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Rev | Author | Line No. | Line |
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2288 | clevermous | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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2455 | mario79 | 3 | ;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;; |
2288 | clevermous | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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7 | |||
8 | $Revision: 3539 $ |
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9 | |||
10 | |||
11 | uglobal |
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12 | cd_current_pointer_of_input dd 0 |
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13 | cd_current_pointer_of_input_2 dd 0 |
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14 | cd_mem_location dd 0 |
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15 | cd_counter_block dd 0 |
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16 | IDE_Channel_1 db 0 |
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17 | IDE_Channel_2 db 0 |
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18 | endg |
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19 | |||
20 | reserve_cd: |
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21 | |||
22 | cli |
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23 | cmp [cd_status], 0 |
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24 | je reserve_ok2 |
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25 | |||
26 | sti |
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27 | call change_task |
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28 | jmp reserve_cd |
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29 | |||
30 | reserve_ok2: |
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31 | |||
32 | push eax |
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33 | mov eax, [CURRENT_TASK] |
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34 | shl eax, 5 |
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35 | mov eax, [eax+CURRENT_TASK+TASKDATA.pid] |
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36 | mov [cd_status], eax |
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37 | pop eax |
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38 | sti |
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39 | ret |
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40 | |||
41 | reserve_cd_channel: |
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42 | cmp [ChannelNumber], 1 |
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43 | jne .IDE_Channel_2 |
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44 | .IDE_Channel_1: |
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45 | cli |
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46 | cmp [IDE_Channel_1], 0 |
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47 | je .reserve_ok_1 |
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48 | sti |
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49 | call change_task |
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50 | jmp .IDE_Channel_1 |
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51 | .IDE_Channel_2: |
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52 | cli |
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53 | cmp [IDE_Channel_2], 0 |
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54 | je .reserve_ok_2 |
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55 | sti |
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56 | call change_task |
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57 | jmp .IDE_Channel_2 |
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58 | .reserve_ok_1: |
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59 | mov [IDE_Channel_1], 1 |
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60 | sti |
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61 | ret |
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62 | .reserve_ok_2: |
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63 | mov [IDE_Channel_2], 1 |
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64 | sti |
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65 | ret |
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66 | |||
67 | free_cd_channel: |
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68 | cmp [ChannelNumber], 1 |
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69 | jne .IDE_Channel_2 |
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70 | .IDE_Channel_1: |
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71 | mov [IDE_Channel_1], 0 |
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72 | sti |
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73 | ret |
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74 | .IDE_Channel_2: |
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75 | mov [IDE_Channel_2], 0 |
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76 | sti |
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77 | ret |
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78 | |||
79 | uglobal |
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80 | cd_status dd 0 |
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81 | endg |
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82 | |||
