+#define PERL_NO_GET_CONTEXT
+#define WIN32_LEAN_AND_MEAN
+#define WIN32IO_IS_STDIO
+#include <tchar.h>
+#ifdef __GNUC__
+#define Win32_Winsock
+#endif
+#include <windows.h>
+
+#include <sys/stat.h>
+#include "EXTERN.h"
+#include "perl.h"
+
+#ifdef PERLIO_LAYERS
+
+#include "perliol.h"
+
+#define NO_XSLOCKS
+#include "XSUB.h"
+
+
+/* Bottom-most level for Win32 case */
+
+typedef struct
+{
+ struct _PerlIO base; /* The generic part */
+ HANDLE h; /* OS level handle */
+ IV refcnt; /* REFCNT for the "fd" this represents */
+ int fd; /* UNIX like file descriptor - index into fdtable */
+} PerlIOWin32;
+
+PerlIOWin32 *fdtable[256];
+IV max_open_fd = -1;
+
+IV
+PerlIOWin32_popped(pTHX_ PerlIO *f)
+{
+ PerlIOWin32 *s = PerlIOSelf(f,PerlIOWin32);
+ if (--s->refcnt > 0)
+ {
+ *f = PerlIOBase(f)->next;
+ return 1;
+ }
+ fdtable[s->fd] = NULL;
+ return 0;
+}
+
+IV
+PerlIOWin32_fileno(pTHX_ PerlIO *f)
+{
+ return PerlIOSelf(f,PerlIOWin32)->fd;
+}
+
+IV
+PerlIOWin32_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
+{
+ IV code = PerlIOBase_pushed(aTHX_ f,mode,arg,tab);
+ if (*PerlIONext(f))
+ {
+ PerlIOWin32 *s = PerlIOSelf(f,PerlIOWin32);
+ s->fd = PerlIO_fileno(PerlIONext(f));
+ }
+ PerlIOBase(f)->flags |= PERLIO_F_OPEN;
+ return code;
+}
+
+PerlIO *
+PerlIOWin32_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, IV n, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args)
+{
+ const char *tmode = mode;
+ HANDLE h = INVALID_HANDLE_VALUE;
+ if (f)
+ {
+ /* Close if already open */
+ if (PerlIOBase(f)->flags & PERLIO_F_OPEN)
+ (*PerlIOBase(f)->tab->Close)(aTHX_ f);
+ }
+ if (narg > 0)
+ {
+ char *path = SvPV_nolen(*args);
+ DWORD access = 0;
+ DWORD share = 0;
+ DWORD create = -1;
+ DWORD attr = FILE_ATTRIBUTE_NORMAL;
+ if (*mode == '#')
+ {
+ /* sysopen - imode is UNIX-like O_RDONLY etc.
