307 lines
7.2 KiB
C++
307 lines
7.2 KiB
C++
//ISO1 is ISO9660
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//ISO2 is ISO13490
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//ISO3 is ISO13346
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Bool ISOPrtInit(CPrt *p,I64 blk)
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{
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CBlkDev *bdev=p->bdev;
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I64 spc=bdev->blk_size>>BLK_SIZE_BITS,i=blk/spc;
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CISO1PriDesc *iso=MAlloc(bdev->blk_size);
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CISO1DirEntry *de;
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Bool unlock,result=FALSE;
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U8 buf[8];
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try {
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unlock=PrtLock(p);
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p->type=PT_ISO9660; //default
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p->spc=spc;
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p->offset=p->data=p->root_cluster=p->size=0;
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while (TRUE) {
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p->size=MaxI64(p->size,(i+1)*spc);
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RBlks(p,iso,i*spc,spc);
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buf[0](U32)=iso->id[0](U32);
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buf[4](U16)=iso->id[4](U8);
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switch (LstMatch(buf,"CD001\0CDW02\0BEA01\0BOOT2\0NSR02\0NSR03\0TEA01\0",LMF_EXACT)) {
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case 0:
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p->type=PT_ISO9660;
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switch (iso->type) {
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case ISO1T_SUPPLEMENTARY_DESC:
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p->data=0;
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de=&iso->root_dir_record;
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p->root_cluster=de->loc.little;
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p->size=iso->vol_space_size.little*bdev->blk_size>>BLK_SIZE_BITS;
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result=TRUE;
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goto ipi_done;
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case ISO1T_TERMINATOR:
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throw(EXCEPT_PRT,5);
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}
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break;
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default: //Its normal for ISO13346 to read NULL blk as terminator
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PutDefineErr("ST_UNSUPPORTED_FILE_SYSTEM");
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throw(EXCEPT_PRT,6);
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}
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i++;
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}
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ipi_done:
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Free(iso);
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if (unlock)
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PrtUnlock(p);
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} catch {
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p->type=PT_ISO9660;
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p->spc=spc;
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p->offset=p->data=p->root_cluster=0;
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Free(iso);
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if (unlock)
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PrtUnlock(p);
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}
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return result;
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}
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U0 Date2ISO1(CISO1Date *dst,CDate cdt)
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{
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CDateStruct ds;
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Date2DateStruct(&ds,cdt);
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dst->year=ds.year-ISO1_BASE_YEAR;
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dst->mon=ds.mon;
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dst->day=ds.day_of_mon;
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dst->hour=ds.hour;
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dst->min=ds.min;
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dst->sec=ds.sec;
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dst->sec100=ds.sec100;
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}
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CDate ISO1DateStruct2CDate(CISO1Date *dt)
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{
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CDateStruct ds;
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MemSet(&ds,0,sizeof(CDateStruct));
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ds.day_of_mon=dt->day;
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ds.mon=dt->mon;
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ds.year=dt->year+ISO1_BASE_YEAR;
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ds.sec100=dt->sec100;
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ds.sec=dt->sec;
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ds.min=dt->min;
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ds.hour=dt->hour;
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return DateStruct2Date(&ds);
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}
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Bool ISO1FromName(U8 *dst,U8 *src)
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{
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I64 i,j,n;
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MemSet(dst,0,CDIR_FILENAME_LEN);
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n=*src++;
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if (n==1 && !*src) {
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*dst='.';
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} else if (n==1 && *src==1) {
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*dst='.';
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dst[1]='.';
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} else {
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n>>=1;
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j=0;
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for (i=0;i<n;i++) {
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src++;
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if (*src==';')
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break;
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if (Bt(filename_chars_bitmap,*src)) {
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if (j>=CDIR_FILENAME_LEN-1)
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return FALSE;
