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1 module dmd.FileName;
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2
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3 import dmd.String;
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4 import dmd.Array;
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5 import dmd.OutBuffer;
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6 import dmd.File;
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7
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8 import core.stdc.stdlib : malloc, alloca;
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9 import core.stdc.string : memcpy, strlen;
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10 import core.stdc.ctype : isspace;
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11
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12 import std.contracts : assumeUnique;
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13 import std.string : cmp, icmp;
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14 import std.file : mkdirRecurse;
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15
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16 import core.sys.windows.windows;
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17
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18 class FileName : String
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19 {
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20 this(string str)
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21 {
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22 super(str);
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23 }
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24
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25 this(string path, string name)
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26 {
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27 super(combine(path, name));
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28 }
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29
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30 hash_t hashCode()
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31 {
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32 version (_WIN32) {
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33 // We need a different hashCode because it must be case-insensitive
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34 size_t len = str.length;
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35 hash_t hash = 0;
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36 ubyte* s = cast(ubyte*)str.ptr;
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37
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38 for (;;)
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39 {
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40 switch (len)
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41 {
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42 case 0:
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43 return hash;
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44
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45 case 1:
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46 hash *= 37;
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47 hash += *(cast(ubyte*)s) | 0x20;
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48 return hash;
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49
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50 case 2:
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51 hash *= 37;
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52 hash += *(cast(ushort*)s) | 0x2020;
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53 return hash;
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54
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55 case 3:
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56 hash *= 37;
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57 hash += (*cast(ushort*)s) << 8 +
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58 ((cast(ubyte*)s)[2]) | 0x202020;
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59 break;
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60
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61 default:
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62 hash *= 37;
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63 hash += (*cast(int*)s) | 0x20202020;
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64 s += 4;
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65 len -= 4;
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66 break;
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67 }
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68 }
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69 } else {
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70 // darwin HFS is case insensitive, though...
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71 return super.hashCode();
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72 }
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73 }
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74
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75 bool opEquals(Object obj)
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76 {
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77 return opCmp(obj) == 0;
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78 }
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79
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80 static int equals(string name1, string name2)
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81 {
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82 return compare(name1, name2) == 0;
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83 }
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84
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85 int opCmp(Object obj)
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86 {
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87 return compare(str, (cast(FileName)obj).str);
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88 }
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89
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90 static int compare(string name1, string name2)
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91 {
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92 version (_WIN32) {
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93 return icmp(name1, name2);
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94 } else {
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95 return cmp(name1, name2);
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96 }
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97 }
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98
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99 static bool absolute(string name)
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100 {
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101 version (_WIN32) {
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102 return (*name == '\\') ||
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103 (*name == '/') ||
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104 (*name && name[1] == ':');
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105 } else version (POSIX) {
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106 return (*name == '/');
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107 } else {
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108 static assert(false);
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109 }
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110 }
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111
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112 /********************************
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113 * Return filename extension (read-only).
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114 * Points past '.' of extension.
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115 * If there isn't one, return NULL.
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116 */
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117 static string ext(string str)
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118 {
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119 foreach_reverse (i, c; str)
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120 {
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121 switch (c)
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122 {
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123 case '.':
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124 return str[i+1..$];
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125 version (POSIX) {
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126 case '/':
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127 return null;
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128 }
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129 version (_WIN32) {
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130 case '\\':
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131 case ':':
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132 case '/':
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133 return null;
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134
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135 } default:
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136 break;
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137 }
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138 }
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139
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140 return null;
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141 }
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142
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143 string ext()
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144 {
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145 return ext(str);
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146 }
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147
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148 /********************************
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149 * Return filename with extension removed.
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150 */
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151
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152 static string removeExt(string str)
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153 {
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154 string e = ext(str);
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155 if (e !is null)
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156 {
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157 size_t len = (e.ptr - str.ptr - 1);
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158 return str[0..len];
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159 }
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160
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161 return str;
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162 }
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163
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164 /********************************
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165 * Return filename name excluding path (read-only).
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166 */
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167
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168 static string name(string str)
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169 {
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170 foreach_reverse(i, c; str)
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171 {
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172 switch (c)
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173 {
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174 version (POSIX) {
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175 case '/':
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176 return str[i+1..$];
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177 }
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178 version (_WIN32) {
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179 case '/':
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180 case '\\':
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181 return str[i+1..$];
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182 case ':':
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183 /* The ':' is a drive letter only if it is the second
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184 * character or the last character,
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185 * otherwise it is an ADS (Alternate Data Stream) separator.
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186 * Consider ADS separators as part of the file name.
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187 */
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188 if (i == 1 || i == str.length - 1)
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189 return str[i+1..$];
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190 }
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191 default:
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192 break;
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193 }
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194 }
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195
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196 return str;
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197 }
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198
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199 string name()
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200 {
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201 return name(str);
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202 }
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203
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204 /**************************************
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205 * Return path portion of str.
