Adding upstream version 3.45.1.upstream/3.45.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
author: Daniel Baumann <daniel.baumann@progress-linux.org> 2024-04-13 14:07:11 +0000
committer: Daniel Baumann <daniel.baumann@progress-linux.org> 2024-04-13 14:07:11 +0000
commit: 63847496f14c813a5d80efd5b7de0f1294ffe1e3 (patch)
tree: 01c7571c7c762ceee70638549a99834fdd7c411b /www/c3ref/collation_needed.html
parent: Initial commit. (diff)
download: sqlite3-63847496f14c813a5d80efd5b7de0f1294ffe1e3.tar.xz
sqlite3-63847496f14c813a5d80efd5b7de0f1294ffe1e3.zip
1 files changed, 162 insertions, 0 deletions
diff --git a/www/c3ref/collation_needed.html b/www/c3ref/collation_needed.html
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+<!DOCTYPE html>
+<html><head>
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<meta http-equiv="content-type" content="text/html; charset=UTF-8">
+<link href="../sqlite.css" rel="stylesheet">
+<title>Collation Needed Callbacks</title>
+<!-- path=../ -->
+</head>
+<body>
+<div class=nosearch>
+<a href="../index.html">
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+<!-- keywords: sqlite3_collation_needed sqlite3_collation_needed16 -->
+<div class=nosearch>
+<a href="../c3ref/intro.html"><h2>SQLite C Interface</h2></a>
+<h2>Collation Needed Callbacks</h2>
+</div>
+<blockquote><pre>
+int sqlite3_collation_needed(
+  sqlite3*,
+  void*,
+  void(*)(void*,sqlite3*,int eTextRep,const char*)
+);
+int sqlite3_collation_needed16(
+  sqlite3*,
+  void*,
+  void(*)(void*,sqlite3*,int eTextRep,const void*)
+);
+</pre></blockquote>
+<p>
+To avoid having to register all collation sequences before a database
+can be used, a single callback function may be registered with the
+<a href="../c3ref/sqlite3.html">database connection</a> to be invoked whenever an undefined collation
+sequence is required.</p>
+
+<p>If the function is registered using the sqlite3_collation_needed() API,
+then it is passed the names of undefined collation sequences as strings
+encoded in UTF-8. If sqlite3_collation_needed16() is used,
+the names are passed as UTF-16 in machine native byte order.
+A call to either function replaces the existing collation-needed callback.</p>
+
+<p>When the callback is invoked, the first argument passed is a copy
+of the second argument to sqlite3_collation_needed() or
+sqlite3_collation_needed16().  The second argument is the database
+connection.  The third argument is one of <a href="../c3ref/c_any.html">SQLITE_UTF8</a>, <a href="../c3ref/c_any.html">SQLITE_UTF16BE</a>,
+or <a href="../c3ref/c_any.html">SQLITE_UTF16LE</a>, indicating the most desirable form of the collation
+sequence function required.  The fourth parameter is the name of the
+required collation sequence.</p>
+
+<p>The callback function should register the desired collation using
+<a href="../c3ref/create_collation.html">sqlite3_create_collation()</a>, <a href="../c3ref/create_collation.html">sqlite3_create_collation16()</a>, or
+<a href="../c3ref/create_collation.html">sqlite3_create_collation_v2()</a>.
+</p><p>See also lists of
+  <a href="../c3ref/objlist.html">Objects</a>,
+  <a href="../c3ref/constlist.html">Constants</a>, and
+  <a href="../c3ref/funclist.html">Functions</a>.</p>
+
author	Daniel Baumann <daniel.baumann@progress-linux.org>	2024-04-13 14:07:11 +0000
committer	Daniel Baumann <daniel.baumann@progress-linux.org>	2024-04-13 14:07:11 +0000
commit	63847496f14c813a5d80efd5b7de0f1294ffe1e3 (patch)
tree	01c7571c7c762ceee70638549a99834fdd7c411b /www/c3ref/collation_needed.html
parent	Initial commit. (diff)
download	sqlite3-63847496f14c813a5d80efd5b7de0f1294ffe1e3.tar.xz sqlite3-63847496f14c813a5d80efd5b7de0f1294ffe1e3.zip