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Added a CreateHexDump() function for easier raw data debugging

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git-svn-id: http://mc-server.googlecode.com/svn/trunk@818 0a769ca7-a7f5-676a-18bf-c427514a06d6
This commit is contained in:
madmaxoft@gmail.com 2012-09-02 09:04:11 +00:00
parent b229560132
commit 926903905b
2 changed files with 59 additions and 1 deletions
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58
source/StringUtils.cpp
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@ -464,4 +464,60 @@ AString & UTF8ToRawBEUTF16(const char * a_UTF8, size_t a_UTF8Length, AString & a
} while (tmpBytesToRead > 0);
}
--------------------------------------------------------------------- */
--------------------------------------------------------------------- */
/*
format binary data this way:
00001234: 31 32 33 34 35 36 37 38 39 30 61 62 63 64 65 66 1234567890abcdef
*/
#define HEX(x) ((x) > 9 ? (x) + 'A' - 10 : (x) + '0')
AString & CreateHexDump(AString & a_Out, const void * a_Data, int a_Size, int a_LineLength)
{
ASSERT(a_LineLength <= 120); // Due to using a fixed size line buffer; increase line[]'s size to lift this max
char line[512];
char * p;
char * q;
a_Out.reserve(a_Size / a_LineLength * (18 + 6 * a_LineLength));
for (int i = 0; i < a_Size; i += a_LineLength)
{
int k = a_Size - i;
if (k > a_LineLength)
{
k = a_LineLength;
}
memset(line, ' ', sizeof(line));
line[sprintf(line, "%08x:", i)] = 32; // Remove the terminating NULL that sprintf puts there
p = line + 10;
q = p + 2 + a_LineLength * 3 + 1;
for (int j = 0; j < k; j++)
{
unsigned char c = ((unsigned char *)a_Data)[i + j];
p[0] = HEX(c >> 4);
p[1] = HEX(c & 0xf);
if (c >= ' ')
{
q[0] = (char)c;
}
else
{
q[0] = '.';
}
p += 3;
q ++;
} // for j
q[0] = '\n';
q[1] = 0;
a_Out.append(line);
} // for i
return a_Out;
}

2
source/StringUtils.h
View File

@ -57,6 +57,8 @@ extern AString & RawBEToUTF8(short * a_RawData, int a_NumShorts, AString & a_UTF
/// Converts a UTF-8 string into a UTF-16 BE string, packing that back into AString; return a ref to a_UTF16
extern AString & UTF8ToRawBEUTF16(const char * a_UTF8, size_t a_UTF8Length, AString & a_UTF16);
/// Creates a nicely formatted HEX dump of the given memory block. Max a_BytesPerLine is 120
extern AString & CreateHexDump(AString & a_Out, const void * a_Data, int a_Size, int a_BytesPerLine);
// If you have any other string helper functions, declare them here