add circuitpython code

4 files changed, 280 insertions, 0 deletions

diff --git a/circuitpython/shared-module/terminalio/Terminal.c b/circuitpython/shared-module/terminalio/Terminal.c
new file mode 100644
index 0000000..fc33533
--- /dev/null
+++ b/circuitpython/shared-module/terminalio/Terminal.c
@@ -0,0 +1,177 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "shared-module/terminalio/Terminal.h"
+
+#include "shared-module/fontio/BuiltinFont.h"
+#include "shared-bindings/displayio/TileGrid.h"
+#include "shared-bindings/terminalio/Terminal.h"
+
+void common_hal_terminalio_terminal_construct(terminalio_terminal_obj_t *self, displayio_tilegrid_t *tilegrid, const fontio_builtinfont_t *font) {
+    self->cursor_x = 0;
+    self->cursor_y = 0;
+    self->font = font;
+    self->tilegrid = tilegrid;
+    self->first_row = 0;
+    for (uint16_t x = 0; x < self->tilegrid->width_in_tiles; x++) {
+        for (uint16_t y = 0; y < self->tilegrid->height_in_tiles; y++) {
+            common_hal_displayio_tilegrid_set_tile(self->tilegrid, x, y, 0);
+        }
+    }
+
+    common_hal_displayio_tilegrid_set_top_left(self->tilegrid, 0, 1);
+}
+
+size_t common_hal_terminalio_terminal_write(terminalio_terminal_obj_t *self, const byte *data, size_t len, int *errcode) {
+    // Make sure the terminal is initialized before we do anything with it.
+    if (self->tilegrid == NULL) {
+        return len;
+    }
+    const byte *i = data;
+    uint16_t start_y = self->cursor_y;
+    while (i < data + len) {
+        unichar c = utf8_get_char(i);
+        i = utf8_next_char(i);
+        // Always handle ASCII.
+        if (c < 128) {
+            if (c >= 0x20 && c <= 0x7e) {
+                uint8_t tile_index = fontio_builtinfont_get_glyph_index(self->font, c);
+                common_hal_displayio_tilegrid_set_tile(self->tilegrid, self->cursor_x, self->cursor_y, tile_index);
+                self->cursor_x++;
+            } else if (c == '\r') {
+                self->cursor_x = 0;
+            } else if (c == '\n') {
+                self->cursor_y++;
+                // Commands below are used by MicroPython in the REPL
+            } else if (c == '\b') {
+                if (self->cursor_x > 0) {
+                    self->cursor_x--;
+                }
+            } else if (c == 0x1b) {
+                if (i[0] == '[') {
+                    if (i[1] == 'K') {
+                        // Clear the rest of the line.
+                        for (uint16_t j = self->cursor_x; j < self->tilegrid->width_in_tiles; j++) {
+                            common_hal_displayio_tilegrid_set_tile(self->tilegrid, j, self->cursor_y, 0);
+                        }
+                        i += 2;
+                    } else {
+                        // Handle commands of the form \x1b[####D
+                        uint16_t n = 0;
+                        uint8_t j = 1;
+                        for (; j < 6; j++) {
+                            if ('0' <= i[j] && i[j] <= '9') {
+                                n = n * 10 + (i[j] - '0');
+                            } else {
+                                c = i[j];
+                                break;
+                            }
+                        }
+                        if (c == 'D') {
+                            if (n > self->cursor_x) {
+                                self->cursor_x = 0;
+                            } else {
+                                self->cursor_x -= n;
+                            }
+                        }
+                        if (c == 'J') {
+                            if (n == 2) {
+                                common_hal_displayio_tilegrid_set_top_left(self->tilegrid, 0, 0);
+                                self->cursor_x = self->cursor_y = start_y = 0;
+                                n = 0;
+                                for (uint16_t x = 0; x < self->tilegrid->width_in_tiles; x++) {
+                                    for (uint16_t y = 0; y < self->tilegrid->height_in_tiles; y++) {
+                                        common_hal_displayio_tilegrid_set_tile(self->tilegrid, x, y, 0);
+                                    }
+                                }
+                            }
+                        }
+                        if (c == ';') {
+                            uint16_t m = 0;
+                            for (++j; j < 9; j++) {
