490 lines
15 KiB
C++
490 lines
15 KiB
C++
//------------------------------------------------------------------------------
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// Copyright (c) 2001-2003, OpenBeOS
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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// File Name: String.h
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// Author(s): Stefano Ceccherini (burton666@libero.it)
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// Description: String class supporting common string operations.
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//------------------------------------------------------------------------------
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#ifndef __BSTRING__
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#define __BSTRING__
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#include <BeBuild.h>
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#include <SupportDefs.h>
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#include <string.h>
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class BString {
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public:
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BString();
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BString(const char *);
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BString(const BString &);
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BString(const char *, int32 maxLength);
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~BString();
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/*---- Access --------------------------------------------------------------*/
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const char *String() const;
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/* returns null-terminated string */
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int32 Length() const;
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/* length of corresponding string */
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int32 CountChars() const;
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/* returns number of UTF8 characters in string */
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/*---- Assignment ----------------------------------------------------------*/
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BString &operator=(const BString &);
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BString &operator=(const char *);
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BString &operator=(char);
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BString &SetTo(const char *);
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BString &SetTo(const char *, int32 length);
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BString &SetTo(const BString &from);
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BString &Adopt(BString &from);
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/* leaves <from> empty, avoiding a copy */
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BString &SetTo(const BString &, int32 length);
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BString &Adopt(BString &from, int32 length);
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/* leaves <from> empty, avoiding a copy */
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BString &SetTo(char, int32 count);
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/*---- Substring copying ---------------------------------------------------*/
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BString &CopyInto(BString &into, int32 fromOffset,
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int32 length) const;
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/* returns <into> ref as it's result; doesn't do
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* anything if <into> is <this>
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*/
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void CopyInto(char *into, int32 fromOffset,
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int32 length) const;
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/* caller guarantees that <into> is large enough */
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/*---- Appending -----------------------------------------------------------*/
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BString &operator+=(const BString &);
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BString &operator+=(const char *);
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BString &operator+=(char);
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BString &Append(const BString &);
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BString &Append(const char *);
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BString &Append(const BString &, int32 length);
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BString &Append(const char *, int32 length);
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BString &Append(char, int32 count);
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/*---- Prepending ----------------------------------------------------------*/
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BString &Prepend(const char *);
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BString &Prepend(const BString &);
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BString &Prepend(const char *, int32);
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BString &Prepend(const BString &, int32);
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BString &Prepend(char, int32 count);
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/*---- Inserting ----------------------------------------------------------*/
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BString &Insert(const char *, int32 pos);
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BString &Insert(const char *, int32 length, int32 pos);
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BString &Insert(const char *, int32 fromOffset,
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int32 length, int32 pos);
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BString &Insert(const BString &, int32 pos);
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BString &Insert(const BString &, int32 length, int32 pos);
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BString &Insert(const BString &, int32 fromOffset,
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int32 length, int32 pos);
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BString &Insert(char, int32 count, int32 pos);
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/*---- Removing -----------------------------------------------------------*/
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BString &Truncate(int32 newLength, bool lazy = true);
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/* pass false in <lazy> to ensure freeing up the
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* truncated memory
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*/
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BString &Remove(int32 from, int32 length);
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BString &RemoveFirst(const BString &);
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BString &RemoveLast(const BString &);
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BString &RemoveAll(const BString &);
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BString &RemoveFirst(const char *);
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BString &RemoveLast(const char *);
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BString &RemoveAll(const char *);
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BString &RemoveSet(const char *setOfCharsToRemove);
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BString &MoveInto(BString &into, int32 from, int32 length);
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void MoveInto(char *into, int32 from, int32 length);
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/* caller guarantees that <into> is large enough */
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/*---- Compare functions ---------------------------------------------------*/
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bool operator<(const BString &) const;
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bool operator<=(const BString &) const;
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bool operator==(const BString &) const;
