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| Rev | Author | Line No. | Line |
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| 2 | daniel-mar | 1 | library CurConv; |
| 2 | |||
| 3 | uses |
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| 4 | SysUtils, |
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| 5 | Classes, |
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| 6 | Windows, |
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| 7 | Dialogs, |
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| 8 | Controls, |
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| 9 | uLkJSON in '..\RTL\uLkJSON.pas', |
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| 10 | VtsCurConv in '..\RTL\VtsCurConv.pas'; |
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| 11 | |||
| 12 | {$R *.res} |
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| 13 | |||
| 14 | type |
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| 15 | TVtsCurConvFlags = type DWORD; |
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| 16 | |||
| 17 | const |
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| 18 | CONVERT_DONT_SHOW_ERRORS: TVtsCurConvFlags = 1; |
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| 19 | CONVERT_FALLBACK_TO_CACHE: TVtsCurConvFlags = 2; |
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| 20 | CONVERT_USE_SSL: TVtsCurConvFlags = 4; |
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| 21 | CONVERT_CONFIRM_WEB_ACCESS: TVtsCurConvFlags = 8; |
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| 22 | CONVERT_NO_INTERACTIVE_API_KEY_INPUT: TVtsCurConvFlags = 16; |
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| 23 | |||
| 24 | const |
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| 25 | S_VTSCONV_OK: HRESULT = $20000000; // Success, Customer defined, Facility 0, Code 0 |
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| 26 | S_VTSCONV_NOTHING: HRESULT = $20000001; // Success, Customer defined, Facility 0, Code 1 |
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| 27 | E_VTSCONV_GENERIC_FAILURE: HRESULT = $A0000000; // Failure, Customer defined, Facility 0, Code 0 |
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| 28 | E_VTSCONV_BAD_ARGS: HRESULT = $A0000001; // Failure, Customer defined, Facility 0, Code 1 |
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| 29 | E_VTSCONV_STOREDKEY_INVALID: HRESULT = $A0000002; // Failure, Customer defined, Facility 0, Code 2 |
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| 30 | E_VTSCONV_NO_STOREDKEY: HRESULT = $A0000003; // Failure, Customer defined, Facility 0, Code 3 |
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| 31 | |||
| 32 | function DeleteAPIKey(UserMode: BOOL; DontShowErrors: BOOL): HRESULT; stdcall; |
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| 33 | begin |
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| 34 | try |
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| 35 | if TVtsCurConv.DeleteAPIKey(UserMode) then |
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| 36 | result := S_VTSCONV_OK |
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| 37 | else |
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| 38 | result := S_VTSCONV_NOTHING; |
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| 39 | except |
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| 40 | on E: Exception do |
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| 41 | begin |
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| 42 | if DontShowErrors then MessageDlg(e.Message, mtError, [mbOk], 0); |
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| 43 | result := E_VTSCONV_GENERIC_FAILURE; |
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| 44 | end; |
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| 45 | end; |
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| 46 | end; |
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| 47 | |||
| 48 | function WriteAPIKeyW(key: LPCWSTR; UserMode: BOOL; DontShowErrors: BOOL): HRESULT; stdcall; |
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| 49 | begin |
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| 50 | try |
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| 51 | if Length(key) <> 32 then |
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| 52 | begin |
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| 53 | result := E_VTSCONV_BAD_ARGS; |
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| 54 | Exit; |
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| 55 | end; |
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| 56 | TVtsCurConv.WriteAPIKey(TVtsCurApiKey(key), UserMode); |
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| 57 | result := S_VTSCONV_OK; |
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| 58 | except |
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| 59 | on E: Exception do |
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| 60 | begin |
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| 61 | if DontShowErrors then MessageDlg(e.Message, mtError, [mbOk], 0); |
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| 62 | result := E_VTSCONV_GENERIC_FAILURE; |
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| 63 | end; |
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| 64 | end; |
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| 65 | end; |
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| 66 | |||
| 67 | function WriteAPIKeyA(key: LPCSTR; UserMode: BOOL; DontShowErrors: BOOL): HRESULT; stdcall; |
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| 68 | begin |
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| 69 | try |
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| 70 | if Length(key) <> 32 then |
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| 71 | begin |
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| 72 | result := E_VTSCONV_BAD_ARGS; |
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| 73 | Exit; |
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| 74 | end; |
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| 75 | TVtsCurConv.WriteAPIKey(TVtsCurApiKey(key), UserMode); |
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| 76 | result := S_VTSCONV_OK; |
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| 77 | except |
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| 78 | on E: Exception do |
