--- /dev/null
+################################################################################
+##
+## $Revision: 3 $
+## $Author: mhx $
+## $Date: 2008/10/30 19:42:36 +0100 $
+##
+################################################################################
+##
+## Version 3.x, Copyright (C) 2004-2008, Marcus Holland-Moritz.
+## Version 2.x, Copyright (C) 2001, Paul Marquess.
+## Version 1.x, Copyright (C) 1999, Kenneth Albanowski.
+##
+## This program is free software; you can redistribute it and/or
+## modify it under the same terms as Perl itself.
+##
+################################################################################
+
+=provides
+
+__UNDEFINED__
+pv_escape
+pv_pretty
+pv_display
+
+=implementation
+
+__UNDEFINED__ PERL_PV_ESCAPE_QUOTE 0x0001
+__UNDEFINED__ PERL_PV_PRETTY_QUOTE PERL_PV_ESCAPE_QUOTE
+__UNDEFINED__ PERL_PV_PRETTY_ELLIPSES 0x0002
+__UNDEFINED__ PERL_PV_PRETTY_LTGT 0x0004
+__UNDEFINED__ PERL_PV_ESCAPE_FIRSTCHAR 0x0008
+__UNDEFINED__ PERL_PV_ESCAPE_UNI 0x0100
+__UNDEFINED__ PERL_PV_ESCAPE_UNI_DETECT 0x0200
+__UNDEFINED__ PERL_PV_ESCAPE_ALL 0x1000
+__UNDEFINED__ PERL_PV_ESCAPE_NOBACKSLASH 0x2000
+__UNDEFINED__ PERL_PV_ESCAPE_NOCLEAR 0x4000
+__UNDEFINED__ PERL_PV_ESCAPE_RE 0x8000
+__UNDEFINED__ PERL_PV_PRETTY_NOCLEAR PERL_PV_ESCAPE_NOCLEAR
+
+__UNDEFINED__ PERL_PV_PRETTY_DUMP PERL_PV_PRETTY_ELLIPSES|PERL_PV_PRETTY_QUOTE
+__UNDEFINED__ PERL_PV_PRETTY_REGPROP PERL_PV_PRETTY_ELLIPSES|PERL_PV_PRETTY_LTGT|PERL_PV_ESCAPE_RE
+
+/* Hint: pv_escape
+ * Note that unicode functionality is only backported to
+ * those perl versions that support it. For older perl
+ * versions, the implementation will fall back to bytes.
+ */
+
+#ifndef pv_escape
+#if { NEED pv_escape }
+
+char *
+pv_escape(pTHX_ SV *dsv, char const * const str,
+ const STRLEN count, const STRLEN max,
+ STRLEN * const escaped, const U32 flags)
+{
+ const char esc = flags & PERL_PV_ESCAPE_RE ? '%' : '\\';
+ const char dq = flags & PERL_PV_ESCAPE_QUOTE ? '"' : esc;
+ char octbuf[32] = "%123456789ABCDF";
+ STRLEN wrote = 0;
+ STRLEN chsize = 0;
+ STRLEN readsize = 1;
+#if defined(is_utf8_string) && defined(utf8_to_uvchr)
+ bool isuni = flags & PERL_PV_ESCAPE_UNI ? 1 : 0;
+#endif
+ const char *pv = str;
+ const char * const end = pv + count;
+ octbuf[0] = esc;
+
+ if (!(flags & PERL_PV_ESCAPE_NOCLEAR))
+ sv_setpvs(dsv, "");
+
+#if defined(is_utf8_string) && defined(utf8_to_uvchr)
