}
#else /* USE_SFIO */
-
/*======================================================================================*/
-
/* Implement all the PerlIO interface ourselves.
-*/
+ */
/* We _MUST_ have <unistd.h> if we are using lseek() and may have large files */
#ifdef I_UNISTD
}
}
-#define PERLIO_F_EOF 0x010000
-#define PERLIO_F_ERROR 0x020000
-#define PERLIO_F_LINEBUF 0x040000
-#define PERLIO_F_TEMP 0x080000
-#define PERLIO_F_RDBUF 0x100000
-#define PERLIO_F_WRBUF 0x200000
-#define PERLIO_F_OPEN 0x400000
-#define PERLIO_F_USED 0x800000
+/*--------------------------------------------------------------------------------------*/
+
+typedef struct
+{
+ char * name;
+ Size_t size;
+ IV kind;
+ IV (*Fileno)(PerlIO *f);
+ PerlIO * (*Fdopen)(int fd, const char *mode);
+ PerlIO * (*Open)(const char *path, const char *mode);
+ int (*Reopen)(const char *path, const char *mode, PerlIO *f);
+ /* Unix-like functions - cf sfio line disciplines */
+ SSize_t (*Read)(PerlIO *f, void *vbuf, Size_t count);
+ SSize_t (*Unread)(PerlIO *f, const void *vbuf, Size_t count);
+ SSize_t (*Write)(PerlIO *f, const void *vbuf, Size_t count);
+ IV (*Seek)(PerlIO *f, Off_t offset, int whence);
+ Off_t (*Tell)(PerlIO *f);
+ IV (*Close)(PerlIO *f);
+ /* Stdio-like buffered IO functions */
+ IV (*Flush)(PerlIO *f);
+ IV (*Eof)(PerlIO *f);
+ IV (*Error)(PerlIO *f);
+ void (*Clearerr)(PerlIO *f);
+ void (*Setlinebuf)(PerlIO *f);
+ /* Perl's snooping functions */
+ STDCHAR * (*Get_base)(PerlIO *f);
+ Size_t (*Get_bufsiz)(PerlIO *f);
+ STDCHAR * (*Get_ptr)(PerlIO *f);
+ SSize_t (*Get_cnt)(PerlIO *f);
+ void (*Set_ptrcnt)(PerlIO *f,STDCHAR *ptr,SSize_t cnt);
+} PerlIO_funcs;
+
struct _PerlIO
{
- IV flags; /* Various flags for state */
- IV fd; /* Maybe pointer on some OSes */
- int oflags; /* open/fcntl flags */
- STDCHAR *buf; /* Start of buffer */
- STDCHAR *end; /* End of valid part of buffer */
- STDCHAR *ptr; /* Current position in buffer */
- Size_t bufsiz; /* Size of buffer */
- Off_t posn; /* Offset of f->buf into the file */
- int oneword; /* An if-all-else-fails area as a buffer */
+ PerlIOl * next; /* Lower layer */
+ PerlIO_funcs * tab; /* Functions for this layer */
+ IV flags; /* Various flags for state */
};
+/*--------------------------------------------------------------------------------------*/
+
+/* Flag values */
+#define PERLIO_F_EOF 0x0010000
+#define PERLIO_F_CANWRITE 0x0020000
+#define PERLIO_F_CANREAD 0x0040000
+#define PERLIO_F_ERROR 0x0080000
+#define PERLIO_F_TRUNCATE 0x0100000
+#define PERLIO_F_APPEND 0x0200000
+#define PERLIO_F_BINARY 0x0400000
+#define PERLIO_F_TEMP 0x0800000
+#define PERLIO_F_LINEBUF 0x0100000
+#define PERLIO_F_WRBUF 0x2000000
+#define PERLIO_F_RDBUF 0x4000000
+#define PERLIO_F_OPEN 0x8000000
+
+#define PerlIOBase(f) (*(f))
+#define PerlIOSelf(f,type) ((type *)PerlIOBase(f))
+#define PerlIONext(f) (&(PerlIOBase(f)->next))
+
+/*--------------------------------------------------------------------------------------*/
+/* Inner level routines */
+
/* Table of pointers to the PerlIO structs (malloc'ed) */
PerlIO **_perlio = NULL;
int _perlio_size = 0;
-void
-PerlIO_alloc_buf(PerlIO *f)
-{
- if (!f->bufsiz)
- f->bufsiz = 4096;
- New('B',f->buf,f->bufsiz,char);
- if (!f->buf)
- {
- f->buf = (STDCHAR *)&f->oneword;
- f->bufsiz = sizeof(f->oneword);
- }
- f->ptr = f->buf;
- f->end = f->ptr;
-}
-
-
-/* This "flush" is akin to sfio's sync in that it handles files in either
- read or write state
-*/
-#undef PerlIO_flush
-int
-PerlIO_flush(PerlIO *f)
-{
- int code = 0;
- if (f)
- {
- if (f->flags & PERLIO_F_WRBUF)
- {
- /* write() the buffer */
- STDCHAR *p = f->buf;
- int count;
- while (p < f->ptr)
- {
- count = write(f->fd,p,f->ptr - p);
- if (count > 0)
- {
- p += count;
- }
- else if (count < 0 && errno != EINTR)
- {
- f->flags |= PERLIO_F_ERROR;
- code = -1;
- break;
- }
- }
- f->posn += (p - f->buf);
- }
- else if (f->flags & PERLIO_F_RDBUF)
- {
- /* Note position change */
- f->posn += (f->ptr - f->buf);
- if (f->ptr < f->end)
- {
- /* We did not consume all of it */
- f->posn = lseek(f->fd,f->posn,SEEK_SET);
- }
- }
- f->ptr = f->end = f->buf;
- f->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF);
- }
- else
- {
- int i;
- for (i=_perlio_size-1; i >= 0; i--)
- {
- if ((f = _perlio[i]))
- {
- if (PerlIO_flush(f) != 0)
- code = -1;
- }
- }
- }
- return code;
-}
-
-int
-PerlIO_oflags(const char *mode)
-{
- int oflags = -1;
- switch(*mode)
- {
- case 'r':
- oflags = O_RDONLY;
- if (*++mode == '+')
- {
- oflags = O_RDWR;
- mode++;
- }
- break;
-
- case 'w':
- oflags = O_CREAT|O_TRUNC;
- if (*++mode == '+')
- {
- oflags |= O_RDWR;
- mode++;
- }
- else
- oflags |= O_WRONLY;
- break;
-
- case 'a':
