66 lines
1.3 KiB
PHP
66 lines
1.3 KiB
PHP
<?php
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/**
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* Input_BIN - YAGSDisasm Input byte device for binary blobs
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*
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*/
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class Input_BIN
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{
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// have we been initialized yet?
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private $is_initialized = false;
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// source filename
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private $source_filename;
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// volume length in bytes
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private $total_bytes;
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// our file descriptor
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private $fp;
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public function __construct( $filename )
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{
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$fp = fopen( $filename, 'r' );
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if( !$fp )
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{
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throw new Exception( 'Input_BIN: Unable to open source file '.$filename );
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}
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// source filename
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$this->source_filename = $filename;
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// bytes of disk data
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$this->total_bytes = filesize( $filename );
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$this->is_initialized = true;
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$this->fp = $fp;
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}
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/**
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* getBytes( $starting_byte, $num_bytes ) - Retrieve $num_bytes bytes from the file, starting at $starting_byte
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* @param $starting_byte int, $num_bytes int
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* @return $data str
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*/
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public function getBytes( $starting_byte, $num_bytes )
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{
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if( $num_bytes == 'all' )
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{
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return file_get_contents( $this->source_filename );
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}
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fseek( $fp, $starting_byte, SEEK_SET );
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$data = '';
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$data .= fread( $fp, $num_bytes );
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return $data;
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}
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/**
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* printInfo() - Print some information about this binary image
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*/
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public function printInfo()
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{
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echo "Source Filename: ".$this->source_filename."\n";
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echo " Image Format: Binary\n";
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echo " Total Bytes: ".$this->total_bytes."\n";
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}
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} |