static void Job_File_IO_TextIo_Write_Read(Args _args) { TextIo txIoRead, txIoWrite; FileIOPermission fioPermission; container containFromRead; int xx, iConLength; str sTempPath, sFileName = "Test_File_IO.txt", sOneRecord; ; // Get the temporary path. sTempPath = WINAPI::getTempPath(); info("File is at: " + sTempPath + sFileName); // Assert permission. fioPermission = new FileIOPermission (sTempPath + sFileName ,"RW"); fioPermission.assert(); // If the test file already exists, delete it. if (WINAPI::fileExists(sFileName)) { WINAPI::deleteFile(sTempPath + sFileName); } // Open a test file for writing. // "W" mode overwrites existing content, or creates the file. txIoWrite = new TextIo( sTempPath + sFileName ,"W"); // Write records to the file. txIoWrite.write("Hello World."); txIoWrite.write("The sky is blue."); txIoWrite.write(""); txIoWrite.write("// EOFile"); // Close the test file. txIoRead = null; // Open the same file for reading. txIoRead = new TextIo(sTempPath + sFileName ,"R"); // Read the entire file into a container. containFromRead = txIoRead.read(); // Loop through the container of file records. while (containFromRead) { sOneRecord = ""; iConLength = conLen(containFromRead); // Loop through the token in the current record. for (xx=1; xx <= iConLength; xx++) { if (xx > 1) sOneRecord += " "; sOneRecord += conPeek(containFromRead ,xx); } info(sOneRecord); // Read the next record from the container. containFromRead = txIoRead.read(); } // Close the test file. txIoRead = null; // Delete the test file. WINAPI::deleteFile(sTempPath + sFileName); // revertAssert is not really necessary here, // because the job (or method) is ending. CodeAccessPermission::revertAssert(); }
Performing File IO with the TextIo Class [AX 2012]
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