38 lines
1.1 KiB
C++
38 lines
1.1 KiB
C++
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#include "hexdump.h"
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void hexdump_to_fd(int fd, const char *data, uint16_t len)
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{
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uint16_t i = 0;
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uint16_t used = 0;
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uint16_t offset = 0;
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#define LINE_LEN 80
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char line[LINE_LEN]; /* space needed 8+16*3+3+16 == 75 */
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dprintf(fd, "dump data at [%p], len=%u\n", data, len);
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while (offset < len)
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{
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/* format the line in the buffer, then use printf to usedput to screen */
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used = snprintf(line, LINE_LEN, "%08X:", offset);
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for (i = 0; ((offset + i) < len) && (i < 16); i++)
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{
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used += snprintf(line + used, LINE_LEN - used, " %02X", (data[offset + i] & 0xff));
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}
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for (; i <= 16; i++)
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{
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used += snprintf(line + used, LINE_LEN - used, " | ");
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}
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for (i = 0; (offset < len) && (i < 16); i++, offset++)
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{
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unsigned char c = data[offset];
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if ((c < ' ') || (c > '~'))
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{
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c = '.';
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}
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used += snprintf(line + used, LINE_LEN - used, "%c", c);
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}
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dprintf(fd, "%s\n", line);
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}
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dprintf(fd, "\n");
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}
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