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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: 3742 $ |
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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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3742 | clevermous | 45 | pushad |
46 | mov ecx, ide_channel1_mutex |
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47 | call mutex_lock |
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2288 | clevermous | 48 | mov [IDE_Channel_1], 1 |
3742 | clevermous | 49 | popad |
2288 | clevermous | 50 | ret |
3742 | clevermous | 51 | .IDE_Channel_2: |
52 | pushad |
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53 | mov ecx, ide_channel2_mutex |
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54 | call mutex_lock |
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2288 | clevermous | 55 | mov [IDE_Channel_2], 1 |
3742 | clevermous | 56 | popad |
2288 | clevermous | 57 | ret |
58 | |||
59 | free_cd_channel: |
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60 | cmp [ChannelNumber], 1 |
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61 | jne .IDE_Channel_2 |
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62 | .IDE_Channel_1: |
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63 | mov [IDE_Channel_1], 0 |
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3742 | clevermous | 64 | pushad |
65 | mov ecx, ide_channel1_mutex |
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66 | call mutex_unlock |
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67 | popad |
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2288 | clevermous | 68 | ret |
69 | .IDE_Channel_2: |
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70 | mov [IDE_Channel_2], 0 |
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3742 | clevermous | 71 | pushad |
72 | mov ecx, ide_channel2_mutex |
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73 | call mutex_unlock |
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74 | popad |
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2288 | clevermous | 75 | ret |
76 | |||
77 | uglobal |
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78 | cd_status dd 0 |
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79 | endg |
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80 | |||
81 | ;---------------------------------------------------------------- |
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82 | ; |
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83 | ; fs_CdRead - LFN variant for reading CD disk |
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84 | ; |
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85 | ; esi points to filename /dir1/dir2/.../dirn/file,0 |
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86 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
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87 | ; may be ebx=0 - start from first byte |
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88 | ; ecx number of bytes to read, 0+ |
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89 | ; edx mem location to return data |
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90 | ; |
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91 | ; ret ebx = bytes read or 0xffffffff file not found |
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92 | ; eax = 0 ok read or other = errormsg |
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93 | ; |
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94 | ;-------------------------------------------------------------- |
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95 | fs_CdRead: |
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96 | push edi |
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97 | cmp byte [esi], 0 |
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98 | jnz @f |
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99 | .noaccess: |
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100 | pop edi |
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101 | .noaccess_2: |
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102 | or ebx, -1 |
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103 | mov eax, ERROR_ACCESS_DENIED |
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104 | ret |
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105 | |||
106 | .noaccess_3: |
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107 | pop eax edx ecx edi |
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108 | jmp .noaccess_2 |
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109 | |||
110 | @@: |
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111 | call cd_find_lfn |
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112 | jnc .found |
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113 | pop edi |
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114 | cmp [DevErrorCode], 0 |
