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POReading lines and columns with different separators from a text file
 

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  1. POReading lines and columns with different separators from a text file
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    <p>I am trying to write a function that reads in individual lines from a text file. Each line has two or three columns. I am want to know most elegant/clean approach for it. I am need the function to work with different separators <code>(\t,\n,' ',',',';')</code>.</p> <p>My approach works correctly except for different separators.</p> <p>E.g. Input:</p> <pre><code>6 0 0 1 1 2 2 3 3 4 4 5 5 10 0 1 0.47 2 0 0.67 3 0 0.98 4 0 0.12 2 1 0.94 3 1 0.05 4 1 0.22 3 2 0.24 4 2 0.36 4 3 0.69 </code></pre> <p>Pattern Input:</p> <pre><code>[total number of vertices] [id-vertex][\separetor][name-vertex] ... [total number of edges] [id-vertex][\separator][id-neighbor][\separetor][weight] ... *\separetor=\t|\n|' '|','|';' </code></pre> <p>My approach:</p> <pre><code>void readStream(istream&amp; is, const char separator) { uint n, m; is &gt;&gt; n; cout &lt;&lt; n &lt;&lt; endl; string name; uint vertexId, neighborId; float weight; while(!is.eof()) { for(uint i = 0; i &lt; n; i++) { is &gt;&gt; vertexId &gt;&gt; name; cout &lt;&lt; vertexId; cout &lt;&lt; " " &lt;&lt; name &lt;&lt; endl; } is &gt;&gt; m; cout &lt;&lt; m &lt;&lt; endl; for(uint j = 0; j &lt; n; j++) { is &gt;&gt; vertexId &gt;&gt; neighborId &gt;&gt; weight; cout &lt;&lt; vertexId; cout &lt;&lt; " " &lt;&lt; neighborId; cout &lt;&lt; " " &lt;&lt; weight &lt;&lt; endl; } break; } } </code></pre> <p>Overview:</p> <ol> <li><p>Problem: Different separators.</p></li> <li><p>Others elegantes solutions: In general, someone have other elegant/clean solutions to the problem?</p></li> </ol>
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    1. USAlan Valejo
    1. USAlan Valejo
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    1. COI do not see the separator character being used in your function at all
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      1. POReading lines and columns with different separators from a text file
      1. USSaksham
    2. COI don't know how to include the separator in my code.
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      1. POReading lines and columns with different separators from a text file
      1. USAlan Valejo
    3. COYou can use `std::strpbrk()` function on defined byte string with separators.
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      1. POReading lines and columns with different separators from a text file
      1. USQiu
 

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