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v2.14.2
doc/devhelp/libxml2-xmlstring.html
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Nick Wellnhofer
Update documentation for 2.14.0
27 мар 2025, 17:17
27 мар 2025, 17:17
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<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>xmlstring: set of routines to process strings</title> <meta name="generator" content="Libxml2 devhelp stylesheet"> <link rel="start" href="index.html" title="libxml2 Reference Manual"> <link rel="up" href="general.html" title="API"> <link rel="stylesheet" href="style.css" type="text/css"> <link rel="chapter" href="general.html" title="API"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <table class="navigation" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2"><tr valign="middle"> <td><a accesskey="p" href="libxml2-xmlschemastypes.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td> <td><a accesskey="u" href="general.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td> <td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td> <td><a accesskey="n" href="libxml2-xmlversion.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td> <th width="100%" align="center">libxml2 Reference Manual</th> </tr></table> <h2><span class="refentrytitle">xmlstring</span></h2> <p>xmlstring - set of routines to process strings</p> <p>type and interfaces needed for the internal string handling of the library, especially UTF8 processing. </p> <p>Author(s): Daniel Veillard </p> <div class="refsynopsisdiv"> <h2>Synopsis</h2> <pre class="synopsis">#define <a href="#BAD_CAST">BAD_CAST</a>; typedef unsigned char <a href="#xmlChar">xmlChar</a>; <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlCharStrdup">xmlCharStrdup</a> (const char * cur); <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlCharStrndup">xmlCharStrndup</a> (const char * cur, <br> int len); int <a href="#xmlCheckUTF8">xmlCheckUTF8</a> (const unsigned char * utf); int <a href="#xmlGetUTF8Char">xmlGetUTF8Char</a> (const unsigned char * utf, <br> int * len); int <a href="#xmlStrEqual">xmlStrEqual</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str1, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str2); int <a href="#xmlStrPrintf">xmlStrPrintf</a> (<a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * buf, <br> int len, <br> const char * msg, <br> ... ...); int <a href="#xmlStrQEqual">xmlStrQEqual</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * pref, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str); int <a href="#xmlStrVPrintf">xmlStrVPrintf</a> (<a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * buf, <br> int len, <br> const char * msg, <br> va_list ap); int <a href="#xmlStrcasecmp">xmlStrcasecmp</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str1, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str2); const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlStrcasestr">xmlStrcasestr</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * val); <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlStrcat">xmlStrcat</a> (<a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * cur, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * add); const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlStrchr">xmlStrchr</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str, <br> <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> val); int <a href="#xmlStrcmp">xmlStrcmp</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str1, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str2); <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlStrdup">xmlStrdup</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * cur); int <a href="#xmlStrlen">xmlStrlen</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str); int <a href="#xmlStrncasecmp">xmlStrncasecmp</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str1, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str2, <br> int len); <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlStrncat">xmlStrncat</a> (<a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * cur, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * add, <br> int len); <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlStrncatNew">xmlStrncatNew</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str1, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str2, <br> int len); int <a href="#xmlStrncmp">xmlStrncmp</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str1, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str2, <br> int len); <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlStrndup">xmlStrndup</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * cur, <br> int len); const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlStrstr">xmlStrstr</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * val); <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlStrsub">xmlStrsub</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str, <br> int start, <br> int len); int <a href="#xmlUTF8Charcmp">xmlUTF8Charcmp</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utf1, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utf2); int <a href="#xmlUTF8Size">xmlUTF8Size</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utf); int <a href="#xmlUTF8Strlen">xmlUTF8Strlen</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utf); int <a href="#xmlUTF8Strloc">xmlUTF8Strloc</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utf, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utfchar); <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlUTF8Strndup">xmlUTF8Strndup</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utf, <br> int len); const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlUTF8Strpos">xmlUTF8Strpos</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utf, <br> int pos); int <a href="#xmlUTF8Strsize">xmlUTF8Strsize</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utf, <br> int len); <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlUTF8Strsub">xmlUTF8Strsub</a> (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utf, <br> int start, <br> int len); </pre> </div> <div class="refsect1" lang="en"><h2>Description</h2></div> <div class="refsect1" lang="en"> <h2>Details</h2> <div class="refsect2" lang="en"> <div class="refsect2" lang="en"> <h3> <a name="BAD_CAST">Macro </a>BAD_CAST</h3> <pre class="programlisting">#define <a href="#BAD_CAST">BAD_CAST</a>; </pre> <p>Macro to cast a string to an <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * when one know its safe.