Adding upstream version 0.11.1.upstream/0.11.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 178 insertions, 0 deletions

diff --git a/src/input_dispatcher.cc b/src/input_dispatcher.cc
new file mode 100644
index 0000000..62c1f40
--- /dev/null
+++ b/src/input_dispatcher.cc
@@ -0,0 +1,178 @@
+/**
+ * Copyright (c) 2018, Timothy Stack
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * * Neither the name of Timothy Stack nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * @file input_dispatcher.cc
+ */
+
+#include <array>
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/time.h>
+
+#include "config.h"
+
+#if defined HAVE_NCURSESW_CURSES_H
+#    include <ncursesw/curses.h>
+#elif defined HAVE_NCURSESW_H
+#    include <ncursesw.h>
+#elif defined HAVE_NCURSES_CURSES_H
+#    include <ncurses/curses.h>
+#elif defined HAVE_NCURSES_H
+#    include <ncurses.h>
+#elif defined HAVE_CURSES_H
+#    include <curses.h>
+#else
+#    error "SysV or X/Open-compatible Curses header file required"
+#endif
+
+#include "base/lnav_log.hh"
+#include "base/time_util.hh"
+#include "input_dispatcher.hh"
+#include "ww898/cp_utf8.hpp"
+
+using namespace ww898;
+
+template<typename A>
+static void
+to_key_seq(A& dst, const char* src)
+{
+    dst[0] = '\0';
+    for (size_t lpc = 0; src[lpc]; lpc++) {
+        snprintf(dst.data() + strlen(dst.data()),
+                 dst.size() - strlen(dst.data()),
+                 "x%02x",
+                 src[lpc] & 0xff);
+    }
+}
+
+void
+input_dispatcher::new_input(const struct timeval& current_time, int ch)
+{
+    nonstd::optional<bool> handled = nonstd::nullopt;
+    std::array<char, 32 * 3 + 1> keyseq{0};
+
+    switch (ch) {
+        case KEY_ESCAPE:
+            this->reset_escape_buffer(ch, current_time);
+            break;
+        case KEY_MOUSE:
+            this->id_mouse_handler();
+            break;
+        default:
+            if (this->id_escape_index > 0) {
+                this->append_to_escape_buffer(ch);
+
+                if (strcmp("\x1b[", this->id_escape_buffer) == 0) {
+                } else if (strcmp("\x1b[<", this->id_escape_buffer) == 0) {
+                    this->id_mouse_handler();
+                    this->id_escape_index = 0;
+                } else if (this->id_escape_expected_size == -1
+                           || this->id_escape_index
+                               == this->id_escape_expected_size)
+                {
+                    to_key_seq(keyseq, this->id_escape_buffer);
+                    switch (this->id_escape_matcher(keyseq.data())) {
+                        case escape_match_t::NONE: {
+                            for (int lpc = 0; this->id_escape_buffer[lpc];
+                                 lpc++) {
+                                handled = this->id_key_handler(
+                                    this->id_escape_buffer[lpc]);
+                            }
+                            this->id_escape_index = 0;
+                            break;
+                        }
+                        case escape_match_t::PARTIAL:
+                            break;
+                        case escape_match_t::FULL:
+                            this->id_escape_handler(keyseq.data());
+                            this->id_escape_index = 0;
+                            break;
+                    }
+                }
+                if (this->id_escape_expected_size != -1
+                    && this->id_escape_index == this->id_escape_expected_size)
+                {
+                    this->id_escape_index = 0;
+                }
+            } else {
+                auto seq_size = utf::utf8::char_size([ch]() {
+                                    return std::make_pair(ch, 16);
+                                }).unwrapOr(size_t{1});
+
+                if (seq_size == 1) {
+                    snprintf(keyseq.data(), keyseq.size(), "x%02x", ch & 0xff);
+                    handled = this->id_key_handler(ch);
+                } else {
+                    this->reset_escape_buffer(ch, current_time, seq_size);
+                }
+            }
+            break;
+    }
+
+    if (handled && !handled.value()) {
+        this->id_unhandled_handler(keyseq.data());
+    }
+}
+
+void
+input_dispatcher::poll(const struct timeval& current_time)
+{
+    if (this->id_escape_index == 1) {
+        static const struct timeval escape_threshold = {0, 10000};
+        struct timeval diff;
+
+        timersub(&current_time, &this->id_escape_start_time, &diff);
+        if (escape_threshold < diff) {
+            this->id_key_handler(KEY_CTRL_RBRACKET);
+            this->id_escape_index = 0;
+        }
+    }
+}
+
+void
+input_dispatcher::reset_escape_buffer(int ch,
+                                      const timeval& current_time,
+                                      ssize_t expected_size)
+{
+    this->id_escape_index = 0;
+    this->append_to_escape_buffer(ch);
+    this->id_escape_expected_size = expected_size;
+    this->id_escape_start_time = current_time;
+}
+
+void
+input_dispatcher::append_to_escape_buffer(int ch)
+{
+    if (this->id_escape_index
+        < static_cast<ssize_t>(sizeof(this->id_escape_buffer) - 1))
+    {
+        this->id_escape_buffer[this->id_escape_index++] = static_cast<char>(ch);
+        this->id_escape_buffer[this->id_escape_index] = '\0';
+    }
+}