83 | ;---------------------------------------------------------------- |
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84 | ; |
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85 | ; fs_CdRead - LFN variant for reading CD disk |
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86 | ; |
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87 | ; esi points to filename /dir1/dir2/.../dirn/file,0 |
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88 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
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89 | ; may be ebx=0 - start from first byte |
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90 | ; ecx number of bytes to read, 0+ |
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91 | ; edx mem location to return data |
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92 | ; |
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93 | ; ret ebx = bytes read or 0xffffffff file not found |
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94 | ; eax = 0 ok read or other = errormsg |
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95 | ; |
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96 | ;-------------------------------------------------------------- |
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97 | fs_CdRead: |
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98 | push edi |
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99 | cmp byte [esi], 0 |
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100 | jnz @f |
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101 | .noaccess: |
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102 | pop edi |
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103 | .noaccess_2: |
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104 | or ebx, -1 |
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105 | mov eax, ERROR_ACCESS_DENIED |
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106 | ret |
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107 | |||
108 | .noaccess_3: |
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109 | pop eax edx ecx edi |
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110 | jmp .noaccess_2 |
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111 | |||
112 | @@: |
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113 | call cd_find_lfn |
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114 | jnc .found |
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115 | pop edi |
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116 | cmp [DevErrorCode], 0 |
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117 | jne .noaccess_2 |
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118 | or ebx, -1 |
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119 | mov eax, ERROR_FILE_NOT_FOUND |
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120 | ret |
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121 | |||
122 | .found: |
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123 | mov edi, [cd_current_pointer_of_input] |
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124 | test byte [edi+25], 10b; do not allow read directories |
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125 | jnz .noaccess |
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126 | test ebx, ebx |
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127 | jz .l1 |
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128 | cmp dword [ebx+4], 0 |
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129 | jz @f |
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130 | xor ebx, ebx |
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131 | .reteof: |
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132 | mov eax, 6; end of file |
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133 | pop edi |
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134 | ret |
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135 | @@: |
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136 | mov ebx, [ebx] |
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137 | .l1: |
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138 | push ecx edx |
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139 | push 0 |
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3539 | clevermous | 140 | mov eax, [edi+10] ; реальный размер файловой секции |
2288 | clevermous | 141 | sub eax, ebx |
142 | jb .eof |
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143 | cmp eax, ecx |
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144 | jae @f |
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145 | mov ecx, eax |
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146 | mov byte [esp], 6 |
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147 | @@: |
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148 | mov eax, [edi+2] |
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149 | mov [CDSectorAddress], eax |
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150 | ; now eax=cluster, ebx=position, ecx=count, edx=buffer for data |
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151 | .new_sector: |
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152 | test ecx, ecx |
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153 | jz .done |
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154 | sub ebx, 2048 |