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206 * Path will does not include trailing path separator.
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207 */
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208
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209 static string path(string str)
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210 {
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211 auto n = name(str).ptr;
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212
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213 if (n > str.ptr)
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214 {
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215 auto p = n - 1;
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216 version (POSIX) {
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217 if (*p == '/')
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218 n--;
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219 } else version (_WIN32) {
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220 if (*p == '\\' || *p == '/')
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221 n--;
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222 } else {
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223 static assert(false);
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224 }
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225 }
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226
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227 size_t pathlen = n - str.ptr;
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228 return str[0..pathlen];
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229 }
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230
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231 /**************************************
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232 * Replace filename portion of path.
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233 */
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234
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235 static string replaceName(string path, string name)
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236 {
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237 if (absolute(name))
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238 return name;
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239
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240 string n = FileName.name(path);
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241 if (n is path)
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242 return name;
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243
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244 size_t pathlen = n.ptr - path.ptr;
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245 size_t namelen = name.length;
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246
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247 char* f = cast(char*)malloc(pathlen + 1 + namelen + 1);
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248 memcpy(f, path.ptr, pathlen);
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249 version (POSIX) {
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250 if (path[pathlen - 1] != '/')
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251 {
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252 f[pathlen] = '/';
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253 pathlen++;
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254 }
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255 } else version (_WIN32) {
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256 if (path[pathlen - 1] != '\\' &&
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257 path[pathlen - 1] != '/' &&
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258 path[pathlen - 1] != ':')
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259 {
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260 f[pathlen] = '\\';
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261 pathlen++;
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262 }
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263 } else {
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264 static assert(false);
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265 }
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266 memcpy(f + pathlen, name.ptr, namelen + 1);
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267
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268 return assumeUnique(f[0..pathlen+namelen]);
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269 }
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270
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271 static string combine(string path, string name)
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272 {
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273 size_t pathlen;
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274 size_t namelen;
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275
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276 if (path.length == 0)
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277 return name;
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278
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279 pathlen = path.length;
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280 namelen = name.length;
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281
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282 char* f = cast(char*)malloc(pathlen + 1 + namelen + 1);
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283
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284 memcpy(f, path.ptr, pathlen);
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285
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286 version (POSIX) {
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287 if (path[pathlen - 1] != '/')
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288 {
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289 f[pathlen] = '/';
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290 pathlen++;
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291 }
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292 } else version (_WIN32) {
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293 if (path[pathlen - 1] != '\\' &&
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294 path[pathlen - 1] != '/' &&
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295 path[pathlen - 1] != ':')
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296 {
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297 f[pathlen] = '\\';
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298 pathlen++;
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299 }
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300 } else {
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301 static assert(0);
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302 }
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303 memcpy(f + pathlen, name.ptr, namelen + 1);
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304
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305 return assumeUnique(f[0..pathlen+namelen]);
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306 }
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307
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308 static string[] splitPath(const(char)[] spath)
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309 {
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310 char c = 0; // unnecessary initializer is for VC /W4
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311
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312 scope OutBuffer buf = new OutBuffer();
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313 string[] array;
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314
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315 if (spath !is null)
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316 {
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317 const(char)* p = spath.ptr;
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318 int len = spath.length;
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319 do
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320 {
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321 char instring = 0;
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322
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323 while (len > 0 && isspace(*p)) { // skip leading whitespace
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324 p++;
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325 --len;
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326 }
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327
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328 buf.reserve(len + 1); // guess size of path
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329 for (; len; p++, len--)
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330 {
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331 c = *p;
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332 switch (c)
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333 {
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334 case '"':
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335 instring ^= 1; // toggle inside/outside of string
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336 continue;
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337
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338 version (MACINTOSH) {
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339 case ',':
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340 }
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341 version (_WIN32) {
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342 case ';':
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343 }
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344 version (POSIX) {
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345 case ':':
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346 }
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347 p++;
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348 break; // note that ; cannot appear as part
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349 // of a path, quotes won't protect it
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350
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351 case 0x1A: // ^Z means end of file
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352 //case 0:
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353 break;
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354
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355 case '\r':
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356 continue; // ignore carriage returns
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357
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358 version (POSIX) {
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359 case '~':
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360 buf.writestring(getenv("HOME"));
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361 continue;
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362 }
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363
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364 version (disabled) {
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365 case ' ':
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366 case '\t': // tabs in filenames?
