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      <h2><a href="./">Go by Example မြန်မာဘာသာ</a>: Directories</h2>
      
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          <td class="docs">
            <p>Go သည် ဖိုင်စနစ်အတွင်းရှိ <em>directories</em> များနှင့် အလုပ်လုပ်ရန်
အသုံးဝင်သော function များစွာ ရှိသည်။</p>

          </td>
          <td class="code leading">
            <a href="https://go.dev/play/p/6ojWvtSXD-8"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
          <pre class="chroma">
<span class="kn">package</span> <span class="nx">main</span>
</pre>
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          <td class="docs">
            
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          <td class="code leading">
            
          <pre class="chroma"><span class="kn">import</span> <span class="p">(</span>
    <span class="s">&#34;fmt&#34;</span>
    <span class="s">&#34;os&#34;</span>
    <span class="s">&#34;path/filepath&#34;</span>
<span class="p">)</span>
</pre>
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          <td class="docs">
            
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          <td class="code leading">
            
          <pre class="chroma"><span class="kd">func</span> <span class="nf">check</span><span class="p">(</span><span class="nx">e</span> <span class="kt">error</span><span class="p">)</span> <span class="p">{</span>
    <span class="k">if</span> <span class="nx">e</span> <span class="o">!=</span> <span class="kc">nil</span> <span class="p">{</span>
        <span class="nb">panic</span><span class="p">(</span><span class="nx">e</span><span class="p">)</span>
    <span class="p">}</span>
<span class="p">}</span>
</pre>
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          <td class="docs">
            
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          <td class="code leading">
            
          <pre class="chroma"><span class="kd">func</span> <span class="nf">main</span><span class="p">()</span> <span class="p">{</span>
</pre>
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          <td class="docs">
            <p>လက်ရှိ အလုပ်လုပ်နေသော directory အတွင်း
sub-directory အသစ်တစ်ခု ဖန်တီးပါ။</p>

          </td>
          <td class="code leading">
            
          <pre class="chroma">
    <span class="nx">err</span> <span class="o">:=</span> <span class="nx">os</span><span class="p">.</span><span class="nf">Mkdir</span><span class="p">(</span><span class="s">&#34;subdir&#34;</span><span class="p">,</span> <span class="mo">0755</span><span class="p">)</span>
    <span class="nf">check</span><span class="p">(</span><span class="nx">err</span><span class="p">)</span>
</pre>
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          <td class="docs">
            <p>ယာယီ directories များ ဖန်တီးသောအခါ၊ ၎င်းတို့ကို ဖယ်ရှားရန်
<code>defer</code> သုံးခြင်းသည် ကောင်းမွန်သော အလေ့အထဖြစ်သည်။ <code>os.RemoveAll</code>
သည် directory tree တစ်ခုလုံးကို ဖျက်ပစ်လိမ့်မည် (<code>rm -rf</code> နှင့် အလားတူ)။</p>

          </td>
          <td class="code leading">
            
          <pre class="chroma">
    <span class="k">defer</span> <span class="nx">os</span><span class="p">.</span><span class="nf">RemoveAll</span><span class="p">(</span><span class="s">&#34;subdir&#34;</span><span class="p">)</span>
</pre>
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          <td class="docs">
            <p>ဖိုင်အလွတ်အသစ်တစ်ခု ဖန်တီးရန် Helper function။</p>

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          <td class="code leading">
            
          <pre class="chroma">
    <span class="nx">createEmptyFile</span> <span class="o">:=</span> <span class="kd">func</span><span class="p">(</span><span class="nx">name</span> <span class="kt">string</span><span class="p">)</span> <span class="p">{</span>
        <span class="nx">d</span> <span class="o">:=</span> <span class="p">[]</span><span class="nb">byte</span><span class="p">(</span><span class="s">&#34;&#34;</span><span class="p">)</span>
        <span class="nf">check</span><span class="p">(</span><span class="nx">os</span><span class="p">.</span><span class="nf">WriteFile</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">d</span><span class="p">,</span> <span class="mo">0644</span><span class="p">))</span>
    <span class="p">}</span>
</pre>
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          <td class="docs">
            
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          <td class="code leading">
            
          <pre class="chroma">    <span class="nf">createEmptyFile</span><span class="p">(</span><span class="s">&#34;subdir/file1&#34;</span><span class="p">)</span>
</pre>
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          <td class="docs">
            <p>ကျွန်ုပ်တို့သည် parents ပါဝင်သော directory အဆင့်ဆင့်ကို <code>MkdirAll</code> ဖြင့်
ဖန်တီးနိုင်သည်။ ဤသည်မှာ command-line <code>mkdir -p</code> နှင့် ဆင်တူသည်။</p>

