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<tr><td class='sub'>Fork of Lua 5.1 to encourage end-user programming</td><td class='sub right'>Kartik K. Agaram <vc@akkartik.com></td></tr></table>
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</pre></td>
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.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */
.highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */
.highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */
.highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */
.highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */
.highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */
.highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */
.highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */
.highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */
.highlight .vc { color: #336699 } /* Name.Variable.Class */
.highlight .vg { color: #dd7700 } /* Name.Variable.Global */
.highlight .vi { color: #3333bb } /* Name.Variable.Instance */
.highlight .vm { color: #336699 } /* Name.Variable.Magic */
.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */</style><div class="highlight"><pre><span></span><span class="cm">/*</span>
<span class="cm"> * Curses binding for Lua 5.1, 5.2 & 5.3.</span>
<span class="cm"> *</span>
<span class="cm"> * (c) Gary V. Vaughan <gary@vaughan.pe> 2013-2017</span>
<span class="cm"> * (c) Reuben Thomas <rrt@sc3d.org> 2009-2012</span>
<span class="cm"> * (c) Tiago Dionizio <tiago.dionizio AT gmail.com> 2004-2007</span>
<span class="cm"> *</span>
<span class="cm"> * Permission is hereby granted, free of charge, to any person obtaining</span>
<span class="cm"> * a copy of this software and associated documentation files (the</span>
<span class="cm"> * "Software"), to deal in the Software without restriction, including</span>
<span class="cm"> * without limitation the rights to use, copy, modify, merge, publish,</span>
<span class="cm"> * distribute, sublicense, and/or sell copies of the Software, and to</span>
<span class="cm"> * permit persons to whom the Software is furnished to do so, subject to</span>
<span class="cm"> * the following conditions:</span>
<span class="cm"> *</span>
<span class="cm"> * The above copyright notice and this permission notice shall be</span>
<span class="cm"> * included in all copies or substantial portions of the Software.</span>
<span class="cm"> *</span>
<span class="cm"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,</span>
<span class="cm"> * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF</span>
<span class="cm"> * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.</span>
<span class="cm"> * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY</span>
<span class="cm"> * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,</span>
<span class="cm"> * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE</span>
<span class="cm"> * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.</span>
<span class="cm"> */</span>
<span class="cm">/***</span>
<span class="cm">Curses attributed string buffers.</span>
<span class="cm">An array of characters, plus associated curses attributes and</span>
<span class="cm">colors at each position.</span>
<span class="cm">Although marginally useful alone, the constants used to set colors</span>
<span class="cm">and attributes in `chstr` buffers are not defined until **after**</span>
<span class="cm">`curses.initscr ()` has been called.</span>
<span class="cm">@classmod curses.chstr</span>
<span class="cm">*/</span>
<span class="cp">#ifndef LCURSES_CHSTR_C</span>
<span class="cp">#define LCURSES_CHSTR_C 1</span>
<span class="cp">#include</span><span class="w"> </span><span class="cpf">"_helpers.c"</span>
<span class="k">static</span><span class="w"> </span><span class="k">const</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="o">*</span><span class="n">CHSTRMETA</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">"curses:chstr"</span><span class="p">;</span>
<span class="k">typedef</span><span class="w"> </span><span class="k">struct</span>
<span class="p">{</span>
<span class="w"> </span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">len</span><span class="p">;</span>
<span class="w"> </span><span class="n">chtype</span><span class="w"> </span><span class="n">str</span><span class="p">[</span><span class="mi">1</span><span class="p">];</span>
<span class="p">}</span><span class="w"> </span><span class="n">chstr</span><span class="p">;</span>
<span class="cp">#define CHSTR_SIZE(len) (sizeof(chstr) + len * sizeof(chtype))</span>
<span class="cm">/* create new chstr object and leave it in the lua stack */</span>
<span class="k">static</span><span class="w"> </span><span class="n">chstr</span><span class="w"> </span><span class="o">*</span>
<span class="nf">chstr_new</span><span class="p">(</span><span class="n">lua_State</span><span class="w"> </span><span class="o">*</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">len</span><span class="p">)</span>