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115 | jne .noaccess_2 |
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116 | or ebx, -1 |
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117 | mov eax, ERROR_FILE_NOT_FOUND |
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118 | ret |
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119 | |||
120 | .found: |
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121 | mov edi, [cd_current_pointer_of_input] |
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122 | test byte [edi+25], 10b; do not allow read directories |
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123 | jnz .noaccess |
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124 | test ebx, ebx |
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125 | jz .l1 |
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126 | cmp dword [ebx+4], 0 |
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127 | jz @f |
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128 | xor ebx, ebx |
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129 | .reteof: |
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130 | mov eax, 6; end of file |
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131 | pop edi |
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132 | ret |
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133 | @@: |
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134 | mov ebx, [ebx] |
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135 | .l1: |
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136 | push ecx edx |
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137 | push 0 |
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3539 | clevermous | 138 | mov eax, [edi+10] ; реальный размер файловой секции |
2288 | clevermous | 139 | sub eax, ebx |
140 | jb .eof |
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141 | cmp eax, ecx |
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142 | jae @f |
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143 | mov ecx, eax |
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144 | mov byte [esp], 6 |
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145 | @@: |
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146 | mov eax, [edi+2] |
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147 | mov [CDSectorAddress], eax |
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148 | ; now eax=cluster, ebx=position, ecx=count, edx=buffer for data |
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149 | .new_sector: |
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150 | test ecx, ecx |
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151 | jz .done |
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152 | sub ebx, 2048 |
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153 | jae .next |
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154 | add ebx, 2048 |
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155 | jnz .incomplete_sector |
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156 | cmp ecx, 2048 |
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157 | jb .incomplete_sector |
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158 | ; we may read and memmove complete sector |
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159 | mov [CDDataBuf_pointer], edx |
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3539 | clevermous | 160 | call ReadCDWRetr; читаем сектор файла |
2288 | clevermous | 161 | cmp [DevErrorCode], 0 |
162 | jne .noaccess_3 |
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163 | add edx, 2048 |
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164 | sub ecx, 2048 |
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165 | .next: |
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166 | inc dword [CDSectorAddress] |
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167 | jmp .new_sector |
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168 | .incomplete_sector: |
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169 | ; we must read and memmove incomplete sector |
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170 | mov [CDDataBuf_pointer], CDDataBuf |
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3539 | clevermous | 171 | call ReadCDWRetr; читаем сектор файла |
2288 | clevermous | 172 | cmp [DevErrorCode], 0 |
173 | jne .noaccess_3 |
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174 | push ecx |
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175 | add ecx, ebx |
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176 | cmp ecx, 2048 |
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177 | jbe @f |
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178 | mov ecx, 2048 |
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179 | @@: |
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180 | sub ecx, ebx |
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181 | push edi esi ecx |
