<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html401/loose.dtd"> <html> <!-- Created on July, 8 2015 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: 11. Word breaks in strings <uniwbrk.h></title> <meta name="description" content="GNU libunistring: 11. Word breaks in strings <uniwbrk.h>"> <meta name="keywords" content="GNU libunistring: 11. Word breaks in strings <uniwbrk.h>"> <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_10.html#SEC41" title="Beginning of this chapter or previous chapter"> << </a>]</td> <td valign="middle" align="left">[<a href="libunistring_12.html#SEC47" 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_19.html#SEC77" 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="uniwbrk_002eh"></a> <a name="SEC44"></a> <h1 class="chapter"> <a href="libunistring.html#TOC44">11. Word breaks in strings <code><uniwbrk.h></code></a> </h1> <p>This include file declares functions for determining where in a string “words” start and end. Here “words” are not necessarily the same as entities that can be looked up in dictionaries, but rather groups of consecutive characters that should not be split by text processing operations. </p> <hr size="6"> <a name="Word-breaks-in-a-string"></a> <a name="SEC45"></a> <h2 class="section"> <a href="libunistring.html#TOC45">11.1 Word breaks in a string</a> </h2> <p>The following functions determine the word breaks in a string. </p> <dl> <dt><u>Function:</u> void <b>u8_wordbreaks</b><i> (const uint8_t *<var>s</var>, size_t <var>n</var>, char *<var>p</var>)</i> <a name="IDX736"></a> </dt> <dt><u>Function:</u> void <b>u16_wordbreaks</b><i> (const uint16_t *<var>s</var>, size_t <var>n</var>, char *<var>p</var>)</i> <a name="IDX737"></a> </dt> <dt><u>Function:</u> void <b>u32_wordbreaks</b><i> (const uint32_t *<var>s</var>, size_t <var>n</var>, char *<var>p</var>)</i> <a name="IDX738"></a> </dt> <dt><u>Function:</u> void <b>ulc_wordbreaks</b><i> (const char *<var>s</var>, size_t <var>n</var>, char *<var>p</var>)</i> <a name="IDX739"></a> </dt> <dd><p>Determines the word break points in <var>s</var>, an array of <var>n</var> units, and stores the result at <code><var>p</var>[0..<var>n</var>-1]</code>. </p><dl compact="compact"> <dt> <code><var>p</var>[i] = 1</code></dt> <dd><p>means that there is a word boundary between <code><var>s</var>[i-1]</code> and <code><var>s</var>[i]</code>. </p></dd> <dt> <code><var>p</var>[i] = 0</code></dt> <dd><p>means that <code><var>s</var>[i-1]</code> and <code><var>s</var>[i]</code> must not be separated. </p></dd> </dl> <p><code><var>p</var>[0]</code> is always set to 0. If an application wants to consider a word break to be present at the beginning of the string (before <code><var>s</var>[0]</code>) or at the end of the string (after <code><var>s</var>[0..<var>n</var>-1]</code>), it has to treat these cases explicitly. </p></dd></dl> <hr size="6"> <a name="Word-break-property"></a> <a name="SEC46"></a> <h2 class="section"> <a href="libunistring.html#TOC46">11.2 Word break property</a> </h2> <p>This is a more low-level API. The word break property is a property defined in Unicode Standard Annex #29, section “Word Boundaries”, see <a href="http://www.unicode.org/reports/tr29/#Word_Boundaries">http://www.unicode.org/reports/tr29/#Word_Boundaries</a>. It is used for determining the word breaks in a string. </p> <p>The following are the possible values of the word break property. More values may be added in the future. </p> <dl> <dt><u>Constant:</u> int <b>WBP_OTHER</b> <a name="IDX740"></a> </dt> <dt><u>Constant:</u> int <b>WBP_CR</b> <a name="IDX741"></a> </dt> <dt><u>Constant:</u> int <b>WBP_LF</b> <a name="IDX742"></a> </dt> <dt><u>Constant:</u> int <b>WBP_NEWLINE</b> <a name="IDX743"></a> </dt> <dt><u>Constant:</u> int <b>WBP_EXTEND</b> <a name="IDX744"></a> </dt> <dt><u>Constant:</u> int <b>WBP_FORMAT</b> <a name="IDX745"></a> </dt> <dt><u>Constant:</u> int <b>WBP_KATAKANA</b> <a name="IDX746"></a> </dt> <dt><u>Constant:</u> int <b>WBP_ALETTER</b> <a name="IDX747"></a> </dt> <dt><u>Constant:</u> int <b>WBP_MIDNUMLET</b> <a name="IDX748"></a> </dt> <dt><u>Constant:</u> int <b>WBP_MIDLETTER</b> <a name="IDX749"></a> </dt> <dt><u>Constant:</u> int <b>WBP_MIDNUM</b> <a name="IDX750"></a> </dt> <dt><u>Constant:</u> int <b>WBP_NUMERIC</b> <a name="IDX751"></a> </dt> <dt><u>Constant:</u> int <b>WBP_EXTENDNUMLET</b> <a name="IDX752"></a> </dt> </dl> <p>The following function looks up the word break property of a character. </p> <dl> <dt><u>Function:</u> int <b>uc_wordbreak_property</b><i> (ucs4_t <var>uc</var>)</i> <a name="IDX753"></a> </dt> <dd><p>Returns the Word_Break property of a Unicode character. </p></dd></dl> <hr size="6"> <table cellpadding="1" cellspacing="1" border="0"> <tr><td valign="middle" align="left">[<a href="#SEC44" title="Beginning of this chapter or previous chapter"> << </a>]</td> <td valign="middle" align="left">[<a href="libunistring_12.html#SEC47" 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_19.html#SEC77" 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>July, 8 2015</em> using <a href="http://www.nongnu.org/texi2html/"><em>texi2html 1.78a</em></a>. </font> <br> </p> </body> </html>