- oflags = O_CREAT|O_APPEND;
- if (*++mode == '+')
- {
- oflags |= O_RDWR;
- mode++;
- }
- else
- oflags |= O_WRONLY;
- break;
- }
- if (*mode || oflags == -1)
- {
- errno = EINVAL;
- oflags = -1;
- }
- return oflags;
-}
-
PerlIO *
PerlIO_allocate(void)
{
return NULL;
table[i] = f;
}
- if (!(f->flags & PERLIO_F_USED))
+ if (!*f)
{
- Zero(f,1,PerlIO);
- f->flags = PERLIO_F_USED;
+ PerlIO_debug(__FUNCTION__ " f=%p\n",f);
return f;
}
i++;
}
}
-#undef PerlIO_fdopen
-PerlIO *
-PerlIO_fdopen(int fd, const char *mode)
-{
- PerlIO *f = NULL;
- if (fd >= 0)
- {
- if ((f = PerlIO_allocate()))
- {
- f->fd = fd;
- f->oflags = PerlIO_oflags(mode);
- f->flags |= (PERLIO_F_OPEN|PERLIO_F_USED);
- }
- }
- return f;
-}
-
-#undef PerlIO_fileno
-int
-PerlIO_fileno(PerlIO *f)
+void
+PerlIO_pop(PerlIO *f)
{
- if (f && (f->flags & PERLIO_F_OPEN))
+ PerlIOl *l = *f;
+ if (l)
{
- return f->fd;
+ *f = l->next;
+ Safefree(l);
}
- return -1;
}
#undef PerlIO_close
int
PerlIO_close(PerlIO *f)
{
- int code = 0;
- if (f)
+ int code = (*PerlIOBase(f)->tab->Close)(f);
+ while (*f)
{
- if (PerlIO_flush(f) != 0)
- code = -1;
- while (close(f->fd) != 0)
- {
- if (errno != EINTR)
- {
- code = -1;
- break;
- }
- }
- f->flags &= ~PERLIO_F_OPEN;
- f->fd = -1;
- if (f->buf && f->buf != (STDCHAR *) &f->oneword)
- {
- Safefree(f->buf);
- }
- f->buf = NULL;
- f->ptr = f->end = f->buf;
- f->flags &= ~(PERLIO_F_USED|PERLIO_F_RDBUF|PERLIO_F_WRBUF);
+ PerlIO_pop(f);
}
return code;
}
PerlIO *f = _perlio[i];
if (f)
{
- PerlIO_close(f);
+ if (*f)
+ PerlIO_close(f);
Safefree(f);
}
}
_perlio_size = 0;
}
+
+
+/*--------------------------------------------------------------------------------------*/
+/* Given the abstraction above the public API functions */
+
+#undef PerlIO_fileno
+int
+PerlIO_fileno(PerlIO *f)
+{
+ return (*PerlIOBase(f)->tab->Fileno)(f);
+}
+
+extern PerlIO_funcs PerlIO_unix;
+extern PerlIO_funcs PerlIO_stdio;
+extern PerlIO_funcs PerlIO_perlio;
+
+#define PerlIO_default_top() &PerlIO_stdio
+#define PerlIO_default_btm() &PerlIO_unix
+
+#undef PerlIO_fdopen
+PerlIO *
+PerlIO_fdopen(int fd, const char *mode)
+{
+ PerlIO_funcs *tab = PerlIO_default_top();
+ return (*tab->Fdopen)(fd,mode);
+}
+
#undef PerlIO_open
PerlIO *
PerlIO_open(const char *path, const char *mode)
{
- PerlIO *f = NULL;
- int oflags = PerlIO_oflags(mode);
- if (oflags != -1)
- {
- int fd = open(path,oflags,0666);
- if (fd >= 0)
- {
- f = PerlIO_fdopen(fd,mode);
- if (!f)
- close(fd);
- }
- }
- return f;
+ PerlIO_funcs *tab = PerlIO_default_top();
+ return (*tab->Open)(path,mode);
}
-#undef PerlIO_reopen
-PerlIO *
-PerlIO_reopen(const char *path, const char *mode, PerlIO *f)
+IV
+PerlIOBase_init(PerlIO *f, const char *mode)
{
- if (f)
+ PerlIOl *l = PerlIOBase(f);
+ l->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE|
+ PERLIO_F_TRUNCATE|PERLIO_F_APPEND|PERLIO_F_BINARY);
+ if (mode)
{
- int oflags = PerlIO_oflags(mode);
- PerlIO_close(f);
- if (oflags != -1)
+ switch (*mode++)
+ {
+ case 'r':
+ l->flags = PERLIO_F_CANREAD;
+ break;
+ case 'a':
+ l->flags = PERLIO_F_APPEND|PERLIO_F_CANWRITE;
+ break;
+ case 'w':
+ l->flags = PERLIO_F_TRUNCATE|PERLIO_F_CANWRITE;
+ break;
+ default:
+ errno = EINVAL;
+ return -1;
+ }
+ while (*mode)
{
- int fd = open(path,oflags,0666);
- if (fd >= 0)
+ switch (*mode++)
{
- f->oflags = oflags;
- f->flags |= (PERLIO_F_OPEN|PERLIO_F_USED);
+ case '+':
+ l->flags |= PERLIO_F_CANREAD|PERLIO_F_CANWRITE;
+ break;
+ case 'b':
+ l->flags |= PERLIO_F_BINARY;
+ break;
+ default:
+ errno = EINVAL;
+ return -1;
}
}
- else
+ }
+ else
+ {
+ if (l->next)
{
- return NULL;
+ l->flags |= l->next->flags &
+ (PERLIO_F_CANREAD|PERLIO_F_CANWRITE|
+ PERLIO_F_TRUNCATE|PERLIO_F_APPEND|PERLIO_F_BINARY);
}
}
- return PerlIO_open(path,mode);
+ return 0;
}
-void
-PerlIO_init(void)
+#undef PerlIO_reopen
+PerlIO *
+PerlIO_reopen(const char *path, const char *mode, PerlIO *f)
{
- if (!_perlio)
+ if (f)
{
- atexit(&PerlIO_cleanup);
- PerlIO_fdopen(0,"r");
- PerlIO_fdopen(1,"w");
- PerlIO_fdopen(2,"w");
+ PerlIO_flush(f);
+ if ((*PerlIOBase(f)->tab->Reopen)(path,mode,f) == 0)
+ {
+ PerlIOBase_init(f,mode);
+ return f;
+ }
+ return NULL;
}
+ else
+ return PerlIO_open(path,mode);
}
-#undef PerlIO_stdin
-PerlIO *
-PerlIO_stdin(void)
-{
- if (!_perlio)
- PerlIO_init();
- return _perlio[0];
-}
-
-#undef PerlIO_stdout
-PerlIO *
-PerlIO_stdout(void)
-{
- if (!_perlio)
- PerlIO_init();
- return _perlio[1];
-}
-
-#undef PerlIO_stderr
-PerlIO *
-PerlIO_stderr(void)
+#undef PerlIO_read
+SSize_t
+PerlIO_read(PerlIO *f, void *vbuf, Size_t count)
{
- if (!_perlio)
- PerlIO_init();
- return _perlio[2];
+ return (*PerlIOBase(f)->tab->Read)(f,vbuf,count);
}
-#undef PerlIO_fast_gets
+#undef PerlIO_ungetc
