/* util.c
*
* Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2003, by Larry Wall and others
+ * 2000, 2001, 2002, 2003, 2004, by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
=for apidoc croak
This is the XSUB-writer's interface to Perl's C<die> function.
-Normally use this function the same way you use the C C<printf>
-function. See C<warn>.
+Normally call this function the same way you call the C C<printf>
+function. Calling C<croak> returns control directly to Perl,
+sidestepping the normal C order of execution. See C<warn>.
If you want to throw an exception object, assign the object to
C<$@> and then pass C<Nullch> to croak():
/*
=for apidoc warn
-This is the XSUB-writer's interface to Perl's C<warn> function. Use this
-function the same way you use the C C<printf> function. See
-C<croak>.
+This is the XSUB-writer's interface to Perl's C<warn> function. Call this
+function the same way you call the C C<printf> function. See C<croak>.
=cut
*/
* -DWS
*/
-#define HTOV(name,type) \
+#define HTOLE(name,type) \
type \
name (register type n) \
{ \
char c[sizeof(type)]; \
} u; \
register I32 i; \
- register I32 s; \
- for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
+ register I32 s = 0; \
+ for (i = 0; i < sizeof(u.c); i++, s += 8) { \
u.c[i] = (n >> s) & 0xFF; \
} \
return u.value; \
}
-#define VTOH(name,type) \
+#define LETOH(name,type) \
type \
name (register type n) \
{ \
char c[sizeof(type)]; \
} u; \
register I32 i; \
- register I32 s; \
+ register I32 s = 0; \
u.value = n; \
n = 0; \
- for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
- n += (u.c[i] & 0xFF) << s; \
+ for (i = 0; i < sizeof(u.c); i++, s += 8) { \
+ n |= ((type)(u.c[i] & 0xFF)) << s; \
} \
return n; \
}
+/*
+ * Big-endian byte order functions.
+ */
+
+#define HTOBE(name,type) \
+ type \
+ name (register type n) \
+ { \
+ union { \
+ type value; \
+ char c[sizeof(type)]; \
+ } u; \
+ register I32 i; \
+ register I32 s = 8*(sizeof(u.c)-1); \
+ for (i = 0; i < sizeof(u.c); i++, s -= 8) { \
+ u.c[i] = (n >> s) & 0xFF; \
+ } \
+ return u.value; \
+ }
+
+#define BETOH(name,type) \
+ type \
+ name (register type n) \
+ { \
+ union { \
+ type value; \
+ char c[sizeof(type)]; \
+ } u; \
+ register I32 i; \
+ register I32 s = 8*(sizeof(u.c)-1); \
+ u.value = n; \
+ n = 0; \
+ for (i = 0; i < sizeof(u.c); i++, s -= 8) { \
+ n |= ((type)(u.c[i] & 0xFF)) << s; \
+ } \
+ return n; \
+ }
+
+/*
+ * If we just can't do it...
