#define _CRT_SECURE_NO_WARNINGS 1 #include <stdio.h> #include <assert.h> #include <stdlib.h> typedef enum ConvertState { SUCCESS, FILE_ERROR, NO_MATCH, }ConvertState; typedef enum State { C_BEGIN, C_END, CPP_BEGIN, CPP_END, }State; ConvertState Convert(FILE* fIn, FILE* fOut) { ConvertState ret = SUCCESS; char first, second; State tag = C_END; assert(fIn); assert(fOut); do { first = fgetc(fIn); switch (first) { case '/': second = fgetc(fIn); if (second == '*') { if (tag == C_END) { fputc('/', fOut); fputc('/', fOut); tag = C_BEGIN; } else { fputc('/', fOut); fputc('*', fOut); } } else if (second == '/') { char next; fputc('/', fOut); fputc('/', fOut); do { next = fgetc(fIn); fputc(next, fOut); if (next == EOF) { return ret; } } while (next != '\n'); } else { fputc(first, fOut); fputc(second, fOut); } break; case '\n'://多行注释问题 fputc('\n', fOut); if (tag == C_BEGIN) { fputc('/', fOut); fputc('/', fOut); } break; case '*': second = fgetc(fIn); if (second == '/') { //换行问题 char next = fgetc(fIn); //连续注释问题 if (next == '/') { fputc('\n', fOut); fseek(fIn, -1, SEEK_CUR); } else if (next != '\n' && next != EOF) { fputc('\n', fOut); fputc(next, fOut); } else { fputc('\n', fOut); } tag = C_END; } else if (second == '*') { fputc(first, fOut); fseek(fIn, -1, SEEK_CUR); } else { fputc(first, fOut); fputc(second, fOut); } break; default: if (first != EOF) fputc(first, fOut); break; } } while (first != EOF); if (tag != C_END) { ret = NO_MATCH; } return ret; } ConvertState AnnotationConvert(const char* inputFile, const char* outputFile) { ConvertState ret; FILE* fIn, *fOut; fIn = fopen(inputFile, 'r'); if (inputFile == NULL) { printf("打开文件%s失败, errno: %d\n", inputFile, errno); return FILE_ERROR; } fOut = fopen(outputFile, 'w'); if (outputFile == NULL) { fclose(fIn); printf("打开文件%s失败,errno: %d\n", outputFile, errno); return FILE_ERROR; } ret = convert(fIn,fOut); fclose(fIn); fclose(fOut); return ret; } int main() { }
注释转换--
C语言的注释 -> C++的注释
C语言的注释 /* xxxxx */
C++的注释 //xxxxx
// 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
/**//**/
// 6.连续的**/问题
/***/
// 7.C++注释问题
// /*xxxxxxxxxxxx*/
// 8.C注释本身不匹配
/* int i = 0;