REC.CPP
Verze z 20. 12. 2012, 17:30, kterou vytvořil Zdeno Sekerák (diskuse | příspěvky)
/* File rec.cpp by Dustin Caldwell (dustin@gse.utah.edu) */ #include <dos.h> #include <stdio.h> #include <ctype.h> #include <stdlib.h> void helpdoc(); main() { FILE *rfp, *wfp; unsigned char ch, c; char s[20]; if((rfp=fopen(_argv[1], "r"))==NULL) /* open the read file */ { printf("cannot open file %s \n",_argv[1]); helpdoc(); exit(-1); } if((wfp=fopen(_argv[2], "wb"))==NULL) /* open the write file */ { printf("cannot open file %s \n",_argv[1]); helpdoc(); exit(-1); } c=0; ch=fgetc(rfp); while(!feof(rfp)) /* loop for whole file */ { if(isalnum(ch)) /* only 'see' valid ascii chars */ { c=0; while(isdigit(ch)) /* only use decimal digits (0-9) */ { s[c]=ch; /* build a string containing the number */ c++; ch=fgetc(rfp); } s[c]=NULL; /* must have NULL terminator */ fputc(atoi(s), wfp);/* write the binary equivalent to file */ } ch=fgetc(rfp); /* loop until next number starts */ } fclose(rfp); /* close up */ fclose(wfp); } void helpdoc() /* print help message */ { printf("\n Text File Encoder\n\n"); printf("\n Syntax: rec text_file_name binary_file_name\n\n"); printf("by Dustin Caldwell (dustin@gse.utah.edu)\n\n"); printf("This is a program that reads an ascii tab-\n"); printf("delimited file and builds a binary file where\n"); printf("each byte of the binary file is one of the decimal\n"); printf("digits in the text file.\n"); printf(" eg:\n\n"); printf("c:\>rec son3.txt son3.mid\n\n"); printf("(This will create a file called son3.mid which is\n"); printf("a valid binary file)\n\n"); printf("(dec.exe may also be useful, as it decodes binary files)\n\n"); printf("Have Fun!!\n"); }