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1 // Copyright (c) 1997-2009 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 // |
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15 |
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16 #include "chat.h" |
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17 |
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18 CCommChatString* CCommChatString::NewL(const TDesC8& aDes, TBool aIsFolded) |
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19 // |
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20 // |
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21 // |
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22 { |
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23 CCommChatString* cs = new (ELeave) CCommChatString; |
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24 CleanupStack::PushL(cs); |
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25 cs->CreateL(aDes, aIsFolded); |
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26 CleanupStack::Pop(); |
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27 return cs; |
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28 } |
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29 |
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30 CCommChatString::CCommChatString() |
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31 // |
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32 // |
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33 // |
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34 { |
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35 __DECLARE_NAME(_S("CCommChatString")); |
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36 } |
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37 |
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38 CCommChatString::~CCommChatString() |
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39 // |
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40 // |
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41 // |
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42 { |
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43 User::Free(iString); |
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44 } |
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45 |
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46 void CCommChatString::CreateL(const TDesC8& aDes, TBool aIsFolded) |
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47 // |
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48 // |
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49 // |
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50 { |
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51 iIsFolded = aIsFolded; |
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52 iString = (TText8*) User::AllocL(aDes.Length()); |
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53 iLastChar = (iString+aDes.Length())-1; |
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54 Mem::Copy(iString, (TUint8*)aDes.Ptr(), aDes.Length()); |
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55 } |
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56 |
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57 CCommChatter::CCommChatter(MCommChatNotify* aNotify, TInt aPriority) |
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58 // |
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59 // |
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60 // |
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61 : CTimer(aPriority), iNotify(aNotify) |
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62 { |
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63 __DECLARE_NAME(_S("CCommChatter")); |
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64 CActiveScheduler::Add(this); |
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65 iList.SetOffset(_FOFF(CCommChatString,iLink)); |
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66 } |
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67 |
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68 CCommChatter::~CCommChatter() |
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69 // |
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70 // |
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71 // |
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72 { |
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73 DeleteAllAndStop(); |
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74 User::Free(iBuffer); |
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75 } |
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76 |
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77 void CCommChatter::CreateL(TInt aBufSize) |
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78 // |
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79 // |
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80 // |
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81 { |
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82 CTimer::ConstructL(); |
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83 iBuffer = (TText8*)User::AllocL(aBufSize); |
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84 iBufferEnd = (iBuffer+aBufSize)-1; |
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85 ClearHistory(); |
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86 } |
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87 |
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88 void CCommChatter::ClearHistory() |
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89 // |
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90 // Empty history |
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91 // |
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92 { |
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93 iLastChar = iBuffer; |
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94 iCount = 0; |
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95 } |
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96 |
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97 void CCommChatter::AddChar(TText8 aChar) |
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98 // |
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99 // Add a character to the history buffer |
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100 // Scan all strings to find any matches that may |
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101 // be completed. |
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102 // |
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103 { |
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104 // Add char to buffer |
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105 if (++iLastChar>iBufferEnd) |
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106 iLastChar = iBuffer; |
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107 *iLastChar = aChar; |
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108 ++iCount; |
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109 |
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110 TText8 fchar = (TText8)User::Fold(aChar); |
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111 |
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112 // Scan for matching last character |
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113 CCommChatString* cs; |
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114 TDblQueIter<CCommChatString> iter(iList); |
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115 |
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116 while (cs = iter++, cs!=NULL) |
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117 { |
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118 if (cs->IsFolded() |
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119 ? (cs->LastChar()==fchar && MatchF(cs)) |
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120 : (cs->LastChar()==aChar && Match(cs)) ) |
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121 { |
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122 iNotify->ChatStringMatch(cs); |
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123 cs = iter; // In case user removed cs; |
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124 } |
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125 } |
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126 } |
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127 |
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128 |
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129 TBool CCommChatter::Match(const CCommChatString* aString) const |
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130 // |
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131 // Match a chat sgring against the history buffer |
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132 // (Case sensitive) |
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133 // |
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134 { |
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135 const TText8* s = aString->Ptr(); |
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136 const TText8* sp = aString->EndPtr(); |
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137 const TText8* bp = iLastChar; |
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138 |
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139 if (iCount<aString->Length()) |
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140 return EFalse; |
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141 |
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142 while (*bp==*sp && sp>=s) |
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143 { |
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144 --sp; |
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145 if (--bp<iBuffer) |
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146 bp = iBufferEnd; |
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147 } |
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148 |
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149 return sp<s; |
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150 } |
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151 |
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152 TBool CCommChatter::MatchF(const CCommChatString* aString) const |
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153 // |
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154 // Match a folded chat sgring against the history buffer. |
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155 // (Case insensitive) |
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156 // |
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157 { |
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158 const TText8* s = aString->Ptr(); |
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159 const TText8* sp = aString->EndPtr(); |
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160 const TText8* bp = iLastChar; |
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161 |
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162 if (iCount<aString->Length()) |
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163 return EFalse; |
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164 |
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165 while (User::Fold(*bp)==*sp && sp>=s) |
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166 { |
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167 --sp; |
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168 if (--bp<iBuffer) |
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169 bp = iBufferEnd; |
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170 } |
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171 |
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172 return sp<s; |
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173 } |
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174 |
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175 void CCommChatter::RunL() |
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176 // |
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177 // Timer completed |
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178 // |
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179 { |
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180 iNotify->ChatTimeout(); |
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181 } |
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182 |
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183 void CCommChatter::AddString(CCommChatString* aString) |
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184 // |
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185 // Add a string to the list |
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186 // |
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187 { |
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188 iList.AddLast(*aString); |
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189 } |
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190 |
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191 void CCommChatter::RemoveString(CCommChatString* aString) |
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192 // |
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193 // Remove a string |
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194 // |
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195 { |
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196 aString->iLink.Deque(); |
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197 } |
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198 |
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199 void CCommChatter::DeleteAllAndStop() |
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200 // |
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201 // Remove a string |
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202 // |
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203 { |
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204 StopTimer(); |
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205 CCommChatString* cs; |
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206 while (!iList.IsEmpty()) |
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207 { |
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208 cs = iList.First(); |
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209 RemoveString(cs); |
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210 delete cs; |
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211 } |
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212 } |
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213 |
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214 void CCommChatter::StartTimer(TTimeIntervalMicroSeconds32 aTimeout) |
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215 // |
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216 // |
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217 // |
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218 { |
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219 if (IsActive()) |
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220 Cancel(); |
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221 After(aTimeout); |
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222 } |
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223 |
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224 void CCommChatter::StopTimer() |
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225 // |
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226 // |
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227 // |
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228 { |
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229 Cancel(); |
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230 } |