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155 | jae .next |
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156 | add ebx, 2048 |
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157 | jnz .incomplete_sector |
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158 | cmp ecx, 2048 |
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159 | jb .incomplete_sector |
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160 | ; we may read and memmove complete sector |
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161 | mov [CDDataBuf_pointer], edx |
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3539 | clevermous | 162 | call ReadCDWRetr; читаем сектор файла |
2288 | clevermous | 163 | cmp [DevErrorCode], 0 |
164 | jne .noaccess_3 |
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165 | add edx, 2048 |
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166 | sub ecx, 2048 |
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167 | .next: |
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168 | inc dword [CDSectorAddress] |
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169 | jmp .new_sector |
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170 | .incomplete_sector: |
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171 | ; we must read and memmove incomplete sector |
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172 | mov [CDDataBuf_pointer], CDDataBuf |
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3539 | clevermous | 173 | call ReadCDWRetr; читаем сектор файла |
2288 | clevermous | 174 | cmp [DevErrorCode], 0 |
175 | jne .noaccess_3 |
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176 | push ecx |
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177 | add ecx, ebx |
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178 | cmp ecx, 2048 |
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179 | jbe @f |
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180 | mov ecx, 2048 |
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181 | @@: |
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182 | sub ecx, ebx |
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183 | push edi esi ecx |
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184 | mov edi, edx |
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185 | lea esi, [CDDataBuf + ebx] |
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186 | cld |
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187 | rep movsb |
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188 | pop ecx esi edi |
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189 | add edx, ecx |
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190 | sub [esp], ecx |
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191 | pop ecx |
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192 | xor ebx, ebx |
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193 | jmp .next |
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194 | |||
195 | .done: |
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196 | mov ebx, edx |
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197 | pop eax edx ecx edi |
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198 | sub ebx, edx |
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199 | ret |
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200 | .eof: |
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201 | mov ebx, edx |
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202 | pop eax edx ecx |
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203 | sub ebx, edx |
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204 | jmp .reteof |
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205 | |||
206 | ;---------------------------------------------------------------- |
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207 | ; |
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208 | ; fs_CdReadFolder - LFN variant for reading CD disk folder |
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209 | ; |
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210 | ; esi points to filename /dir1/dir2/.../dirn/file,0 |
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211 | ; ebx pointer to structure 32-bit number = first wanted block, 0+ |
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212 | ; & flags (bitfields) |
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213 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
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214 | ; ecx number of blocks to read, 0+ |
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215 | ; edx mem location to return data |
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216 | ; |
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217 | ; ret ebx = blocks read or 0xffffffff folder not found |
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218 | ; eax = 0 ok read or other = errormsg |
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219 | ; |
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220 | ;-------------------------------------------------------------- |
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221 | fs_CdReadFolder: |
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222 | push edi |
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223 | call cd_find_lfn |