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182 | mov edi, edx |
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183 | lea esi, [CDDataBuf + ebx] |
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184 | cld |
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185 | rep movsb |
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186 | pop ecx esi edi |
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187 | add edx, ecx |
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188 | sub [esp], ecx |
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189 | pop ecx |
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190 | xor ebx, ebx |
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191 | jmp .next |
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192 | |||
193 | .done: |
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194 | mov ebx, edx |
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195 | pop eax edx ecx edi |
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196 | sub ebx, edx |
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197 | ret |
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198 | .eof: |
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199 | mov ebx, edx |
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200 | pop eax edx ecx |
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201 | sub ebx, edx |
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202 | jmp .reteof |
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203 | |||
204 | ;---------------------------------------------------------------- |
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205 | ; |
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206 | ; fs_CdReadFolder - LFN variant for reading CD disk folder |
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207 | ; |
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208 | ; esi points to filename /dir1/dir2/.../dirn/file,0 |
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209 | ; ebx pointer to structure 32-bit number = first wanted block, 0+ |
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210 | ; & flags (bitfields) |
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211 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
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212 | ; ecx number of blocks to read, 0+ |
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213 | ; edx mem location to return data |
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214 | ; |
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215 | ; ret ebx = blocks read or 0xffffffff folder not found |
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216 | ; eax = 0 ok read or other = errormsg |
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217 | ; |
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218 | ;-------------------------------------------------------------- |
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219 | fs_CdReadFolder: |
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220 | push edi |
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221 | call cd_find_lfn |
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222 | jnc .found |
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223 | pop edi |
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224 | cmp [DevErrorCode], 0 |
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225 | jne .noaccess_1 |
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226 | or ebx, -1 |
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227 | mov eax, ERROR_FILE_NOT_FOUND |
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228 | ret |
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229 | .found: |
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230 | mov edi, [cd_current_pointer_of_input] |
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231 | test byte [edi+25], 10b ; do not allow read directories |
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232 | jnz .found_dir |
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233 | pop edi |
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234 | .noaccess_1: |
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235 | or ebx, -1 |
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236 | mov eax, ERROR_ACCESS_DENIED |
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237 | ret |
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238 | .found_dir: |
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239 | mov eax, [edi+2] ; eax=cluster |
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240 | mov [CDSectorAddress], eax |
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3539 | clevermous | 241 | mov eax, [edi+10] ; размер директрории |
2288 | clevermous | 242 | .doit: |
243 | ; init header |
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244 | push eax ecx |
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245 | mov edi, edx |