int
-PerlIO_fast_gets(PerlIO *f)
+PerlIO_ungetc(PerlIO *f, int ch)
{
- return 1;
+ STDCHAR buf = ch;
+ if ((*PerlIOBase(f)->tab->Unread)(f,&buf,1) == 1)
+ return ch;
+ return -1;
}
-#undef PerlIO_has_cntptr
-int
-PerlIO_has_cntptr(PerlIO *f)
+#undef PerlIO_write
+SSize_t
+PerlIO_write(PerlIO *f, const void *vbuf, Size_t count)
{
- return 1;
+ return (*PerlIOBase(f)->tab->Write)(f,vbuf,count);
}
-#undef PerlIO_canset_cnt
+#undef PerlIO_seek
int
-PerlIO_canset_cnt(PerlIO *f)
+PerlIO_seek(PerlIO *f, Off_t offset, int whence)
{
- return 1;
+ return (*PerlIOBase(f)->tab->Seek)(f,offset,whence);
}
-#undef PerlIO_set_cnt
-void
-PerlIO_set_cnt(PerlIO *f, int cnt)
+#undef PerlIO_tell
+Off_t
+PerlIO_tell(PerlIO *f)
{
- if (f)
- {
- dTHX;
- if (!f->buf)
- PerlIO_alloc_buf(f);
- f->ptr = f->end - cnt;
- assert(f->ptr >= f->buf);
- }
+ return (*PerlIOBase(f)->tab->Tell)(f);
}
-#undef PerlIO_get_cnt
+#undef PerlIO_flush
int
-PerlIO_get_cnt(PerlIO *f)
+PerlIO_flush(PerlIO *f)
{
if (f)
{
- if (!f->buf)
- PerlIO_alloc_buf(f);
- if (f->flags & PERLIO_F_RDBUF)
- return (f->end - f->ptr);
+ return (*PerlIOBase(f)->tab->Flush)(f);
}
- return 0;
-}
-
-#undef PerlIO_set_ptrcnt
-void
-PerlIO_set_ptrcnt(PerlIO *f, STDCHAR *ptr, int cnt)
-{
- if (f)
+ else
{
- if (!f->buf)
- PerlIO_alloc_buf(f);
- f->ptr = ptr;
- if (PerlIO_get_cnt(f) != cnt || f->ptr < f->buf)
+ int code = 0;
+ int i;
+ for (i=_perlio_size-1; i >= 0; i--)
{
- dTHX;
- assert(PerlIO_get_cnt(f) == cnt);
- assert(f->ptr >= f->buf);
+ if ((f = _perlio[i]))
+ {
+ if (*f && PerlIO_flush(f) != 0)
+ code = -1;
+ }
}
- f->flags |= PERLIO_F_RDBUF;
+ return code;
}
}
-#undef PerlIO_get_bufsiz
+#undef PerlIO_eof
int
-PerlIO_get_bufsiz(PerlIO *f)
+PerlIO_eof(PerlIO *f)
{
- if (f)
+ return (*PerlIOBase(f)->tab->Eof)(f);
+}
+
+#undef PerlIO_error
+int
+PerlIO_error(PerlIO *f)
+{
+ return (*PerlIOBase(f)->tab->Error)(f);
+}
+
+#undef PerlIO_clearerr
+void
+PerlIO_clearerr(PerlIO *f)
+{
+ (*PerlIOBase(f)->tab->Clearerr)(f);
+}
+
+#undef PerlIO_setlinebuf
+void
+PerlIO_setlinebuf(PerlIO *f)
+{
+ (*PerlIOBase(f)->tab->Setlinebuf)(f);
+}
+
+#undef PerlIO_has_base
+int
+PerlIO_has_base(PerlIO *f)
+{
+ if (f && *f)
{
- if (!f->buf)
- PerlIO_alloc_buf(f);
- return f->bufsiz;
+ return (PerlIOBase(f)->tab->Get_base != NULL);
}
- return -1;
+ return 0;
}
-#undef PerlIO_get_ptr
-STDCHAR *
-PerlIO_get_ptr(PerlIO *f)
+#undef PerlIO_fast_gets
+int
+PerlIO_fast_gets(PerlIO *f)
{
- if (f)
+ if (f && *f)
{
- if (!f->buf)
- PerlIO_alloc_buf(f);
- return f->ptr;
+ return (PerlIOBase(f)->tab->Set_ptrcnt != NULL);
}
- return NULL;
+ return 0;
+}
+
+#undef PerlIO_has_cntptr
+int
+PerlIO_has_cntptr(PerlIO *f)
+{
+ if (f && *f)
+ {
+ PerlIO_funcs *tab = PerlIOBase(f)->tab;
+ return (tab->Get_ptr != NULL && tab->Get_cnt != NULL);
+ }
+ return 0;
+}
+
+#undef PerlIO_canset_cnt
+int
+PerlIO_canset_cnt(PerlIO *f)
+{
+ if (f && *f)
+ {
+ return (PerlIOBase(f)->tab->Set_ptrcnt != NULL);
+ }
+ return 1;
}
#undef PerlIO_get_base
STDCHAR *
PerlIO_get_base(PerlIO *f)
{
- if (f)
+ return (*PerlIOBase(f)->tab->Get_base)(f);
+}
+
+#undef PerlIO_get_bufsiz
+int
+PerlIO_get_bufsiz(PerlIO *f)
+{
+ return (*PerlIOBase(f)->tab->Get_bufsiz)(f);
+}
+
+#undef PerlIO_get_ptr
+STDCHAR *
+PerlIO_get_ptr(PerlIO *f)
+{
+ return (*PerlIOBase(f)->tab->Get_ptr)(f);
+}
+
+#undef PerlIO_get_cnt
+SSize_t
+PerlIO_get_cnt(PerlIO *f)
+{
+ return (*PerlIOBase(f)->tab->Get_cnt)(f);
+}
+
+#undef PerlIO_set_cnt
+void
+PerlIO_set_cnt(PerlIO *f,SSize_t cnt)
+{
+ return (*PerlIOBase(f)->tab->Set_ptrcnt)(f,NULL,cnt);
+}
+
+#undef PerlIO_set_ptrcnt
+void
+PerlIO_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt)
+{
+ return (*PerlIOBase(f)->tab->Set_ptrcnt)(f,ptr,cnt);
+}
+
+/*--------------------------------------------------------------------------------------*/
+/* "Methods" of the "base class" */
+
+IV
+PerlIOBase_fileno(PerlIO *f)
+{
+ return PerlIO_fileno(PerlIONext(f));
+}
+
+PerlIO *
+PerlIO_push(PerlIO *f,PerlIO_funcs *tab,const char *mode)
+{
+ PerlIOl *l = NULL;
+ Newc('L',l,tab->size,char,PerlIOl);
+ if (l)
{
- if (!f->buf)
- PerlIO_alloc_buf(f);
- return f->buf;
+ Zero(l,tab->size,char);
+ l->next = *f;
+ l->tab = tab;
+ *f = l;
+ PerlIOBase_init(f,mode);
+ PerlIO_debug(__FUNCTION__ " f=%p %08lX %s\n",f,PerlIOBase(f)->flags,tab->name);
}
- return NULL;
+ return f;
}
-#undef PerlIO_has_base
+SSize_t
+PerlIOBase_unread(PerlIO *f, const void *vbuf, Size_t count)
+{
+ Off_t old = PerlIO_tell(f);
+ if (PerlIO_seek(f,-((Off_t)count),SEEK_CUR) == 0)
+ {
+ Off_t new = PerlIO_tell(f);
+ return old - new;
+ }
+ return 0;
+}
+
+IV
+PerlIOBase_sync(PerlIO *f)
+{
+ return 0;
+}
+
+IV
+PerlIOBase_close(PerlIO *f)
+{
+ IV code = 0;