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367 if (!instring) // if not in string
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368 break; // treat as end of path
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369 }
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370 default:
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371 buf.writeByte(c);
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372 continue;
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373 }
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374 break;
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375 }
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376 if (buf.offset) // if path is not empty
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377 {
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378 //buf.writeByte(0); // to asciiz
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379 array ~= buf.extractString();
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380 }
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381 } while (len > 0);
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382 }
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383
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384 return array;
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385 }
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386
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387 static FileName defaultExt(string name, string ext)
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388 {
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389 string e = FileName.ext(name);
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390 if (e !is null) {
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391 // if already has an extension
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392 return new FileName(name);
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393 }
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394
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395 size_t len = name.length;
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396 size_t extlen = ext.length;
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397 char* s = cast(char*)malloc(len + 1 + extlen + 1);
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398 memcpy(s, name.ptr, len);
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399 s[len] = '.';
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400 memcpy(s + len + 1, ext.ptr, extlen + 1);
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401
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402 return new FileName(assumeUnique(s[0..len+1+extlen]));
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403 }
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404
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405 static FileName forceExt(string name, string ext)
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406 {
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407 string e = FileName.ext(name);
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408 if (e !is null) // if already has an extension
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409 {
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410 size_t len = e.ptr - name.ptr;
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411 size_t extlen = ext.length;
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412
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413 char* s = cast(char*)malloc(len + extlen + 1);
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414 memcpy(s, name.ptr, len);
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415 memcpy(s + len, ext.ptr, extlen + 1);
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416 return new FileName(assumeUnique(s[0..len+extlen]));
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417 }
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418
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419 return defaultExt(name, ext); // doesn't have one
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420 }
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421
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422 /******************************
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423 * Return true if extensions match.
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424 */
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425
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426 bool equalsExt(string ext)
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427 {
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428 string e = FileName.ext();
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429 if (e.length == 0 && ext.length == 0)
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430 return true;
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431
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432 if (e.length == 0 || ext.length == 0)
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433 return false;
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434
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435 version (POSIX) {
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436 return cmp(e,ext) == 0;
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437 } else version (_WIN32) {
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438 return icmp(e,ext) == 0;
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439 } else {
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440 static assert(0);
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441 }
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442 }
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443
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444 /*************************************
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445 * Copy file from this to to.
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446 */
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447
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448 void CopyTo(FileName to)
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449 {
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450 scope File file = new File(this);
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451
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452 version (_WIN32) {
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453 file.touchtime = malloc(WIN32_FIND_DATA.sizeof); // keep same file time
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454 } else version (POSIX) {
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455 file.touchtime = malloc(stat.sizeof); // keep same file time
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456 } else {
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457 static assert(0);
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458 }
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459 file.readv();
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460 file.name = to;
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461 file.writev();
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462 }
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463
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464 /*************************************
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465 * Search Path for file.
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466 * Input:
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467 * cwd if true, search current directory before searching path
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468 */
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469
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470 static string searchPath(Array path, string name, bool cwd)
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471 {
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472 if (absolute(name)) {
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473 return exists(name) ? name : null;
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474 }
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475
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476 if (cwd) {
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477 if (exists(name)) {
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478 return name;
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479 }
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480 }
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481
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482 if (path !is null) {
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483 foreach (i; 0..path.dim)
|
|
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484 {
|
|
|
485 String p = cast(String)path.data[i];
|
|
|
486 string n = combine(p.str, name);
|
|
|
487
|
|
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488 if (exists(n))
|
|
|
489 return n;
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|
|
490 }
|
|
|
491 }
|
|
|
492
|
|
|
493 return null;
|
|
|
494 }
|
|
|
495
|
|
|
496 static int exists(string name)
|
|
|
497 {
|
|
|
498 version (POSIX) {
|
|
|
499 stat st;
|
|
|
500
|
|
|
501 if (stat(name, &st) < 0)
|
|
|
502 return 0;
|
|
|
503 if (S_ISDIR(st.st_mode))
|
|
|
504 return 2;
|
|
|
505 return 1;
|
|
|
506 } else version (_WIN32) {
|
|
|
507 HANDLE h = CreateFileA(toStringz(name), GENERIC_READ, FILE_SHARE_READ, null, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN, HANDLE.init); ///
|
|
|
508 if (h == INVALID_HANDLE_VALUE) {
|
|
|
509 return 0;
|
|
|
510 }
|
|
|
511
|
|
|
512 CloseHandle(h);
|
|
|
513
|
|
|
514 DWORD dw = GetFileAttributesA(name.ptr); /// CARE!
|
|
|
515 if (dw == -1L) {
|
|
|
516 assert(false);
|
|
|
517 return 0;
|
|
|
518 } else if (dw & FILE_ATTRIBUTE_DIRECTORY) {
|
|
|
519 return 2;
|
|
|
520 } else {
|
|
|
521 return 1;
|
|
|
522 }
|
|
|
523 } else {
|
|
|
524 static assert(0);
|
|
|
525 }
|
|
|
526 }
|
|
|
527
|
|
|
528 static void ensurePathExists(string path)
|
|
|
529 {
|
|
|
530 try {
|
|
|
531 mkdirRecurse(path);
|
|
|
532 } catch {
|
|
|
533 }
|
|
|
534 }
|
|
|
535 } |