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224 | jnc .found |
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225 | pop edi |
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226 | cmp [DevErrorCode], 0 |
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227 | jne .noaccess_1 |
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228 | or ebx, -1 |
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229 | mov eax, ERROR_FILE_NOT_FOUND |
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230 | ret |
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231 | .found: |
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232 | mov edi, [cd_current_pointer_of_input] |
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233 | test byte [edi+25], 10b ; do not allow read directories |
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234 | jnz .found_dir |
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235 | pop edi |
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236 | .noaccess_1: |
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237 | or ebx, -1 |
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238 | mov eax, ERROR_ACCESS_DENIED |
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239 | ret |
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240 | .found_dir: |
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241 | mov eax, [edi+2] ; eax=cluster |
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242 | mov [CDSectorAddress], eax |
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3539 | clevermous | 243 | mov eax, [edi+10] ; размер директрории |
2288 | clevermous | 244 | .doit: |
245 | ; init header |
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246 | push eax ecx |
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247 | mov edi, edx |
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248 | mov ecx, 32/4 |
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249 | xor eax, eax |
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250 | rep stosd |
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251 | pop ecx eax |
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252 | mov byte [edx], 1 ; version |
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253 | mov [cd_mem_location], edx |
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254 | add [cd_mem_location], 32 |
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3539 | clevermous | 255 | ; начинаем переброску БДВК в УСВК |
2288 | clevermous | 256 | ;.mainloop: |
257 | mov [cd_counter_block], dword 0 |
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258 | dec dword [CDSectorAddress] |
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259 | push ecx |
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260 | .read_to_buffer: |
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261 | inc dword [CDSectorAddress] |
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262 | mov [CDDataBuf_pointer], CDDataBuf |
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3539 | clevermous | 263 | call ReadCDWRetr ; читаем сектор директории |
2288 | clevermous | 264 | cmp [DevErrorCode], 0 |
265 | jne .noaccess_1 |
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266 | call .get_names_from_buffer |
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267 | sub eax, 2048 |
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3539 | clevermous | 268 | ; директория закончилась? |
2288 | clevermous | 269 | ja .read_to_buffer |
270 | mov edi, [cd_counter_block] |
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271 | mov [edx+8], edi |
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272 | mov edi, [ebx] |
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273 | sub [edx+4], edi |
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274 | xor eax, eax |
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275 | dec ecx |
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276 | js @f |
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277 | mov al, ERROR_END_OF_FILE |
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278 | @@: |
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279 | pop ecx edi |
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280 | mov ebx, [edx+4] |
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281 | ret |
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282 | |||
283 | .get_names_from_buffer: |
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284 | mov [cd_current_pointer_of_input_2], CDDataBuf |
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285 | push eax esi edi edx |
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286 | .get_names_from_buffer_1: |
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287 | call cd_get_name |
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288 | jc .end_buffer |
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289 | inc dword [cd_counter_block] |
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290 | mov eax, [cd_counter_block] |
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291 | cmp [ebx], eax |
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292 | jae .get_names_from_buffer_1 |
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293 | test ecx, ecx |