+ if (PerlIO_flush(f) != 0)
+ code = -1;
+ if (PerlIO_close(PerlIONext(f)) != 0)
+ code = -1;
+ PerlIOBase(f)->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE|PERLIO_F_OPEN);
+ return code;
+}
+
+IV
+PerlIOBase_eof(PerlIO *f)
+{
+ if (f && *f)
+ {
+ return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0;
+ }
+ return 1;
+}
+
+IV
+PerlIOBase_error(PerlIO *f)
+{
+ if (f && *f)
+ {
+ return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0;
+ }
+ return 1;
+}
+
+void
+PerlIOBase_clearerr(PerlIO *f)
+{
+ if (f && *f)
+ {
+ PerlIOBase(f)->flags &= ~PERLIO_F_ERROR;
+ }
+}
+
+void
+PerlIOBase_setlinebuf(PerlIO *f)
+{
+
+}
+
+
+
+/*--------------------------------------------------------------------------------------*/
+/* Bottom-most level for UNIX-like case */
+
+typedef struct
+{
+ struct _PerlIO base; /* The generic part */
+ int fd; /* UNIX like file descriptor */
+ int oflags; /* open/fcntl flags */
+} PerlIOUnix;
+
int
-PerlIO_has_base(PerlIO *f)
+PerlIOUnix_oflags(const char *mode)
{
- if (f)
+ int oflags = -1;
+ switch(*mode)
+ {
+ case 'r':
+ oflags = O_RDONLY;
+ if (*++mode == '+')
+ {
+ oflags = O_RDWR;
+ mode++;
+ }
+ break;
+
+ case 'w':
+ oflags = O_CREAT|O_TRUNC;
+ if (*++mode == '+')
+ {
+ oflags |= O_RDWR;
+ mode++;
+ }
+ else
+ oflags |= O_WRONLY;
+ break;
+
+ case 'a':
+ oflags = O_CREAT|O_APPEND;
+ if (*++mode == '+')
+ {
+ oflags |= O_RDWR;
+ mode++;
+ }
+ else
+ oflags |= O_WRONLY;
+ break;
+ }
+ if (*mode || oflags == -1)
{
- if (!f->buf)
- PerlIO_alloc_buf(f);
- return f->buf != NULL;
+ errno = EINVAL;
+ oflags = -1;
}
+ return oflags;
+}
+
+IV
+PerlIOUnix_fileno(PerlIO *f)
+{
+ return PerlIOSelf(f,PerlIOUnix)->fd;
+}
+
+PerlIO *
+PerlIOUnix_fdopen(int fd,const char *mode)
+{
+ PerlIO *f = NULL;
+ if (fd >= 0)
+ {
+ int oflags = PerlIOUnix_oflags(mode);
+ if (oflags != -1)
+ {
+ PerlIOUnix *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),&PerlIO_unix,mode),PerlIOUnix);
+ s->fd = fd;
+ s->oflags = oflags;
+ PerlIOBase(f)->flags |= PERLIO_F_OPEN;
+ }
+ }
+ return f;
+}
+
+PerlIO *
+PerlIOUnix_open(const char *path,const char *mode)
+{
+ PerlIO *f = NULL;
+ int oflags = PerlIOUnix_oflags(mode);
+ if (oflags != -1)
+ {
+ int fd = open(path,oflags,0666);
+ if (fd >= 0)
+ {
+ PerlIOUnix *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),&PerlIO_unix,mode),PerlIOUnix);
+ s->fd = fd;
+ s->oflags = oflags;
+ PerlIOBase(f)->flags |= PERLIO_F_OPEN;
+ }
+ }
+ return f;
}
-#undef PerlIO_puts
int
-PerlIO_puts(PerlIO *f, const char *s)
+PerlIOUnix_reopen(const char *path, const char *mode, PerlIO *f)
{
- STRLEN len = strlen(s);
- return PerlIO_write(f,s,len);
+ PerlIOUnix *s = PerlIOSelf(f,PerlIOUnix);
+ int oflags = PerlIOUnix_oflags(mode);
+ if (PerlIOBase(f)->flags & PERLIO_F_OPEN)
+ (*PerlIOBase(f)->tab->Close)(f);
+ if (oflags != -1)
+ {
+ int fd = open(path,oflags,0666);
+ if (fd >= 0)
+ {
+ s->fd = fd;
+ s->oflags = oflags;
+ PerlIOBase(f)->flags |= PERLIO_F_OPEN;
+ return 0;
+ }
+ }
+ return -1;
+}
+
+SSize_t
+PerlIOUnix_read(PerlIO *f, void *vbuf, Size_t count)
+{
+ int fd = PerlIOSelf(f,PerlIOUnix)->fd;
+ while (1)
+ {
+ SSize_t len = read(fd,vbuf,count);
+ if (len >= 0 || errno != EINTR)
+ return len;
+ }
+}
+
+SSize_t
+PerlIOUnix_write(PerlIO *f, const void *vbuf, Size_t count)
+{
+ int fd = PerlIOSelf(f,PerlIOUnix)->fd;
+ while (1)
+ {
+ SSize_t len = write(fd,vbuf,count);
+ if (len >= 0 || errno != EINTR)
+ return len;
+ }
+}
+
+IV
+PerlIOUnix_seek(PerlIO *f, Off_t offset, int whence)
+{
+ Off_t new = lseek(PerlIOSelf(f,PerlIOUnix)->fd,offset,whence);
+ return (new == (Off_t) -1) ? -1 : 0;
+}
+
+Off_t
+PerlIOUnix_tell(PerlIO *f)
+{
+ return lseek(PerlIOSelf(f,PerlIOUnix)->fd,0,SEEK_CUR);
+}
+
+IV
+PerlIOUnix_close(PerlIO *f)
+{
+ int fd = PerlIOSelf(f,PerlIOUnix)->fd;
+ int code = 0;
+ while (close(fd) != 0)
+ {
+ if (errno != EINTR)
+ {
+ code = -1;
+ break;
+ }
+ }
+ if (code == 0)
+ {
+ PerlIOBase(f)->flags &= ~PERLIO_F_OPEN;
+ }
+ return code;
+}
+
+PerlIO_funcs PerlIO_unix = {
+ "unix",
+ sizeof(PerlIOUnix),
+ 0,
+ PerlIOUnix_fileno,
+ PerlIOUnix_fdopen,
+ PerlIOUnix_open,
+ PerlIOUnix_reopen,
+ PerlIOUnix_read,
+ PerlIOBase_unread,
+ PerlIOUnix_write,
+ PerlIOUnix_seek,
+ PerlIOUnix_tell,
+ PerlIOUnix_close,
+ PerlIOBase_sync,
+ PerlIOBase_eof,
+ PerlIOBase_error,
+ PerlIOBase_clearerr,
+ PerlIOBase_setlinebuf,
+ NULL, /* get_base */
+ NULL, /* get_bufsiz */
+ NULL, /* get_ptr */
+ NULL, /* get_cnt */
+ NULL, /* set_ptrcnt */
+};
+
+/*--------------------------------------------------------------------------------------*/
+/* stdio as a layer */
+
+typedef struct
+{
+ struct _PerlIO base;
+ FILE * stdio; /* The stream */
+} PerlIOStdio;
+
+IV
+PerlIOStdio_fileno(PerlIO *f)
