Caldarale, Charles R wrote:
From: Len Popp [mailto:len.p...@gmail.com]
Subject: Re: [OT] Basic int/char conversion question
I note with satisfaction that I'm not the only one laboring away on this
day-after, but you're just all going a bit too fast for me and my
growing but still limited Java knowledge.
I like the idea of wrapping this in an InputStreamReader, but how is
this solving my problem ?
Suppose I do this :
String knownEncoding = "ISO-8859-1"; // or "ISO-8859-2"
InputStreamReader fromApp;
fromApp = = new InputStreamReader(socket.getInputStream(),
Charset.forName(knownEncoding));
int ic = 0;
StringBuffer buf = new StringBuffer(2000);
while((ic = fromApp.read()) != 26 && ic != -1) // hex 1A (SUB)
buf.append((char)ic);
.. then I'm still appending the same char (really, byte) to my buffer,
right ?
For example, suppose the byte in question is \xB5 on the fromApp stream.
Interpreted as iso-8859-1, this would be the character "micro", with
Unicode codepoint U00B5, which I would thus append to the StringBuffer
(which is, unless I am mistaken, composed of Unicode characters).
However, if the fromApp stream really was iso-8859-2, this same byte
\xB5 should be interpreted as the Unicode codepoint U013E (LATIN SMALL
LETTER L WITH CARON). ( ł )
But by doing
buf.append((char) ic)
I am still interpreting ic as being, by platform default, ISO-8859-1,
thus I am still appending the Unicode codepoint U00B5.
Not so ?
Or, can I / do I have to now also say :
char ic = 0;
while((ic = fromApp.read()) != 26 && ic != -1) // hex 1A (SUB)
buf.append(ic);
??
In other words, in order to keep my changes and post-festivities
headaches to a minimum, I would like to keep buf being a StringBuffer.
So what I was really looking for was the correct alternative to
buf.append((char) ic);
which would convert ic from an integer, to the appropriate Unicode
character, taking into account the "knownEncoding" which I know.
Does that not exist ?
A cursory examination of the webapp code seems to show that the byte in
question is only ever compared to either -1 or integers below 127, or
characters in the lower ASCII range "A-Za-z".
But is
if (char == some-integer)
always valid as a replacement for
if (int == some-integer)
?
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