          </td>
          <td class="code leading">
            
          <pre class="chroma">
    <span class="nx">err</span> <span class="p">=</span> <span class="nx">os</span><span class="p">.</span><span class="nf">MkdirAll</span><span class="p">(</span><span class="s">&#34;subdir/parent/child&#34;</span><span class="p">,</span> <span class="mo">0755</span><span class="p">)</span>
    <span class="nf">check</span><span class="p">(</span><span class="nx">err</span><span class="p">)</span>
</pre>
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          <td class="code leading">
            
          <pre class="chroma">    <span class="nf">createEmptyFile</span><span class="p">(</span><span class="s">&#34;subdir/parent/file2&#34;</span><span class="p">)</span>
    <span class="nf">createEmptyFile</span><span class="p">(</span><span class="s">&#34;subdir/parent/file3&#34;</span><span class="p">)</span>
    <span class="nf">createEmptyFile</span><span class="p">(</span><span class="s">&#34;subdir/parent/child/file4&#34;</span><span class="p">)</span>
</pre>
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          <td class="docs">
            <p><code>ReadDir</code> သည် directory အတွင်းရှိ အရာများကို စာရင်းပြုစုပြီး
<code>os.DirEntry</code> objects များ၏ slice ကို ပြန်ပေးသည်။</p>

          </td>
          <td class="code leading">
            
          <pre class="chroma">
    <span class="nx">c</span><span class="p">,</span> <span class="nx">err</span> <span class="o">:=</span> <span class="nx">os</span><span class="p">.</span><span class="nf">ReadDir</span><span class="p">(</span><span class="s">&#34;subdir/parent&#34;</span><span class="p">)</span>
    <span class="nf">check</span><span class="p">(</span><span class="nx">err</span><span class="p">)</span>
</pre>
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          <td class="docs">
            
          </td>
          <td class="code leading">
            
          <pre class="chroma">    <span class="nx">fmt</span><span class="p">.</span><span class="nf">Println</span><span class="p">(</span><span class="s">&#34;Listing subdir/parent&#34;</span><span class="p">)</span>
    <span class="k">for</span> <span class="nx">_</span><span class="p">,</span> <span class="nx">entry</span> <span class="o">:=</span> <span class="k">range</span> <span class="nx">c</span> <span class="p">{</span>
        <span class="nx">fmt</span><span class="p">.</span><span class="nf">Println</span><span class="p">(</span><span class="s">&#34; &#34;</span><span class="p">,</span> <span class="nx">entry</span><span class="p">.</span><span class="nf">Name</span><span class="p">(),</span> <span class="nx">entry</span><span class="p">.</span><span class="nf">IsDir</span><span class="p">())</span>
    <span class="p">}</span>
</pre>
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          <td class="docs">
            <p><code>Chdir</code> သည် လက်ရှိ လုပ်ငန်းလည်ပတ်နေသော directory ကို
ပြောင်းလဲခွင့်ပြုသည်၊ <code>cd</code> နှင့် အလားတူသည်။</p>

          </td>
          <td class="code leading">
            
          <pre class="chroma">
    <span class="nx">err</span> <span class="p">=</span> <span class="nx">os</span><span class="p">.</span><span class="nf">Chdir</span><span class="p">(</span><span class="s">&#34;subdir/parent/child&#34;</span><span class="p">)</span>
    <span class="nf">check</span><span class="p">(</span><span class="nx">err</span><span class="p">)</span>
</pre>
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          <td class="docs">
            <p>ယခု ကျွန်ုပ်တို့သည် <em>လက်ရှိ</em> directory ကို စာရင်းပြုစုသောအခါ
<code>subdir/parent/child</code> ၏ အကြောင်းအရာများကို မြင်ရမည်။</p>

          </td>
          <td class="code leading">
            
          <pre class="chroma">
    <span class="nx">c</span><span class="p">,</span> <span class="nx">err</span> <span class="p">=</span> <span class="nx">os</span><span class="p">.</span><span class="nf">ReadDir</span><span class="p">(</span><span class="s">&#34;.&#34;</span><span class="p">)</span>
    <span class="nf">check</span><span class="p">(</span><span class="nx">err</span><span class="p">)</span>
</pre>
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          <td class="docs">
            
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          <td class="code leading">
            
          <pre class="chroma">    <span class="nx">fmt</span><span class="p">.</span><span class="nf">Println</span><span class="p">(</span><span class="s">&#34;Listing subdir/parent/child&#34;</span><span class="p">)</span>
    <span class="k">for</span> <span class="nx">_</span><span class="p">,</span> <span class="nx">entry</span> <span class="o">:=</span> <span class="k">range</span> <span class="nx">c</span> <span class="p">{</span>
        <span class="nx">fmt</span><span class="p">.</span><span class="nf">Println</span><span class="p">(</span><span class="s">&#34; &#34;</span><span class="p">,</span> <span class="nx">entry</span><span class="p">.</span><span class="nf">Name</span><span class="p">(),</span> <span class="nx">entry</span><span class="p">.</span><span class="nf">IsDir</span><span class="p">())</span>
    <span class="p">}</span>
</pre>
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          <td class="docs">
            <p>စတင်ခဲ့သောနေရာသို့ <code>cd</code> ဖြင့် ပြန်သွားပါ။</p>