+{
+ return fileno(PerlIOSelf(f,PerlIOStdio)->stdio);
+}
+
+
+PerlIO *
+PerlIOStdio_fdopen(int fd,const char *mode)
+{
+ PerlIO *f = NULL;
+ if (fd >= 0)
+ {
+ FILE *stdio = fdopen(fd,mode);
+ if (stdio)
+ {
+ PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),&PerlIO_stdio,mode),PerlIOStdio);
+ s->stdio = stdio;
+ }
+ }
+ return f;
+}
+
+#undef PerlIO_importFILE
+PerlIO *
+PerlIO_importFILE(FILE *stdio, int fl)
+{
+ PerlIO *f = NULL;
+ if (stdio)
+ {
+ PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),&PerlIO_stdio,"r+"),PerlIOStdio);
+ s->stdio = stdio;
+ }
+ return f;
+}
+
+PerlIO *
+PerlIOStdio_open(const char *path,const char *mode)
+{
+ PerlIO *f = NULL;
+ FILE *stdio = fopen(path,mode);
+ if (stdio)
+ {
+ PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),&PerlIO_stdio,mode),PerlIOStdio);
+ s->stdio = stdio;
+ }
+ return f;
}
-#undef PerlIO_eof
int
-PerlIO_eof(PerlIO *f)
+PerlIOStdio_reopen(const char *path, const char *mode, PerlIO *f)
+{
+ PerlIOStdio *s = PerlIOSelf(f,PerlIOStdio);
+ FILE *stdio = freopen(path,mode,s->stdio);
+ if (!s->stdio)
+ return -1;
+ s->stdio = stdio;
+ return 0;
+}
+
+SSize_t
+PerlIOStdio_read(PerlIO *f, void *vbuf, Size_t count)
+{
+ FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio;
+ if (count == 1)
+ {
+ STDCHAR *buf = (STDCHAR *) vbuf;
+ /* Perl is expecting PerlIO_getc() to fill the buffer
+ * Linux's stdio does not do that for fread()
+ */
+ int ch = fgetc(s);
+ if (ch != EOF)
+ {
+ *buf = ch;
+ return 1;
+ }
+ return 0;
+ }
+ return fread(vbuf,1,count,s);
+}
+
+SSize_t
+PerlIOStdio_unread(PerlIO *f, const void *vbuf, Size_t count)
+{
+ FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio;
+ STDCHAR *buf = ((STDCHAR *)vbuf)+count-1;
+ SSize_t unread = 0;
+ while (count > 0)
+ {
+ int ch = *buf-- & 0xff;
+ if (ungetc(ch,s) != ch)
+ break;
+ unread++;
+ count--;
+ }
+ return unread;
+}
+
+SSize_t
+PerlIOStdio_write(PerlIO *f, const void *vbuf, Size_t count)
+{
+ return fwrite(vbuf,1,count,PerlIOSelf(f,PerlIOStdio)->stdio);
+}
+
+IV
+PerlIOStdio_seek(PerlIO *f, Off_t offset, int whence)
+{
+ return fseek(PerlIOSelf(f,PerlIOStdio)->stdio,offset,whence);
+}
+
+Off_t
+PerlIOStdio_tell(PerlIO *f)
+{
+ return ftell(PerlIOSelf(f,PerlIOStdio)->stdio);
+}
+
+IV
+PerlIOStdio_close(PerlIO *f)
+{
+ return fclose(PerlIOSelf(f,PerlIOStdio)->stdio);
+}
+
+IV
+PerlIOStdio_flush(PerlIO *f)
+{
+ FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
+ return fflush(stdio);
+}
+
+IV
+PerlIOStdio_eof(PerlIO *f)
+{
+ return feof(PerlIOSelf(f,PerlIOStdio)->stdio);
+}
+
+IV
+PerlIOStdio_error(PerlIO *f)
+{
+ return ferror(PerlIOSelf(f,PerlIOStdio)->stdio);
+}
+
+void
+PerlIOStdio_clearerr(PerlIO *f)
+{
+ clearerr(PerlIOSelf(f,PerlIOStdio)->stdio);
+}
+
+void
+PerlIOStdio_setlinebuf(PerlIO *f)
+{
+#ifdef HAS_SETLINEBUF
+ setlinebuf(PerlIOSelf(f,PerlIOStdio)->stdio);
+#else
+ setvbuf(PerlIOSelf(f,PerlIOStdio)->stdio, Nullch, _IOLBF, 0);
+#endif
+}
+
+#ifdef FILE_base
+STDCHAR *
+PerlIOStdio_get_base(PerlIO *f)
+{
+ FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
+ return FILE_base(stdio);
+}
+
+Size_t
+PerlIOStdio_get_bufsiz(PerlIO *f)
+{
+ FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
+ return FILE_bufsiz(stdio);
+}
+#endif
+
+#ifdef USE_STDIO_PTR
+STDCHAR *
+PerlIOStdio_get_ptr(PerlIO *f)
+{
+ FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
+ return FILE_ptr(stdio);
+}
+
+SSize_t
+PerlIOStdio_get_cnt(PerlIO *f)
+{
+ FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
+ return FILE_cnt(stdio);
+}
+
+void
+PerlIOStdio_set_ptrcnt(PerlIO *f,STDCHAR *ptr,SSize_t cnt)
+{
+ FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
+ if (ptr != NULL)
+ {
+#ifdef STDIO_PTR_LVALUE
+ FILE_ptr(stdio) = ptr;
+#ifdef STDIO_PTR_LVAL_SETS_CNT
+ if (FILE_cnt(stdio) != (cnt))
+ {
+ dTHX;
+ assert(FILE_cnt(stdio) == (cnt));
+ }
+#endif
+#if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT))
+ /* Setting ptr _does_ change cnt - we are done */
+ return;
+#endif
+#else /* STDIO_PTR_LVALUE */
+ abort();
+#endif /* STDIO_PTR_LVALUE */
+ }
+/* Now (or only) set cnt */
+#ifdef STDIO_CNT_LVALUE
+ FILE_cnt(stdio) = cnt;
+#else /* STDIO_CNT_LVALUE */
+#if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT))
+ FILE_ptr(stdio) = FILE_ptr(stdio)+(FILE_cnt(stdio)-cnt);
+#else /* STDIO_PTR_LVAL_SETS_CNT */
+ abort();
+#endif /* STDIO_PTR_LVAL_SETS_CNT */
+#endif /* STDIO_CNT_LVALUE */
+}
+
+#endif
+
+PerlIO_funcs PerlIO_stdio = {
+ "stdio",
+ sizeof(PerlIOStdio),
+ 0,
+ PerlIOStdio_fileno,
+ PerlIOStdio_fdopen,
+ PerlIOStdio_open,
+ PerlIOStdio_reopen,
+ PerlIOStdio_read,
+ PerlIOStdio_unread,
+ PerlIOStdio_write,
+ PerlIOStdio_seek,
+ PerlIOStdio_tell,
