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dd2aa04626
fail to compile exports.c git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@642629 13f79535-47bb-0310-9956-ffa450edef68
104 lines
3.4 KiB
C
104 lines
3.4 KiB
C
/* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "httpd.h"
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/* conditional expression parser stuff */
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typedef enum {
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TOKEN_STRING,
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TOKEN_RE,
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TOKEN_AND,
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TOKEN_OR,
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TOKEN_NOT,
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TOKEN_EQ,
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TOKEN_NE,
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TOKEN_RBRACE,
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TOKEN_LBRACE,
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TOKEN_GROUP,
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TOKEN_GE,
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TOKEN_LE,
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TOKEN_GT,
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TOKEN_LT,
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TOKEN_ACCESS
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} token_type_t;
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typedef struct {
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token_type_t type;
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const char *value;
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#ifdef DEBUG_INCLUDE
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const char *s;
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#endif
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} token_t;
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typedef struct parse_node {
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struct parse_node *parent;
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struct parse_node *left;
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struct parse_node *right;
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token_t token;
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int value;
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int done;
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#ifdef DEBUG_INCLUDE
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int dump_done;
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#endif
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} parse_node_t;
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typedef struct {
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const char *source;
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const char *rexp;
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apr_size_t nsub;
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ap_regmatch_t match[AP_MAX_REG_MATCH];
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} backref_t;
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typedef char *(*string_func_t)(request_rec*, const char*);
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typedef int (*opt_func_t)(request_rec*, parse_node_t*, string_func_t);
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/**
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* Parse an expression into a parse tree
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* @param pool Pool
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* @param expr The expression to parse
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* @param was_error On return, set to zero if parse successful, nonzero on error
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* @return The parse tree
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*/
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AP_DECLARE(parse_node_t*) ap_expr_parse(apr_pool_t *pool, const char *expr,
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int *was_error);
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/**
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* Evaluate a parse tree
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* @param r The current request
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* @param root The root node of the parse tree
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* @param was_error On return, set to zero if parse successful, nonzero on error
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* @param reptr Regular expression memory for backreferencing if a regexp was parsed
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* @param string_func String parser function - perform variable substitutions
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* @param eval_func Option evaluation function (e.g. -A filename)
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* @return the value the expression parsed to
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*/
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AP_DECLARE(int) ap_expr_eval(request_rec *r, parse_node_t *root,
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int *was_error, backref_t **reptr,
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string_func_t string_func, opt_func_t eval_func);
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/**
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* Evaluate an expression
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* @param r The current request
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* @param expr The expression to parse
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* @param was_error On return, set to zero if parse successful, nonzero on error
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* @param reptr Regular expression memory for backreferencing if a regexp was parsed
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* @param string_func String parser function - perform variable substitutions
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* @param eval_func Option evaluation function (e.g. -A filename)
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* @return the value the expression parsed to
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*/
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AP_DECLARE(int) ap_expr_evalstring(request_rec *r, const char *expr,
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int *was_error, backref_t **reptr,
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string_func_t string_func,
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opt_func_t eval_func);
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