#include "sph2random.h"

void disp_help()
{
	cout << "sph2random - v0.1 data interpolation under the spherical coordinates" << endl
		<< "Author: zhangyi.cugwuhan@gmail.com" << endl << endl
		<< "usage: sph2random -t<grid-table>[+d<x-col>,<y-col>,<val-col>] -l<random-loc>[+d<x-col>,<y-col>[,<z-col>]] -i<dlon>/<dlat> -c<start-corner> [-s] [-h] > output-file" << endl
		<< "-t\tinput grid table. a +d option could be attached to the filename to select data columns of the input data, the default is 0,1,2. Note that any line starts with '#' will be skipped" << endl
		<< "-l\tinput spherical locations, a +d option could be attached to the filename to select data columns of the input data, the default is 0,1. Note that any line starts with '#' will be skipped" << endl
		<< "-i\tdata intervals" << endl
		<< "-c\tstart corner of the grid data, 'leftTopo' (default) or 'leftDown'" << endl
		<< "-s\tconvert input coordinates to spherical coordinates" << endl
		<< "-h\tshow this info" << endl;
}

int main(int argc, char** argv)
{
	char infilename[1024] = "NULL";
	char infileloc[1024] = "NULL";
	char interval[1024] = "NULL";
	char startPoint[1024] = "leftTopo";
	char use_sc[1024] = "no";

	opterr = 0; //内置参数 若不为0则会在发生遭遇错误时输出一条信息到屏幕

	int curr;
	/*循环拾取参数 最后一个参数为-1 需要变量的参数后跟一个冒号 可有可无参数跟两个冒号*/
	while((curr = getopt(argc,argv,"hst:l:i:c:")) != -1)
	{
		/*匹配命令*/
		switch (curr)
		{
			case 'h': //显示帮助信息
				disp_help();
				break;
			case 's':
				strcpy(use_sc,"yes");
				break;
			case 't':
				if (1!=sscanf(optarg,"%[^\0]",infilename))
				{
					cout << "error ==> wrong format of " << optarg << endl;
				}
				break;
			case 'l':
				if (1!=sscanf(optarg,"%[^\0]",infileloc))
				{
					cout << "error ==> wrong format of " << optarg << endl;
				}
				break;
			case 'i':
				if (1!=sscanf(optarg,"%[^\0]",interval))
				{
					cout << "error ==> wrong format of " << optarg << endl;
				}
				break;
			case 'c':
				if (1!=sscanf(optarg,"%[^\0]",startPoint))
				{
					cout << "error ==> wrong format of " << optarg << endl;
				}
				break;
			case '?': //处理未定义或错误参数
				if (optopt == 'i' || optopt == 'l')
				{
					fprintf (stderr, "Option -%c requires an argument.\n", optopt);
					return -1;
				}
				else if (isprint(optopt))
				{
					fprintf (stderr, "Unknown option `-%c'.\n", optopt);
					return -1;
				}
				else
				{
					fprintf (stderr,"Unknown option character `\\x%x'.\n",optopt);
					return -1;
				}
				break;
			default:
				abort();
		}
	}

	sphInterpolate si;
	if (si.readGrid(infilename,interval,use_sc)) return -1;
	if (si.readRandom(infileloc,use_sc)) return -1;
	si.interpolate(startPoint);
	si.outRes();
	return 0;
}