C++ G_parser函数代码示例

int main(int argc, char *argv[])
{
    struct Option *raster, *conf, *output;
    struct GModule *module;

    G_gisinit(argv[0]);
    module = G_define_module();
    module->description =
	_("Calculates coefficient of variation of patch area on a raster map");
    module->keywords = _("raster, landscape structure analysis, patch index");

    /* define options */
    raster = G_define_standard_option(G_OPT_R_MAP);
    conf = G_define_option();
    conf->key = "conf";
    conf->description = _("Configuration file");
    conf->gisprompt = "old_file,file,input";
    conf->type = TYPE_STRING;
    conf->required = YES;
    output = G_define_standard_option(G_OPT_R_OUTPUT);
    if (G_parser(argc, argv))
	exit(EXIT_FAILURE);
    return calculateIndex(conf->answer, patchAreaDistributionCV, NULL,
			  raster->answer, output->answer);
}

static void parse_command_line(int argc, char **argv)
{
    struct Option *driver, *database;
    struct GModule *module;

    /* Initialize the GIS calls */
    G_gisinit(argv[0]);

    driver = G_define_standard_option(G_OPT_DB_DRIVER);
    driver->options = db_list_drivers();
    driver->required = YES;
    driver->answer = (char *) db_get_default_driver_name();

    database = G_define_standard_option(G_OPT_DB_DATABASE);
    database->required = YES;

    /* Set description */
    module = G_define_module();
    G_add_keyword(_("database"));
    G_add_keyword(_("attribute table"));
    G_add_keyword(_("SQL"));
    module->description = _("Removes an existing database.");

    if (G_parser(argc, argv))
	exit(EXIT_FAILURE);

    parms.driver = driver->answer;
    parms.database = database->answer;
}

int main(int argc, char **argv)
{
    int i;

    G_gisinit(argv[0]);


    for (i = 0; i < MAXVIEWS; i++) {
	char buf[BUFSIZ];
	viewopts[i] = G_define_option();
	sprintf(buf, "view%d", i + 1);
	viewopts[i]->key = G_store(buf);
	viewopts[i]->type = TYPE_STRING;
	viewopts[i]->required = (i ? NO : YES);
	viewopts[i]->multiple = YES;
	viewopts[i]->gisprompt = "old,cell,Raster";;
	sprintf(buf, _("Raster file(s) for View%d"), i + 1);
	viewopts[i]->description = G_store(buf);
    }

    if (G_parser(argc, argv))
	exit(EXIT_FAILURE);

    parse_command(viewopts, vfiles, &numviews, &frames);

    return wxEntry(argc, argv);
}

int main(int argc, char *argv[])
{
    char name[200];
    char *fpath;
    struct GModule *module;
    struct Option *opt1;

    module = G_define_module();
    G_add_keyword(_("general"));
    G_add_keyword(_("map management"));
    G_add_keyword(_("scripts"));
    module->description = "Searches for GRASS support files.";

    G_gisinit(argv[0]);

    /* Define the different options */

    opt1 = G_define_option();
    opt1->key = "file";
    opt1->type = TYPE_STRING;
    opt1->required = YES;
    opt1->description = "Name of an file or directory";

    if (G_parser(argc, argv))
	exit(EXIT_FAILURE);

    strcpy(name, opt1->answer);

    fpath = G_find_etc(name);
    if (fpath)
	fprintf(stdout, "%s\n", fpath);

    exit(fpath ? EXIT_SUCCESS : EXIT_FAILURE);
}

int main(int argc, char *argv[])
{
    struct Option *raster, *conf, *output;
    struct GModule *module;

    G_gisinit(argv[0]);
    module = G_define_module();
    module->description =
	_("Calculates range of patch area size on a raster map");
    G_add_keyword(_("raster"));
    G_add_keyword(_("landscape structure analysis"));
    G_add_keyword(_("patch index"));