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dst[j++]=*src++;
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} else
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return FALSE;
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}
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}
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return FileNameChk(dst);
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}
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Bool ISO1CDirFill(CDirEntry *tempde,CISO1DirEntry *de)
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{
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Bool result;
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MemSet(tempde,0,sizeof(CDirEntry));
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result=ISO1FromName(tempde->name,&de->name_len);
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tempde->cluster=de->loc.little;
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tempde->size=de->size.little;
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tempde->attr=FileAttr(tempde->name);
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if (de->flags & ISO1_ATTR_DIR)
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tempde->attr|=_ATTR_DIR;
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tempde->datetime=ISO1DateStruct2CDate(&de->date);
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return result;
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}
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Bool ISO1FileFind(CPrt *p,I64 cur_dir_cluster,U8 *name,CDirEntry *_result,I64 fuf_flags=0)
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{ //$LK,"FUF_JUST_DIRS","MN:FUF_JUST_DIRS"$, $LK,"FUF_JUST_FILES","MN:FUF_JUST_FILES"$
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CISO1DirEntry *isoptr,*buf;
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U8 dname[CDIR_FILENAME_LEN];
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Bool result=FALSE,unlock;
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I64 i;
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if (fuf_flags&~FUG_FILE_FIND)
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throw(EXCEPT_FUF,8);
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PrtChk(p);
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if (p->type!=PT_ISO9660)
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PutDefineErr("ST_NOT_ISO9660");
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else {
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try {
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unlock=PrtLock(p);
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isoptr=MAlloc(p->spc<<BLK_SIZE_BITS);
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RClusters(Fs->cur_prt,isoptr,cur_dir_cluster,1);
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if (isoptr->name_len==1 && !isoptr->name) { //curdir
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i=(isoptr->size.little+p->spc<<BLK_SIZE_BITS-1)/p->spc<<BLK_SIZE_BITS;
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buf=MAlloc(p->spc<<BLK_SIZE_BITS*i);
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RClusters(Fs->cur_prt,buf,cur_dir_cluster,i);
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Free(isoptr);
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} else {
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buf=isoptr;
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i=1;
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}
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i*=p->spc<<BLK_SIZE_BITS;
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isoptr=buf;
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while (i>0) {
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if (!isoptr->len) {
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isoptr(U8 *)++;
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i--;
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} else {
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ISO1FromName(dname,&isoptr->name_len);
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if (*dname) {
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if (!StrCmp(name,dname)) {
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result=ISO1CDirFill(_result,isoptr);
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if (result &&
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!(fuf_flags&FUF_JUST_DIRS && !(_result->attr & _ATTR_DIR)) &&
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!(fuf_flags&FUF_JUST_FILES && _result->attr & _ATTR_DIR) )
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goto exit_this;
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else
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result=FALSE;
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}
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}
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i-=isoptr->len;
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isoptr(U8 *)+=isoptr->len;
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}
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}
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exit_this:
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Free(buf);
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if (unlock)
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PrtUnlock(p);
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} catch
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if (unlock)
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PrtUnlock(p);
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}
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return result;
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}
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U8 *ISO1FileRead(CPrt *p,U8 *cur_dir,U8 *filename,I64 *_size,
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I64 *_attr,Bool raw,CArcCompress **_ac2)
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{
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U8 *buf=NULL;
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CDirEntry de;
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I64 c,blk_cnt,cur_dir_cluster;
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CArcCompress *ac;
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PrtChk(p);
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if (_size) *_size=0;
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if (_ac2) *_ac2=NULL;
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if (_attr) *_attr=0;
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if (p->type!=PT_ISO9660)
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PutDefineErr("ST_NOT_ISO9660");
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else {
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try {
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PrtLock(p);
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cur_dir_cluster=Name2DirCluster(p,cur_dir);
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if (ISO1FileFind(p,cur_dir_cluster,filename,&de,FUF_JUST_FILES)) {
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if (_attr) *_attr=de.attr;