+ - do_open has converted that back to string form in mode as well
+ - perm is UNIX like permissions
+ */
+ mode++;
+ }
+ else
+ {
+ /* Normal open - decode mode string */
+ }
+ switch(*mode)
+ {
+ case 'r':
+ access = GENERIC_READ;
+ create = OPEN_EXISTING;
+ if (*++mode == '+')
+ {
+ access |= GENERIC_WRITE;
+ create = OPEN_ALWAYS;
+ mode++;
+ }
+ break;
+
+ case 'w':
+ access = GENERIC_WRITE;
+ create = TRUNCATE_EXISTING;
+ if (*++mode == '+')
+ {
+ access |= GENERIC_READ;
+ mode++;
+ }
+ break;
+
+ case 'a':
+ access = GENERIC_WRITE;
+ create = OPEN_ALWAYS;
+ if (*++mode == '+')
+ {
+ access |= GENERIC_READ;
+ mode++;
+ }
+ break;
+ }
+ if (*mode == 'b')
+ {
+ mode++;
+ }
+ else if (*mode == 't')
+ {
+ mode++;
+ }
+ if (*mode || create == -1)
+ {
+ SETERRNO(EINVAL,LIB$_INVARG);
+ return NULL;
+ }
+ if (!(access & GENERIC_WRITE))
+ share = FILE_SHARE_READ;
+ h = CreateFile(path,access,share,NULL,create,attr,NULL);
+ if (h == INVALID_HANDLE_VALUE)
+ {
+ if (create == TRUNCATE_EXISTING)
+ h = CreateFile(path,access,share,NULL,(create = OPEN_ALWAYS),attr,NULL);
+ }
+ }
+ else
+ {
+ /* fd open */
+ h = INVALID_HANDLE_VALUE;
+ if (fd >= 0 && fd <= max_open_fd)
+ {
+ PerlIOWin32 *s = fdtable[fd];
+ if (s)
+ {
+ s->refcnt++;
+ if (!f)
+ f = PerlIO_allocate(aTHX);
+ *f = &s->base;
+ return f;
+ }
+ }
+ if (*mode == 'I')
+ {
+ mode++;
+ switch(fd)
+ {
+ case 0:
+ h = GetStdHandle(STD_INPUT_HANDLE);
+ break;
+ case 1:
+ h = GetStdHandle(STD_OUTPUT_HANDLE);
+ break;
+ case 2:
+ h = GetStdHandle(STD_ERROR_HANDLE);
+ break;
+ }
+ }
+ }
+ if (h != INVALID_HANDLE_VALUE)
+ fd = win32_open_osfhandle((intptr_t) h, PerlIOUnix_oflags(tmode));
+ if (fd >= 0)
+ {
+ PerlIOWin32 *s;
+ if (!f)
+ f = PerlIO_allocate(aTHX);
+ s = PerlIOSelf(PerlIO_push(aTHX_ f,self,tmode,PerlIOArg),PerlIOWin32);
+ s->h = h;
+ s->fd = fd;
+ s->refcnt = 1;
+ if (fd >= 0)
+ {
+ fdtable[fd] = s;
+ if (fd > max_open_fd)
+ max_open_fd = fd;
+ }
+ return f;
+ }
+ if (f)
+ {
+ /* FIXME: pop layers ??? */
+ }
+ return NULL;
+}
+
+SSize_t
+PerlIOWin32_read(pTHX_ PerlIO *f, void *vbuf, Size_t count)
+{
+ PerlIOWin32 *s = PerlIOSelf(f,PerlIOWin32);
+ DWORD len;
+ if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD))
+ return 0;
+ if (ReadFile(s->h,vbuf,count,&len,NULL))
+ {
+ return len;
+ }
+ else
+ {
+ if (GetLastError() != NO_ERROR)
+ {
+ PerlIOBase(f)->flags |= PERLIO_F_ERROR;
+ return -1;
+ }
+ else
+ {
+ if (count != 0)
+ PerlIOBase(f)->flags |= PERLIO_F_EOF;
+ return 0;
+ }
+ }
+}
+
+SSize_t
+PerlIOWin32_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count)
+{
+ PerlIOWin32 *s = PerlIOSelf(f,PerlIOWin32);
+ DWORD len;
+ if (WriteFile(s->h,vbuf,count,&len,NULL))
+ {
+ return len;
+ }
+ else
+ {
