C++ G_define_flag函数代码示例

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;
}

static void parse_command_line(int argc, char **argv)
{
    struct Option *driver, *database;
    struct Flag *p, *s;
    struct GModule *module;
    const char *drv, *db;

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

    driver = G_define_standard_option(G_OPT_DB_DRIVER);
    driver->options = db_list_drivers();
    if ((drv = db_get_default_driver_name()))
	driver->answer = (char *) drv;

    database = G_define_standard_option(G_OPT_DB_DATABASE);
    if ((db = db_get_default_database_name()))
	database->answer = (char *) db;

    p = G_define_flag();
    p->key = 'p';
    p->description = _("Print tables and exit");

    s = G_define_flag();
    s->key = 's';
    s->description = _("System tables instead of user tables");

    /* Set description */
    module = G_define_module();
    G_add_keyword(_("database"));
    G_add_keyword(_("attribute table"));
    module->description = _("Lists all tables for a given database.");

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

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

void parse_args(struct opts *opt)
{
    opt->reverse = G_define_flag();
    opt->reverse->key = 'r';
    opt->reverse->description =
	_("Reverse transformation; 3D vector features to 2D");

    opt->table = G_define_flag();
    opt->table->key = 't';
    opt->table->description = _("Do not copy table");

    opt->input = G_define_standard_option(G_OPT_V_INPUT);

    opt->field = G_define_standard_option(G_OPT_V_FIELD_ALL);
    opt->field->guisection = _("Selection");

    opt->type = G_define_standard_option(G_OPT_V_TYPE);
    opt->type->options = "point,line,boundary,centroid";
    opt->type->answer = "point,line,boundary,centroid";
    opt->type->guisection = _("Selection");

    opt->output = G_define_standard_option(G_OPT_V_OUTPUT);

    opt->column = G_define_standard_option(G_OPT_DB_COLUMN);
    opt->column->label = _("Name of attribute column used for height");
    opt->column->description =
	_("Can be used for reverse transformation, to store height of points");
    opt->column->guisection = _("Height");

    opt->height = G_define_option();
    opt->height->key = "height";
    opt->height->type = TYPE_DOUBLE;
    opt->height->required = NO;
    opt->height->multiple = NO;
    opt->height->description = _("Fixed height for 3D vector features");
    opt->height->guisection = _("Height");
    
    return;
}

int main(int argc, char *argv[])
{
    struct GModule *module;
    struct
    {
	struct Option *map;
	struct Option *line;
	struct Option *null_str;
    } parms;
    struct Flag *coord;

    G_gisinit(argv[0]);

    module = G_define_module();
    G_add_keyword(_("raster"));
    G_add_keyword(_("transect"));
    module->description =
	_("Outputs raster map layer values lying along "
	  "user defined transect line(s).");

    parms.map = G_define_standard_option(G_OPT_R_MAP);
    parms.map->description = _("Raster map to be queried");

    parms.line = G_define_option();
    parms.line->key = "line";
    parms.line->key_desc = "east,north,azimuth,distance";
    parms.line->type = TYPE_STRING;
    parms.line->description = _("Transect definition");
    parms.line->required = YES;
    parms.line->multiple = YES;

    parms.null_str = G_define_standard_option(G_OPT_M_NULL_VALUE);
    parms.null_str->answer = "*";

    coord = G_define_flag();
    coord->key = 'g';
    coord->description =
	_("Output easting and northing in first two columns of four column output");

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

    return profile(coord->answer,
		   parms.map->answer,
		   parms.null_str->answer,
		   parms.line->answers) != 0;
}

void parse_toplevel(struct context *ctx, const char *cmd)
{
    char **tokens;
    
    if (G_strcasecmp(cmd, "module") == 0) {
	ctx->state = S_MODULE;
	ctx->module = G_define_module();
	return;
    }

    if (G_strcasecmp(cmd, "flag") == 0) {
	ctx->state = S_FLAG;
	ctx->flag = G_define_flag();
	if (!ctx->first_flag)
	    ctx->first_flag = ctx->flag;
	return;
    }

    if (G_strncasecmp(cmd, "option", strlen("option")) == 0) {
	ctx->state = S_OPTION;
	
	tokens = G_tokenize(cmd, " ");
	if (G_number_of_tokens(tokens) > 1) {
	    /* standard option */
	    ctx->option = define_standard_option(tokens[1]);
	}
	else { 
	    ctx->option = G_define_option();
	}
	
	if (!ctx->first_option)
		ctx->first_option = ctx->option;
	