+ PerlIOStdio_close,
+ PerlIOStdio_flush,
+ PerlIOStdio_eof,
+ PerlIOStdio_error,
+ PerlIOStdio_clearerr,
+ PerlIOStdio_setlinebuf,
+#ifdef FILE_base
+ PerlIOStdio_get_base,
+ PerlIOStdio_get_bufsiz,
+#else
+ NULL,
+ NULL,
+#endif
+#ifdef USE_STDIO_PTR
+ PerlIOStdio_get_ptr,
+ PerlIOStdio_get_cnt,
+#if (defined(STDIO_PTR_LVALUE) && \
+ (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT)))
+ PerlIOStdio_set_ptrcnt
+#else /* STDIO_PTR_LVALUE */
+ NULL
+#endif /* STDIO_PTR_LVALUE */
+#else /* USE_STDIO_PTR */
+ NULL,
+ NULL,
+ NULL
+#endif /* USE_STDIO_PTR */
+};
+
+#undef PerlIO_exportFILE
+FILE *
+PerlIO_exportFILE(PerlIO *f, int fl)
+{
+ PerlIO_flush(f);
+ /* Should really push stdio discipline when we have them */
+ return fdopen(PerlIO_fileno(f),"r+");
+}
+
+#undef PerlIO_findFILE
+FILE *
+PerlIO_findFILE(PerlIO *f)
+{
+ return PerlIO_exportFILE(f,0);
+}
+
+#undef PerlIO_releaseFILE
+void
+PerlIO_releaseFILE(PerlIO *p, FILE *f)
+{
+}
+
+/*--------------------------------------------------------------------------------------*/
+/* perlio buffer layer */
+
+typedef struct
{
+ struct _PerlIO base;
+ Off_t posn; /* Offset of buf into the file */
+ STDCHAR * buf; /* Start of buffer */
+ STDCHAR * end; /* End of valid part of buffer */
+ STDCHAR * ptr; /* Current position in buffer */
+ Size_t bufsiz; /* Size of buffer */
+ IV oneword; /* Emergency buffer */
+} PerlIOBuf;
+
+
+PerlIO *
+PerlIOBuf_fdopen(int fd, const char *mode)
+{
+ PerlIO_funcs *tab = PerlIO_default_btm();
+ PerlIO *f = (*tab->Fdopen)(fd,mode);
if (f)
{
- return (f->flags & PERLIO_F_EOF) != 0;
+ PerlIOBuf *b = PerlIOSelf(PerlIO_push(f,&PerlIO_perlio,NULL),PerlIOBuf);
+ b->posn = PerlIO_tell(PerlIONext(f));
}
- return 1;
+ return f;
}
-#undef PerlIO_getname
-char *
-PerlIO_getname(PerlIO *f, char *buf)
+PerlIO *
+PerlIOBuf_open(const char *path, const char *mode)
{
- dTHX;
- Perl_croak(aTHX_ "Don't know how to get file name");
- return NULL;
+ PerlIO_funcs *tab = PerlIO_default_btm();
+ PerlIO *f = (*tab->Open)(path,mode);
+ if (f)
+ {
+ PerlIOBuf *b = PerlIOSelf(PerlIO_push(f,&PerlIO_perlio,NULL),PerlIOBuf);
+ b->posn = 0;
+ }
+ return f;
+}
+
+int
+PerlIOBase_reopen(const char *path, const char *mode, PerlIO *f)
+{
+ return (*PerlIOBase(f)->tab->Reopen)(path,mode,PerlIONext(f));
+}
+
+void
+PerlIOBuf_alloc_buf(PerlIOBuf *b)
+{
+ if (!b->bufsiz)
+ b->bufsiz = 4096;
+ New('B',b->buf,b->bufsiz,char);
+ if (!b->buf)
+ {
+ b->buf = (STDCHAR *)&b->oneword;
+ b->bufsiz = sizeof(b->oneword);
+ }
+ b->ptr = b->buf;
+ b->end = b->ptr;
}
-#undef PerlIO_ungetc
-int
-PerlIO_ungetc(PerlIO *f, int ch)
+/* This "flush" is akin to sfio's sync in that it handles files in either
+ read or write state
+*/
+IV
+PerlIOBuf_flush(PerlIO *f)
{
- if (f->buf && (f->flags & PERLIO_F_RDBUF) && f->ptr > f->buf)
+ PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
+ int code = 0;
+ if (PerlIOBase(f)->flags & PERLIO_F_WRBUF)
+ {
+ /* write() the buffer */
+ STDCHAR *p = b->buf;
+ int count;
+ while (p < b->ptr)
+ {
+ count = PerlIO_write(PerlIONext(f),p,b->ptr - p);
+ if (count > 0)
+ {
+ p += count;
+ }
+ else if (count < 0)
+ {
+ PerlIOBase(f)->flags |= PERLIO_F_ERROR;
+ code = -1;
+ break;
+ }
+ }
+ b->posn += (p - b->buf);
+ }
+ else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF)
{
- *--(f->ptr) = ch;
- return ch;
+ /* Note position change */
+ b->posn += (b->ptr - b->buf);
+ if (b->ptr < b->end)
+ {
+ /* We did not consume all of it */
+ if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) == 0)
+ {
+ b->posn = PerlIO_tell(PerlIONext(f));
+ }
+ }
}
- return -1;
+ b->ptr = b->end = b->buf;
+ PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF);
+ if (PerlIO_flush(PerlIONext(f)) != 0)
+ code = -1;
+ return code;
}
-#undef PerlIO_read
SSize_t
-PerlIO_read(PerlIO *f, void *vbuf, Size_t count)
+PerlIOBuf_read(PerlIO *f, void *vbuf, Size_t count)
{
+ PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
STDCHAR *buf = (STDCHAR *) vbuf;
if (f)
{
Size_t got = 0;
- if (!f->ptr)
- PerlIO_alloc_buf(f);
- if ((f->oflags & (O_RDONLY|O_WRONLY|O_RDWR)) == O_WRONLY)
+ if (!b->ptr)
+ PerlIOBuf_alloc_buf(b);
+ if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD))
return 0;
while (count > 0)
{
- SSize_t avail = (f->end - f->ptr);
+ SSize_t avail = (b->end - b->ptr);
if ((SSize_t) count < avail)
avail = count;
if (avail > 0)
{
- Copy(f->ptr,buf,avail,char);
+ Copy(b->ptr,buf,avail,char);
got += avail;
- f->ptr += avail;
+ b->ptr += avail;
count -= avail;
buf += avail;
}
- if (count && (f->ptr >= f->end))
+ if (count && (b->ptr >= b->end))
{
PerlIO_flush(f);
- f->ptr = f->end = f->buf;
- avail = read(f->fd,f->ptr,f->bufsiz);
+ b->ptr = b->end = b->buf;
