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ZealOS/docs/Demo/Disk/DataBase.CC.html
TomAwezome dbf8647d59 Fixed non-writable drive throw on F5 and Ctrl-S. 
Added top & right borders to RawDr.
Improved spacing in some debug and compiler reporting.
Fixed RawPutChar and EdLite tab width.
Fixed Ui missing '0x' prefix syntax highlighter bug.
Added 32BitPaint demo.
2021-07-14 18:38:02 -04:00

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<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=US-ASCII">
<meta name="generator" content="ZealOS V0.08">
<style type="text/css">
body {background-color:#000000;}
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<body>
<pre style="font-family:monospace;font-size:12pt">
<a name="l1"></a><span class=cF0>#</span><span class=cF1>define</span><span class=cF0> DB_FILENAME </span><span class=cF6>&quot;~/DataBaseDemo.BIN&quot;</span><span class=cF0>
<a name="l2"></a>#</span><span class=cF1>define</span><span class=cF0> DB_ACCT_MAX </span><span class=cFE>100</span><span class=cF0>
<a name="l3"></a>#</span><span class=cF1>define</span><span class=cF0> DB_ACCT_BLKS </span><span class=cFE>1</span><span class=cF0>
<a name="l4"></a>
<a name="l5"></a></span><span class=cF1>class</span><span class=cF0> Acct
<a name="l6"></a>{</span><span class=cF2>//Use &lt;CTRL-l&gt; to help generate formats.</span><span class=cF0>
<a name="l7"></a> </span><span class=cF1>U8</span><span class=cF0> name[</span><span class=cFE>32</span><span class=cF0>] format </span><span class=cF6>&quot;$DA-P,LEN=32,A=\&quot;Name:%s\&quot;$\n&quot;</span><span class=cF0>;
<a name="l8"></a> </span><span class=cF1>U8</span><span class=cF0> addr[</span><span class=cFE>64</span><span class=cF0>] format </span><span class=cF6>&quot;$DA-P,LEN=64,A=\&quot;Addr:%s\&quot;$\n&quot;</span><span class=cF0>;
<a name="l9"></a> </span><span class=cF1>U8</span><span class=cF0> pad[DB_ACCT_BLKS * </span><span class=cF3>BLK_SIZE</span><span class=cF0> - </span><span class=cFE>64</span><span class=cF0> - </span><span class=cFE>32</span><span class=cF0>];
<a name="l10"></a>};
<a name="l11"></a>
<a name="l12"></a></span><span class=cF1>U0</span><span class=cF0> InitDatabase()
<a name="l13"></a>{ </span><span class=cF2>//Write new contiguous file</span><span class=cF0>
<a name="l14"></a> </span><span class=cF9>CFile</span><span class=cF0> *f = </span><span class=cF5>FOpen</span><span class=cF0>(DB_FILENAME, </span><span class=cF6>&quot;w&quot;</span><span class=cF0>, DB_ACCT_MAX * DB_ACCT_BLKS);
<a name="l15"></a>
<a name="l16"></a> </span><span class=cF5>FClose</span><span class=cF0>(f);
<a name="l17"></a>}
<a name="l18"></a>
<a name="l19"></a></span><span class=cF1>U0</span><span class=cF0> WriteAcct()
<a name="l20"></a>{
<a name="l21"></a> </span><span class=cF9>CFile</span><span class=cF0> *f;
<a name="l22"></a> Acct a;
<a name="l23"></a> </span><span class=cF9>I64</span><span class=cF0> acctnum;
<a name="l24"></a>
<a name="l25"></a> acctnum = </span><span class=cF5>I64Get</span><span class=cF0>(</span><span class=cF6>&quot;Acct #&quot;</span><span class=cF0>, -</span><span class=cFE>1</span><span class=cF0>);
<a name="l26"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cFE>0</span><span class=cF0> &lt;= acctnum &lt; DB_ACCT_MAX)
<a name="l27"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l28"></a> </span><span class=cF5>MemSet</span><span class=cF0>(&amp;a, </span><span class=cFE>0</span><span class=cF0>, </span><span class=cF3>BLK_SIZE</span><span class=cF0>);