+ PerlIOBase(f)->flags |= PERLIO_F_ERROR;
+ return -1;
+ }
+}
+
+IV
+PerlIOWin32_seek(pTHX_ PerlIO *f, Off_t offset, int whence)
+{
+ static const DWORD where[3] = { FILE_BEGIN, FILE_CURRENT, FILE_END };
+ PerlIOWin32 *s = PerlIOSelf(f,PerlIOWin32);
+#if Off_t_size >= 8
+ DWORD high = (DWORD)(offset >> 32);
+#else
+ DWORD high = 0;
+#endif
+ DWORD low = (DWORD) offset;
+ DWORD res = SetFilePointer(s->h,(LONG)low,(LONG *)&high,where[whence]);
+ if (res != 0xFFFFFFFF || GetLastError() != NO_ERROR)
+ {
+ return 0;
+ }
+ else
+ {
+ return -1;
+ }
+}
+
+Off_t
+PerlIOWin32_tell(pTHX_ PerlIO *f)
+{
+ PerlIOWin32 *s = PerlIOSelf(f,PerlIOWin32);
+ DWORD high = 0;
+ DWORD res = SetFilePointer(s->h,0,(LONG *)&high,FILE_CURRENT);
+ if (res != 0xFFFFFFFF || GetLastError() != NO_ERROR)
+ {
+#if Off_t_size >= 8
+ return ((Off_t) high << 32) | res;
+#else
+ return res;
+#endif
+ }
+ return (Off_t) -1;
+}
+
+IV
+PerlIOWin32_close(pTHX_ PerlIO *f)
+{
+ PerlIOWin32 *s = PerlIOSelf(f,PerlIOWin32);
+ if (s->refcnt == 1)
+ {
+ IV code = 0;
+#if 0
+ /* This does not do pipes etc. correctly */
+ if (!CloseHandle(s->h))
+ {
+ s->h = INVALID_HANDLE_VALUE;
+ return -1;
+ }
+#else
+ PerlIOBase(f)->flags &= ~PERLIO_F_OPEN;
+ return win32_close(s->fd);
+#endif
+ }
+ return 0;
+}
+
+PerlIO *
+PerlIOWin32_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *params, int flags)
+{
+ PerlIOWin32 *os = PerlIOSelf(f,PerlIOWin32);
+ HANDLE proc = GetCurrentProcess();
+ HANDLE new;
+ if (DuplicateHandle(proc, os->h, proc, &new, 0, FALSE, DUPLICATE_SAME_ACCESS))
+ {
+ char mode[8];
+ int fd = win32_open_osfhandle((intptr_t) new, PerlIOUnix_oflags(PerlIO_modestr(o,mode)));
+ if (fd >= 0)
+ {
+ f = PerlIOBase_dup(aTHX_ f, o, params, flags);
+ if (f)
+ {
+ PerlIOWin32 *fs = PerlIOSelf(f,PerlIOWin32);
+ fs->h = new;
+ fs->fd = fd;
+ fs->refcnt = 1;
+ fdtable[fd] = fs;
+ if (fd > max_open_fd)
+ max_open_fd = fd;
+ }
+ else
+ {
+ win32_close(fd);
+ }
+ }
+ else
+ {
+ CloseHandle(new);
+ }
+ }
+ return f;
+}
+
+PERLIO_FUNCS_DECL(PerlIO_win32) = {
+ sizeof(PerlIO_funcs),
+ "win32",
+ sizeof(PerlIOWin32),
+ PERLIO_K_RAW,
+ PerlIOWin32_pushed,
+ PerlIOWin32_popped,
+ PerlIOWin32_open,
+ PerlIOBase_binmode,
+ NULL, /* getarg */
+ PerlIOWin32_fileno,
+ PerlIOWin32_dup,
+ PerlIOWin32_read,
+ PerlIOBase_unread,
+ PerlIOWin32_write,
+ PerlIOWin32_seek,
+ PerlIOWin32_tell,
+ PerlIOWin32_close,
+ PerlIOBase_noop_ok, /* flush */
+ PerlIOBase_noop_fail, /* fill */
+ PerlIOBase_eof,
+ PerlIOBase_error,
+ PerlIOBase_clearerr,
+ PerlIOBase_setlinebuf,
+ NULL, /* get_base */
+ NULL, /* get_bufsiz */
+ NULL, /* get_ptr */
+ NULL, /* get_cnt */
+ NULL, /* set_ptrcnt */
+};
+
+#endif
https://perl5.git.perl.org / perl5.git / blobdiff