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Diffstat (limited to 'connectivity/source/inc/file/FStringFunctions.hxx')
| -rw-r--r-- | connectivity/source/inc/file/FStringFunctions.hxx | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/connectivity/source/inc/file/FStringFunctions.hxx b/connectivity/source/inc/file/FStringFunctions.hxx new file mode 100644 index 000000000..b3d72294f --- /dev/null +++ b/connectivity/source/inc/file/FStringFunctions.hxx @@ -0,0 +1,269 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#pragma once + +#include <file/fcode.hxx> + +namespace connectivity::file + { + /** UCASE(str) + UPPER(str) + Returns the string str with all characters changed to uppercase according to the current character set mapping (the default is ISO-8859-1 Latin1): + + > SELECT UCASE('Hej'); + -> 'HEJ' + + */ + class OOp_Upper : public OUnaryOperator + { + protected: + virtual ORowSetValue operate(const ORowSetValue& lhs) const override; + }; + + /** LCASE(str) + LOWER(str) + Returns the string str with all characters changed to lowercase according to the current character set mapping (the default is ISO-8859-1 Latin1): + + > SELECT LCASE('QUADRATICALLY'); + -> 'quadratically' + + */ + class OOp_Lower : public OUnaryOperator + { + protected: + virtual ORowSetValue operate(const ORowSetValue& lhs) const override; + }; + + /** ASCII(str) + Returns the ASCII code value of the leftmost character of the string str. Returns 0 if str is the empty string. Returns NULL if str is NULL: + + > SELECT ASCII('2'); + -> 50 + > SELECT ASCII(2); + -> 50 + > SELECT ASCII('dx'); + -> 100 + + */ + class OOp_Ascii : public OUnaryOperator + { + protected: + virtual ORowSetValue operate(const ORowSetValue& lhs) const override; + }; + + /** LENGTH(str) + OCTET_LENGTH(str) + CHAR_LENGTH(str) + CHARACTER_LENGTH(str) + Returns the length of the string str: + + > SELECT LENGTH('text'); + -> 4 + > SELECT OCTET_LENGTH('text'); + -> 4 + + */ + class OOp_CharLength : public OUnaryOperator + { + protected: + virtual ORowSetValue operate(const ORowSetValue& lhs) const override; + }; + + /** CHAR(N,...) + CHAR() interprets the arguments as integers and returns a string consisting of the characters given by the ASCII code values of those integers. NULL values are skipped: + + > SELECT CHAR(ascii('t'),ascii('e'),ascii('s'),ascii('t')); + -> 'test' + > SELECT CHAR(77,77.3,'77.3'); + -> 'MMM' + + */ + class OOp_Char : public ONthOperator + { + protected: + virtual ORowSetValue operate(const std::vector<ORowSetValue>& lhs) const override; + }; + + /** CONCAT(str1,str2,...) + Returns the string that results from concatenating the arguments. Returns NULL if any argument is NULL. May have more than 2 arguments. A numeric argument is converted to the equivalent string form: + + > SELECT CONCAT('OO', 'o', 'OO'); + -> 'OOoOO' + > SELECT CONCAT('OO', NULL, 'OO'); + -> NULL + > SELECT CONCAT(14.3); + -> '14.3' + + */ + class OOp_Concat : public ONthOperator + { + protected: + virtual ORowSetValue operate(const std::vector<ORowSetValue>& lhs) const override; + }; + + /** LOCATE(substr,str) + POSITION(substr IN str) + Returns the position of the first occurrence of substring substr in string str. Returns 0 if substr is not in str: + + > SELECT LOCATE('bar', 'foobarbar'); + -> 4 + > SELECT LOCATE('xbar', 'foobar'); + -> 0 + LOCATE(substr,str,pos) + Returns the position of the first occurrence of substring substr in string str, starting at position pos. Returns 0 if substr is not in str: + + > SELECT LOCATE('bar', 'foobarbar',5); + -> 7 + + */ + class OOp_Locate : public ONthOperator + { + protected: + virtual ORowSetValue operate(const std::vector<ORowSetValue>& lhs) const override; + }; + + /** SUBSTRING(str,pos) + SUBSTRING(str FROM pos) + Returns a substring from string str starting at position pos: + + > SELECT SUBSTRING('Quadratically',5); + -> 'ratically' + > SELECT SUBSTRING('foobarbar' FROM 4); + -> 'barbar' + SUBSTRING(str,pos,len) + SUBSTRING(str FROM pos FOR len) + Returns a substring len characters long from string str, starting at position pos. The variant form that uses FROM is SQL-92 syntax: + + > SELECT SUBSTRING('Quadratically',5,6); + -> 'ratica' + + */ + class OOp_SubString : public ONthOperator + { + protected: + virtual ORowSetValue operate(const std::vector<ORowSetValue>& lhs) const override; + }; + + /** LTRIM(str) + Returns the string str with leading space characters removed: + + > SELECT LTRIM(' barbar'); + -> 'barbar' + + */ + class OOp_LTrim : public OUnaryOperator + { + protected: + virtual ORowSetValue operate(const ORowSetValue& lhs) const override; + }; + + /** RTRIM(str) + Returns the string str with trailing space characters removed: + + > SELECT RTRIM('barbar '); + -> 'barbar' + + */ + class OOp_RTrim : public OUnaryOperator + { + protected: + virtual ORowSetValue operate(const ORowSetValue& lhs) const override; + }; + + /** SPACE(N) + Returns a string consisting of N space characters: + + > SELECT SPACE(6); + -> ' ' + + */ + class OOp_Space : public OUnaryOperator + { + protected: + virtual ORowSetValue operate(const ORowSetValue& lhs) const override; + }; + + /** REPLACE(str,from_str,to_str) + Returns the string str with all occurrences of the string from_str replaced by the string to_str: + + > SELECT REPLACE('www.OOo.com', 'w', 'Ww'); + -> 'WwWwWw.OOo.com' + + */ + class OOp_Replace : public ONthOperator + { + protected: + virtual ORowSetValue operate(const std::vector<ORowSetValue>& lhs) const override; + }; + + /** REPEAT(str,count) + Returns a string consisting of the string str repeated count times. If count <= 0, returns an empty string. Returns NULL if str or count are NULL: + + > SELECT REPEAT('OOo', 3); + -> 'OOoOOoOOo' + + */ + class OOp_Repeat : public OBinaryOperator + { + protected: + virtual ORowSetValue operate(const ORowSetValue& lhs,const ORowSetValue& rhs) const override; + }; + + /** INSERT(str,pos,len,newstr) + Returns the string str, with the substring beginning at position pos and len characters long replaced by the string newstr: + + > SELECT INSERT('Quadratic', 3, 4, 'What'); + -> 'QuWhattic' + + */ + class OOp_Insert : public ONthOperator + { + protected: + virtual ORowSetValue operate(const std::vector<ORowSetValue>& lhs) const override; + }; + + /** LEFT(str,len) + Returns the leftmost len characters from the string str: + + > SELECT LEFT('foobarbar', 5); + -> 'fooba' + + */ + class OOp_Left : public OBinaryOperator + { + protected: + virtual ORowSetValue operate(const ORowSetValue& lhs,const ORowSetValue& rhs) const override; + }; + + /** RIGHT(str,len) + Returns the rightmost len characters from the string str: + + > SELECT RIGHT('foobarbar', 4); + -> 'rbar' + */ + class OOp_Right : public OBinaryOperator + { + protected: + virtual ORowSetValue operate(const ORowSetValue& lhs,const ORowSetValue& rhs) const override; + }; + +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |