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/****************************************************************************
*
* MODULE: Vector library
*
* AUTHOR(S): Radim Blazek
*
*
* PURPOSE: Higher level functions for reading/writing/manipulating vectors.
*
* COPYRIGHT: (C) 2001 by the GRASS Development Team
*
* This program is free software under the GNU General Public
* License (>=v2). Read the file COPYING that comes with GRASS
* for details.
*
*****************************************************************************/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "Vect.h"
/*!
\fn int Vect_hist_command ( struct Map_info *Map )
\brief write command info to history file
\return 0 OK, -1 error
\param struct Map_info *Map
*/
int
Vect_hist_command ( struct Map_info *Map )
{
char *cmd, buf[2000];
G_debug (3, "Vect_hist_command()");
cmd = G_recreate_command();
Vect_hist_write ( Map, "COMMAND: " );
Vect_hist_write ( Map, cmd );
Vect_hist_write ( Map, "\n" );
sprintf ( buf, "GISDBASE: %s\n", G_gisdbase()); /* Needed ?*/
Vect_hist_write ( Map, buf );
sprintf ( buf, "LOCATION: %s MAPSET: %s USER: %s DATE: %s\n",
G_location(), G_mapset(), G_whoami(), G_date()); /* Needed ?*/
Vect_hist_write ( Map, buf );
return 0;
}
/*!
\fn int Vect_hist_write ( struct Map_info *Map, char *str )
\brief write string to history file
\return the number of characters printed
\param struct Map_info *Map, char *str
*/
int
Vect_hist_write ( struct Map_info *Map, char *str )
{
int ret ;
G_debug (5, "Vect_hist_write()");
ret = fprintf ( Map->hist_fp, str );
fflush ( Map->hist_fp );
return ( ret );
}
/*!
\fn char Vect_hist_read ( char *s, int size, struct Map_info *Map )
\brief reads one line from history file without newline character
\return return s on success, and NULL on error or EOF
\param s buffer, allocated space must be size+1
\param size maximum number of character
\param Map
*/
char *
Vect_hist_read ( char *s, int size, struct Map_info *Map )
{
int ret;
G_debug (5, "Vect_hist_read()");
if ( Map->hist_fp == NULL ) return NULL; /* OK for shapefile etc. */
ret = G_getl2 (s, size, Map->hist_fp);
if ( ret == 1 ) return s;
return NULL;
}
/*!
\fn int Vect_hist_rewind ( struct Map_info *Map )
\brief rewind history file
\return the number of characters printed
\param struct Map_info *Map, char *str
*/
void
Vect_hist_rewind ( struct Map_info *Map )
{
G_debug (3, "Vect_hist_rewind()");
if ( Map->hist_fp != NULL )
rewind ( Map->hist_fp );
}
/*!
\fn int Vect_hist_copy ( struct Map_info *In, struct Map_info *Out )
\brief copy history from one map to another
\return 0 OK, -1 error
\param struct Map_info *In, struct Map_info *Out
*/
int
Vect_hist_copy ( struct Map_info *In, struct Map_info *Out )
{
int red, ret;
char buf[1000];
G_debug (3, "Vect_hist_copy()");
if ( In->hist_fp == NULL ) return 0; /* This is correct (old hist doesn't exist) */
if ( Out->hist_fp == NULL ) return -1;
fseek ( Out->hist_fp, 0, SEEK_END);
rewind ( In->hist_fp );
while ( (red = fread (buf, 1, 1000, In->hist_fp)) ) {
if ( !(ret = fwrite (buf, 1, red, Out->hist_fp))) {
return (-1);
}
fflush ( Out->hist_fp );
}
/* In ends with \n ? */
fseek ( In->hist_fp, -1, SEEK_END);
if ( fread ( buf, 1, 1, In->hist_fp) != 1 ) {
return -1;
}
if ( buf[0] != '\n' ) {
Vect_hist_write ( Out, "\n");
}
/* Separator */
Vect_hist_write ( Out, "---------------------------------------------------------------------------------\n");
return ( 0 );
}
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