git-svn-id: svn://db.shs.com.ru/pip@632 12ceb7fc-bf1f-11e4-8940-5bc7170c53b5

src_main/io_devices/piiostring.cpp

@@ -0,0 +1,102 @@
+/*
+    PIP - Platform Independent Primitives
+    PIIODevice wrapper around PIString
+    Copyright (C) 2018  Ivan Pelipenko peri4ko@yandex.ru
+
+    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 "piiostring.h"
+
+
+/*! \class PIIOString
+ * \brief PIIODevice wrapper around PIString
+ * 
+ * \section  PIIOString_sec0 Synopsis
+ * This class allow you to use PIString as PIIODevice and pass it to, e.g. PIConfig
+ */
+
+//REGISTER_DEVICE(PIIOString);
+
+
+PIIOString::PIIOString(PIString * string, PIIODevice::DeviceMode mode) {
+	open(string, mode);
+}
+
+
+PIIOString::PIIOString(const PIString & string) {
+	open(string);
+}
+
+
+bool PIIOString::open(PIString * string, PIIODevice::DeviceMode mode) {
+	str = string;
+	return PIIODevice::open(mode);
+}
+
+
+bool PIIOString::open(const PIString & string) {
+	str = const_cast<PIString*>(&string);
+	return PIIODevice::open(PIIODevice::ReadOnly);
+}
+
+
+PIString PIIOString::readLine() {
+	if (!canRead() || !str) return PIString();
+	int np = pos;
+	while (++np < str->size_s())
+		if ((*str)[np] == '\n')
+			break;
+	PIString ret = str->mid(pos, np - pos);
+	pos = piMini(np + 1, str->size_s());
+	return ret;
+}
+
+
+int PIIOString::readDevice(void * read_to, int max_size) {
+	if (!canRead() || !str) return -1;
+	PIString rs = str->mid(pos, max_size);
+	pos += max_size;
+	if (pos > str->size_s()) pos = str->size_s();
+	int ret = rs.lengthAscii();
+	memcpy(read_to, rs.data(), rs.lengthAscii());
+	return ret;
+}
+
+
+int PIIOString::writeDevice(const void * data, int max_size) {
+	if (!canWrite() || !str) return -1;
+	//piCout << "write" << data;
+	if (pos > str->size_s()) pos = str->size_s();
+	PIString rs = PIString::fromUTF8((const char *)data);
+	if (rs.size_s() > max_size) rs.resize(max_size);
+	str->insert(pos, rs);
+	pos += rs.size_s();
+	return rs.lengthAscii();
+}
+
+
+int PIIOString::writeString(const PIString & string) {
+	if (!canWrite() || !str) return -1;
+	if (pos > str->size_s()) pos = str->size_s();
+	str->insert(pos, string);
+	pos += string.size_s();
+	return string.lengthAscii();
+}
+
+
+bool PIIOString::openDevice() {
+	pos = 0;
+	return (str != 0);
+}