</p> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlChar">Typedef </a>xmlChar</h3> <pre class="programlisting">unsigned char xmlChar; </pre> <p>This is a basic byte in an UTF-8 encoded string. It's unsigned allowing to pinpoint case where char * are assigned to <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * (possibly making serialization back impossible).</p> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlCharStrdup"></a>xmlCharStrdup ()</h3> <pre class="programlisting"><a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * xmlCharStrdup (const char * cur)<br> </pre> <p>a strdup for char's to xmlChar's</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>cur</tt></i>:</span></td> <td>the input char *</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>a new <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * or NULL</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlCharStrndup"></a>xmlCharStrndup ()</h3> <pre class="programlisting"><a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * xmlCharStrndup (const char * cur, <br> int len)<br> </pre> <p>a strndup for char's to xmlChar's</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>cur</tt></i>:</span></td> <td>the input char *</td> </tr> <tr> <td><span class="term"><i><tt>len</tt></i>:</span></td> <td>the len of @cur</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>a new <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * or NULL</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlCheckUTF8"></a>xmlCheckUTF8 ()</h3> <pre class="programlisting">int xmlCheckUTF8 (const unsigned char * utf)<br> </pre> <p>Checks @utf for being valid UTF-8. @utf is assumed to be null-terminated. This function is not super-strict, as it will allow longer UTF-8 sequences than necessary. Note that Java is capable of producing these sequences if provoked. Also note, this routine checks for the 4-byte maximum size, but does not check for 0x10ffff maximum value.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>utf</tt></i>:</span></td> <td>Pointer to putative UTF-8 encoded string.</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>value: true if @utf is valid.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlGetUTF8Char"></a>xmlGetUTF8Char ()</h3> <pre class="programlisting">int xmlGetUTF8Char (const unsigned char * utf, <br> int * len)<br> </pre> <p>Read the first UTF8 character from @utf</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>utf</tt></i>:</span></td> <td>a sequence of UTF-8 encoded bytes</td> </tr> <tr> <td><span class="term"><i><tt>len</tt></i>:</span></td> <td>a pointer to the minimum number of bytes present in the sequence. This is used to assure the next character is completely contained within the sequence.</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the char value or -1 in case of error, and sets *len to the actual number of bytes consumed (0 in case of error)</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlStrEqual"></a>xmlStrEqual ()</h3> <pre class="programlisting">int xmlStrEqual (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str1, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str2)<br> </pre> <p>Check if both strings are equal of have same content. Should be a bit more readable and faster than xmlStrcmp()</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>str1</tt></i>:</span></td> <td>the first <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> *</td> </tr> <tr> <td><span class="term"><i><tt>str2</tt></i>:</span></td> <td>the second <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> *</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>1 if they are equal, 0 if they are different</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlStrPrintf"></a>xmlStrPrintf ()</h3> <pre class="programlisting">int xmlStrPrintf (<a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * buf, <br> int len, <br> const char * msg, <br> ... ...)<br> </pre> <p>Formats @msg and places result into @buf.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>buf</tt></i>:</span></td> <td>the result buffer.</td> </tr> <tr> <td><span class="term"><i><tt>len</tt></i>:</span></td> <td>the result buffer length.</td> </tr> <tr> <td><span class="term"><i><tt>msg</tt></i>:</span></td> <td>the message with printf formatting.</td> </tr> <tr> <td><span class="term"><i><tt>...</tt></i>:</span></td> <td>extra parameters for the message.</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the number of characters written to @buf or -1 if an error occurs.