# User parser

    /*
    **	(c) COPYRIGHT MIT 1996.
    **	Please first read the full copyright statement in the file COPYRIGH.
    */

This module provides the interface to CSUser.c. Labels are parsed from strings (see CSParse.html). These labels may then be kept in a CSUser_t structure for inspection by the application or compared to the values in a CSLabel_t structure (see CSLL.html).

    #ifndef CSUSER_H
    #define CSUSER_H

### State Change Enumeration

Call to the TargetChangeCallback will have one of the following values.

    typedef enum {
    	CSUserTC_USER = 1,
    	CSUserTC_SERVICE,
    	CSUserTC_RLIST,
    	CSUserTC_RATING,
    	CSUserTC_RANGE,
    	CSUserTC_COUNT
    } CSUserTC_t;

### Data shell

All PICS user data is stored in a CSUserData_t

    typedef struct CSUserData_s CSUserData_t;

### TargetChangeCallback

As the label is parsed, it will call the assigned TargetChangeCallback as it passes from state to state.

    typedef StateRet_t UserTargetCallback_t(CSUser_t * pCSUser,
    				  CSParse_t * pCSParse,
    				  CSUserTC_t target, BOOL closed,
    				  void * pVoid);

### ErrorHandler

All parsing error will be passed to the Apps UserErrorHandler for user display or automatic dismissal.

    typedef StateRet_t UserErrorHandler_t(CSUser_t * pCSUser, CSParse_t * pCSParse,
     				      const char * token, char demark,
    				      StateRet_t errorCode);

### Construction/Destruction

These methods allow the user to create and get access to both the user and the state. CSUsers may be cloned so that one saves state while another continues to iterate or parse. The states mus all be freed. User data will only be freed after all the CSUsers that refer to it are deleted.

    extern CSParse_t * CSParse_newUser(void);
    extern BOOL CSParse_deleteUser(CSParse_t *);
    extern CSUser_t * CSParse_getUser(CSParse_t * me);
    extern char * CSUser_name(CSUser_t * pCSUser);
    extern BOOL CSUser_checkPassword(CSUser_t * pCSUser, char * password);
    extern char * CSUser_bureau(CSUser_t * pCSUser);
    extern void CSUser_free(CSUser_t * me);
    extern Range_t * CSUser_getUserRatingRange(CSUser_t * pCSUser);
    extern char * CSUser_getRatingStr(CSUser_t * pCSUser);

### Iterating methods

### Callback function

The Iterators are passed a callback function to be called for each matching element. For instance, when iterating through ranges, the callback function is called once for each range, or, if a match is requested, only for the matching range.

    typedef CSError_t CSUser_callback_t(CSUser_t *,
    			            State_Parms_t *, const char *,
    				    void * pVoid);
    typedef CSError_t CSUser_iterator_t(CSUser_t *,
    				    CSUser_callback_t *,
    				    State_Parms_t *, const char *,
    				    void * pVoid);

    extern CSUser_iterator_t CSUser_iterateServices;
    extern CSUser_iterator_t CSUser_iterateServiceRatings;

    extern CSError_t CSCheckLabel_checkLabelAndUser(CSLabel_t * pCSLabel,
    						CSUser_t * pCSUser);
    extern CSError_t CSCheckLabel_parseAndValidateLabelStr(const char * label,
    						       CSUser_t * pCSUser);

## CSUser_acceptLabels

get a malloced HTTP Protocol-Request string requesting PICS labels for all services defined for pCSUser

    extern char * CSUser_acceptLabels(CSUser_t * pCSUser,
    				  CSCompleteness_t completeness);

## CSUser_getLabels

get a malloced HTTP GET string requesting PICS labels for all services defined for a user

    extern char * CSUser_getLabels(CSUser_t * pCSUser, char * url,
    			       CSOption_t option,
    			       CSCompleteness_t completeness);

## CSUser_postLabels

get a malloced HTTP POST string requesting PICS labels for all services defined for a user

    extern char * CSUser_postLabels(CSUser_t * pCSUser, char * url,
    				CSOption_t option,
    				CSCompleteness_t completeness);

    #endif /* CSUser_H */

End of Declaration