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93 lines
2.6 KiB
C
93 lines
2.6 KiB
C
#include "windows.h"
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#include "msiquery.h"
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/* Print a debug message to the installer log file.
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* To see the debug messages, install with
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* msiexec /i pythonxy.msi /l*v python.log
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*/
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static UINT debug(MSIHANDLE hInstall, LPCSTR msg)
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{
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MSIHANDLE hRec = MsiCreateRecord(1);
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if (!hRec || MsiRecordSetStringA(hRec, 1, msg) != ERROR_SUCCESS) {
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return ERROR_INSTALL_FAILURE;
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}
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MsiProcessMessage(hInstall, INSTALLMESSAGE_INFO, hRec);
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MsiCloseHandle(hRec);
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return ERROR_SUCCESS;
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}
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/* Check whether the TARGETDIR exists and is a directory.
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* Set TargetExists appropriately.
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*/
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UINT __declspec(dllexport) __stdcall CheckDir(MSIHANDLE hInstall)
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{
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#define PSIZE 1024
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WCHAR wpath[PSIZE];
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char path[PSIZE];
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UINT result;
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DWORD size = PSIZE;
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DWORD attributes;
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result = MsiGetPropertyW(hInstall, L"TARGETDIR", wpath, &size);
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if (result != ERROR_SUCCESS)
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return result;
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wpath[size] = L'\0';
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path[size] = L'\0';
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attributes = GetFileAttributesW(wpath);
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if (attributes == INVALID_FILE_ATTRIBUTES ||
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!(attributes & FILE_ATTRIBUTE_DIRECTORY))
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{
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return MsiSetPropertyA(hInstall, "TargetExists", "0");
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} else {
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return MsiSetPropertyA(hInstall, "TargetExists", "1");
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}
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}
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/* Update the state of the REGISTRY.tcl component according to the
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* Extension and TclTk features. REGISTRY.tcl must be installed
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* if both features are installed, and must be absent otherwise.
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*/
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UINT __declspec(dllexport) __stdcall UpdateEditIDLE(MSIHANDLE hInstall)
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{
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INSTALLSTATE ext_old, ext_new, tcl_old, tcl_new, reg_new;
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UINT result;
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result = MsiGetFeatureStateA(hInstall, "Extensions", &ext_old, &ext_new);
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if (result != ERROR_SUCCESS)
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return result;
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result = MsiGetFeatureStateA(hInstall, "TclTk", &tcl_old, &tcl_new);
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if (result != ERROR_SUCCESS)
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return result;
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/* If the current state is Absent, and the user did not select
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the feature in the UI, Installer apparently sets the "selected"
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state to unknown. Update it to the current value, then. */
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if (ext_new == INSTALLSTATE_UNKNOWN)
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ext_new = ext_old;
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if (tcl_new == INSTALLSTATE_UNKNOWN)
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tcl_new = tcl_old;
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// XXX consider current state of REGISTRY.tcl?
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if (((tcl_new == INSTALLSTATE_LOCAL) ||
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(tcl_new == INSTALLSTATE_SOURCE) ||
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(tcl_new == INSTALLSTATE_DEFAULT)) &&
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((ext_new == INSTALLSTATE_LOCAL) ||
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(ext_new == INSTALLSTATE_SOURCE) ||
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(ext_new == INSTALLSTATE_DEFAULT))) {
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reg_new = INSTALLSTATE_SOURCE;
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} else {
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reg_new = INSTALLSTATE_ABSENT;
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}
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result = MsiSetComponentStateA(hInstall, "REGISTRY.tcl", reg_new);
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return result;
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}
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BOOL APIENTRY DllMain(HANDLE hModule,
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DWORD ul_reason_for_call,
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LPVOID lpReserved)
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{
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return TRUE;
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}
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