Core Function BinaryLen

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<pre>
 
<pre>
−
BinaryLen( <binary-array> )
+
BinaryLen( <binary-array>, <newLen>, <fillWith> )
 
</pre>
 
</pre>
  
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Returns the number of bytes in a binary variable.
 
Returns the number of bytes in a binary variable.
 +
 +
Or increase it's capacity for bytes by using the second parameter.
  
 
=== Parameters ===
 
=== Parameters ===
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==== binary-array ====
 
==== binary-array ====
  
−
The binary variable to evaluate.  
+
The binary variable to check its size.  
 +
 
 +
==== newLen ====
 +
 
 +
Optional; If provided the Binary variable data array will be expanded to this new size.
 +
 
 +
Note - new lengths below the size of the current length are totally ignored and do nothing.
 +
 
 +
==== fillWith ====
 +
 
 +
Optional; The byte to fill in new bytes with if using the newLen
 +
 
 +
Default: 0x00
  
 
=== Return Value ===
 
=== Return Value ===
 +
 +
==== If using only one parameter ====
  
 
Success: Returns the length of the binary data in bytes.
 
Success: Returns the length of the binary data in bytes.
 +
 +
Failure: Returns -1.
 +
 +
==== If using the newLen parameter ====
 +
 +
Success: Returns true.
  
 
Failure: Returns -1.
 
Failure: Returns -1.
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=== Remarks ===
 
=== Remarks ===
  
−
UBound works just as good for this.
+
UBound works just as good for this if you only wish to see its current size.
  
 
=== Example ===
 
=== Example ===
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println( "Byte: " . $i . " | Hex: " . Hex($i) . " | Char: " . Chr($i) );
 
println( "Byte: " . $i . " | Hex: " . Hex($i) . " | Char: " . Chr($i) );
 
}
 
}
−
$String = Unpack("z0", $binary);
+
$String = Unpack("A*", $binary, 3);
 
println("Full string: " . $String);
 
println("Full string: " . $String);
 +
</syntaxhighlight>
 +
 +
Example of setting the length
 +
 +
<syntaxhighlight lang="sputnik">
 +
// Make a binary of "Hello"
 +
my $a = Pack("A*", "Hello");
 +
// Print it
 +
say BinaryExpand($a);
 +
// Expand its size
 +
BinaryLen($a, 11);
 +
// Write more data
 +
$a[5] = @' ';
 +
$a[6] = @'w';
 +
$a[7] = @'o';
 +
$a[8] = @'r';
 +
$a[9] = @'l';
 +
$a[10] = @'d';
 +
// Print it
 +
say BinaryExpand($a);
 +
// Prints:
 +
// 48 65 6C 6C 6F -- -- -- -- -- -- -- -- -- -- -- Hello
 +
// 48 65 6C 6C 6F 20 77 6F 72 6C 64 -- -- -- -- -- Hello world
 +
</syntaxhighlight>
 +
 +
Example of setting the length and fill with
 +
 +
<syntaxhighlight lang="sputnik">
 +
// Make a binary of "Hello"
 +
my $a = Pack("A*", "Hello");
 +
// Print it
 +
say BinaryExpand($a);
 +
// Expand its size
 +
BinaryLen($a, 100, 0x4A);
 +
// Print it
 +
say BinaryExpand($a);
 +
// Prints:
 +
// 48 65 6C 6C 6F -- -- -- -- -- -- -- -- -- -- -- Hello
 +
// 48 65 6C 6C 6F 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A HelloJJJJJJJJJJJ
 +
// 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A JJJJJJJJJJJJJJJJ
 +
// 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A JJJJJJJJJJJJJJJJ
 +
// 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A JJJJJJJJJJJJJJJJ
 +
// 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A JJJJJJJJJJJJJJJJ
 +
// 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A JJJJJJJJJJJJJJJJ
 +
// 4A 4A 4A 4A -- -- -- -- -- -- -- -- -- -- -- -- JJJJ
 
</syntaxhighlight>
 
</syntaxhighlight>
  
 
[[Category:Core Function]]
 
[[Category:Core Function]]

Latest revision as of 12:38, 14 June 2015

BinaryLen( <binary-array>, <newLen>, <fillWith> )

Contents

Description

Returns the number of bytes in a binary variable.

Or increase it's capacity for bytes by using the second parameter.

Parameters

binary-array

The binary variable to check its size.

newLen

Optional; If provided the Binary variable data array will be expanded to this new size.

Note - new lengths below the size of the current length are totally ignored and do nothing.

fillWith

Optional; The byte to fill in new bytes with if using the newLen

Default: 0x00

Return Value

If using only one parameter

Success: Returns the length of the binary data in bytes.

Failure: Returns -1.

If using the newLen parameter

Success: Returns true.

Failure: Returns -1.

Remarks

UBound works just as good for this if you only wish to see its current size.

Example 

$binary = BinaryHex("48656c6c6f20576f726c6421");
println( "Binary HEX: '" . BinaryStr($binary, ",") . "'" );
println("The binary size is: " . BinaryLen($binary) );
Foreach ($binary as $i)
{
	println( "Byte: " . $i . " | Hex: " . Hex($i) . " | Char: " . Chr($i) );
}
$String = Unpack("A*", $binary, 3);
println("Full string: " . $String);

Example of setting the length 

// Make a binary of "Hello"
my $a = Pack("A*", "Hello");
// Print it
say BinaryExpand($a);
// Expand its size
BinaryLen($a, 11);
// Write more data
$a[5] = @' ';
$a[6] = @'w';
$a[7] = @'o';
$a[8] = @'r';
$a[9] = @'l';
$a[10] = @'d';
// Print it
say BinaryExpand($a);
// Prints:
// 48 65 6C 6C 6F -- -- -- -- -- -- -- -- -- -- -- Hello
// 48 65 6C 6C 6F 20 77 6F 72 6C 64 -- -- -- -- -- Hello world

Example of setting the length and fill with 

// Make a binary of "Hello"
my $a = Pack("A*", "Hello");
// Print it
say BinaryExpand($a);
// Expand its size
BinaryLen($a, 100, 0x4A);
// Print it
say BinaryExpand($a);
// Prints:
// 48 65 6C 6C 6F -- -- -- -- -- -- -- -- -- -- -- Hello
// 48 65 6C 6C 6F 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A HelloJJJJJJJJJJJ
// 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A JJJJJJJJJJJJJJJJ
// 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A JJJJJJJJJJJJJJJJ
// 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A JJJJJJJJJJJJJJJJ
// 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A JJJJJJJJJJJJJJJJ
// 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A 4A JJJJJJJJJJJJJJJJ
// 4A 4A 4A 4A -- -- -- -- -- -- -- -- -- -- -- -- JJJJ
Retrieved from "http://ubersoft.org/Sputnik/wiki/index.php/Core_Function_BinaryLen"
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