<span class="p">{</span>
<span class="w"> </span><span class="n">chstr</span><span class="w"> </span><span class="o">*</span><span class="n">cs</span><span class="p">;</span>
<span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">len</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span>
<span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">luaL_error</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="s">"invalid chstr length"</span><span class="p">),</span><span class="w"> </span><span class="nb">NULL</span><span class="p">;</span>
<span class="w"> </span><span class="n">cs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lua_newuserdata</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="n">CHSTR_SIZE</span><span class="p">(</span><span class="n">len</span><span class="p">));</span>
<span class="w"> </span><span class="n">luaL_getmetatable</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="n">CHSTRMETA</span><span class="p">);</span>
<span class="w"> </span><span class="n">lua_setmetatable</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">-2</span><span class="p">);</span>
<span class="w"> </span><span class="n">cs</span><span class="o">-></span><span class="n">len</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">len</span><span class="p">;</span>
<span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">cs</span><span class="p">;</span>
<span class="p">}</span>
<span class="cm">/* get chstr from lua (convert if needed) */</span>
<span class="k">static</span><span class="w"> </span><span class="n">chstr</span><span class="w"> </span><span class="o">*</span>
<span class="nf">checkchstr</span><span class="p">(</span><span class="n">lua_State</span><span class="w"> </span><span class="o">*</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">narg</span><span class="p">)</span>
<span class="p">{</span>
<span class="w"> </span><span class="n">chstr</span><span class="w"> </span><span class="o">*</span><span class="n">cs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="n">chstr</span><span class="o">*</span><span class="p">)</span><span class="n">luaL_checkudata</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="n">narg</span><span class="p">,</span><span class="w"> </span><span class="n">CHSTRMETA</span><span class="p">);</span>
<span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">cs</span><span class="p">)</span>
<span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">cs</span><span class="p">;</span>
<span class="w"> </span><span class="n">luaL_argerror</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="n">narg</span><span class="p">,</span><span class="w"> </span><span class="s">"bad curses chstr"</span><span class="p">);</span>
<span class="w"> </span><span class="cm">/*NOTREACHED*/</span>
<span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="nb">NULL</span><span class="p">;</span>
<span class="p">}</span>
<span class="cm">/***</span>
<span class="cm">Change the contents of the chstr.</span>
<span class="cm">@function set_str</span>
<span class="cm">@int o offset to start of change</span>
<span class="cm">@string s characters to insert into *cs* at *o*</span>
<span class="cm">@int[opt=A_NORMAL] attr attributes for changed elements</span>
<span class="cm">@int[opt=1] rep repeat count</span>
<span class="cm">@usage</span>
<span class="cm"> cs = curses.chstr (10)</span>
<span class="cm"> cs:set_str(0, "0123456789", curses.A_BOLD)</span>
<span class="cm">*/</span>
<span class="k">static</span><span class="w"> </span><span class="kt">int</span>
<span class="nf">Cset_str</span><span class="p">(</span><span class="n">lua_State</span><span class="w"> </span><span class="o">*</span><span class="n">L</span><span class="p">)</span>
<span class="p">{</span>
<span class="w"> </span><span class="n">chstr</span><span class="w"> </span><span class="o">*</span><span class="n">cs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">checkchstr</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">1</span><span class="p">);</span>
<span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">offset</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">checkint</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">2</span><span class="p">);</span>
<span class="w"> </span><span class="k">const</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="o">*</span><span class="n">str</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">luaL_checkstring</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">3</span><span class="p">);</span>
<span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">len</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lua_strlen</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">3</span><span class="p">);</span>
