jburkardt-f77/file_name_sequence/file_name_sequence.html at master · Code-Sample-Collection/jburkardt-f77 · GitHub

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<html>

  <head>
    <title>
      FILE_NAME_SEQUENCE - Create an Increasing Sequence of Filenames
    </title>
  </head>

  <body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">

    <h1 align = "center">
      FILE_NAME_SEQUENCE <br> Create an Increasing Sequence of Filenames
    </h1>

    <hr>

    <p>
      <b>FILE_NAME_SEQUENCE</b>
      is a FORTRAN77 program which
      demonstrates ways of generating a sequence of file names
      with an embedded index that increases.
    </p>

    <p>
      There are situations such as animations or parallel processing in which
      it is necessary to generate a sequence of file names which include
      an embedded index that increases.  A simple example might be
      <pre>
        'fred0.txt', 'fred1.txt', 'fred2.txt'
      </pre>
      A side issue arises when the number of files is large enough that the
      number of digits in the index will vary.  Thus, if we are going to have
      15 files, do we want to number them as
      <pre>
        'fred00.txt' through 'fred14.txt'
      </pre>
      which means, for one thing, that they will alphabetize properly, or
      will we be satisfied with
      <pre>
        'fred0.txt' through 'fred14.txt' ?
      </pre>
    </p>

    <h3 align = "center">
      Licensing:
    </h3>

    <p>
      The computer code and data files described and made available on this web page
      are distributed under
      <a href = "../../txt/gnu_lgpl.txt">the GNU LGPL license.</a>
    </p>

    <h3 align = "center">
      Languages:
    </h3>

    <p>
      <b>FILE_NAME_SEQUENCE</b> is availabe in
      <a href = "../../c_src/file_name_sequence/file_name_sequence.html">a C version</a> and
      <a href = "../../cpp_src/file_name_sequence/file_name_sequence.html">a C++ version</a> and
      <a href = "../../f77_src/file_name_sequence/file_name_sequence.html">a FORTRAN77 version</a> and
      <a href = "../../f_src/file_name_sequence/file_name_sequence.html">a FORTRAN90 version</a> and
      <a href = "../../m_src/file_name_sequence/file_name_sequence.html">a MATLAB version</a>.
    </p>

    <h3 align = "center">
      Related Data and Programs:
    </h3>

    <p>
      <a href = "../../f77_src/filum/filum.html">
      FILUM</a>,
      a FORTRAN77 library which
      can work with information in text files.
    </p>

    <h3 align = "center">
      Source Code:
    </h3>

    <p>
      <ul>
        <li>
          <a href = "file_name_sequence.f">file_name_sequence.f</a>, the source code.
        </li>
        <li>
          <a href = "file_name_sequence.sh">file_name_sequence.sh</a>,
          BASH commands to compile the source code.
        </li>
      </ul>
    </p>

    <h3 align = "center">
      Examples and Tests:
    </h3>

    <p>
      <ul>
        <li>
          <a href = "file_name_sequence_prb.f">file_name_sequence_prb.f</a>,
          a sample calling program.
        </li>
        <li>
          <a href = "file_name_sequence_prb.sh">file_name_sequence_prb.sh</a>,
          BASH commands to compile and run the sample program.
        </li>
        <li>
          <a href = "file_name_sequence_prb_output.txt">file_name_sequence_prb_output.txt</a>,
          the output file.
        </li>
      </ul>
    </p>

    <h3 align = "center">
      List of Routines:
    </h3>

    <p>
      <ul>
        <li>
          <b>CH_IS_DIGIT</b> returns TRUE if a character is a decimal digit.
        </li>
        <li>
          <b>CH_TO_DIGIT</b> returns the integer value of a base 10 digit.
        </li>
        <li>
          <b>DIGIT_INC</b> increments a decimal digit.
        </li>
        <li>
          <b>DIGIT_TO_CH</b> returns the character representation of a decimal digit.
        </li>
        <li>
          <b>FILE_NAME_INC</b> increments a partially numeric filename.
        </li>
        <li>
          <b>TIMESTAMP</b> prints out the current YMDHMS date as a timestamp.
        </li>
      </ul>
    </p>
    <p>
      You can go up one level to <a href = "../f77_src.html">
      the FORTRAN77 source codes</a>.
    </p>

    <hr>

    <i>
      Last revised on 24 July 2012.
    </i>

    <!-- John Burkardt -->

  </body>

</html>