FreeCalypso > hg > freecalypso-tools
annotate rvinterf/libprint/hexdump.c @ 940:ec5f51d33fdc
rvinterf code structure: factor out output_cont_logpref()
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Wed, 24 May 2023 06:43:15 +0000 |
parents | 65953c172f24 |
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1 /* |
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2 * The function contained in this module implements hex dump functionality: |
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3 * an arbitrary binary packet is dumped in hex, line by line, calling an output |
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4 * function for each line. |
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5 */ |
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6 |
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7 #include <sys/types.h> |
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8 #include <stdio.h> |
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9 #include <string.h> |
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10 #include <strings.h> |
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11 |
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12 void |
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13 packet_hex_dump(src, srclen, outfunc) |
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14 u_char *src; |
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15 unsigned srclen; |
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16 void (*outfunc)(); |
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17 { |
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18 u_char *sp = src; |
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19 unsigned remain = srclen; |
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20 unsigned offset = 0; |
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21 unsigned chunk; |
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22 char line[80], *dp; |
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23 int i, c; |
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24 |
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25 while (remain) { |
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26 sprintf(line, "%04X: ", offset); |
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27 dp = line + 7; |
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28 chunk = remain; |
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29 if (chunk > 16) |
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30 chunk = 16; |
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31 for (i = 0; i < 16; i++) { |
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32 if (i < chunk) |
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33 sprintf(dp, "%02X ", sp[i]); |
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34 else |
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35 strcpy(dp, " "); |
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36 dp += 3; |
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37 if (i == 7 || i == 15) |
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38 *dp++ = ' '; |
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39 } |
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40 for (i = 0; i < chunk; i++) { |
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41 c = sp[i]; |
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42 if (c < ' ' || c > '~') |
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43 c = '.'; |
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44 *dp++ = c; |
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45 } |
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46 *dp = '\0'; |
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47 outfunc(line); |
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48 sp += chunk; |
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49 remain -= chunk; |
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50 offset += chunk; |
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51 } |
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52 } |