convert.c

51avr http协议 代码

#include "convert.h"

bit IPadrToHEX(unsigned char *Str,unsigned long *ip)
{
	unsigned char i,j,ch,x;

	ch=*Str++;

	for(j=0;j<3;j++){
		x=0;
		for(i=0;i<4;i++){
			if(ch=='.') {ch=*Str++;break;}
			else if(i==3) return 0;
			else if(ch<0&&ch>9) return 0;
			else
				x=10*x+(ch-'0');
			ch=*Str++;
		}
		((unsigned char *)ip)[j]=x;
	}

	x=0;
	for(i=0;i<4;i++){
		if(ch=='\0') {ch=*Str++;break;}
		else if(i==3) return 0;
		else if(ch<0&&ch>9) return 0;
		else
			x=10*x+(ch-'0');
		ch=*Str++;
	}
	((unsigned char *)ip)[3]=x;
	return 1;
}

void HEXToIPadr(unsigned char *Str,unsigned long *ip)
{
	unsigned char i;
	unsigned char x,y;

	for(i=0;i<4;i++){
		x=((unsigned char *)ip)[i];
		if(x>99){
			y=x/100;*Str++=y+'0';
			x=x-100*y;y=x/10;*Str++=y+'0';
			x=x-10*y;*Str++=x+'0';
			if(i==3) *Str++='\0';
			else *Str++='.';
		}
		else if(x>9){
			y=x/10;*Str++=y+'0';
			x=x-10*y;*Str++=x+'0';
			if(i==3) *Str++='\0';
			else *Str++='.';
		}
		else{
			*Str++=x+'0';
			if(i==3) *Str++='\0';
			else *Str++='.';
		}
	}	
}