crsn/examples/font/convert.c

// Convert the xbm file  to crsn

#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include "font.xbm"

void main() {
	uint64_t digits[256];
	printf("(sym FONT r15)\n");
	printf("(mkbf FONT (\n");
	for (int ch = 0; ch < 256; ch++) {
		uint64_t symbol = 0;
		for(int row = 0; row<8;row++) {
			symbol <<= 8ull;
			unsigned char slice = psf_bits[row*32 + (ch/32)*(32*8) + (ch%32)];
            symbol |= slice;
			/* // show the symbol
			printf("    ; ");
			for(int j=0;j<8;j++) {
				if(slice&0x1) {
					printf("█");
				} else {
					printf(" ");
				}
				slice >>= 1;
			}
			printf("\n");
			//*/
        }
        digits[ch] = symbol;
        printf("    0x%016lx ; %d", symbol, ch);
        if (ch >= 32 && ch <= 126) {
            printf(" '%c'\n", ch);
        } else {
            printf("\n", ch);
        }
    }
    printf("))\n");
}