| 100 | } |
| 101 | |
| 102 | bool OpenPatchedFile(HANDLE hMpq, const char * szFileName, HANDLE * PtrFile) |
| 103 | { |
| 104 | TMPQArchive * haBase = NULL; |
| 105 | TMPQArchive * ha = (TMPQArchive *)hMpq; |
| 106 | TFileEntry * pFileEntry; |
| 107 | TMPQFile * hfPatch; // Pointer to patch file |
| 108 | TMPQFile * hfBase = NULL; // Pointer to base open file |
| 109 | TMPQFile * hf = NULL; |
| 110 | HANDLE hPatchFile; |
| 111 | char szNameBuffer[MAX_PATH]; |
| 112 | |
| 113 | // First of all, find the latest archive where the file is in base version |
| 114 | // (i.e. where the original, unpatched version of the file exists) |
| 115 | while(ha != NULL) |
| 116 | { |
| 117 | // If the file is there, then we remember the archive |
| 118 | pFileEntry = GetFileEntryExact(ha, GetPatchFileName(ha, szFileName, szNameBuffer), 0, NULL); |
| 119 | if(pFileEntry != NULL && (pFileEntry->dwFlags & MPQ_FILE_PATCH_FILE) == 0) |
| 120 | haBase = ha; |
| 121 | |
| 122 | // Move to the patch archive |
| 123 | ha = ha->haPatch; |
| 124 | } |
| 125 | |
| 126 | // If we couldn't find the base file in any of the patches, it doesn't exist |
| 127 | if((ha = haBase) == NULL) |
| 128 | { |
| 129 | SetLastError(ERROR_FILE_NOT_FOUND); |
| 130 | return false; |
| 131 | } |
| 132 | |
| 133 | // Now open the base file |
| 134 | if(SFileOpenFileEx((HANDLE)ha, GetPatchFileName(ha, szFileName, szNameBuffer), SFILE_OPEN_BASE_FILE, (HANDLE *)&hfBase)) |
| 135 | { |
| 136 | // The file must be a base file, i.e. without MPQ_FILE_PATCH_FILE |
| 137 | assert((hfBase->pFileEntry->dwFlags & MPQ_FILE_PATCH_FILE) == 0); |
| 138 | hf = hfBase; |
| 139 | |
| 140 | // Now open all patches and attach them on top of the base file |
| 141 | for(ha = ha->haPatch; ha != NULL; ha = ha->haPatch) |
| 142 | { |
| 143 | // Prepare the file name with a correct prefix |
| 144 | if(SFileOpenFileEx((HANDLE)ha, GetPatchFileName(ha, szFileName, szNameBuffer), SFILE_OPEN_BASE_FILE, &hPatchFile)) |
| 145 | { |
| 146 | // Remember the new version |
| 147 | hfPatch = (TMPQFile *)hPatchFile; |
| 148 | |
| 149 | // We should not find patch file |
| 150 | assert((hfPatch->pFileEntry->dwFlags & MPQ_FILE_PATCH_FILE) != 0); |
| 151 | |
| 152 | // Attach the patch to the base file |
| 153 | hf->hfPatch = hfPatch; |
| 154 | hf = hfPatch; |
| 155 | } |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | // Give the updated base MPQ |
no test coverage detected