<a name="l29"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cF5>DocForm</span><span class=cF7>(</span><span class=cF0>&amp;a</span><span class=cF7>)</span><span class=cF0>)
<a name="l30"></a> {
<a name="l31"></a> f = </span><span class=cF5>FOpen</span><span class=cF0>(DB_FILENAME, </span><span class=cF6>&quot;w+&quot;</span><span class=cF0>);
<a name="l32"></a> </span><span class=cF5>FBlkWrite</span><span class=cF0>(f, &amp;a, acctnum * DB_ACCT_BLKS, DB_ACCT_BLKS);
<a name="l33"></a> </span><span class=cF5>FClose</span><span class=cF0>(f);
<a name="l34"></a> }
<a name="l35"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l36"></a>}
<a name="l37"></a>
<a name="l38"></a></span><span class=cF1>U0</span><span class=cF0> ReadAcct()
<a name="l39"></a>{
<a name="l40"></a> </span><span class=cF9>CFile</span><span class=cF0> *f;
<a name="l41"></a> Acct a;
<a name="l42"></a> </span><span class=cF9>I64</span><span class=cF0> acctnum;
<a name="l43"></a>
<a name="l44"></a> acctnum = </span><span class=cF5>I64Get</span><span class=cF0>(</span><span class=cF6>&quot;Acct #&quot;</span><span class=cF0>, -</span><span class=cFE>1</span><span class=cF0>);
<a name="l45"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cFE>0</span><span class=cF0> &lt;= acctnum &lt; DB_ACCT_MAX)
<a name="l46"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l47"></a> f = </span><span class=cF5>FOpen</span><span class=cF0>(DB_FILENAME, </span><span class=cF6>&quot;r&quot;</span><span class=cF0>);
<a name="l48"></a> </span><span class=cF5>FBlkRead</span><span class=cF0>(f, &amp;a, acctnum * DB_ACCT_BLKS, DB_ACCT_BLKS);
<a name="l49"></a> </span><span class=cF5>FClose</span><span class=cF0>(f);
<a name="l50"></a> </span><span class=cF5>ClassRep</span><span class=cF0>(&amp;a);
<a name="l51"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l52"></a>}
<a name="l53"></a>
<a name="l54"></a></span><span class=cF1>U0</span><span class=cF0> DatabaseDemo()
<a name="l55"></a>{
<a name="l56"></a> </span><span class=cF9>I64</span><span class=cF0> ch;
<a name="l57"></a>
<a name="l58"></a> </span><span class=cF1>if</span><span class=cF0> (!</span><span class=cF5>FileFind</span><span class=cF7>(</span><span class=cF0>DB_FILENAME</span><span class=cF7>)</span><span class=cF0>)
<a name="l59"></a> InitDatabase;
<a name="l60"></a> </span><span class=cF1>do</span><span class=cF0>
<a name="l61"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l62"></a> </span><span class=cF6>&quot;$GREEN$R$FG$ead acct, $GREEN$W$FG$rite acct or $GREEN$&lt;SHIFT-ESC&gt;$FG$:&quot;</span><span class=cF0>;
<a name="l63"></a> ch = </span><span class=cF5>ToUpper</span><span class=cF0>(</span><span class=cF5>CharGet</span><span class=cF0>);
<a name="l64"></a> </span><span class=cF6>'\n'</span><span class=cF0>;
<a name="l65"></a> </span><span class=cF1>if</span><span class=cF0> (ch == </span><span class=cF6>'R'</span><span class=cF0>) ReadAcct;
<a name="l66"></a> </span><span class=cF1>if</span><span class=cF0> (ch == </span><span class=cF6>'W'</span><span class=cF0>) WriteAcct;
<a name="l67"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l68"></a> </span><span class=cF1>while</span><span class=cF0> (ch != </span><span class=cF3>CH_SHIFT_ESC</span><span class=cF0> &amp;&amp; ch != </span><span class=cF3>CH_ESC</span><span class=cF0>);
<a name="l69"></a>}
<a name="l70"></a>
<a name="l71"></a>DatabaseDemo;
</span></pre></body>
</html>
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