1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
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
|
