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href="glib-Strings.html#id3279118" title="Description"><link rel="section" href="glib-Strings.html#id3279140" title="Details"><meta name="generator" content="GTK-Doc V1.2 (XML mode)"><link rel="stylesheet" href="style.css" type="text/css"></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="glib-Hash-Tables.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td><td><a accesskey="u" href="glib-data-types.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><th width="100%" align="center">GLib Reference Manual</th><td><a accesskey="n" href="glib-String-Chunks.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td></tr></table><div class="refentry" lang="en"><a name="glib-Strings"></a><div class="titlepage"><div></div><div></div></div><div class="refnamediv"><h2><span class="refentrytitle">Strings</span></h2><p>Strings — text buffers which grow automatically as text is added.</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis"> #include <glib.h> struct <a href="glib-Strings.html#GString">GString</a>; <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-new">g_string_new</a> (const <a href="glib-Basic-Types.html#gchar">gchar</a> *init); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-new-len">g_string_new_len</a> (const <a href="glib-Basic-Types.html#gchar">gchar</a> *init, <a href="glib-Basic-Types.html#gssize">gssize</a> len); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-sized-new">g_string_sized_new</a> (<a href="glib-Basic-Types.html#gsize">gsize</a> dfl_size); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-assign">g_string_assign</a> (<a href="glib-Strings.html#GString">GString</a> *string, const <a href="glib-Basic-Types.html#gchar">gchar</a> *rval); #define <a href="glib-Strings.html#g-string-sprintf">g_string_sprintf</a> #define <a href="glib-Strings.html#g-string-sprintfa">g_string_sprintfa</a> void <a href="glib-Strings.html#g-string-printf">g_string_printf</a> (<a href="glib-Strings.html#GString">GString</a> *string, const <a href="glib-Basic-Types.html#gchar">gchar</a> *format, ...); void <a href="glib-Strings.html#g-string-append-printf">g_string_append_printf</a> (<a href="glib-Strings.html#GString">GString</a> *string, const <a href="glib-Basic-Types.html#gchar">gchar</a> *format, ...); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-append">g_string_append</a> (<a href="glib-Strings.html#GString">GString</a> *string, const <a href="glib-Basic-Types.html#gchar">gchar</a> *val); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-append-c">g_string_append_c</a> (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gchar">gchar</a> c); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-append-unichar">g_string_append_unichar</a> (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Unicode-Manipulation.html#gunichar">gunichar</a> wc); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-append-len">g_string_append_len</a> (<a href="glib-Strings.html#GString">GString</a> *string, const <a href="glib-Basic-Types.html#gchar">gchar</a> *val, <a href="glib-Basic-Types.html#gssize">gssize</a> len); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-prepend">g_string_prepend</a> (<a href="glib-Strings.html#GString">GString</a> *string, const <a href="glib-Basic-Types.html#gchar">gchar</a> *val); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-prepend-c">g_string_prepend_c</a> (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gchar">gchar</a> c); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-prepend-unichar">g_string_prepend_unichar</a> (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Unicode-Manipulation.html#gunichar">gunichar</a> wc); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-prepend-len">g_string_prepend_len</a> (<a href="glib-Strings.html#GString">GString</a> *string, const <a href="glib-Basic-Types.html#gchar">gchar</a> *val, <a href="glib-Basic-Types.html#gssize">gssize</a> len); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-insert">g_string_insert</a> (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gssize">gssize</a> pos, const <a href="glib-Basic-Types.html#gchar">gchar</a> *val); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-insert-c">g_string_insert_c</a> (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gssize">gssize</a> pos, <a href="glib-Basic-Types.html#gchar">gchar</a> c); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-insert-unichar">g_string_insert_unichar</a> (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gssize">gssize</a> pos, <a href="glib-Unicode-Manipulation.html#gunichar">gunichar</a> wc); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-insert-len">g_string_insert_len</a> (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gssize">gssize</a> pos, const <a href="glib-Basic-Types.html#gchar">gchar</a> *val, <a href="glib-Basic-Types.html#gssize">gssize</a> len); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-erase">g_string_erase</a> (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gssize">gssize</a> pos, <a href="glib-Basic-Types.html#gssize">gssize</a> len); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-truncate">g_string_truncate</a> (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gsize">gsize</a> len); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-set-size">g_string_set_size</a> (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gsize">gsize</a> len); <a href="glib-Basic-Types.html#gchar">gchar</a>* <a href="glib-Strings.html#g-string-free">g_string_free</a> (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gboolean">gboolean</a> free_segment); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-up">g_string_up</a> (<a href="glib-Strings.html#GString">GString</a> *string); <a href="glib-Strings.html#GString">GString</a>* <a href="glib-Strings.html#g-string-down">g_string_down</a> (<a href="glib-Strings.html#GString">GString</a> *string); <a href="glib-Basic-Types.html#guint">guint</a> <a href="glib-Strings.html#g-string-hash">g_string_hash</a> (const <a href="glib-Strings.html#GString">GString</a> *str); <a href="glib-Basic-Types.html#gboolean">gboolean</a> <a href="glib-Strings.html#g-string-equal">g_string_equal</a> (const <a href="glib-Strings.html#GString">GString</a> *v, const <a href="glib-Strings.html#GString">GString</a> *v2); </pre></div><div class="refsect1" lang="en"><a name="id3279118"></a><h2>Description</h2><p> A <a href="glib-Strings.html#GString"><span class="type">GString</span></a> is similar to a standard C string, except that it grows automatically as text is appended or inserted. Also, it stores the length of the string, so can be used for binary data with embedded nul bytes. </p></div><div class="refsect1" lang="en"><a name="id3279140"></a><h2>Details</h2><div class="refsect2" lang="en"><a name="id3279145"></a><h3><a name="GString"></a>struct GString</h3><a class="indexterm" name="id3279156"></a><pre class="programlisting">struct GString { gchar *str; gsize len; gsize allocated_len; }; </pre><p> The <a href="glib-Strings.html#GString"><span class="type">GString</span></a> struct contains the public fields of a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. The <i class="structfield"><tt>str</tt></i> field points to the character data. It may move as text is added. The <i class="structfield"><tt>len</tt></i> field contains the length of the string, not including the terminating nul character. </p><p> The <i class="structfield"><tt>str</tt></i> field is nul-terminated and so can be used as an ordinary C string. But it may be moved when text is appended or inserted into the string. </p></div><hr><div class="refsect2" lang="en"><a name="id3279207"></a><h3><a name="g-string-new"></a>g_string_new ()</h3><a class="indexterm" name="id3279218"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_new (const <a href="glib-Basic-Types.html#gchar">gchar</a> *init);</pre><p> Creates a new <a href="glib-Strings.html#GString"><span class="type">GString</span></a>, initialized with the given string. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>init</tt></i> :</span></td><td>the initial text to copy into the string. </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td>the new <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3279292"></a><h3><a name="g-string-new-len"></a>g_string_new_len ()</h3><a class="indexterm" name="id3279302"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_new_len (const <a href="glib-Basic-Types.html#gchar">gchar</a> *init, <a href="glib-Basic-Types.html#gssize">gssize</a> len);</pre><p> Creates a new <a href="glib-Strings.html#GString"><span class="type">GString</span></a> with <i class="parameter"><tt>len</tt></i> bytes of the <i class="parameter"><tt>init</tt></i> buffer. Because a length is provided, <i class="parameter"><tt>init</tt></i> need not be nul-terminated, and can contain embedded nul bytes. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>init</tt></i> :</span></td><td>initial contents of string. </td></tr><tr><td><span class="term"><i class="parameter"><tt>len</tt></i> :</span></td><td>length of <i class="parameter"><tt>init</tt></i> to use. </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td>a new <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3279422"></a><h3><a name="g-string-sized-new"></a>g_string_sized_new ()</h3><a class="indexterm" name="id3279433"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_sized_new (<a href="glib-Basic-Types.html#gsize">gsize</a> dfl_size);</pre><p> Creates a new <a href="glib-Strings.html#GString"><span class="type">GString</span></a>, with enough space for <i class="parameter"><tt>dfl_size</tt></i> characters. This is useful if you are going to add a lot of text to the string and don't want it to be reallocated too often. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>dfl_size</tt></i> :</span></td><td>the default size of the space allocated to hold the string. </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td>the new <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3279514"></a><h3><a name="g-string-assign"></a>g_string_assign ()</h3><a class="indexterm" name="id3279525"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_assign (<a href="glib-Strings.html#GString">GString</a> *string, const <a href="glib-Basic-Types.html#gchar">gchar</a> *rval);</pre><p> Copies the characters from a string into a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>, destroying any previous contents. It is rather like the standard <tt class="function"><tt class="function">strcpy()</tt></tt> function, except that you do not have to worry about having enough space to copy the string. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td>the destination <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. Its current contents are destroyed. </td></tr><tr><td><span class="term"><i class="parameter"><tt>rval</tt></i> :</span></td><td> </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td>the destination <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3279644"></a><h3><a name="g-string-sprintf"></a>g_string_sprintf</h3><a class="indexterm" name="id3279655"></a><pre class="programlisting">#define g_string_sprintf</pre><div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Warning</h3><p><tt class="literal">g_string_sprintf</tt> is deprecated and should not be used in newly-written code. This function has been renamed to <a href="glib-Strings.html#g-string-printf"><tt class="function">g_string_printf()</tt></a>.</p></div><p> Writes a formatted string into a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. This is similar to the standard <tt class="function"><tt class="function">sprintf()</tt></tt> function, except that the <a href="glib-Strings.html#GString"><span class="type">GString</span></a> buffer automatically expands to contain the results. The previous contents of the <a href="glib-Strings.html#GString"><span class="type">GString</span></a> are destroyed. </p></div><hr><div class="refsect2" lang="en"><a name="id3279734"></a><h3><a name="g-string-sprintfa"></a>g_string_sprintfa</h3><a class="indexterm" name="id3279745"></a><pre class="programlisting">#define g_string_sprintfa</pre><div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Warning</h3><p><tt class="literal">g_string_sprintfa</tt> is deprecated and should not be used in newly-written code. This function has been renamed to <a href="glib-Strings.html#g-string-append-printf"><tt class="function">g_string_append_printf()</tt></a>.</p></div><p> Appends a formatted string onto the end of a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. This function is is similar to <a href="glib-Strings.html#g-string-sprintf"><tt class="function">g_string_sprintf()</tt></a> except that the text is appended to the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </p></div><hr><div class="refsect2" lang="en"><a name="id3279812"></a><h3><a name="g-string-printf"></a>g_string_printf ()</h3><a class="indexterm" name="id3279823"></a><pre class="programlisting">void g_string_printf (<a href="glib-Strings.html#GString">GString</a> *string, const <a href="glib-Basic-Types.html#gchar">gchar</a> *format, ...);</pre><p> Writes a formatted string into a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. This is similar to the standard <tt class="function"><tt class="function">sprintf()</tt></tt> function, except that the <a href="glib-Strings.html#GString"><span class="type">GString</span></a> buffer automatically expands to contain the results. The previous contents of the <a href="glib-Strings.html#GString"><span class="type">GString</span></a> are destroyed. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td>a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><i class="parameter"><tt>format</tt></i> :</span></td><td>the string format. See the <tt class="function"><tt class="function">printf()</tt></tt> documentation. </td></tr><tr><td><span class="term"><i class="parameter"><tt>...</tt></i> :</span></td><td>the parameters to insert into the format string. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3279971"></a><h3><a name="g-string-append-printf"></a>g_string_append_printf ()</h3><a class="indexterm" name="id3279982"></a><pre class="programlisting">void g_string_append_printf (<a href="glib-Strings.html#GString">GString</a> *string, const <a href="glib-Basic-Types.html#gchar">gchar</a> *format, ...);</pre><p> Appends a formatted string onto the end of a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. This function is is similar to <a href="glib-Strings.html#g-string-printf"><tt class="function">g_string_printf()</tt></a> except that the text is appended to the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td>a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><i class="parameter"><tt>format</tt></i> :</span></td><td>the string format. See the <tt class="function"><tt class="function">printf()</tt></tt> documentation. </td></tr><tr><td><span class="term"><i class="parameter"><tt>...