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1 module dmd.OutBuffer;
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2
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3 import std.stdarg;
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4 import std.contracts;
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5
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6 import core.stdc.stdlib;
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7 import core.stdc.string;
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8
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9 class OutBuffer
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10 {
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11 ubyte* data;
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12 uint offset;
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13 uint size;
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14
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15 this()
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16 {
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17 // do nothing
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18 }
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19
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20 final void* extractData()
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21 {
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22 void* p = cast(void*)data;
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23
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24 data = null;
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25 offset = 0;
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26 size = 0;
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27
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28 return p;
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29 }
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30
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31 void mark()
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32 {
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33 assert(false);
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34 }
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35
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36 final void reserve(uint nbytes)
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37 {
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38 //printf("OutBuffer::reserve: size = %d, offset = %d, nbytes = %d\n", size, offset, nbytes);
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39 if (size - offset < nbytes)
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40 {
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41 size = (offset + nbytes) * 2;
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42 data = cast(ubyte*)realloc(data, size);
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43 }
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44 }
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45
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46 final void setsize(uint size)
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47 {
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48 assert(false);
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49 }
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50
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51 final void reset()
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52 {
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53 offset = 0;
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54 }
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55
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56 final void write(const(void)* data, uint nbytes)
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57 {
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58 reserve(nbytes);
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59 memcpy(this.data + offset, data, nbytes);
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60 offset += nbytes;
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61 }
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62
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63 final void writebstring(ubyte* string_)
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64 {
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65 assert(false);
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66 }
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67
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68 final void writestring(const(char)[] string_)
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69 {
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70 write(string_.ptr , string_.length);
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71 }
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72
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73 final void writedstring(const(char)* string_)
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74 {
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75 assert(false);
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76 }
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77
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78 final void writedstring(const(wchar)* string_)
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79 {
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80 assert(false);
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81 }
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82
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83 final void prependstring(const(char)[] string_)
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84 {
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85 uint len = string_.length;
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86 reserve(len);
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87 memmove(data + len, data, offset);
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88 memcpy(data, string_.ptr, len);
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89 offset += len;
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90 }
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91
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92 final void writenl() // write newline
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93 {
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94 assert(false);
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95 }
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96
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97 final void writeByte(uint b)
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98 {
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99 reserve(1);
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100 this.data[offset] = cast(ubyte)b;
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101 offset++;
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102 }
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103
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104 final void writebyte(uint b) { writeByte(b); }
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105
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106 final void writeUTF8(uint b)
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107 {
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108 reserve(6);
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109 if (b <= 0x7F)
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110 {
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111 this.data[offset] = cast(ubyte)b;
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112 offset++;
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113 }
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114 else if (b <= 0x7FF)
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115 {
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116 this.data[offset + 0] = cast(ubyte)((b >> 6) | 0xC0);
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117 this.data[offset + 1] = cast(ubyte)((b & 0x3F) | 0x80);
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118 offset += 2;
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119 }
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120 else if (b <= 0xFFFF)
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121 {
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122 this.data[offset + 0] = cast(ubyte)((b >> 12) | 0xE0);
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123 this.data[offset + 1] = cast(ubyte)(((b >> 6) & 0x3F) | 0x80);
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124 this.data[offset + 2] = cast(ubyte)((b & 0x3F) | 0x80);
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125 offset += 3;
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126 }
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127 else if (b <= 0x1FFFFF)
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128 {
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129 this.data[offset + 0] = cast(ubyte)((b >> 18) | 0xF0);
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130 this.data[offset + 1] = cast(ubyte)(((b >> 12) & 0x3F) | 0x80);
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131 this.data[offset + 2] = cast(ubyte)(((b >> 6) & 0x3F) | 0x80);
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132 this.data[offset + 3] = cast(ubyte)((b & 0x3F) | 0x80);
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133 offset += 4;
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134 }
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135 else if (b <= 0x3FFFFFF)
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136 {
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137 this.data[offset + 0] = cast(ubyte)((b >> 24) | 0xF8);
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138 this.data[offset + 1] = cast(ubyte)(((b >> 18) & 0x3F) | 0x80);
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139 this.data[offset + 2] = cast(ubyte)(((b >> 12) & 0x3F) | 0x80);
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140 this.data[offset + 3] = cast(ubyte)(((b >> 6) & 0x3F) | 0x80);
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141 this.data[offset + 4] = cast(ubyte)((b & 0x3F) | 0x80);