<span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">attr</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">optint</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">4</span><span class="p">,</span><span class="w"> </span><span class="n">A_NORMAL</span><span class="p">);</span>
<span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">rep</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">optint</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">5</span><span class="p">,</span><span class="w"> </span><span class="mi">1</span><span class="p">);</span>
<span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">i</span><span class="p">;</span>
<span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">offset</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="mi">0</span><span class="p">)</span>
<span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
<span class="w"> </span><span class="k">while</span><span class="w"> </span><span class="p">(</span><span class="n">rep</span><span class="o">--</span><span class="w"> </span><span class="o">></span><span class="w"> </span><span class="mi">0</span><span class="w"> </span><span class="o">&&</span><span class="w"> </span><span class="n">offset</span><span class="w"> </span><span class="o"><=</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="p">)</span><span class="n">cs</span><span class="o">-></span><span class="n">len</span><span class="p">)</span>
<span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">offset</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="n">len</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mi">1</span><span class="w"> </span><span class="o">></span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="p">)</span><span class="n">cs</span><span class="o">-></span><span class="n">len</span><span class="p">)</span>
<span class="w"> </span><span class="n">len</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">cs</span><span class="o">-></span><span class="n">len</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="n">offset</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="n">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">len</span><span class="p">;</span><span class="w"> </span><span class="o">++</span><span class="n">i</span><span class="p">)</span>
<span class="w"> </span><span class="n">cs</span><span class="o">-></span><span class="n">str</span><span class="p">[</span><span class="n">offset</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="n">i</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">str</span><span class="p">[</span><span class="n">i</span><span class="p">]</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">attr</span><span class="p">;</span>
<span class="w"> </span><span class="n">offset</span><span class="w"> </span><span class="o">+=</span><span class="w"> </span><span class="n">len</span><span class="p">;</span>
<span class="w"> </span><span class="p">}</span>
<span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
<span class="p">}</span>
<span class="cm">/***</span>
<span class="cm">Set a character in the buffer.</span>
<span class="cm">*ch* can be a one-character string, or an integer from `string.byte`</span>
<span class="cm">@function set_ch</span>
<span class="cm">@int o offset to start of change</span>
<span class="cm">@param int|string ch character to insert</span>
<span class="cm">@int[opt=A_NORMAL] attr attributes for changed elements</span>
<span class="cm">@int[opt=1] rep repeat count</span>
<span class="cm">@usage</span>
<span class="cm"> -- Write a bold 'A' followed by normal 'a' chars to a new buffer</span>
<span class="cm"> size = 10</span>
<span class="cm"> cs = curses.chstr (size)</span>
<span class="cm"> cs:set_ch(0, 'A', curses.A_BOLD)</span>
<span class="cm"> cs:set_ch(1, 'a', curses.A_NORMAL, size - 1)</span>
<span class="cm">*/</span>
<span class="k">static</span><span class="w"> </span><span class="kt">int</span>
<span class="nf">Cset_ch</span><span class="p">(</span><span class="n">lua_State</span><span class="w"> </span><span class="o">*</span><span class="n">L</span><span class="p">)</span>
<span class="p">{</span>
<span class="w"> </span><span class="n">chstr</span><span class="o">*</span><span class="w"> </span><span class="n">cs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">checkchstr</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">1</span><span class="p">);</span>
<span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">offset</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">checkint</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">2</span><span class="p">);</span>
<span class="w"> </span><span class="n">chtype</span><span class="w"> </span><span class="n">ch</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">checkch</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">3</span><span class="p">);</span>
<span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">attr</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">optint</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">4</span><span class="p">,</span><span class="w"> </span><span class="n">A_NORMAL</span><span class="p">);</span>
