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<!DOCTYPE html>
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Header: mruby/string.h
— Documentation by YARD 0.9.20
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<div id="content"><h1>Header: mruby/string.h</h1>
<h2>Overview</h2>
<div class="docstring">
<div class="discussion">
<p>String class</p>
</div>
</div>
<div class="tags">
</div>
<!-- TODO: Included headers -->
<h2>
Function Summary
<small><a href="#" class="summary_toggle">collapse</a></small>
</h2>
<ul class="summary">
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_strlen-function" title="mrb_str_strlen">mrb_int <strong>mrb_str_strlen</strong>(mrb_state*, struct RString*)</a>
</span>
<span class="summary_desc"><div class='inline'>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_modify-function" title="mrb_str_modify">void <strong>mrb_str_modify</strong>(mrb_state *, struct RString *)</a>
</span>
<span class="summary_desc"><div class='inline'>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_modify_keep_ascii-function" title="mrb_str_modify_keep_ascii">void <strong>mrb_str_modify_keep_ascii</strong>(mrb_state *, struct RString *)</a>
</span>
<span class="summary_desc"><div class='inline'><p>mrb_str_modify() with keeping ASCII flag if set.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_index-function" title="mrb_str_index">mrb_int <strong>mrb_str_index</strong>(mrb_state *, mrb_value, const char *, mrb_int, mrb_int)</a>
</span>
<span class="summary_desc"><div class='inline'><p>Finds the index of a substring in a string.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_concat-function" title="mrb_str_concat">void <strong>mrb_str_concat</strong>(mrb_state *, mrb_value, mrb_value)</a>
</span>
<span class="summary_desc"><div class='inline'><p>Appends self to other.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_plus-function" title="mrb_str_plus">mrb_value <strong>mrb_str_plus</strong>(mrb_state *, mrb_value, mrb_value)</a>
</span>
<span class="summary_desc"><div class='inline'><p>Adds two strings together.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_ptr_to_str-function" title="mrb_ptr_to_str">mrb_value <strong>mrb_ptr_to_str</strong>(mrb_state *, void *)</a>
</span>
<span class="summary_desc"><div class='inline'><p>Converts pointer into a Ruby string.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_obj_as_string-function" title="mrb_obj_as_string">mrb_value <strong>mrb_obj_as_string</strong>(mrb_state *, mrb_value)</a>
</span>
<span class="summary_desc"><div class='inline'><p>Returns an object as a Ruby string.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_resize-function" title="mrb_str_resize">mrb_value <strong>mrb_str_resize</strong>(mrb_state *, mrb_value, mrb_int)</a>
</span>
<span class="summary_desc"><div class='inline'><p>Resizes the string’s length.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_substr-function" title="mrb_str_substr">mrb_value <strong>mrb_str_substr</strong>(mrb_state *, mrb_value, mrb_int, mrb_int)</a>
</span>
<span class="summary_desc"><div class='inline'><p>Returns a sub string.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_ensure_string_type-function" title="mrb_ensure_string_type">mrb_value <strong>mrb_ensure_string_type</strong>(mrb_state *, mrb_value)</a>
</span>
<span class="summary_desc"><div class='inline'><p>Returns a Ruby string type.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_check_string_type-function" title="mrb_check_string_type">mrb_value <strong>mrb_check_string_type</strong>(mrb_state *, mrb_value)</a>
</span>
<span class="summary_desc"><div class='inline'>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_string_type-function" title="mrb_string_type">mrb_value <strong>mrb_string_type</strong>(mrb_state *, mrb_value)</a>
</span>
<span class="summary_desc"><div class='inline'><p>obsolete: use mrb_ensure_string_type() instead.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_new_capa-function" title="mrb_str_new_capa">mrb_value <strong>mrb_str_new_capa</strong>(mrb_state *, size_t)</a>