+ */
+
+#define NOT_AVAIL(name,type) \
+ type \
+ name (register type n) \
+ { \
+ Perl_croak_nocontext(#name "() not available"); \
+ return n; /* not reached */ \
+ }
+
+
#if defined(HAS_HTOVS) && !defined(htovs)
-HTOV(htovs,short)
+HTOLE(htovs,short)
#endif
#if defined(HAS_HTOVL) && !defined(htovl)
-HTOV(htovl,long)
+HTOLE(htovl,long)
#endif
#if defined(HAS_VTOHS) && !defined(vtohs)
-VTOH(vtohs,short)
+LETOH(vtohs,short)
#endif
#if defined(HAS_VTOHL) && !defined(vtohl)
-VTOH(vtohl,long)
+LETOH(vtohl,long)
#endif
+#ifdef PERL_NEED_MY_HTOLE16
+# if U16SIZE == 2
+HTOLE(Perl_my_htole16,U16)
+# else
+NOT_AVAIL(Perl_my_htole16,U16)
+# endif
+#endif
+#ifdef PERL_NEED_MY_LETOH16
+# if U16SIZE == 2
+LETOH(Perl_my_letoh16,U16)
+# else
+NOT_AVAIL(Perl_my_letoh16,U16)
+# endif
+#endif
+#ifdef PERL_NEED_MY_HTOBE16
+# if U16SIZE == 2
+HTOBE(Perl_my_htobe16,U16)
+# else
+NOT_AVAIL(Perl_my_htobe16,U16)
+# endif
+#endif
+#ifdef PERL_NEED_MY_BETOH16
+# if U16SIZE == 2
+BETOH(Perl_my_betoh16,U16)
+# else
+NOT_AVAIL(Perl_my_betoh16,U16)
+# endif
+#endif
+
+#ifdef PERL_NEED_MY_HTOLE32
+# if U32SIZE == 4
+HTOLE(Perl_my_htole32,U32)
+# else
+NOT_AVAIL(Perl_my_htole32,U32)
+# endif
+#endif
+#ifdef PERL_NEED_MY_LETOH32
+# if U32SIZE == 4
+LETOH(Perl_my_letoh32,U32)
+# else
+NOT_AVAIL(Perl_my_letoh32,U32)
+# endif
+#endif
+#ifdef PERL_NEED_MY_HTOBE32
+# if U32SIZE == 4
+HTOBE(Perl_my_htobe32,U32)
+# else
+NOT_AVAIL(Perl_my_htobe32,U32)
+# endif
+#endif
+#ifdef PERL_NEED_MY_BETOH32
+# if U32SIZE == 4
+BETOH(Perl_my_betoh32,U32)
+# else
+NOT_AVAIL(Perl_my_betoh32,U32)
+# endif
+#endif
+
+#ifdef PERL_NEED_MY_HTOLE64
+# if U64SIZE == 8
+HTOLE(Perl_my_htole64,U64)
+# else
+NOT_AVAIL(Perl_my_htole64,U64)
+# endif
+#endif
+#ifdef PERL_NEED_MY_LETOH64
+# if U64SIZE == 8
+LETOH(Perl_my_letoh64,U64)
+# else
+NOT_AVAIL(Perl_my_letoh64,U64)
+# endif
+#endif
+#ifdef PERL_NEED_MY_HTOBE64
+# if U64SIZE == 8
+HTOBE(Perl_my_htobe64,U64)
+# else
+NOT_AVAIL(Perl_my_htobe64,U64)
+# endif
+#endif
+#ifdef PERL_NEED_MY_BETOH64
+# if U64SIZE == 8
+BETOH(Perl_my_betoh64,U64)
+# else
+NOT_AVAIL(Perl_my_betoh64,U64)
+# endif
+#endif
+
+#ifdef PERL_NEED_MY_HTOLES
+HTOLE(Perl_my_htoles,short)
+#endif
+#ifdef PERL_NEED_MY_LETOHS
+LETOH(Perl_my_letohs,short)
+#endif
+#ifdef PERL_NEED_MY_HTOBES
+HTOBE(Perl_my_htobes,short)
+#endif
+#ifdef PERL_NEED_MY_BETOHS
+BETOH(Perl_my_betohs,short)
+#endif
+
+#ifdef PERL_NEED_MY_HTOLEI
+HTOLE(Perl_my_htolei,int)
+#endif
+#ifdef PERL_NEED_MY_LETOHI
+LETOH(Perl_my_letohi,int)
+#endif
+#ifdef PERL_NEED_MY_HTOBEI
+HTOBE(Perl_my_htobei,int)
+#endif
+#ifdef PERL_NEED_MY_BETOHI
+BETOH(Perl_my_betohi,int)
+#endif
+
+#ifdef PERL_NEED_MY_HTOLEL
+HTOLE(Perl_my_htolel,long)
+#endif
+#ifdef PERL_NEED_MY_LETOHL
+LETOH(Perl_my_letohl,long)
+#endif
+#ifdef PERL_NEED_MY_HTOBEL
+HTOBE(Perl_my_htobel,long)
+#endif
+#ifdef PERL_NEED_MY_BETOHL
+BETOH(Perl_my_betohl,long)
+#endif
+
+void
+Perl_my_swabn(void *ptr, int n)
+{
+ register char *s = (char *)ptr;
+ register char *e = s + (n-1);
+ register char tc;
+
+ for (n /= 2; n > 0; s++, e--, n--) {
+ tc = *s;
+ *s = *e;
+ *e = tc;
+ }
+}
+
PerlIO *
Perl_my_popen_list(pTHX_ char *mode, int n, SV **args)
{
* point of a version originally created with a bare
* floating point number, i.e. not quoted in any way
*/
- if ( !qv && s > start+1 && saw_period == 1 && !saw_under ) {
- mult = 100;
+ if ( !qv && s > start+1 && saw_period == 1 ) {
+ mult *= 100;
while ( s < end ) {
orev = rev;
rev += (*s - '0') * mult;
break;
}
while ( isDIGIT(*pos) ) {
- if ( !saw_under && saw_period == 1 && pos-s == 3 )
+ if ( saw_period == 1 && pos-s == 3 )
break;
pos++;
}
}
}
+ if ( qv ) { /* quoted versions always become full version objects */
+ I32 len = av_len((AV *)sv);
+ /* This for loop appears to trigger a compiler bug on OS X, as it
+ loops infinitely. Yes, len is negative. No, it makes no sense.