	G_free_tokens(tokens);
	return;
    }

    if (G_strcasecmp(cmd, "rules") == 0) {
	ctx->state = S_RULES;
	return;
    }

    fprintf(stderr, _("Unknown command \"%s\" at line %d\n"), cmd, ctx->line);
}

int main(int argc, char *argv[])
{
    int i, type, stat;
    int day, yr, Out_proj;
    int out_zone = 0;
    int overwrite;		/* overwrite output map */
    const char *mapset;
    const char *omap_name, *map_name, *iset_name, *iloc_name;
    struct pj_info info_in;
    struct pj_info info_out;
    const char *gbase;
    char date[40], mon[4];
    struct GModule *module;
    struct Option *omapopt, *mapopt, *isetopt, *ilocopt, *ibaseopt, *smax;
    struct Key_Value *in_proj_keys, *in_unit_keys;
    struct Key_Value *out_proj_keys, *out_unit_keys;
    struct line_pnts *Points, *Points2;
    struct line_cats *Cats;
    struct Map_info Map;
    struct Map_info Out_Map;
    struct bound_box src_box, tgt_box;
    int nowrap = 0, recommend_nowrap = 0;
    double lmax;
    struct
    {
	struct Flag *list;	/* list files in source location */
	struct Flag *transformz;	/* treat z as ellipsoidal height */
	struct Flag *wrap;		/* latlon output: wrap to 0,360 */
	struct Flag *no_topol;		/* do not build topology */
    } flag;

    G_gisinit(argv[0]);

    module = G_define_module();
    G_add_keyword(_("vector"));
    G_add_keyword(_("projection"));
    G_add_keyword(_("transformation"));
    G_add_keyword(_("import"));
    module->description = _("Re-projects a vector map from one location to the current location.");

    /* set up the options and flags for the command line parser */

    ilocopt = G_define_standard_option(G_OPT_M_LOCATION);
    ilocopt->required = YES;
    ilocopt->label = _("Location containing input vector map");
    ilocopt->guisection = _("Source");
    
    isetopt = G_define_standard_option(G_OPT_M_MAPSET);
    isetopt->label = _("Mapset containing input vector map");
    isetopt->description = _("Default: name of current mapset");
    isetopt->guisection = _("Source");

    mapopt = G_define_standard_option(G_OPT_V_INPUT);
    mapopt->required = NO;
    mapopt->label = _("Name of input vector map to re-project");
    mapopt->description = NULL;
    mapopt->guisection = _("Source");
    
    ibaseopt = G_define_standard_option(G_OPT_M_DBASE);
    ibaseopt->label = _("Path to GRASS database of input location");
    
    smax = G_define_option();
    smax->key = "smax";
    smax->type = TYPE_DOUBLE;
    smax->required = NO;
    smax->answer = "10000";
    smax->label = _("Maximum segment length in meters in output vector map");
    smax->description = _("Increases accuracy of reprojected shapes, disable with smax=0");
    smax->guisection = _("Target");

    omapopt = G_define_standard_option(G_OPT_V_OUTPUT);
    omapopt->required = NO;
    omapopt->description = _("Name for output vector map (default: input)");
    omapopt->guisection = _("Target");

    flag.list = G_define_flag();
    flag.list->key = 'l';
    flag.list->description = _("List vector maps in input mapset and exit");

    flag.transformz = G_define_flag();
    flag.transformz->key = 'z';
    flag.transformz->description = _("3D vector maps only");
    flag.transformz->label =
	_("Assume z coordinate is ellipsoidal height and "
	  "transform if possible");
    flag.transformz->guisection = _("Target");

    flag.wrap = G_define_flag();
    flag.wrap->key = 'w';
    flag.wrap->description = _("Latlon output only, default is -180,180");
    flag.wrap->label =
	_("Disable wrapping to -180,180 for latlon output");
    flag.transformz->guisection = _("Target");

    flag.no_topol = G_define_flag();
    flag.no_topol->key = 'b';
    flag.no_topol->label = _("Do not build vector topology");
    flag.no_topol->description = _("Recommended for massive point projection");

    /* The parser checks if the map already exists in current mapset,
//.........这里部分代码省略.........

int main(int argc, char *argv[])
{
    struct Map_info In, Out;
    static struct line_pnts *Points;
    struct line_cats *Cats;
    struct GModule *module;	/* GRASS module for parsing arguments */
    struct Option *map_in, *map_out;
    struct Option *cat_opt, *field_opt, *where_opt, *abcol, *afcol;
    struct Option *iter_opt, *error_opt;
    struct Flag *geo_f, *add_f;
    int chcat, with_z;
    int layer, mask_type;
    struct varray *varray;
    dglGraph_s *graph;
    int i, geo, nnodes, nlines, j, max_cat;
    char buf[2000], *covered;

    /* initialize GIS environment */
    G_gisinit(argv[0]);		/* reads grass env, stores program name to G_program_name() */

    /* initialize module */
    module = G_define_module();
    module->keywords = _("vector, network, centrality measures");
    module->description =
	_("Computes degree, centrality, betweeness, closeness and eigenvector "
	 "centrality measures in the network.");

