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android_frameworks_base/drm/common/ReadWriteUtils.cpp at ics · sirdigitalpython/android_frameworks_base · GitHub
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common
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ReadWriteUtils.cpp
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common
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ReadWriteUtils.cpp
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/*
* Copyright (C) 2010 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.
*/
//
#define LOG_NDEBUG 0
#
define
LOG_TAG
"
ReadWriteUtils
"
#
include
<
utils/Log.h
>
#
include
<
ReadWriteUtils.h
>
#
include
<
sys/mman.h
>
#
include
<
sys/stat.h
>
#
include
<
sys/types.h
>
#
include
<
fcntl.h
>
#
include
<
stdio.h
>
#
include
<
stdlib.h
>
#
include
<
unistd.h
>
#
include
<
utils/String8.h
>
using
namespace
android
;
#
define
FAILURE
-
1
String8
ReadWriteUtils::readBytes
(
const
String8& filePath) {
FILE
* file =
NULL
;
file =
fopen
(filePath.
string
(),
"
r
"
);
String8
string
(
"
"
);
if
(
NULL
!= file) {
int
fd =
fileno
(file);
struct
stat
sb;
if
(
fstat
(fd, &sb) ==
0
&& sb.
st_size
>
0
) {
off64_t
length = sb.
st_size
;
char
* bytes =
new
char
[length];
if
(length ==
read
(fd, (
void
*) bytes, length)) {
string.
append
(bytes, length);
}
delete
bytes;
}
fclose
(file);
}
return
string;
}
int
ReadWriteUtils::readBytes
(
const
String8& filePath,
char
** buffer) {
FILE
* file =
NULL
;
file =
fopen
(filePath.
string
(),
"
r
"
);
off64_t
length =
0
;
if
(
NULL
!= file) {
int
fd =
fileno
(file);
struct
stat
sb;
if
(
fstat
(fd, &sb) ==
0
&& sb.
st_size
>
0
) {
length = sb.
st_size
;
*buffer =
new
char
[length];
if
(length !=
read
(fd, (
void
*) *buffer, length)) {
length =
FAILURE
;
}
}
fclose
(file);
}
return
length;
}
void
ReadWriteUtils::writeToFile
(
const
String8& filePath,
const
String8& data) {
FILE
* file =
NULL
;
file =
fopen
(filePath.
string
(),
"
w+
"
);
if
(
NULL
!= file) {
int
fd =
fileno
(file);
int
size = data.
size
();
if
(
FAILURE
!=
ftruncate
(fd, size)) {
if
(size !=
write
(fd, data.
string
(), size)) {
LOGE
(
"
Failed to write the data to: %s
"
, filePath.
string
());
}
}
fclose
(file);
}
}
void
ReadWriteUtils::appendToFile
(
const
String8& filePath,
const
String8& data) {
FILE
* file =
NULL
;
file =
fopen
(filePath.
string
(),
"
a+
"
);
if
(
NULL
!= file) {
int
fd =
fileno
(file);
int
size = data.
size
();
if
(size !=
write
(fd, data.
string
(), size)) {
LOGE
(
"
Failed to write the data to: %s
"
, filePath.
string
());
}
fclose
(file);
}
}
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