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlStrQEqual"></a>xmlStrQEqual ()</h3> <pre class="programlisting">int xmlStrQEqual (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * pref, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str)<br> </pre> <p>Check if a QName is Equal to a given string</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>pref</tt></i>:</span></td> <td>the prefix of the QName</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the localname of the QName</td> </tr> <tr> <td><span class="term"><i><tt>str</tt></i>:</span></td> <td>the second <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> *</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>1 if they are equal, 0 if they are different</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlStrVPrintf"></a>xmlStrVPrintf ()</h3> <pre class="programlisting">int xmlStrVPrintf (<a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * buf, <br> int len, <br> const char * msg, <br> va_list ap)<br> </pre> <p>Formats @msg and places result into @buf.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>buf</tt></i>:</span></td> <td>the result buffer.</td> </tr> <tr> <td><span class="term"><i><tt>len</tt></i>:</span></td> <td>the result buffer length.</td> </tr> <tr> <td><span class="term"><i><tt>msg</tt></i>:</span></td> <td>the message with printf formatting.</td> </tr> <tr> <td><span class="term"><i><tt>ap</tt></i>:</span></td> <td>extra parameters for the message.</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the number of characters written to @buf or -1 if an error occurs.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlStrcasecmp"></a>xmlStrcasecmp ()</h3> <pre class="programlisting">int xmlStrcasecmp (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str1, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str2)<br> </pre> <p>a strcasecmp for xmlChar's</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>str1</tt></i>:</span></td> <td>the first <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> *</td> </tr> <tr> <td><span class="term"><i><tt>str2</tt></i>:</span></td> <td>the second <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> *</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the integer result of the comparison</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlStrcasestr"></a>xmlStrcasestr ()</h3> <pre class="programlisting">const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * xmlStrcasestr (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * val)<br> </pre> <p>a case-ignoring strstr for xmlChar's</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>str</tt></i>:</span></td> <td>the <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * array (haystack)</td> </tr> <tr> <td><span class="term"><i><tt>val</tt></i>:</span></td> <td>the <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> to search (needle)</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * for the first occurrence or NULL.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlStrcat"></a>xmlStrcat ()</h3> <pre class="programlisting"><a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * xmlStrcat (<a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * cur, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * add)<br> </pre> <p>a strcat for array of xmlChar's. Since they are supposed to be encoded in UTF-8 or an encoding with 8bit based chars, we assume a termination mark of '0'.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>cur</tt></i>:</span></td> <td>the original <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * array</td> </tr> <tr> <td><span class="term"><i><tt>add</tt></i>:</span></td> <td>the <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * array added</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>a new <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * containing the concatenated string. The original @cur is reallocated and should not be freed.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlStrchr"></a>xmlStrchr ()</h3> <pre class="programlisting">const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * xmlStrchr (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str, <br> <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> val)<br> </pre> <p>a strchr for xmlChar's</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>str</tt></i>:</span></td> <td>the <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * array</td> </tr> <tr> <td><span class="term"><i><tt>val</tt></i>:</span></td> <td>the <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> to search</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * for the first occurrence or NULL.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlStrcmp"></a>xmlStrcmp ()</h3> <pre class="programlisting">int xmlStrcmp (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str1, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str2)<br> </pre> <p>a strcmp for xmlChar's</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>str1</tt></i>:</span></td> <td>the first <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> *</td> </tr> <tr> <td><span class="term"><i><tt>str2</tt></i>:</span></td> <td>the second <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> *</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the integer result of the comparison</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlStrdup"></a>xmlStrdup ()</h3> <pre class="programlisting"><a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * xmlStrdup (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * cur)<br> </pre> <p>a strdup for array of xmlChar's. Since they are supposed to be encoded in UTF-8 or an encoding with 8bit based chars, we assume a termination mark of '0'.