598 lines
13 KiB
C++
598 lines
13 KiB
C++
#include "cwCommon.h"
|
|
#include "cwLog.h"
|
|
|
|
#include "cwFileSys.h"
|
|
#include "cwCommonImpl.h"
|
|
#include "cwMem.h"
|
|
|
|
#ifdef cwLINUX
|
|
#include <libgen.h>
|
|
#include <sys/stat.h>
|
|
#include <dirent.h> // opendir()/readdir()
|
|
#endif
|
|
|
|
namespace cw
|
|
{
|
|
|
|
bool _fileSysConcat( char* rp, unsigned rn, char sepChar, const char* suffixStr )
|
|
{
|
|
unsigned m = strlen(rp);
|
|
|
|
// m==0 if no sep needs to be inserted or removed
|
|
|
|
//if( m == 0 )
|
|
// return false;
|
|
|
|
if( m != 0 )
|
|
{
|
|
|
|
// if a sep char needs to be inserted
|
|
if( rp[m-1] != sepChar && suffixStr[0] != sepChar )
|
|
{
|
|
cwAssert((m+1)<rn);
|
|
|
|
if((m+1)>=rn)
|
|
return false;
|
|
|
|
rp[m] = sepChar;
|
|
rp[m+1]= 0;
|
|
++m;
|
|
}
|
|
else
|
|
// if a sep char needs to be removed
|
|
if( rp[m-1] == sepChar && suffixStr[0] == sepChar )
|
|
{
|
|
rp[m-1] = 0;
|
|
--m;
|
|
}
|
|
|
|
}
|
|
|
|
cwAssert( rn>=m && strlen(rp)+strlen(suffixStr) <= rn );
|
|
strncat(rp,suffixStr,rn-m);
|
|
|
|
return true;
|
|
}
|
|
}
|
|
|
|
bool cw::filesys::isDir( const char* dirStr )
|
|
{
|
|
struct stat s;
|
|
|
|
errno = 0;
|
|
|
|
if( stat(dirStr,&s) != 0 )
|
|
{
|
|
// if the dir does not exist
|
|
if( errno == ENOENT )
|
|
return false;
|
|
|
|
cwLogSysError( kOpFailRC, errno, "'stat' failed on '%s'",dirStr);
|
|
return false;
|
|
}
|
|
|
|
return S_ISDIR(s.st_mode);
|
|
}
|
|
|
|
bool cw::filesys::isFile( const char* fnStr )
|
|
{
|
|
struct stat s;
|
|
errno = 0;
|
|
|
|
if( stat(fnStr,&s) != 0 )
|
|
{
|
|
|
|
// if the file does not exist
|
|
if( errno == ENOENT )
|
|
return false;
|
|
|
|
cwLogSysError( kOpFailRC, errno, "'stat' failed on '%s'.",fnStr);
|
|
return false;
|
|
}
|
|
|
|
return S_ISREG(s.st_mode);
|
|
}
|
|
|
|
|
|
bool cw::filesys::isLink( const char* fnStr )
|
|
{
|
|
struct stat s;
|
|
errno = 0;
|
|
|
|
if( lstat(fnStr,&s) != 0 )
|
|
{
|
|
// if the file does not exist
|
|
if( errno == ENOENT )
|
|
return false;
|
|
|
|
cwLogSysError( kOpFailRC, errno, "'stat' failed on '%s'.",fnStr);
|
|
return false;
|
|
}
|
|
|
|
return S_ISLNK(s.st_mode);
|
|
}
|
|
|
|
|
|
|
|
char* cw::filesys::vMakeFn( const char* dir, const char* fn, const char* ext, va_list vl )
|
|
{
|
|
rc_t rc = kOkRC;
|
|
char* rp = nullptr;
|
|
const char* dp = nullptr;
|
|
unsigned n = 0;
|
|
char pathSep = cwPathSeparatorChar;
|
|
char extSep = '.';
|
|
va_list vl_t;
|
|
va_copy(vl_t,vl);
|
|
|
|
// get prefix directory length
|
|
if( dir != nullptr )
|
|