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142 offset += 5;
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143 }
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144 else if (b <= 0x7FFFFFFF)
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145 {
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146 this.data[offset + 0] = cast(ubyte)((b >> 30) | 0xFC);
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147 this.data[offset + 1] = cast(ubyte)(((b >> 24) & 0x3F) | 0x80);
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148 this.data[offset + 2] = cast(ubyte)(((b >> 18) & 0x3F) | 0x80);
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149 this.data[offset + 3] = cast(ubyte)(((b >> 12) & 0x3F) | 0x80);
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150 this.data[offset + 4] = cast(ubyte)(((b >> 6) & 0x3F) | 0x80);
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151 this.data[offset + 5] = cast(ubyte)((b & 0x3F) | 0x80);
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152 offset += 6;
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153 }
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154 else
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155 assert(0);
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156 }
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157
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158 final void writedchar(uint b)
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159 {
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160 assert(false);
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161 }
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162
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163 final void prependbyte(uint b)
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164 {
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165 assert(false);
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166 }
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167
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168 final void writeword(uint w)
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169 {
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170 reserve(2);
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171 *cast(ushort*)(this.data + offset) = cast(ushort)w;
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172 offset += 2;
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173 }
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174
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175 final void writeUTF16(uint w)
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176 {
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177 reserve(4);
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178 if (w <= 0xFFFF)
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179 {
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180 *cast(ushort*)(this.data + offset) = cast(ushort)w;
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181 offset += 2;
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182 }
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183 else if (w <= 0x10FFFF)
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184 {
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185 *cast(ushort*)(this.data + offset) = cast(ushort)((w >> 10) + 0xD7C0);
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186 *cast(ushort*)(this.data + offset + 2) = cast(ushort)((w & 0x3FF) | 0xDC00);
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187 offset += 4;
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188 }
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189 else
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190 assert(0);
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191 }
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192
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193 final void write4(uint w)
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194 {
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195 assert(false);
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196 }
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197
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198 final void write(OutBuffer buf)
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199 {
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200 if (buf)
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201 {
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202 reserve(buf.offset);
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203 memcpy(data + offset, buf.data, buf.offset);
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204 offset += buf.offset;
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205 }
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206 }
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207
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208 final void write(Object obj)
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209 {
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210 assert(false);
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211 }
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212
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213 final void fill0(uint nbytes)
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214 {
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215 reserve(nbytes);
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216 memset(data + offset, 0, nbytes);
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217 offset += nbytes;
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218 }
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219
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220 final void align_(uint size)
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221 {
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222 assert(false);
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223 }
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224
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225 void vprintf(const(char)* format, va_list args)
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226 {
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227 assert(false);
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228 }
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229
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230 void printf(T...)(string format, T t)
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231 {
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232 string s = std.string.format(format, t);
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233 writestring(s);
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234 }
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235
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236 version (M_UNICODE) {
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237 /// void vprintf(const uint short *format, va_list args);
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238 /// void printf(const uint short *format, ...);
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239 }
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240 final void bracket(char left, char right)
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241 {
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242 assert(false);
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243 }
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244
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245 final uint bracket(uint i, const(char)* left, uint j, const(char)* right)
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246 {
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247 assert(false);
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248 }
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249
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250 final void spread(uint offset, uint nbytes)
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251 {
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252 assert(false);
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253 }
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254
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255 final uint insert(uint offset, const(void)* data, uint nbytes)
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256 {
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257 assert(false);
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258 }
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259
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260 final void remove(uint offset, uint nbytes)
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261 {
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262 assert(false);
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263 }
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264
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265 string toChars()
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266 {
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267 return getString().idup;
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268 }
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269
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270 final string extractString()
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271 {
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272 char[] s = getString();
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273 data = null;
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274 offset = 0;
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275 size = 0;
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276
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277 return assumeUnique(s);
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278 }
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279
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280 final char[] getString()
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281 {
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282 char* s = cast(char*)data;
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283 return s[0..offset];
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284 }
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285 } |
