path: root/tvapi/libtv/tvutils/CFile.cpp (plain)
blob: af850af0e4df2122562a0f1d7669a20fd3cf001c

1	#define LOG_TAG "CFILE"
2
3	#include "CFile.h"
4	#include "CTvLog.h"
5
6	#include <stdlib.h>
7
8	CFile::CFile()
9	{
10	mPath[0] = '\0';
11	mFd = -1;
12	}
13
14	CFile::~CFile()
15	{
16	closeFile();
17	}
18
19	CFile::CFile(const char *path)
20	{
21	strcpy(mPath, path);
22	mFd = -1;
23	}
24
25	int CFile::openFile(const char *path)
26	{
27	LOGD("openFile = %s", path);
28
29	if (mFd < 0) {
30	if (path == NULL) {
31	if (strlen(mPath) <= 0)
32	return -1;
33
34	mFd = open(mPath, O_RDWR);//读写模式打开
35	if (mFd < 0) LOGD("open file(--%s) fail", mPath);
36	} else {
37	mFd = open(path, O_RDWR);//读写模式打开
38	LOGD("open file(%s fd=%d) ", path, mFd);
39	strcpy(mPath, path);
40	}
41	}
42
43	return mFd;
44	}
45
46	int CFile::closeFile()
47	{
48	if (mFd > 0) {
49	close(mFd);
50	mFd = -1;
51	}
52	return 0;
53	}
54
55	int CFile::writeFile(const unsigned char *pData, int uLen)
56	{
57	int ret = -1;
58	if (mFd > 0)
59	ret = write(mFd, pData, uLen);
60
61	return ret;
62	}
63
64	int CFile::readFile(void *pBuf, int uLen)
65	{
66	int ret = 0;
67	if (mFd > 0) {
68	ret = read(mFd, pBuf, uLen);
69	}
70	return ret;
71	}
72
73	int CFile::copyTo(const char *dstPath)
74	{
75	if (strlen(mPath) <= 0)
76	return -1;
77	int dstFd;
78	if (mFd == -1) {
79	if ((mFd = open(mPath, O_RDONLY)) == -1) {
80	LOGE("Open %s Error:%s/n", mPath, strerror(errno));
81	return -1;
82	}
83	}
84
85	if ((dstFd = open(dstPath, O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR)) == -1) {
86	LOGE("Open %s Error:%s/n", dstPath, strerror(errno));
87	}
88
89	int bytes_read, bytes_write;
90	char buffer[BUFFER_SIZE];
91	char *ptr;
92	int ret = 0;
93	while ((bytes_read = read(mFd, buffer, BUFFER_SIZE))) {
94	/* 一个致命的错误发生了 */
95	if ((bytes_read == -1) && (errno != EINTR)) {
96	ret = -1;
97	break;
98	} else if (bytes_read > 0) {
99	ptr = buffer;
100	while ((bytes_write = write(dstFd, ptr, bytes_read))) {
101	/* 一个致命错误发生了 */
102	if ((bytes_write == -1) && (errno != EINTR)) {
103	ret = -1;
104	break;
105	}
106	/* 写完了所有读的字节 */
107	else if (bytes_write == bytes_read) {
108	ret = 0;
109	break;
110	}
111	/* 只写了一部分,继续写 */
112	else if (bytes_write > 0) {
113	ptr += bytes_write;
114	bytes_read -= bytes_write;
115	}
116	}
117	/* 写的时候发生的致命错误 */
118	if (bytes_write == -1) {
119	ret = -1;
120	break;
121	}
122	}
123	}
124	fsync(dstFd);
125	close(dstFd);
126	return ret;
127	}
128
129
130	int CFile::delFile(const char *path)
131	{
132	if (strlen(path) <= 0) return -1;
133	if (unlink(path) != 0) {
134	LOGD("delete file(%s) err=%s", path, strerror(errno));
135	return -1;
136	}
137	return 0;
138	}
139
140	int CFile::delFile()
141	{
142	if (strlen(mPath) <= 0) return -1;
143	if (unlink(mPath) != 0) {
144	LOGD("delete file(%s) err=%s", mPath, strerror(errno));
145	return -1;
146	}
147	return 0;
148	}
149
150
151	int CFile::getFileAttrValue(const char *path)
152	{
153	int value;
154
155	int fd = open(path, O_RDONLY);
156	if (fd <= 0) {
157	LOGE("open (%s)ERROR!!error = -%s- \n", path, strerror ( errno ));
158	}
159	char s[8];
160	read(fd, s, sizeof(s));
161	close(fd);
162	value = atoi(s);
163	return value;
164	}
165
166	int CFile::setFileAttrValue(const char *path, int value)
167	{
168	FILE *fp = fopen ( path, "w" );
169
170	if ( fp == NULL ) {
171	LOGW ( "Open %s error(%s)!\n", path, strerror ( errno ) );
172	return -1;
173	}
174	fprintf ( fp, "%d", value );
175	fclose ( fp );
176	return 0;
177	}
178
179	int CFile::getFileAttrStr(const char *path __unused, char *str __unused)
180	{
181	return 0;
182	}
183
184	int CFile::setFileAttrStr(const char *path, const char *str)
185	{
186	FILE *fp = fopen ( path, "w" );
187
188	if ( fp == NULL ) {
189	LOGW ( "Open %s error(%s)!\n", path, strerror ( errno ) );
190	return -1;
191	}
192	fprintf ( fp, "%s", str );
193	fclose ( fp );
194	return 0;
195	}
196