    /* Define the different options as defined in gis.h */
    map_in = G_define_standard_option(G_OPT_V_INPUT);
    field_opt = G_define_standard_option(G_OPT_V_FIELD);

    map_out = G_define_standard_option(G_OPT_V_OUTPUT);

    cat_opt = G_define_standard_option(G_OPT_V_CATS);
    cat_opt->guisection = _("Selection");
    where_opt = G_define_standard_option(G_OPT_WHERE);
    where_opt->guisection = _("Selection");

    afcol = G_define_standard_option(G_OPT_COLUMN);
    afcol->key = "afcolumn";
    afcol->required = NO;
    afcol->description =
	_("Name of arc forward/both direction(s) cost column");
    afcol->guisection = _("Cost");

    abcol = G_define_standard_option(G_OPT_COLUMN);
    abcol->key = "abcolumn";
    abcol->required = NO;
    abcol->description = _("Name of arc backward direction cost column");
    abcol->guisection = _("Cost");

    deg_opt = G_define_standard_option(G_OPT_COLUMN);
    deg_opt->key = "degree";
    deg_opt->required = NO;
    deg_opt->description = _("Name of degree centrality column");
    deg_opt->guisection = _("Columns");

    close_opt = G_define_standard_option(G_OPT_COLUMN);
    close_opt->key = "closeness";
    close_opt->required = NO;
    close_opt->description = _("Name of closeness centrality column");
    close_opt->guisection = _("Columns");

    betw_opt = G_define_standard_option(G_OPT_COLUMN);
    betw_opt->key = "betweenness";
    betw_opt->required = NO;
    betw_opt->description = _("Name of betweenness centrality column");
    betw_opt->guisection = _("Columns");

    eigen_opt = G_define_standard_option(G_OPT_COLUMN);
    eigen_opt->key = "eigenvector";
    eigen_opt->required = NO;
    eigen_opt->description = _("Name of eigenvector centrality column");
    eigen_opt->guisection = _("Columns");

    iter_opt = G_define_option();
    iter_opt->key = "iterations";
    iter_opt->answer = "1000";
    iter_opt->type = TYPE_INTEGER;
    iter_opt->required = NO;
    iter_opt->description =
	_("Maximum number of iterations to compute eigenvector centrality");

    error_opt = G_define_option();
    error_opt->key = "error";
    error_opt->answer = "0.1";
    error_opt->type = TYPE_DOUBLE;
    error_opt->required = NO;
    error_opt->description =
	_("Cummulative error tolerance for eigenvector centrality");

    geo_f = G_define_flag();
    geo_f->key = 'g';
    geo_f->description =
	_("Use geodesic calculation for longitude-latitude locations");

    add_f = G_define_flag();
    add_f->key = 'a';
    add_f->description = _("Add points on nodes");

//.........这里部分代码省略.........

//.........这里部分代码省略.........

    opt6 = G_define_option();
    opt6->key = "unknown_color";
    opt6->type = TYPE_STRING;
    opt6->required = NO;
    opt6->answer = "red";
    opt6->gisprompt = "old_color,color,color_none";
    opt6->description = _("Color for showing unknown information");
    opt6->guisection = _("Colors");

    opt9 = G_define_option();
    opt9->key = "skip";
    opt9->type = TYPE_INTEGER;
    opt9->required = NO;
    opt9->answer = "1";
    opt9->description = _("Draw arrow every Nth grid cell");

    opt7 = G_define_option();
    opt7->key = "magnitude_map";
    opt7->type = TYPE_STRING;
    opt7->required = NO;
    opt7->multiple = NO;
    opt7->gisprompt = "old,cell,raster";
    opt7->description =
	_("Raster map containing values used for arrow length");

    opt8 = G_define_option();
    opt8->key = "scale";
    opt8->type = TYPE_DOUBLE;
    opt8->required = NO;
    opt8->answer = "1.0";
    opt8->description = _("Scale factor for arrows (magnitude map)");

    align = G_define_flag();
    align->key = 'a';
    align->description = _("Align grids with raster cells");


    /* Check command line */
    if (G_parser(argc, argv))
	exit(EXIT_FAILURE);


    layer_name = opt1->answer;

    arrow_color = D_translate_color(opt3->answer);
    x_color = D_translate_color(opt5->answer);
    unknown_color = D_translate_color(opt6->answer);

    if (strcmp("none", opt4->answer) == 0)
	grid_color = -1;
    else
	grid_color = D_translate_color(opt4->answer);


    if (strcmp("grass", opt2->answer) == 0)
	map_type = 1;
    else if (strcmp("agnps", opt2->answer) == 0)
	map_type = 2;
    else if (strcmp("answers", opt2->answer) == 0)
	map_type = 3;
    else if (strcmp("compass", opt2->answer) == 0)
	map_type = 4;


    scale = atof(opt8->answer);