    /* define options */
    raster = G_define_standard_option(G_OPT_R_INPUT);

    conf = G_define_standard_option(G_OPT_F_INPUT);
    conf->key = "config";
    conf->description = _("Configuration file");
    conf->required = YES;

    output = G_define_standard_option(G_OPT_R_OUTPUT);

    if (G_parser(argc, argv))
	exit(EXIT_FAILURE);
    return calculateIndex(conf->answer, patchAreaDistributionRANGE, NULL,
			  raster->answer, output->answer);
}

static void parse_command_line(int argc, char **argv)
{
    struct Option *driver, *database;
    struct GModule *module;

    /* Initialize the GIS calls */
    G_gisinit(argv[0]);

    driver = G_define_standard_option(G_OPT_DRIVER);
    driver->options = db_list_drivers();
    driver->required = YES;

    database = G_define_standard_option(G_OPT_DATABASE);
    database->required = YES;

    /* Set description */
    module = G_define_module();
    module->keywords = _("database, SQL");
    module->description = _("Creates an empty database.");

    if (G_parser(argc, argv))
	exit(EXIT_FAILURE);

    parms.driver = driver->answer;
    parms.database = database->answer;
}

int main(int argc, char *argv[])
{
    struct Option *raster, *conf, *output;
    struct GModule *module;

    G_gisinit(argv[0]);
    module = G_define_module();
    module->description = _("Calculates shape index on a raster map");
    G_add_keyword(_("raster"));
    G_add_keyword(_("landscape structure analysis"));
    G_add_keyword(_("patch index"));

    /* define options */

    raster = G_define_standard_option(G_OPT_R_INPUT);

    conf = G_define_option();
    conf->key = "config";
    conf->description = _("Configuration file");
    conf->gisprompt = "old_file,file,input";
    conf->type = TYPE_STRING;
    conf->required = YES;

    output = G_define_standard_option(G_OPT_R_OUTPUT);

	/** add other options for index parameters here */

    if (G_parser(argc, argv))
	exit(EXIT_FAILURE);

    return calculateIndex(conf->answer, shape_index, NULL, raster->answer,
			  output->answer);

}

int main( int argc, char **argv )
{
  char *mapset;
  char *name;
  int fp;
  struct GModule *module;
  struct Option *map;
  struct Option *win;
  struct Cell_head window;

  /* Initialize the GIS calls */
  G_gisinit( argv[0] );

  module = G_define_module();
  module->keywords = ( "display, raster" );
  module->description = ( "Output raster map layers in a format suitable for display in QGIS" );

  map = G_define_standard_option( G_OPT_R_MAP );
  map->description = ( "Raster map to be displayed" );

  win = G_define_option();
  win->key = "window";
  win->type = TYPE_DOUBLE;
  win->multiple = YES;
  win->description = "xmin,ymin,xmax,ymax,ncols,nrows";

  if ( G_parser( argc, argv ) )
    exit( EXIT_FAILURE );

  name = map->answer;

  /* Make sure map is available */
  mapset = G_find_cell2( name, "" );
  if ( mapset == NULL )
    G_fatal_error(( "Raster map <%s> not found" ), name );

  /* It can happen that GRASS data set is 'corrupted' and zone differs in WIND and
   * cellhd, and G_open_cell_old fails, so it is better to read window from map */
  /* G_get_window( &window ); */
  G_get_cellhd( name, mapset, &window );
  window.west = atof( win->answers[0] );
  window.south = atof( win->answers[1] );
  window.east = atof( win->answers[2] );
  window.north = atof( win->answers[3] );
  window.cols = atoi( win->answers[4] );
  window.rows = atoi( win->answers[5] );
  G_adjust_Cell_head( &window, 1, 1 );
  G_set_window( &window );

  fp = G_raster_map_is_fp( name, mapset );

  /* use DCELL even if the map is FCELL */
  if ( fp )
    display( name, mapset, DCELL_TYPE );
  else
    display( name, mapset, CELL_TYPE );

  exit( EXIT_SUCCESS );
}

int main(int argc, char *argv[])
{
    int nlines;
    double textsize;
    char *dxf_file;
    struct Map_info In;
    struct GModule *module;
    struct Option *input, *output, *field;

    G_gisinit(argv[0]);