+ if ((flags & PERL_PV_ESCAPE_UNI_DETECT) && is_utf8_string((U8*)pv, count))
+ isuni = 1;
+#endif
+
+ for (; pv < end && (!max || wrote < max) ; pv += readsize) {
+ const UV u =
+#if defined(is_utf8_string) && defined(utf8_to_uvchr)
+ isuni ? utf8_to_uvchr((U8*)pv, &readsize) :
+#endif
+ (U8)*pv;
+ const U8 c = (U8)u & 0xFF;
+
+ if (u > 255 || (flags & PERL_PV_ESCAPE_ALL)) {
+ if (flags & PERL_PV_ESCAPE_FIRSTCHAR)
+ chsize = my_snprintf(octbuf, sizeof octbuf,
+ "%"UVxf, u);
+ else
+ chsize = my_snprintf(octbuf, sizeof octbuf,
+ "%cx{%"UVxf"}", esc, u);
+ } else if (flags & PERL_PV_ESCAPE_NOBACKSLASH) {
+ chsize = 1;
+ } else {
+ if (c == dq || c == esc || !isPRINT(c)) {
+ chsize = 2;
+ switch (c) {
+ case '\\' : /* fallthrough */
+ case '%' : if (c == esc)
+ octbuf[1] = esc;
+ else
+ chsize = 1;
+ break;
+ case '\v' : octbuf[1] = 'v'; break;
+ case '\t' : octbuf[1] = 't'; break;
+ case '\r' : octbuf[1] = 'r'; break;
+ case '\n' : octbuf[1] = 'n'; break;
+ case '\f' : octbuf[1] = 'f'; break;
+ case '"' : if (dq == '"')
+ octbuf[1] = '"';
+ else
+ chsize = 1;
+ break;
+ default: chsize = my_snprintf(octbuf, sizeof octbuf,
+ pv < end && isDIGIT((U8)*(pv+readsize))
+ ? "%c%03o" : "%c%o", esc, c);
+ }
+ } else {
+ chsize = 1;
+ }
+ }
+ if (max && wrote + chsize > max) {
+ break;
+ } else if (chsize > 1) {
+ sv_catpvn(dsv, octbuf, chsize);
+ wrote += chsize;
+ } else {
+ char tmp[2];
+ my_snprintf(tmp, sizeof tmp, "%c", c);
+ sv_catpvn(dsv, tmp, 1);
+ wrote++;
+ }
+ if (flags & PERL_PV_ESCAPE_FIRSTCHAR)
+ break;
+ }
+ if (escaped != NULL)
+ *escaped= pv - str;
+ return SvPVX(dsv);
+}
+
+#endif
+#endif
+
+#ifndef pv_pretty
+#if { NEED pv_pretty }
+
+char *
+pv_pretty(pTHX_ SV *dsv, char const * const str, const STRLEN count,
+ const STRLEN max, char const * const start_color, char const * const end_color,
+ const U32 flags)
+{
+ const U8 dq = (flags & PERL_PV_PRETTY_QUOTE) ? '"' : '%';
+ STRLEN escaped;
+
+ if (!(flags & PERL_PV_PRETTY_NOCLEAR))
+ sv_setpvs(dsv, "");
+
+ if (dq == '"')
+ sv_catpvs(dsv, "\"");
+ else if (flags & PERL_PV_PRETTY_LTGT)
+ sv_catpvs(dsv, "<");
+
+ if (start_color != NULL)
+ sv_catpv(dsv, D_PPP_CONSTPV_ARG(start_color));
+
+ pv_escape(dsv, str, count, max, &escaped, flags | PERL_PV_ESCAPE_NOCLEAR);
+
+ if (end_color != NULL)
+ sv_catpv(dsv, D_PPP_CONSTPV_ARG(end_color));
+
+ if (dq == '"')
+ sv_catpvs(dsv, "\"");
+ else if (flags & PERL_PV_PRETTY_LTGT)
+ sv_catpvs(dsv, ">");
+
