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pascal@19515
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1 #include "crtl.h"
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pascal@19515
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2 #include "crtlx.h"
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pascal@19515
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3 #include "iso9660.h"
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pascal@19515
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4 #define __ROCKRIDGE
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pascal@19515
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5
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pascal@19571
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6 struct isostate isostate;
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pascal@19515
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7
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pascal@20747
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8 #if 1
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pascal@20747
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9 #define setdirofs(to,sec) (*(int*)((char*)&(to)+1) = *(int*)&(sec)<<(SECTORBITS-8))
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pascal@20747
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10 #define cpydirofs(to,from) (*(int*)((char*)&(to)+1) = *(int*)((char*)&(from)+1))
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pascal@20747
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11 #else
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pascal@20747
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12 #define setdirofs(to,sec) (to = (sec)<<SECTORBITS)
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pascal@20747
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13 #define cpydirofs(to,from) ((to) = (from))
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pascal@20747
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14 #endif
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pascal@20747
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15
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pascal@21628
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16 int isoroot(void)
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pascal@19515
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17 {
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pascal@19825
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18 static const unsigned long root = 16UL * 2048;
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pascal@19571
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19 struct isostate *x=&isostate;
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pascal@21628
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20 if (isoreadsector(&root) == -1 || strhead(x->buffer+1,"CD001") == -1) {
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pascal@19571
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21 //close(x->fd);
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pascal@19515
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22 return -1;
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pascal@19515
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23 }
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pascal@20747
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24 setdirofs(x->dirofs, (* (unsigned long *) (isostate.buffer + 0x9E)));
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pascal@20632
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25 x->dirsize = filesize2dirsize(* (unsigned long *) (isostate.buffer + 0xA6));
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pascal@19515
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26 return 0;
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pascal@19515
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27 }
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pascal@19515
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28
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pascal@20747
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29 int isoreaddir(void)
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pascal@19515
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30 {
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pascal@19636
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31 char *p;
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pascal@19515
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32 #ifdef __ROCKRIDGE
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pascal@19515
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33 char *endname;
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pascal@19515
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34 #endif
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pascal@19571
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35 struct isostate *x=&isostate;
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pascal@19515
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36
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pascal@20747
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37 if (x->curdirsize == 0xFFFF) {
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pascal@19826
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38 x->curdirsize = x->dirsize;
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pascal@20747
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39 cpydirofs(x->curdirofs, x->dirofs);
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pascal@19826
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40 goto restarted;
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pascal@19515
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41 }
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pascal@20534
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42 if (x->curpos >= SECTORSZ || * (short *) (x->buffer + x->curpos) == 0) {
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pascal@20538
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43 restarted:
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pascal@19826
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44 if (x->curdirsize < DIRSECTORSZ) return -1;
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pascal@20534
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45 isoreadsector(&x->curdirofs);
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pascal@20453
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46 //x->curdirofs += SECTORSZ;
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pascal@20453
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47 *(int *)((char *) &x->curdirofs+1) += SECTORSZ/256;
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pascal@19826
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48 x->curdirsize -= DIRSECTORSZ;
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pascal@20458
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49 x->curpos = 0;
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pascal@19515
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50 }
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pascal@20534
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51 p = x->buffer; p += x->curpos;
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pascal@21735
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52 if ((x->entrysize = * (short *) p) == 0) {
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pascal@19515
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53 return -1;
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pascal@20538
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54 }
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pascal@19636
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55 x->fileofs = (* (unsigned long *) (p + 2)) << SECTORBITS;
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pascal@19636
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56 x->filesize = * (unsigned long *) (p + 10);
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pascal@20543
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57 x->filemod = 0x81ED; if (p[25] & 2) ((char *)&(x->filemod))[1] = 0x41;
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pascal@20543
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58 //x->filemod = (p[25] & 2) ? 0040755 : 0100755;
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pascal@20453
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59 //x->filemod = 0100755 - ((p[25] & (char)2) << 13);
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pascal@19515
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60 #ifdef __ROCKRIDGE
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pascal@19515
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61 endname = NULL;
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pascal@19636
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62 // p += 34 + (p[32] & -2); ?
