/*************************************************************************
* (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
*  by Michael Pounov <misho@openbsd-bg.org>
*
* $Author: misho $
* $Id: aitio.h,v 1.4 2010/04/16 13:25:27 misho Exp $
*
*************************************************************************/
#ifndef __AITIO_H
#define __AITIO_H


typedef struct _tagURLItem {
	int	vallen;
	char	*value;
} url_Item_t;

struct tagIOURL {
	unsigned char	url_line[BUFSIZ];

	url_Item_t	url_tech;
	url_Item_t	url_user;
	url_Item_t	url_pass;
	url_Item_t	url_host;
	url_Item_t	url_port;
	url_Item_t	url_path;
	url_Item_t	url_args;

	char		*url_reserved;
};

struct tagIOCmd {
	const char *cmd_name;
	int (*cmd_func)(void *, FILE *, char **);
	const char *cmd_doc;
	const char *cmd_help;
	char *(*cmd_comp)(const char *, int);
};

typedef struct tagIOCmd ioCommands_t;
typedef char *io_CompEntry_t(const char *, int);
typedef char **io_Completion_t(const char *, int, int);


// io_GetErrno() Get error code of last operation
inline int io_GetErrno();
// io_GetError() Get error text of last operation
inline const char *io_GetError();


/*
 * ioPromptRead() Read data from input h[0] with prompt to output h[1]
 * @h = file handles h[0] = input, h[1] = output, if NULL use stdin, stdout
 * @csPrompt = Prompt before input, may be NULL
 * @psData = Readed data
 * @dataLen = Length of data
 * return: 0 EOF; -1 error:: can`t read; >0 count of readed chars
*/
int ioPromptRead(int *h, const char *csPrompt, char * __restrict psData, int dataLen);
/*
 * ioPromptPassword() Read password from input h[0] with prompt to output h[1]
 * @h = file handles h[0] = input, h[1] = output, if NULL use stdin, stdout
 * @csPrompt = Prompt before input, may be NULL
 * @psPass = Readed password
 * @passLen = Length of password
 * @confirm = Confirm password, 0 - get password, !=0 Ask for confirmation
 * return: 0 EOF; -1 error:: can`t read; >0 count of readed chars
*/
int ioPromptPassword(int *h, const char *csPrompt, char * __restrict psPass, int passLen, int confirm);

/*
 * ioRegexVerify() Function for verify data match in regex expression
 * @csRegex = Regulare expression pattern
 * @csData = Data for check and verify
 * @startPos = Return start positions
 * @endPos = Return end positions
 * return: NULL not match or error; !=NULL begin of matched data
*/
const char *ioRegexVerify(const char *csRegex, const char *csData, int *startPos, int *endPos);
/*
 * ioRegexGet() Function for get data match in regex expression
 * @csRegex = Regulare expression pattern
 * @csData = Data from get
 * @psString = Returned string if match
 * @strLen = Length of string
 * return: 0 not match; >0 count of returned chars
*/
int ioRegexGet(const char *csRegex, const char *csData, char * __restrict psString, int strLen);
/*
 * ioRegexReplace() Function for replace data match in regex expression with newdata
 * @csRegex = Regulare expression pattern
 * @csData = Source data
 * @csNew = Data for replace
 * return: NULL not match or error; !=NULL allocated new string, must be free after use!
*/
char *ioRegexReplace(const char *csRegex, const char *csData, const char *csNew);

/*
 * io_Path2File() Parse and make path/filename pair
 * @csArgs = Input argument line
 * @psPath = Output Path, if ==NULL path not returned
 * @pathLen = Size of path array
 * @psFile = Output File
 * @fileLen = Size of file array
 * return: 0 error format; -1 error:: can`t read; >0 ok, number of readed items
*/
inline int io_Path2File(const char * __restrict csArgs, char * __restrict psPath, int pathLen, 
		char * __restrict psFile, int fileLen);
/*
 * io_MakeAV() Parse and make attribute/value pair
 * @csArgs = Input argument line
 * @csDelim = Delimiter for separate
 * @psAttr = Output Attribute
 * @attrLen = Size of attribute array
 * @psValue = Output Value, if ==NULL this element not present value or not wanted for return
 * @valLen = Size of value array
 * return: 0 error format; -1 error:: can`t read; >0 ok, number of readed items
*/
inline int io_MakeAV(const char * __restrict csArgs, const char *csDelim, 
		char * __restrict psAttr, int attrLen, char * __restrict psValue, int valLen);
/*
 * io_SizeArray() Parse and calculate size of array
 * @csArgs = Input arguments line
 * @csDelim = Delimiter(s) for separate
 * return: 0 error format; -1 error:: can`t read; >0 ok, number of items
*/
inline int io_SizeArray(const char *csArgs, const char *csDelim);
/*
 * io_MakeArray() Parse and make array of arguments values ... 
 *	(input string will be modified! and output array must be free)
 * @psArgs = Input arguments line, after execute string is modified!!!
 * @csDelim = Delimiter(s) for separate
 * @args = Output array of arguments ... (must be free() after procced function!)
 * @nargs = Maximum requested count of arguments from input string psArgs
 * return: 0 error format; -1 error:: can`t read; >0 ok, number of readed items
*/
inline int io_MakeArray(char * __restrict psArgs, const char *csDelim, 
		char *** __restrict args, int nargs);