<span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">rep</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">optint</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">5</span><span class="p">,</span><span class="w"> </span><span class="mi">1</span><span class="p">);</span>
<span class="w"> </span><span class="k">while</span><span class="w"> </span><span class="p">(</span><span class="n">rep</span><span class="o">--</span><span class="w"> </span><span class="o">></span><span class="w"> </span><span class="mi">0</span><span class="p">)</span>
<span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">offset</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="mi">0</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="n">offset</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="p">)</span><span class="w"> </span><span class="n">cs</span><span class="o">-></span><span class="n">len</span><span class="p">)</span>
<span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
<span class="w"> </span><span class="n">cs</span><span class="o">-></span><span class="n">str</span><span class="p">[</span><span class="n">offset</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ch</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">attr</span><span class="p">;</span>
<span class="w"> </span><span class="o">++</span><span class="n">offset</span><span class="p">;</span>
<span class="w"> </span><span class="p">}</span>
<span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
<span class="p">}</span>
<span class="cm">/***</span>
<span class="cm">Get information from the chstr.</span>
<span class="cm">@function get</span>
<span class="cm">@int o offset from start of *cs*</span>
<span class="cm">@treturn int character at offset *o* in *cs*</span>
<span class="cm">@treturn int bitwise-OR of attributes at offset *o* in *cs*</span>
<span class="cm">@treturn int colorpair at offset *o* in *cs*</span>
<span class="cm">@usage</span>
<span class="cm"> cs = curses.chstr (10)</span>
<span class="cm"> cs:set_ch(0, 'A', curses.A_BOLD, 10)</span>
<span class="cm"> --> 65 2097152 0</span>
<span class="cm"> print (cs:get (9))</span>
<span class="cm">*/</span>
<span class="k">static</span><span class="w"> </span><span class="kt">int</span>
<span class="nf">Cget</span><span class="p">(</span><span class="n">lua_State</span><span class="w"> </span><span class="o">*</span><span class="n">L</span><span class="p">)</span>
<span class="p">{</span>
<span class="w"> </span><span class="n">chstr</span><span class="o">*</span><span class="w"> </span><span class="n">cs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">checkchstr</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">1</span><span class="p">);</span>
<span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">offset</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">checkint</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">2</span><span class="p">);</span>
<span class="w"> </span><span class="n">chtype</span><span class="w"> </span><span class="n">ch</span><span class="p">;</span>
<span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">offset</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="mi">0</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="n">offset</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="p">)</span><span class="w"> </span><span class="n">cs</span><span class="o">-></span><span class="n">len</span><span class="p">)</span>
<span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
<span class="w"> </span><span class="n">ch</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">cs</span><span class="o">-></span><span class="n">str</span><span class="p">[</span><span class="n">offset</span><span class="p">];</span>
<span class="w"> </span><span class="n">lua_pushinteger</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="n">ch</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="n">A_CHARTEXT</span><span class="p">);</span>
<span class="w"> </span><span class="n">lua_pushinteger</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="n">ch</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="n">A_ATTRIBUTES</span><span class="p">);</span>
<span class="w"> </span><span class="n">lua_pushinteger</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="n">ch</span><span class="w"> </span><span class="o">&</span><span class="w"> </span><span class="n">A_COLOR</span><span class="p">);</span>
<span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="mi">3</span><span class="p">;</span>
<span class="p">}</span>
<span class="cm">/***</span>
<span class="cm">Retrieve chstr length.</span>
<span class="cm">@function len</span>
<span class="cm">@tparam chstr cs buffer to act on</span>
<span class="cm">@treturn int length of *cs*</span>
<span class="cm">@usage</span>
