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6d7e181767
This way, we can handle parse trees of arbitrary depth without running into stack overflows. Of course, evaluation is still a problem... While at it, use "const char*" everywhere, and also put the query parser into an Init() function so we can return more statuses than just B_BAD_VALUE. Part of #18692. Change-Id: Ib81e6545935ce484df10dfe36ca4ffcf2b3cd607 Reviewed-on: https://review.haiku-os.org/c/haiku/+/7710 Reviewed-by: waddlesplash <waddlesplash@gmail.com>
69 lines
1.4 KiB
C++
69 lines
1.4 KiB
C++
/*
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* Copyright 2001-2014, Axel Dörfler, axeld@pinc-software.de.
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* Copyright 2010, Clemens Zeidler <haiku@clemens-zeidler.de>
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* Copyright 2011, Ingo Weinhold, ingo_weinhold@gmx.de.
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* This file may be used under the terms of the MIT License.
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*/
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#ifndef _FILE_SYSTEMS_QUERY_PARSER_UTILS_H
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#define _FILE_SYSTEMS_QUERY_PARSER_UTILS_H
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#include <sys/cdefs.h>
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#ifdef FS_SHELL
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# include <new>
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# include "fssh_api_wrapper.h"
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# include "fssh_auto_deleter.h"
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#else
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# include <SupportDefs.h>
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#endif // !FS_SHELL
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namespace QueryParser {
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enum match {
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NO_MATCH = 0,
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MATCH_OK = 1,
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MATCH_BAD_PATTERN = -2,
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MATCH_INVALID_CHARACTER
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};
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// return values from isValidPattern()
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enum {
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PATTERN_INVALID_ESCAPE = -3,
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PATTERN_INVALID_RANGE,
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PATTERN_INVALID_SET
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};
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__BEGIN_DECLS
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void skipWhitespace(const char** expr, int32 skip = 0);
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void skipWhitespaceReverse(const char** expr, const char* stop);
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int compareKeys(uint32 type, const void* key1, size_t length1,
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const void* key2, size_t length2);
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uint32 utf8ToUnicode(const char** string);
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int32 getFirstPatternSymbol(const char* string);
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status_t isValidPattern(const char* pattern);
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status_t matchString(const char* pattern, const char* string);
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__END_DECLS
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static inline bool
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isPattern(char* string)
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{
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return getFirstPatternSymbol(string) >= 0 ? true : false;
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}
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} // namespace QueryParser
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#endif // _FILE_SYSTEMS_QUERY_PARSER_UTILS_H
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