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294 | jz .get_names_from_buffer_1 |
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295 | mov edi, [cd_counter_block] |
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296 | mov [edx+4], edi |
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297 | dec ecx |
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298 | mov esi, ebp |
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299 | mov edi, [cd_mem_location] |
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300 | add edi, 40 |
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301 | test dword [ebx+4], 1; 0=ANSI, 1=UNICODE |
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302 | jnz .unicode |
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303 | ; jmp .unicode |
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304 | .ansi: |
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305 | cmp [cd_counter_block], 2 |
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306 | jbe .ansi_parent_directory |
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307 | cld |
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308 | lodsw |
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309 | xchg ah, al |
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310 | call uni2ansi_char |
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311 | cld |
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312 | stosb |
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3539 | clevermous | 313 | ; проверка конца файла |
2288 | clevermous | 314 | mov ax, [esi] |
3539 | clevermous | 315 | cmp ax, word 3B00h; сепаратор конца файла ';' |
2288 | clevermous | 316 | je .cd_get_parameters_of_file_1 |
3539 | clevermous | 317 | ; проверка для файлов не заканчивающихся сепаратором |
2288 | clevermous | 318 | movzx eax, byte [ebp-33] |
319 | add eax, ebp |
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320 | sub eax, 34 |
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321 | cmp esi, eax |
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322 | je .cd_get_parameters_of_file_1 |
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3539 | clevermous | 323 | ; проверка конца папки |
2288 | clevermous | 324 | movzx eax, byte [ebp-1] |
325 | add eax, ebp |
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326 | cmp esi, eax |
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327 | jb .ansi |
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328 | .cd_get_parameters_of_file_1: |
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329 | mov [edi], byte 0 |
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330 | call cd_get_parameters_of_file |
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331 | add [cd_mem_location], 304 |
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332 | jmp .get_names_from_buffer_1 |
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333 | |||
334 | .ansi_parent_directory: |
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335 | cmp [cd_counter_block], 2 |
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336 | je @f |
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337 | mov [edi], byte '.' |
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338 | inc edi |
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339 | jmp .cd_get_parameters_of_file_1 |
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340 | @@: |
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341 | mov [edi], word '..' |
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342 | add edi, 2 |
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343 | jmp .cd_get_parameters_of_file_1 |
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344 | |||
345 | .unicode: |
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346 | cmp [cd_counter_block], 2 |
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347 | jbe .unicode_parent_directory |
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348 | cld |
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349 | movsw |
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3539 | clevermous | 350 | ; проверка конца файла |
2288 | clevermous | 351 | mov ax, [esi] |
3539 | clevermous | 352 | cmp ax, word 3B00h; сепаратор конца файла ';' |
2288 | clevermous | 353 | je .cd_get_parameters_of_file_2 |
3539 | clevermous | 354 | ; проверка для файлов не заканчивающихся сепаратором |
2288 | clevermous | 355 | movzx eax, byte [ebp-33] |
356 | add eax, ebp |
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357 | sub eax, 34 |
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358 | cmp esi, eax |
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359 | je .cd_get_parameters_of_file_2 |
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3539 | clevermous | 360 | ; проверка конца папки |
2288 | clevermous | 361 | movzx eax, byte [ebp-1] |
362 | add eax, ebp |
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363 | cmp esi, eax |
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364 | jb .unicode |
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365 | .cd_get_parameters_of_file_2: |
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366 | mov [edi], word 0 |
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367 | call cd_get_parameters_of_file |
