log.h

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#ifndef LY_LOG_H_
#define LY_LOG_H_

#include <stdint.h>

#include "config.h"

#ifdef __cplusplus
extern "C" {
#endif

/* dummy context structure */
struct ly_ctx;

typedef uint8_t ly_bool;

typedef enum {
    LY_LLERR = 0, 
    LY_LLWRN = 1, 
    LY_LLVRB = 2, 
    LY_LLDBG = 3  
} LY_LOG_LEVEL;

LIBYANG_API_DECL LY_LOG_LEVEL ly_log_level(LY_LOG_LEVEL level);

#define LY_LOLOG        0x01 
#define LY_LOSTORE      0x02 
#define LY_LOSTORE_LAST 0x06 
LIBYANG_API_DECL uint32_t ly_log_options(uint32_t opts);

LIBYANG_API_DECL void ly_temp_log_options(uint32_t *opts);

#ifndef NDEBUG

#define LY_LDGDICT      0x01    
#define LY_LDGXPATH     0x02    
#define LY_LDGDEPSETS   0x04    
uint32_t ly_log_dbg_groups(uint32_t dbg_groups);

#endif

typedef void (*ly_log_clb)(LY_LOG_LEVEL level, const char *msg, const char *path);

LIBYANG_API_DECL void ly_set_log_clb(ly_log_clb clb, ly_bool path);

LIBYANG_API_DECL ly_log_clb ly_get_log_clb(void);

typedef enum {
    LY_SUCCESS = 0, 
    LY_EMEM,        
    LY_ESYS,        
    LY_EINVAL,      
    LY_EEXIST,      
    LY_ENOTFOUND,   
    LY_EINT,        
    LY_EVALID,      
    LY_EDENIED,     
    LY_EINCOMPLETE, 
    LY_ERECOMPILE,  
    LY_ENOT,        
    LY_EOTHER,      
    LY_EPLUGIN = 128
} LY_ERR;

typedef enum {
    LYVE_SUCCESS = 0,  
    LYVE_SYNTAX,       
    LYVE_SYNTAX_YANG,  
    LYVE_SYNTAX_YIN,   
    LYVE_REFERENCE,    
    LYVE_XPATH,        
    LYVE_SEMANTICS,    
    LYVE_SYNTAX_XML,   
    LYVE_SYNTAX_JSON,  
    LYVE_DATA,         
    LYVE_OTHER         
} LY_VECODE;

struct ly_err_item {
    LY_LOG_LEVEL level;
    LY_ERR no;
    LY_VECODE vecode;
    char *msg;
    char *path;
    char *apptag;
    struct ly_err_item *next;
    struct ly_err_item *prev; /* first item's prev points to the last item */
};

LIBYANG_API_DECL const char *ly_last_errmsg(void);

LIBYANG_API_DECL LY_VECODE ly_vecode(const struct ly_ctx *ctx);

LIBYANG_API_DECL LY_ERR ly_errcode(const struct ly_ctx *ctx);

LIBYANG_API_DECL const char *ly_errmsg(const struct ly_ctx *ctx);

LIBYANG_API_DECL const char *ly_errpath(const struct ly_ctx *ctx);

LIBYANG_API_DECL const char *ly_errapptag(const struct ly_ctx *ctx);

LIBYANG_API_DECL struct ly_err_item *ly_err_first(const struct ly_ctx *ctx);

LIBYANG_API_DECL struct ly_err_item *ly_err_last(const struct ly_ctx *ctx);

LIBYANG_API_DECL void ly_err_print(const struct ly_ctx *ctx, struct ly_err_item *eitem);

LIBYANG_API_DECL void ly_err_clean(struct ly_ctx *ctx, struct ly_err_item *eitem);

#ifdef __cplusplus
}
#endif

#endif /* LY_LOG_H_ */