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[ape] add missing conversion flags for scanf

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We're missing type flags for:

	hh: char
	ll: vlong
	z:  size_t
	t:  ptrdiff_t
	j:  intmax_t

The lack of '%lld' was causing us to fail when parsing
timezone files. This brings us in line with the specifiers
in the C99 standard, section 7.19.6.2p11
This commit is contained in:
Ori Bernstein 2020-05-12 10:48:33 -07:00
parent 27fc79b04b
commit 73f38fc546
3 changed files with 33 additions and 5 deletions
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2
sys/include/ape/inttypes.h
View file

@ -27,4 +27,6 @@
#define PRIu32 "u"
#define PRIu64 "llu"
extern intmax_t strtoimax(const char *, char **, int);
#endif

7
sys/src/ape/lib/ap/gen/strtoll.c
View file

@ -1,4 +1,5 @@
#include <stdlib.h>
#include <stdint.h>
#include <limits.h>
#include <errno.h>
@ -101,3 +102,9 @@ Return:
return -n;
return n;
}
intmax_t
strtoimax(char *nptr, char **endptr, int base)
{
return strtoll(nptr, endptr, base);
}

23
sys/src/ape/lib/ap/stdio/vfscanf.c
View file

@ -96,7 +96,16 @@ int vfscanf(FILE *f, const char *s, va_list args)
}
else
width=-1;
type=*fmtp=='h' || *fmtp=='l' || *fmtp=='L'?*fmtp++:'n';
type = 'n';
if(*fmtp=='h' || *fmtp=='l' || *fmtp=='L' || *fmtp=='j' || *fmtp=='z' || *fmtp=='t')
type = *fmtp++;
if(type == 'l' && *fmtp == 'l'){
type = 'V';
fmtp++;
}else if(type == 'h' && *fmtp == 'h'){
type = 'H';
fmtp++;
}
if(!icvt[*fmtp]) goto NonSpecial;
if(!(*icvt[*fmtp])(f, &args, store, width, type))
return ncvt?ncvt:EOF;
@ -137,7 +146,7 @@ icvt_n(FILE *, va_list *args, int store, int, int type)
static int
icvt_fixed(FILE *f, va_list *args,
int store, int width, int type, int unsgned, int base){
unsigned long int num=0;
unsigned long long num=0;
int sign=1, ndig=0, dig;
int c;
do
@ -194,18 +203,28 @@ Done:
switch(unsgned){
case SIGNED:
switch(type){
case 'H': *va_arg(*args, char *)=num*sign; break;
case 'h': *va_arg(*args, short *)=num*sign; break;
case 'n': *va_arg(*args, int *)=num*sign; break;
case 'l':
case 'L': *va_arg(*args, long *)=num*sign; break;
case 'j':
case 'V': *va_arg(*args, long long*)=num*sign; break;
case 'z': *va_arg(*args, ssize_t*)=num*sign; break;
case 't': *va_arg(*args, ptrdiff_t*)=num*sign; break;
}
break;
case UNSIGNED:
switch(type){
case 'H': *va_arg(*args, unsigned char *)=num*sign; break;
case 'h': *va_arg(*args, unsigned short *)=num*sign; break;
case 'n': *va_arg(*args, unsigned int *)=num*sign; break;
case 'l':
case 'L': *va_arg(*args, unsigned long *)=num*sign; break;
case 'j':
case 'V': *va_arg(*args, unsigned long long *)=num*sign; break;
case 'z': *va_arg(*args, size_t*)=num*sign; break;
case 't': *va_arg(*args, ptrdiff_t*)=num*sign; break;
}
break;
case POINTER: