text: // SPDX-License-Identifier: GPL-2.0
  #include "print_binary.h"
  #include <linux/log2.h>
  #include "sane_ctype.h"
  
  int binary__fprintf(unsigned char *data, size_t len,
  		    size_t bytes_per_line, binary__fprintf_t printer,
  		    void *extra, FILE *fp)
  {
  	size_t i, j, mask;
  	int printed = 0;
  
  	if (!printer)
  		return 0;
  
  	bytes_per_line = roundup_pow_of_two(bytes_per_line);
  	mask = bytes_per_line - 1;
  
  	printed += printer(BINARY_PRINT_DATA_BEGIN, 0, extra, fp);
  	for (i = 0; i < len; i++) {
  		if ((i & mask) == 0) {
  			printed += printer(BINARY_PRINT_LINE_BEGIN, -1, extra, fp);
  			printed += printer(BINARY_PRINT_ADDR, i, extra, fp);
  		}
  
  		printed += printer(BINARY_PRINT_NUM_DATA, data[i], extra, fp);
  
  		if (((i & mask) == mask) || i == len - 1) {
  			for (j = 0; j < mask-(i & mask); j++)
  				printed += printer(BINARY_PRINT_NUM_PAD, -1, extra, fp);
  
  			printer(BINARY_PRINT_SEP, i, extra, fp);
  			for (j = i & ~mask; j <= i; j++)
  				printed += printer(BINARY_PRINT_CHAR_DATA, data[j], extra, fp);
  			for (j = 0; j < mask-(i & mask); j++)
  				printed += printer(BINARY_PRINT_CHAR_PAD, i, extra, fp);
  			printed += printer(BINARY_PRINT_LINE_END, -1, extra, fp);
  		}
  	}
  	printed += printer(BINARY_PRINT_DATA_END, -1, extra, fp);
  	return printed;
  }
  
  int is_printable_array(char *p, unsigned int len)
  {
  	unsigned int i;
  
  	if (!p || !len || p[len - 1] != 0)
  		return 0;
  
  	len--;
  
  	for (i = 0; i < len; i++) {
  		if (!isprint(p[i]) && !isspace(p[i]))
  			return 0;
  	}
  	return 1;
  }
  