories skipped\n"), ndlines);
G_message ( _("%-5d dead centroids skipped\n"), ndcentroids);
G_message ( _("%-5d categories of unknown type skipped\n"), nunknown);
G_message ( _("%-5d categories read into memory.\n"), cat);
*pcats = cats;
return (cat);
}
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