Ender3 - Marlin 2.1.2.4 build (#16)

creality-ender3/Marlin-2.1.2.4/Marlin/src/lcd/utf8.h

@@ -0,0 +1,79 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * @file    utf8.h
+ * @brief   Helper functions for UTF-8 strings
+ * @author  Yunhui Fu (yhfudev@gmail.com)
+ * @version 1.0
+ * @date    2016-08-19
+ * @copyright GPL/BSD
+ */
+#pragma once
+
+#include <stdlib.h>
+#include <stdint.h> // uint32_t
+
+#include "../HAL/shared/Marduino.h"
+#include "../core/macros.h"
+
+#define MAX_UTF8_CHAR_SIZE 4
+
+// Use a longer character type (if needed) because wchar_t is only 16 bits wide
+#ifdef MAX_UTF8_CHAR_SIZE
+  #if MAX_UTF8_CHAR_SIZE > 2
+    typedef uint32_t lchar_t;
+  #else
+    typedef wchar_t lchar_t;
+  #endif
+#else
+  #define wchar_t uint32_t
+#endif
+
+// read a byte from ROM or RAM
+typedef uint8_t (*read_byte_cb_t)(const uint8_t * str);
+
+uint8_t read_byte_ram(const uint8_t *str);
+uint8_t read_byte_rom(const uint8_t *str);
+
+typedef uint16_t pixel_len_t;
+#define PIXEL_LEN_NOLIMIT ((pixel_len_t)(-1))
+
+/* Perform binary search */
+typedef int (* pf_bsearch_cb_comp_t)(void *userdata, size_t idx, void * data_pin);
+int pf_bsearch_r(void *userdata, size_t num_data, pf_bsearch_cb_comp_t cb_comp, void *data_pinpoint, size_t *ret_idx);
+
+/* Get the character, decoding multibyte UTF8 characters and returning a pointer to the start of the next UTF8 character */
+const uint8_t* get_utf8_value_cb(const uint8_t *pstart, read_byte_cb_t cb_read_byte, lchar_t &pval);
+
+inline const char* get_utf8_value_cb(const char *pstart, read_byte_cb_t cb_read_byte, lchar_t &pval) {
+  return (const char *)get_utf8_value_cb((const uint8_t *)pstart, cb_read_byte, pval);
+}
+
+/* Returns length of string in CHARACTERS, NOT BYTES */
+uint8_t utf8_strlen(const char *pstart);
+uint8_t utf8_strlen_P(PGM_P pstart);
+inline uint8_t utf8_strlen(FSTR_P fstart) { return utf8_strlen_P(FTOP(fstart)); }
+
+/* Returns start byte position of desired char number */
+uint8_t utf8_byte_pos_by_char_num(const char *pstart, const uint8_t charnum);
+uint8_t utf8_byte_pos_by_char_num_P(PGM_P pstart, const uint8_t charnum);