<span class="cm"> cs = curses.chstr (123)</span>
<span class="cm"> --> 123</span>
<span class="cm"> print (cs:len ())</span>
<span class="cm">*/</span>
<span class="k">static</span><span class="w"> </span><span class="kt">int</span>
<span class="nf">Clen</span><span class="p">(</span><span class="n">lua_State</span><span class="w"> </span><span class="o">*</span><span class="n">L</span><span class="p">)</span>
<span class="p">{</span>
<span class="w"> </span><span class="n">chstr</span><span class="w"> </span><span class="o">*</span><span class="n">cs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">checkchstr</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">1</span><span class="p">);</span>
<span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">pushintresult</span><span class="p">(</span><span class="n">cs</span><span class="o">-></span><span class="n">len</span><span class="p">);</span>
<span class="p">}</span>
<span class="cm">/***</span>
<span class="cm">Duplicate chstr.</span>
<span class="cm">@function dup</span>
<span class="cm">@treturn chstr duplicate of *cs*</span>
<span class="cm">@usage</span>
<span class="cm"> dup = cs:dup ()</span>
<span class="cm">*/</span>
<span class="k">static</span><span class="w"> </span><span class="kt">int</span>
<span class="nf">Cdup</span><span class="p">(</span><span class="n">lua_State</span><span class="w"> </span><span class="o">*</span><span class="n">L</span><span class="p">)</span>
<span class="p">{</span>
<span class="w"> </span><span class="n">chstr</span><span class="w"> </span><span class="o">*</span><span class="n">cs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">checkchstr</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">1</span><span class="p">);</span>
<span class="w"> </span><span class="n">chstr</span><span class="w"> </span><span class="o">*</span><span class="n">ncs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">chstr_new</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="n">cs</span><span class="o">-></span><span class="n">len</span><span class="p">);</span>
<span class="w"> </span><span class="n">memcpy</span><span class="p">(</span><span class="n">ncs</span><span class="o">-></span><span class="n">str</span><span class="p">,</span><span class="w"> </span><span class="n">cs</span><span class="o">-></span><span class="n">str</span><span class="p">,</span><span class="w"> </span><span class="n">CHSTR_SIZE</span><span class="p">(</span><span class="n">cs</span><span class="o">-></span><span class="n">len</span><span class="p">));</span>
<span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
<span class="p">}</span>
<span class="cm">/***</span>
<span class="cm">Initialise a new chstr.</span>
<span class="cm">@function __call</span>
<span class="cm">@int len buffer length</span>
<span class="cm">@treturn chstr a new chstr filled with spaces</span>
<span class="cm">@usage</span>
<span class="cm"> cs = curses.chstr (10)</span>
<span class="cm">*/</span>
<span class="k">static</span><span class="w"> </span><span class="kt">int</span>
<span class="nf">C__call</span><span class="p">(</span><span class="n">lua_State</span><span class="w"> </span><span class="o">*</span><span class="n">L</span><span class="p">)</span>
<span class="p">{</span>
<span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">len</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">checkint</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">2</span><span class="p">);</span>
<span class="w"> </span><span class="n">chstr</span><span class="o">*</span><span class="w"> </span><span class="n">ncs</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">chstr_new</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="n">len</span><span class="p">);</span>
<span class="w"> </span><span class="n">memset</span><span class="p">(</span><span class="n">ncs</span><span class="o">-></span><span class="n">str</span><span class="p">,</span><span class="w"> </span><span class="sc">' '</span><span class="p">,</span><span class="w"> </span><span class="n">len</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="k">sizeof</span><span class="p">(</span><span class="n">chtype</span><span class="p">));</span>
<span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">static</span><span class="w"> </span><span class="k">const</span><span class="w"> </span><span class="n">luaL_Reg</span><span class="w"> </span><span class="n">curses_chstr_fns</span><span class="p">[]</span><span class="w"> </span><span class="o">=</span>
<span class="p">{</span>
<span class="w"> </span><span class="n">LCURSES_FUNC</span><span class="p">(</span><span class="w"> </span><span class="n">Clen</span><span class="w"> </span><span class="p">),</span>
<span class="w"> </span><span class="n">LCURSES_FUNC</span><span class="p">(</span><span class="w"> </span><span class="n">Cset_ch</span><span class="w"> </span><span class="p">),</span>