/* ************************************************************************* */
void set_params()
{
    param.input = G_define_standard_option(G_OPT_R3_INPUTS);
    param.input->required = NO;
    param.input->description =
	_("3D raster map(s) to be converted to VTK-ASCII data format");

    param.output = G_define_standard_option(G_OPT_F_OUTPUT);
    param.output->required = NO;
    param.output->description = _("Name for VTK-ASCII output file");

    param.null_val = G_define_option();
    param.null_val->key = "null";
    param.null_val->type = TYPE_DOUBLE;
    param.null_val->required = NO;
    param.null_val->description =
	_("Float value to represent no data cell/points");
    param.null_val->answer = "-99999.99";

    param.point = G_define_flag();
    param.point->key = 'p';
    param.point->description =
	_("Create VTK pointdata instead of VTK celldata (celldata is default)");

    param.top = G_define_option();
    param.top->key = "top";
    param.top->type = TYPE_STRING;
    param.top->required = NO;
    param.top->gisprompt = "old,cell,raster";
    param.top->multiple = NO;
    param.top->guisection = "Surface options";
    param.top->description = _("Top surface 2D raster map");

    param.bottom = G_define_option();
    param.bottom->key = "bottom";
    param.bottom->type = TYPE_STRING;
    param.bottom->required = NO;
    param.bottom->gisprompt = "old,cell,raster";
    param.bottom->multiple = NO;
    param.bottom->guisection = "Surface options";
    param.bottom->description = _("Bottom surface 2D raster map");

    param.structgrid = G_define_flag();
    param.structgrid->key = 's';
    param.structgrid->guisection = "Surface options";
    param.structgrid->description =
	_("Create 3D elevation output with a top and a bottom surface, both raster maps are required.");


    param.rgbmaps = G_define_option();
    param.rgbmaps->key = "rgbmaps";
    param.rgbmaps->type = TYPE_STRING;
    param.rgbmaps->required = NO;
    param.rgbmaps->gisprompt = "old,grid3,3d-raster";
    param.rgbmaps->multiple = YES;
    param.rgbmaps->guisection = "Advanced options";
    param.rgbmaps->description =
	_("Three (R,G,B) 3D raster maps to create RGB values [redmap,greenmap,bluemap]");

    param.vectormaps = G_define_option();
    param.vectormaps->key = "vectormaps";
    param.vectormaps->type = TYPE_STRING;
    param.vectormaps->required = NO;
    param.vectormaps->gisprompt = "old,grid3,3d-raster";
    param.vectormaps->multiple = YES;
    param.vectormaps->guisection = "Advanced options";
    param.vectormaps->description =
	_("Three (x,y,z) 3D raster maps to create vector values [xmap,ymap,zmap]");

    param.elevscale = G_define_option();
    param.elevscale->key = "elevscale";
    param.elevscale->type = TYPE_DOUBLE;
    param.elevscale->required = NO;
    param.elevscale->description = _("Scale factor for elevation");
    param.elevscale->guisection = "Advanced options";
    param.elevscale->answer = "1.0";

    param.decimals = G_define_option();
    param.decimals->key = "dp";
    param.decimals->type = TYPE_INTEGER;
    param.decimals->required = NO;
    param.decimals->multiple = NO;
    param.decimals->answer = "12";
    param.decimals->options = "0-20";
    param.decimals->guisection = "Advanced options";
    param.decimals->description =
	_("Number of significant digits (floating point only)");

    param.mask = G_define_flag();
    param.mask->key = 'm';
    param.mask->guisection = "Advanced options";
    param.mask->description = _("Use 3D raster mask (if exists) with input maps");

    param.origin = G_define_flag();
    param.origin->key = 'o';
    param.origin->guisection = "Advanced options";
    param.origin->description = _("Scale factor affects the origin");

    param.coorcorr = G_define_flag();
//.........这里部分代码省略.........

int main(int argc, char *argv[])
{
    struct GModule *module;
    struct Option *start_opt, *select_opt, *stop_opt, *output_opt,
        *width_opt, *height_opt, *bgcolor_opt, *res_opt;
    struct Flag *list_flag, *selected_flag, *select_flag, *release_flag, 
        *cmd_flag, *truecolor_flag, *update_flag, *x_flag, *sfile_flag;
    
    int nopts, ret;
    const char *mon;
    