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>cur</tt></i>:</span></td> <td>the input <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> *</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>a new <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * or NULL</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlStrlen"></a>xmlStrlen ()</h3> <pre class="programlisting">int xmlStrlen (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str)<br> </pre> <p>length of a xmlChar's string</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>str</tt></i>:</span></td> <td>the <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * array</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the number of <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> contained in the ARRAY.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlStrncasecmp"></a>xmlStrncasecmp ()</h3> <pre class="programlisting">int xmlStrncasecmp (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str1, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str2, <br> int len)<br> </pre> <p>a strncasecmp for xmlChar's</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>str1</tt></i>:</span></td> <td>the first <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> *</td> </tr> <tr> <td><span class="term"><i><tt>str2</tt></i>:</span></td> <td>the second <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> *</td> </tr> <tr> <td><span class="term"><i><tt>len</tt></i>:</span></td> <td>the max comparison length</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the integer result of the comparison</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlStrncat"></a>xmlStrncat ()</h3> <pre class="programlisting"><a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * xmlStrncat (<a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * cur, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * add, <br> int len)<br> </pre> <p>a strncat for array of xmlChar's, it will extend @cur with the len first bytes of @add. Note that if @len < 0 then this is an API error and NULL will be returned.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>cur</tt></i>:</span></td> <td>the original <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * array</td> </tr> <tr> <td><span class="term"><i><tt>add</tt></i>:</span></td> <td>the <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * array added</td> </tr> <tr> <td><span class="term"><i><tt>len</tt></i>:</span></td> <td>the length of @add</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>a new <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> *, the original @cur is reallocated and should not be freed.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlStrncatNew"></a>xmlStrncatNew ()</h3> <pre class="programlisting"><a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * xmlStrncatNew (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str1, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str2, <br> int len)<br> </pre> <p>same as xmlStrncat, but creates a new string. The original two strings are not freed. If @len is < 0 then the length will be calculated automatically.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>str1</tt></i>:</span></td> <td>first <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> string</td> </tr> <tr> <td><span class="term"><i><tt>str2</tt></i>:</span></td> <td>second <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> string</td> </tr> <tr> <td><span class="term"><i><tt>len</tt></i>:</span></td> <td>the len of @str2 or < 0</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>a new <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * or NULL</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlStrncmp"></a>xmlStrncmp ()</h3> <pre class="programlisting">int xmlStrncmp (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str1, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str2, <br> int len)<br> </pre> <p>a strncmp for xmlChar's</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>str1</tt></i>:</span></td> <td>the first <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> *</td> </tr> <tr> <td><span class="term"><i><tt>str2</tt></i>:</span></td> <td>the second <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> *</td> </tr> <tr> <td><span class="term"><i><tt>len</tt></i>:</span></td> <td>the max comparison length</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the integer result of the comparison</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlStrndup"></a>xmlStrndup ()</h3> <pre class="programlisting"><a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * xmlStrndup (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * cur, <br> int len)<br> </pre> <p>a strndup for array of xmlChar's</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>cur</tt></i>:</span></td> <td>the input <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> *</td> </tr> <tr> <td><span class="term"><i><tt>len</tt></i>:</span></td> <td>the len of @cur</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>a new <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * or NULL</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlStrstr"></a>xmlStrstr ()</h3> <pre class="programlisting">const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * xmlStrstr (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * val)<br> </pre> <p>a strstr for xmlChar's</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>str</tt></i>:</span></td> <td>the <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * array (haystack)</td> </tr> <tr> <td><span class="term"><i><tt>val</tt></i>:</span></td> <td>the <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> to search (needle)</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * for the first occurrence or NULL.