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90 lines
2.6 KiB
C++
90 lines
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#ifndef _C_UTILS_H_
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#define _C_UTILS_H_
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#include "Pool.h"
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/* This file is intended to be a repository for C/C++ utils that
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* are reimplemented because the standard C routines are unsuitable
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* for some reason (not thread-safe, not available on all platforms)
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* and NSPR does not have them.
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*/
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/* Performs the work done by the standard C routine strtok; like
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* strtok, it mangles the original string. Use it as follows:
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* const char *stringToBeBrokenUp;
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* Strtok tok(stringToBeBrokenUp);
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* for (const char *token = tok.get(pattern); token;
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* token = tok.get(pattern))
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* use tok;
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*/
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class Strtok {
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public:
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/* string is a sequence of zero or more text tokens separated
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* by spans of one or more characters in a pattern string.
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*/
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Strtok(char *string) : string(string) { }
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/* returns a pointer to the first character of the next
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* "token" in the string separated by one of the characters
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* in pattern, NULL if there are no nore tokens.
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*/
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char *get(const char *pattern);
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private:
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/* The candidate string */
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char *string;
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};
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/* duplicate the string, using the Pool provided to alloc memory */
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char *dupString(const char *str, Pool &pool);
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/* Append t to s, whose initial size (not length) is strSize. Grows s if
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* necessary; on success, returns the updated s and sets strSize to
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* the new size of the string.
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*/
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char *append(char *&s, Uint32 &strSize, const char *t);
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/* Class that houses a file descriptor and closes the file on exit */
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#include "prio.h"
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class FileDesc {
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private:
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PRFileDesc *fp;
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public:
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FileDesc(const char *fileName, PRWord flags, PRWord mode) {
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fp = PR_Open(fileName, flags, mode);
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}
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void close() { if (fp) PR_Close(fp); fp = 0; }
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~FileDesc() { close(); }
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operator PRFileDesc * (void) { return fp; }
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};
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#endif /* _C_UTILS_H_ */
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