    G_gisinit(argv[0]);
    
    module = G_define_module();
    G_add_keyword(_("display"));
    G_add_keyword(_("graphics"));
    G_add_keyword(_("monitors"));
    module->description = _("Controls graphics display monitors from the command line.");
    
    start_opt = G_define_option();
    start_opt->key = "start";
    start_opt->type = TYPE_STRING;
    start_opt->description = _("Name of monitor to start");
    start_opt->options = "wx0,wx1,wx2,wx3,wx4,wx5,wx6,wx7,png,ps,html,cairo";
    start_opt->guisection = _("Manage");
    
    stop_opt = G_define_option();
    stop_opt->key = "stop";
    stop_opt->type = TYPE_STRING;
    stop_opt->description = _("Name of monitor to stop");
    stop_opt->options = "wx0,wx1,wx2,wx3,wx4,wx5,wx6,wx7,png,ps,html,cairo";
    stop_opt->guisection = _("Manage");

    select_opt = G_define_option();
    select_opt->key = "select";
    select_opt->type = TYPE_STRING;
    select_opt->description = _("Name of monitor to select");
    select_opt->options = "wx0,wx1,wx2,wx3,wx4,wx5,wx6,wx7,png,ps,html,cairo";
    select_opt->guisection = _("Manage");

    width_opt = G_define_option();
    width_opt->key = "width";
    width_opt->label = _("Width for display monitor if not set by GRASS_RENDER_WIDTH");
    width_opt->description = _("Default value: 720");
    width_opt->type = TYPE_INTEGER;
    width_opt->key_desc = "value";
    width_opt->guisection = _("Settings");

    height_opt = G_define_option();
    height_opt->key = "height";
    height_opt->label = _("Height for display monitor if not set by GRASS_RENDER_HEIGHT");
    height_opt->description = _("Default value: 480");
    height_opt->type = TYPE_INTEGER;
    height_opt->key_desc = "value";
    height_opt->guisection = _("Settings");

    res_opt = G_define_option();
    res_opt->key = "resolution";
    res_opt->label = _("Dimensions of display monitor versus current size");
    res_opt->description = _("Example: resolution=2 enlarge display monitor twice to 1280x960"); 
    res_opt->type = TYPE_INTEGER;
    res_opt->key_desc = "value";
    res_opt->guisection = _("Settings");

    bgcolor_opt = G_define_standard_option(G_OPT_CN);
    bgcolor_opt->key = "bgcolor";
    bgcolor_opt->label = _("Background color");
    bgcolor_opt->answer = DEFAULT_BG_COLOR;
    bgcolor_opt->guisection = _("Settings");

    output_opt = G_define_standard_option(G_OPT_F_OUTPUT);
    output_opt->required = NO;
    output_opt->label = _("Name for output file (when starting new monitor)");
    output_opt->description = _("Ignored for 'wx' monitors");
    output_opt->guisection = _("Settings");
    
    list_flag = G_define_flag();
    list_flag->key = 'l';
    list_flag->description = _("List running monitors and exit");
    list_flag->guisection = _("Print");

    selected_flag = G_define_flag();
    selected_flag->key = 'p';
    selected_flag->description = _("Print name of currently selected monitor and exit");
    selected_flag->guisection = _("Print");

    cmd_flag = G_define_flag();
    cmd_flag->key = 'c';
    cmd_flag->description = _("Print commands for currently selected monitor and exit");
    cmd_flag->guisection = _("Print");

    sfile_flag = G_define_flag();
    sfile_flag->key = 'g';
    sfile_flag->description =
	_("Print path to support files of currently selected monitor and exit");

    select_flag = G_define_flag();
    select_flag->key = 's';
    select_flag->description = _("Do not automatically select when starting");
    select_flag->guisection = _("Manage");
//.........这里部分代码省略.........

int main(int argc, char *argv[])
{
    const char *input, *source, *output;
    char *title;
    struct Cell_head cellhd;
    GDALDatasetH hDS;
    GDALRasterBandH hBand;
    struct GModule *module;
    struct {
	struct Option *input, *source, *output, *band, *title;
    } parm;
    struct {
	struct Flag *o, *f, *e, *r, *h, *v;
    } flag;
    int min_band, max_band, band;
    struct band_info info;
    int flip;
    struct Ref reference;

    G_gisinit(argv[0]);

    module = G_define_module();
    G_add_keyword(_("raster"));
    G_add_keyword(_("import"));
    G_add_keyword(_("input"));
    G_add_keyword(_("external"));
    module->description =
	_("Links GDAL supported raster data as a pseudo GRASS raster map.");

    parm.input = G_define_standard_option(G_OPT_F_INPUT);
    parm.input->description = _("Name of raster file to be linked");
    parm.input->required = NO;
    parm.input->guisection = _("Input");

    parm.source = G_define_option();
    parm.source->key = "source";
    parm.source->description = _("Name of non-file GDAL data source");
    parm.source->required = NO;
    parm.source->type = TYPE_STRING;
    parm.source->key_desc = "name";
    parm.source->guisection = _("Input");
    
    parm.output = G_define_standard_option(G_OPT_R_OUTPUT);
    
    parm.band = G_define_option();
    parm.band->key = "band";
    parm.band->type = TYPE_INTEGER;
    parm.band->required = NO;
    parm.band->description = _("Band to select (default: all)");
    parm.band->guisection = _("Input");

    parm.title = G_define_option();
    parm.title->key = "title";
    parm.title->key_desc = "phrase";
    parm.title->type = TYPE_STRING;
    parm.title->required = NO;
    parm.title->description = _("Title for resultant raster map");
    parm.title->guisection = _("Metadata");

