File-Format-Errors.html 7.8 KB

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  13. <title>avram - a virtual machine code interpreter: 1.6.4 File Format Errors</title>
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  39. <a name="File-Format-Errors"></a>
  40. <table cellpadding="1" cellspacing="1" border="0">
  41. <tr><td valign="middle" align="left">[<a href="Overflow-Errors.html#Overflow-Errors" title="Previous section in reading order"> &lt; </a>]</td>
  42. <td valign="middle" align="left">[<a href="Application-Programming-Errors.html#Application-Programming-Errors" title="Next section in reading order"> &gt; </a>]</td>
  43. <td valign="middle" align="left"> &nbsp; </td>
  44. <td valign="middle" align="left">[<a href="User-Manual.html#User-Manual" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
  45. <td valign="middle" align="left">[<a href="Diagnostics.html#Diagnostics" title="Up section"> Up </a>]</td>
  46. <td valign="middle" align="left">[<a href="Virtual-Machine-Specification.html#Virtual-Machine-Specification" title="Next chapter"> &gt;&gt; </a>]</td>
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  49. <td valign="middle" align="left"> &nbsp; </td>
  50. <td valign="middle" align="left"> &nbsp; </td>
  51. <td valign="middle" align="left">[<a href="avram.html#Top" title="Cover (top) of document">Top</a>]</td>
  52. <td valign="middle" align="left">[<a href="avram_toc.html#SEC_Contents" title="Table of contents">Contents</a>]</td>
  53. <td valign="middle" align="left">[<a href="Function-Index.html#Function-Index" title="Index">Index</a>]</td>
  54. <td valign="middle" align="left">[<a href="avram_abt.html#SEC_About" title="About (help)"> ? </a>]</td>
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  56. <hr size="1">
  57. <a name="File-Format-Errors-1"></a>
  58. <h3 class="subsection">1.6.4 File Format Errors</h3>
  59. <p>Certain application crashes result from an application not adhering
  60. to the required conventions about data and file formats, or because the
  61. application was invoked in the wrong mode (<a href="Modes-of-Operation.html#Modes-of-Operation">Modes of Operation</a>). These
  62. are the following.
  63. </p>
  64. <dl compact="compact">
  65. <dt> <code><var>application-name</var>: invalid text format (code <var>nn</var>)</code></dt>
  66. <dd><a name="index-invalid-text-format"></a>
  67. <p>An application that was expected to return a string of characters to
  68. be written to a text file returned data that did not correspond to any
  69. valid character representation.
  70. </p></dd>
  71. <dt> <code><var>application-name</var>: null character in prompt</code></dt>
  72. <dd><p>An interactive application (invoked rightly or wrongly with &lsquo;<samp>-i</samp>&rsquo;,
  73. &lsquo;<samp>-t</samp>&rsquo;, or &lsquo;<samp>-s</samp>&rsquo;) is required to exchange strings of non-null
  74. characters internally with <code>avram</code>, and used a null.
  75. </p></dd>
  76. <dt> <code><var>application-name</var>: invalid file name (code <var>nn</var>)</code></dt>
  77. <dd><p>The data structure representing a file obtained from an application
  78. has a name consisting of something other than character strings. This
  79. error could be the result of a filter mode application (<a href="Filter-Mode.html#Filter-Mode">Filter Mode</a>) being invoked in parameter mode.
  80. <br>
  81. (<a href="Parameter-Mode.html#Parameter-Mode">Parameter Mode</a>)
  82. </p></dd>
  83. <dt> <code><var>application-name</var>: null character in file name</code></dt>
  84. <dd><a name="index-null-character-in-file-name"></a>
  85. <p>Similar to the above errors.
  86. </p></dd>
  87. <dt> <code><var>application-name</var>: bad character in file name</code></dt>
  88. <dd><a name="index-bad-character-in-file-name"></a>
  89. <p>Slashes, backslashes, and unprintable characters other than spaces are
  90. also prohibited in file names.
  91. </p></dd>
  92. <dt> <code><var>application-name</var>: invalid output preamble format</code></dt>
  93. <dd><a name="index-invalid-output-preamble-format"></a>
  94. <p>According the format used by <code>avram</code> for data files, a data file
  95. may contain an optional text portion, known as the preamble. This
  96. error occurs when a data file obtained from an application can not be
  97. written because the preamble is something other than a list of
  98. character strings.
  99. </p></dd>
  100. <dt> <code><var>application-name</var>: invalid file specification</code></dt>
  101. <dd><a name="index-invalid-file-specification"></a>
  102. <p>This error occurs in situations where the data structure for a file
  103. obtained by evaluating the application is too broken to permit any
  104. more specific diagnosis.
  105. </p></dd>
  106. <dt> <code>avram: invalid raw file format in <var>application-name</var></code></dt>
  107. <dd><a name="index-invalid-raw-file-format"></a>
  108. <p>The file containing the virtual machine code was not able to be
  109. loaded, because the code was not in a recognizable format. Either the
  110. file has become corrupted, the compiler that generated it has a
  111. bug in it, or the wrong file was used as a virtual code file.
  112. </p></dd>
  113. </dl>
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  118. <td valign="middle" align="left"> &nbsp; </td>
  119. <td valign="middle" align="left">[<a href="User-Manual.html#User-Manual" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
  120. <td valign="middle" align="left">[<a href="Diagnostics.html#Diagnostics" title="Up section"> Up </a>]</td>
  121. <td valign="middle" align="left">[<a href="Virtual-Machine-Specification.html#Virtual-Machine-Specification" title="Next chapter"> &gt;&gt; </a>]</td>
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