1
0
mirror of https://git.FreeBSD.org/src.git synced 2024-12-25 11:37:56 +00:00

Handle numbers larger than QUAD_MAX for unsigned conversions correctly.

Exit with nonzero status if a conversion failed.
Play nice if used as a shell builtin (currently disabled).

Submitted by:	bde (partially)
Approved by:	mike
This commit is contained in:
Tim J. Robbins 2002-04-25 01:10:11 +00:00
parent 04a3d10ee5
commit bacab7d655
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=95409

View File

@ -71,7 +71,7 @@ static const char rcsid[] =
#include <locale.h>
#endif
#define PF(f, func) { \
#define PF(f, func) do { \
char *b = NULL; \
if (fieldwidth) \
if (precision) \
@ -86,16 +86,17 @@ static const char rcsid[] =
(void)fputs(b, stdout); \
free(b); \
} \
}
} while (0)
static int asciicode(void);
static int escape(char *);
static int getchr(void);
static double getdouble(void);
static int getdouble(double *);
static int getint(int *);
static int getquad(quad_t *);
static const char *getstr(void);
static char *mklong(char *, int);
static int getquads(quad_t *, u_quad_t *, int);
static const char
*getstr(void);
static char *mkquad(char *, int);
static void usage(void);
static char **gargv;
@ -110,7 +111,7 @@ main(argc, argv)
char *argv[];
{
static const char *skip1, *skip2;
int ch, chopped, end, fieldwidth, precision;
int ch, chopped, end, fieldwidth, precision, rval;
char convch, nextch, *format, *fmt, *start;
#ifndef BUILTIN
@ -143,6 +144,7 @@ main(argc, argv)
skip2 = "0123456789";
chopped = escape(fmt = format = *argv); /* backslash interpretation */
rval = 0;
gargv = ++argv;
for (;;) {
end = 0;
@ -152,7 +154,7 @@ next: for (start = fmt;; ++fmt) {
/* avoid infinite loop */
if (chopped) {
(void)printf("%s", start);
return (0);
return (rval);
}
if (end == 1) {
warnx1("missing format character",
@ -163,7 +165,7 @@ next: for (start = fmt;; ++fmt) {
if (fmt > start)
(void)printf("%s", start);
if (!*gargv)
return (0);
return (rval);
fmt = format;
goto next;
}
@ -217,15 +219,26 @@ next: for (start = fmt;; ++fmt) {
char *p;
int getout;
if ((p = strdup(getstr())) == NULL)
err(1, NULL);
#ifdef SHELL
p = savestr(getstr());
#else
p = strdup(getstr());
#endif
if (p == NULL) {
warnx2("%s", strerror(ENOMEM), NULL);
return (1);
}
getout = escape(p);
*(fmt - 1) = 's';
PF(start, p)
PF(start, p);
*(fmt - 1) = 'b';
#ifdef SHELL
ckfree(p);
#else
free(p);
#endif
if (getout)
return (0);
return (rval);
break;
}
case 'c': {
@ -243,19 +256,27 @@ next: for (start = fmt;; ++fmt) {
break;
}
case 'd': case 'i': case 'o': case 'u': case 'x': case 'X': {
quad_t p;
char *f;
quad_t val;
u_quad_t uval;
int signedconv;
if ((f = mklong(start, convch)) != NULL &&
!getquad(&p)) {
PF(f, p);
}
signedconv = (convch == 'd' || convch == 'i');
if ((f = mkquad(start, convch)) == NULL)
return (1);
if (getquads(&val, &uval, signedconv))
rval = 1;
if (signedconv)
PF(f, val);
else
PF(f, uval);
break;
}
case 'e': case 'E': case 'f': case 'g': case 'G': {
double p;
p = getdouble();
if (getdouble(&p))
rval = 1;
PF(start, p);
break;
}
@ -269,14 +290,14 @@ next: for (start = fmt;; ++fmt) {
}
static char *
mklong(str, ch)
mkquad(str, ch)
char *str;
int ch;
{
static char *copy;
static size_t copy_size;
size_t len, newlen;
char *newcopy;
size_t len, newlen;
len = strlen(str) + 2;
if (len > copy_size) {
@ -286,7 +307,10 @@ mklong(str, ch)
#else
if ((newcopy = realloc(copy, newlen)) == NULL)
#endif
{
warnx2("%s", strerror(ENOMEM), NULL);
return (NULL);
}
copy = newcopy;
copy_size = newlen;
}
@ -384,69 +408,91 @@ getint(ip)
int *ip;
{
quad_t val;
u_quad_t uval;
int rval;
if (getquad(&val))
if (getquads(&val, &uval, 1))
return (1);
if (val < INT_MIN || val > INT_MAX)
rval = 0;
if (val < INT_MIN || val > INT_MAX) {
warnx3("%s: %s", *gargv, strerror(ERANGE));
rval = 1;
}
*ip = (int)val;
return (0);
return (rval);
}
static int
getquad(lp)
quad_t *lp;
getquads(qp, uqp, signedconv)
quad_t *qp;
u_quad_t *uqp;
int signedconv;
{
quad_t val;
char *ep;
int rval;
if (!*gargv) {
*lp = 0;
*qp = 0;
return (0);
}
if (**gargv == '"' || **gargv == '\'') {
*lp = (quad_t)asciicode();
if (signedconv)
*qp = asciicode();
else
*uqp = asciicode();
return (0);
}
rval = 0;
errno = 0;
val = strtoq(*gargv, &ep, 0);
if (ep == *gargv)
if (signedconv)
*qp = strtoq(*gargv, &ep, 0);
else
*uqp = strtouq(*gargv, &ep, 0);
if (ep == *gargv) {
warnx2("%s: expected numeric value", *gargv, NULL);
else if (*ep != '\0')
rval = 1;
}
else if (*ep != '\0') {
warnx2("%s: not completely converted", *gargv, NULL);
if (errno == ERANGE)
rval = 1;
}
if (errno == ERANGE) {
warnx3("%s: %s", *gargv, strerror(ERANGE));
*lp = val;
rval = 1;
}
++gargv;
return (0);
return (rval);
}
static double
getdouble()
static int
getdouble(dp)
double *dp;
{
double val;
char *ep;
int rval;
if (!*gargv)
return ((double)0);
return (0);
if (**gargv == '"' || **gargv == '\'') {
val = (double)asciicode();
return (val);
*dp = asciicode();
return (0);
}
rval = 1;
errno = 0;
val = strtod(*gargv, &ep);
if (ep == *gargv)
*dp = strtod(*gargv, &ep);
if (ep == *gargv) {
warnx2("%s: expected numeric value", *gargv, NULL);
else if (*ep != '\0')
rval = 1;
} else if (*ep != '\0') {
warnx2("%s: not completely converted", *gargv, NULL);
if (errno == ERANGE)
rval = 1;
}
if (errno == ERANGE) {
warnx3("%s: %s", *gargv, strerror(ERANGE));
rval = 1;
}
++gargv;
return (val);
return (rval);
}
static int