/* * Copyright (C) 2005 The Android Open Source Project * * Licensed 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 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ // // Handy utility functions and portability code. // #ifndef _LIBS_UTILS_MISC_H #define _LIBS_UTILS_MISC_H #include <sys/time.h> #include <utils/Endian.h> namespace android { /* get #of elements in a static array */ #ifndef NELEM # define NELEM(x) ((int) (sizeof(x) / sizeof((x)[0]))) #endif /* * Make a copy of the string, using "new[]" instead of "malloc". Free the * string with delete[]. * * Returns NULL if "str" is NULL. */ char* strdupNew(const char* str); /* * Concatenate an argument vector into a single string. If argc is >= 0 * it will be used; if it's < 0 then the last element in the arg vector * must be NULL. * * This inserts a space between each argument. * * This does not automatically add double quotes around arguments with * spaces in them. This practice is necessary for Win32, because Win32's * CreateProcess call is stupid. * * The caller should delete[] the returned string. */ char* concatArgv(int argc, const char* const argv[]); /* * Count up the number of arguments in "argv". The count does not include * the final NULL entry. */ int countArgv(const char* const argv[]); /* * Some utility functions for working with files. These could be made * part of a "File" class. */ typedef enum FileType { kFileTypeUnknown = 0, kFileTypeNonexistent, // i.e. ENOENT kFileTypeRegular, kFileTypeDirectory, kFileTypeCharDev, kFileTypeBlockDev, kFileTypeFifo, kFileTypeSymlink, kFileTypeSocket, } FileType; /* get the file's type; follows symlinks */ FileType getFileType(const char* fileName); /* get the file's modification date; returns -1 w/errno set on failure */ time_t getFileModDate(const char* fileName); /* * Round up to the nearest power of 2. Handy for hash tables. */ unsigned int roundUpPower2(unsigned int val); void strreverse(char* begin, char* end); void k_itoa(int value, char* str, int base); char* itoa(int val, int base); }; // namespace android #endif // _LIBS_UTILS_MISC_H