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Full Discussion: Unicode programing in C
Top Forums Programming Unicode programing in C Post 302372303 by broli on Tuesday 17th of November 2009 03:25:14 PM
Old 11-17-2009
Unicode programing in C
im starting to go a little serious with c, woking in a personal project that will read a xml, which might contain Unicode characters (i know it will on my system, which is set to es_AR.UTF-8)

im using mxml, and the documentation says it uses utf8 internally (no worries here).
so i need to be sure im using utf8 in my program. to be sure that i can safely interact with mxml and to be sure my program will work in all languages.

i have been reading alot, but i dont quite fully get how i can accomplish this.

im going for something simple, something easy that wont demand much of me.

my program will read user input (from cli for now, gtk later), and will save it in xml (is a config file for other app). it will also have the option to read a xml, and use it as a base for a new one

now, i have a few concrete questions.
a) do i have to use a special type of variable?
if a) is true, then i need a hole new set of functions? (for strcmp, or strstr)
b) can i work with unicode characters using char *?
if b) is true, how do i "make" them utf8?
c) is a mix of the above? then how to choose the mix ratio?

i appreciate any help, manual, link, ect that can help me understand how this works. (that includes source code)

thanks
 

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LEARN ABOUT MOJAVE

unicode

unicode(n)						       Unicode normalization							unicode(n)

__________________________________________________________________________________________________________________________________________________

NAME

       unicode - Implementation of Unicode normalization

SYNOPSIS

       package require Tcl  8.3

       package require unicode	1.0

       ::unicode::fromstring string

       ::unicode::tostring uclist

       ::unicode::normalize form uclist

       ::unicode::normalizeS form string

_________________________________________________________________

DESCRIPTION

       This is an implementation in Tcl of the Unicode normalization forms.

COMMANDS

       ::unicode::fromstring string
	      Converts string to list of integer Unicode character codes which is used in unicode for internal string representation.

       ::unicode::tostring uclist
	      Converts list of integers uclist back to Tcl string.

       ::unicode::normalize form uclist
	      Normalizes  Unicode  characters  list  ulist according to form and returns the normalized list. Form form takes one of the following
	      values: D (canonical decomposition), C (canonical decomposition, followed by canonical composition),  KD	(compatibility	decomposi-
	      tion), or KC (compatibility decomposition, followed by canonical composition).

       ::unicode::normalizeS form string
	      A  shortcut  to ::unicode::tostring [unicode::normalize $form [::unicode::fromstring $string]].  Normalizes Tcl string and returns
	      normalized string.

EXAMPLES

       % ::unicode::fromstring "u0410u0411u0412u0413"
       1040 1041 1042 1043
       % ::unicode::tostring {49 50 51 52 53}
       12345
       %

       % ::unicode::normalize D {7692 775}
       68 803 775
       % ::unicode::normalizeS KD "u1d2c"
       A
       %

REFERENCES

       [1]    "Unicode Standard Annex #15: Unicode Normalization Forms", (http://unicode.org/reports/tr15/)

AUTHORS

       Sergei Golovan

BUGS, IDEAS, FEEDBACK
       This document, and the package it describes, will undoubtedly contain bugs and other problems.  Please report such in the category  string-
       prep  of  the  Tcllib  SF Trackers [http://sourceforge.net/tracker/?group_id=12883].  Please also report any ideas for enhancements you may
       have for either package and/or documentation.

SEE ALSO

       stringprep(n)

KEYWORDS

       normalization, unicode

COPYRIGHT

       Copyright (c) 2007, Sergei Golovan <sgolovan@nes.ru>

stringprep							       1.0.0								unicode(n)
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