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diff --git a/doc/libunistring_18.html b/doc/libunistring_18.html index 92da25d..baf80b9 100644 --- a/doc/libunistring_18.html +++ b/doc/libunistring_18.html @@ -1,6 +1,6 @@ <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html401/loose.dtd"> <html> -<!-- Created on November, 30 2017 by texi2html 1.78a --> +<!-- Created on February, 28 2018 by texi2html 1.78a --> <!-- Written by: Lionel Cons <Lionel.Cons@cern.ch> (original author) Karl Berry <karl@freefriends.org> @@ -11,10 +11,10 @@ Send bugs and suggestions to <texi2html-bug@nongnu.org> --> <head> -<title>GNU libunistring: A. Licenses</title> +<title>GNU libunistring: A. The wchar_t mess</title> -<meta name="description" content="GNU libunistring: A. Licenses"> -<meta name="keywords" content="GNU libunistring: A. Licenses"> +<meta name="description" content="GNU libunistring: A. The wchar_t mess"> +<meta name="keywords" content="GNU libunistring: A. The wchar_t mess"> <meta name="resource-type" content="document"> <meta name="distribution" content="global"> <meta name="Generator" content="texi2html 1.78a"> @@ -42,8 +42,8 @@ ul.toc {list-style: none} <body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> <table cellpadding="1" cellspacing="1" border="0"> -<tr><td valign="middle" align="left">[<a href="libunistring_17.html#SEC67" title="Beginning of this chapter or previous chapter"> << </a>]</td> -<td valign="middle" align="left">[<a href="libunistring_19.html#SEC77" title="Next chapter"> >> </a>]</td> +<tr><td valign="middle" align="left">[<a href="libunistring_17.html#SEC80" title="Beginning of this chapter or previous chapter"> << </a>]</td> +<td valign="middle" align="left">[<a href="libunistring_19.html#SEC82" title="Next chapter"> >> </a>]</td> <td valign="middle" align="left"> </td> <td valign="middle" align="left"> </td> <td valign="middle" align="left"> </td> @@ -51,1478 +51,67 @@ ul.toc {list-style: none} <td valign="middle" align="left"> </td> <td valign="middle" align="left">[<a href="libunistring.html#SEC_Top" title="Cover (top) of document">Top</a>]</td> <td valign="middle" align="left">[<a href="libunistring.html#SEC_Contents" title="Table of contents">Contents</a>]</td> -<td valign="middle" align="left">[<a href="libunistring_19.html#SEC77" title="Index">Index</a>]</td> +<td valign="middle" align="left">[<a href="libunistring_20.html#SEC91" title="Index">Index</a>]</td> <td valign="middle" align="left">[<a href="libunistring_abt.html#SEC_About" title="About (help)"> ? </a>]</td> </tr></table> <hr size="2"> -<a name="Licenses"></a> -<a name="SEC68"></a> -<h1 class="appendix"> <a href="libunistring.html#TOC68">A. Licenses</a> </h1> +<a name="The-wchar_005ft-mess"></a> +<a name="SEC81"></a> +<h1 class="appendix"> <a href="libunistring.html#TOC81">A. The <code>wchar_t</code> mess</a> </h1> -<p>The files of this package are covered by the licenses indicated in each -particular file or directory. Here is a summary: -</p> -<ul> -<li> -The <code>libunistring</code> library and its header files are dual-licensed under -"the GNU LGPLv3+ or the GNU GPLv2". This means, you can use it under either -<ul class="toc"> -<li> - -the terms of the GNU Lesser General Public License (LGPL) version 3 or -(at your option) any later version, or -</li><li> - -the terms of the GNU General Public License (GPL) version 2, or -</li><li> - -the same dual license "the GNU LGPLv3+ or the GNU GPLv2". -</li></ul> -<p>You find the GNU LGPL version 3 in <a href="#SEC74">GNU LESSER GENERAL PUBLIC LICENSE</a>. This license is -based on the GNU GPL version 3, see <a href="#SEC69">GNU GENERAL PUBLIC LICENSE</a>. -<br> -You can find the GNU GPL version 2 at -<a href="https://www.gnu.org/licenses/old-licenses/gpl-2.0.html">https://www.gnu.org/licenses/old-licenses/gpl-2.0.html</a>. -<br> -Note: This dual license makes it possible for the <code>libunistring</code> library -to be used by packages under GPLv2 or GPLv2+ licenses, in particular. See -the table in <a href="https://www.gnu.org/licenses/gpl-faq.html#AllCompatibility">https://www.gnu.org/licenses/gpl-faq.html#AllCompatibility</a>. -</p> - -</li><li> -This manual is free documentation. It is dually licensed under the -GNU FDL and the GNU GPL. This means that you can redistribute this -manual under either of these two licenses, at your choice. -<br> -This manual is covered by the GNU FDL. Permission is granted to copy, -distribute and/or modify this document under the terms of the -GNU Free Documentation License (FDL), either version 1.2 of the -License, or (at your option) any later version published by the -Free Software Foundation (FSF); with no Invariant Sections, with no -Front-Cover Text, and with no Back-Cover Texts. -A copy of the license is included in <a href="#SEC75">GNU Free Documentation License</a>. -<br> -This manual is covered by the GNU GPL. 