BitOnString and BitOrString (String functions): Difference between revisions
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{{Template:String:BitOnString and BitOrString subtitle}} | {{Template:String:BitOnString and BitOrString subtitle}} | ||
These functions do a logical OR of the bits in two strings | |||
These functions do a logical OR of the binary bits in two strings: that is, if the bits are "on" in either of the inputs, they are "on" in the output. | |||
==Syntax== | ==Syntax== | ||
{{Template:String:BitOnString syntax}} | {{Template:String:BitOnString syntax}} | ||
{{Template:String:BitOrString syntax}} | {{Template:String:BitOrString syntax}} | ||
===Syntax terms=== | ===Syntax terms=== | ||
<table class="syntaxTable"> | <table class="syntaxTable"> | ||
<tr><th>%result</th><td>A string to receive the result of | <tr><th>%result</th><td>A string to receive the result of the logical OR operation on the bits of <var class="term">string</var> and <var class="term">onBits</var> (or <var class="term">string</var> and <var class="term">orBits</var>).</td></tr> | ||
<tr><th>string</th> | <tr><th>string</th> | ||
<td> | <td>A string.</td></tr> | ||
<td>A string | <tr><th>onBits</th> | ||
<tr><th> | <td>A string to be combined via bit-wise OR with the method object, <var class="term">string</var>.</td></tr> | ||
<td> | |||
<tr><th>orBits</th> | |||
<td>A string to be combined via bit-wise OR with the method object, <var class="term">string</var>.</td></tr> | |||
<tr><th><var>Pad</var></th> | <tr><th><var>Pad</var></th> | ||
<td> | <td>This [[Notation conventions for methods#Named parameters|name required]] parameter is the single-character value with which the shorter of the two input strings is to be extended. As many copies of <var class="term">c</var> are used as is required to make the shorter string as long as the longer. If both strings are of equal length, no padding is required. | ||
<p> | |||
The default value of <var class="term">c</var> is <code>'00':x</code>.</p></td></tr> | |||
</table> | </table> | ||
==Usage notes== | ==Usage notes== | ||
<ul> | <ul> | ||
<li>Using a null | <li>Using a null string for <var class="term">orBits</var> is an easy way of ORing each byte in a <var class="term">string</var> with a specific byte value (the <var>Pad</var> value). | ||
<li><var>BitOrString</var> is most useful for working with binary data, for example binary data being sent or received with <var class="product">[[Janus Sockets]]</var>. | <li><var>BitOrString</var> is most useful for working with binary data, for example binary data being sent or received with <var class="product">[[Janus Sockets]]</var>. | ||
</ul> | </ul> | ||
Revision as of 22:41, 1 November 2012
Bitwise Or of strings (String class)
[Introduced in Sirius Mods 7.9]
These functions do a logical OR of the binary bits in two strings: that is, if the bits are "on" in either of the inputs, they are "on" in the output.
Syntax
%result = string:BitOnString( onBits, [Pad= c])
%result = string:BitOrString( orBits, [Pad= c])
Syntax terms
| %result | A string to receive the result of the logical OR operation on the bits of string and onBits (or string and orBits). |
|---|---|
| string | A string. |
| onBits | A string to be combined via bit-wise OR with the method object, string. |
| orBits | A string to be combined via bit-wise OR with the method object, string. |
| Pad | This name required parameter is the single-character value with which the shorter of the two input strings is to be extended. As many copies of c are used as is required to make the shorter string as long as the longer. If both strings are of equal length, no padding is required.
The default value of c is |
Usage notes
- Using a null string for orBits is an easy way of ORing each byte in a string with a specific byte value (the Pad value).
- BitOrString is most useful for working with binary data, for example binary data being sent or received with Janus Sockets.
Examples
The following example converts lowercase alphabetic characters to uppercase (because EBCDIC A-Z characters are equal to a-z characters plus X'40'):
%upper = %lower:bitOrString('', pad='40':x)
In the above code, if %lower were 'foobar', %upper would be set to 'FOOBAR'.