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

    flag.o = G_define_flag();
    flag.o->key = 'o';
    flag.o->description =
	_("Override projection (use location's projection)");

    flag.e = G_define_flag();
    flag.e->key = 'e';
    flag.e->description = _("Extend location extents based on new dataset");

    flag.r = G_define_flag();
    flag.r->key = 'r';
    flag.r->description = _("Require exact range");

    flag.h = G_define_flag();
    flag.h->key = 'h';
    flag.h->description = _("Flip horizontally");

    flag.v = G_define_flag();
    flag.v->key = 'v';
    flag.v->description = _("Flip vertically");

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

    GDALAllRegister();

    if (flag.f->answer) {
	list_formats();
	exit(EXIT_SUCCESS);
    }

    input = parm.input->answer;
    source = parm.source->answer;
    output = parm.output->answer;

//.........这里部分代码省略.........

int main(int argc, char **argv)
{
    struct Flag *printattributes, *topo_flag, *shell_flag;
    struct Option *map_opt, *field_opt, *coords_opt, *maxdistance;
    struct Cell_head window;
    struct GModule *module;
    char buf[2000];
    int i, level, ret;
    int *field;
    double xval, yval, xres, yres, maxd, x;
    double EW_DIST1, EW_DIST2, NS_DIST1, NS_DIST2;
    char nsres[30], ewres[30];
    char ch;

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

    module = G_define_module();
    G_add_keyword(_("vector"));
    G_add_keyword(_("position"));
    G_add_keyword(_("querying"));
    module->description = _("Queries a vector map at given locations.");

    map_opt = G_define_standard_option(G_OPT_V_MAPS);

    field_opt = G_define_standard_option(G_OPT_V_FIELD_ALL);
    
    coords_opt = G_define_standard_option(G_OPT_M_EN);
    coords_opt->label = _("Coordinates for query");
    coords_opt->description = _("If not given read from standard input");

    maxdistance = G_define_option();
    maxdistance->type = TYPE_DOUBLE;
    maxdistance->key = "distance";
    maxdistance->answer = "0";
    maxdistance->multiple = NO;
    maxdistance->description = _("Query threshold distance");

    topo_flag = G_define_flag();
    topo_flag->key = 'd';
    topo_flag->description = _("Print topological information (debugging)");
    topo_flag->guisection = _("Print");

    printattributes = G_define_flag();
    printattributes->key = 'a';
    printattributes->description = _("Print attribute information");
    printattributes->guisection = _("Print");

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

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

    if (map_opt->answers && map_opt->answers[0])
	vect = map_opt->answers;

    maxd = atof(maxdistance->answer);

    /*  
     *  fprintf(stdout, maxdistance->answer);
     *  fprintf(stdout, "Maxd is %f", maxd);
     *  fprintf(stdout, xcoord->answer);
     *  fprintf(stdout, "xval is %f", xval);
     *  fprintf(stdout, ycoord->answer);
     *  fprintf(stdout, "yval is %f", yval);
     */

    if (maxd == 0.0) {
	G_get_window(&window);
	x = window.proj;
	G_format_resolution(window.ew_res, ewres, x);
	G_format_resolution(window.ns_res, nsres, x);
	EW_DIST1 =
	    G_distance(window.east, window.north, window.west, window.north);
	/* EW Dist at South Edge */
	EW_DIST2 =
	    G_distance(window.east, window.south, window.west, window.south);
	/* NS Dist at East edge */
	NS_DIST1 =
	    G_distance(window.east, window.north, window.east, window.south);
	/* NS Dist at West edge */
	NS_DIST2 =
	    G_distance(window.west, window.north, window.west, window.south);
	xres = ((EW_DIST1 + EW_DIST2) / 2) / window.cols;
	yres = ((NS_DIST1 + NS_DIST2) / 2) / window.rows;
	if (xres > yres)
	    maxd = xres;
	else
	    maxd = yres;
    }

    /* Look at maps given on command line */
    if (vect) {

	for (i = 0; vect[i]; i++)
	    ;
	nvects = i;
//.........这里部分代码省略.........

int main(int argc, char **argv)
{
    static DCELL *count, *sum, *mean, *sumu, *sum2, *sum3, *sum4, *min, *max;
    DCELL *result;
    struct GModule *module;
    struct {
	struct Option *method, *basemap, *covermap, *output;
    } opt;
    struct {
	struct Flag *c, *r;
    } flag;
    char methods[2048];
    const char *basemap, *covermap, *output;
    int usecats;
    int reclass;
    int base_fd, cover_fd;
    struct Categories cats;
    CELL *base_buf;
    DCELL *cover_buf;
    struct Range range;
    CELL mincat, ncats;
    int method;
    int rows, cols;
    int row, col, i;