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246 | mov ecx, 32/4 |
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247 | xor eax, eax |
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248 | rep stosd |
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249 | pop ecx eax |
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250 | mov byte [edx], 1 ; version |
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251 | mov [cd_mem_location], edx |
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252 | add [cd_mem_location], 32 |
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3539 | clevermous | 253 | ; начинаем переброску БДВК в УСВК |
2288 | clevermous | 254 | ;.mainloop: |
255 | mov [cd_counter_block], dword 0 |
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256 | dec dword [CDSectorAddress] |
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257 | push ecx |
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258 | .read_to_buffer: |
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259 | inc dword [CDSectorAddress] |
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260 | mov [CDDataBuf_pointer], CDDataBuf |
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3539 | clevermous | 261 | call ReadCDWRetr ; читаем сектор директории |
2288 | clevermous | 262 | cmp [DevErrorCode], 0 |
263 | jne .noaccess_1 |
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264 | call .get_names_from_buffer |
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265 | sub eax, 2048 |
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3539 | clevermous | 266 | ; директория закончилась? |
2288 | clevermous | 267 | ja .read_to_buffer |
268 | mov edi, [cd_counter_block] |
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269 | mov [edx+8], edi |
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270 | mov edi, [ebx] |
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271 | sub [edx+4], edi |
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272 | xor eax, eax |
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273 | dec ecx |
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274 | js @f |
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275 | mov al, ERROR_END_OF_FILE |
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276 | @@: |
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277 | pop ecx edi |
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278 | mov ebx, [edx+4] |
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279 | ret |
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280 | |||
281 | .get_names_from_buffer: |
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282 | mov [cd_current_pointer_of_input_2], CDDataBuf |
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283 | push eax esi edi edx |
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284 | .get_names_from_buffer_1: |
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285 | call cd_get_name |
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286 | jc .end_buffer |
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287 | inc dword [cd_counter_block] |
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288 | mov eax, [cd_counter_block] |
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289 | cmp [ebx], eax |
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290 | jae .get_names_from_buffer_1 |
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291 | test ecx, ecx |
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292 | jz .get_names_from_buffer_1 |
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293 | mov edi, [cd_counter_block] |
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294 | mov [edx+4], edi |
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295 | dec ecx |
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296 | mov esi, ebp |
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297 | mov edi, [cd_mem_location] |
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298 | add edi, 40 |
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299 | test dword [ebx+4], 1; 0=ANSI, 1=UNICODE |
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300 | jnz .unicode |
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301 | ; jmp .unicode |
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302 | .ansi: |
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303 | cmp [cd_counter_block], 2 |
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304 | jbe .ansi_parent_directory |
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305 | cld |
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306 | lodsw |
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307 | xchg ah, al |
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308 | call uni2ansi_char |
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309 | cld |
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310 | stosb |
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3539 | clevermous | 311 | ; проверка конца файла |
