main-c.cpp

来自「是算术编码界码的程序」· C++ 代码 · 共 75 行

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "errhand.h"
#include "bitio.h"
#include "main.h"





void usage_exit(char *prog_name);





int main(int argc,char *argv[])
{
	FILE *output;
    BIT_FILE *input;





	setbuf(stdout,NULL);
	if(argc<3)
		usage_exit(argv[0]);
	input=OpenInputBitFile(argv[1]);
	if(input==NULL)
		fatal_error("Error opening %s for input\n",argv[1]);
	output=fopen(argv[2],"wb");
	if(output==NULL)
		fatal_error("Error opening %s for output\n",argv[2]);
	printf("\nExpanding %s to %s\n",argv[1],argv[2]);
	printf("Using %s\n",CompressionName);
	argc-=3;
	argv+=3;
	ExpandFile(input,output,argc,argv);
	CloseInputBitFile(input);
	fclose(output);
	return(0);
}








void usage_exit(char *prog_name)
{
	char *short_name;
	char *extension;


	short_name=strrchr(prog_name,'\\');
	if(short_name==NULL)
		short_name=strrchr(prog_name,'/');
	if(short_name==NULL)
		short_name=strrchr(prog_name,':');
	if(short_name!=NULL)
		short_name++;
	else
		short_name=prog_name;
	extension=strrchr(short_name,'.');
	if(extension!=NULL)
		*extension='\0';
	printf("\nUsage:%s%s\n",short_name,Usage);
	exit(0);
}