+                                if ('0' <= i[j] && i[j] <= '9') {
+                                    m = m * 10 + (i[j] - '0');
+                                } else {
+                                    c = i[j];
+                                    break;
+                                }
+                            }
+                            if (c == 'H') {
+                                if (n > 0) {
+                                    n--;
+                                }
+                                if (m > 0) {
+                                    m--;
+                                }
+                                if (n >= self->tilegrid->height_in_tiles) {
+                                    n = self->tilegrid->height_in_tiles - 1;
+                                }
+                                if (m >= self->tilegrid->width_in_tiles) {
+                                    m = self->tilegrid->width_in_tiles - 1;
+                                }
+                                n = (n + self->tilegrid->top_left_y) % self->tilegrid->height_in_tiles;
+                                self->cursor_x = m;
+                                self->cursor_y = n;
+                                start_y = self->cursor_y;
+                            }
+                        }
+                        i += j + 1;
+                        continue;
+                    }
+                }
+            }
+        } else {
+            uint8_t tile_index = fontio_builtinfont_get_glyph_index(self->font, c);
+            if (tile_index != 0xff) {
+                common_hal_displayio_tilegrid_set_tile(self->tilegrid, self->cursor_x, self->cursor_y, tile_index);
+                self->cursor_x++;
+
+            }
+        }
+        if (self->cursor_x >= self->tilegrid->width_in_tiles) {
+            self->cursor_y++;
+            self->cursor_x %= self->tilegrid->width_in_tiles;
+        }
+        if (self->cursor_y >= self->tilegrid->height_in_tiles) {
+            self->cursor_y %= self->tilegrid->height_in_tiles;
+        }
+        if (self->cursor_y != start_y) {
+            // clear the new row in case of scroll up
+            if (self->cursor_y == self->tilegrid->top_left_y) {
+                for (uint16_t j = 0; j < self->tilegrid->width_in_tiles; j++) {
+                    common_hal_displayio_tilegrid_set_tile(self->tilegrid, j, self->cursor_y, 0);
+                }
+                common_hal_displayio_tilegrid_set_top_left(self->tilegrid, 0, (self->cursor_y + self->tilegrid->height_in_tiles + 1) % self->tilegrid->height_in_tiles);
+            }
+            start_y = self->cursor_y;
+        }
+    }
+    return i - data;
+}
+
+bool common_hal_terminalio_terminal_ready_to_tx(terminalio_terminal_obj_t *self) {
+    return self->tilegrid != NULL;
+}
diff --git a/circuitpython/shared-module/terminalio/Terminal.h b/circuitpython/shared-module/terminalio/Terminal.h
new file mode 100644
index 0000000..2ba7e21
--- /dev/null
+++ b/circuitpython/shared-module/terminalio/Terminal.h
@@ -0,0 +1,46 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef SHARED_MODULE_TERMINALIO_TERMINAL_H
+#define SHARED_MODULE_TERMINALIO_TERMINAL_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "py/obj.h"
+#include "shared-module/fontio/BuiltinFont.h"
+#include "shared-module/displayio/TileGrid.h"
+
+typedef struct  {
+    mp_obj_base_t base;
+    const fontio_builtinfont_t *font;
+    uint16_t cursor_x;
+    uint16_t cursor_y;
+    displayio_tilegrid_t *tilegrid;
+    uint16_t first_row;
+} terminalio_terminal_obj_t;
+
+#endif /* SHARED_MODULE_TERMINALIO_TERMINAL_H */
diff --git a/circuitpython/shared-module/terminalio/__init__.c b/circuitpython/shared-module/terminalio/__init__.c
new file mode 100644
index 0000000..3f61f48
--- /dev/null
+++ b/circuitpython/shared-module/terminalio/__init__.c
@@ -0,0 +1,27 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 hathach for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "shared-bindings/terminalio/__init__.h"
diff --git a/circuitpython/shared-module/terminalio/__init__.h b/circuitpython/shared-module/terminalio/__init__.h
new file mode 100644
index 0000000..e925dd4
--- /dev/null
+++ b/circuitpython/shared-module/terminalio/__init__.h
@@ -0,0 +1,30 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef SHARED_MODULE_TERMINALIO___INIT___H
+#define SHARED_MODULE_TERMINALIO___INIT___H
+
+#endif /* SHARED_MODULE_TERMINALIO___INIT___H */