          </td>
          <td class="code leading">
            
          <pre class="chroma">
    <span class="nx">err</span> <span class="p">=</span> <span class="nx">os</span><span class="p">.</span><span class="nf">Chdir</span><span class="p">(</span><span class="s">&#34;../../..&#34;</span><span class="p">)</span>
    <span class="nf">check</span><span class="p">(</span><span class="nx">err</span><span class="p">)</span>
</pre>
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          <td class="docs">
            <p>ကျွန်ုပ်တို့သည် directory တစ်ခုကို <em>recursively</em> လည်း
ကြည့်ရှု(visit_နိုင်သည်၊ ၎င်း၏ sub-directories အားလုံးအပါအဝင်ဖြစ်သည်။
<code>Walk</code> သည် တွေ့ရှိသော ဖိုင် သို့မဟုတ် directory တိုင်းကို
ကိုင်တွယ်ရန် callback function တစ်ခုကို လက်ခံသည်။</p>

          </td>
          <td class="code leading">
            
          <pre class="chroma">
    <span class="nx">fmt</span><span class="p">.</span><span class="nf">Println</span><span class="p">(</span><span class="s">&#34;Visiting subdir&#34;</span><span class="p">)</span>
    <span class="nx">err</span> <span class="p">=</span> <span class="nx">filepath</span><span class="p">.</span><span class="nf">Walk</span><span class="p">(</span><span class="s">&#34;subdir&#34;</span><span class="p">,</span> <span class="nx">visit</span><span class="p">)</span>
<span class="p">}</span>
</pre>
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          <td class="docs">
            <p><code>visit</code> သည် <code>filepath.Walk</code> မှ recursively တွေ့ရှိသော
ဖိုင် သို့မဟုတ် directory တိုင်းအတွက် ခေါ်ဆိုခြင်းခံရသည်။</p>

          </td>
          <td class="code">
            
          <pre class="chroma">
<span class="kd">func</span> <span class="nf">visit</span><span class="p">(</span><span class="nx">p</span> <span class="kt">string</span><span class="p">,</span> <span class="nx">info</span> <span class="nx">os</span><span class="p">.</span><span class="nx">FileInfo</span><span class="p">,</span> <span class="nx">err</span> <span class="kt">error</span><span class="p">)</span> <span class="kt">error</span> <span class="p">{</span>
    <span class="k">if</span> <span class="nx">err</span> <span class="o">!=</span> <span class="kc">nil</span> <span class="p">{</span>
        <span class="k">return</span> <span class="nx">err</span>
    <span class="p">}</span>
    <span class="nx">fmt</span><span class="p">.</span><span class="nf">Println</span><span class="p">(</span><span class="s">&#34; &#34;</span><span class="p">,</span> <span class="nx">p</span><span class="p">,</span> <span class="nx">info</span><span class="p">.</span><span class="nf">IsDir</span><span class="p">())</span>
    <span class="k">return</span> <span class="kc">nil</span>
<span class="p">}</span>
</pre>
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          <td class="code">
            
          <pre class="chroma"><span class="gp">$</span> go run directories.go
<span class="go">Listing subdir/parent
</span><span class="go">  child true
</span><span class="go">  file2 false
</span><span class="go">  file3 false
</span><span class="go">Listing subdir/parent/child
</span><span class="go">  file4 false
</span><span class="go">Visiting subdir
</span><span class="go">  subdir true
</span><span class="go">  subdir/file1 false
</span><span class="go">  subdir/parent true
</span><span class="go">  subdir/parent/child true
</span><span class="go">  subdir/parent/child/file4 false
</span><span class="go">  subdir/parent/file2 false
</span><span class="go">  subdir/parent/file3 false</span></pre>
          </td>
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      </table>
      
      
      <p class="next">
        နောက်ဥပမာ: <a href="temporary-files-and-directories">Temporary Files and Directories</a>.
      </p>
      

    <p class="footer">
      by <a href="https://markmcgranaghan.com">Mark McGranaghan</a> နှင့် <a href="https://eli.thegreenplace.net">Eli Bendersky</a> | <a href="https://github.com/mmcgrana/gobyexample">source</a> | <a href="https://github.com/mmcgrana/gobyexample#license">license</a>
    </p>

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