/*
   Bacula® - The Network Backup Solution

   Copyright (C) 2003-2014 Free Software Foundation Europe e.V.

   The main author of Bacula is Kern Sibbald, with contributions from many
   others, a complete list can be found in the file AUTHORS.

   You may use this file and others of this release according to the
   license defined in the LICENSE file, which includes the Affero General
   Public License, v3.0 ("AGPLv3") and some additional permissions and
   terms pursuant to its AGPLv3 Section 7.

   Bacula® is a registered trademark of Kern Sibbald.
*/
/*
**  OSSP var - Variable Expansion
**  Copyright (c) 2001-2002 Ralf S. Engelschall <rse@engelschall.com>
**  Copyright (c) 2001-2002 The OSSP Project (http://www.ossp.org/)
**  Copyright (c) 2001-2002 Cable & Wireless Deutschland (http://www.cw.com/de/)
**
**  This file is part of OSSP var, a variable expansion
**  library which can be found at http://www.ossp.org/pkg/lib/var/.
**
**  Permission to use, copy, modify, and distribute this software for
**  any purpose with or without fee is hereby granted, provided that
**  the above copyright notice and this permission notice appear in all
**  copies.
**
**  For disclaimer see below.
*/
/*
 * Modified for use with Bacula by Kern Sibbald, June 2003
 */



#ifndef __VAR_H__
#define __VAR_H__

/* Error codes */
typedef enum {
    VAR_ERR_CALLBACK                        = -64,
    VAR_ERR_FORMATTING_FAILURE              = -45,
    VAR_ERR_UNDEFINED_OPERATION             = -44,
    VAR_ERR_MALFORMED_OPERATION_ARGUMENTS   = -43,
    VAR_ERR_INVALID_CHAR_IN_LOOP_LIMITS     = -42,
    VAR_ERR_UNTERMINATED_LOOP_CONSTRUCT     = -41,
    VAR_ERR_DIVISION_BY_ZERO_IN_INDEX       = -40,
    VAR_ERR_UNCLOSED_BRACKET_IN_INDEX       = -39,
    VAR_ERR_INCOMPLETE_INDEX_SPEC           = -37,
    VAR_ERR_INVALID_CHAR_IN_INDEX_SPEC      = -36,
    VAR_ERR_ARRAY_LOOKUPS_ARE_UNSUPPORTED   = -35,
    VAR_ERR_INCOMPLETE_QUOTED_PAIR          = -34,
    VAR_ERR_INVALID_ARGUMENT                = -34,
    VAR_ERR_SUBMATCH_OUT_OF_RANGE           = -33,
    VAR_ERR_UNKNOWN_QUOTED_PAIR_IN_REPLACE  = -32,
    VAR_ERR_EMPTY_PADDING_FILL_STRING       = -31,
    VAR_ERR_MISSING_PADDING_WIDTH           = -30,
    VAR_ERR_MALFORMATTED_PADDING            = -29,
    VAR_ERR_INCORRECT_TRANSPOSE_CLASS_SPEC  = -28,
    VAR_ERR_EMPTY_TRANSPOSE_CLASS           = -27,
    VAR_ERR_TRANSPOSE_CLASSES_MISMATCH      = -26,
    VAR_ERR_MALFORMATTED_TRANSPOSE          = -25,
    VAR_ERR_OFFSET_LOGIC                    = -24,
    VAR_ERR_OFFSET_OUT_OF_BOUNDS            = -23,
    VAR_ERR_RANGE_OUT_OF_BOUNDS             = -22,
    VAR_ERR_INVALID_OFFSET_DELIMITER        = -21,
    VAR_ERR_MISSING_START_OFFSET            = -20,
    VAR_ERR_EMPTY_SEARCH_STRING             = -19,
    VAR_ERR_MISSING_PARAMETER_IN_COMMAND    = -18,
    VAR_ERR_INVALID_REGEX_IN_REPLACE        = -17,
    VAR_ERR_UNKNOWN_REPLACE_FLAG            = -16,
    VAR_ERR_MALFORMATTED_REPLACE            = -15,
    VAR_ERR_UNKNOWN_COMMAND_CHAR            = -14,
    VAR_ERR_INPUT_ISNT_TEXT_NOR_VARIABLE    = -13,
    VAR_ERR_UNDEFINED_VARIABLE              = -12,
    VAR_ERR_INCOMPLETE_VARIABLE_SPEC        = -11,
    VAR_ERR_OUT_OF_MEMORY                   = -10,
    VAR_ERR_INVALID_CONFIGURATION           =  -9,
    VAR_ERR_INCORRECT_CLASS_SPEC            =  -8,
    VAR_ERR_INCOMPLETE_GROUPED_HEX          =  -7,
    VAR_ERR_INCOMPLETE_OCTAL                =  -6,
    VAR_ERR_INVALID_OCTAL                   =  -5,
    VAR_ERR_OCTAL_TOO_LARGE                 =  -4,
    VAR_ERR_INVALID_HEX                     =  -3,
    VAR_ERR_INCOMPLETE_HEX                  =  -2,
    VAR_ERR_INCOMPLETE_NAMED_CHARACTER      =  -1,
    VAR_OK                                  =   0
} var_rc_t;

struct var_st;
typedef struct var_st var_t;

typedef enum {
    VAR_CONFIG_SYNTAX,
    VAR_CONFIG_CB_VALUE,
    VAR_CONFIG_CB_OPERATION
} var_config_t;

typedef struct {
    char  escape;       /* default: '\' */
    char  delim_init;   /* default: '$' */
    char  delim_open;   /* default: '{' */
    char  delim_close;  /* default: '}' */
    char  index_open;   /* default: '[' */
    char  index_close;  /* default: ']' */
    char  index_mark;   /* default: '#' */
    const char *name_chars;   /* default: "a-zA-Z0-9_" */
} var_syntax_t;

typedef var_rc_t (*var_cb_value_t)(
    var_t *var, void *ctx,
    const char  *var_ptr, int     var_len, int var_inc, int var_idx,
    const char **val_ptr, int    *val_len, int    *val_size
);

typedef var_rc_t (*var_cb_operation_t)(
    var_t *var, void *ctx,
    const char  *op_ptr,  int    op_len,
    const char  *arg_ptr, int    arg_len,
    const char  *val_ptr, int    val_len,
    const char **out_ptr, int    *out_len, int *out_size
);


var_rc_t  var_create    (var_t **var);
var_rc_t  var_destroy   (var_t  *var);
var_rc_t  var_config    (var_t  *var, var_config_t mode, ...);
var_rc_t  var_unescape  (var_t  *var, const char *src_ptr, int src_len, char  *dst_ptr, int dst_len, int all);
var_rc_t  var_expand    (var_t  *var, const char *src_ptr, int src_len, char **dst_ptr, int *dst_len, int force_expand);
var_rc_t  var_formatv   (var_t  *var, char **dst_ptr, int force_expand, const char *fmt, va_list ap);
var_rc_t  var_format    (var_t  *var, char **dst_ptr, int force_expand, const char *fmt, ...);
const char *var_strerror  (var_t  *var, var_rc_t rc);

#endif /* __VAR_H__ */
