以下是重构后的代码:

```c

#include

int main() {

while (FCGI_Accept() >= 0) { // 这里进入循环,前台每请求一次fcgi服务,就循环一次

char *query_string = getenv("QUERY_STRING");

// 从获得的query_string解析查询字段,进行兴许操作。

// 用printf返回处理结果给webserver,再由webserver将结果返回给client。

// 这里的printf函数是在fcgi_stdio.h中又一次定义了的

}

return 0;

}

```

} FCGI_FILE;

/*

* The four new functions and two new macros

*/

int DLLAPI FCGI_Accept(void);

void DLLAPI FCGI_Finish(void);

int DLLAPI FCGI_StartFilterData(void);

void DLLAPI FCGI_SetExitStatus(int status);

#define FCGI_ToFILE(fcgi_file) (fcgi_file->stdio_stream)

#define FCGI_ToFcgiStream(fcgi_file) (fcgi_file->fcgx_stream)

/*

* Wrapper stdin, stdout, and stderr variables, set up by FCGI_Accept()

*/

extern FCGI_FILE _fcgi_sF[];

#define FCGI_stdin (&_fcgi_sF[0])

#define FCGI_stdout (&_fcgi_sF[1])

#define FCGI_stderr (&_fcgi_sF[2])

/*

* Wrapper function prototypes, grouped according to sections

* of Harbison & Steele, "C: A Reference Manual," fourth edition,

* Prentice-Hall, 1995.

*/

void DLLAPI FCGI_perror(const char *str);

FCGI_FILE *DLLAPI FCGI_fopen(const char *path, const char *mode);

int DLLAPI FCGI_fclose(FCGI_FILE *fp);

int DLLAPI FCGI_fflush(FCGI_FILE *fp);

以下是重构后的代码:

FCGI_API FCGI_FILE *FCGI_freopen(const char *path, const char *mode, FCGI_FILE *fp);

FCGI_API int FCGI_setvbuf(FCGI_FILE *fp, char *buf, int bufmode, size_t size);

FCGI_API void FCGI_setbuf(FCGI_FILE *fp, char *buf);

FCGI_API int FCGI_fseek(FCGI_FILE *fp, long offset, int whence);

FCGI_API int FCGI_ftell(FCGI_FILE *fp);

FCGI_API void FCGI_rewind(FCGI_FILE *fp);

#ifdef HAVE_FPOS

FCGI_API int FCGI_fgetpos(FCGI_FILE *fp, fpos_t *pos);

FCGI_API int FCGI_fsetpos(FCGI_FILE *fp, const fpos_t *pos);

#endif

FCGI_API int FCGI_fgetc(FCGI_FILE *fp);

FCGI_API int FCGI_getchar(void);

FCGI_API int FCGI_ungetc(int c, FCGI_FILE *fp);

FCGI_API char *FCGI_fgets(char *str, int size, FCGI_FILE *fp);

FCGI_API char *FCGI_gets(char *str);

/*

* Not yet implemented

*

* int FCGI_fscanf(FCGI_FILE *fp, const char *format, ...);

* int FCGI_scanf(const char *format, ...);

*

*/

FCGI_API int FCGI_fputc(int c, FCGI_FILE *fp);

以下是根据提供的内容重构的代码,并保持了段落结构:

```c

// DLLAPI 声明的函数原型

DLLAPI int FCGI_putchar(int c);

DLLAPI int FCGI_fputs(const char *str, FCGI_FILE *fp);

DLLAPI int FCGI_puts(const char *str);

DLLAPI int FCGI_fprintf(FCGI_FILE *fp, const char *format, ...);

DLLAPI int FCGI_printf(const char *format, ...);

DLLAPI int FCGI_vfprintf(FCGI_FILE *fp, const char *format, va_list ap);

DLLAPI int FCGI_vprintf(const char *format, va_list ap);

DLLAPI size_t FCGI_fread(void *ptr, size_t size, size_t nmemb, FCGI_FILE *fp);

DLLAPI size_t FCGI_fwrite(void *ptr, size_t size, size_t nmemb, FCGI_FILE *fp);

DLLAPI int FCGI_feof(FCGI_FILE *fp);

DLLAPI int FCGI_ferror(FCGI_FILE *fp);

DLLAPI void FCGI_clearerr(FCGI_FILE *fp);

DLLAPI FCGI_FILE *FCGI_tmpfile(void);

DLLAPI int FCGI_fileno(FCGI_FILE *fp);

DLLAPI FCGI_FILE *FCGI_fdopen(int fd, const char *mode);

DLLAPI FCGI_FILE *FCGI_popen(const char *cmd, const char *type);

DLLAPI int FCGI_pclose(FCGI_FILE *);

```

以下是重构后的内容:

#ifndef NO_FCGI_DEFINES

/*

* 将标准类型、变量和函数替换为FastCGI包装器。

* 使用undef以防宏已定义。

*/

#undef FILE

#define FILE FCGI_FILE

#undef stdin

#define stdin FCGI_stdin

#undef stdout

#define stdout FCGI_stdout

#undef stderr

#define stderr FCGI_stderr

#undef perror

#define perror FCGI_perror

#undef fopen

#define fopen FCGI_fopen

#undef fclose

#define fclose FCGI_fclose

#undef fflush

#define fflush FCGI_fflush

#undef freopen

#define freopen FCGI_freopen

#undef setvbuf

#define setvbuf FCGI_setvbuf

#undef setbuf

#define setbuf FCGI_setbuf

#undef fseek

#define fseek FCGI_fseek

#undef ftell

#define ftell FCGI_ftell

#undef rewind

#define rewind FCGI_rewind

#undef fgetpos

#define fgetpos FCGI_fgetpos

#undef fsetpos

#define fsetpos FCGI_fsetpos

#undef fgetc

#define fgetc FCGI_fgetc

#undef getc

*/

/* 剩余的定义仅适用于应用程序程序,而不是fcgi_stdio.c */

/* 在这里添加应用程序程序的定义 */*/

这段代码是将一些C语言标准库函数重命名为FCGI_版本号的函数。这样做的目的是为了避免与其他C语言标准库函数名冲突,同时保持代码的兼容性。例如,getc被重命名为FCGI_fgetc,getchar被重命名为FCGI_getchar,等等。

这些重构后的函数和原来的函数在功能上是相同的,但是它们使用了不同的名称。这意味着在使用这些函数时,需要确保正确地引用它们的新名称。

```c

#ifndef _FCGI_STDIO

#define _FCGI_STDIO

// undef pclose

#undef pclose

#define pclose FCGI_pclose

// terminate extern "C" {

#if defined (__cplusplus) || defined (c_plusplus)

} /* terminate extern "C" { */

#endif

#endif /* _FCGI_STDIO */

```