    /* Set description */
    module = G_define_module();
    G_add_keyword(_("vector"));
    G_add_keyword(_("export"));
    G_add_keyword(_("DXF"));
    module->description =
	_("Exports vector map to DXF file format.");

    input = G_define_standard_option(G_OPT_V_INPUT);

    field = G_define_standard_option(G_OPT_V_FIELD_ALL);
    
    output = G_define_standard_option(G_OPT_F_OUTPUT);
    output->required = YES;
    output->description = _("Name for DXF output file");

    if (G_parser(argc, argv))
	exit(EXIT_FAILURE);

    overwrite = module->overwrite;

    /* open input vector */
    dxf_file = G_store(output->answer);

    Vect_set_open_level(2);
    if (Vect_open_old2(&In, input->answer, "", field->answer) < 0)
	G_fatal_error(_("Unable to open vector map <%s>"), input->answer);

    dxf_open(dxf_file);		/* open output */

    textsize = do_limits(&In);	/* does header in dxf_fp */
    make_layername();
    dxf_entities();
    nlines = add_plines(&In, Vect_get_field_number(&In, field->answer),
			textsize);	/* puts plines in dxf_fp */

    dxf_endsec();
    dxf_eof();			/* puts final stuff in dxf_fp, closes file */

    G_done_msg(_("%d features written to '%s'."), nlines, dxf_file);

    G_free(dxf_file);

    exit(EXIT_SUCCESS);
}

void user_input(int argc, char **argv)
{
    struct Flag *bound;
    struct Flag *trace;
    struct Option *name;
    struct Option *out;

    bound = G_define_flag();
    bound->key = 'p';
    bound->description = "Include sampling area boundary as perimeter";

    trace = G_define_flag();
    trace->key = 't';
    trace->description = "Use 4 neighbor tracing instead of 8 neighbor";

    name = G_define_option();
    name->key = "map";
    name->description = "Raster map to be analyzed";
    name->type = TYPE_STRING;
    name->gisprompt = "old,cell,raster";
    name->required = YES;

    out = G_define_option();
    out->key = "out";
    out->description = "Name of output file to store patch data";
    out->type = TYPE_STRING;
    out->required = NO;

    if (G_parser(argc, argv))
	exit(EXIT_FAILURE);


    strcpy(choice->fn, name->answer);

    if (out->answer)
	strcpy(choice->out, out->answer);
    else
	strcpy(choice->out, "");

    /* if the 4 neighbor tracing flag -t
       is specified, then set the 
       choice->trace flag to 1 */

    choice->trace = 1;
    if (trace->answer)
	choice->trace = 0;

    /* if the -p flag is specified, then
       set the choice->perim2 flag to 0 */

    if (bound->answer)
	choice->perim2 = 0;
    else
	choice->perim2 = 1;

}

void parse_args(int argc, char** argv,
		char** input, char** field,
		int* history, int* columns, int *shell)
{
    int i;
    const char *answer;
    
    struct Option *input_opt, *field_opt;
    struct Flag *hist_flag, *col_flag, *shell_flag, *region_flag, *topo_flag;
    
    input_opt = G_define_standard_option(G_OPT_V_MAP);

    field_opt = G_define_standard_option(G_OPT_V_FIELD);
    
    hist_flag = G_define_flag();
    hist_flag->key = 'h';
    hist_flag->description = _("Print history instead of info and exit");
    hist_flag->guisection = _("Print");

    col_flag = G_define_flag();
    col_flag->key = 'c';
    col_flag->description =
	_("Print types/names of table columns for specified layer instead of info and exit");
    col_flag->guisection = _("Print");

    shell_flag = G_define_flag();
    shell_flag->key = 'g';
    shell_flag->description = _("Print basic info in shell script style");
    shell_flag->guisection = _("Print");

    region_flag = G_define_flag();
    region_flag->key = 'e';
    region_flag->description = _("Print also region info in shell script style");
    region_flag->guisection = _("Print");

    topo_flag = G_define_flag();
    topo_flag->key = 't';
    topo_flag->description = _("Print also topology info in shell script style");
    topo_flag->guisection = _("Print");

    if (G_parser(argc, argv))
	exit(EXIT_FAILURE);