+ Compiler in question is:
+ gcc version 3.3 20030304 (Apple Computer, Inc. build 1640)
+ for ( len = 2 - len; len > 0; len-- )
+ av_push((AV *)sv, newSViv(0));
+ */
+ len = 2 - len;
+ while (len-- > 0)
+ av_push((AV *)sv, newSViv(0));
+ }
return s;
}
return sv;
}
digit = SvIVX(*av_fetch((AV *)vs, 0, 0));
- Perl_sv_setpvf(aTHX_ sv,"%d.", PERL_ABS(digit));
- for ( i = 1 ; i <= len ; i++ )
+ Perl_sv_setpvf(aTHX_ sv,"%d.", (int)PERL_ABS(digit));
+ for ( i = 1 ; i < len ; i++ )
{
digit = SvIVX(*av_fetch((AV *)vs, i, 0));
- Perl_sv_catpvf(aTHX_ sv,"%03d", PERL_ABS(digit));
+ Perl_sv_catpvf(aTHX_ sv,"%03d", (int)PERL_ABS(digit));
}
- if ( len == 0 )
+
+ if ( len > 0 )
+ {
+ digit = SvIVX(*av_fetch((AV *)vs, len, 0));
+
+ /* Don't display any additional trailing zeros */
+ if ( (int)PERL_ABS(digit) != 0 || len == 1 )
+ {
+ Perl_sv_catpvf(aTHX_ sv,"%03d", (int)PERL_ABS(digit));
+ }
+ }
+ else /* len == 0 */
+ {
Perl_sv_catpv(aTHX_ sv,"000");
- sv_setnv(sv, SvNV(sv));
+ }
return sv;
}
/*
-=for apidoc vstringify
+=for apidoc vnormal
Accepts a version object and returns the normalized string
representation. Call like:
- sv = vstringify(rv);
+ sv = vnormal(rv);
NOTE: you can pass either the object directly or the SV
contained within the RV.
*/
SV *
-Perl_vstringify(pTHX_ SV *vs)
+Perl_vnormal(pTHX_ SV *vs)
{
I32 i, len, digit;
SV *sv = newSV(0);
}
/*
+=for apidoc vstringify
+
+In order to maintain maximum compatibility with earlier versions
+of Perl, this function will return either the floating point
+notation or the multiple dotted notation, depending on whether
+the original version contained 1 or more dots, respectively
+
+=cut
+*/
+
+SV *
+Perl_vstringify(pTHX_ SV *vs)
+{
+ I32 len;
+ if ( SvROK(vs) )
+ vs = SvRV(vs);
+ len = av_len((AV *)vs);
+
+ if ( len < 2 )
+ return vnumify(vs);
+ else
+ return vnormal(vs);
+}
+
+/*
=for apidoc vcmp
Version object aware cmp. Both operands must already have been
https://perl5.git.perl.org / perl5.git / blobdiff