</span>
<span class="summary_desc"><div class='inline'>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_buf_new-function" title="mrb_str_buf_new">mrb_value <strong>mrb_str_buf_new</strong>(mrb_state *, size_t)</a>
</span>
<span class="summary_desc"><div class='inline'>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_string_value_len-function" title="mrb_string_value_len">mrb_int <strong>mrb_string_value_len</strong>(mrb_state *, mrb_value)</a>
</span>
<span class="summary_desc"><div class='inline'><p>obslete: use RSTRING_LEN().</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_dup-function" title="mrb_str_dup">mrb_value <strong>mrb_str_dup</strong>(mrb_state *, mrb_value)</a>
</span>
<span class="summary_desc"><div class='inline'><p>Duplicates a string object.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_intern-function" title="mrb_str_intern">mrb_value <strong>mrb_str_intern</strong>(mrb_state *, mrb_value)</a>
</span>
<span class="summary_desc"><div class='inline'><p>Returns a symbol from a passed in Ruby string.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_to_inum-function" title="mrb_str_to_inum">mrb_value <strong>mrb_str_to_inum</strong>(mrb_state *, mrb_value, mrb_int, mrb_bool)</a>
</span>
<span class="summary_desc"><div class='inline'>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_cstr_to_inum-function" title="mrb_cstr_to_inum">mrb_value <strong>mrb_cstr_to_inum</strong>(mrb_state *, const char *, mrb_int, mrb_bool)</a>
</span>
<span class="summary_desc"><div class='inline'>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_to_dbl-function" title="mrb_str_to_dbl">double <strong>mrb_str_to_dbl</strong>(mrb_state *, mrb_value, mrb_bool)</a>
</span>
<span class="summary_desc"><div class='inline'>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_cstr_to_dbl-function" title="mrb_cstr_to_dbl">double <strong>mrb_cstr_to_dbl</strong>(mrb_state *, const char *, mrb_bool)</a>
</span>
<span class="summary_desc"><div class='inline'>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_to_str-function" title="mrb_str_to_str">mrb_value <strong>mrb_str_to_str</strong>(mrb_state *, mrb_value)</a>
</span>
<span class="summary_desc"><div class='inline'><p>Returns a converted string type.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_equal-function" title="mrb_str_equal">mrb_bool <strong>mrb_str_equal</strong>(mrb_state *, mrb_value, mrb_value)</a>
</span>
<span class="summary_desc"><div class='inline'><p>Returns true if the strings match and false if the strings don’t match.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_cat-function" title="mrb_str_cat">mrb_value <strong>mrb_str_cat</strong>(mrb_state *, mrb_value, const char *, size_t)</a>
</span>
<span class="summary_desc"><div class='inline'><p>Returns a concatenated string comprised of a Ruby string and a C string.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_cat_cstr-function" title="mrb_str_cat_cstr">mrb_value <strong>mrb_str_cat_cstr</strong>(mrb_state *, mrb_value, const char *)</a>
</span>
<span class="summary_desc"><div class='inline'><p>Returns a concatenated string comprised of a Ruby string and a C string.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_cat_str-function" title="mrb_str_cat_str">mrb_value <strong>mrb_str_cat_str</strong>(mrb_state *, mrb_value, mrb_value)</a>
</span>
<span class="summary_desc"><div class='inline'>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_append-function" title="mrb_str_append">mrb_value <strong>mrb_str_append</strong>(mrb_state *, mrb_value, mrb_value)</a>
</span>
<span class="summary_desc"><div class='inline'><p>Adds str2 to the end of str1.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_cmp-function" title="mrb_str_cmp">int <strong>mrb_str_cmp</strong>(mrb_state *, mrb_value, mrb_value)</a>
</span>
<span class="summary_desc"><div class='inline'><p>Returns 0 if both Ruby strings are equal.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#mrb_str_to_cstr-function" title="mrb_str_to_cstr">char * <strong>mrb_str_to_cstr</strong>(mrb_state *, mrb_value)</a>