    *input = G_store(input_opt->answer);
    *field = G_store(field_opt->answer);
    *history = hist_flag->answer ? TRUE : FALSE;
    *columns = col_flag->answer  ? TRUE : FALSE;
    i = 0;
    *shell = SHELL_NO;
    if (shell_flag->answer)
	*shell |= SHELL_BASIC;
    if (region_flag->answer)
	*shell |= SHELL_REGION;
    if (topo_flag->answer)
	*shell |= SHELL_TOPO;
}

int main(int argc, char *argv[])
{
    struct GModule *module;
    struct Option *map, *date;
    struct TimeStamp ts;
    char *name;
    int modify;

    G_gisinit(argv[0]);

    module = G_define_module();
    G_add_keyword(_("raster"));
    G_add_keyword(_("metadata"));
    G_add_keyword(_("timestamp"));
    module->label = _("Modifies a timestamp for a raster map.");
    module->description = _("Print/add/remove a timestamp for a raster map.");

    map = G_define_standard_option(G_OPT_R_MAP);

    date = G_define_option();
    date->key = "date";
    date->key_desc = "timestamp";
    date->required = NO;
    date->type = TYPE_STRING;
    date->label = _("Datetime, datetime1/datetime2, or 'none' to remove");
    date->description = _("Format: '15 jan 1994' (absolute) or '2 years' (relative)");
    
    if (G_parser(argc, argv))
	exit(EXIT_FAILURE);

    name = map->answer;

    modify = date->answer != NULL;

    if (!modify) {
	if (G_read_raster_timestamp(name, "", &ts) == 1) {
	    G__write_timestamp(stdout, &ts);
	    exit(EXIT_SUCCESS);
	}
	else
	    exit(EXIT_FAILURE);
    }
    if (strcmp(date->answer, "none") == 0) {
	G_remove_raster_timestamp(name);
	exit(EXIT_SUCCESS);
    }

    if (1 == G_scan_timestamp(&ts, date->answer)) {
	G_write_raster_timestamp(name, &ts);
	exit(EXIT_SUCCESS);
    }
    else
	G_fatal_error(_("Invalid timestamp"));

    exit(EXIT_SUCCESS);
}

void parse_args(int argc, char **argv,
		struct _options *options, struct _flags* flags)
{
    options->dsn = G_define_option();
    options->dsn->key = "dsn";
    options->dsn->type = TYPE_STRING;
    options->dsn->label = _("Name of input OGR or PostGIS data source");
    options->dsn->description = _("Examples:\n"
				  "\t\tESRI Shapefile: directory containing a shapefile\n"
				  "\t\tMapInfo File: directory containing a mapinfo file\n"
				  "\t\tPostGIS database: connection string, eg. 'PG:dbname=db user=grass'");
    options->dsn->required = YES;

    options->layer = G_define_option();
    options->layer->key = "layer";
    options->layer->type = TYPE_STRING;
    options->layer->required = NO;
    options->layer->multiple = NO;
    options->layer->label = _("Name of OGR layer or PostGIS feature table to be linked");
    options->layer->description = _("Examples:\n"
				    "\t\tESRI Shapefile: shapefile name\n"
				    "\t\tMapInfo File: mapinfo file name\n"
				    "\t\tPostGIS database: table name");
    options->layer->required = YES;
    options->layer->key_desc = "name";
    
    options->output = G_define_standard_option(G_OPT_V_OUTPUT);
    options->output->required = NO;
    options->output->description = _("Name for output GRASS vector map (default: input layer)");

    flags->format = G_define_flag();
    flags->format->key = 'f';
    flags->format->description = _("List supported formats and exit");
    flags->format->guisection = _("Print");
    flags->format->suppress_required = YES;

    flags->list = G_define_flag();
    flags->list->key = 'l';
    flags->list->description = _("List available layers in data source and exit");
    flags->list->guisection = _("Print");
    flags->list->suppress_required = YES;

