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2004-04-23 Jeff Johnston <jjohnstn@redhat.com> 

* libc/machine/powerpc/vfscanf.c (NNZDIGITS): New define.
        (__svfscanf_r): In integer conversions, leave out leading zeroes
        which are not part of a base prefix.
        Keep track of width truncation to fit into buf, not counting left-out
        zeroes against width till the truncation has been compensated for.
        This is based on Joern's patch of 04/21 for libc/stdio/vfscanf.c.
This commit is contained in:
Jeff Johnston 2004-04-23 21:30:04 +00:00
parent c00f971933
commit 27c7566ca4
2 changed files with 58 additions and 30 deletions
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9
newlib/ChangeLog
View File

@ -1,3 +1,12 @@
2004-04-23 Jeff Johnston <jjohnstn@redhat.com>
* libc/machine/powerpc/vfscanf.c (NNZDIGITS): New define.
(__svfscanf_r): In integer conversions, leave out leading zeroes
which are not part of a base prefix.
Keep track of width truncation to fit into buf, not counting left-out
zeroes against width till the truncation has been compensated for.
This is based on Joern's patch of 04/21 for libc/stdio/vfscanf.c.
2004-04-23 Jeff Johnston <jjohnstn@redhat.com>
* libc/include/stdio.h: (_ftell_r, _fseek_r): New prototypes.

