94 lines
2.6 KiB
C++
94 lines
2.6 KiB
C++
/*
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* Copyright (C) 2005 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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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//
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// Handy utility functions and portability code.
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//
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#ifndef _LIBS_UTILS_MISC_H
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#define _LIBS_UTILS_MISC_H
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#include <sys/time.h>
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#include "utils/Endian.h"
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namespace android {
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/* get #of elements in a static array */
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#ifndef NELEM
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# define NELEM(x) ((int) (sizeof(x) / sizeof((x)[0])))
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#endif
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/*
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* Make a copy of the string, using "new[]" instead of "malloc". Free the
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* string with delete[].
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*
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* Returns NULL if "str" is NULL.
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*/
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char* strdupNew(const char* str);
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/*
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* Concatenate an argument vector into a single string. If argc is >= 0
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* it will be used; if it's < 0 then the last element in the arg vector
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* must be NULL.
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*
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* This inserts a space between each argument.
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*
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* This does not automatically add double quotes around arguments with
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* spaces in them. This practice is necessary for Win32, because Win32's
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* CreateProcess call is stupid.
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*
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* The caller should delete[] the returned string.
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*/
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char* concatArgv(int argc, const char* const argv[]);
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/*
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* Count up the number of arguments in "argv". The count does not include
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* the final NULL entry.
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*/
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int countArgv(const char* const argv[]);
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/*
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* Some utility functions for working with files. These could be made
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* part of a "File" class.
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*/
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typedef enum FileType {
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kFileTypeUnknown = 0,
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kFileTypeNonexistent, // i.e. ENOENT
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kFileTypeRegular,
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kFileTypeDirectory,
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kFileTypeCharDev,
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kFileTypeBlockDev,
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kFileTypeFifo,
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kFileTypeSymlink,
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kFileTypeSocket,
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} FileType;
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/* get the file's type; follows symlinks */
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FileType getFileType(const char* fileName);
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/* get the file's modification date; returns -1 w/errno set on failure */
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time_t getFileModDate(const char* fileName);
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/*
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* Round up to the nearest power of 2. Handy for hash tables.
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*/
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unsigned int roundUpPower2(unsigned int val);
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void strreverse(char* begin, char* end);
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void k_itoa(int value, char* str, int base);
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char* itoa(int val, int base);
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}; // namespace android
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#endif // _LIBS_UTILS_MISC_H
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