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author | The Android Open Source Project <initial-contribution@android.com> | 2008-10-21 07:00:00 -0700 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2008-10-21 07:00:00 -0700 |
commit | 54b6cfa9a9e5b861a9930af873580d6dc20f773c (patch) | |
tree | 35051494d2af230dce54d6b31c6af8fc24091316 /include/utils/misc.h | |
download | frameworks_base-54b6cfa9a9e5b861a9930af873580d6dc20f773c.zip frameworks_base-54b6cfa9a9e5b861a9930af873580d6dc20f773c.tar.gz frameworks_base-54b6cfa9a9e5b861a9930af873580d6dc20f773c.tar.bz2 |
Initial Contribution
Diffstat (limited to 'include/utils/misc.h')
-rw-r--r-- | include/utils/misc.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/include/utils/misc.h b/include/utils/misc.h new file mode 100644 index 0000000..62e84b4 --- /dev/null +++ b/include/utils/misc.h @@ -0,0 +1,93 @@ +/* + * 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 |