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/*
* Copyright (C) 2012-2023 Sébastien Helleu <flashcode@flashtux.org>
*
* This file is part of WeeChat, the extensible chat client.
*
* WeeChat is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* WeeChat is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with WeeChat. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef WEECHAT_EVAL_H
#define WEECHAT_EVAL_H
#include <regex.h>
#define EVAL_STR_FALSE "0"
#define EVAL_STR_TRUE "1"
#define EVAL_DEFAULT_PREFIX "${"
#define EVAL_DEFAULT_SUFFIX "}"
#define EVAL_RECURSION_MAX 32
#define EVAL_RANGE_DIGIT "0123456789"
#define EVAL_RANGE_XDIGIT EVAL_RANGE_DIGIT "abcdefABCDEF"
#define EVAL_RANGE_LOWER "abcdefghijklmnopqrstuvwxyz"
#define EVAL_RANGE_UPPER "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
#define EVAL_RANGE_ALPHA EVAL_RANGE_LOWER EVAL_RANGE_UPPER
#define EVAL_RANGE_ALNUM EVAL_RANGE_ALPHA EVAL_RANGE_DIGIT
struct t_hashtable;
enum t_eval_logical_op
{
EVAL_LOGICAL_OP_OR = 0,
EVAL_LOGICAL_OP_AND,
/* number of comparison strings */
EVAL_NUM_LOGICAL_OPS,
};
enum t_eval_comparison
{
EVAL_COMPARE_REGEX_MATCHING = 0,
EVAL_COMPARE_REGEX_NOT_MATCHING,
EVAL_COMPARE_STRING_MATCHING_CASE_SENSITIVE,
EVAL_COMPARE_STRING_NOT_MATCHING_CASE_SENSITIVE,
EVAL_COMPARE_STRING_MATCHING,
EVAL_COMPARE_STRING_NOT_MATCHING,
EVAL_COMPARE_INCLUDE_CASE_SENSITIVE,
EVAL_COMPARE_NOT_INCLUDE_CASE_SENSITIVE,
EVAL_COMPARE_INCLUDE,
EVAL_COMPARE_NOT_INCLUDE,
EVAL_COMPARE_EQUAL,
EVAL_COMPARE_NOT_EQUAL,
EVAL_COMPARE_LESS_EQUAL,
EVAL_COMPARE_LESS,
EVAL_COMPARE_GREATER_EQUAL,
EVAL_COMPARE_GREATER,
/* number of comparison strings */
EVAL_NUM_COMPARISONS,
};
struct t_eval_regex
{
const char *result;
regmatch_t match[100];
int last_match;
};
struct t_eval_context
{
struct t_hashtable *pointers; /* pointers used in eval */
struct t_hashtable *extra_vars; /* extra variables used in eval */
struct t_hashtable *user_vars; /* user-defined variables */
int extra_vars_eval; /* 1 if extra vars must be evaluated */
const char *prefix; /* prefix (default is "${") */
int length_prefix; /* length of prefix */
const char *suffix; /* suffix (default is "}") */
int length_suffix; /* length of suffix */
struct t_eval_regex *regex; /* in case of replace with regex */
int regex_replacement_index; /* replacement index (≥ 1) */
int recursion_count; /* to prevent infinite recursion */
int debug_level; /* 0: no debug, 1: debug, 2: extra */
int debug_depth; /* used for debug indentation */
int debug_id; /* operation id in debug output */
char **debug_output; /* string with debug output */
};
extern int eval_is_true (const char *value);
extern char *eval_expression (const char *expr,
struct t_hashtable *pointers,
struct t_hashtable *extra_vars,
struct t_hashtable *options);
#endif /* WEECHAT_EVAL_H */
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