    flags->tlist = G_define_flag();
    flags->tlist->key = 't';
    flags->tlist->label = _("List available layers including feature type "
			    "in data source and exit");
    flags->tlist->description = _("Format: layer name,type,projection check");
    flags->tlist->guisection = _("Print");
    flags->tlist->suppress_required = YES;

    flags->topo = G_define_standard_flag(G_FLG_V_TOPO);
    
    if (G_parser(argc, argv))
	exit(EXIT_FAILURE);
}

int parse(int argc, char *argv[], struct parms *parms)
{
    struct Option *group, *subgroup, *sigfile, *output;
    struct Option *blocksize;
    struct Flag *ml;

    group = G_define_standard_option(G_OPT_I_GROUP);

    subgroup = G_define_standard_option(G_OPT_I_SUBGROUP);

    sigfile = G_define_option();
    sigfile->key = "signaturefile";
    sigfile->label = _("Name of file containing signatures");
    sigfile->description = _("Generated by i.gensigset");
    sigfile->key_desc = "name";
    sigfile->required = YES;
    sigfile->type = TYPE_STRING;

    output = G_define_standard_option(G_OPT_R_OUTPUT);

    blocksize = G_define_option();
    blocksize->key = "blocksize";
    blocksize->description = _("Size of submatrix to process at one time");
    blocksize->required = NO;
    blocksize->type = TYPE_INTEGER;
    blocksize->answer = "128";

    ml = G_define_flag();
    ml->key = 'm';
    ml->description =
	_("Use maximum likelihood estimation (instead of smap)");

    if (G_parser(argc, argv))
	exit(EXIT_FAILURE);

    parms->ml = ml->answer;

    parms->output_map = output->answer;
    parms->group = group->answer;
    parms->subgroup = subgroup->answer;
    parms->sigfile = sigfile->answer;

    /* check all the inputs */
    if (!I_find_group(parms->group))
	G_fatal_error(_("Group <%s> not found"), parms->group);

    if (!I_find_subgroup(parms->group, parms->subgroup))
	G_fatal_error(_("Subgroup <%s> not found"), parms->subgroup);

    if (sscanf(blocksize->answer, "%d", &parms->blocksize) != 1
	|| parms->blocksize <= 8)
	parms->blocksize = 8;

    return 0;
}

void parse(int argc, char *argv[], struct Parms *parms)
{
    struct Option *maps, *fs;
    struct Flag *labels, *overlap;
    const char *name, *mapset;

    maps = G_define_option();

    maps->key = "maps";
    maps->key_desc = "map1,map2";
    maps->required = YES;
    maps->multiple = NO;
    maps->type = TYPE_STRING;
    maps->description = _("Maps for computing inter-class distances");
    maps->gisprompt = "old,cell,raster";

    fs = G_define_option();
    fs->key = "fs";
    fs->required = NO;
    fs->multiple = NO;
    fs->answer = ":";		/* colon is default output fs */
    fs->type = TYPE_STRING;
    fs->description = _("Output field separator");

    labels = G_define_flag();
    labels->key = 'l';
    labels->description = _("Include category labels in the output");

    overlap = G_define_flag();
    overlap->key = 'o';
    overlap->description =
	_("Report zero distance if rasters are overlapping");

    if (G_parser(argc, argv))
	exit(EXIT_FAILURE);

    name = parms->map1.name = maps->answers[0];
    mapset = parms->map1.mapset = G_find_raster2(name, "");
    if (mapset == NULL)
	G_fatal_error(_("Raster map <%s> not found"), name);

    parms->map1.fullname = G_fully_qualified_name(name, mapset);

    name = parms->map2.name = maps->answers[1];
    mapset = parms->map2.mapset = G_find_raster2(name, "");
    if (mapset == NULL)
	G_fatal_error(_("Raster map <%s> not found"), name);

    parms->map2.fullname = G_fully_qualified_name(name, mapset);

    parms->labels = labels->answer ? 1 : 0;
    parms->fs = fs->answer;
    parms->overlap = overlap->answer ? 1 : 0;
}