</span>
<span class="summary_desc"><div class='inline'><p>Returns a newly allocated C string from a Ruby string.</p>
</div></span>
</li>
</ul>
<h2>Define Summary</h2>
<dl class="constants">
<dt id="MRUBY_STRING_H-define" class=""><small>#define</small> MRUBY_STRING_H
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTRING_EMBED_LEN_MAX-define" class=""><small>#define</small> RSTRING_EMBED_LEN_MAX
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_SET_TYPE_FLAG-define" class=""><small>#define</small> RSTR_SET_TYPE_FLAG
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_UNSET_TYPE_FLAG-define" class=""><small>#define</small> RSTR_UNSET_TYPE_FLAG
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_EMBED_P-define" class=""><small>#define</small> RSTR_EMBED_P
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_SET_EMBED_FLAG-define" class=""><small>#define</small> RSTR_SET_EMBED_FLAG
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_UNSET_EMBED_FLAG-define" class=""><small>#define</small> RSTR_UNSET_EMBED_FLAG
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_SET_EMBED_LEN-define" class=""><small>#define</small> RSTR_SET_EMBED_LEN
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_SET_LEN-define" class=""><small>#define</small> RSTR_SET_LEN
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_EMBED_PTR-define" class=""><small>#define</small> RSTR_EMBED_PTR
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_EMBED_LEN-define" class=""><small>#define</small> RSTR_EMBED_LEN
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_EMBEDDABLE_P-define" class=""><small>#define</small> RSTR_EMBEDDABLE_P
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_PTR-define" class=""><small>#define</small> RSTR_PTR
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_LEN-define" class=""><small>#define</small> RSTR_LEN
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_CAPA-define" class=""><small>#define</small> RSTR_CAPA
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_SHARED_P-define" class=""><small>#define</small> RSTR_SHARED_P
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_SET_SHARED_FLAG-define" class=""><small>#define</small> RSTR_SET_SHARED_FLAG
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_UNSET_SHARED_FLAG-define" class=""><small>#define</small> RSTR_UNSET_SHARED_FLAG
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_FSHARED_P-define" class=""><small>#define</small> RSTR_FSHARED_P
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_SET_FSHARED_FLAG-define" class=""><small>#define</small> RSTR_SET_FSHARED_FLAG
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_UNSET_FSHARED_FLAG-define" class=""><small>#define</small> RSTR_UNSET_FSHARED_FLAG
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_NOFREE_P-define" class=""><small>#define</small> RSTR_NOFREE_P
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_SET_NOFREE_FLAG-define" class=""><small>#define</small> RSTR_SET_NOFREE_FLAG
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_UNSET_NOFREE_FLAG-define" class=""><small>#define</small> RSTR_UNSET_NOFREE_FLAG
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_ASCII_P-define" class=""><small>#define</small> RSTR_ASCII_P
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_SET_ASCII_FLAG-define" class=""><small>#define</small> RSTR_SET_ASCII_FLAG
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_UNSET_ASCII_FLAG-define" class=""><small>#define</small> RSTR_UNSET_ASCII_FLAG
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_WRITE_ASCII_FLAG-define" class=""><small>#define</small> RSTR_WRITE_ASCII_FLAG
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_COPY_ASCII_FLAG-define" class=""><small>#define</small> RSTR_COPY_ASCII_FLAG
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_POOL_P-define" class=""><small>#define</small> RSTR_POOL_P
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTR_SET_POOL_FLAG-define" class=""><small>#define</small> RSTR_SET_POOL_FLAG
</dt>
<dd><pre class="code"></pre></dd>
<dt id="mrb_str_ptr-define" class=""><small>#define</small> mrb_str_ptr
