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1 // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // uniload.cpp - universal file load (work for narrow or wide builds) |
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15 // |
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16 |
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17 #include "uniload.h" |
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18 |
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19 HBufC *UnicodeLoad::LoadL(RFs &aFs, const TDesC &aName) |
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20 { |
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21 RFile pf; |
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22 TInt size; |
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23 User::LeaveIfError(pf.Open(aFs, aName, EFileShareAny)); |
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24 pf.Size(size); |
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25 // |
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26 // For narrow build, this allocates exactly right amount |
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27 // of space, for Unicode build, this allocates the size |
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28 // doubled in bytes, which is exactly what we want, if |
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29 // we need to widen the narrow Ascii control file (this |
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30 // is assumed to be the default case). For UNICODE file |
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31 // in UNICODE environment, this allocates too much space. |
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32 // |
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33 HBufC *data = HBufC::New(size); |
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34 |
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35 if (data == NULL) |
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36 { |
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37 pf.Close(); |
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38 User::Leave(KErrNoMemory); |
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39 } |
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40 // |
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41 // buf is "native" pointer, either 16 or 8 wide |
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42 // |
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43 TPtr buf(data->Des()); |
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44 #ifdef __WINS__ |
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45 buf.Set(data->Des()); // VC6 kludge |
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46 #endif |
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47 // |
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48 // ptr is always 8 wide |
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49 // |
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50 TPtr8 ptr((TUint8 *)buf.Ptr(), size, size); |
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51 pf.Read(ptr); |
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52 pf.Close(); |
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53 |
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54 if (size >= 2 && ptr[0] == 0xFF && ptr[1] == 0xFE) |
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55 { |
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56 // |
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57 // The file is presented as UNICODE text |
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58 // (for now, only one byte order supported) |
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59 // |
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60 size -= 2; |
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61 #ifdef _UNICODE |
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62 Mem::Copy((TUint8 *)ptr.Ptr(), ptr.Ptr() + 2, size); |
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63 buf.SetLength(size / 2); // True number of Unicode characters. |
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64 #else |
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65 // Trying to load a Unicode file for Narrow build |
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66 size = size / 2; |
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67 for (TInt i = 1; i < size; ++i) |
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68 { |
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69 if (ptr[2*i] != 0) |
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70 ptr[i] = 0x01; // Substitute too wide stuff with 0x1 |
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71 else |
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72 ptr[i] = ptr[2*i + 1]; |
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73 } |
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74 buf.SetLength(size); |
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75 #endif |
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76 } |
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77 else |
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78 { |
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79 // |
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80 // The file is narrow, 8 bit characters |
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81 // |
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82 buf.SetLength(size); |
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83 #ifdef _UNICODE |
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84 // Must "widen" the characters for unicode. |
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85 for (TInt i = size; --i >= 0; ) |
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86 buf[i] = ptr[i]; |
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87 #endif |
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88 } |
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89 return data; |
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90 } |