注释转换

最新推荐文章于 2025-08-01 11:03:06 发布

HandsomeWGB

最新推荐文章于 2025-08-01 11:03:06 发布

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CC 4.0 BY-SA版权

文章标签： c语言注释转换 c++

本文链接：https://blog.youkuaiyun.com/ADDw1/article/details/53485917

本文介绍了一个用于转换C/C++源代码中注释格式的程序。该程序能够处理不同类型的注释，并将其转换为统一格式，方便阅读和维护。主要实现了对单行注释、多行注释及嵌套注释的处理。

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#include "commentconvert.h"


enum State state = NUL_STATE;           //将state的状态置为无状态

void DoNulState(FILE* pfIn,FILE* pfOut)      //无状态处理
{
	int first = 0;
	first = fgetc(pfIn);
	switch(first)
	{
	case '/':
		{
			int second = 0;
			second = fgetc(pfIn);
			switch(second)
			{
			case '*':
				{
					fputc(first,pfOut);
					fputc('/',pfOut);
					state = C_STATE;
					break;
				}
			case '/':
				{
					fputc(first,pfOut);
					fputc(second,pfOut);
					state = CPP_STATE;
				}
				break;
			default:
				{
					fputc(first,pfOut);
					fputc(second,pfOut);
				}
				break;
			}
		}
		break;
	case EOF:
		{
			fputc(first,pfOut);
			state = NUL_STATE;
		}
		break;
	default:
		fputc(first,pfOut);
		break;
	}
}
void DoCState(FILE* pfIn,FILE* pfOut)     //C_STATE状态处理
{
	int first = 0;
	first = fgetc(pfIn);
	switch(first)
	{
	case '*':
		{
			int second = 0;
			second = fgetc(pfIn);
			switch(second)
			{
			case '/':
				{
					int third = 0;
					third = fgetc(pfIn);
					state = NUL_STATE;
					if(third == '\n')
					{
						//fputc(third,pfOut);
						ungetc(third,pfIn);
					}
					else
					{
						fputc('\n',pfOut);
						ungetc(third,pfIn);
					}
				}
				break;
			case '*':
				{
					int third = 0;
					third = fgetc(pfIn);
					state = NUL_STATE;
					if(third == '/')
					{
						int four = 0;
						four = fgetc(pfIn);
						if(four == '\n')
						{
							ungetc(four,pfIn);
							//fputc('\n',pfOut);
						}
						else
						{
							fputc('\n',pfOut);
						    ungetc(four,pfIn);
						}
					}
					ungetc(second,pfIn);
				}
				break;
			default:
				{
					fputc(first,pfOut);
					ungetc(second,pfIn);
				}
			}
		}
		break;
	case '\n':
		{
			fputc(first,pfOut);
			fputc('/',pfOut);
			fputc('/',pfOut);
		}
		break;
	default:
		fputc(first,pfOut);
		break;
	}
}
void DoCppState(FILE* pfIn,FILE* pfOut)    //CPP_STATE状态处理
{
	int first = 0;
	first = fgetc(pfIn);
	if(first == '\n')
	{
		fputc(first,pfOut);
		state = NUL_STATE;
	}
	else if(first == EOF)
	{
		fputc(first,pfOut);
		state = END_STATE;
	}
	else
	{
		fputc(first,pfOut);
	}
}

void Docommentconvert(FILE* pfIn,FILE* pfOut)
{
	while(state != END_STATE)
	{
		switch(state)
		{
		case NUL_STATE:
			DoNulState(pfIn,pfOut);
			break;
		case C_STATE:
			DoCState(pfIn,pfOut);
			break;
		case CPP_STATE:
			DoCppState(pfIn,pfOut);
			break;
		default:
			break;
		}
	}
}
#include "commentconvert.h"


void Commentconvert()
{
	FILE *pfRead = NULL;
	FILE *pfWrite = NULL;
	pfRead = fopen("input.c","r");    
	if(pfRead == NULL)     //判断文件打开是否成功
	{
		perror("open file for input:");
		exit(EXIT_FAILURE);
	}
	pfWrite = fopen("output.c","w");
	if(pfRead == NULL)
	{
		perror("open file for output:");
		fclose(pfRead);         //到这里pfRead已经打开，所以关闭
		exit(EXIT_FAILURE);
	}
	Docommentconvert(pfRead,pfWrite);
	fclose(pfRead);
	fclose(pfWrite);

}


int main()
{
	Commentconvert();
	system("pause");
	return 0;
}#ifndef __COMMENT_CONVERT_H__
#define __COMMENT_CONVERT_H__

#include 
#include 
#include 


enum State
{
	NUL_STATE,
	C_STATE,
	CPP_STATE,
	END_STATE
};



void Docommentconvert(FILE *pfIn,FILE *pfOut);

void DoNulState(FILE* pfIn,FILE* pfOut);
void DoCState(FILE* pfIn,FILE* pfOut);
void DoCppState(FILE* pfIn,FILE* pfOut);




#endif//__COMMENT_CONVERT_H__// 1.一般情况
/* int i = 0; */

// 2.换行问题
/* int i = 0; */int j = 0;
/* int i = 0; */
int j = 0;

// 3.匹配问题
/*int i = 0;/*xxxxx*/

// 4.多行注释问题
/*
int i=0;
int j = 0;
int k = 0;
*/int k = 0;

// 5.连续注释问题
/*ww*//*ww*/

// 6.连续的**/问题
/***/

// 7.C++注释问题
// /*xxxxxxxxxxxx*/