2 ******************************************************************************
3 * Copyright (C) 2016 and later: Unicode, Inc. and others. *
4 * License & terms of use: http://www.unicode.org/copyright.html#License *
5 ******************************************************************************
6 ******************************************************************************
7 * Copyright (C) 1998-2005, International Business Machines Corporation and *
8 * others. All Rights Reserved. *
9 ******************************************************************************
16 #include "unicode/utypes.h"
17 #include "unicode/unistr.h"
19 #include "layout/LETypes.h"
21 #include "GUISupport.h"
22 #include "UnicodeReader.h"
24 #define BYTE(b) (((int) b) & 0xFF)
27 * Read the text from a file. The text must start with a Unicode Byte
28 * Order Mark (BOM) so that we know what order to read the bytes in.
30 const UChar *UnicodeReader::readFile(const char *fileName, GUISupport *guiSupport, int32_t &charCount)
37 char startBytes[4] = {'\xA5', '\xA5', '\xA5', '\xA5'};
38 char errorMessage[128];
40 int32_t signatureLength = 0;
42 f = fopen(fileName, "rb");
45 sprintf(errorMessage,"Couldn't open %s: %s \n", fileName, strerror(errno));
46 guiSupport->postErrorMessage(errorMessage, "Text File Error");
50 fseek(f, 0, SEEK_END);
53 fseek(f, 0, SEEK_SET);
54 fread(startBytes, sizeof(char), 4, f);
56 if (startBytes[0] == '\xFE' && startBytes[1] == '\xFF') {
59 } else if (startBytes[0] == '\xFF' && startBytes[1] == '\xFE') {
60 if (startBytes[2] == '\x00' && startBytes[3] == '\x00') {
67 } else if (startBytes[0] == '\xEF' && startBytes[1] == '\xBB' && startBytes[2] == '\xBF') {
70 } else if (startBytes[0] == '\x0E' && startBytes[1] == '\xFE' && startBytes[2] == '\xFF') {
73 } else if (startBytes[0] == '\x00' && startBytes[1] == '\x00' &&
74 startBytes[2] == '\xFE' && startBytes[3] == '\xFF') {
78 sprintf(errorMessage, "Couldn't detect the encoding of %s: (%2.2X, %2.2X, %2.2X, %2.2X)\n", fileName,
79 BYTE(startBytes[0]), BYTE(startBytes[1]), BYTE(startBytes[2]), BYTE(startBytes[3]));
80 guiSupport->postErrorMessage(errorMessage, "Text File Error");
85 fileSize -= signatureLength;
86 fseek(f, signatureLength, SEEK_SET);
87 byteBuffer = new char[fileSize];
90 sprintf(errorMessage,"Couldn't get memory for reading %s: %s \n", fileName, strerror(errno));
91 guiSupport->postErrorMessage(errorMessage, "Text File Error");
96 fread(byteBuffer, sizeof(char), fileSize, f);
98 sprintf(errorMessage,"Couldn't read %s: %s \n", fileName, strerror(errno));
99 guiSupport->postErrorMessage(errorMessage, "Text File Error");
106 UnicodeString myText(byteBuffer, fileSize, cp);
110 charCount = myText.length();
111 charBuffer = LE_NEW_ARRAY(UChar, charCount + 1);
112 if(charBuffer == 0) {
113 sprintf(errorMessage,"Couldn't get memory for reading %s: %s \n", fileName, strerror(errno));
114 guiSupport->postErrorMessage(errorMessage, "Text File Error");
118 myText.extract(0, myText.length(), charBuffer);
119 charBuffer[charCount] = 0; // NULL terminate for easier reading in the debugger