wrdstr.c

unix环境下c语言屏幕编程开发

/*******************************************
 *					   
 *	在x列y行处读一长length的字符串	   
 *					   
 *	遇回车结束,长度放在length中.	  
 *					 
 *******************************************/

#include "../inc/screen.h"
wrdstr(x,y,string,length)
int 	x,y,length;
char	*string;
{
	int 	i;
	char	str[81];
	unsigned char	ch;

	if(x < 0 || x > 79-length || y < 0 || y > 24 || length < 1 || length>80)
		return(ERR);

	i = 0;
	for(i = 0; i < length; i++)
	{
		str[i] = BLANK;
	}
	str[length] = NUL;

	i = 0;
	scp(x,y);
	do{
		ch = wgetch();
		switch(ch)
		{
			case BS:
				if(i > 0)
				{
					i--;
					str[i] = BLANK;
					scp(x + i,y);
					putchar(BLANK);
					scp(x + i,y);
				}
				else
					beep(1);
				break;
			case 128: case 129: case 130: case 131:
				beep(1);break;
			case TAB:
				return(ABORT);
			case ESC:
				return(BKABORT);
			default:
				if(ch == LF)
					;
				else  if(ch < BLANK && ch >= NUL)
					beep(1);
				else  if ( i < length )
				{
					str[i] = ( char ) ch;
					scp(x + i,y);
                                        putchar ( '*' ) ;
					i++;
				}
				else
					beep(1);
		}
	}while(ch != CR && ch != LF);
	if(i)
		wstrcpy(str,string,length);
	else
		i=QUIT;
	return(i);
}

/*******************************************
 *					            *
 *	在x列y行处读一字符串	   *
 *					            *
 *	遇回车结束.	            *
 *					            *
 *******************************************/
wrdstr_cff(x,y,string)
int 	x,y;
char	*string;
{
	int 	i;
	char	str[81];
	unsigned char	ch;

	if(x < 0 || x > 80 || y < 0 || y > 24 )
		return(ERR);

	i = 0;

   memset( str, 0x00, sizeof( str ));

	i = 0;
	scp(x,y);
	do{
		ch = wgetch();
		switch(ch)
		{
			case BS:
				if(i > 0)
				{
					i--;
					str[i] = BLANK;
					scp(x + i,y);
					putchar(BLANK);
					scp(x + i,y);
				}
				else
					beep(1);
				break;
			case 128: case 129: case 130: case 131:
				beep(1);break;
			case TAB:
				return(ABORT);
			case ESC:
				return(BKABORT);
			default:
				if(ch == LF)
					;
				else  if(ch < BLANK && ch >= NUL)
					beep(1);
				else  if ( i < 80 )
				{
					str[i] = ( char ) ch;
					scp(x + i,y);
               putchar ( ch ) ;
					i++;
				}
				else
					beep(1);
		}
	}while(ch != CR && ch != LF);
	if(i)
		strcpy(string,str );
	else
		i=QUIT;
	return(i);
}