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368 | add [cd_mem_location], 560 |
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369 | jmp .get_names_from_buffer_1 |
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370 | |||
371 | .unicode_parent_directory: |
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372 | cmp [cd_counter_block], 2 |
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373 | je @f |
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374 | mov [edi], word 2E00h; '.' |
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375 | add edi, 2 |
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376 | jmp .cd_get_parameters_of_file_2 |
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377 | @@: |
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378 | mov [edi], dword 2E002E00h; '..' |
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379 | add edi, 4 |
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380 | jmp .cd_get_parameters_of_file_2 |
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381 | |||
382 | .end_buffer: |
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383 | pop edx edi esi eax |
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384 | ret |
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385 | |||
386 | cd_get_parameters_of_file: |
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387 | mov edi, [cd_mem_location] |
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388 | cd_get_parameters_of_file_1: |
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3539 | clevermous | 389 | ; получаем атрибуты файла |
2288 | clevermous | 390 | xor eax, eax |
3539 | clevermous | 391 | ; файл не архивировался |
2288 | clevermous | 392 | inc eax |
393 | shl eax, 1 |
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3539 | clevermous | 394 | ; это каталог? |
2288 | clevermous | 395 | test [ebp-8], byte 2 |
396 | jz .file |
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397 | inc eax |
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398 | .file: |
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3539 | clevermous | 399 | ; метка тома не как в FAT, в этом виде отсутсвует |
400 | ; файл не является системным |
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2288 | clevermous | 401 | shl eax, 3 |
3539 | clevermous | 402 | ; файл является скрытым? (атрибут существование) |
2288 | clevermous | 403 | test [ebp-8], byte 1 |
404 | jz .hidden |
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405 | inc eax |
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406 | .hidden: |
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407 | shl eax, 1 |
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3539 | clevermous | 408 | ; файл всегда только для чтения, так как это CD |
2288 | clevermous | 409 | inc eax |
410 | mov [edi], eax |
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3539 | clevermous | 411 | ; получаем время для файла |
412 | ;час |
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2288 | clevermous | 413 | movzx eax, byte [ebp-12] |
414 | shl eax, 8 |
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3539 | clevermous | 415 | ;минута |
2288 | clevermous | 416 | mov al, [ebp-11] |
417 | shl eax, 8 |
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3539 | clevermous | 418 | ;секунда |
2288 | clevermous | 419 | mov al, [ebp-10] |
3539 | clevermous | 420 | ;время создания файла |
2288 | clevermous | 421 | mov [edi+8], eax |
3539 | clevermous | 422 | ;время последнего доступа |
2288 | clevermous | 423 | mov [edi+16], eax |
3539 | clevermous | 424 | ;время последней записи |
2288 | clevermous | 425 | mov [edi+24], eax |
3539 | clevermous | 426 | ; получаем дату для файла |
427 | ;год |
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2288 | clevermous | 428 | movzx eax, byte [ebp-15] |
429 | add eax, 1900 |
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430 | shl eax, 8 |
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3539 | clevermous | 431 | ;месяц |
2288 | clevermous | 432 | mov al, [ebp-14] |
433 | shl eax, 8 |
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3539 | clevermous | 434 | ;день |
2288 | clevermous | 435 | mov al, [ebp-13] |
3539 | clevermous | 436 | ;дата создания файла |
2288 | clevermous | 437 | mov [edi+12], eax |
3539 | clevermous | 438 | ;время последнего доступа |
2288 | clevermous | 439 | mov [edi+20], eax |
3539 | clevermous | 440 | ;время последней записи |
2288 | clevermous | 441 | mov [edi+28], eax |
3539 | clevermous | 442 | ; получаем тип данных имени |
2288 | clevermous | 443 | xor eax, eax |
444 | test dword [ebx+4], 1; 0=ANSI, 1=UNICODE |
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445 | jnz .unicode_1 |
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446 | mov [edi+4], eax |
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447 | jmp @f |
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448 | .unicode_1: |
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449 | inc eax |
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450 | mov [edi+4], eax |
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451 | @@: |
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3539 | clevermous | 452 | ; получаем размер файла в байтах |
2288 | clevermous | 453 | xor eax, eax |
454 | mov [edi+32+4], eax |
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455 | mov eax, [ebp-23] |
