1 /*****************************************************************************/
5 /* Read directory entry */
9 /* (C) 2005 Oliver Schmidt, <ol.sc@web.de> */
12 /* This software is provided 'as-is', without any expressed or implied */
13 /* warranty. In no event will the authors be held liable for any damages */
14 /* arising from the use of this software. */
16 /* Permission is granted to anyone to use this software for any purpose, */
17 /* including commercial applications, and to alter it and redistribute it */
18 /* freely, subject to the following restrictions: */
20 /* 1. The origin of this software must not be misrepresented; you must not */
21 /* claim that you wrote the original software. If you use this software */
22 /* in a product, an acknowledgment in the product documentation would be */
23 /* appreciated but is not required. */
24 /* 2. Altered source versions must be plainly marked as such, and must not */
25 /* be misrepresented as being the original software. */
26 /* 3. This notice may not be removed or altered from any source */
29 /*****************************************************************************/
40 /*****************************************************************************/
42 /*****************************************************************************/
46 struct dirent* __fastcall__ readdir (register DIR* dir)
48 register unsigned char* entry;
50 /* Search for the next active directory entry */
53 /* Read next directory block if necessary */
54 if (dir->current_entry == dir->entries_per_block) {
57 sizeof (dir->block)) != sizeof (dir->block)) {
59 /* Just return failure as read() has */
60 /* set errno if (and only if) no EOF */
64 /* Start with first entry in next block */
65 dir->current_entry = 0;
68 /* Compute pointer to current entry */
69 entry = dir->block.content.entries +
70 dir->current_entry * dir->entry_length;
72 /* Switch to next entry */
74 } while (entry[0x00] == 0);
76 /* Move creation date/time to allow for next step below */
77 *(unsigned long*)&entry[0x1A] = *(unsigned long*)&entry[0x18];
79 /* Feature unsigned long access to EOF by extension from 3 to 4 bytes */
82 /* Move file type to allow for next step below */
83 entry[0x19] = entry[0x10];
85 /* Zero-terminate file name */
86 entry[0x01 + (entry[0x00] & 0x0F)] = 0;
89 return (struct dirent*)&entry[0x01];