79
newlib/libc/machine/powerpc/vfscanf.c
View File

@ -153,9 +153,9 @@ extern _LONG_DOUBLE _strtold _PARAMS((char *s, char **sptr));
#define LONG 0x01 /* l: long or double */
#define LONGDBL 0x02 /* L: long double or long long */
#define SHORT 0x04 /* h: short */
#define SUPPRESS 0x08 /* suppress assignment */
#define POINTER 0x10 /* weird %p pointer (`fake hex') */
#define NOSKIP 0x20 /* do not skip blanks */
#define SUPPRESS 0x10 /* suppress assignment */
#define POINTER 0x20 /* weird %p pointer (`fake hex') */
#define NOSKIP 0x40 /* do not skip blanks */
/*
* The following are used in numeric conversions only:
@ -163,18 +163,19 @@ extern _LONG_DOUBLE _strtold _PARAMS((char *s, char **sptr));
* SIGNOK, NDIGITS, PFXOK, and NZDIGITS are for integral.
*/
#define SIGNOK 0x40 /* +/- is (still) legal */
#define NDIGITS 0x80 /* no digits detected */
#define SIGNOK 0x80 /* +/- is (still) legal */
#define NDIGITS 0x100 /* no digits detected */
#define DPTOK 0x100 /* (float) decimal point is still legal */
#define EXPOK 0x200 /* (float) exponent (e+3, etc) still legal */
#define DPTOK 0x200 /* (float) decimal point is still legal */
#define EXPOK 0x400 /* (float) exponent (e+3, etc) still legal */
#define PFXOK 0x100 /* 0x prefix is (still) legal */
#define NZDIGITS 0x200 /* no zero digits detected */
#define PFXOK 0x200 /* 0x prefix is (still) legal */
#define NZDIGITS 0x400 /* no zero digits detected */
#define NNZDIGITS 0x800 /* no non-zero digits detected */
#define VECTOR 0x400 /* v: vector */
#define FIXEDPOINT 0x800 /* r/R: fixed-point */
#define SIGNED 0x1000 /* r: signed fixed-point */
#define VECTOR 0x2000 /* v: vector */
#define FIXEDPOINT 0x4000 /* r/R: fixed-point */
#define SIGNED 0x8000 /* r: signed fixed-point */
/*
* Conversion types.
@ -798,18 +799,19 @@ __svfscanf_r (rptr, fp, fmt0, ap)
continue;
case CT_INT:
/* scan an integer as if by strtol/strtoul */
unsigned int_width_left = 0;
int_width = width;
#ifdef hardway
if (int_width == 0 || int_width > sizeof (buf) - 1)
int_width = sizeof (buf) - 1;
#else
/* size_t is unsigned, hence this optimisation */
if (--int_width > sizeof (buf) - 2)
int_width = sizeof (buf) - 2;
int_width++;
if (int_width - 1 > sizeof (buf) - 2)
#endif
flags |= SIGNOK | NDIGITS | NZDIGITS;
{
int_width_left = width - (sizeof (buf) - 1);
int_width = sizeof (buf) - 1;
}
flags |= SIGNOK | NDIGITS | NZDIGITS | NNZDIGITS;
for (p = buf; int_width; int_width--)
{
c = *fp->_p;
@ -829,16 +831,25 @@ __svfscanf_r (rptr, fp, fmt0, ap)
* will turn it off if we have scanned any nonzero digits).
*/
case '0':
if (! (flags & NNZDIGITS))
goto ok;
if (base == 0)
{
base = 8;
flags |= PFXOK;
}
if (flags & NZDIGITS)
flags &= ~(SIGNOK | NZDIGITS | NDIGITS);
else
flags &= ~(SIGNOK | PFXOK | NDIGITS);
goto ok;
{
flags &= ~(SIGNOK | NZDIGITS | NDIGITS);
goto ok;
}
flags &= ~(SIGNOK | PFXOK | NDIGITS);
if (int_width_left)
{
int_width_left--;
int_width++;
}
goto skip;
/* 1 through 7 always legal */
case '1':
@ -849,7 +860,7 @@ __svfscanf_r (rptr, fp, fmt0, ap)
case '6':
case '7':
base = basefix[base];
flags &= ~(SIGNOK | PFXOK | NDIGITS);
flags &= ~(SIGNOK | PFXOK | NDIGITS | NNZDIGITS);
goto ok;
/* digits 8 and 9 ok iff decimal or hex */
@ -858,7 +869,7 @@ __svfscanf_r (rptr, fp, fmt0, ap)
base = basefix[base];
if (base <= 8)
break; /* not legal here */
flags &= ~(SIGNOK | PFXOK | NDIGITS);
flags &= ~(SIGNOK | PFXOK | NDIGITS | NNZDIGITS);
goto ok;
/* letters ok iff hex */
@ -877,7 +888,7 @@ __svfscanf_r (rptr, fp, fmt0, ap)
/* no need to fix base here */
if (base <= 10)
break; /* not legal here */
flags &= ~(SIGNOK | PFXOK | NDIGITS);
flags &= ~(SIGNOK | PFXOK | NDIGITS | NNZDIGITS);
goto ok;
/* sign ok only as first character */
@ -912,6 +923,7 @@ __svfscanf_r (rptr, fp, fmt0, ap)
* c is legal: store it and look at the next.
*/
*p++ = c;
skip:
if (--fp->_r > 0)
fp->_p++;
else
@ -1004,16 +1016,18 @@ __svfscanf_r (rptr, fp, fmt0, ap)
long leading_zeroes = 0;
long zeroes, exp_adjust;
char *exp_start = NULL;
int fl_width = width;
unsigned fl_width = width;
unsigned width_left = 0;
#ifdef hardway
if (fl_width == 0 || fl_width > sizeof (buf) - 1)
fl_width = sizeof (buf) - 1;
#else
/* size_t is unsigned, hence this optimisation */
if (--fl_width > sizeof (buf) - 2)
fl_width = sizeof (buf) - 2;
fl_width++;
if (fl_width - 1 > sizeof (buf) - 2)
#endif
{
width_left = fl_width - (sizeof (buf) - 1);
fl_width = sizeof (buf) - 1;
}
flags |= SIGNOK | NDIGITS | DPTOK | EXPOK;
zeroes = 0;
exp_adjust = 0;
@ -1032,6 +1046,11 @@ __svfscanf_r (rptr, fp, fmt0, ap)
{
flags &= ~SIGNOK;
zeroes++;
if (width_left)
{
width_left--;
fl_width++;
}
goto fskip;
}
/* Fall through. */