<div class="docstring">
<div class="discussion">
<p>Returns a pointer from a Ruby string</p>
</div>
</div>
<div class="tags">
</div>
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTRING-define" class=""><small>#define</small> RSTRING
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTRING_PTR-define" class=""><small>#define</small> RSTRING_PTR
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTRING_EMBED_LEN-define" class=""><small>#define</small> RSTRING_EMBED_LEN
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTRING_LEN-define" class=""><small>#define</small> RSTRING_LEN
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTRING_CAPA-define" class=""><small>#define</small> RSTRING_CAPA
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTRING_END-define" class=""><small>#define</small> RSTRING_END
</dt>
<dd><pre class="code"></pre></dd>
<dt id="RSTRING_CSTR-define" class=""><small>#define</small> RSTRING_CSTR
</dt>
<dd><pre class="code"></pre></dd>
<dt id="MRB_STR_SHARED-define" class=""><small>#define</small> MRB_STR_SHARED
</dt>
<dd><pre class="code"></pre></dd>
<dt id="MRB_STR_FSHARED-define" class=""><small>#define</small> MRB_STR_FSHARED
</dt>
<dd><pre class="code"></pre></dd>
<dt id="MRB_STR_NOFREE-define" class=""><small>#define</small> MRB_STR_NOFREE
</dt>
<dd><pre class="code"></pre></dd>
<dt id="MRB_STR_EMBED-define" class=""><small>#define</small> MRB_STR_EMBED
</dt>
<dd><pre class="code"></pre></dd>
<dt id="MRB_STR_POOL-define" class=""><small>#define</small> MRB_STR_POOL
</dt>
<dd><pre class="code"></pre></dd>
<dt id="MRB_STR_ASCII-define" class=""><small>#define</small> MRB_STR_ASCII
</dt>
<dd><pre class="code"></pre></dd>
<dt id="MRB_STR_EMBED_LEN_SHIFT-define" class=""><small>#define</small> MRB_STR_EMBED_LEN_SHIFT
</dt>
<dd><pre class="code"></pre></dd>
<dt id="MRB_STR_EMBED_LEN_BITSIZE-define" class=""><small>#define</small> MRB_STR_EMBED_LEN_BITSIZE
</dt>
<dd><pre class="code"></pre></dd>
<dt id="MRB_STR_EMBED_LEN_MASK-define" class=""><small>#define</small> MRB_STR_EMBED_LEN_MASK
</dt>
<dd><pre class="code"></pre></dd>
<dt id="MRB_STR_TYPE_MASK-define" class=""><small>#define</small> MRB_STR_TYPE_MASK
</dt>
<dd><pre class="code"></pre></dd>
<dt id="mrb_str_index_lit-define" class=""><small>#define</small> mrb_str_index_lit
</dt>
<dd><pre class="code"></pre></dd>
<dt id="mrb_str_cat_lit-define" class=""><small>#define</small> mrb_str_cat_lit
</dt>
<dd><pre class="code"></pre></dd>
<dt id="mrb_str_cat2-define" class=""><small>#define</small> mrb_str_cat2
<div class="docstring">
<div class="discussion">
<p>For backward compatibility</p>
</div>
</div>
<div class="tags">
</div>
</dt>
<dd><pre class="code"></pre></dd>
<dt id="mrb_str_buf_cat-define" class=""><small>#define</small> mrb_str_buf_cat
</dt>
<dd><pre class="code"></pre></dd>
<dt id="mrb_str_buf_append-define" class=""><small>#define</small> mrb_str_buf_append
</dt>
<dd><pre class="code"></pre></dd>
</dl>
<div id="functions_details" class="method_details_list">
<h2>Function Details</h2>
<div class="method_details first">
<h3 class="signature first" id="mrb_str_strlen-function">
mrb_int <strong>mrb_str_strlen</strong>(mrb_state* , struct RString* )
</h3>
</div>
<div class="method_details ">
<h3 class="signature " id="mrb_str_modify-function">
void <strong>mrb_str_modify</strong>(mrb_state * mrb, struct RString * s)
</h3>
</div>
<div class="method_details ">
<h3 class="signature " id="mrb_str_modify_keep_ascii-function">
void <strong>mrb_str_modify_keep_ascii</strong>(mrb_state * mrb, struct RString * s)
</h3>
<div class="docstring">
<div class="discussion">
<p>mrb_str_modify() with keeping ASCII flag if set</p>
</div>
</div>
<div class="tags">
</div>
</div>
<div class="method_details ">
<h3 class="signature " id="mrb_str_index-function">
mrb_int <strong>mrb_str_index</strong>(mrb_state * mrb, mrb_value str, const char * p, mrb_int len, mrb_int offset)
</h3>
<div class="docstring">
<div class="discussion">
<p>Finds the index of a substring in a string</p>
</div>
</div>
<div class="tags">
</div>
</div>
<div class="method_details ">