2288 | clevermous | 312 | mov ax, [esi] |
3539 | clevermous | 313 | cmp ax, word 3B00h; сепаратор конца файла ';' |
2288 | clevermous | 314 | je .cd_get_parameters_of_file_1 |
3539 | clevermous | 315 | ; проверка для файлов не заканчивающихся сепаратором |
2288 | clevermous | 316 | movzx eax, byte [ebp-33] |
317 | add eax, ebp |
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318 | sub eax, 34 |
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319 | cmp esi, eax |
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320 | je .cd_get_parameters_of_file_1 |
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3539 | clevermous | 321 | ; проверка конца папки |
2288 | clevermous | 322 | movzx eax, byte [ebp-1] |
323 | add eax, ebp |
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324 | cmp esi, eax |
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325 | jb .ansi |
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326 | .cd_get_parameters_of_file_1: |
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327 | mov [edi], byte 0 |
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328 | call cd_get_parameters_of_file |
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329 | add [cd_mem_location], 304 |
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330 | jmp .get_names_from_buffer_1 |
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331 | |||
332 | .ansi_parent_directory: |
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333 | cmp [cd_counter_block], 2 |
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334 | je @f |
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335 | mov [edi], byte '.' |
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336 | inc edi |
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337 | jmp .cd_get_parameters_of_file_1 |
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338 | @@: |
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339 | mov [edi], word '..' |
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340 | add edi, 2 |
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341 | jmp .cd_get_parameters_of_file_1 |
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342 | |||
343 | .unicode: |
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344 | cmp [cd_counter_block], 2 |
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345 | jbe .unicode_parent_directory |
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346 | cld |
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347 | movsw |
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3539 | clevermous | 348 | ; проверка конца файла |
2288 | clevermous | 349 | mov ax, [esi] |
3539 | clevermous | 350 | cmp ax, word 3B00h; сепаратор конца файла ';' |
2288 | clevermous | 351 | je .cd_get_parameters_of_file_2 |
3539 | clevermous | 352 | ; проверка для файлов не заканчивающихся сепаратором |
2288 | clevermous | 353 | movzx eax, byte [ebp-33] |
354 | add eax, ebp |
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355 | sub eax, 34 |
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356 | cmp esi, eax |
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357 | je .cd_get_parameters_of_file_2 |
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3539 | clevermous | 358 | ; проверка конца папки |
2288 | clevermous | 359 | movzx eax, byte [ebp-1] |
360 | add eax, ebp |
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361 | cmp esi, eax |
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362 | jb .unicode |
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363 | .cd_get_parameters_of_file_2: |
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364 | mov [edi], word 0 |
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365 | call cd_get_parameters_of_file |
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366 | add [cd_mem_location], 560 |
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367 | jmp .get_names_from_buffer_1 |
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368 | |||
369 | .unicode_parent_directory: |
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370 | cmp [cd_counter_block], 2 |
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371 | je @f |
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372 | mov [edi], word 2E00h; '.' |
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373 | add edi, 2 |
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374 | jmp .cd_get_parameters_of_file_2 |
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375 | @@: |
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376 | mov [edi], dword 2E002E00h; '..' |
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377 | add edi, 4 |
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378 | jmp .cd_get_parameters_of_file_2 |
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379 | |||
380 | .end_buffer: |
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381 | pop edx edi esi eax |
