path: root/tvapi/libtv/tvutils/CFile.cpp (plain)
blob: a0b523a434ca3a78b787026a4b3cbe1bdff4e2a6

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	ret = read(mFd, pBuf, uLen);
71	}
72	return ret;
73	}
74
75	int CFile::copyTo(const char *dstPath)
76	{
77	if (strlen(mPath) <= 0)
78	return -1;
79	int dstFd;
80	if (mFd == -1) {
81	if ((mFd = open(mPath, O_RDONLY)) == -1) {
82	LOGE("Open %s Error:%s/n", mPath, strerror(errno));
83	return -1;
84	}
85	}
86
87	if ((dstFd = open(dstPath, O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR)) == -1) {
88	LOGE("Open %s Error:%s/n", dstPath, strerror(errno));
89	}
90
91	int bytes_read, bytes_write;
92	char buffer[BUFFER_SIZE];
93	char *ptr;
94	int ret = 0;
95	while (bytes_read = read(mFd, buffer, BUFFER_SIZE)) {
96	/* 一个致命的错误发生了 */
97	if ((bytes_read == -1) && (errno != EINTR)) {
98	ret = -1;
99	break;
100	} else if (bytes_read > 0) {
101	ptr = buffer;
102	while (bytes_write = write(dstFd, ptr, bytes_read)) {
103	/* 一个致命错误发生了 */
104	if ((bytes_write == -1) && (errno != EINTR)) {
105	ret = -1;
106	break;
107	}
108	/* 写完了所有读的字节 */
109	else if (bytes_write == bytes_read) {
110	ret = 0;
111	break;
112	}
113	/* 只写了一部分,继续写 */
114	else if (bytes_write > 0) {
115	ptr += bytes_write;
116	bytes_read -= bytes_write;
117	}
118	}
119	/* 写的时候发生的致命错误 */
120	if (bytes_write == -1) {
121	ret = -1;
122	break;
123	}
124	}
125	}
126	fsync(dstFd);
127	close(dstFd);
128	return ret;
129	}
130
131
132	int CFile::delFile(const char *path)
133	{
134	if (strlen(path) <= 0) return -1;
135	if (unlink(path) != 0) {
136	LOGD("delete file(%s) err=%s", path, strerror(errno));
137	return -1;
138	}
139	return 0;
140	}
141
142	int CFile::delFile()
143	{
144	if (strlen(mPath) <= 0) return -1;
145	if (unlink(mPath) != 0) {
146	LOGD("delete file(%s) err=%s", mPath, strerror(errno));
147	return -1;
148	}
149	return 0;
150	}
151
152
153	int CFile::getFileAttrValue(const char *path)
154	{
155	int value;
156
157	int fd = open(path, O_RDONLY);
158	if (fd <= 0) {
159	LOGE("open (%s)ERROR!!error = -%s- \n", path, strerror ( errno ));
160	}
161	char s[8];
162	read(fd, s, sizeof(s));
163	close(fd);
164	value = atoi(s);
165	return value;
166	}
167
168	int CFile::setFileAttrValue(const char *path, int value)
169	{
170	FILE *fp = fopen ( path, "w" );
171
172	if ( fp == NULL ) {
173	LOGW ( "Open %s error(%s)!\n", path, strerror ( errno ) );
174	return -1;
175	}
176	fprintf ( fp, "%d", value );
177	fclose ( fp );
178	return 0;
179	}
180
181	int CFile::getFileAttrStr(const char *path, char *str)
182	{
183	return 0;
184	}
185
186	int CFile::setFileAttrStr(const char *path, const char *str)
187	{
188	FILE *fp = fopen ( path, "w" );
189
190	if ( fp == NULL ) {
191	LOGW ( "Open %s error(%s)!\n", path, strerror ( errno ) );
192	return -1;
193	}
194	fprintf ( fp, "%s", str );
195	fclose ( fp );
196	return 0;
197	}
198