+ avail = PerlIO_read(PerlIONext(f),b->ptr,b->bufsiz);
if (avail <= 0)
{
if (avail == 0)
- f->flags |= PERLIO_F_EOF;
- else if (errno == EINTR)
- continue;
+ PerlIOBase(f)->flags |= PERLIO_F_EOF;
else
- f->flags |= PERLIO_F_ERROR;
+ PerlIOBase(f)->flags |= PERLIO_F_ERROR;
break;
}
- f->end = f->buf+avail;
- f->flags |= PERLIO_F_RDBUF;
+ b->end = b->buf+avail;
+ PerlIOBase(f)->flags |= PERLIO_F_RDBUF;
}
}
return got;
return 0;
}
-#undef PerlIO_getc
-int
-PerlIO_getc(PerlIO *f)
+SSize_t
+PerlIOBuf_unread(PerlIO *f, const void *vbuf, Size_t count)
{
- STDCHAR buf;
- int count = PerlIO_read(f,&buf,1);
- if (count == 1)
- return (unsigned char) buf;
- return -1;
+ const STDCHAR *buf = (const STDCHAR *) vbuf+count;
+ PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
+ SSize_t unread = 0;
+ SSize_t avail;
+ if (!b->buf)
+ PerlIOBuf_alloc_buf(b);
+ if (PerlIOBase(f)->flags & PERLIO_F_WRBUF)
+ PerlIO_flush(f);
+ if (b->buf)
+ {
+ if (PerlIOBase(f)->flags & PERLIO_F_RDBUF)
+ {
+ avail = (b->ptr - b->buf);
+ if (avail > (SSize_t) count)
+ avail = count;
+ b->ptr -= avail;
+ }
+ else
+ {
+ avail = b->bufsiz;
+ if (avail > (SSize_t) count)
+ avail = count;
+ b->end = b->ptr + avail;
+ }
+ if (avail > 0)
+ {
+ buf -= avail;
+ if (buf != b->ptr)
+ {
+ Copy(buf,b->ptr,avail,char);
+ }
+ count -= avail;
+ unread += avail;
+ PerlIOBase(f)->flags &= ~ PERLIO_F_EOF;
+ }
+ }
+ return unread;
}
-#undef PerlIO_error
-int
-PerlIO_error(PerlIO *f)
+SSize_t
+PerlIOBuf_write(PerlIO *f, const void *vbuf, Size_t count)
{
- if (f)
+ PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
+ const STDCHAR *buf = (const STDCHAR *) vbuf;
+ Size_t written = 0;
+ if (!b->buf)
+ PerlIOBuf_alloc_buf(b);
+ if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE))
+ return 0;
+ while (count > 0)
+ {
+ SSize_t avail = b->bufsiz - (b->ptr - b->buf);
+ if ((SSize_t) count < avail)
+ avail = count;
+ PerlIOBase(f)->flags |= PERLIO_F_WRBUF;
+ if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF)
+ {
+ while (avail > 0)
+ {
+ int ch = *buf++;
+ *(b->ptr)++ = ch;
+ count--;
+ avail--;
+ written++;
+ if (ch == '\n')
+ {
+ PerlIO_flush(f);
+ break;
+ }
+ }
+ }
+ else
+ {
+ if (avail)
+ {
+ Copy(buf,b->ptr,avail,char);
+ count -= avail;
+ buf += avail;
+ written += avail;
+ b->ptr += avail;
+ }
+ }
+ if (b->ptr >= (b->buf + b->bufsiz))
+ PerlIO_flush(f);
+ }
+ return written;
+}
+
+IV
+PerlIOBuf_seek(PerlIO *f, Off_t offset, int whence)
+{
+ PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
+ int code;
+ code = PerlIO_flush(f);
+ if (code == 0)
+ {
+ PerlIOBase(f)->flags &= ~PERLIO_F_EOF;
+ code = PerlIO_seek(PerlIONext(f),offset,whence);
+ if (code == 0)
+ {
+ b->posn = PerlIO_tell(PerlIONext(f));
+ }
+ }
+ return code;
+}
+
+Off_t
+PerlIOBuf_tell(PerlIO *f)
+{
+ PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
+ Off_t posn = b->posn;
+ if (b->buf)
+ posn += (b->ptr - b->buf);
+ return posn;
+}
+
+IV
+PerlIOBuf_close(PerlIO *f)
+{
+ IV code = PerlIOBase_close(f);
+ PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
+ if (b->buf && b->buf != (STDCHAR *) &b->oneword)
{
- return f->flags & PERLIO_F_ERROR;
+ Safefree(b->buf);
}
- return 1;
+ b->buf = NULL;
+ b->ptr = b->end = b->buf;
+ PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF);
+ return code;
}
-#undef PerlIO_clearerr
void
-PerlIO_clearerr(PerlIO *f)
+PerlIOBuf_setlinebuf(PerlIO *f)
{
if (f)
{
- f->flags &= ~PERLIO_F_ERROR;
+ PerlIOBase(f)->flags &= ~PERLIO_F_LINEBUF;
}
}
-#undef PerlIO_setlinebuf
void
-PerlIO_setlinebuf(PerlIO *f)
+PerlIOBuf_set_cnt(PerlIO *f, int cnt)
{
- if (f)
+ PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
+ dTHX;
+ if (!b->buf)
+ PerlIOBuf_alloc_buf(b);
+ b->ptr = b->end - cnt;
+ assert(b->ptr >= b->buf);
+}
+
+STDCHAR *
+PerlIOBuf_get_ptr(PerlIO *f)
+{
+ PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
+ if (!b->buf)
+ PerlIOBuf_alloc_buf(b);
+ return b->ptr;
+}
+
+int
+PerlIOBuf_get_cnt(PerlIO *f)
+{
+ PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
+ if (!b->buf)
+ PerlIOBuf_alloc_buf(b);
+ if (PerlIOBase(f)->flags & PERLIO_F_RDBUF)
+ return (b->end - b->ptr);
+ return 0;
+}
+
+STDCHAR *
+PerlIOBuf_get_base(PerlIO *f)
+{
+ PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
+ if (!b->buf)
+ PerlIOBuf_alloc_buf(b);
+ return b->buf;
+}
+
+Size_t
+PerlIOBuf_bufsiz(PerlIO *f)
+{
+ PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
+ if (!b->buf)
+ PerlIOBuf_alloc_buf(b);
+ return (b->end - b->buf);
+}
+
+void
+PerlIOBuf_set_ptrcnt(PerlIO *f, STDCHAR *ptr, int cnt)
+{
+ PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
+ if (!b->buf)
+ PerlIOBuf_alloc_buf(b);
+ b->ptr = ptr;
+ if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf)
