path: root/tvapi/libtv/tvutils/CFile.cpp (plain)
blob: 36a283fab4b58fb71718e8416d31d2c4cd05934b

1	#include "CFile.h"
2	#include "CTvLog.h"
3
4	#include <stdlib.h>
5	#ifdef LOG_TAG
6	#undef LOG_TAG
7	#define LOG_TAG "CFILE"
8	#endif
9
10	CFile::CFile()
11	{
12	mPath[0] = '\0';
13	mFd = -1;
14	}
15
16	CFile::~CFile()
17	{
18	closeFile();
19	}
20
21	CFile::CFile(const char *path)
22	{
23	strcpy(mPath, path);
24	mFd = -1;
25	}
26
27	int CFile::openFile(const char *path)
28	{
29	LOGD("openFile = %s", path);
30
31	if (mFd < 0) {
32	if (path == NULL) {
33	if (strlen(mPath) <= 0)
34	return -1;
35
36	mFd = open(mPath, O_RDWR);//读写模式打开
37	if (mFd < 0) LOGD("open file(--%s) fail", mPath);
38	} else {
39	mFd = open(path, O_RDWR);//读写模式打开
40	LOGD("open file(%s fd=%d) ", path, mFd);
41	strcpy(mPath, path);
42	}
43	}
44
45	return mFd;
46	}
47
48	int CFile::closeFile()
49	{
50	if (mFd > 0) {
51	close(mFd);
52	mFd = -1;
53	}
54	return 0;
55	}
56
57	int CFile::writeFile(const unsigned char *pData, int uLen)
58	{
59	int ret = -1;
60	if (mFd > 0)
61	ret = write(mFd, pData, uLen);
62
63	return ret;
64	}
65
66	int CFile::readFile(void *pBuf, int uLen)
67	{
68	int ret = 0;
69	if (mFd > 0)
70	{
71	ret = read(mFd, pBuf, uLen);
72	}
73	return ret;
74	}
75
76	int CFile::copyTo(const char *dstPath)
77	{
78	if (strlen(mPath) <= 0)
79	return -1;
80	int dstFd;
81	if (mFd == -1) {
82	if ((mFd = open(mPath, O_RDONLY)) == -1) {
83	LOGE("Open %s Error:%s/n", mPath, strerror(errno));
84	return -1;
85	}
86	}
87
88	if ((dstFd = open(dstPath, O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR)) == -1) {
89	LOGE("Open %s Error:%s/n", dstPath, strerror(errno));
90	}
91
92	int bytes_read, bytes_write;
93	char buffer[BUFFER_SIZE];
94	char *ptr;
95	int ret = 0;
96	while (bytes_read = read(mFd, buffer, BUFFER_SIZE)) {
97	/* 一个致命的错误发生了 */
98	if ((bytes_read == -1) && (errno != EINTR)) {
99	ret = -1;
100	break;
101	} else if (bytes_read > 0) {
102	ptr = buffer;
103	while (bytes_write = write(dstFd, ptr, bytes_read)) {
104	/* 一个致命错误发生了 */
105	if ((bytes_write == -1) && (errno != EINTR)) {
106	ret = -1;
107	break;
108	}
109	/* 写完了所有读的字节 */
110	else if (bytes_write == bytes_read) {
111	ret = 0;
112	break;
113	}
114	/* 只写了一部分,继续写 */
115	else if (bytes_write > 0) {
116	ptr += bytes_write;
117	bytes_read -= bytes_write;
118	}
119	}
120	/* 写的时候发生的致命错误 */
121	if (bytes_write == -1) {
122	ret = -1;
123	break;
124	}
125	}
126	}
127	fsync(dstFd);
128	close(dstFd);
129	return ret;
130	}
131
132
133	int CFile::delFile(const char *path)
134	{
135	if (strlen(path) <= 0) return -1;
136	if (unlink(path) != 0) {
137	LOGD("delete file(%s) err=%s", path, strerror(errno));
138	return -1;
139	}
140	return 0;
141	}
142
143	int CFile::delFile()
144	{
145	if (strlen(mPath) <= 0) return -1;
146	if (unlink(mPath) != 0) {
147	LOGD("delete file(%s) err=%s", mPath, strerror(errno));
148	return -1;
149	}
150	return 0;
151	}
152
153
154	int CFile::getFileAttrValue(const char *path)
155	{
156	int value;
157
158	int fd = open(path, O_RDONLY);
159	if (fd <= 0) {
160	LOGE("open (%s)ERROR!!error = -%s- \n", path, strerror ( errno ));
161	}
162	char s[8];
163	read(fd, s, sizeof(s));
164	close(fd);
165	value = atoi(s);
166	return value;
167	}
168
169	int CFile::setFileAttrValue(const char *path, int value)
170	{
171	FILE *fp = fopen ( path, "w" );
172
173	if ( fp == NULL ) {
174	LOGW ( "Open %s error(%s)!\n", path, strerror ( errno ) );
175	return -1;
176	}
177	fprintf ( fp, "%d", value );
178	fclose ( fp );
179	return 0;
180	}
181
182	int CFile::getFileAttrStr(const char *path, char *str)
183	{
184	return 0;
185	}
186
187	int CFile::setFileAttrStr(const char *path, const char *str)
188	{
189	FILE *fp = fopen ( path, "w" );
190
191	if ( fp == NULL ) {
192	LOGW ( "Open %s error(%s)!\n", path, strerror ( errno ) );
193	return -1;
194	}
195	fprintf ( fp, "%s", str );
196	fclose ( fp );
197	return 0;
198	}
199