path: root/tvapi/libtv/tvutils/CFile.cpp (plain)
blob: 60bdcdfb16c10313e8bc5d205a0bcaf142d4eb6f

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