    G_gisinit(argv[0]);

    module = G_define_module();
    G_add_keyword(_("raster"));
    G_add_keyword(_("statistics"));
    module->description =
	_("Calculates category or object oriented statistics (accumulator-based statistics).");

    opt.basemap = G_define_standard_option(G_OPT_R_BASE);

    opt.covermap = G_define_standard_option(G_OPT_R_COVER);

    opt.method = G_define_option();
    opt.method->key = "method";
    opt.method->type = TYPE_STRING;
    opt.method->required = YES;
    opt.method->description = _("Method of object-based statistic");

    for (i = 0; menu[i].name; i++) {
	if (i)
	    strcat(methods, ",");
	else
	    *(methods) = 0;
	strcat(methods, menu[i].name);
    }
    opt.method->options = G_store(methods);

    for (i = 0; menu[i].name; i++) {
	if (i)
	    strcat(methods, ";");
	else
	    *(methods) = 0;
	strcat(methods, menu[i].name);
	strcat(methods, ";");
	strcat(methods, menu[i].text);
    }
    opt.method->descriptions = G_store(methods);

    opt.output = G_define_standard_option(G_OPT_R_OUTPUT);
    opt.output->description = _("Resultant raster map");
    opt.output->required = YES;

    flag.c = G_define_flag();
    flag.c->key = 'c';
    flag.c->description =
	_("Cover values extracted from the category labels of the cover map");

    flag.r = G_define_flag();
    flag.r->key = 'r';
    flag.r->description =
	_("Create reclass map with statistics as category labels");

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

    basemap = opt.basemap->answer;
    covermap = opt.covermap->answer;
    output = opt.output->answer;
    usecats = flag.c->answer;
    reclass = flag.r->answer;

    for (i = 0; menu[i].name; i++)
	if (strcmp(menu[i].name, opt.method->answer) == 0)
	    break;

    if (!menu[i].name) {
	G_warning(_("<%s=%s> unknown %s"), opt.method->key, opt.method->answer,
		  opt.method->key);
	G_usage();
	exit(EXIT_FAILURE);
    }

    method = menu[i].val;

    base_fd = Rast_open_old(basemap, "");
//.........这里部分代码省略.........

int main(int argc, char **argv)
{
    struct GModule *module;
    struct Option *bg_color_opt, *fg_color_opt, *coords, *n_arrow, *fsize,
        *width_opt, *rotation_opt, *lbl_opt;
    struct Flag *no_text, *rotate_text, *rads;
    double east, north;
    double rotation;
    double fontsize, line_width;
    int rot_with_text;

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

    module = G_define_module();
    G_add_keyword(_("display"));
    G_add_keyword(_("cartography"));
    module->description =
        _("Displays a north arrow on the graphics monitor.");

    n_arrow = G_define_option();
    n_arrow->key = "style";
    n_arrow->description = _("North arrow style");
    n_arrow->options =
        "1a,1b,2,3,4,5,6,7a,7b,8a,8b,9,fancy_compass,basic_compass,arrow1,arrow2,arrow3,star";
    G_asprintf((char **)&(n_arrow->descriptions),
               "1a;%s;" "1b;%s;" "2;%s;" "3;%s;" "4;%s;" "5;%s;" "6;%s;"
               "7a;%s;" "7b;%s;" "8a;%s;" "8b;%s;" "9;%s;" "fancy_compass;%s;"
               "basic_compass;%s;" "arrow1;%s;" "arrow2;%s;" "arrow3;%s;"
               "star;%s;",
               _("Two color arrowhead"),
               _("Two color arrowhead with circle"),
               _("Narrow with blending N"), _("Long with small arrowhead"),
               _("Inverted narrow inside a circle"),
               _("Triangle and N inside a circle"),
               _("Arrowhead and N inside a circle"),
               _("Tall half convex arrowhead"),
               _("Tall half concave arrowhead"), _("Thin arrow in a circle"),
               _("Fat arrow in a circle"), _("One color arrowhead"),
               _("Fancy compass"), _("Basic compass"), _("Simple arrow"),
               _("Thin arrow"), _("Fat arrow"), _("4-point star"));
    n_arrow->answer = "1a";
    n_arrow->guisection = _("Style");
    n_arrow->gisprompt = "old,northarrow,northarrow";

    coords = G_define_option();
    coords->key = "at";
    coords->key_desc = "x,y";
    coords->type = TYPE_DOUBLE;
    coords->answer = "85.0,15.0";
    coords->options = "0-100";
    coords->label =
        _("Screen coordinates of the rectangle's top-left corner");
    coords->description = _("(0,0) is lower-left of the display frame");

