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| author | Andreas Rottmann <a.rottmann@gmx.at> | 2009-09-14 12:32:44 +0200 |
|---|---|---|
| committer | Andreas Rottmann <a.rottmann@gmx.at> | 2009-09-14 12:32:44 +0200 |
| commit | fa095a4504cbe668e4244547e2c141597bea4ecf (patch) | |
| tree | 06135820a286ffec47804e75fbf8a147e92acd2e /doc/libunistring_2.html | |
Imported Upstream version 0.9.1upstream/0.9.1
Diffstat (limited to 'doc/libunistring_2.html')
| -rw-r--r-- | doc/libunistring_2.html | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/doc/libunistring_2.html b/doc/libunistring_2.html new file mode 100644 index 00000000..6d63b632 --- /dev/null +++ b/doc/libunistring_2.html @@ -0,0 +1,141 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html401/loose.dtd"> +<html> +<!-- Created on July, 1 2009 by texi2html 1.78a --> +<!-- +Written by: Lionel Cons <Lionel.Cons@cern.ch> (original author) + Karl Berry <karl@freefriends.org> + Olaf Bachmann <obachman@mathematik.uni-kl.de> + and many others. +Maintained by: Many creative people. +Send bugs and suggestions to <texi2html-bug@nongnu.org> + +--> +<head> +<title>GNU libunistring: 2. Conventions</title> + +<meta name="description" content="GNU libunistring: 2. Conventions"> +<meta name="keywords" content="GNU libunistring: 2. Conventions"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="texi2html 1.78a"> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +pre.display {font-family: serif} +pre.format {font-family: serif} +pre.menu-comment {font-family: serif} +pre.menu-preformatted {font-family: serif} +pre.smalldisplay {font-family: serif; font-size: smaller} +pre.smallexample {font-size: smaller} +pre.smallformat {font-family: serif; font-size: smaller} +pre.smalllisp {font-size: smaller} +span.roman {font-family:serif; font-weight:normal;} +span.sansserif {font-family:sans-serif; font-weight:normal;} +ul.toc {list-style: none} +--> +</style> + + +</head> + +<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_1.html#SEC1" title="Beginning of this chapter or previous chapter"> << </a>]</td> +<td valign="middle" align="left">[<a href="libunistring_3.html#SEC10" title="Next chapter"> >> </a>]</td> +<td valign="middle" align="left"> </td> +<td valign="middle" align="left"> </td> +<td valign="middle" align="left"> </td> +<td valign="middle" align="left"> </td> +<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_18.html#SEC71" 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="Conventions"></a> +<a name="SEC9"></a> +<h1 class="chapter"> <a href="libunistring.html#TOC9">2. Conventions</a> </h1> + +<p>This chapter explains conventions valid throughout the libunistring library. +</p> +<a name="IDX14"></a> +<p>Variables of type <code>char *</code> denote C strings in locale encoding. +See <a href="libunistring_1.html#SEC4">Locale encodings</a>. +</p> +<p>Variables of type <code>uint8_t *</code> denote UTF-8 strings. Their units +are bytes. +</p> +<p>Variables of type <code>uint16_t *</code> denote UTF-16 strings, without byte +order mark. Their units are 2-byte words. +</p> +<p>Variables of type <code>uint32_t *</code> denote UTF-32 strings, without byte +order mark. Their units are 4-byte words. +</p> +<p>Argument pairs <code>(<var>s</var>, <var>n</var>)</code> denote a string +<code><var>s</var>[0..<var>n</var>-1]</code> with exactly <var>n</var> units. +</p> +<p>All functions with prefix ‘<samp>ulc_</samp>’ operate on C strings in locale +encoding. +</p> +<p>All functions with prefix ‘<samp>u8_</samp>’ operate on UTF-8 strings. +</p> +<p>All functions with prefix ‘<samp>u16_</samp>’ operate on UTF-16 strings. +</p> +<p>All functions with prefix ‘<samp>u32_</samp>’ operate on UTF-32 strings. +</p> +<p>For every function with prefix ‘<samp>u8_</samp>’, operating on UTF-8 strings, +there is also a corresponding function with prefix ‘<samp>u16_</samp>’, +operating on UTF-16 strings, and a corresponding function with prefix +‘<samp>u32_</samp>’, operating on UTF-32 strings. Their description is +analogous; in this documentation we describe only the function that +operates on UTF-8 strings, for brevity. +</p> +<p>A declaration with a variable <var>n</var> denotes the three concrete +declarations with <var>n</var> = 8, <var>n</var> = 16, <var>n</var> = 32. +</p> +<p>All parameters starting with ‘<samp>str</samp>’ and the parameters of +functions starting with <code>u8_str</code>/<code>u16_str</code>/<code>u32_str</code> +denote a NUL terminated string. +</p> +<a name="IDX15"></a> +<p>Error values are always returned through the <code>errno</code> variable, +usually with a return value that indicates the presence of an error +(NULL for functions that return an pointer, or -1 for functions that +return an <code>int</code>). +</p> +<p>Functions returning a string result take a +<code>(<var>resultbuf</var>, <var>lengthp</var>)</code> +argument pair. If <var>resultbuf</var> is not NULL and the result fits +into <code>*<var>lengthp</var></code> units, it is put in <var>resultbuf</var>, and +<var>resultbuf</var> is returned. Otherwise, a freshly allocated string +is returned. In both cases, <code>*<var>lengthp</var></code> is set to the +length (number of units) of the returned string. In case of error, +NULL is returned and <code>errno</code> is set. +</p> +<hr size="6"> +<table cellpadding="1" cellspacing="1" border="0"> +<tr><td valign="middle" align="left">[<a href="libunistring_1.html#SEC1" title="Beginning of this chapter or previous chapter"> << </a>]</td> +<td valign="middle" align="left">[<a href="libunistring_3.html#SEC10" title="Next chapter"> >> </a>]</td> +<td valign="middle" align="left"> </td> +<td valign="middle" align="left"> </td> +<td valign="middle" align="left"> </td> +<td valign="middle" align="left"> </td> +<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_18.html#SEC71" 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>Bruno Haible</em> on <em>July, 1 2009</em> using <a href="http://www.nongnu.org/texi2html/"><em>texi2html 1.78a</em></a>. + </font> + <br> + +</p> +</body> +</html> |