<span class="w"> </span><span class="n">LCURSES_FUNC</span><span class="p">(</span><span class="w"> </span><span class="n">Cset_str</span><span class="w"> </span><span class="p">),</span>
<span class="w"> </span><span class="n">LCURSES_FUNC</span><span class="p">(</span><span class="w"> </span><span class="n">Cget</span><span class="w"> </span><span class="p">),</span>
<span class="w"> </span><span class="n">LCURSES_FUNC</span><span class="p">(</span><span class="w"> </span><span class="n">Cdup</span><span class="w"> </span><span class="p">),</span>
<span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nb">NULL</span><span class="p">,</span><span class="w"> </span><span class="nb">NULL</span><span class="w"> </span><span class="p">}</span>
<span class="p">};</span>
<span class="n">LUALIB_API</span><span class="w"> </span><span class="kt">int</span>
<span class="n">luaopen_curses_chstr</span><span class="p">(</span><span class="n">lua_State</span><span class="w"> </span><span class="o">*</span><span class="n">L</span><span class="p">)</span>
<span class="p">{</span>
<span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">t</span><span class="p">,</span><span class="w"> </span><span class="n">mt</span><span class="p">;</span>
<span class="w"> </span><span class="n">luaL_register</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="s">"curses.chstr"</span><span class="p">,</span><span class="w"> </span><span class="n">curses_chstr_fns</span><span class="p">);</span>
<span class="w"> </span><span class="n">t</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lua_gettop</span><span class="p">(</span><span class="n">L</span><span class="p">);</span>
<span class="w"> </span><span class="n">lua_createtable</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="mi">1</span><span class="p">);</span><span class="w"> </span><span class="cm">/* u = {} */</span>
<span class="w"> </span><span class="n">lua_pushcfunction</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="n">C__call</span><span class="p">);</span>
<span class="w"> </span><span class="n">lua_setfield</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">-2</span><span class="p">,</span><span class="w"> </span><span class="s">"__call"</span><span class="p">);</span><span class="w"> </span><span class="cm">/* u.__call = C__call */</span>
<span class="w"> </span><span class="n">lua_setmetatable</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">-2</span><span class="p">);</span><span class="w"> </span><span class="cm">/* setmetatable (t, u) */</span>
<span class="w"> </span><span class="n">luaL_newmetatable</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="n">CHSTRMETA</span><span class="p">);</span>
<span class="w"> </span><span class="n">mt</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lua_gettop</span><span class="p">(</span><span class="n">L</span><span class="p">);</span>
<span class="w"> </span><span class="n">lua_pushvalue</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="n">mt</span><span class="p">);</span>
<span class="w"> </span><span class="n">lua_setfield</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">-2</span><span class="p">,</span><span class="w"> </span><span class="s">"__index"</span><span class="p">);</span><span class="w"> </span><span class="cm">/* mt.__index = mt */</span>
<span class="w"> </span><span class="n">lua_pushliteral</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="s">"CursesChstr"</span><span class="p">);</span>
<span class="w"> </span><span class="n">lua_setfield</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">-2</span><span class="p">,</span><span class="w"> </span><span class="s">"_type"</span><span class="p">);</span><span class="w"> </span><span class="cm">/* mt._type = "CursesChstr" */</span>
<span class="w"> </span><span class="cm">/* for k,v in pairs(t) do mt[k]=v end */</span>
<span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="n">lua_pushnil</span><span class="p">(</span><span class="n">L</span><span class="p">);</span><span class="w"> </span><span class="n">lua_next</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="n">t</span><span class="p">)</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="mi">0</span><span class="p">;)</span>
<span class="w"> </span><span class="n">lua_setfield</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="n">mt</span><span class="p">,</span><span class="w"> </span><span class="n">lua_tostring</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">-2</span><span class="p">));</span>
<span class="w"> </span><span class="n">lua_pop</span><span class="p">(</span><span class="n">L</span><span class="p">,</span><span class="w"> </span><span class="mi">1</span><span class="p">);</span><span class="w"> </span><span class="cm">/* pop mt */</span>
<span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
<span class="p">}</span>
<span class="cp">#endif </span><span class="cm">/*!LCURSES_CHSTR_C*/</span>
</pre></div>