</tt></i> :</span></td><td>the parameters to insert into the format string. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3280113"></a><h3><a name="g-string-append"></a>g_string_append ()</h3><a class="indexterm" name="id3280123"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_append (<a href="glib-Strings.html#GString">GString</a> *string, const <a href="glib-Basic-Types.html#gchar">gchar</a> *val);</pre><p> Adds a string onto the end of a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>, expanding it if necessary. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td>a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><i class="parameter"><tt>val</tt></i> :</span></td><td>the string to append onto the end of the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td>the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3280234"></a><h3><a name="g-string-append-c"></a>g_string_append_c ()</h3><a class="indexterm" name="id3280245"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_append_c (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gchar">gchar</a> c);</pre><p> Adds a character onto the end of a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>, expanding it if necessary. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td>a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><i class="parameter"><tt>c</tt></i> :</span></td><td>the character to append onto the end of the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td>the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3280355"></a><h3><a name="g-string-append-unichar"></a>g_string_append_unichar ()</h3><a class="indexterm" name="id3280366"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_append_unichar (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Unicode-Manipulation.html#gunichar">gunichar</a> wc);</pre><p> Converts a Unicode character into UTF-8, and appends it to the string.</p><p> </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td> a <a href="glib-Strings.html#GString"><span class="type">GString</span></a> </td></tr><tr><td><span class="term"><i class="parameter"><tt>wc</tt></i> :</span></td><td> a Unicode character </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td> <i class="parameter"><tt>string</tt></i> </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3280462"></a><h3><a name="g-string-append-len"></a>g_string_append_len ()</h3><a class="indexterm" name="id3280474"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_append_len (<a href="glib-Strings.html#GString">GString</a> *string, const <a href="glib-Basic-Types.html#gchar">gchar</a> *val, <a href="glib-Basic-Types.html#gssize">gssize</a> len);</pre><p> Appends <i class="parameter"><tt>len</tt></i> bytes of <i class="parameter"><tt>val</tt></i> to <i class="parameter"><tt>string</tt></i>. Because <i class="parameter"><tt>len</tt></i> is provided, <i class="parameter"><tt>val</tt></i> may contain embedded nuls and need not be nul-terminated. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td>a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><i class="parameter"><tt>val</tt></i> :</span></td><td>bytes to append. </td></tr><tr><td><span class="term"><i class="parameter"><tt>len</tt></i> :</span></td><td>number of bytes of <i class="parameter"><tt>val</tt></i> to use. </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td>the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3280624"></a><h3><a name="g-string-prepend"></a>g_string_prepend ()</h3><a class="indexterm" name="id3280635"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_prepend (<a href="glib-Strings.html#GString">GString</a> *string, const <a href="glib-Basic-Types.html#gchar">gchar</a> *val);</pre><p> Adds a string on to the start of a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>, expanding it if necessary. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td>a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><i class="parameter"><tt>val</tt></i> :</span></td><td>the string to prepend on the start of the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td>the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3280745"></a><h3><a name="g-string-prepend-c"></a>g_string_prepend_c ()</h3><a class="indexterm" name="id3280757"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_prepend_c (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gchar">gchar</a> c);</pre><p> Adds a character onto the start of a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>, expanding it if necessary. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td>a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><i class="parameter"><tt>c</tt></i> :</span></td><td>the character to prepend on the start of the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td>the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3280867"></a><h3><a name="g-string-prepend-unichar"></a>g_string_prepend_unichar ()</h3><a class="indexterm" name="id3280878"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_prepend_unichar (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Unicode-Manipulation.html#gunichar">gunichar</a> wc);</pre><p> Converts a Unicode character into UTF-8, and prepends it to the string.</p><p> </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td> a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><i class="parameter"><tt>wc</tt></i> :</span></td><td> a Unicode character. </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td> <i class="parameter"><tt>string</tt></i>. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3280974"></a><h3><a name="g-string-prepend-len"></a>g_string_prepend_len ()</h3><a class="indexterm" name="id3280985"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_prepend_len (<a href="glib-Strings.html#GString">GString</a> *string, const <a href="glib-Basic-Types.html#gchar">gchar</a> *val, <a href="glib-Basic-Types.html#gssize">gssize</a> len);</pre><p> Prepends <i class="parameter"><tt>len</tt></i> bytes of <i class="parameter"><tt>val</tt></i> to <i class="parameter"><tt>string</tt></i>. Because <i class="parameter"><tt>len</tt></i> is provided, <i class="parameter"><tt>val</tt></i> may contain embedded nuls and need not be nul-terminated. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td>a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><i class="parameter"><tt>val</tt></i> :</span></td><td>bytes to prepend. </td></tr><tr><td><span class="term"><i class="parameter"><tt>len</tt></i> :</span></td><td>number of bytes in <i class="parameter"><tt>val</tt></i> to prepend. </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td>the <a href="glib-Strings.html#GString"><span class="type">GString</span></a> passed in. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3281135"></a><h3><a name="g-string-insert"></a>g_string_insert ()</h3><a class="indexterm" name="id3281146"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_insert (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gssize">gssize</a> pos, const <a href="glib-Basic-Types.html#gchar">gchar</a> *val);</pre><p> Inserts a copy of a string into a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>, expanding it if necessary. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td>a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><i class="parameter"><tt>pos</tt></i> :</span></td><td>the position to insert the copy of the string. </td></tr><tr><td><span class="term"><i class="parameter"><tt>val</tt></i> :</span></td><td>the string to insert. </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td>the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3281271"></a><h3><a name="g-string-insert-c"></a>g_string_insert_c ()</h3><a class="indexterm" name="id3281282"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_insert_c (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gssize">gssize</a> pos, <a href="glib-Basic-Types.html#gchar">gchar</a> c);</pre><p> Inserts a character into a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>, expanding it if necessary. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td>a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><i class="parameter"><tt>pos</tt></i> :</span></td><td>the position to insert the character. </td></tr><tr><td><span class="term"><i class="parameter"><tt>c</tt></i> :</span></td><td>the character to insert. </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td>the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3281406"></a><h3><a name="g-string-insert-unichar"></a>g_string_insert_unichar ()</h3><a class="indexterm" name="id3281417"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_insert_unichar (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gssize">gssize</a> pos, <a href="glib-Unicode-Manipulation.html#gunichar">gunichar</a> wc);</pre><p> Converts a Unicode character into UTF-8, and insert it into the string at the given position.