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| 79 | begin |
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| 80 | if DontShowErrors then MessageDlg(e.Message, mtError, [mbOk], 0); |
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| 81 | result := E_VTSCONV_GENERIC_FAILURE; |
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| 82 | end; |
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| 83 | end; |
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| 84 | end; |
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| 85 | |||
| 86 | function ReadAPIKeyW(key: LPWSTR; DontShowErrors: BOOL): HRESULT; stdcall; |
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| 87 | var |
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| 88 | s: WideString; |
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| 89 | begin |
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| 90 | try |
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| 91 | s := WideString(TVtsCurConv.ReadAPIKey); |
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| 92 | if s = '' then |
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| 93 | begin |
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| 94 | result := E_VTSCONV_NO_STOREDKEY; |
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| 95 | Exit; |
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| 96 | end; |
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| 97 | if Length(s) <> 32 then |
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| 98 | begin |
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| 99 | result := E_VTSCONV_STOREDKEY_INVALID; |
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| 100 | Exit; |
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| 101 | end; |
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| 102 | ZeroMemory(key, 33*SizeOf(WideChar)); |
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| 103 | CopyMemory(key, @s[1], 32*SizeOf(WideChar)); |
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| 104 | Result := S_VTSCONV_OK; |
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| 105 | except |
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| 106 | on E: Exception do |
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| 107 | begin |
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| 108 | if DontShowErrors then MessageDlg(e.Message, mtError, [mbOk], 0); |
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| 109 | result := E_VTSCONV_GENERIC_FAILURE; |
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| 110 | end; |
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| 111 | end; |
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| 112 | end; |
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| 113 | |||
| 114 | function ReadAPIKeyA(key: LPSTR; DontShowErrors: BOOL): HRESULT; stdcall; |
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| 115 | var |
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| 116 | s: AnsiString; |
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| 117 | begin |
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| 118 | try |
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| 119 | s := AnsiString(TVtsCurConv.ReadAPIKey); |
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| 120 | if s = '' then |
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| 121 | begin |
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| 122 | result := E_VTSCONV_NO_STOREDKEY; |
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| 123 | Exit; |
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| 124 | end; |
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| 125 | if Length(s) <> 32 then |
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| 126 | begin |
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| 127 | result := E_VTSCONV_STOREDKEY_INVALID; |
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| 128 | Exit; |
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| 129 | end; |
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| 130 | ZeroMemory(key, 33*SizeOf(AnsiChar)); |
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| 131 | CopyMemory(key, @s[1], 32*SizeOf(AnsiChar)); |
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| 132 | result := S_VTSCONV_OK; |
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| 133 | except |
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| 134 | on E: Exception do |
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| 135 | begin |
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| 136 | if DontShowErrors then MessageDlg(e.Message, mtError, [mbOk], 0); |
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| 137 | result := E_VTSCONV_GENERIC_FAILURE; |
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| 138 | end; |
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| 139 | end; |
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| 140 | end; |
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| 141 | |||
| 142 | function ConvertW(Value: Double; CurFrom, CurTo: LPCWSTR; MaxAge: integer; |
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| 143 | Flags: TVtsCurConvFlags; HistoricDate: TDate): Double; stdcall; |
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| 144 | var |
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| 145 | x: TVtsCurConv; |
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| 146 | begin |
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| 147 | try |
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| 148 | x := TVtsCurConv.Create; |
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| 149 | try |
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| 150 | x.Secure := Flags and CONVERT_USE_SSL <> 0; |
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| 151 | x.MaxAgeSeconds := MaxAge; |
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| 152 | x.ConfirmWebAccess := Flags and CONVERT_CONFIRM_WEB_ACCESS <> 0; |
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| 153 | x.FallBackToCache := Flags and CONVERT_FALLBACK_TO_CACHE <> 0; |
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| 154 | x.InteractiveAPIKeyInput := Flags and CONVERT_NO_INTERACTIVE_API_KEY_INPUT = 0; |
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| 155 | result := x.Convert(value, TVtsCur(CurFrom), TVtsCur(CurTo), HistoricDate); |
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| 156 | finally |
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| 157 | x.Free; |
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| 158 | end; |
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| 159 | except |
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| 160 | on E: Exception do |
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| 161 | begin |
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| 162 | if Flags and CONVERT_DONT_SHOW_ERRORS = 0 then MessageDlg(e.Message, mtError, [mbOk], 0); |
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| 163 | result := -1; |
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| 164 | end; |
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| 165 | end; |
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| 166 | end; |
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| 167 | |||
| 168 | function ConvertA(Value: Double; CurFrom, CurTo: LPCSTR; MaxAge: integer; |
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| 169 | Flags: TVtsCurConvFlags; HistoricDate: TDate): Double; stdcall; |
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| 170 | var |
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| 171 | x: TVtsCurConv; |
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| 172 | begin |
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| 173 | try |
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| 174 | x := TVtsCurConv.Create; |
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| 175 | try |
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| 176 | x.Secure := Flags and CONVERT_USE_SSL <> 0; |
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| 177 | x.MaxAgeSeconds := MaxAge; |
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| 178 | x.ConfirmWebAccess := Flags and CONVERT_CONFIRM_WEB_ACCESS <> 0; |
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| 179 | x.FallBackToCache := Flags and CONVERT_FALLBACK_TO_CACHE <> 0; |
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| 180 | x.InteractiveAPIKeyInput := Flags and CONVERT_NO_INTERACTIVE_API_KEY_INPUT = 0; |
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| 181 | result := x.Convert(value, TVtsCur(CurFrom), TVtsCur(CurTo), HistoricDate); |
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| 182 | finally |
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| 183 | x.Free; |
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| 184 | end; |
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| 185 | except |
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| 186 | on E: Exception do |
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| 187 | begin |
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| 188 | if Flags and CONVERT_DONT_SHOW_ERRORS = 0 then MessageDlg(e.Message, mtError, [mbOk], 0); |
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| 189 | result := -1; |
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| 190 | end; |
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| 191 | end; |
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| 192 | end; |
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| 193 | |||
| 194 | function AcceptedCurrenciesW(WriteTo: LPWSTR; MaxAge: integer; Flags: TVtsCurConvFlags; |
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| 195 | HistoricDate: TDate): Integer; stdcall; |
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| 196 | var |
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| 197 | x: TVtsCurConv; |
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| 198 | sl: TStringList; |
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| 199 | s: WideString; |
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| 200 | i: integer; |
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| 201 | begin |
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| 202 | try |
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| 203 | x := TVtsCurConv.Create; |
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| 204 | if Assigned(WriteTo) then sl := TStringList.Create else sl := nil; |
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| 205 | try |
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| 206 | x.Secure := Flags and CONVERT_USE_SSL <> 0; |
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| 207 | x.MaxAgeSeconds := MaxAge; |
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| 208 | x.ConfirmWebAccess := Flags and CONVERT_CONFIRM_WEB_ACCESS <> 0; |
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| 209 | x.FallBackToCache := Flags and CONVERT_FALLBACK_TO_CACHE <> 0; |
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| 210 | x.InteractiveAPIKeyInput := Flags and CONVERT_NO_INTERACTIVE_API_KEY_INPUT = 0; |
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| 211 | result := x.GetAcceptedCurrencies(sl, HistoricDate); |
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| 212 | if Assigned(WriteTo) then |
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| 213 | begin |
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| 214 | s := ''; |
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| 13 | daniel-mar | 215 | for i := 0 to sl.Count - 1 do s := s + WideString(Trim(sl.Strings[i])); |
| 2 | daniel-mar | 216 | ZeroMemory(WriteTo, (3*result+1)*SizeOf(WideChar)); |
| 217 | CopyMemory(WriteTo, @s[1], 3*result*SizeOf(WideChar)); |
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| 218 | end; |
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| 219 | finally |
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| 220 | x.Free; |
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| 221 | if Assigned(WriteTo) then sl.Free; |
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| 222 | end; |
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| 223 | except |
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| 224 | on E: Exception do |
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| 225 | begin |
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| 226 | if Flags and CONVERT_DONT_SHOW_ERRORS = 0 then MessageDlg(e.Message, mtError, [mbOk], 0); |
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| 227 | result := -1; |
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| 228 | end; |
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| 229 | end; |
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| 230 | end; |
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| 231 | |||
