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authorBen Longbons <b.r.longbons@gmail.com>2014-02-08 15:09:25 -0800
committerBen Longbons <b.r.longbons@gmail.com>2014-02-08 16:18:22 -0800
commit730e5dde39333cb2f63c72a7d7152bee5c4dbb05 (patch)
tree510ef3e0ad46ecf1f2bee1fa42f26e6377b51686 /src/strings/rstring.cpp
parent7a15a3efe85837d52d950cc9f895eadcc9eb6be1 (diff)
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Implement AString
Diffstat (limited to 'src/strings/rstring.cpp')
-rw-r--r--src/strings/rstring.cpp164
1 files changed, 164 insertions, 0 deletions
diff --git a/src/strings/rstring.cpp b/src/strings/rstring.cpp
new file mode 100644
index 0000000..eb9d88a
--- /dev/null
+++ b/src/strings/rstring.cpp
@@ -0,0 +1,164 @@
+#include "rstring.hpp"
+// strings/rstring.cpp - Functions for rstring.hpp
+//
+// Copyright © 2013-2014 Ben Longbons <b.r.longbons@gmail.com>
+//
+// This file is part of The Mana World (Athena server)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+#include "mstring.hpp"
+#include "tstring.hpp"
+#include "sstring.hpp"
+#include "zstring.hpp"
+#include "xstring.hpp"
+#include "vstring.hpp"
+
+namespace strings
+{
+ static_assert(sizeof(RString) == sizeof(const char *), "RString");
+
+ uint8_t RString::empty_string_rep[sizeof(Rep) + 1];
+
+ RString::RString()
+ : owned(reinterpret_cast<Rep *>(&empty_string_rep))
+ {
+ owned->count++;
+ }
+
+ RString::RString(const RString& r)
+ : owned(r.owned)
+ {
+ owned->count++;
+ }
+ RString::RString(RString&& r)
+ : owned(reinterpret_cast<Rep *>(&empty_string_rep))
+ {
+ std::swap(owned, r.owned);
+ r.owned->count++;
+ }
+ RString& RString::operator = (const RString& r)
+ {
+ // order important for self-assign
+ r.owned->count++;
+ // owned can be NULL from ctors
+ // TODO do ctors *properly* (requires gcc 4.7 to stay sane)
+ if (owned && !owned->count--)
+ ::operator delete(owned);
+ owned = r.owned;
+ return *this;
+ }
+ RString& RString::operator = (RString&& r)
+ {
+ std::swap(owned, r.owned);
+ return *this;
+ }
+ RString::RString(AString a)
+ : owned(nullptr)
+ {
+ if (RString *r = const_cast<RString *>(a.base()))
+ {
+ *this = std::move(*r);
+ }
+ else
+ {
+ *this = XPair(a);
+ }
+ }
+ RString::~RString()
+ {
+ if (owned && !owned->count--)
+ ::operator delete(owned);
+ owned = nullptr;
+ }
+
+ RString::RString(const MString& s)
+ : owned(nullptr)
+ {
+ _assign(s.begin(), s.end());
+ }
+
+ RString::RString(XPair p)
+ : owned(nullptr)
+ {
+ _assign(p.begin(), p.end());
+ }
+
+ RString::RString(const TString& t)
+ : owned(nullptr)
+ {
+ *this = XString(t);
+ }
+ RString::RString(const SString& s)
+ : owned(nullptr)
+ {
+ *this = XString(s);
+ }
+ RString::RString(ZString z)
+ : owned(nullptr)
+ {
+ *this = XString(z);
+ }
+ RString::RString(XString x)
+ : owned(nullptr)
+ {
+ const RString *f = x.base();
+ const char *xb = &*x.begin();
+ const char *xe = &*x.end();
+ const char *fb = f ? &*f->begin() : nullptr;
+ const char *fe = f ? &*f->end() : nullptr;
+ if (f && xb == fb && xe == fe)
+ *this = *f;
+ else
+ _assign(x.begin(), x.end());
+ }
+
+ RString::iterator RString::begin() const
+ {
+ return owned->body;
+ }
+ RString::iterator RString::end() const
+ {
+ return owned->body + owned->size;
+ }
+ const RString *RString::base() const
+ {
+ return this;
+ }
+ const char *RString::c_str() const
+ {
+ return &*begin();
+ }
+
+ const char *decay_for_printf(const RString& fs)
+ {
+ return fs.c_str();
+ }
+
+ int do_vprint(RString& out, const char *fmt, va_list ap)
+ {
+ int len;
+ {
+ va_list ap2;
+ va_copy(ap2, ap);
+ len = vsnprintf(nullptr, 0, fmt, ap2);
+ va_end(ap2);
+ }
+ char buffer[len + 1];
+ vsnprintf(buffer, len + 1, fmt, ap);
+
+ out = RString(buffer, buffer + len);
+ return len;
+ }
+} // namespace strings