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pascal@20534
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63 p = x->buffer + 34 + ((p[32] + x->curpos) & -2);
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pascal@19515
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64 do {
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pascal@19636
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65 int len = p[2];
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pascal@20751
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66 # if 0
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pascal@19636
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67 switch (* (short *) p) {
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pascal@19515
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68 case 0x5850: // PX
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pascal@19636
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69 x->filemod = * (short *) (p + 4);
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pascal@19515
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70 break;
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pascal@20751
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71 case 0x4D4E: // NM
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pascal@20751
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72 # else
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pascal@20751
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73 if (* (short *) p == 0x4D4E) {
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pascal@20751
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74 # endif
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pascal@20751
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75 x->filename = p + 5;
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pascal@20751
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76 endname = p + len;
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pascal@19515
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77 }
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pascal@19636
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78 p += len;
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pascal@21735
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79 } while (x->buffer + x->curpos + x->entrysize - 2 > p);
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pascal@19515
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80 if (endname)
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pascal@19515
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81 *endname = 0;
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pascal@19515
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82 else
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pascal@19515
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83 #endif
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pascal@19515
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84 {
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pascal@20534
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85 p = x->buffer + 33; x->filename = p += x->curpos;
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pascal@19636
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86 p--;
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pascal@20453
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87 if (((* (short *) p) & 0xFEFF) -1 == 0) {
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pascal@20453
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88 x->filename = "..";
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pascal@20453
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89 if ((* (short *) p) == 1)
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pascal@20453
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90 x->filename++;
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pascal@20453
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91 }
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pascal@20453
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92 else {
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pascal@19636
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93 p += *p; p--;
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pascal@19636
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94 if (* (short *) (p) != 0x313B) {
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pascal@19636
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95 p++; p++; // no ;1 to remove
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pascal@19636
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96 }
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pascal@19636
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97 if (p[-1] == '.') p--;
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pascal@19636
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98 *p = 0;
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pascal@19515
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99 }
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pascal@19515
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100 }
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pascal@21735
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101 x->curpos += x->entrysize;
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pascal@19515
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102 return 0;
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pascal@19515
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103 }
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pascal@19515
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104
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pascal@19825
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105 //#define IS_DIR(x)( ((x) & ~0777) == 040000)
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pascal@20454
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106 //#define IS_DIR(x)( (char)((x) >> 9) == (char)040)
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pascal@20454
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107 //#define IS_DIR(x)( (*((char*) &x + 1) & (char)0776) == (char)0100)
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pascal@20454
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108 #define IS_DIR(x)( (*((char*) &x + 1) & (char)0676) == (char)0)
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pascal@21628
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109 int _isoopen(void)
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pascal@19515
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110 {
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pascal@21735
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111 // char *name, *s, c;
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pascal@21735
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112 // char _64bits = cpuhaslm();
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pascal@19571
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113 struct isostate *x=&isostate;
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pascal@21735
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114 #define name (x->filename2open)
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pascal@21735
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115 #define c (((char *)&x->entrysize)[0])
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pascal@21735
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116 #define _64bits (((char *)&x->entrysize)[1])
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pascal@21735
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117 char *s;
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pascal@19515
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118
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pascal@21735
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119 _64bits = cpuhaslm();
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pascal@20528
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120 do {
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pascal@21628
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121 for (s = (char *) x->filename2open; *s == '/' ; s++) {
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pascal@21628
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122 isoroot();
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pascal@19515
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123 }
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pascal@19825
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124 next:
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pascal@20751
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125 name = s;
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pascal@20751
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126 do s++; while (*s != '/' && *s);
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pascal@19825
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127 c = *s;
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pascal@19825
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128 *s = 0;
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pascal@21576
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129 for (x->curdirsize = 0xFFFF; isoreaddir() != -1;) {
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pascal@21735
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130 const char *n = name;
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pascal@21735
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131 #define i (x->tmp)
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pascal@21735
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132 i = x->filename;
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pascal@19825
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133 if (_64bits) {
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pascal@21628
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134 if (strhead(i, n) == -1) continue;
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pascal@19825
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135 n = "64";
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pascal@19825
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136 i += s - name; // strlen(name);
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pascal@19515
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137 }
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pascal@19825
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138 if (strcmp(i, n)) continue;
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pascal@19825
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139 *s++ = c;
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pascal@19825
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140 if (IS_DIR(x->filemod)) {
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pascal@20747
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141 cpydirofs(x->dirofs, x->fileofs);
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pascal@19826
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142 x->dirsize = filesize2dirsize(x->filesize);
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pascal@19825
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143 if (c) goto next;
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pascal@19515
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144 }
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pascal@19825
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145 isolseek(&x->fileofs);
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pascal@19825
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146 return 0;
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pascal@19515
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147 }
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pascal@20528
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148 } while ((_64bits ^= CPUMASKLM) == 0);
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pascal@19825
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149 return -1;
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pascal@19515
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150 }
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