/*********************************************************************************
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* Copyright: (C) 2012 Guo Wenxue <guowenxue@gmail.com>
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* All rights reserved.
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*
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* Filename: dump.c
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* Description: This is the buffer dump print code.
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*
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* Version: 1.0.0(08/08/2012~)
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* Author: Guo Wenxue <guowenxue@gmail.com>
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* ChangeLog: 1, Release initial version on "08/08/2012 06:51:40 PM"
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*
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********************************************************************************/
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#include <stdio.h>
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void dump_buf(const char *prompt, const unsigned char *buf, size_t len)
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{
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char line[256];
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size_t i, j;
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int offset;
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if( prompt )
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{
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printf("%s", prompt);
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}
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for(i = 0; i < len; i += 16)
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{
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offset = snprintf(line, sizeof(line), "%08zx: ", i);
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/* Print hex representation */
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for (j = 0; j < 16; j++)
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{
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if (i + j < len)
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offset += snprintf(line + offset, sizeof(line) - offset, "%02x ", buf[i + j]);
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else
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offset += snprintf(line + offset, sizeof(line) - offset, " ");
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}
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offset += snprintf(line + offset, sizeof(line) - offset, " ");
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/* Print ASCII representation */
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for (j = 0; j < 16; j++)
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{
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if (i + j < len)
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{
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unsigned char c = buf[i + j];
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offset += snprintf(line + offset, sizeof(line) - offset, "%c", (c >= 32 && c <= 126) ? c : '.');
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}
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else
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{
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offset += snprintf(line + offset, sizeof(line) - offset, " ");
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}
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}
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/* Print the line */
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printf("%s\n", line);
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}
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}
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int main (int argc, char **argv)
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{
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char buf[256];
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int i;
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for(i=0; i<sizeof(buf); i++)
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buf[i] = i;
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dump_buf("Hex dump buffer content:\n", buf, sizeof(buf));
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return 0;
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}
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