ArchView/TPpm.cpp at master · alexx2000/ArchView · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
/////////////////////////////////////////////////////////////////////////////
//TPpm.cpp
/////////////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "TPpm.h"

/////////////////////////////////////////////////////////////////////////////
//FUNCTIONS PUBLIC
/////////////////////////////////////////////////////////////////////////////

//fayl yavlyaetsya arhivom PPM
//path - imya fayla dlya testirovaniya
//return
//	TMESSAGE_OK     - ok
//	ERROR_OPEN_FILE - oshibka otckritiya fayla
//	ERROR_READ_FILE - oshibka chteniya fayla
//	ERROR_SEEK_FILE - oshibka smesheniya fayla
//	SUDDEN_END_FILE - vnezapniy konec fayla
//	ERROR_FORMAT    - oshibka formata fayla
int TPpm::
TestFile(char* path)
{
	//obnulenie dannih
	InitialParametrs();

	//otkrit' fayl dlya chteniya
	m_h = CreateFile(path, GENERIC_READ, FILE_SHARE_READ,
			NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
	if (m_h == INVALID_HANDLE_VALUE)
		{ if (m_h) { ::CloseHandle(m_h); m_h = 0; } return TERROR_OPEN_FILE; }

	//chtenie zagolovka arhiva
	MSG = ReadArc(&m_ARC_HEAD, sizeof(m_ARC_HEAD));
	if (MSG != TMESSAGE_OK) { if (m_h) { ::CloseHandle(m_h); m_h = 0; } return MSG; }

	//proverka zagolovka arhiva
	if ((m_ARC_HEAD.SIGNATURE1 != 'P') ||
		(m_ARC_HEAD.SIGNATURE2 != 'P') ||
		(m_ARC_HEAD.SIGNATURE3 != 'M') ||
		(m_ARC_HEAD.SIGNATURE4 != 'D') ||
		(m_ARC_HEAD.SIGNATURE5 != '_') ||
		(m_ARC_HEAD.SIGNATURE6 != 'A')) MSG = TERROR_FORMAT;
	else MSG = TMESSAGE_OK;
	if (m_DetailLF == 2)
		m_LogFile->WriteMessage(m_LangMsg.SignatureArchive, MSG);
	if (MSG != TMESSAGE_OK)
		{ if (m_h) { ::CloseHandle(m_h); m_h = 0; } return MSG; }

	//zakritie fayla
	if (m_h) { ::CloseHandle(m_h); m_h = 0; }
	return TMESSAGE_OK;
}

//opredelit' parametri (info) arhiva
//path - imya fayla dlya analiza
//return
//	TTERMINATE_TRHEAD - iskustvennoe zavershenie potoka
//	TMESSAGE_OK       - ok
//	ERROR_OPEN_FILE   - oshibka otckritiya fayla
//	ERROR_READ_FILE   - oshibka chteniya fayla
//	ERROR_SEEK_FILE   - oshibka smesheniya fayla
//	SUDDEN_END_FILE   - vnezapniy konec fayla
//	ERROR_FORMAT      - oshibka formata fayla
int TPpm::
AnalyzeInfoOfArc(char* path)
{
	//otkrit' fayl dlya chteniya
	m_h = CreateFile(path, GENERIC_READ, FILE_SHARE_READ,
			NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
	if (m_h == INVALID_HANDLE_VALUE)
		{ if (m_h) { ::CloseHandle(m_h); m_h = 0; } return TERROR_OPEN_FILE; }

	//razmer fayla arhiva
	m_ArchiveSize = GetArchSize();

	int flag = 0;
	//prochitat' zagolovok sleduyushego bloka
	flag = ReadArc(&m_ARC_HEAD, sizeof(m_ARC_HEAD));
	if (flag != TMESSAGE_OK) { if (m_h) { ::CloseHandle(m_h); m_h = 0; } return MSG; }

	//esli rabochiy potok (v principe ne nujen NET CIKLA)
	if (m_BeginThread)
	{
		//procent vipolneniya raboti
		LONGLONG percent = 0;
		if (m_ArchiveSize) percent = 100 * GetArcPointer() / m_ArchiveSize;
		if (m_Percent != percent)	//chtob ne poslat' lishnie soobsheniya (oni tormozyat rabotu)
		{
			m_Percent = percent;
			::PostMessage(m_hWnd, WM_THREAD_PERCENT, 0, (LPARAM)m_Percent);
		}
		//net lis sobitiya zavershit' rabotu potoka
		if(::WaitForSingleObject(m_hEventEnd, 0) == WAIT_OBJECT_0)
		{ if (m_h) { ::CloseHandle(m_h); m_h = 0; } return TTERMINATE_THREAD; }
	}

	//proverka zagolovka arhiva
	if ((m_ARC_HEAD.SIGNATURE1 != 'P') ||
		(m_ARC_HEAD.SIGNATURE2 != 'P') ||
		(m_ARC_HEAD.SIGNATURE3 != 'M') ||
		(m_ARC_HEAD.SIGNATURE4 != 'D') ||
		(m_ARC_HEAD.SIGNATURE5 != '_') ||
		(m_ARC_HEAD.SIGNATURE6 != 'A')) MSG = TERROR_FORMAT;
	else MSG = TMESSAGE_OK;
	if (m_DetailLF == 2)
		m_LogFile->WriteMessage(m_LangMsg.BlockFile, MSG);
	if (MSG != TMESSAGE_OK)
		{ if (m_h) { ::CloseHandle(m_h); m_h = 0; } return MSG; }

	//metod sjatiya
	m_MethodPack = m_ARC_HEAD.METHOD;

	//ob'eam ispol'zuemoy pamyati
	m_MemorySize = m_ARC_HEAD.MEMORY_SIZE + 1;

	//soberem dannoe
	DWORD ORIG_SIZE;
	ORIG_SIZE = TakeDWord(
		TakeWord(m_ARC_HEAD.ORIG_SIZE1, m_ARC_HEAD.ORIG_SIZE2),
		TakeWord(m_ARC_HEAD.ORIG_SIZE3, m_ARC_HEAD.ORIG_SIZE4));

	//razmer fayla do sjatiya
	m_UnpackSizeFiles = ORIG_SIZE;

	m_NumberFiles = 1;
	//-5 konec arhiva CRC[4 BYTE] + END_ARC[1 BYTE[0x00]]
	m_PackSizeFiles = m_ArchiveSize - sizeof(m_ARC_HEAD) - 5;

	//rascheti sjatiya
	CountRatioArchiveSize();
	CountRatioPackFileSize();
	if (m_h) { ::CloseHandle(m_h); m_h = 0; }
	return TMESSAGE_OK;
}