wxapkg.bt

// Define structures to parse program of weixin

local int warnings = 0;
local string temp_warning;

// A hack to get warning messages to both "Warn" (show in status) and output to the "output" window
void PrintWarning(string message) {
    Warning(temp_warning);

    // Ensure new-line, "Warning" statuses should not have them
    SPrintf(temp_warning, "%s\n", message);
    Printf(temp_warning);

    // Hack to trigger a more generic "look at warnings in output"
    warnings++;
}

//struct of dataIndex
typedef struct{
	int fileNameLen <comment="length of filename">;
	char fileName[fileNameLen] <comment="file name">;
	int fileOffset <comment="file offset">;
	int fileLen <comment="file size">;
} dataIndex_table <read=DataIndexName, optimize=false>;

string DataIndexName(dataIndex_table &dataIndex){
	return dataIndex.fileName;
}


struct {
    BigEndian();
	struct {
		byte magic1 <comment="magic number 1, should be -66">;
		int  unknow <comment="unknow">;
		int  offsetLen <comment="offsetLen">;
		int  bodyDataLen <comment="bodyDataLen">;
		byte magic2 <comment="magic number 2, should be -19">;
		int  fileCount <comment="file count">;

		if(magic1 != -66 || magic2 != -19){
			PrintWarning("Invalid wxapkg file");
        return -1;
		}
	} header;

	local quad dataIndex_offset = 1 + 4 + 4 + 4 + 1 + 4;

	if(file.header.fileCount > 0){
		FSeek(dataIndex_offset);
        struct{
		    dataIndex_table dataIndex_table_element[file.header.fileCount];
        }data_header_table;
	}

}file;


// It's not really useful to see just the last warning, so inform us how many warnings we should see in output
if(warnings > 1) {
    Warning("%d warnings have occured and logged to the output box!", warnings);
}

// This will make the template show "Template executed successfully."
if(warnings != 0) {
    SPrintf(temp_warning, "%d warnings found, template may not have run successfully!", warnings);
    return temp_warning;
}