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2003-05-27 Jakub Jelinek <jakub@redhat.com> * stdio-common/vfprintf.c (process_arg, process_string_arg): Use pa_int/pa_u_int instead of pa_short_int, pa_u_short_int and pa_char. * stdio-common/printf-parse.h (union printf_arg): Remove pa_char, pa_short_int, pa_u_short_int and pa_float. 2003-05-26 Jakub Jelinek <jakub@redhat.com> * libio/strops.c (_IO_str_init_static): Change into a wrapper around _IO_str_init_static_internal. (_IO_str_init_static_internal): Moved from _IO_str_init_static, change size argument to _IO_size_t, don't limit sprintf to 64M. (_IO_str_init_readonly): Call _IO_str_init_static_internal. * libio/wstrops.c (_IO_wstr_init_static): Change size argument to _IO_size_t, don't limit swprintf to 256M. (_IO_wstr_init_readonly): Remove. * libio/libioP.h (_IO_str_init_static_internal, _IO_wstr_init_static): Adjust prototypes. (_IO_wstr_init_readonly): Remove prototype. * libio/iovsprintf.c (_IO_vsprintf): Use _IO_str_init_static_internal instead of INTUSE(_IO_str_init_static). * libio/iovsscanf.c (_IO_vsscanf): Likewise. * libio/memstream.c (open_memstream): Likewise. * libio/obprintf.c (_IO_obstack_vfprintf): Likewise. * libio/vasprintf.c (_IO_vasprintf): Likewise. * libio/vsnprintf.c (_IO_vsnprintf): Likewise. * stdio-common/tst-sprintf.c (main): Add new test.
141 lines
4.6 KiB
C
141 lines
4.6 KiB
C
/* Copyright (C) 1994,1997,1999-2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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As a special exception, if you link the code in this file with
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files compiled with a GNU compiler to produce an executable,
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that does not cause the resulting executable to be covered by
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the GNU Lesser General Public License. This exception does not
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however invalidate any other reasons why the executable file
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might be covered by the GNU Lesser General Public License.
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This exception applies to code released by its copyright holders
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in files containing the exception. */
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#include "libioP.h"
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#include "strfile.h"
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typedef struct
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{
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_IO_strfile f;
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/* This is used for the characters which do not fit in the buffer
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provided by the user. */
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char overflow_buf[64];
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} _IO_strnfile;
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static int _IO_strn_overflow __P ((_IO_FILE *fp, int c));
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static int
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_IO_strn_overflow (fp, c)
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_IO_FILE *fp;
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int c;
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{
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/* When we come to here this means the user supplied buffer is
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filled. But since we must return the number of characters which
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would have been written in total we must provide a buffer for
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further use. We can do this by writing on and on in the overflow
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buffer in the _IO_strnfile structure. */
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_IO_strnfile *snf = (_IO_strnfile *) fp;
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if (fp->_IO_buf_base != snf->overflow_buf)
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{
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/* Terminate the string. We know that there is room for at
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least one more character since we initialized the stream with
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a size to make this possible. */
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*fp->_IO_write_ptr = '\0';
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INTUSE(_IO_setb) (fp, snf->overflow_buf,
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snf->overflow_buf + sizeof (snf->overflow_buf), 0);
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fp->_IO_write_base = snf->overflow_buf;
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fp->_IO_read_base = snf->overflow_buf;
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fp->_IO_read_ptr = snf->overflow_buf;
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fp->_IO_read_end = snf->overflow_buf + sizeof (snf->overflow_buf);
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}
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fp->_IO_write_ptr = snf->overflow_buf;
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fp->_IO_write_end = snf->overflow_buf;
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/* Since we are not really interested in storing the characters
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which do not fit in the buffer we simply ignore it. */
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return c;
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}
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static struct _IO_jump_t _IO_strn_jumps =
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{
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JUMP_INIT_DUMMY,
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JUMP_INIT(finish, _IO_str_finish),
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JUMP_INIT(overflow, _IO_strn_overflow),
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JUMP_INIT(underflow, INTUSE(_IO_str_underflow)),
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JUMP_INIT(uflow, INTUSE(_IO_default_uflow)),
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JUMP_INIT(pbackfail, INTUSE(_IO_str_pbackfail)),
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JUMP_INIT(xsputn, INTUSE(_IO_default_xsputn)),
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JUMP_INIT(xsgetn, INTUSE(_IO_default_xsgetn)),
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JUMP_INIT(seekoff, INTUSE(_IO_str_seekoff)),
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JUMP_INIT(seekpos, _IO_default_seekpos),
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JUMP_INIT(setbuf, _IO_default_setbuf),
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JUMP_INIT(sync, _IO_default_sync),
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JUMP_INIT(doallocate, INTUSE(_IO_default_doallocate)),
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JUMP_INIT(read, _IO_default_read),
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JUMP_INIT(write, _IO_default_write),
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JUMP_INIT(seek, _IO_default_seek),
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JUMP_INIT(close, _IO_default_close),
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JUMP_INIT(stat, _IO_default_stat),
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JUMP_INIT(showmanyc, _IO_default_showmanyc),
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JUMP_INIT(imbue, _IO_default_imbue)
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};
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int
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_IO_vsnprintf (string, maxlen, format, args)
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char *string;
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_IO_size_t maxlen;
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const char *format;
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_IO_va_list args;
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{
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_IO_strnfile sf;
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int ret;
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#ifdef _IO_MTSAFE_IO
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sf.f._sbf._f._lock = NULL;
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#endif
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/* We need to handle the special case where MAXLEN is 0. Use the
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overflow buffer right from the start. */
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if (maxlen == 0)
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{
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string = sf.overflow_buf;
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maxlen = sizeof (sf.overflow_buf);
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}
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_IO_no_init (&sf.f._sbf._f, _IO_USER_LOCK, -1, NULL, NULL);
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_IO_JUMPS ((struct _IO_FILE_plus *) &sf.f._sbf) = &_IO_strn_jumps;
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string[0] = '\0';
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_IO_str_init_static_internal (&sf.f, string, maxlen - 1, string);
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ret = INTUSE(_IO_vfprintf) ((_IO_FILE *) &sf.f._sbf, format, args);
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if (sf.f._sbf._f._IO_buf_base != sf.overflow_buf)
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*sf.f._sbf._f._IO_write_ptr = '\0';
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return ret;
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}
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#ifdef weak_alias
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weak_alias (_IO_vsnprintf, __vsnprintf)
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weak_alias (_IO_vsnprintf, vsnprintf)
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#endif
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