| 232 | function AcceptedCurrenciesA(WriteTo: LPSTR; MaxAge: integer; Flags: TVtsCurConvFlags; |
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| 233 | HistoricDate: TDate): Integer; stdcall; |
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| 234 | var |
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| 235 | x: TVtsCurConv; |
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| 236 | sl: TStringList; |
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| 237 | s: AnsiString; |
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| 238 | i: integer; |
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| 239 | begin |
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| 240 | try |
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| 241 | x := TVtsCurConv.Create; |
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| 242 | if Assigned(WriteTo) then sl := TStringList.Create else sl := nil; |
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| 243 | try |
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| 244 | x.Secure := Flags and CONVERT_USE_SSL <> 0; |
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| 245 | x.MaxAgeSeconds := MaxAge; |
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| 246 | x.ConfirmWebAccess := Flags and CONVERT_CONFIRM_WEB_ACCESS <> 0; |
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| 247 | x.FallBackToCache := Flags and CONVERT_FALLBACK_TO_CACHE <> 0; |
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| 248 | x.InteractiveAPIKeyInput := Flags and CONVERT_NO_INTERACTIVE_API_KEY_INPUT = 0; |
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| 249 | result := x.GetAcceptedCurrencies(sl, HistoricDate); |
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| 250 | if Assigned(WriteTo) then |
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| 251 | begin |
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| 252 | s := ''; |
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| 13 | daniel-mar | 253 | for i := 0 to sl.Count - 1 do s := s + AnsiString(Trim(sl.Strings[i])); |
| 2 | daniel-mar | 254 | ZeroMemory(WriteTo, (3*result+1)*SizeOf(AnsiChar)); |
| 255 | CopyMemory(WriteTo, @s[1], 3*result*SizeOf(AnsiChar)); |
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| 256 | end; |
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| 257 | finally |
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| 258 | x.Free; |
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| 259 | if Assigned(WriteTo) then sl.Free; |
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| 260 | end; |
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| 261 | except |
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| 262 | on E: Exception do |
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| 263 | begin |
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| 264 | if Flags and CONVERT_DONT_SHOW_ERRORS = 0 then MessageDlg(e.Message, mtError, [mbOk], 0); |
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| 265 | result := -1; |
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| 266 | end; |
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| 267 | end; |
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| 268 | end; |
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| 269 | |||
| 270 | function DownloadNow(Flags: TVtsCurConvFlags; HistoricDate: TDate): HRESULT; stdcall; |
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| 271 | var |
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| 272 | x: TVtsCurConv; |
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| 273 | begin |
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| 274 | try |
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| 275 | x := TVtsCurConv.Create; |
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| 276 | try |
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| 277 | x.Secure := Flags and CONVERT_USE_SSL <> 0; |
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| 278 | x.MaxAgeSeconds := 0; // Always Download |
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| 279 | x.ConfirmWebAccess := Flags and CONVERT_CONFIRM_WEB_ACCESS <> 0; |
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| 280 | x.FallBackToCache := Flags and CONVERT_FALLBACK_TO_CACHE <> 0; |
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| 281 | x.InteractiveAPIKeyInput := Flags and CONVERT_NO_INTERACTIVE_API_KEY_INPUT = 0; |
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| 282 | x.Convert(1, 'USD', 'USD', HistoricDate); |
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| 283 | result := S_VTSCONV_OK |
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| 284 | finally |
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| 285 | x.Free; |
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| 286 | end; |
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| 287 | except |
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| 288 | on E: Exception do |
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| 289 | begin |
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| 290 | if Flags and CONVERT_DONT_SHOW_ERRORS = 0 then MessageDlg(e.Message, mtError, [mbOk], 0); |
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| 291 | result := E_VTSCONV_GENERIC_FAILURE; |
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| 292 | end; |
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| 293 | end; |
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| 294 | end; |
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| 295 | |||
| 296 | exports |
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| 297 | DeleteAPIKey, |
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| 298 | WriteAPIKeyW, |
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| 299 | WriteAPIKeyA, |
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| 300 | ReadAPIKeyW, |
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| 301 | ReadAPIKeyA, |
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| 302 | ConvertW, |
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| 303 | ConvertA, |
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| 304 | AcceptedCurrenciesW, |
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| 305 | AcceptedCurrenciesA, |
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| 306 | DownloadNow; |
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| 307 | |||
| 308 | begin |
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| 309 | end. |