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bool operator>=(const BString &) const;
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bool operator>(const BString &) const;
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bool operator!=(const BString &) const;
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bool operator<(const char *) const;
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bool operator<=(const char *) const;
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bool operator==(const char *) const;
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bool operator>=(const char *) const;
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bool operator>(const char *) const;
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bool operator!=(const char *) const;
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/*---- strcmp-style compare functions --------------------------------------*/
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int Compare(const BString &) const;
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int Compare(const char *) const;
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int Compare(const BString &, int32 n) const;
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int Compare(const char *, int32 n) const;
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int ICompare(const BString &) const;
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int ICompare(const char *) const;
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int ICompare(const BString &, int32 n) const;
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int ICompare(const char *, int32 n) const;
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/*---- Searching -----------------------------------------------------------*/
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int32 FindFirst(const BString &) const;
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int32 FindFirst(const char *) const;
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int32 FindFirst(const BString &, int32 fromOffset) const;
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int32 FindFirst(const char *, int32 fromOffset) const;
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int32 FindFirst(char) const;
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int32 FindFirst(char, int32 fromOffset) const;
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int32 FindLast(const BString &) const;
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int32 FindLast(const char *) const;
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int32 FindLast(const BString &, int32 beforeOffset) const;
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int32 FindLast(const char *, int32 beforeOffset) const;
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int32 FindLast(char) const;
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int32 FindLast(char, int32 beforeOffset) const;
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int32 IFindFirst(const BString &) const;
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int32 IFindFirst(const char *) const;
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int32 IFindFirst(const BString &, int32 fromOffset) const;
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int32 IFindFirst(const char *, int32 fromOffset) const;
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int32 IFindLast(const BString &) const;
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int32 IFindLast(const char *) const;
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int32 IFindLast(const BString &, int32 beforeOffset) const;
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int32 IFindLast(const char *, int32 beforeOffset) const;
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/*---- Replacing -----------------------------------------------------------*/
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BString &ReplaceFirst(char replaceThis, char withThis);
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BString &ReplaceLast(char replaceThis, char withThis);
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BString &ReplaceAll(char replaceThis, char withThis,
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int32 fromOffset = 0);
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BString &Replace(char replaceThis, char withThis,
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int32 maxReplaceCount, int32 fromOffset = 0);
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BString &ReplaceFirst(const char *replaceThis,
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const char *withThis);
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BString &ReplaceLast(const char *replaceThis,
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const char *withThis);
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BString &ReplaceAll(const char *replaceThis,
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const char *withThis, int32 fromOffset = 0);
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BString &Replace(const char *replaceThis, const char *withThis,
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int32 maxReplaceCount, int32 fromOffset = 0);
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BString &IReplaceFirst(char replaceThis, char withThis);
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BString &IReplaceLast(char replaceThis, char withThis);
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BString &IReplaceAll(char replaceThis, char withThis,
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int32 fromOffset = 0);
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BString &IReplace(char replaceThis, char withThis,
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int32 maxReplaceCount, int32 fromOffset = 0);
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BString &IReplaceFirst(const char *replaceThis,
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const char *withThis);
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BString &IReplaceLast(const char *replaceThis,
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const char *withThis);
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BString &IReplaceAll(const char *replaceThis,
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const char *withThis, int32 fromOffset = 0);
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BString &IReplace(const char *replaceThis, const char *withThis,
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int32 maxReplaceCount, int32 fromOffset = 0);
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BString &ReplaceSet(const char *setOfChars, char with);
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BString &ReplaceSet(const char *setOfChars, const char *with);
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/*---- Unchecked char access -----------------------------------------------*/
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char operator[](int32 index) const;
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char &operator[](int32 index);
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/*---- Checked char access -------------------------------------------------*/
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char ByteAt(int32 index) const;
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/*---- Fast low-level manipulation -----------------------------------------*/
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char *LockBuffer(int32 maxLength);
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/* Make room for characters to be added by C-string like manipulation.
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* Returns the equivalent of String(), <maxLength> includes space for
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* trailing zero while used as C-string, it is illegal to call other
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* BString routines that rely on data/length consistency until
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* UnlockBuffer sets things up again.
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*/
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BString &UnlockBuffer(int32 length = -1);
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/* Finish using BString as C-string, adjusting length. If no length
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* passed in, strlen of internal data is used to determine it.
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* BString is in consistent state after this.
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*/
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/*---- Upercase<->Lowercase ------------------------------------------------*/
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BString &ToLower();
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BString &ToUpper();
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BString &Capitalize();
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/* Converts first character to upper-case, rest to
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* lower-case
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*/
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BString &CapitalizeEachWord();
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/* Converts first character in each
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* non-alphabethycal-character-separated
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* word to upper-case, rest to lower-case
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*/
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/*----- Escaping and Deescaping --------------------------------------------*/
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BString &CharacterEscape(const char *original,
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const char *setOfCharsToEscape, char escapeWith);
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/* copies original into <this>, escaping characters
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* specified in <setOfCharsToEscape> by prepending
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* them with <escapeWith>
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*/
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BString &CharacterEscape(const char *setOfCharsToEscape,
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char escapeWith);
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/* escapes characters specified in <setOfCharsToEscape>
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* by prepending them with <escapeWith>
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*/
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BString &CharacterDeescape(const char *original, char escapeChar);
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/* copy <original> into the string removing the escaping
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* characters <escapeChar>
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*/
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BString &CharacterDeescape(char escapeChar);
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/* remove the escaping characters <escapeChar> from
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* the string
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*/
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/*---- Simple sprintf replacement calls ------------------------------------*/
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/*---- Slower than sprintf but type and overflow safe ----------------------*/
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BString &operator<<(const char *);
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BString &operator<<(const BString &);
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BString &operator<<(char);
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BString &operator<<(int);
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BString &operator<<(unsigned int);
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BString &operator<<(unsigned long);
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BString &operator<<(long);
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BString &operator<<(unsigned long long);
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BString &operator<<(long long);
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BString &operator<<(float);
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/* float output hardcodes %.2f style formatting */
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/*----- Private or reserved ------------------------------------------------*/
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private:
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void _Init(const char *, int32);
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void _DoAssign(const char *, int32);
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void _DoAppend(const char *, int32);
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char *_GrowBy(int32);
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char *_OpenAtBy(int32, int32);
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char *_ShrinkAtBy(int32, int32);
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void _DoPrepend(const char *, int32);
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int32 _FindAfter(const char *, int32, int32) const;
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int32 _IFindAfter(const char *, int32, int32) const;
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int32 _ShortFindAfter(const char *, int32) const;
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int32 _FindBefore(const char *, int32, int32) const;
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int32 _IFindBefore(const char *, int32, int32) const;
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BString &_DoReplace(const char *, const char *, int32, int32,
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bool);
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void _SetLength(int32);
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#if DEBUG
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void _SetUsingAsCString(bool);
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void _AssertNotUsingAsCString() const;
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#else
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void _SetUsingAsCString(bool) {}
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void _AssertNotUsingAsCString() const {}
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#endif
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char *_Alloc( int32);
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struct PosVect;
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void _ReplaceAtPositions( const PosVect* positions,
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int32 searchLen,
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const char* with,
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int32 withLen);
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protected:
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char *_privateData;
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};
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/*----- Comutative compare operators --------------------------------------*/
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bool operator<(const char *, const BString &);
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bool operator<=(const char *, const BString &);
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bool operator==(const char *, const BString &);
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bool operator>(const char *, const BString &);
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bool operator>=(const char *, const BString &);
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bool operator!=(const char *, const BString &);
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/*----- Non-member compare for sorting, etc. ------------------------------*/
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int Compare(const BString &, const BString &);
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int ICompare(const BString &, const BString &);
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int Compare(const BString *, const BString *);
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int ICompare(const BString *, const BString *);
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/*-------------------------------------------------------------------------*/
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/*---- No user serviceable parts after this -------------------------------*/
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inline int32
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BString::Length() const
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{
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return _privateData ? (*((int32 *)_privateData - 1) & 0x7fffffff) : 0;
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/* the most significant bit is reserved; accessing
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* it in any way will cause the computer to explode
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*/
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}
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inline const char *
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BString::String() const
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{
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if (!_privateData)
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return "";
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return _privateData;
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}
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inline BString &
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BString::SetTo(const char *str)
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{
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return operator=(str);
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}
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inline char
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BString::operator[](int32 index) const
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{
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return _privateData[index];
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}
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inline char
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BString::ByteAt(int32 index) const
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{
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if (!_privateData || index < 0 || index > Length())
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return 0;
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return _privateData[index];
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}
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inline BString &
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BString::operator+=(const BString &string)
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{
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_DoAppend(string.String(), string.Length());
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return *this;
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}
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inline BString &
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BString::Append(const BString &string)
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{
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_DoAppend(string.String(), string.Length());
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return *this;
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}
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inline BString &
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BString::Append(const char *str)
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{
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return operator+=(str);
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}
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inline bool
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BString::operator==(const BString &string) const
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{
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return strcmp(String(), string.String()) == 0;
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}
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inline bool
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BString::operator<(const BString &string) const
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{
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return strcmp(String(), string.String()) < 0;
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}
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inline bool
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BString::operator<=(const BString &string) const
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{
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return strcmp(String(), string.String()) <= 0;
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}
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inline bool
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BString::operator>=(const BString &string) const
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{
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return strcmp(String(), string.String()) >= 0;
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}
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inline bool
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BString::operator>(const BString &string) const
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{
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return strcmp(String(), string.String()) > 0;
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}
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inline bool
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BString::operator!=(const BString &string) const
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{
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return strcmp(String(), string.String()) != 0;
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}
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inline bool
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BString::operator!=(const char *str) const
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{
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return !operator==(str);
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}
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inline bool
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operator<(const char *str, const BString &string)
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{
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return string > str;
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}
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inline bool
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operator<=(const char *str, const BString &string)
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{
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return string >= str;
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}
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inline bool
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operator==(const char *str, const BString &string)
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{
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return string == str;
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}
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inline bool
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operator>(const char *str, const BString &string)
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{
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return string < str;
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}
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inline bool
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operator>=(const char *str, const BString &string)
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{
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return string <= str;
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}
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inline bool
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operator!=(const char *str, const BString &string)
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{
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return string != str;
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}
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#endif /* __BSTRING__ */
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