</p><p> </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td> a <a href="glib-Strings.html#GString"><span class="type">GString</span></a> </td></tr><tr><td><span class="term"><i class="parameter"><tt>pos</tt></i> :</span></td><td> the position at which to insert character, or -1 to append at the end of the string. </td></tr><tr><td><span class="term"><i class="parameter"><tt>wc</tt></i> :</span></td><td> a Unicode character </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td> <i class="parameter"><tt>string</tt></i> </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3281536"></a><h3><a name="g-string-insert-len"></a>g_string_insert_len ()</h3><a class="indexterm" name="id3281547"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_insert_len (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gssize">gssize</a> pos, const <a href="glib-Basic-Types.html#gchar">gchar</a> *val, <a href="glib-Basic-Types.html#gssize">gssize</a> len);</pre><p> Inserts <i class="parameter"><tt>len</tt></i> bytes of <i class="parameter"><tt>val</tt></i> into <i class="parameter"><tt>string</tt></i> at <i class="parameter"><tt>pos</tt></i>. Because <i class="parameter"><tt>len</tt></i> is provided, <i class="parameter"><tt>val</tt></i> may contain embedded nuls and need not be nul-terminated. If <i class="parameter"><tt>pos</tt></i> is -1, bytes are inserted at the end of the string. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td>a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><i class="parameter"><tt>pos</tt></i> :</span></td><td>position in <i class="parameter"><tt>string</tt></i> where insertion should happen, or -1 for at the end. </td></tr><tr><td><span class="term"><i class="parameter"><tt>val</tt></i> :</span></td><td>bytes to insert. </td></tr><tr><td><span class="term"><i class="parameter"><tt>len</tt></i> :</span></td><td>number of bytes of <i class="parameter"><tt>val</tt></i> to insert. </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td>the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3281738"></a><h3><a name="g-string-erase"></a>g_string_erase ()</h3><a class="indexterm" name="id3281748"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_erase (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gssize">gssize</a> pos, <a href="glib-Basic-Types.html#gssize">gssize</a> len);</pre><p> Removes <i class="parameter"><tt>len</tt></i> characters from a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>, starting at position <i class="parameter"><tt>pos</tt></i>. The rest of the <a href="glib-Strings.html#GString"><span class="type">GString</span></a> is shifted down to fill the gap. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td>a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><i class="parameter"><tt>pos</tt></i> :</span></td><td>the position of the characters to remove. </td></tr><tr><td><span class="term"><i class="parameter"><tt>len</tt></i> :</span></td><td>the number of characters to remove, or -1 to remove all following characters. </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td>the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3281893"></a><h3><a name="g-string-truncate"></a>g_string_truncate ()</h3><a class="indexterm" name="id3281904"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_truncate (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gsize">gsize</a> len);</pre><p> Cuts off the end of the GString, leaving the first <i class="parameter"><tt>len</tt></i> characters. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td>a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><i class="parameter"><tt>len</tt></i> :</span></td><td>the new size of the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td>the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3282011"></a><h3><a name="g-string-set-size"></a>g_string_set_size ()</h3><a class="indexterm" name="id3282022"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_set_size (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gsize">gsize</a> len);</pre><p> Sets the length of a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. If the length is less than the current length, the string will be truncated. If the length is greater than the current length, the contents of the newly added area are undefined. (However, as always, string->str[string->len] will be a nul byte.)</p><p> </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td> a <a href="glib-Strings.html#GString"><span class="type">GString</span></a> </td></tr><tr><td><span class="term"><i class="parameter"><tt>len</tt></i> :</span></td><td> the new length </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td> <i class="parameter"><tt>string</tt></i> </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3282128"></a><h3><a name="g-string-free"></a>g_string_free ()</h3><a class="indexterm" name="id3282139"></a><pre class="programlisting"><a href="glib-Basic-Types.html#gchar">gchar</a>* g_string_free (<a href="glib-Strings.html#GString">GString</a> *string, <a href="glib-Basic-Types.html#gboolean">gboolean</a> free_segment);</pre><p> Frees the memory allocated for the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. If <i class="parameter"><tt>free_segment</tt></i> is <tt class="literal">TRUE</tt> it also frees the character data. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td>a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><i class="parameter"><tt>free_segment</tt></i> :</span></td><td>if <tt class="literal">TRUE</tt> the actual character data is freed as well. </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td>the character data of <i class="parameter"><tt>string</tt></i> (i.e. <tt class="literal">NULL</tt> if <i class="parameter"><tt>free_segment</tt></i> is <tt class="literal">TRUE</tt>) </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3282277"></a><h3><a name="g-string-up"></a>g_string_up ()</h3><a class="indexterm" name="id3282287"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_up (<a href="glib-Strings.html#GString">GString</a> *string);</pre><div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Warning</h3><p><tt class="literal">g_string_up</tt> is deprecated and should not be used in newly-written code. This function uses the locale-specific <tt class="function">toupper()</tt> function, which is almost never the right thing. Use <a href="glib-String-Utility-Functions.html#g-string-ascii-up"><tt class="function">g_string_ascii_up()</tt></a> or <a href="glib-Unicode-Manipulation.html#g-utf8-strup"><tt class="function">g_utf8_strup()</tt></a> instead.</p></div><p> Converts a <a href="glib-Strings.html#GString"><span class="type">GString</span></a> to uppercase.</p><p> </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td> a <a href="glib-Strings.html#GString"><span class="type">GString</span></a> </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td> the <a href="glib-Strings.html#GString"><span class="type">GString</span></a> </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3282416"></a><h3><a name="g-string-down"></a>g_string_down ()</h3><a class="indexterm" name="id3282426"></a><pre class="programlisting"><a href="glib-Strings.html#GString">GString</a>* g_string_down (<a href="glib-Strings.html#GString">GString</a> *string);</pre><div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Warning</h3><p><tt class="literal">g_string_down</tt> is deprecated and should not be used in newly-written code. This function uses the locale-specific <tt class="function">tolower()</tt> function, which is almost never the right thing. Use <a href="glib-String-Utility-Functions.html#g-string-ascii-down"><tt class="function">g_string_ascii_down()</tt></a> or <a href="glib-Unicode-Manipulation.html#g-utf8-strdown"><tt class="function">g_utf8_strdown()</tt></a> instead.</p></div><p> Converts a <a href="glib-Strings.html#GString"><span class="type">GString</span></a> to lowercase.</p><p> </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>string</tt></i> :</span></td><td> a <a href="glib-Strings.html#GString"><span class="type">GString</span></a> </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td> the <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3282555"></a><h3><a name="g-string-hash"></a>g_string_hash ()</h3><a class="indexterm" name="id3282566"></a><pre class="programlisting"><a href="glib-Basic-Types.html#guint">guint</a> g_string_hash (const <a href="glib-Strings.html#GString">GString</a> *str);</pre><p> Creates a hash code for <i class="parameter"><tt>str</tt></i>; for use with <a href="glib-Hash-Tables.html#GHashTable"><span class="type">GHashTable</span></a>. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>str</tt></i> :</span></td><td>a string to hash. </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td>hash code for <i class="parameter"><tt>str</tt></i>. </td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3282642"></a><h3><a name="g-string-equal"></a>g_string_equal ()</h3><a class="indexterm" name="id3282652"></a><pre class="programlisting"><a href="glib-Basic-Types.html#gboolean">gboolean</a> g_string_equal (const <a href="glib-Strings.html#GString">GString</a> *v, const <a href="glib-Strings.html#GString">GString</a> *v2);</pre><p> Compares two strings for equality, returning <tt class="literal">TRUE</tt> if they are equal. For use with <a href="glib-Hash-Tables.html#GHashTable"><span class="type">GHashTable</span></a>. </p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><i class="parameter"><tt>v</tt></i> :</span></td><td>a <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><i class="parameter"><tt>v2</tt></i> :</span></td><td>another <a href="glib-Strings.html#GString"><span class="type">GString</span></a>. </td></tr><tr><td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td><td><tt class="literal">TRUE</tt> if they strings are the same length and contain the same bytes. </td></tr></tbody></table></div></div></div></div><table class="navigation" width="100%" summary="Navigation footer" cellpadding="2" cellspacing="0"><tr valign="middle"><td align="left"><a accesskey="p" href="glib-Hash-Tables.html"><b><< Hash Tables</b></a></td><td align="right"><a accesskey="n" href="glib-String-Chunks.html"><b>String Chunks >></b></a></td></tr></table></body></html>