    rotation_opt = G_define_option();
    rotation_opt->key = "rotation";
    rotation_opt->type = TYPE_DOUBLE;
    rotation_opt->required = NO;
    rotation_opt->answer = "0";
    rotation_opt->description =
        _("Rotation angle in degrees (counter-clockwise)");

    lbl_opt = G_define_option();
    lbl_opt->key = "label";
    lbl_opt->required = NO;
    lbl_opt->answer = "N";
    lbl_opt->description =
        _("Displayed letter on the top of arrow");
    lbl_opt->guisection = _("Text");

    fg_color_opt = G_define_standard_option(G_OPT_C);
    fg_color_opt->label = _("Line color");
    fg_color_opt->guisection = _("Colors");

    bg_color_opt = G_define_standard_option(G_OPT_CN);
    bg_color_opt->key = "fill_color";
    bg_color_opt->label = _("Fill color");
    bg_color_opt->answer = _("black");
    bg_color_opt->guisection = _("Colors");

    width_opt = G_define_option();
    width_opt->key = "width";
    width_opt->type = TYPE_DOUBLE;
    width_opt->answer = "0";
    width_opt->description = _("Line width");

    fsize = G_define_option();
    fsize->key = "fontsize";
    fsize->type = TYPE_DOUBLE;
    fsize->required = NO;
    fsize->answer = "14";
    fsize->options = "1-360";
    fsize->description = _("Font size");
    fsize->guisection = _("Text");

    no_text = G_define_flag();
    no_text->key = 't';
    no_text->description = _("Draw the symbol without text");
    no_text->guisection = _("Text");
//.........这里部分代码省略.........

int main(int argc, char *argv[])
{
    struct Option *type, *rc_file;
    struct Flag *update, *nolaunch;
    struct GModule *module;
    const char *gui_type_env;
    char progname[GPATH_MAX];
    char *desc;

    G_gisinit(argv[0]);

    module = G_define_module();
    G_add_keyword(_("general"));
    G_add_keyword(_("gui"));
    G_add_keyword(_("user interface"));
    module->label =
	_("Launches a GRASS graphical user interface (GUI) session.");
    module->description = _("And updates default user interface settings.");

    type = G_define_option();
    type->key = "ui";
    type->type = TYPE_STRING;
    type->label = _("User interface");
    type->description = _("Default value: GRASS_GUI if defined otherwise wxpython");
    desc = NULL;
    G_asprintf(&desc,
	        "wxpython;%s;text;%s",
	        _("wxPython based GUI (wxGUI)"),
	        _("command line interface only"));
    type->descriptions = desc;
    type->options = "wxpython,text";
    type->guisection = _("Type");
    
    rc_file = G_define_standard_option(G_OPT_F_INPUT);
    rc_file->key = "workspace";
    rc_file->required = NO;
    rc_file->key_desc = "name.gxw";
    rc_file->description = _("Name of workspace file to load on start-up (valid only for wxGUI)");

    update = G_define_flag();
    update->key = 'd';
    update->description = _("Update default user interface settings");
    update->guisection = _("Default");

    nolaunch = G_define_flag();
    nolaunch->key = 'n';
    nolaunch->description =
	_("Do not launch GUI after updating the default user interface settings");
    nolaunch->guisection = _("Default");

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


    if (type->answer && strcmp(type->answer, "text") == 0 &&
	!nolaunch->answer)
	nolaunch->answer = TRUE;
    
    if (nolaunch->answer && !update->answer)
	update->answer = TRUE;
    
    gui_type_env = G__getenv("GUI");

    if (!type->answer) {
	if (gui_type_env && strcmp(gui_type_env, "text")) {
	    type->answer = G_store(gui_type_env);
	}
	else {
	    type->answer = "wxpython";
	}
    }

    if (((gui_type_env && update->answer) &&
	 strcmp(gui_type_env, type->answer) != 0) || !gui_type_env) {
	G_setenv("GUI", type->answer);
	G_message(_("<%s> is now the default GUI"), type->answer);
    }
    else {
	if(update->answer)
	    if(gui_type_env) {
		G_debug(1, "No change: old gui_type_env=[%s], new type->ans=[%s]",
			gui_type_env, type->answer);
	    }
    }

    if(nolaunch->answer)
	exit(EXIT_SUCCESS);


    G_message(_("Launching <%s> GUI in the background, please wait..."), type->answer);

    if (strcmp(type->answer, "wxpython") == 0) {
	sprintf(progname, "%s/gui/wxpython/wxgui.py", G_gisbase());
	if (rc_file->answer) {
	    G_spawn_ex(getenv("GRASS_PYTHON"), getenv("GRASS_PYTHON"), progname,
		    "--workspace", rc_file->answer, SF_BACKGROUND, NULL);
	}
	else {
	    G_spawn_ex(getenv("GRASS_PYTHON"), getenv("GRASS_PYTHON"), progname,
		    SF_BACKGROUND, NULL);
//.........这里部分代码省略.........