n += strlen(dir) + 1; // add 1 for ending sep
|
|
|
|
// get file name length
|
|
if( fn != nullptr )
|
|
n += strlen(fn);
|
|
|
|
// get extension length
|
|
if( ext != nullptr )
|
|
n += strlen(ext) + 1; // add 1 for period
|
|
|
|
// get length of all var args dir's
|
|
while( (dp = va_arg(vl,const char*)) != nullptr )
|
|
n += strlen(dp) + 1; // add 1 for ending sep
|
|
|
|
// add 1 for terminating zero and allocate memory
|
|
|
|
if((rp = mem::allocZ<char>( n+1 )) == nullptr )
|
|
{
|
|
rc = cwLogError(kMemAllocFailRC,"Unable to allocate file name memory.");
|
|
goto errLabel;
|
|
}
|
|
|
|
va_copy(vl,vl_t);
|
|
|
|
rp[n] = 0;
|
|
rp[0] = 0;
|
|
|
|
// copy out the prefix dir
|
|
if( dir != nullptr )
|
|
strncat(rp,dir,n-strlen(rp));
|
|
|
|
// copy out each of the var arg's directories
|
|
while((dp = va_arg(vl,const char*)) != nullptr )
|
|
if(!_fileSysConcat(rp,n,pathSep,dp) )
|
|
{
|
|
cwAssert(0);
|
|
goto errLabel;
|
|
}
|
|
|
|
|
|
// copy out the file name
|
|
if( fn != nullptr )
|
|
if(!_fileSysConcat(rp,n,pathSep,fn))
|
|
{
|
|
cwAssert(0);
|
|
goto errLabel;
|
|
}
|
|
|
|
// copy out the extension
|
|
if( ext != nullptr )
|
|
if(!_fileSysConcat(rp,n,extSep,ext))
|
|
{
|
|
cwAssert(0);
|
|
goto errLabel;
|
|
}
|
|
|
|
cwAssert(strlen(rp)<=n);
|
|
|
|
errLabel:
|
|
|
|
if( rc != kOkRC && rp != nullptr )
|
|
mem::release( rp );
|
|
|
|
return rp;
|
|
}
|
|
|
|
|
|
char* cw::filesys::makeFn( const char* dir, const char* fn, const char* ext, ... )
|
|
{
|
|
va_list vl;
|
|
va_start(vl,ext);
|
|
char* fnOut = filesys::vMakeFn(dir,fn,ext,vl);
|
|
va_end(vl);
|
|
return fnOut;
|
|
}
|
|
|
|
|
|
|
|
cw::filesys::pathPart_t* cw::filesys::pathParts( const char* pathStr )
|
|
{
|
|
unsigned n = 0; // char's in pathStr
|
|
unsigned dn = 0; // char's in the dir part
|
|
unsigned fn = 0; // char's in the name part
|
|
unsigned en = 0; // char's in the ext part
|
|
char* cp = nullptr;
|
|
pathPart_t* rp = nullptr;
|
|
|
|
|
|
if( pathStr==nullptr )
|
|
return nullptr;
|
|
|
|
// skip leading white space
|
|
for(; *pathStr; ++pathStr )
|
|
if( !isspace(*pathStr ) )
|
|
break;
|
|
|
|
|
|
// get the length of pathStr
|
|
n = strlen(pathStr);
|
|
|
|
// remove trailing spaces
|
|
for(; n > 0; --n )
|
|
if( !isspace(pathStr[n-1]) )
|
|
break;
|
|
|
|
// if pathStr is empty
|
|
if( n == 0 )
|
|
return nullptr;
|
|
|
|
|
|
char buf[n+1];
|
|
buf[n] = 0;
|
|
|
|
// Get the last word (which may be a file name) from pathStr.
|
|
// (pathStr must be copied into a buf because basename()
|
|
// is allowed to change the values in its arg.)