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Any attempt -otherwise to copy, modify, sublicense, or distribute it is void, and -will automatically terminate your rights under this License. -</p> -<p>However, if you cease all violation of this License, then your license -from a particular copyright holder is reinstated (a) provisionally, -unless and until the copyright holder explicitly and finally -terminates your license, and (b) permanently, if the copyright holder -fails to notify you of the violation by some reasonable means prior to -60 days after the cessation. -</p> -<p>Moreover, your license from a particular copyright holder is -reinstated permanently if the copyright holder notifies you of the -violation by some reasonable means, this is the first time you have -received notice of violation of this License (for any work) from that -copyright holder, and you cure the violation prior to 30 days after -your receipt of the notice. -</p> -<p>Termination of your rights under this section does not terminate the -licenses of parties who have received copies or rights from you under -this License. If your rights have been terminated and not permanently -reinstated, receipt of a copy of some or all of the same material does -not give you any rights to use it. -</p> -</li><li> -FUTURE REVISIONS OF THIS LICENSE - -<p>The Free Software Foundation may publish new, revised versions -of the GNU Free Documentation License from time to time. Such new -versions will be similar in spirit to the present version, but may -differ in detail to address new problems or concerns. See -<a href="http://www.gnu.org/copyleft/">http://www.gnu.org/copyleft/</a>. -</p> -<p>Each version of the License is given a distinguishing version number. -If the Document specifies that a particular numbered version of this -License “or any later version” applies to it, you have the option of -following the terms and conditions either of that specified version or -of any later version that has been published (not as a draft) by the -Free Software Foundation. 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A -“Massive Multiauthor Collaboration” (or “MMC”) contained in the -site means any set of copyrightable works thus published on the MMC -site. -</p> -<p>“CC-BY-SA” means the Creative Commons Attribution-Share Alike 3.0 -license published by Creative Commons Corporation, a not-for-profit -corporation with a principal place of business in San Francisco, -California, as well as future copyleft versions of that license -published by that same organization. -</p> -<p>“Incorporate” means to publish or republish a Document, in whole or -in part, as part of another Document. -</p> -<p>An MMC is “eligible for relicensing” if it is licensed under this -License, and if all works that were first published under this License -somewhere other than this MMC, and subsequently incorporated in whole -or in part into the MMC, (1) had no cover texts or invariant sections, -and (2) were thus incorporated prior to November 1, 2008. -</p> -<p>The operator of an MMC Site may republish an MMC contained in the site -under CC-BY-SA on the same site at any time before August 1, 2009, -provided the MMC is eligible for relicensing. -</p> -</li></ol> - - -<a name="SEC76"></a> -<h2 class="heading"> ADDENDUM: How to use this License for your documents </h2> - -<p>To use this License in a document you have written, include a copy of -the License in the document and put the following copyright and -license notices just after the title page: -</p> -<table><tr><td> </td><td><pre class="smallexample"> Copyright (C) <var>year</var> <var>your name</var>. - Permission is granted to copy, distribute and/or modify this document - under the terms of the GNU Free Documentation License, Version 1.3 - or any later version published by the Free Software Foundation; - with no Invariant Sections, no Front-Cover Texts, and no Back-Cover - Texts. A copy of the license is included in the section entitled ``GNU - Free Documentation License''. -</pre></td></tr></table> - -<p>If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts, -replace the “with…Texts.” line with