CharacterToUnicodeMap class: Difference between revisions
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A <var>CharacterToUnicodeMap</var> object contains a mapping of single-byte code points to Unicode | A <var>CharacterToUnicodeMap</var> object contains a mapping of single-byte code points to Unicode characters. The single-byte characters are presumably EBCDIC or ASCII, though the class does not explicitly require this — it simply maps code points in some character set to Unicode. | ||
The <var>CharacterToUnicodeMap</var> class provides programmers with a facility for creating or copying | The <var>CharacterToUnicodeMap</var> class provides programmers with a facility for creating or copying | ||
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the <var class="product">Sirius Mods</var> codepages supported at your site. | the <var class="product">Sirius Mods</var> codepages supported at your site. | ||
You can use the <var>String</var> class <var>[[CharacterToUnicode (String function)|CharacterToUnicode]]</var> function | |||
which returns the mapped Unicode characters for its string method object. | |||
You can use the <var>String</var> class <var>[[CharacterToUnicode (String function)|CharacterToUnicode]]</var> | |||
The <var>CharacterToUnicodeMap</var> class is new as of version 8.0 of the <var class="product">Sirius Mods</var>. | The <var>CharacterToUnicodeMap</var> class is new as of version 8.0 of the <var class="product">Sirius Mods</var>. | ||
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the ASCII '01234' equivalent hex characters to Unicode. If you | the ASCII '01234' equivalent hex characters to Unicode. If you | ||
attempt to extract a translation of a code point not in the mapping, say an ASCII code point with the high order bit on like X'80', you get a <var>[[CharacterTranslationException class|CharacterTranslationException]]</var> exception: | attempt to extract a translation of a code point not in the mapping, say an ASCII code point with the high order bit on like X'80', you get a <var>[[CharacterTranslationException class|CharacterTranslationException]]</var> exception: | ||
<p class="code"> | <p class="code">begin | ||
for %i from 0 to 127 | %i is float | ||
%l is longstring | |||
%u is unicode | |||
%tr is object characterToUnicodeMap | |||
for %i from 0 to 127 | |||
%l = %l with %i:integerToBinary(1) | %l = %l with %i:integerToBinary(1) | ||
%u = %u:unicodeWith(%i:integerToBinary(2):utf16ToUnicode) | %u = %u:unicodeWith(%i:integerToBinary(2):utf16ToUnicode) | ||
end for | end for | ||
%tr = new(in=%l, out=%u) | %tr = new(in=%l, out=%u) | ||
printText {'3031323334':x:characterToUnicode(%tr)} | printText {'3031323334':x:characterToUnicode(%tr)} | ||
end </p> | end </p> | ||
The output of the above request is: | |||
<p class="output">01234</p> | |||
===Further examples=== | |||
See the [[NewFromEbcdicCodepage (CharacterToUnicodeMap function)#Examples|NewFromEbcdicCodepage examples]]. | |||
==List of CharacterToUnicodeMap methods== | |||
The [[List of CharacterToUnicodeMap methods]] shows all the class methods. | |||
[[Category:System classes]] | |||
Latest revision as of 19:05, 20 April 2018
A CharacterToUnicodeMap object contains a mapping of single-byte code points to Unicode characters. The single-byte characters are presumably EBCDIC or ASCII, though the class does not explicitly require this — it simply maps code points in some character set to Unicode.
The CharacterToUnicodeMap class provides programmers with a facility for creating or copying codepages that are not currently available in the current Sirius Mods version. Besides methods for creating and modifying your own codepage, the class also has methods for dynamically invoking one of the Sirius Mods codepages supported at your site.
You can use the String class CharacterToUnicode function which returns the mapped Unicode characters for its string method object.
The CharacterToUnicodeMap class is new as of version 8.0 of the Sirius Mods.
Example
The following request generates a basic ASCII to Unicode codepage, then converts the ASCII '01234' equivalent hex characters to Unicode. If you attempt to extract a translation of a code point not in the mapping, say an ASCII code point with the high order bit on like X'80', you get a CharacterTranslationException exception:
begin %i is float %l is longstring %u is unicode %tr is object characterToUnicodeMap for %i from 0 to 127 %l = %l with %i:integerToBinary(1) %u = %u:unicodeWith(%i:integerToBinary(2):utf16ToUnicode) end for %tr = new(in=%l, out=%u) printText {'3031323334':x:characterToUnicode(%tr)} end
The output of the above request is:
01234
Further examples
See the NewFromEbcdicCodepage examples.
List of CharacterToUnicodeMap methods
The List of CharacterToUnicodeMap methods shows all the class methods.