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382 | ret |
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383 | |||
384 | cd_get_parameters_of_file: |
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385 | mov edi, [cd_mem_location] |
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386 | cd_get_parameters_of_file_1: |
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3539 | clevermous | 387 | ; получаем атрибуты файла |
2288 | clevermous | 388 | xor eax, eax |
3539 | clevermous | 389 | ; файл не архивировался |
2288 | clevermous | 390 | inc eax |
391 | shl eax, 1 |
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3539 | clevermous | 392 | ; это каталог? |
2288 | clevermous | 393 | test [ebp-8], byte 2 |
394 | jz .file |
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395 | inc eax |
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396 | .file: |
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3539 | clevermous | 397 | ; метка тома не как в FAT, в этом виде отсутсвует |
398 | ; файл не является системным |
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2288 | clevermous | 399 | shl eax, 3 |
3539 | clevermous | 400 | ; файл является скрытым? (атрибут существование) |
2288 | clevermous | 401 | test [ebp-8], byte 1 |
402 | jz .hidden |
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403 | inc eax |
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404 | .hidden: |
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405 | shl eax, 1 |
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3539 | clevermous | 406 | ; файл всегда только для чтения, так как это CD |
2288 | clevermous | 407 | inc eax |
408 | mov [edi], eax |
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3539 | clevermous | 409 | ; получаем время для файла |
410 | ;час |
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2288 | clevermous | 411 | movzx eax, byte [ebp-12] |
412 | shl eax, 8 |
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3539 | clevermous | 413 | ;минута |
2288 | clevermous | 414 | mov al, [ebp-11] |
415 | shl eax, 8 |
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3539 | clevermous | 416 | ;секунда |
2288 | clevermous | 417 | mov al, [ebp-10] |
3539 | clevermous | 418 | ;время создания файла |
2288 | clevermous | 419 | mov [edi+8], eax |
3539 | clevermous | 420 | ;время последнего доступа |
2288 | clevermous | 421 | mov [edi+16], eax |
3539 | clevermous | 422 | ;время последней записи |
2288 | clevermous | 423 | mov [edi+24], eax |
3539 | clevermous | 424 | ; получаем дату для файла |
425 | ;год |
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2288 | clevermous | 426 | movzx eax, byte [ebp-15] |
427 | add eax, 1900 |
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428 | shl eax, 8 |
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3539 | clevermous | 429 | ;месяц |
2288 | clevermous | 430 | mov al, [ebp-14] |
431 | shl eax, 8 |
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3539 | clevermous | 432 | ;день |
2288 | clevermous | 433 | mov al, [ebp-13] |
3539 | clevermous | 434 | ;дата создания файла |
2288 | clevermous | 435 | mov [edi+12], eax |
3539 | clevermous | 436 | ;время последнего доступа |
2288 | clevermous | 437 | mov [edi+20], eax |
3539 | clevermous | 438 | ;время последней записи |
2288 | clevermous | 439 | mov [edi+28], eax |
3539 | clevermous | 440 | ; получаем тип данных имени |
2288 | clevermous | 441 | xor eax, eax |
442 | test dword [ebx+4], 1; 0=ANSI, 1=UNICODE |
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443 | jnz .unicode_1 |
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444 | mov [edi+4], eax |
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445 | jmp @f |
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446 | .unicode_1: |
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447 | inc eax |
||
448 | mov [edi+4], eax |
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449 | @@: |
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3539 | clevermous | 450 | ; получаем размер файла в байтах |
2288 | clevermous | 451 | xor eax, eax |
452 | mov [edi+32+4], eax |
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453 | mov eax, [ebp-23] |
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454 | mov [edi+32], eax |
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455 | ret |
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456 | |||
457 | ;---------------------------------------------------------------- |
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458 | ; |
||
459 | ; fs_CdGetFileInfo - LFN variant for CD |
||
460 | ; get file/directory attributes structure |
||
461 | ; |
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462 | ;---------------------------------------------------------------- |
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463 | fs_CdGetFileInfo: |
||
464 | cmp byte [esi], 0 |
||
465 | jnz @f |
||
466 | mov eax, 2 |
||
467 | ret |
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468 | @@: |
