// SPDX-License-Identifier: GPL-2.0
#include "print_binary.h"
#include <linux/log2.h>
#include <linux/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 && p[i]; i++) {
                if (!isprint(p[i]) && !isspace(p[i]))
                        return 0;
        }
        return 1;
}