+ if ((flags & PERL_PV_PRETTY_ELLIPSES) && escaped < count)
+ sv_catpvs(dsv, "...");
+
+ return SvPVX(dsv);
+}
+
+#endif
+#endif
+
+#ifndef pv_display
+#if { NEED pv_display }
+
+char *
+pv_display(pTHX_ SV *dsv, const char *pv, STRLEN cur, STRLEN len, STRLEN pvlim)
+{
+ pv_pretty(dsv, pv, cur, pvlim, NULL, NULL, PERL_PV_PRETTY_DUMP);
+ if (len > cur && pv[cur] == '\0')
+ sv_catpvs(dsv, "\\0");
+ return SvPVX(dsv);
+}
+
+#endif
+#endif
+
+=xsinit
+
+#define NEED_pv_escape
+#define NEED_pv_pretty
+#define NEED_pv_display
+
+=xsubs
+
+void
+pv_escape_can_unicode()
+ PPCODE:
+#if defined(is_utf8_string) && defined(utf8_to_uvchr)
+ XSRETURN_YES;
+#else
+ XSRETURN_NO;
+#endif
+
+void
+pv_pretty()
+ PREINIT:
+ char *rv;
+ PPCODE:
+ EXTEND(SP, 8);
+ ST(0) = sv_newmortal();
+ rv = pv_pretty(ST(0), "foobarbaz",
+ 9, 40, NULL, NULL, 0);
+ ST(1) = sv_2mortal(newSVpv(rv, 0));
+ ST(2) = sv_newmortal();
+ rv = pv_pretty(ST(2), "pv_p\retty\n",
+ 10, 40, "left", "right", PERL_PV_PRETTY_LTGT);
+ ST(3) = sv_2mortal(newSVpv(rv, 0));
+ ST(4) = sv_newmortal();
+ rv = pv_pretty(ST(4), "N\303\275 Batter\303\255",
+ 16, 20, NULL, NULL, PERL_PV_ESCAPE_UNI_DETECT);
+ ST(5) = sv_2mortal(newSVpv(rv, 0));
+ ST(6) = sv_newmortal();
+ rv = pv_pretty(ST(6), "\303\201g\303\246tis Byrjun",
+ 16, 20, NULL, NULL, PERL_PV_ESCAPE_UNI_DETECT|PERL_PV_PRETTY_ELLIPSES);
+ ST(7) = sv_2mortal(newSVpv(rv, 0));
+ XSRETURN(8);
+
+void
+pv_display()
+ PREINIT:
+ char *rv;
+ PPCODE:
+ EXTEND(SP, 4);
+ ST(0) = sv_newmortal();
+ rv = pv_display(ST(0), "foob\0rbaz", 9, 10, 20);
+ ST(1) = sv_2mortal(newSVpv(rv, 0));
+ ST(2) = sv_newmortal();
+ rv = pv_display(ST(2), "pv_display", 10, 11, 5);
+ ST(3) = sv_2mortal(newSVpv(rv, 0));
+ XSRETURN(4);
+
+=tests plan => 13
+
+my $uni = &Devel::PPPort::pv_escape_can_unicode();
+
+# sanity check
+ok($uni ? $] >= 5.006 : $] < 5.008);
+
+my @r;
+
+@r = &Devel::PPPort::pv_pretty();
+ok($r[0], $r[1]);
+ok($r[0], "foobarbaz");
+ok($r[2], $r[3]);
+ok($r[2], '<leftpv_p\retty\nright>');
+ok($r[4], $r[5]);
+ok($r[4], $uni ? 'N\375 Batter\355\0' : 'N\303\275 Batter\303');
+ok($r[6], $r[7]);
+ok($r[6], $uni ? '\\301g\\346tis Byrjun...' : '\303\201g\303\246tis...');
+
+@r = &Devel::PPPort::pv_display();
+ok($r[0], $r[1]);
+ok($r[0], '"foob\0rbaz"\0');
+ok($r[2], $r[3]);
+ok($r[2] eq '"pv_di"...\0' ||
+ $r[2] eq '"pv_d"...\0'); # some perl implementations are broken... :(
+
projects / p5sagit/p5-mst-13.2.git / commitdiff