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POConvert binary data file generated in windows to linux
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copied!<p>I apologize ahead of time for my lack of c knowledge, as I am a native FORTRAN programmer. I was given some c code to debug which ingests a binary file and parses it into an input file containing several hundred records (871, to be exact) for a Fortran program that I'm working with. The problem is that these input binaries, and the associated c code, were created in a Windows environment. The parser reads through the binary until it reaches the end of the file:</p> <pre><code>SAGE_Lvl0_Packet GetNextPacket() { int i; SAGE_Lvl0_Packet inpkt; WORD rdbuf[128]; memset(rdbuf,0,sizeof(rdbuf)); fprintf(stdout,"Nbytes: %u\n",Nbytes);//returns 224 if((i = fread(rdbuf,Nbytes,1,Fp)) != 1) FileEnd = 1; else { if(FileType == 0) memcpy(&(inpkt.CCSDS),rdbuf,Nbytes); else memcpy(&inpkt,rdbuf,Nbytes); memcpy(&CurrentPacket,&inpkt,sizeof(inpkt)); } return inpkt; } </code></pre> <p>So when the code gets to packet 872, this snippet should return FileEnd = 1. Instead, the parser attempts to read a large amount of data from (near) the end of the file. This, I would think, would cause the program to crash (at least it would in Fortran. Would c just start reading the next portion of memory?) Fortunately, there is a CRC later on in the code that catches that the parser isn't reading correct data and exits gracefully. </p> <p>I assume the problem originates with the binary buffer size and value in a Windows binary being larger/different than that in Linux. If that is the case, is there an easy way to convert Windows' binaries to Linux either in c or Linux? If I'm wrong in my assumption, then perhaps I need to look over the code some more. BTW, a WORD is an unsigned short int, and a SAGE_Lvl0_Packet is a 3-tiered structure with a total of 106 WORDs.</p>

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