view src/u8tbl.c @ 8916:0234daffd946

<oerjan> addquote <int-e> I couldn\'t help thinking that maybe if one considers the ramifications in full detail it will turn out that overthinking is often not helpful and therefore, not something to be proud of.
author HackBot
date Sun, 14 Aug 2016 02:31:47 +0000
parents 8ddd6d5dc480
children
line wrap: on
line source

#include "stdio.h"
#include "stdlib.h"

char *int2u8(unsigned U){
	static char out[7];
	int i=0;
	if(U<=0x80)out[i++]=U;
	else if(U<0x800){
		out[i++]=(U>>6|0xC0);
		out[i++]=(U&0x3f|0x80);
	}else if(U<=0x10000){
		out[i++]=(U>>12|0xE0);
		out[i++]=(U>>6&0x3f|0x80);
		out[i++]=(U&0x3f|0x80);
	}else if(U<=0x200000){
		out[i++]=(U>>18|0xF0);
		out[i++]=(U>>12&0x3f|0x80);
		out[i++]=(U>>6&0x3f|0x80);
		out[i++]=(U&0x3f|0x80);
	}else if(U<=0x4000000){
		out[i++]=(U>>24|0xF8);
		out[i++]=(U>>18&0x3f|0x80);
		out[i++]=(U>>12&0x3f|0x80);
		out[i++]=(U>>6&0x3f|0x80);
		out[i++]=(U&0x3f|0x80);
	}else if(U<=0x80000000){
		out[i++]=(U>>30|0xFC);
		out[i++]=(U>>24&0x3f|0x80);
		out[i++]=(U>>18&0x3f|0x80);
		out[i++]=(U>>12&0x3f|0x80);
		out[i++]=(U>>6&0x3f|0x80);
		out[i++]=(U&0x3f|0x80);
	}
	out[i]=0;
	return out;
}

int main(int argc,char **argv){
	int i = strtol(argv[1],0,0);
	int m = strtol(argv[2],0,0);
	for(;i<=m;i++){
		printf("%s",int2u8(i));
		if(i%16==15)putchar('\n');
	}
}