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469 | push edi |
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470 | call cd_find_lfn |
||
471 | pushfd |
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472 | cmp [DevErrorCode], 0 |
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473 | jz @f |
||
474 | popfd |
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475 | pop edi |
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476 | mov eax, 11 |
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477 | ret |
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478 | @@: |
||
479 | popfd |
||
480 | jnc @f |
||
481 | pop edi |
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482 | mov eax, ERROR_FILE_NOT_FOUND |
||
483 | ret |
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484 | @@: |
||
485 | |||
486 | mov edi, edx |
||
487 | push ebp |
||
488 | mov ebp, [cd_current_pointer_of_input] |
||
489 | add ebp, 33 |
||
490 | call cd_get_parameters_of_file_1 |
||
491 | pop ebp |
||
492 | and dword [edi+4], 0 |
||
493 | pop edi |
||
494 | xor eax, eax |
||
495 | ret |
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496 | |||
497 | ;---------------------------------------------------------------- |
||
498 | cd_find_lfn: |
||
499 | mov [cd_appl_data], 0 |
||
500 | ; in: esi+ebp -> name |
||
501 | ; out: CF=1 - file not found |
||
502 | ; else CF=0 and [cd_current_pointer_of_input] direntry |
||
503 | push eax esi |
||
3539 | clevermous | 504 | ; 16 сектор начало набора дескрипторов томов |
2288 | clevermous | 505 | |
506 | call WaitUnitReady |
||
507 | cmp [DevErrorCode], 0 |
||
508 | jne .access_denied |
||
509 | |||
510 | call prevent_medium_removal |
||
3539 | clevermous | 511 | ; тестовое чтение |
2288 | clevermous | 512 | mov [CDSectorAddress], dword 16 |
513 | mov [CDDataBuf_pointer], CDDataBuf |
||
514 | call ReadCDWRetr;_1 |
||
515 | cmp [DevErrorCode], 0 |
||
516 | jne .access_denied |
||
517 | |||
3539 | clevermous | 518 | ; вычисление последней сессии |
2288 | clevermous | 519 | call WaitUnitReady |
520 | cmp [DevErrorCode], 0 |
||
521 | jne .access_denied |
||
522 | call Read_TOC |
||
523 | mov ah, [CDDataBuf+4+4] |
||
524 | mov al, [CDDataBuf+4+5] |
||
525 | shl eax, 16 |
||
526 | mov ah, [CDDataBuf+4+6] |
||
527 | mov al, [CDDataBuf+4+7] |
||
528 | add eax, 15 |
||
529 | mov [CDSectorAddress], eax |
||
530 | ; mov [CDSectorAddress],dword 15 |
||
531 | mov [CDDataBuf_pointer], CDDataBuf |
||
532 | |||
533 | .start: |
||
534 | inc dword [CDSectorAddress] |
||
535 | call ReadCDWRetr;_1 |
||
536 | cmp [DevErrorCode], 0 |
||
537 | jne .access_denied |
||
538 | |||
539 | .start_check: |
||
3539 | clevermous | 540 | ; проверка на вшивость |
2288 | clevermous | 541 | cmp [CDDataBuf+1], dword 'CD00' |
542 | jne .access_denied |
||
543 | cmp [CDDataBuf+5], byte '1' |
||
544 | jne .access_denied |
||
3539 | clevermous | 545 | ; сектор является терминатором набор дескрипторов томов? |
2288 | clevermous | 546 | cmp [CDDataBuf], byte 0xff |
547 | je .access_denied |
||
3539 | clevermous | 548 | ; сектор является дополнительным и улучшенным дескриптором тома? |
2288 | clevermous | 549 | cmp [CDDataBuf], byte 0x2 |
550 | jne .start |
||
3539 | clevermous | 551 | ; сектор является дополнительным дескриптором тома? |
2288 | clevermous | 552 | cmp [CDDataBuf+6], byte 0x1 |
553 | jne .start |
||
554 | |||
3539 | clevermous | 555 | ; параметры root директрории |
556 | mov eax, [CDDataBuf+0x9c+2]; начало root директрории |
||
2288 | clevermous | 557 | mov [CDSectorAddress], eax |
3539 | clevermous | 558 | mov eax, [CDDataBuf+0x9c+10]; размер root директрории |
2288 | clevermous | 559 | cmp byte [esi], 0 |
560 | jnz @f |
||
561 | mov [cd_current_pointer_of_input], CDDataBuf+0x9c |
||
562 | jmp .done |
||
563 | @@: |
||
3539 | clevermous | 564 | ; начинаем поиск |
2288 | clevermous | 565 | .mainloop: |
566 | dec dword [CDSectorAddress] |
||
567 | .read_to_buffer: |
||
568 | inc dword [CDSectorAddress] |
||
569 | mov [CDDataBuf_pointer], CDDataBuf |
||
3539 | clevermous | 570 | call ReadCDWRetr ; читаем сектор директории |
2288 | clevermous | 571 | cmp [DevErrorCode], 0 |
572 | jne .access_denied |
||
573 | push ebp |
||
574 | call cd_find_name_in_buffer |
||
575 | pop ebp |
||
576 | jnc .found |
||
577 | sub eax, 2048 |
||
3539 | clevermous | 578 | ; директория закончилась? |
2288 | clevermous | 579 | cmp eax, 0 |
580 | ja .read_to_buffer |
||
3539 | clevermous | 581 | ; нет искомого элемента цепочки |
2288 | clevermous | 582 | .access_denied: |
583 | pop esi eax |
||
584 | mov [cd_appl_data], 1 |
||
585 | stc |
||
586 | ret |
||
3539 | clevermous | 587 | ; искомый элемент цепочки найден |
2288 | clevermous | 588 | .found: |
3539 | clevermous | 589 | ; конец пути файла |
2288 | clevermous | 590 | cmp byte [esi-1], 0 |
591 | jz .done |
||
592 | .nested: |
||
593 | mov eax, [cd_current_pointer_of_input] |
||
594 | push dword [eax+2] |
||
3539 | clevermous | 595 | pop dword [CDSectorAddress] ; начало директории |
