#include "func.h"

void disp_help()
{
	cout
	<<"grd2msh 1.0 - convert a Surfer6's grd file or a xyz file into Gmsh .msh file for 3D Mapping"<<endl<<endl
	<<"syntax: grd2msh <grd_file>|{<xyz_file> -i<x_interval>/<y_interval>}|{<xyz_file> -I<N>/<M>} [-rWGS84|EarthR|<ref-r>/<ref-R>] [-m<magnify_factor>] [-o<msh_file>]"<<endl
	<<"-i\tintervals in x and y directions for the xyz file"<<endl
	<<"-I\tmartax number in x and y directions for the xyz file"<<endl
	<<"-r\treference system of the input file, the data will be taken as altitudes with respect to the reference system"<<endl
	<<"-m\tmagnify factor of z values of the grid data"<<endl
	<<"-o\tGmsh's mesh file name. The input filename will be used if -o is absent"<<endl<<endl
	<<"example: grd2msh test.grd -m1.0 -otest.msh"<<endl;
}

int main(int argc, char const *argv[])
{
	char command_type[1024] = {0};
	char inputname[1024] = {0};
	char mshname[1024] = {0};
	char nametype[1024] = {0};
	char refSystem[1024] = "NULL";
	double mg_factor = 1.0;
	double dx = 0,dy = 0;
	int n_num = -1, m_num = -1;
	int Run = 1;
	int filetype;

	if (argc==1)
	{
		disp_help();
	}
	else
	{
		sscanf(argv[1],"%[^.]%s",inputname,nametype);//按格式读入文件名与扩展名
		if(!strcmp(inputname,""))//检查文件名是否为空
		{
			cout<<BOLDRED<<"==> "<<RESET<<"bad syntax: "<<argv[1]<<endl;
			Run = 0;
		}

		if (!strcmp(nametype,".grd"))
		{
			filetype = 1;
			sscanf(argv[1],"%s",inputname);
		}
		else if (!strcmp(nametype,".dat")||!strcmp(nametype,".xyz"))
		{
			filetype = 2;
			sscanf(argv[1],"%s",inputname);
		}
		else
		{
			cout<<BOLDRED<<"==> "<<RESET<<"unrecognized file type: "<<nametype<<endl;
			Run = 0;
		}

		for (int i = 2; i < argc; i++)
		{
			sscanf(argv[i],"%2s",command_type);
			if (!strcmp(command_type,MAGNIFY))
			{
				if (1!=sscanf(argv[i],"%*2s%lf",&mg_factor))
				{
					cout<<BOLDRED<<"==> "<<RESET<<"bad syntax: "<<argv[i]<<endl;
					Run = 0;
				}
			}
			else if(!strcmp(command_type,OUTMSH))//命令为文件名设置符
			{
				sscanf(argv[i],"%*2s%s",mshname);//按格式读入文件名与扩展名
				if(!strcmp(mshname,""))//检查文件名是否为空
				{
					cout<<BOLDRED<<"==> "<<RESET<<"bad syntax: "<<argv[i]<<endl;
					Run = 0;
				}
			}
			else if (!strcmp(command_type,INTERVAL))
			{
				if(2!=sscanf(argv[i],"%*2s%lf/%lf",&dx,&dy))
				{
					cout<<BOLDRED<<"==> "<<RESET<<"bad syntax: "<<argv[i]<<endl;
					Run = 0;
				}
			}
			else if (!strcmp(command_type,HL))
			{
				if(2!=sscanf(argv[i],"%*2s%d/%d",&n_num,&m_num))
				{
					cout<<BOLDRED<<"==> "<<RESET<<"bad syntax: "<<argv[i]<<endl;
					Run = 0;
				}
			}
			else if (!strcmp(command_type,REFER))
			{
				if(1!=sscanf(argv[i],"%*2s%s",refSystem))
				{
					cout<<BOLDRED<<"==> "<<RESET<<"bad syntax: "<<argv[i]<<endl;
					Run = 0;
				}
			}
			else //未定义的命令符
			{
				cout<<BOLDRED<<"==> "<<RESET<<"unrecognized syntax: "<<argv[i]<<endl;
				Run = 0;
			}
		}

		if (!strcmp(inputname,""))
		{
			cout<<BOLDRED<<"==> "<<RESET<<"error: bad syntax"<<endl;
			Run = 0;
		}
		else if (!strcmp(mshname,""))
		{
			char temp[1024] = {0};
			char temp2[1024] = {0};
			sscanf(inputname,"%[^.]%s",temp,temp2);
			strcpy(mshname,temp);
			strcat(mshname,".msh");
		}

		if ((filetype==2&&dx==0)||(filetype==2&&dy==0))
		{
			if ((filetype==2&&n_num==-1)||(filetype==2&&m_num==-1))
			{
				cout<<BOLDRED<<"==> "<<RESET<<"error: bad syntax"<<endl;
				Run = 0;
			}
		}

		if (Run)
		{
			func F1;
			F1.run(inputname,mshname,refSystem,mg_factor,filetype,dx,dy,n_num,m_num);
		}
	}
	return 0;
}