programanalys.cpp

数据结构是编程的基础

// programanalys.cpp : Defines the entry point for the console application.
//

#define NULL 0
#include "stdafx.h"


   //////////////////////输出预定义////////////////////
#define PRINTA(name) fprintf(outfile," 等级 A : 函数%s风格优!\n",name)
#define PRINTB(name) fprintf(outfile," 等级 B : 函数%s风格良!\n",name)
#define PRINTC(name) fprintf(outfile," 等级 C : 函数%s风格中!\n",name)
#define PRINTD(name) fprintf(outfile," 等级 D : 函数%s风格差!\n",name)
//////////////////////输出预定义////////////////////

//////////////////////全局变量定义////////////////////
int codelength=0;                                     //代码行长
int commentlength=0;                                  //注释行长
int blanklength=0;                                    //空白行长
int functionnumber=0;                                 //函数个数
int functionlength=0;                                 //函数总长
int bracketnumber=0;                                   //value=0:在函数外
int linestate=0;                                       //空行为0，代码为1
int wait;                                              //可能进入函数value=1
char infilename[30]="program.c";                       //源文件
char outfilename[30]="output.txt";                     //目标文件
FILE *infile,*outfile;                                 //读写文件流
//////////////////////全局变量定义////////////////////

//////////////////////判别行是否注释行////////////////////
char comment()
{
	char tempchar;
	if('/'==fgetc(infile))
	{
		while(!feof(infile)&&10!=tempchar&&13!=tempchar)
		{
			tempchar=fgetc(infile);
		}
		if(!linestate)
		{
			commentlength++;
		}
		else
		{
			codelength++;
			if(bracketnumber)
			{
				functionlength++;
			}
		}
		if(feof(infile))linestate=2;
		else linestate=0;
		return tempchar;
	}
	else
	{
		wait=0;
		linestate=1;
	}
	if(feof(infile))linestate=2;
	return 0;
}
//////////////////////判别行是否注释行////////////////////

//////////////////////取字符并进行处理////////////////////
void getlinechar()
{
	char nowchar=0,lastchar=0;
	while(!feof(infile))
	{
		if(10!=lastchar&&13!=lastchar)lastchar=0;
		nowchar=fgetc(infile);
		switch(nowchar)
		{
		case ' '  :break;
		case 9    :break;
		case '/'  :lastchar=comment();break;
		case ')'  :if(!bracketnumber)wait=1;linestate=1;break;
		case '}'  :if(bracketnumber)bracketnumber--;linestate=1;break;
			////////////////////////若读到‘{’进行处理///////////////////////////////////////
		case '{'  :
			if(bracketnumber||wait)	
			{
				if(!bracketnumber)
				{
					functionnumber++;
					wait=0;
				}
				bracketnumber++;
			}
			linestate=1;break;
			////////////////////////若读到“回车符”进行处理///////////////////////////////////////
		case '\n' :
			if(13==lastchar)
			{lastchar=0;linestate=0;break;}
			if(linestate)
			{
				codelength++;
				if(bracketnumber)
				{
					functionlength++;
				}				
			}
			else 
			{
				blanklength++;
			}
			linestate=0;lastchar=10;break;
			////////////////////////若读到“换行符”进行处理///////////////////////////////////////
		case 13   :
			if(10==lastchar)
			{lastchar=0;linestate=0;break;}
			if(linestate)
			{
				codelength++;
				if(bracketnumber)
				{
					functionlength++;
				}				
			}
			else
			{
				blanklength++;
			}
			linestate=0;lastchar=13;break;

		default   :linestate=1;
		}
	}
	if(10!=nowchar&&13!=nowchar&&1==linestate)
	{
		codelength++;
	}
	if(10!=nowchar&&13!=nowchar&&0==linestate)
	{
		blanklength++;
	}
	return;
}
//////////////////////取字符并进行处理////////////////////


int main(int argc, char* argv[])
{
	char filename[30];
	int sum,code,comment,blank;
	float function;
	////////////////////////打开源文件///////////////////////////////////////
	printf("请输入待测程序名(文件不存在则为program.c):");
	scanf("%s",filename);
	if((infile=fopen(filename,"r"))==NULL) 
	{
		infile=fopen(infilename,"r");
	}
	else
	{
		strcpy(infilename,filename);
	}
////////////////////////打开目标文件///////////////////////////////////////
	printf("请指定结果输出的文件名(文件创建或打开失败则为output.txt):");
	scanf("%s",filename);
	if((outfile=fopen(filename,"w"))==NULL) 
	{
		outfile=fopen(outfilename,"w");
	}
	else
	{
		strcpy(outfilename,filename);
	}
	getlinechar();
	fclose(infile);
	sum=codelength+commentlength+blanklength;
	code=codelength*100/sum;
	comment=commentlength*100/sum;
	blank=100-code-comment;
	function=(float)functionlength/(float)functionnumber+1;

	fprintf(outfile,"程序代码共 %d 行\n",codelength);
	fprintf(outfile,"程序注释共 %d 行\n",commentlength);
	fprintf(outfile,"程序空白行共 %d 行\n",blanklength);
	fprintf(outfile,"程序代码占 %%%d \n",code);
	fprintf(outfile,"程序注释占 %%%d \n",comment);
	fprintf(outfile,"程序空白行占 %%%d \n",blank);
	fprintf(outfile,"程序共 %d 个函数\n",functionnumber);
	fprintf(outfile,"函数的平均长度为 %.1f 行\n",function);

	if(function>=10&&function<=15)
		PRINTA("长度");
	else
		if((function>=8&&function<=9)||(function>=16&&function<=20))
			PRINTB("长度");
		else
			if(function>24||function<5)
				PRINTD("长度");
			else
				PRINTC("长度");

	if(comment>=15&&comment<=25)
		PRINTA("注释");
	else
		if((comment>=10&&comment<=14)||(comment>=26&&comment<=30))
			PRINTB("注释");
		else
			if(comment>35||comment<5)
				PRINTD("注释");
			else
				PRINTC("注释");

	if(blank>=15&&blank<=25)
		PRINTA("空白");
	else
		if((blank>=10&&blank<=14)||(blank>=26&&blank<=30))
			PRINTB("空白");
		else
			if(blank>35||blank<5)
				PRINTD("空白");
			else
				PRINTC("空白");
	fclose(outfile);
	return 0;
}