596 | mov eax, [eax+2+8]; размер директории |
||
2288 | clevermous | 597 | jmp .mainloop |
3539 | clevermous | 598 | ; указатель файла найден |
2288 | clevermous | 599 | .done: |
600 | test ebp, ebp |
||
601 | jz @f |
||
602 | mov esi, ebp |
||
603 | xor ebp, ebp |
||
604 | jmp .nested |
||
605 | @@: |
||
606 | pop esi eax |
||
607 | mov [cd_appl_data], 1 |
||
608 | clc |
||
609 | ret |
||
610 | |||
611 | cd_find_name_in_buffer: |
||
612 | mov [cd_current_pointer_of_input_2], CDDataBuf |
||
613 | .start: |
||
614 | call cd_get_name |
||
615 | jc .not_found |
||
616 | call cd_compare_name |
||
617 | jc .start |
||
618 | .found: |
||
619 | clc |
||
620 | ret |
||
621 | .not_found: |
||
622 | stc |
||
623 | ret |
||
624 | |||
625 | cd_get_name: |
||
626 | push eax |
||
627 | mov ebp, [cd_current_pointer_of_input_2] |
||
628 | mov [cd_current_pointer_of_input], ebp |
||
629 | mov eax, [ebp] |
||
3539 | clevermous | 630 | test eax, eax ; входы закончились? |
2288 | clevermous | 631 | jz .next_sector |
3539 | clevermous | 632 | cmp ebp, CDDataBuf+2048 ; буфер закончился? |
2288 | clevermous | 633 | jae .next_sector |
634 | movzx eax, byte [ebp] |
||
3539 | clevermous | 635 | add [cd_current_pointer_of_input_2], eax; следующий вход каталога |
636 | add ebp, 33; указатель установлен на начало имени |
||
2288 | clevermous | 637 | pop eax |
638 | clc |
||
639 | ret |
||
640 | .next_sector: |
||
641 | pop eax |
||
642 | stc |
||
643 | ret |
||
644 | |||
645 | cd_compare_name: |
||
646 | ; compares ASCIIZ-names, case-insensitive (cp866 encoding) |
||
647 | ; in: esi->name, ebp->name |
||
648 | ; out: if names match: ZF=1 and esi->next component of name |
||
649 | ; else: ZF=0, esi is not changed |
||
650 | ; destroys eax |
||
651 | push esi eax edi |
||
652 | mov edi, ebp |
||
653 | .loop: |
||
654 | cld |
||
655 | lodsb |
||
656 | push eax |
||
657 | call char_todown |
||
658 | call ansi2uni_char |
||
659 | xchg ah, al |
||
660 | scasw |
||
661 | pop eax |
||
662 | je .coincides |
||
663 | call char_toupper |
||
664 | call ansi2uni_char |
||
665 | xchg ah, al |
||
666 | sub edi, 2 |
||
667 | scasw |
||
668 | jne .name_not_coincide |
||
669 | .coincides: |
||
3539 | clevermous | 670 | cmp [esi], byte '/'; разделитель пути, конец имени текущего элемента |
2288 | clevermous | 671 | je .done |
3539 | clevermous | 672 | cmp [esi], byte 0; разделитель пути, конец имени текущего элемента |
2288 | clevermous | 673 | je .done |
674 | jmp .loop |
||
675 | .name_not_coincide: |
||
676 | pop edi eax esi |
||
677 | stc |
||
678 | ret |
||
679 | .done: |
||
3539 | clevermous | 680 | ; проверка конца файла |
681 | cmp [edi], word 3B00h; сепаратор конца файла ';' |
||
2288 | clevermous | 682 | je .done_1 |
3539 | clevermous | 683 | ; проверка для файлов не заканчивающихся сепаратором |
2288 | clevermous | 684 | movzx eax, byte [ebp-33] |
685 | add eax, ebp |
||
686 | sub eax, 34 |
||
687 | cmp edi, eax |
||
688 | je .done_1 |
||
3539 | clevermous | 689 | ; проверка конца папки |
2288 | clevermous | 690 | movzx eax, byte [ebp-1] |
691 | add eax, ebp |
||
692 | cmp edi, eax |
||
693 | jne .name_not_coincide |
||
694 | .done_1: |
||
695 | pop edi eax |
||
696 | add esp, 4 |
||
697 | inc esi |
||
698 | clc |
||
699 | ret |
||
700 | |||
701 | char_todown: |
||
702 | ; convert character to uppercase, using cp866 encoding |
||
703 | ; in: al=symbol |
||
704 | ; out: al=converted symbol |
||
705 | cmp al, 'A' |
||
706 | jb .ret |
||
707 | cmp al, 'Z' |
||
708 | jbe .az |
||
3539 | clevermous | 709 | cmp al, 0x80 ; 'А' |
2288 | clevermous | 710 | jb .ret |
3539 | clevermous | 711 | cmp al, 0x90 ; 'Р' |
2288 | clevermous | 712 | jb .rus1 |
3539 | clevermous | 713 | cmp al, 0x9F ; 'Я' |
2288 | clevermous | 714 | ja .ret |
715 | ; 0x90-0x9F -> 0xE0-0xEF |
||
3539 | clevermous | 716 | add al, 0xE0-0x90 |
2288 | clevermous | 717 | .ret: |
718 | ret |
||
719 | .rus1: |
||
720 | ; 0x80-0x8F -> 0xA0-0xAF |
||
721 | .az: |
||
722 | add al, 0x20 |
||
723 | ret |
||
724 | |||
725 | uni2ansi_char: |
||
726 | ; convert UNICODE character in al to ANSI character in ax, using cp866 encoding |
||
727 | ; in: ax=UNICODE character |
||
728 | ; out: al=converted ANSI character |
||
729 | cmp ax, 0x80 |
||
730 | jb .ascii |
||
731 | cmp ax, 0x401 |
||
732 | jz .yo1 |
||
733 | cmp ax, 0x451 |
||
734 | jz .yo2 |
||
735 | cmp ax, 0x410 |
||
736 | jb .unk |
||
737 | cmp ax, 0x440 |
||
738 | jb .rus1 |
||
739 | cmp ax, 0x450 |
||
740 | jb .rus2 |
||
741 | .unk: |
||
742 | mov al, '_' |
||
743 | jmp .doit |
||
744 | .yo1: |
||
3539 | clevermous | 745 | mov al, 0xF0 ; 'Ё' in cp866 |
2288 | clevermous | 746 | jmp .doit |
747 | .yo2: |
||
3539 | clevermous | 748 | mov al, 0xF1 ; 'ё' in cp866 |
2288 | clevermous | 749 | jmp .doit |
750 | .rus1: |
||
751 | ; 0x410-0x43F -> 0x80-0xAF |
||
752 | add al, 0x70 |
||
753 | jmp .doit |
||
754 | .rus2: |
||
755 | ; 0x440-0x44F -> 0xE0-0xEF |
||
756 | add al, 0xA0 |
||
757 | .ascii: |
||
758 | .doit: |
||
759 | ret |