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456 | mov [edi+32], eax |
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457 | ret |
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458 | |||
459 | ;---------------------------------------------------------------- |
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460 | ; |
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461 | ; fs_CdGetFileInfo - LFN variant for CD |
||
462 | ; get file/directory attributes structure |
||
463 | ; |
||
464 | ;---------------------------------------------------------------- |
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465 | fs_CdGetFileInfo: |
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466 | cmp byte [esi], 0 |
||
467 | jnz @f |
||
468 | mov eax, 2 |
||
469 | ret |
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470 | @@: |
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471 | push edi |
||
472 | call cd_find_lfn |
||
473 | pushfd |
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474 | cmp [DevErrorCode], 0 |
||
475 | jz @f |
||
476 | popfd |
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477 | pop edi |
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478 | mov eax, 11 |
||
479 | ret |
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480 | @@: |
||
481 | popfd |
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482 | jnc @f |
||
483 | pop edi |
||
484 | mov eax, ERROR_FILE_NOT_FOUND |
||
485 | ret |
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486 | @@: |
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487 | |||
488 | mov edi, edx |
||
489 | push ebp |
||
490 | mov ebp, [cd_current_pointer_of_input] |
||
491 | add ebp, 33 |
||
492 | call cd_get_parameters_of_file_1 |
||
493 | pop ebp |
||
494 | and dword [edi+4], 0 |
||
495 | pop edi |
||
496 | xor eax, eax |
||
497 | ret |
||
498 | |||
499 | ;---------------------------------------------------------------- |
||
500 | cd_find_lfn: |
||
501 | mov [cd_appl_data], 0 |
||
502 | ; in: esi+ebp -> name |
||
503 | ; out: CF=1 - file not found |
||
504 | ; else CF=0 and [cd_current_pointer_of_input] direntry |
||
505 | push eax esi |
||
3539 | clevermous | 506 | ; 16 сектор начало набора дескрипторов томов |
2288 | clevermous | 507 | |
508 | call WaitUnitReady |
||
509 | cmp [DevErrorCode], 0 |
||
510 | jne .access_denied |
||
511 | |||
512 | call prevent_medium_removal |
||
3539 | clevermous | 513 | ; тестовое чтение |
2288 | clevermous | 514 | mov [CDSectorAddress], dword 16 |
515 | mov [CDDataBuf_pointer], CDDataBuf |
||
516 | call ReadCDWRetr;_1 |
||
517 | cmp [DevErrorCode], 0 |
||
518 | jne .access_denied |
||
519 | |||
3539 | clevermous | 520 | ; вычисление последней сессии |
2288 | clevermous | 521 | call WaitUnitReady |
522 | cmp [DevErrorCode], 0 |
||
523 | jne .access_denied |
||
524 | call Read_TOC |
||
525 | mov ah, [CDDataBuf+4+4] |
||
526 | mov al, [CDDataBuf+4+5] |
||
527 | shl eax, 16 |
||
528 | mov ah, [CDDataBuf+4+6] |
||
529 | mov al, [CDDataBuf+4+7] |
||
530 | add eax, 15 |
||
531 | mov [CDSectorAddress], eax |
||
532 | ; mov [CDSectorAddress],dword 15 |
||
533 | mov [CDDataBuf_pointer], CDDataBuf |
||
534 | |||
535 | .start: |
||
536 | inc dword [CDSectorAddress] |
||
537 | call ReadCDWRetr;_1 |
||
538 | cmp [DevErrorCode], 0 |
||
539 | jne .access_denied |
||
540 | |||
541 | .start_check: |
||
3539 | clevermous | 542 | ; проверка на вшивость |
2288 | clevermous | 543 | cmp [CDDataBuf+1], dword 'CD00' |
544 | jne .access_denied |
||
545 | cmp [CDDataBuf+5], byte '1' |
||
546 | jne .access_denied |
||
3539 | clevermous | 547 | ; сектор является терминатором набор дескрипторов томов? |
2288 | clevermous | 548 | cmp [CDDataBuf], byte 0xff |
549 | je .access_denied |
||
3539 | clevermous | 550 | ; сектор является дополнительным и улучшенным дескриптором тома? |
2288 | clevermous | 551 | cmp [CDDataBuf], byte 0x2 |
552 | jne .start |
||
3539 | clevermous | 553 | ; сектор является дополнительным дескриптором тома? |
2288 | clevermous | 554 | cmp [CDDataBuf+6], byte 0x1 |
555 | jne .start |
||
556 | |||
3539 | clevermous | 557 | ; параметры root директрории |
558 | mov eax, [CDDataBuf+0x9c+2]; начало root директрории |
||
2288 | clevermous | 559 | mov [CDSectorAddress], eax |
3539 | clevermous | 560 | mov eax, [CDDataBuf+0x9c+10]; размер root директрории |
2288 | clevermous | 561 | cmp byte [esi], 0 |
562 | jnz @f |
||
563 | mov [cd_current_pointer_of_input], CDDataBuf+0x9c |
||
564 | jmp .done |
||
565 | @@: |
||
3539 | clevermous | 566 | ; начинаем поиск |
2288 | clevermous | 567 | .mainloop: |
568 | dec dword [CDSectorAddress] |
||
569 | .read_to_buffer: |
||
570 | inc dword [CDSectorAddress] |
||
571 | mov [CDDataBuf_pointer], CDDataBuf |
||
3539 | clevermous | 572 | call ReadCDWRetr ; читаем сектор директории |
2288 | clevermous | 573 | cmp [DevErrorCode], 0 |
574 | jne .access_denied |
||
575 | push ebp |
||
576 | call cd_find_name_in_buffer |
||
577 | pop ebp |
||
578 | jnc .found |
||
579 | sub eax, 2048 |
||
3539 | clevermous | 580 | ; директория закончилась? |
2288 | clevermous | 581 | cmp eax, 0 |
582 | ja .read_to_buffer |
||
3539 | clevermous | 583 | ; нет искомого элемента цепочки |
2288 | clevermous | 584 | .access_denied: |
585 | pop esi eax |
||
586 | mov [cd_appl_data], 1 |
||
587 | stc |
||
588 | ret |
