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/*
ipdir.c
Interface for perl directory functions
*/
#include <ipdir.h>
class CPerlDir : public IPerlDir
{
public:
CPerlDir() { pPerl = NULL; };
virtual int MKdir(const char *dirname, int mode, int &err);
virtual int Chdir(const char *dirname, int &err);
virtual int Rmdir(const char *dirname, int &err);
virtual int Close(DIR *dirp, int &err);
virtual DIR *Open(char *filename, int &err);
virtual struct direct *Read(DIR *dirp, int &err);
virtual void Rewind(DIR *dirp, int &err);
virtual void Seek(DIR *dirp, long loc, int &err);
virtual long Tell(DIR *dirp, int &err);
inline void SetPerlObj(CPerlObj *p) { pPerl = p; };
protected:
CPerlObj *pPerl;
};
int CPerlDir::MKdir(const char *dirname, int mode, int &err)
{
return mkdir(dirname); /* just ignore mode */
}
int CPerlDir::Chdir(const char *dirname, int &err)
{
return chdir(dirname);
}
int CPerlDir::Rmdir(const char *dirname, int &err)
{
return rmdir(dirname);
}
#define PATHLEN 1024
// The idea here is to read all the directory names into a string table
// (separated by nulls) and when one of the other dir functions is called
// return the pointer to the current file name.
DIR *CPerlDir::Open(char *filename, int &err)
{
DIR *p;
long len;
long idx;
char scannamespc[PATHLEN];
char *scanname = scannamespc;
struct stat sbuf;
WIN32_FIND_DATA FindData;
HANDLE fh;
// Create the search pattern
strcpy(scanname, filename);
len = strlen(scanname);
if(len > 1 && ((scanname[len-1] == '/') || (scanname[len-1] == '\\')))
{
// allow directory names of 'x:\' to pass
if(!(len == 3 && scanname[1] == ':'))
scanname[len-1] = '\0';
}
// check to see if filename is a directory
if(stat(scanname, &sbuf) < 0 || sbuf.st_mode & _S_IFDIR == 0)
{
DWORD dTemp = GetFileAttributes(scanname);
if(dTemp == 0xffffffff || !(dTemp & FILE_ATTRIBUTE_DIRECTORY))
{
return NULL;
}
}
if((scanname[len-1] == '/') || (scanname[len-1] == '\\'))
scanname[len-1] = '\0';
strcat(scanname, "/*");
// Get a DIR structure
Newz(1501, p, 1, DIR);
if(p == NULL)
return NULL;
// do the FindFirstFile call
fh = FindFirstFile(scanname, &FindData);
if(fh == INVALID_HANDLE_VALUE)
{
Safefree(p);
return NULL;
}
// now allocate the first part of the string table for the filenames that we find.
idx = strlen(FindData.cFileName)+1;
New(1502, p->start, idx, char);
if(p->start == NULL)
{
FindClose(fh);
croak("opendir: malloc failed!\n");
}
strcpy(p->start, FindData.cFileName);
p->nfiles++;
// loop finding all the files that match the wildcard
// (which should be all of them in this directory!).
// the variable idx should point one past the null terminator
// of the previous string found.
//
while(FindNextFile(fh, &FindData))
{
len = strlen(FindData.cFileName);
// bump the string table size by enough for the
// new name and it's null terminator
Renew(p->start, idx+len+1, char);
if(p->start == NULL)
{
FindClose(fh);
croak("opendir: malloc failed!\n");
}
strcpy(&p->start[idx], FindData.cFileName);
p->nfiles++;
idx += len+1;
}
FindClose(fh);
p->size = idx;
p->curr = p->start;
return p;
}
int CPerlDir::Close(DIR *dirp, int &err)
{
Safefree(dirp->start);
Safefree(dirp);
return 1;
}
// Readdir just returns the current string pointer and bumps the
// string pointer to the next entry.
struct direct *CPerlDir::Read(DIR *dirp, int &err)
{
int len;
static int dummy = 0;
if(dirp->curr)
{ // first set up the structure to return
len = strlen(dirp->curr);
strcpy(dirp->dirstr.d_name, dirp->curr);
dirp->dirstr.d_namlen = len;
// Fake an inode
dirp->dirstr.d_ino = dummy++;
// Now set up for the next call to readdir
dirp->curr += len + 1;
if(dirp->curr >= (dirp->start + dirp->size))
{
dirp->curr = NULL;
}
return &(dirp->dirstr);
}
else
return NULL;
}
void CPerlDir::Rewind(DIR *dirp, int &err)
{
dirp->curr = dirp->start;
}
void CPerlDir::Seek(DIR *dirp, long loc, int &err)
{
dirp->curr = (char *)loc;
}
long CPerlDir::Tell(DIR *dirp, int &err)
{
return (long) dirp->curr;
}
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