/*
 * io_UnquotStr() Remove quots from input text string 
 * @psLine = Text string
 * return: 0 nothing to do; 1 successful unquoted string
*/
inline int io_UnquotStr(unsigned char *psLine);
/*
 * io_LTrimStr() Remove left whitespaces from text string
 * @psLine = Text string
 * return: 0 nothing to do; !=0 Removed bytes
*/
inline int io_LTrimStr(unsigned char *psLine);
/*
 * io_RTrimStr() Remove right whitespaces from text string
 * @psLine = Text string
 * return: 0 nothing to do; !=0 Removed bytes
*/
inline int io_RTrimStr(unsigned char *psLine);
/*
 * io_TrimStr() Remove left and right whitespaces from text string
 * @psLine = Text string
 * return: 0 nothing to do; !=0 Removed bytes
*/
inline int io_TrimStr(unsigned char *psLine);
/*
 * io_Char2Hex() Convert from Char string to Hex string
 * @psLine = Text string
 * @lineLen = Length of Text string
 * return: NULL nothing to do or error; !=0 Allocated new converted string(must be free)
*/
inline char *io_Char2Hex(unsigned char *psLine, int lineLen);
/*
 * io_Hex2Char() Convert from Hex string to Char string
 * @psLine = Text string
 * @lineLen = Length of Text string
 * return: NULL nothing to do or error; !=0 Allocated new converted string(must be free)
*/
inline char *io_Hex2Char(unsigned char *psLine, int lineLen);

/*
 * ioURLGet() Parse and get data from input URL
 * @csURL = Input URL line
 * @url = Output parsed URL
 * return: 0 error format not find tech:// and return URL like path; 
 		-1 error:: can`t read; >0 ok, up bits for known elements
*/
int ioURLGet(const char *csURL, struct tagIOURL *url);
/*
 * ioURLGetValue() Get value from parsed URL
 * @url = Input parsed URL
 * @csAttr = Attribute for search
 * @psValue = Return value of attribute, if ==NULL only check for existence of attribute
 * @valLen = Size of psValue array
 * return: 0 error attribute not find; -1 error:: can`t read; >0 ok, find at position
*/
int ioURLGetValue(struct tagIOURL *url, const char *csAttr, char * __restrict psValue, int valLen);
/*
 * ioURLGetFile() Get file from parsed URL
 * @url = Input parsed URL
 * @psValue = Return filename, if not specified file in url path, replace with /
 * @valLen = Size of psValue array
 * return: -1 error:: can`t read; 0 ok
*/
int ioURLGetFile(struct tagIOURL *url, char * __restrict psValue, int valLen);

/*
 * ioCLIComp() Initialize completion CLI features
 * @cmdComplete = Completion function
 * @cmdEntry = Compentry function
 * return: none
*/
inline void ioCLIComp(io_Completion_t *cmdComplete, io_CompEntry_t *cmdEntry);
/*
 * ioCLIExec() Execute CLI main loop
 * @cmdList = Commands list
 * @out = Output handle
 * @csPrompt = Prompt text
 * return: -1 error, 0 = exit w/^+D, 1 done.
*/
int ioCLIExec(ioCommands_t *cmdList, FILE *out, const char *csPrompt);

/*
 * io_Cmd_Unsupported() Builtin helper function for unsupported commands
 * @cmds = Commands list
 * @out = Output handle
 * @args = Parsed arguments array
 * return: -1 error, 0 = ok, 1 exit from Cli!
*/
int io_Cmd_Unsupported(void *cmds, FILE *out, char ** __restrict args);
/*
 * io_Cmd_Help() Builtin helper function for Help screen
 * @cmds = Commands list
 * @out = Output handle
 * @args = Parsed arguments array
 * return: -1 error, 0 = ok
*/
int io_Cmd_Help(void *cmds, FILE *out, char ** __restrict args);
/*
 * io_Cmd_Exit() Builtin helper function for Exit from Cli
 * @cmds = Commands list
 * @out = Output handle
 * @args = Parsed arguments array
 * return: 1 exit from Cli!
*/
int io_Cmd_Exit(void *cmds, FILE *out, char ** __restrict args);


/*
 * io_Make_Comp_Commands - Declare helper function for Commands completion arguments
*/
#define IO_MAKE_COMP_COMMANDS(FUNC, CMDS)	\
	char *FUNC(const char *text, int state) \
	{ \
		register int i; \
		int len = strlen(text); \
		for (i = state; CMDS[i].cmd_name; i++) { \
			if (strncmp(CMDS[i].cmd_name, "---", 3) && \
					!strncmp(CMDS[i].cmd_name, text, len)) \
				return strdup(CMDS[i].cmd_name); \
		} \
		return NULL; \
	}

/*
 * io_Make_Comp_Args - Declare helper function for Arguments completion
*/
#define IO_MAKE_COMP_ARGS(FUNC, ARGS)	\
	char *FUNC(const char *text __attribute__((unused)), int state) \
	{ \
		while (ARGS[state]) \
			return strdup(ARGS[state]); \
		return NULL; \
	}

/*
 * io_Comp_Filename() Builtin helper function for filename completion arguments
 * @text = Text line
 * @state = Position state
 * return: NULL not found filename, != NULL filename
*/
char *io_Comp_Filename(const char *text, int state);


#endif