||
3539 | clevermous | 589 | ; искомый элемент цепочки найден |
2288 | clevermous | 590 | .found: |
3539 | clevermous | 591 | ; конец пути файла |
2288 | clevermous | 592 | cmp byte [esi-1], 0 |
593 | jz .done |
||
594 | .nested: |
||
595 | mov eax, [cd_current_pointer_of_input] |
||
596 | push dword [eax+2] |
||
3539 | clevermous | 597 | pop dword [CDSectorAddress] ; начало директории |
598 | mov eax, [eax+2+8]; размер директории |
||
2288 | clevermous | 599 | jmp .mainloop |
3539 | clevermous | 600 | ; указатель файла найден |
2288 | clevermous | 601 | .done: |
602 | test ebp, ebp |
||
603 | jz @f |
||
604 | mov esi, ebp |
||
605 | xor ebp, ebp |
||
606 | jmp .nested |
||
607 | @@: |
||
608 | pop esi eax |
||
609 | mov [cd_appl_data], 1 |
||
610 | clc |
||
611 | ret |
||
612 | |||
613 | cd_find_name_in_buffer: |
||
614 | mov [cd_current_pointer_of_input_2], CDDataBuf |
||
615 | .start: |
||
616 | call cd_get_name |
||
617 | jc .not_found |
||
618 | call cd_compare_name |
||
619 | jc .start |
||
620 | .found: |
||
621 | clc |
||
622 | ret |
||
623 | .not_found: |
||
624 | stc |
||
625 | ret |
||
626 | |||
627 | cd_get_name: |
||
628 | push eax |
||
629 | mov ebp, [cd_current_pointer_of_input_2] |
||
630 | mov [cd_current_pointer_of_input], ebp |
||
631 | mov eax, [ebp] |
||
3539 | clevermous | 632 | test eax, eax ; входы закончились? |
2288 | clevermous | 633 | jz .next_sector |
3539 | clevermous | 634 | cmp ebp, CDDataBuf+2048 ; буфер закончился? |
2288 | clevermous | 635 | jae .next_sector |
636 | movzx eax, byte [ebp] |
||
3539 | clevermous | 637 | add [cd_current_pointer_of_input_2], eax; следующий вход каталога |
638 | add ebp, 33; указатель установлен на начало имени |
||
2288 | clevermous | 639 | pop eax |
640 | clc |
||
641 | ret |
||
642 | .next_sector: |
||
643 | pop eax |
||
644 | stc |
||
645 | ret |
||
646 | |||
647 | cd_compare_name: |
||
648 | ; compares ASCIIZ-names, case-insensitive (cp866 encoding) |
||
649 | ; in: esi->name, ebp->name |
||
650 | ; out: if names match: ZF=1 and esi->next component of name |
||
651 | ; else: ZF=0, esi is not changed |
||
652 | ; destroys eax |
||
653 | push esi eax edi |
||
654 | mov edi, ebp |
||
655 | .loop: |
||
656 | cld |
||
657 | lodsb |
||
658 | push eax |
||
659 | call char_todown |
||
660 | call ansi2uni_char |
||
661 | xchg ah, al |
||
662 | scasw |
||
663 | pop eax |
||
664 | je .coincides |
||
665 | call char_toupper |
||
666 | call ansi2uni_char |
||
667 | xchg ah, al |
||
668 | sub edi, 2 |
||
669 | scasw |
||
670 | jne .name_not_coincide |
||
671 | .coincides: |
||
3539 | clevermous | 672 | cmp [esi], byte '/'; разделитель пути, конец имени текущего элемента |
2288 | clevermous | 673 | je .done |
3539 | clevermous | 674 | cmp [esi], byte 0; разделитель пути, конец имени текущего элемента |
2288 | clevermous | 675 | je .done |
676 | jmp .loop |
||
677 | .name_not_coincide: |
||
678 | pop edi eax esi |
||
679 | stc |
||
680 | ret |
||
681 | .done: |
||
3539 | clevermous | 682 | ; проверка конца файла |
683 | cmp [edi], word 3B00h; сепаратор конца файла ';' |
||
2288 | clevermous | 684 | je .done_1 |
3539 | clevermous | 685 | ; проверка для файлов не заканчивающихся сепаратором |
2288 | clevermous | 686 | movzx eax, byte [ebp-33] |
687 | add eax, ebp |
||
688 | sub eax, 34 |
||
689 | cmp edi, eax |
||
690 | je .done_1 |
||
3539 | clevermous | 691 | ; проверка конца папки |
2288 | clevermous | 692 | movzx eax, byte [ebp-1] |
693 | add eax, ebp |
||
694 | cmp edi, eax |
||
695 | jne .name_not_coincide |
||
696 | .done_1: |
||
697 | pop edi eax |
||
698 | add esp, 4 |
||
699 | inc esi |
||
700 | clc |
||
701 | ret |
||
702 | |||
703 | char_todown: |
||
704 | ; convert character to uppercase, using cp866 encoding |
||
705 | ; in: al=symbol |
||
706 | ; out: al=converted symbol |
||
707 | cmp al, 'A' |
||
708 | jb .ret |
||
709 | cmp al, 'Z' |
||
710 | jbe .az |
||
3539 | clevermous | 711 | cmp al, 0x80 ; 'А' |
2288 | clevermous | 712 | jb .ret |
3539 | clevermous | 713 | cmp al, 0x90 ; 'Р' |
2288 | clevermous | 714 | jb .rus1 |
3539 | clevermous | 715 | cmp al, 0x9F ; 'Я' |
2288 | clevermous | 716 | ja .ret |
717 | ; 0x90-0x9F -> 0xE0-0xEF |
||
3539 | clevermous | 718 | add al, 0xE0-0x90 |
2288 | clevermous | 719 | .ret: |
720 | ret |
||
721 | .rus1: |
||
722 | ; 0x80-0x8F -> 0xA0-0xAF |
||
723 | .az: |
||
724 | add al, 0x20 |
||
725 | ret |
||
726 | |||
727 | uni2ansi_char: |
||
728 | ; convert UNICODE character in al to ANSI character in ax, using cp866 encoding |
||
729 | ; in: ax=UNICODE character |
||
730 | ; out: al=converted ANSI character |
||
731 | cmp ax, 0x80 |
||
732 | jb .ascii |
||
733 | cmp ax, 0x401 |
||
734 | jz .yo1 |
||
735 | cmp ax, 0x451 |
||
736 | jz .yo2 |
||
737 | cmp ax, 0x410 |
||
738 | jb .unk |
||
739 | cmp ax, 0x440 |
||
740 | jb .rus1 |
||
741 | cmp ax, 0x450 |
||
742 | jb .rus2 |
||
743 | .unk: |
||
744 | mov al, '_' |
||
745 | jmp .doit |
||
746 | .yo1: |
||
3539 | clevermous | 747 | mov al, 0xF0 ; 'Ё' in cp866 |
2288 | clevermous | 748 | jmp .doit |
749 | .yo2: |
||
3539 | clevermous | 750 | mov al, 0xF1 ; 'ё' in cp866 |
2288 | clevermous | 751 | jmp .doit |
752 | .rus1: |
||
753 | ; 0x410-0x43F -> 0x80-0xAF |
||
754 | add al, 0x70 |
||
755 | jmp .doit |
||
756 | .rus2: |
||
757 | ; 0x440-0x44F -> 0xE0-0xEF |
||
758 | add al, 0xA0 |
||
759 | .ascii: |
||
760 | .doit: |
||
761 | ret |