|
|
strncpy(buf,pathStr,n);
|
|
cp = basename(buf);
|
|
|
|
if( cp != nullptr )
|
|
{
|
|
char* ep;
|
|
// does the last word have a period in it
|
|
if( (ep = strchr(cp,'.')) != nullptr )
|
|
{
|
|
*ep = 0; // end the file name at the period
|
|
++ep; // set the ext marker
|
|
en = strlen(ep); // get the length of the ext
|
|
}
|
|
|
|
fn = strlen(cp); //get the length of the file name
|
|
}
|
|
|
|
// Get the directory part.
|
|
// ( pathStr must be copied into a buf because dirname()
|
|
// is allowed to change the values in its arg.)
|
|
strncpy(buf,pathStr,n);
|
|
|
|
// if the last char in pathStr[] is '/' then the whole string is a dir.
|
|
// (this is not the answer that dirname() and basename() would give).
|
|
if( pathStr[n-1] == cwPathSeparatorChar )
|
|
{
|
|
fn = 0;
|
|
en = 0;
|
|
dn = n;
|
|
cp = buf;
|
|
}
|
|
else
|
|
{
|
|
cp = dirname(buf);
|
|
}
|
|
|
|
|
|
if( cp != nullptr )
|
|
dn = strlen(cp);
|
|
|
|
// get the total size of the returned memory. (add 3 for ecmh possible terminating zero)
|
|
n = sizeof(pathPart_t) + dn + fn + en + 3;
|
|
|
|
// alloc memory
|
|
if((rp = mem::allocZ<pathPart_t>( n )) == nullptr )
|
|
{
|
|
cwLogError( kMemAllocFailRC, "Unable to allocate the file system path part record for '%s'.",pathStr);
|
|
return nullptr;
|
|
}
|
|
|
|
// set the return pointers for ecmh of the parts
|
|
rp->dirStr = (const char* )(rp + 1);
|
|
rp->fnStr = rp->dirStr + dn + 1;
|
|
rp->extStr = rp->fnStr + fn + 1;
|
|
|
|
|
|
// if there is a directory part
|
|
if( dn>0 )
|
|
strcpy((char*)rp->dirStr,cp);
|
|
else
|
|
rp->dirStr = nullptr;
|
|
|
|
if( fn || en )
|
|
{
|
|
// Get the trailing word again.
|
|
// pathStr must be copied into a buf because basename() may
|
|
// is allowed to change the values in its arg.
|
|
strncpy(buf,pathStr,n);
|
|
cp = basename(buf);
|
|
|
|
|
|
if( cp != nullptr )
|
|
{
|
|
|
|
char* ep;
|
|
if( (ep = strchr(cp,'.')) != nullptr )
|
|
{
|
|
*ep = 0;
|
|
++ep;
|
|
|
|
cwAssert( strlen(ep) == en );
|
|
strcpy((char*)rp->extStr,ep);
|
|
}
|
|
|
|
|
|
cwAssert( strlen(cp) == fn );
|
|
if(fn)
|
|
strcpy((char*)rp->fnStr,cp);
|
|
}
|
|
}
|
|
|
|
if( fn == 0 )
|
|
rp->fnStr = nullptr;
|
|
|
|
if( en == 0 )
|
|
rp->extStr = nullptr;
|
|
|
|
return rp;
|
|
}
|
|
|
|
namespace cw
|
|
{
|
|
namespace filesys
|
|
{
|
|
typedef struct
|
|
{
|
|
unsigned filterFlags;
|
|
dirEntry_t* rp;
|
|
char* dataPtr;
|
|
char* endPtr;
|
|
unsigned entryCnt;
|
|
unsigned entryIdx;
|
|
unsigned dataByteCnt;
|
|
unsigned passIdx;
|
|
} deRecd_t;
|
|
|
|
cw::rc_t _dirGetEntries( deRecd_t* drp, const char* dirStr )
|
|
{
|
|
rc_t rc = kOkRC;
|
|
DIR* dirp = NULL;
|
|
struct dirent* dp = NULL;
|
|
char curDirPtr[] = "./";
|
|
unsigned dn = 0;
|
|
|
|
|
|
if( dirStr == NULL || strlen(dirStr) == 0 )
|
|
dirStr = curDirPtr;
|
|
|
|
if( isDir(dirStr) == false )
|
|
return rc;
|
|
|
|
unsigned fnCharCnt = strlen(dirStr) + PATH_MAX;
|
|
char fn[ fnCharCnt + 1 ];
|
|
|
|
|
|
// copy the directory into fn[] ...
