#include "trackLine.h"

void disp_help()
{
	cout << "trackline - v1.1 extract data along a line from a group of 2-D data points" << endl
		<< "Author: zhangyi.cugwuhan@gmail.com" << endl << endl
		<< "usage: trackline -i<input-file>[+d<x-col>,<y-col>,<z-col>] -o<output-file> \n\t -l<input-file>[+d<x-col>,<y-col>]|<p1-x>/<p1-y>/<p2-x>/<p2-y>/<spacing> \n\t [-b<grid-x>/<grid-y>] [-h]" << endl
		<< "\t-i\tinput data 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
		<< "\t-o\toutput data table, every line contains a x-coordinate of a point on the line and 2-D coordinates of the point, and the point's value" << endl
		<< "\t-l\tline parameters, you can either specify where the line starts and ends, plus interval of data points on the line. Or you can give point locations via a file, 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
		<< "\t-b\tgriding parameters, the program will automatically using the mean area-size of input points to estimate a griding size if no -b option has been set" << endl
		<< "\t-h\tshow this info" << endl;
}

int main(int argc, char** argv)
{
	trackLine tl;
	char infilename[1024] = "NULL";
	char outfilename[1024] = "NULL";
	char boxpara[1024] = "NULL";
	char linepara[1024] = "NULL";

	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,"hi:o:l:b:")) != -1)
	{
		/*匹配命令*/
		switch (curr)
		{
			case 'h': //显示帮助信息
				disp_help();
				break;
			case 'i':
				if (1!=sscanf(optarg,"%s",infilename))
				{
					cout << "error ==> wrong format of " << optarg << endl;
				}
				break;
			case 'o':
				if (1!=sscanf(optarg,"%s",outfilename))
				{
					cout << "error ==> wrong format of " << optarg << endl;
				}
				break;
			case 'l':
				if (1!=sscanf(optarg,"%s",linepara))
				{
					cout << "error ==> wrong format of " << optarg << endl;
				}
				break;
			case 'b':
				if (1!=sscanf(optarg,"%s",boxpara))
				{
					cout << "error ==> wrong format of " << optarg << endl;
				}
				break;
			case '?': //处理未定义或错误参数
				if (optopt == 'i' || optopt == 'o' || optopt == 'l' || optopt == 'b')
				{
					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();
		}
	}

	if (tl.getInputNode(infilename)) return 0;
	tl.initBox(boxpara);
	if (tl.initLine(linepara)) return 0;
	tl.interLine();
	tl.outLine(outfilename);
	return 0;
}