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlStrsub"></a>xmlStrsub ()</h3> <pre class="programlisting"><a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * xmlStrsub (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str, <br> int start, <br> int len)<br> </pre> <p>Extract a substring of a given string</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>str</tt></i>:</span></td> <td>the <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * array (haystack)</td> </tr> <tr> <td><span class="term"><i><tt>start</tt></i>:</span></td> <td>the index of the first char (zero based)</td> </tr> <tr> <td><span class="term"><i><tt>len</tt></i>:</span></td> <td>the length of the substring</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * for the first occurrence or NULL.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlUTF8Charcmp"></a>xmlUTF8Charcmp ()</h3> <pre class="programlisting">int xmlUTF8Charcmp (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utf1, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utf2)<br> </pre> <p>compares the two UCS4 values</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>utf1</tt></i>:</span></td> <td>pointer to first UTF8 char</td> </tr> <tr> <td><span class="term"><i><tt>utf2</tt></i>:</span></td> <td>pointer to second UTF8 char</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>result of the compare as with <a href="libxml2-xmlstring.html#xmlStrncmp">xmlStrncmp</a> </td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlUTF8Size"></a>xmlUTF8Size ()</h3> <pre class="programlisting">int xmlUTF8Size (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utf)<br> </pre> <p>calculates the internal size of a UTF8 character</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>utf</tt></i>:</span></td> <td>pointer to the UTF8 character</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the numbers of bytes in the character, -1 on format error</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlUTF8Strlen"></a>xmlUTF8Strlen ()</h3> <pre class="programlisting">int xmlUTF8Strlen (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utf)<br> </pre> <p>compute the length of an UTF8 string, it doesn't do a full UTF8 checking of the content of the string.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>utf</tt></i>:</span></td> <td>a sequence of UTF-8 encoded bytes</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the number of characters in the string or -1 in case of error</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlUTF8Strloc"></a>xmlUTF8Strloc ()</h3> <pre class="programlisting">int xmlUTF8Strloc (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utf, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utfchar)<br> </pre> <p>a function to provide the relative location of a UTF8 char</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>utf</tt></i>:</span></td> <td>the input UTF8 *</td> </tr> <tr> <td><span class="term"><i><tt>utfchar</tt></i>:</span></td> <td>the UTF8 character to be found</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the relative character position of the desired char or -1 if not found</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlUTF8Strndup"></a>xmlUTF8Strndup ()</h3> <pre class="programlisting"><a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * xmlUTF8Strndup (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utf, <br> int len)<br> </pre> <p>a strndup for array of UTF8's</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>utf</tt></i>:</span></td> <td>the input UTF8 *</td> </tr> <tr> <td><span class="term"><i><tt>len</tt></i>:</span></td> <td>the len of @utf (in chars)</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>a new UTF8 * or NULL</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlUTF8Strpos"></a>xmlUTF8Strpos ()</h3> <pre class="programlisting">const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * xmlUTF8Strpos (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utf, <br> int pos)<br> </pre> <p>a function to provide the equivalent of fetching a character from a string array</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>utf</tt></i>:</span></td> <td>the input UTF8 *</td> </tr> <tr> <td><span class="term"><i><tt>pos</tt></i>:</span></td> <td>the position of the desired UTF8 char (in chars)</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>a pointer to the UTF8 character or NULL</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlUTF8Strsize"></a>xmlUTF8Strsize ()</h3> <pre class="programlisting">int xmlUTF8Strsize (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utf, <br> int len)<br> </pre> <p>storage size of an UTF8 string the behaviour is not guaranteed if the input string is not UTF-8</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>utf</tt></i>:</span></td> <td>a sequence of UTF-8 encoded bytes</td> </tr> <tr> <td><span class="term"><i><tt>len</tt></i>:</span></td> <td>the number of characters in the array</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the storage size of the first 'len' characters of ARRAY</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlUTF8Strsub"></a>xmlUTF8Strsub ()</h3> <pre class="programlisting"><a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * xmlUTF8Strsub (const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * utf, <br> int start, <br> int len)<br> </pre> <p>Create a substring from a given UTF-8 string Note: positions are given in units of UTF-8 chars</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>utf</tt></i>:</span></td> <td>a sequence of UTF-8 encoded bytes</td> </tr> <tr> <td><span class="term"><i><tt>start</tt></i>:</span></td> <td>relative pos of first char</td> </tr> <tr> <td><span class="term"><i><tt>len</tt></i>:</span></td> <td>total number to copy</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>a pointer to a newly created string or NULL if the start index is out of bounds or a memory allocation failed. If len is too large, the result is truncated.</td> </tr> </tbody> </table></div> </div> <hr> </div> </div> </body> </html>