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1 /** | 1 /** |
2 * \file record.cpp Implementation of Record class. | 2 * \file record.cpp Implementation of Record class. |
3 */ | 3 */ |
4 | 4 |
5 #include "installer-lib.h" | 5 #include "installer-lib.h" |
6 #include "record.h" | 6 #include "record.h" |
7 #include "msiquery.h" | 7 #include "msiquery.h" |
8 | 8 |
9 //------------------------------------------------------------------------------
----------- | 9 //------------------------------------------------------------------------------
----------- |
10 // Record | 10 // Record |
11 //------------------------------------------------------------------------------
----------- | 11 //------------------------------------------------------------------------------
----------- |
12 Record::Record( unsigned int nFields ) | 12 Record::Record(unsigned int nFields) |
13 { | 13 { |
14 handle = MsiCreateRecord( nFields ) ; | 14 handle = MsiCreateRecord(nFields); |
15 if ( ! handle ) | 15 if (! handle) |
16 { | 16 { |
17 throw WindowsApiError( "MsiCreateRecord", 0 ) ; | 17 throw WindowsApiError("MsiCreateRecord", 0); |
18 } | 18 } |
19 } | 19 } |
20 | 20 |
21 Record::~Record() | 21 Record::~Record() |
22 { | 22 { |
23 if ( handle != 0 ) | 23 if (handle != 0) |
24 { | 24 { |
25 MsiCloseHandle( handle ) ; | 25 MsiCloseHandle(handle); |
26 } | 26 } |
27 } | 27 } |
28 | 28 |
29 void Record::OnlyNonNull() | 29 void Record::OnlyNonNull() |
30 { | 30 { |
31 if ( handle == 0 ) | 31 if (handle == 0) |
32 { | 32 { |
33 throw std::runtime_error( "Operation only permitted for non-null objects" )
; | 33 throw std::runtime_error("Operation only permitted for non-null objects"); |
34 } | 34 } |
35 } | 35 } |
36 | 36 |
37 void Record::AssignString( unsigned int fieldIndex, const char *value ) | 37 void Record::AssignString(unsigned int fieldIndex, const char* value) |
38 { | 38 { |
39 OnlyNonNull() ; | 39 OnlyNonNull(); |
40 MsiRecordSetStringA( handle, fieldIndex, value ) ; | 40 MsiRecordSetStringA(handle, fieldIndex, value); |
41 } | 41 } |
42 | 42 |
43 void Record::AssignString( unsigned int fieldIndex, const wchar_t *value ) | 43 void Record::AssignString(unsigned int fieldIndex, const wchar_t* value) |
44 { | 44 { |
45 OnlyNonNull() ; | 45 OnlyNonNull(); |
46 MsiRecordSetStringW( handle, fieldIndex, value ) ; | 46 MsiRecordSetStringW(handle, fieldIndex, value); |
47 } | 47 } |
48 | 48 |
49 /** | 49 /** |
50 * \par Implementation | 50 * \par Implementation |
51 * - MSDN [MsiRecordGetString](http://msdn.microsoft.com/en-us/library/aa37036
8%28v=vs.85%29.aspx) | 51 * - MSDN [MsiRecordGetString](http://msdn.microsoft.com/en-us/library/aa37036
8%28v=vs.85%29.aspx) |
52 */ | 52 */ |
53 std::wstring Record::ValueString( unsigned int fieldIndex ) | 53 std::wstring Record::ValueString(unsigned int fieldIndex) |
54 { | 54 { |
55 static wchar_t initialBuffer[ 1024 ] = L"" ; | 55 static wchar_t initialBuffer[1024] = L""; |
56 DWORD length = 1023 ; // one less than the buffer length to hold a terminating
null character | 56 DWORD length = 1023 ; // one less than the buffer length to hold a terminating
null character |
57 UINT x = MsiRecordGetStringW( handle, fieldIndex, initialBuffer, & length ) ; | 57 UINT x = MsiRecordGetStringW(handle, fieldIndex, initialBuffer, & length); |
58 if ( x == ERROR_SUCCESS ) | 58 if (x == ERROR_SUCCESS) |
59 { | 59 { |
60 return std::wstring( initialBuffer ) ; | 60 return std::wstring(initialBuffer); |
61 } | 61 } |
62 if ( x == ERROR_MORE_DATA ) | 62 if (x == ERROR_MORE_DATA) |
63 { | 63 { |
64 // Future: handle longer strings. | 64 // Future: handle longer strings. |
65 /* | 65 /* |
66 * The present custom action only uses this function for strings that appear
in dialog boxes. | 66 * The present custom action only uses this function for strings that appear
in dialog boxes. |
67 * A thousand characters is about a dozen lines of text, which is far more th
an enough. | 67 * A thousand characters is about a dozen lines of text, which is far more th
an enough. |
68 */ | 68 */ |
69 throw NotYetSupported( "retrieving string values longer than 1023 from a rec
ord" ) ; | 69 throw NotYetSupported("retrieving string values longer than 1023 from a reco
rd"); |
70 } | 70 } |
71 throw WindowsApiError( "MsiRecordGetStringW", x ) ; | 71 throw WindowsApiError("MsiRecordGetStringW", x); |
72 } | 72 } |
73 | 73 |
74 size_t Record::NumberOfFields() const | 74 size_t Record::NumberOfFields() const |
75 { | 75 { |
76 unsigned int x = MsiRecordGetFieldCount( handle ) ; | 76 unsigned int x = MsiRecordGetFieldCount(handle); |
77 if ( x == 0xFFFFFFFF ) | 77 if (x == 0xFFFFFFFF) |
78 { | 78 { |
79 throw WindowsApiError( "MsiRecordGetFieldCount", x, "invalid handle" ) ; | 79 throw WindowsApiError("MsiRecordGetFieldCount", x, "invalid handle"); |
80 } | 80 } |
81 return x ; | 81 return x; |
82 } | 82 } |
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