Bin2Hex(bin)
Last updated June 28, 2002
Version: 1 | Requires: ColdFusion 5 | Library: MathLib
Description:
Converts binary data (eg. obtained from cffile action=readbinary) to hexadecimal format (base16).
Return Values:
Returns a string. If an error occurs, returns
Example:
<cffile action="readbinary" file="#dafile#" variable="test">
<!--- Display portion of result... --->
<cfoutput>
#left(bin2hex(test),80)#
</cfoutput>
Parameters:
| Name | Description | Required |
|---|---|---|
| bin | Binary data. | Yes |
Full UDF Source:
<cfscript>
/**
* Converts binary data to hexadecimal format.
*
* @param bin Binary data. (Required)
* @return Returns a string. If an error occurs, returns
* @author Axel Glorieux (axel@misterbuzz.com)
* @version 1, June 28, 2002
*/
function Bin2Hex (bin){
var str64 = tobase64(bin);
var result = "";
var a = 0;
var b = 0;
var c = "";
var x = "";
var i = 1;
if (isbinary(bin)) {
for (i;i LTE len(str64);i=i+1){
c = asc(mid(str64,i,1));
if (c LT 47)x = 62;
else if (c LT 48)x = 63;
else if (c EQ 61)x = 0;
else if (c LT 65)x = c+4;
else if (c LT 97)x = c-65;
else x = c-71;
if (i mod 2){
a = bitshln(x,6);
}
else {
b = x;
for (j=len(formatbasen(a+b,16));j LT 3;j=j+1){
result = result & 0;
}
result = result & formatbasen(a+b,16);
a = 0;
b = 0;
}
}
if (right(str64,2) IS "=="){
result = left(result,len(result)-4);
}
else if (right(str64,1) IS "="){
result = left(result,len(result)-2);
}
return result;
}
else {
result = "Invalid binary data";
}
}
</cfscript>
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