1 files changed, 74 insertions, 0 deletions
diff --git a/goldfishterm/simple.cc b/goldfishterm/simple.cc
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+++ b/goldfishterm/simple.cc
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+// Copyright 2021 Benjamin Barenblat
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not
+// use this file except in compliance with the License. You may obtain a copy of
+// the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations under
+// the License.
+
+#include "goldfishterm/simple.h"
+
+#include <stdlib.h>
+#include <termios.h>
+#include <unistd.h>
+
+#include <stdexcept>
+#include <vector>
+
+#include "goldfishterm/internal/emit.h"
+#include "goldfishterm/terminfo.h"
+#include "third_party/abseil/absl/strings/string_view.h"
+
+namespace goldfishterm {
+
+namespace {
+
+using ::goldfishterm_internal::InterpretStringCapability;
+using ::goldfishterm_internal::InterpretStringCapabilityInput;
+
+termios StdoutTermios() {
+  termios tty;
+  if (tcgetattr(STDOUT_FILENO, &tty) < 0) {
+    throw std::system_error(errno, std::system_category(), "tcgetattr");
+  }
+  return tty;
+}
+
+absl::string_view TerminalNameFromEnvironment() {
+  const char* name = getenv("TERM");
+  if (name == nullptr) {
+    throw std::runtime_error("TERM unset");
+  }
+  return name;
+}
+
+}  // namespace
+
+SimpleTerminalOutput::SimpleTerminalOutput()
+    : SimpleTerminalOutput(StdoutTermios()) {}
+
+SimpleTerminalOutput::SimpleTerminalOutput(const termios& tty)
+    : terminfo_(
+          TerminfoEntry::FromSystemDatabase(TerminalNameFromEnvironment())) {
+  baud_ = cfgetospeed(&tty);
+}
+
+void SimpleTerminalOutput::Emit(
+    StringCapability cap,
+    std::vector<goldfishterm_internal::StringCapabilityParameter> parameters) {
+  goldfishterm_internal::Emit(
+      InterpretStringCapability(
+          InterpretStringCapabilityInput(terminfo_, terminfo_.get(cap).value(),
+                                         std::move(parameters), /*baud=*/baud_,
+                                         /*lines_affected=*/1))
+          .terms,
+      std::cout);
+}
+
+}  // namespace goldfishterm