自学教程：C++ trim_filename函数代码示例

voidrtl_check_failed_block_symbol (const char *file, int line, const char *func){  internal_error    ("RTL check: attempt to treat non-block symbol as a block symbol "     "in %s, at %s:%d", func, trim_filename (file), line);}

voidvec_assert_fail (const char *op, const char *struct_name,		 const char *file, unsigned int line, const char *function){  internal_error ("vector %s %s domain error, in %s at %s:%u",		  struct_name, op, function, trim_filename (file), line);}

voidvarray_underflow (varray_type va, const char *file, int line,		  const char *function){  internal_error ("underflowed virtual array %s in %s, at %s:%d",		  va->name, function, trim_filename (file), line);}

voidrtl_check_failed_flag (const char *name, const_rtx r, const char *file,		       int line, const char *func){  internal_error    ("RTL flag check: %s used with unexpected rtx code '%s' in %s, at %s:%d",     name, GET_RTX_NAME (GET_CODE (r)), func, trim_filename (file), line);}

/* XXX Maybe print the vector?  */voidrtvec_check_failed_bounds (const_rtvec r, int n, const char *file, int line,			   const char *func){  internal_error    ("RTL check: access of elt %d of vector with last elt %d in %s, at %s:%d",     n, GET_NUM_ELEM (r) - 1, func, trim_filename (file), line);}

voidrtl_check_failed_code1 (const_rtx r, enum rtx_code code, const char *file,			int line, const char *func){  internal_error ("RTL check: expected code '%s', have '%s' in %s, at %s:%d",		  GET_RTX_NAME (code), GET_RTX_NAME (GET_CODE (r)), func,		  trim_filename (file), line);}

voidrtl_check_failed_type2 (const_rtx r, int n, int c1, int c2, const char *file,			int line, const char *func){  internal_error    ("RTL check: expected elt %d type '%c' or '%c', have '%c' (rtx %s) in %s, at %s:%d",     n, c1, c2, GET_RTX_FORMAT (GET_CODE (r))[n], GET_RTX_NAME (GET_CODE (r)),     func, trim_filename (file), line);}

voidrtl_check_failed_bounds (const_rtx r, int n, const char *file, int line,			 const char *func){  internal_error    ("RTL check: access of elt %d of '%s' with last elt %d in %s, at %s:%d",     n, GET_RTX_NAME (GET_CODE (r)), GET_RTX_LENGTH (GET_CODE (r)) - 1,     func, trim_filename (file), line);}

voidvarray_check_failed (varray_type va, size_t n, const char *file, int line,		     const char *function){  internal_error ("virtual array %s[%lu]: element %lu out of bounds "		  "in %s, at %s:%d",		  va->name, (unsigned long) va->num_elements, (unsigned long) n,		  function, trim_filename (file), line);}

voidrtl_check_failed_code_mode (const_rtx r, enum rtx_code code, enum machine_mode mode,			    bool not_mode, const char *file, int line,			    const char *func){  internal_error ((not_mode		   ? ("RTL check: expected code '%s' and not mode '%s', "		      "have code '%s' and mode '%s' in %s, at %s:%d")		   : ("RTL check: expected code '%s' and mode '%s', "		      "have code '%s' and mode '%s' in %s, at %s:%d")),		  GET_RTX_NAME (code), GET_MODE_NAME (mode),		  GET_RTX_NAME (GET_CODE (r)), GET_MODE_NAME (GET_MODE (r)),		  func, trim_filename (file), line);}

/* Print out the GetLastError() translation.  */ static inline voidw32_error (const char* function, const char* file, int line,	   const char* my_msg){  LPSTR w32_msgbuf;  FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER		  | FORMAT_MESSAGE_FROM_SYSTEM		  | FORMAT_MESSAGE_IGNORE_INSERTS		  | FORMAT_MESSAGE_MAX_WIDTH_MASK,    		  NULL, GetLastError(),		  MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),		  (LPSTR) &w32_msgbuf, 0, NULL);  fprintf(stderr, "internal error in %s, at %s:%d: %s: %s/n",	  function, trim_filename (file), line, my_msg, w32_msgbuf);  LocalFree ((HLOCAL)w32_msgbuf);}

/* * Man FIFO routine running in the FIFO * processes requests received * through the FIFO file repeatedly */int fifo_process(char* msg_buf, int size, int* bytes_needed, void *sh,					void** saved_state){	rpc_export_t* exp;	char* buf;	int line_len;	char *file_sep;	struct text_chunk* p;	struct rpc_struct* s;	int r;	int req_size;	static rpc_ctx_t context; 	DBG("process_fifo: called with %d bytes, offset %d: %.*s/n",			size, (int)(long)*saved_state, size, msg_buf);	/* search for the end of the request (/n/r) */	if (size < 6){ /* min fifo request */		*bytes_needed=6-size;		return 0; /* we want more bytes, nothing processed */	}	for (r=1+(int)(long)*saved_state;r<size;r++){		if ((msg_buf[r]=='/n' || msg_buf[r]=='/r') &&			(msg_buf[r-1]=='/n'|| msg_buf[r-1]=='/r')){			/* found double cr, or double lf => end of request */			req_size=r;			goto process;		}	}	/* no end of request found => ask for more bytes */	*bytes_needed=1;	/* save current offset, to optimize search */	*saved_state=(void*)(long)(r-1);	return 0; /* we want again the whole buffer */process:		DBG("process_fifo  %d bytes request: %.*s/n", 			req_size, req_size, msg_buf);	file_sep = 0;	context.method = 0;	context.reply_file = 0;	context.body = 0;	context.code = 200;	context.reason = "OK";	context.reply_sent = 0;	context.last = 0;	context.line_no = 0;	context.read_h.s=msg_buf;	context.read_h.end=msg_buf+size;	context.read_h.crt=msg_buf;	context.send_h=(struct send_handle*)sh;		     /* commands must look this way ':<command>:[filename]' */		if (read_line(&buf, &line_len, &context.read_h) < 0) {			     /* line breaking must have failed -- consume the rest			      * and proceed to a new request			      */			ERR("Command expected/n");			goto consume;		}		context.line_no++;		if (line_len == 0) {			DBG("Empty command received/n");			goto consume;		}		if (line_len < 3) {			ERR("Command must have at least 3 chars/n");			goto consume;		}		if (*buf != CMD_SEPARATOR) {			ERR("Command must begin with %c: %.*s/n", 			    CMD_SEPARATOR, line_len, buf);			goto consume;		}		context.method = buf + 1;		file_sep = strchr(context.method, CMD_SEPARATOR);		if (file_sep == NULL) {			ERR("File separator missing/n");			goto consume;		}		if (file_sep == context.method) {			ERR("Empty command/n");			goto consume;		}		if (*(file_sep + 1) == 0) context.reply_file = NULL; 		else {			context.reply_file = file_sep + 1;			context.reply_file = trim_filename(context.reply_file);			if (context.reply_file == 0) {				ERR("Trimming filename/n");				goto consume;			}		}		     /* make command zero-terminated */		*file_sep = 0;		//.........这里部分代码省略.........