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