Add locale_convert. Reimplement raw_convert without stringstream.

1 files changed, 152 insertions, 0 deletions

diff --git a/src/locale_convert.cc b/src/locale_convert.cc
new file mode 100644
index 00000000..549a1041
--- /dev/null
+++ b/src/locale_convert.cc
@@ -0,0 +1,152 @@
+/*
+    Copyright (C) 2016 Carl Hetherington <cth@carlh.net>
+
+    This file is part of libdcp.
+
+    libdcp 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 2 of the License, or
+    (at your option) any later version.
+
+    libdcp 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 libdcp.  If not, see <http://www.gnu.org/licenses/>.
+
+    In addition, as a special exception, the copyright holders give
+    permission to link the code of portions of this program with the
+    OpenSSL library under certain conditions as described in each
+    individual source file, and distribute linked combinations
+    including the two.
+
+    You must obey the GNU General Public License in all respects
+    for all of the code used other than OpenSSL.  If you modify
+    file(s) with this exception, you may extend this exception to your
+    version of the file(s), but you are not obligated to do so.  If you
+    do not wish to do so, delete this exception statement from your
+    version.  If you delete this exception statement from all source
+    files in the program, then also delete it here.
+*/
+
+#include "locale_convert.h"
+#include <string>
+#include <inttypes.h>
+
+using std::string;
+
+template<>
+string
+dcp::locale_convert (int x, int, bool)
+{
+	char buffer[64];
+	snprintf (buffer, sizeof(buffer), "%d", x);
+	return buffer;
+}
+
+template<>
+string
+dcp::locale_convert (int64_t x, int, bool)
+{
+	char buffer[64];
+	snprintf (buffer, sizeof(buffer), "%" PRId64, x);
+	return buffer;
+}
+
+template<>
+string
+dcp::locale_convert (uint64_t x, int, bool)
+{
+	char buffer[64];
+	snprintf (buffer, sizeof(buffer), "%" PRIu64, x);
+	return buffer;
+}
+
+template<>
+string
+dcp::locale_convert (float x, int precision, bool fixed)
+{
+	char format[64];
+	if (fixed) {
+		snprintf (format, sizeof(format), "%%.%df", precision);
+	} else {
+		snprintf (format, sizeof(format), "%%.%dg", precision);
+	}
+	char buffer[64];
+	snprintf (buffer, sizeof(buffer), format, x);
+	return buffer;
+}
+
+template<>
+string
+dcp::locale_convert (double x, int precision, bool fixed)
+{
+	char format[64];
+	if (fixed) {
+		snprintf (format, sizeof(format), "%%.%df", precision);
+	} else {
+		snprintf (format, sizeof(format), "%%.%dg", precision);
+	}
+	char buffer[64];
+	snprintf (buffer, sizeof(buffer), format, x);
+	return buffer;
+}
+
+template<>
+string
+dcp::locale_convert (string x, int, bool)
+{
+	return x;
+}
+
+template<>
+string
+dcp::locale_convert (char* x, int, bool)
+{
+	return x;
+}
+
+template<>
+string
+dcp::locale_convert (char const * x, int, bool)
+{
+	return x;
+}
+
+template<>
+int
+dcp::locale_convert (string x, int, bool)
+{
+	int y = 0;
+	sscanf (x.c_str(), "%d", &y);
+	return y;
+}
+
+template<>
+int64_t
+dcp::locale_convert (string x, int, bool)
+{
+	int64_t y = 0;
+	sscanf (x.c_str(), "%" PRId64, &y);
+	return y;
+}
+
+template<>
+float
+dcp::locale_convert (string x, int, bool)
+{
+	float y = 0;
+	sscanf (x.c_str(), "%f", &y);
+	return y;
+}
+
+template<>
+double
+dcp::locale_convert (string x, int, bool)
+{
+	double y = 0;
+	sscanf (x.c_str(), "%lf", &y);
+	return y;
+}