|
|
fn[0] = 0;
|
|
fn[fnCharCnt] = 0;
|
|
|
|
strcpy(fn,dirStr);
|
|
|
|
cwAssert( strlen(fn)+2 < fnCharCnt );
|
|
|
|
// ... and be sure that it is terminated with a path sep char
|
|
if( fn[ strlen(fn)-1 ] != cwPathSeparatorChar )
|
|
{
|
|
char sep[] = { cwPathSeparatorChar, '\0' };
|
|
strcat(fn,sep);
|
|
}
|
|
// file names will be appended to the path at this location
|
|
unsigned fni = strlen(fn);
|
|
|
|
// open the directory
|
|
if((dirp = opendir(dirStr)) == NULL)
|
|
{
|
|
rc = cwLogSysError(kOpFailRC,errno,"Unable to open the directory:'%s'.",dirStr);
|
|
|
|
goto errLabel;
|
|
}
|
|
|
|
// get the next directory entry
|
|
while((dp = readdir(dirp)) != NULL )
|
|
{
|
|
// validate d_name
|
|
if( (dn = strlen(dp->d_name)) > 0 )
|
|
{
|
|
unsigned flags = 0;
|
|
|
|
// handle cases where d_name begins with '.'
|
|
if( dp->d_name[0] == '.' )
|
|
{
|
|
if( strcmp(dp->d_name,".") == 0 )
|
|
{
|
|
if( cwIsFlag(drp->filterFlags,kCurDirFsFl) == false )
|
|
continue;
|
|
|
|
flags |= kCurDirFsFl;
|
|
}
|
|
|
|
if( strcmp(dp->d_name,"..") == 0 )
|
|
{
|
|
if( cwIsFlag(drp->filterFlags,kParentDirFsFl) == false )
|
|
continue;
|
|
|
|
flags |= kParentDirFsFl;
|
|
}
|
|
|
|
if( flags == 0 )
|
|
{
|
|
if( cwIsFlag(drp->filterFlags,kInvisibleFsFl) == false )
|
|
continue;
|
|
|
|
flags |= kInvisibleFsFl;
|
|
}
|
|
}
|
|
|
|
fn[fni] = 0;
|
|
strncat( fn, dp->d_name, fnCharCnt-fni );
|
|
unsigned fnN = strlen(fn);
|
|
|
|
// if the filename is too long for the buffer
|
|
if( fnN > fnCharCnt )
|
|
{
|
|
rc = cwLogSysError(kBufTooSmallRC, errno, "The directory entry:'%s' was too long to be processed.",dp->d_name);
|
|
goto errLabel;
|
|
}
|
|
|
|
// is a link
|
|
if( isLink(fn) )
|
|
{
|
|
if( cwIsFlag(drp->filterFlags,kLinkFsFl) == false )
|
|
continue;
|
|
|
|
flags |= kLinkFsFl;
|
|
|
|
if( cwIsFlag(drp->filterFlags,kRecurseLinksFsFl) )
|
|
if((rc = _dirGetEntries(drp,fn)) != kOkRC )
|
|
goto errLabel;
|
|
}
|
|
else
|
|
{
|
|
|
|
// is the entry a file
|
|
if( isFile(fn) )
|
|
{
|
|
if( cwIsFlag(drp->filterFlags,kFileFsFl)==false )
|
|
continue;
|
|
|
|
flags |= kFileFsFl;
|
|
}
|
|
else
|
|
{
|
|
// is the entry a dir
|
|
if( isDir(fn) )
|
|
{
|
|
if( cwIsFlag(drp->filterFlags,kDirFsFl) == false)
|
|
continue;
|
|
|
|
flags |= kDirFsFl;
|
|
|
|
if( cwIsFlag(drp->filterFlags,kRecurseFsFl) )