{
- f->flags &= ~PERLIO_F_LINEBUF;
+ dTHX;
+ assert(PerlIO_get_cnt(f) == cnt);
+ assert(b->ptr >= b->buf);
}
+ PerlIOBase(f)->flags |= PERLIO_F_RDBUF;
}
-#undef PerlIO_write
-SSize_t
-PerlIO_write(PerlIO *f, const void *vbuf, Size_t count)
+PerlIO_funcs PerlIO_perlio = {
+ "perlio",
+ sizeof(PerlIOBuf),
+ 0,
+ PerlIOBase_fileno,
+ PerlIOBuf_fdopen,
+ PerlIOBuf_open,
+ PerlIOBase_reopen,
+ PerlIOBuf_read,
+ PerlIOBuf_unread,
+ PerlIOBuf_write,
+ PerlIOBuf_seek,
+ PerlIOBuf_tell,
+ PerlIOBuf_close,
+ PerlIOBuf_flush,
+ PerlIOBase_eof,
+ PerlIOBase_error,
+ PerlIOBase_clearerr,
+ PerlIOBuf_setlinebuf,
+ PerlIOBuf_get_base,
+ PerlIOBuf_bufsiz,
+ PerlIOBuf_get_ptr,
+ PerlIOBuf_get_cnt,
+ PerlIOBuf_set_ptrcnt,
+};
+
+void
+PerlIO_init(void)
{
- const STDCHAR *buf = (const STDCHAR *) vbuf;
- Size_t written = 0;
- if (f)
+ if (!_perlio)
{
- if (!f->buf)
- PerlIO_alloc_buf(f);
- if ((f->oflags & (O_RDONLY|O_WRONLY|O_RDWR)) == O_RDONLY)
- return 0;
- while (count > 0)
- {
- SSize_t avail = f->bufsiz - (f->ptr - f->buf);
- if ((SSize_t) count < avail)
- avail = count;
- f->flags |= PERLIO_F_WRBUF;
- if (f->flags & PERLIO_F_LINEBUF)
- {
- while (avail > 0)
- {
- int ch = *buf++;
- *(f->ptr)++ = ch;
- count--;
- avail--;
- written++;
- if (ch == '\n')
- {
- PerlIO_flush(f);
- break;
- }
- }
- }
- else
- {
- if (avail)
- {
- Copy(buf,f->ptr,avail,char);
- count -= avail;
- buf += avail;
- written += avail;
- f->ptr += avail;
- }
- }
- if (f->ptr >= (f->buf + f->bufsiz))
- PerlIO_flush(f);
- }
+ atexit(&PerlIO_cleanup);
+ PerlIO_fdopen(0,"r");
+ PerlIO_fdopen(1,"w");
+ PerlIO_fdopen(2,"w");
}
- return written;
}
-#undef PerlIO_putc
+#undef PerlIO_stdin
+PerlIO *
+PerlIO_stdin(void)
+{
+ if (!_perlio)
+ PerlIO_init();
+ return _perlio[0];
+}
+
+#undef PerlIO_stdout
+PerlIO *
+PerlIO_stdout(void)
+{
+ if (!_perlio)
+ PerlIO_init();
+ return _perlio[1];
+}
+
+#undef PerlIO_stderr
+PerlIO *
+PerlIO_stderr(void)
+{
+ if (!_perlio)
+ PerlIO_init();
+ return _perlio[2];
+}
+
+/*--------------------------------------------------------------------------------------*/
+
+#undef PerlIO_getname
+char *
+PerlIO_getname(PerlIO *f, char *buf)
+{
+ dTHX;
+ Perl_croak(aTHX_ "Don't know how to get file name");
+ return NULL;
+}
+
+
+/*--------------------------------------------------------------------------------------*/
+/* Functions which can be called on any kind of PerlIO implemented
+ in terms of above
+*/
+
+#undef PerlIO_getc
int
-PerlIO_putc(PerlIO *f, int ch)
+PerlIO_getc(PerlIO *f)
{
- STDCHAR buf = ch;
- PerlIO_write(f,&buf,1);
+ STDCHAR buf;
+ int count = PerlIO_read(f,&buf,1);
+ if (count == 1)
+ return (unsigned char) buf;
+ return -1;
}
-#undef PerlIO_tell
-Off_t
-PerlIO_tell(PerlIO *f)
+#undef PerlIO_putc
+int
+PerlIO_putc(PerlIO *f, int ch)
{
- Off_t posn = f->posn;
- if (f->buf)
- posn += (f->ptr - f->buf);
- return posn;
+ STDCHAR buf = ch;
+ return PerlIO_write(f,&buf,1);
}
-#undef PerlIO_seek
+#undef PerlIO_puts
int
-PerlIO_seek(PerlIO *f, Off_t offset, int whence)
+PerlIO_puts(PerlIO *f, const char *s)
{
- int code;
- code = PerlIO_flush(f);
- if (code == 0)
- {
- f->flags &= ~PERLIO_F_EOF;
- f->posn = PerlLIO_lseek(f->fd,offset,whence);
- if (f->posn == (Off_t) -1)
- {
- f->posn = 0;
- code = -1;
- }
- }
- return code;
+ STRLEN len = strlen(s);
+ return PerlIO_write(f,s,len);
}
#undef PerlIO_rewind
PerlIO_rewind(PerlIO *f)
{
PerlIO_seek(f,(Off_t)0,SEEK_SET);
+ PerlIO_clearerr(f);
}
#undef PerlIO_vprintf
f = PerlIO_fdopen(fd,"w+");
if (f)
{
- f->flags |= PERLIO_F_TEMP;
+ PerlIOBase(f)->flags |= PERLIO_F_TEMP;
}
unlink(SvPVX(sv));
SvREFCNT_dec(sv);
return f;
}
-#undef PerlIO_importFILE
-PerlIO *
-PerlIO_importFILE(FILE *f, int fl)
-{
- int fd = fileno(f);
- /* Should really push stdio discipline when we have them */
- return PerlIO_fdopen(fd,"r+");
-}
-
-#undef PerlIO_exportFILE
-FILE *
-PerlIO_exportFILE(PerlIO *f, int fl)
-{
- PerlIO_flush(f);
- /* Should really push stdio discipline when we have them */
- return fdopen(PerlIO_fileno(f),"r+");
-}
-
-#undef PerlIO_findFILE
-FILE *
-PerlIO_findFILE(PerlIO *f)
-{
- return PerlIO_exportFILE(f,0);
-}
-
-#undef PerlIO_releaseFILE
-void
-PerlIO_releaseFILE(PerlIO *p, FILE *f)
-{
-}
-
#undef HAS_FSETPOS
#undef HAS_FGETPOS
-/*======================================================================================*/
-
#endif /* USE_SFIO */
#endif /* PERLIO_IS_STDIO */
+/*======================================================================================*/
+/* Now some functions in terms of above which may be needed even if
+ we are not in true PerlIO mode
+ */
+
#ifndef HAS_FSETPOS
#undef PerlIO_setpos
int
projects / p5sagit/p5-mst-13.2.git / commitdiff