this: -</p> -<table><tr><td> </td><td><pre class="smallexample"> with the Invariant Sections being <var>list their titles</var>, with - the Front-Cover Texts being <var>list</var>, and with the Back-Cover Texts - being <var>list</var>. -</pre></td></tr></table> +On AIX and Windows platforms, <code>wchar_t</code> is a 16-bit type. This +means that it can never accommodate an entire Unicode character. Either +the <code>wchar_t *</code> strings are limited to characters in UCS-2 (the +“Basic Multilingual Plane” of Unicode), or — if <code>wchar_t *</code> +strings are encoded in UTF-16 — a <code>wchar_t</code> represents only half +of a character in the worst case, making the <a href="http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/wctype.h.html"><code><wctype.h></code></a> functions +pointless. + +</li><li> +On Solaris and FreeBSD, the <code>wchar_t</code> encoding is locale dependent +and undocumented. This means, if you want to know any property of a +<code>wchar_t</code> character, other than the properties defined by +<a href="http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/wctype.h.html"><code><wctype.h></code></a> — such as whether it's a dash, currency symbol, +paragraph separator, or similar —, you have to convert it to +<code>char *</code> encoding first, by use of the function <a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/wctomb.html"><code>wctomb</code></a>. + +</li><li> +When you read a stream of wide characters, through the functions +<a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/fgetwc.html"><code>fgetwc</code></a> and <a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/fgetws.html"><code>fgetws</code></a>, and when the input stream/file is +not in the expected encoding, you have no way to determine the invalid +byte sequence and do some corrective action. If you use these +functions, your program becomes “garbage in - more garbage out” or +“garbage in - abort”. +</li></ul> -<p>If you have Invariant Sections without Cover Texts, or some other -combination of the three, merge those two alternatives to suit the -situation. -</p> -<p>If your document contains nontrivial examples of program code, we -recommend releasing these examples in parallel under your choice of -free software license, such as the GNU General Public License, -to permit their use in free software. +<p>As a consequence, it is better to use multibyte strings, as explained in +the section <a href="libunistring_1.html#SEC6">‘<samp>char *</samp>’ strings</a>. Such multibyte strings can bypass +limitations of the <code>wchar_t</code> type, if you use functions defined in gnulib +and libunistring for text processing. They can also faithfully transport +malformed characters that were present in the input, without requiring +the program to produce garbage or abort. </p> - - <hr size="6"> <table cellpadding="1" cellspacing="1" border="0"> -<tr><td valign="middle" align="left">[<a href="#SEC68" title="Beginning of this chapter or previous chapter"> << </a>]</td> -<td valign="middle" align="left">[<a href="libunistring_19.html#SEC77" title="Next chapter"> >> </a>]</td> +<tr><td valign="middle" align="left">[<a href="libunistring_17.html#SEC80" title="Beginning of this chapter or previous chapter"> << </a>]</td> +<td valign="middle" align="left">[<a href="libunistring_19.html#SEC82" title="Next chapter"> >> </a>]</td> <td valign="middle" align="left"> </td> <td valign="middle" align="left"> </td> <td valign="middle" align="left"> </td> @@ -1530,12 +119,12 @@ to permit their use in free software. <td valign="middle" align="left"> </td> <td valign="middle" align="left">[<a href="libunistring.html#SEC_Top" title="Cover (top) of document">Top</a>]</td> <td valign="middle" align="left">[<a href="libunistring.html#SEC_Contents" title="Table of contents">Contents</a>]</td> -<td valign="middle" align="left">[<a href="libunistring_19.html#SEC77" title="Index">Index</a>]</td> +<td valign="middle" align="left">[<a href="libunistring_20.html#SEC91" title="Index">Index</a>]</td> <td valign="middle" align="left">[<a href="libunistring_abt.html#SEC_About" title="About (help)"> ? </a>]</td> </tr></table> <p> <font size="-1"> - This document was generated by <em>Daiki Ueno</em> on <em>November, 30 2017</em> using <a href="http://www.nongnu.org/texi2html/"><em>texi2html 1.78a</em></a>. + This document was generated by <em>Daiki Ueno</em> on <em>February, 28 2018</em> using <a href="http://www.nongnu.org/texi2html/"><em>texi2html 1.78a</em></a>. </font> <br> |