|
|
if((rc = _dirGetEntries(drp,fn)) != kOkRC )
|
|
goto errLabel;
|
|
}
|
|
else
|
|
{
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
//cwAssert(flags != 0);
|
|
|
|
if( drp->passIdx == 0 )
|
|
{
|
|
++drp->entryCnt;
|
|
|
|
// add 1 for the name terminating zero
|
|
drp->dataByteCnt += sizeof(dirEntry_t) + 1;
|
|
|
|
if( cwIsFlag(drp->filterFlags,kFullPathFsFl) )
|
|
drp->dataByteCnt += fnN;
|
|
else
|
|
drp->dataByteCnt += dn;
|
|
|
|
}
|
|
else
|
|
{
|
|
cwAssert( drp->passIdx == 1 );
|
|
cwAssert( drp->entryIdx < drp->entryCnt );
|
|
|
|
unsigned n = 0;
|
|
if( cwIsFlag(drp->filterFlags,kFullPathFsFl) )
|
|
{
|
|
n = fnN+1;
|
|
cwAssert( drp->dataPtr + n <= drp->endPtr );
|
|
strcpy(drp->dataPtr,fn);
|
|
}
|
|
else
|
|
{
|
|
n = dn+1;
|
|
cwAssert( drp->dataPtr + n <= drp->endPtr );
|
|
strcpy(drp->dataPtr,dp->d_name);
|
|
}
|
|
|
|
drp->rp[ drp->entryIdx ].flags = flags;
|
|
drp->rp[ drp->entryIdx ].name = drp->dataPtr;
|
|
drp->dataPtr += n;
|
|
cwAssert( drp->dataPtr <= drp->endPtr);
|
|
++drp->entryIdx;
|
|
}
|
|
}
|
|
}
|
|
|
|
errLabel:
|
|
if( dirp != NULL )
|
|
closedir(dirp);
|
|
|
|
return rc;
|
|
}
|
|
}
|
|
}
|
|
|
|
cw::filesys::dirEntry_t* cw::filesys::dirEntries( const char* dirStr, unsigned filterFlags, unsigned* dirEntryCntPtr )
|
|
{
|
|
rc_t rc = kOkRC;
|
|
deRecd_t r;
|
|
|
|
memset(&r,0,sizeof(r));
|
|
//r.p = _cmFileSysHandleToPtr(h);
|
|
r.filterFlags = filterFlags;
|
|
|
|
cwAssert( dirEntryCntPtr != NULL );
|
|
*dirEntryCntPtr = 0;
|
|
|
|
for(r.passIdx=0; r.passIdx<2; ++r.passIdx)
|
|
{
|
|
if((rc = _dirGetEntries( &r, dirStr )) != kOkRC )
|
|
goto errLabel;
|
|
|
|
if( r.passIdx == 0 && r.dataByteCnt>0 )
|
|
{
|
|
// allocate memory to hold the return values
|
|
if(( r.rp = mem::allocZ<dirEntry_t>( r.dataByteCnt )) == NULL )
|
|
{
|
|
rc = cwLogError(kObjAllocFailRC, "Unable to allocate %i bytes of dir entry memory.",r.dataByteCnt);
|
|
goto errLabel;
|
|
}
|
|
|
|
r.dataPtr = (char*)(r.rp + r.entryCnt);
|
|
r.endPtr = ((char*)r.rp) + r.dataByteCnt;
|
|
}
|
|
}
|
|
|
|
errLabel:
|
|
|
|
if( rc == kOkRC )
|
|
{
|
|
cwAssert( r.entryIdx == r.entryCnt );
|
|
*dirEntryCntPtr = r.entryCnt;
|
|
}
|
|
else
|
|
{
|
|
if( r.rp != NULL )
|
|
mem::release(r.rp);
|
|
|
|
r.rp = NULL;
|
|
}
|
|
|
|
return r.rp;
|
|
}
|
|
|