License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
-
-#include <stdlib.h>
-#include "libioP.h"
-#include "strfile.h"
#include <assert.h>
-#include <string.h>
-#include <errno.h>
+#include <math_ldbl_opt.h>
#include <obstack.h>
+#include <printf.h>
#include <stdarg.h>
-#include <stdio_ext.h>
-
+#include <printf_buffer.h>
-struct _IO_obstack_file
+struct __printf_buffer_obstack
{
- struct _IO_FILE_plus file;
+ struct __printf_buffer base;
struct obstack *obstack;
-};
-
-
-static int
-_IO_obstack_overflow (FILE *fp, int c)
-{
- struct obstack *obstack = ((struct _IO_obstack_file *) fp)->obstack;
- int size;
-
- /* Make room for another character. This might as well allocate a
- new chunk a memory and moves the old contents over. */
- assert (c != EOF);
- obstack_1grow (obstack, c);
-
- /* Setup the buffer pointers again. */
- fp->_IO_write_base = obstack_base (obstack);
- fp->_IO_write_ptr = obstack_next_free (obstack);
- size = obstack_room (obstack);
- fp->_IO_write_end = fp->_IO_write_ptr + size;
- /* Now allocate the rest of the current chunk. */
- obstack_blank_fast (obstack, size);
-
- return c;
-}
+ /* obstack_1grow is called for compatibility reasons. This needs
+ one extra character, and this is the backing store for it. */
+ char ch;
+};
-static size_t
-_IO_obstack_xsputn (FILE *fp, const void *data, size_t n)
+void
+__printf_buffer_flush_obstack (struct __printf_buffer_obstack *buf)
{
- struct obstack *obstack = ((struct _IO_obstack_file *) fp)->obstack;
+ /* About to switch buffers, so record the bytes written so far. */
+ buf->base.written += buf->base.write_ptr - buf->base.write_base;
- if (fp->_IO_write_ptr + n > fp->_IO_write_end)
+ if (buf->base.write_ptr == &buf->ch + 1)
{
- int size;
-
- /* We need some more memory. First shrink the buffer to the
- space we really currently need. */
- obstack_blank_fast (obstack, fp->_IO_write_ptr - fp->_IO_write_end);
-
- /* Now grow for N bytes, and put the data there. */
- obstack_grow (obstack, data, n);
-
- /* Setup the buffer pointers again. */
- fp->_IO_write_base = obstack_base (obstack);
- fp->_IO_write_ptr = obstack_next_free (obstack);
- size = obstack_room (obstack);
- fp->_IO_write_end = fp->_IO_write_ptr + size;
- /* Now allocate the rest of the current chunk. */
- obstack_blank_fast (obstack, size);
+ /* Errors are reported via a callback mechanism (presumably for
+ process termination). */
+ obstack_1grow (buf->obstack, buf->ch);
+ buf->base.write_base = obstack_next_free (buf->obstack);
+ buf->base.write_ptr = buf->base.write_base;
+ size_t size = obstack_room (buf->obstack);
+ buf->base.write_end = buf->base.write_ptr + size;
+ /* Reserve the space on the obstack size. */
+ obstack_blank_fast (buf->obstack, size);
}
else
- fp->_IO_write_ptr = __mempcpy (fp->_IO_write_ptr, data, n);
-
- return n;
+ {
+ /* Obtain the extra character. */
+ buf->base.write_base = &buf->ch;
+ buf->base.write_ptr = &buf->ch;
+ buf->base.write_end = &buf->ch + 1;
+ }
}
-
-/* the jump table. */
-const struct _IO_jump_t _IO_obstack_jumps libio_vtable attribute_hidden =
-{
- JUMP_INIT_DUMMY,
- JUMP_INIT(finish, NULL),
- JUMP_INIT(overflow, _IO_obstack_overflow),
- JUMP_INIT(underflow, NULL),
- JUMP_INIT(uflow, NULL),
- JUMP_INIT(pbackfail, NULL),
- JUMP_INIT(xsputn, _IO_obstack_xsputn),
- JUMP_INIT(xsgetn, NULL),
- JUMP_INIT(seekoff, NULL),
- JUMP_INIT(seekpos, NULL),
- JUMP_INIT(setbuf, NULL),
- JUMP_INIT(sync, NULL),
- JUMP_INIT(doallocate, NULL),
- JUMP_INIT(read, NULL),
- JUMP_INIT(write, NULL),
- JUMP_INIT(seek, NULL),
- JUMP_INIT(close, NULL),
- JUMP_INIT(stat, NULL),
- JUMP_INIT(showmanyc, NULL),
- JUMP_INIT(imbue, NULL)
-};
-
-
int
__obstack_vprintf_internal (struct obstack *obstack, const char *format,
va_list args, unsigned int mode_flags)
{
- struct obstack_FILE
- {
- struct _IO_obstack_file ofile;
- } new_f;
- int result;
- int size;
- int room;
-
-#ifdef _IO_MTSAFE_IO
- new_f.ofile.file.file._lock = NULL;
-#endif
-
- _IO_no_init (&new_f.ofile.file.file, _IO_USER_LOCK, -1, NULL, NULL);
- _IO_JUMPS (&new_f.ofile.file) = &_IO_obstack_jumps;
- room = obstack_room (obstack);
- size = obstack_object_size (obstack) + room;
+ /* Legacy setup code for compatibility. */
+ size_t room = obstack_room (obstack);
+ size_t size = obstack_object_size (obstack) + room;
if (size == 0)
{
- /* We have to handle the allocation a bit different since the
- `_IO_str_init_static' function would handle a size of zero
- different from what we expect. */
-
/* Get more memory. */
obstack_make_room (obstack, 64);
assert (size != 0);
}
- _IO_str_init_static_internal ((struct _IO_strfile_ *) &new_f.ofile,
- obstack_base (obstack),
- size, obstack_next_free (obstack));
+ struct __printf_buffer_obstack buf;
+ {
+ /* The obstack write location might be in the middle of an object. */
+ char *ptr = obstack_next_free (obstack);
+ char *end = obstack_base (obstack) + size;
+ __printf_buffer_init (&buf.base, ptr, end - ptr,
+ __printf_buffer_mode_obstack);
+ }
+ buf.obstack = obstack;
+
/* Now allocate the rest of the current chunk. */
- assert (size == (new_f.ofile.file.file._IO_write_end
- - new_f.ofile.file.file._IO_write_base));
- assert (new_f.ofile.file.file._IO_write_ptr
- == (new_f.ofile.file.file._IO_write_base
- + obstack_object_size (obstack)));
obstack_blank_fast (obstack, room);
- new_f.ofile.obstack = obstack;
-
- result = __vfprintf_internal (&new_f.ofile.file.file, format, args,
- mode_flags);
+ __printf_buffer (&buf.base, format, args, mode_flags);
- /* Shrink the buffer to the space we really currently need. */
- obstack_blank_fast (obstack, (new_f.ofile.file.file._IO_write_ptr
- - new_f.ofile.file.file._IO_write_end));
+ if (buf.base.write_ptr == &buf.ch + 1)
+ /* buf.ch is in use. Put it into the obstack. */
+ obstack_1grow (buf.obstack, buf.ch);
+ else if (buf.base.write_ptr != &buf.ch)
+ /* Shrink the buffer to the space we really currently need. */
+ obstack_blank_fast (buf.obstack, buf.base.write_ptr - buf.base.write_end);
- return result;
+ return __printf_buffer_done (&buf.base);
}
int
projects / thirdparty / glibc.git / commitdiff