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blk_cnt=(de.size+BLK_SIZE-1)>>BLK_SIZE_BITS;
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buf=MAlloc(blk_cnt<<BLK_SIZE_BITS+1);
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c=de.cluster;
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c=RClustersBlks(p,buf,c,blk_cnt);
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if (FileAttr(de.name)&_ATTR_COMPRESSED && !raw) {
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ac=buf;
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if (_attr) *_attr=FileAttr(de.name,*_attr);
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if (_size) *_size=ac->expanded_size;
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if (_ac2) {
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*_ac2=ac;
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buf=ExpandBuf(ac);
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} else {
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buf=ExpandBuf(ac);
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Free(ac);
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}
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} else {
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buf[de.size]=0; //Terminate
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if (_size) *_size=de.size;
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}
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if (_attr) *_attr=FileAttr(de.name,*_attr);
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}
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PrtUnlock(p);
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} catch
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PrtUnlock(p);
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}
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return buf;
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}
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Bool ISO1Cd(U8 *name,I64 cur_dir_cluster)
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{
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CDirEntry de;
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if (Fs->cur_prt->type!=PT_ISO9660)
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PutDefineErr("ST_NOT_ISO9660");
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else {
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if (ISO1FileFind(Fs->cur_prt,cur_dir_cluster,name,&de,FUF_JUST_DIRS))
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return TRUE;
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else {
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"%s ",name;
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PutDefineErr("ST_FILE_NOT_FOUND");
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}
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}
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return FALSE;
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}
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CDirEntry *ISO1FilesFind(U8 *files_find_mask,I64 fuf_flags,CDirEntry *parent=NULL)
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{
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CPrt *p=Fs->cur_prt;
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CISO1DirEntry *buf,*buf2,*isoptr;
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I64 i,cur_dir_cluster=Name2DirCluster(p,Fs->cur_dir);
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CDirEntry *result=NULL,*tempde;
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if (fuf_flags&~FUG_FILES_FIND)
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throw(EXCEPT_FUF,9);
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isoptr=MAlloc(p->spc<<BLK_SIZE_BITS);
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RClusters(Fs->cur_prt,isoptr,cur_dir_cluster,1);
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if (isoptr->name_len==1 && !isoptr->name) { //curdir
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i=(isoptr->size.little+p->spc<<BLK_SIZE_BITS-1)/p->spc<<BLK_SIZE_BITS;
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buf=MAlloc(p->spc<<BLK_SIZE_BITS*i);
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RClusters(Fs->cur_prt,buf,cur_dir_cluster,i);
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Free(isoptr);
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} else {
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buf=isoptr;
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i=1;
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}
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buf2=buf;
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i*=p->spc<<BLK_SIZE_BITS;
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while (i>0) {
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if (!buf->len) {
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buf(U8 *)++;
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i--;
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} else {
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tempde=MAlloc(sizeof(CDirEntry));
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if (ISO1CDirFill(tempde,buf)) {
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tempde->parent=parent;
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if (Bt(&fuf_flags,FUf_RECURSE) && tempde->attr&_ATTR_DIR && *tempde->name!='.') {
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tempde->next=result;
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result=tempde;
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tempde->full_name=DirNameAbs(tempde->name);
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if (Cd(tempde->name)) {
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tempde->sub=ISO1FilesFind(files_find_mask,fuf_flags,tempde);
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Cd("..");
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}
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} else if ((tempde->attr & _ATTR_DIR || !Bt(&fuf_flags,FUf_JUST_DIRS)) &&
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!(Bt(&fuf_flags,FUf_RECURSE) && *tempde->name=='.' && tempde->attr&_ATTR_DIR) &&
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FilesFindMatch(tempde->name,files_find_mask,fuf_flags)) {
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tempde->next=result;
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result=tempde;
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tempde->full_name=FileNameAbs(tempde->name);
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} else
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DirEntryDel(tempde);
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} else
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DirEntryDel(tempde);
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i-=buf->len;
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buf(U8 *)+=buf->len;
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}
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}
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Free(buf2);
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return result;
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}
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