A proper send_string()
for the Unicode feature (#8155)
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@ -193,12 +193,24 @@ By default, when the keyboard boots, it will initialize the input mode to the la
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!> Using `UNICODE_SELECTED_MODES` means you don't have to initially set the input mode in `matrix_init_user()` (or a similar function); the Unicode system will do that for you on startup. This has the added benefit of avoiding unnecessary writes to EEPROM.
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## `send_unicode_hex_string`
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## `send_unicode_string()`
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To type multiple characters for things like (ノಠ痊ಠ)ノ彡┻━┻, you can use `send_unicode_hex_string()` much like `SEND_STRING()` except you would use hex values separate by spaces.
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For example, the table flip seen above would be `send_unicode_hex_string("0028 30CE 0CA0 75CA 0CA0 0029 30CE 5F61 253B 2501 253B")`
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This function is much like `send_string()` but allows you to input UTF-8 characters directly, currently up to code point U+FFFF. Make sure your `keymap.c` is formatted in UTF-8 encoding.
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There are many ways to get a hex code, but an easy one is [this site](https://r12a.github.io/app-conversion/). Just make sure to convert to hexadecimal, and that is your string.
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```c
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send_unicode_string("(ノಠ痊ಠ)ノ彡┻━┻");
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```
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## `send_unicode_hex_string()`
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Similar to `send_unicode_string()`, but the characters are represented by their code point values in ASCII, separated by spaces. For example, the table flip above would be achieved with:
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```c
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send_unicode_hex_string("0028 30CE 0CA0 75CA 0CA0 0029 30CE 5F61 253B 2501 253B");
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```
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An easy way to convert your Unicode string to this format is by using [this site](https://r12a.github.io/app-conversion/), and taking the result in the "Hex/UTF-32" section.
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Unlike `send_unicode_string()` this function supports code points up to U+10FFFF.
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## Additional Language Support
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@ -228,6 +240,6 @@ AutoHotkey inserts the Text right of `Send, ` when this combination is pressed.
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If you enable the US International layout on the system, it will use punctuation to accent the characters.
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For instance, typing "`a" will result in à.
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For instance, typing "\`a" will result in à.
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You can find details on how to enable this [here](https://support.microsoft.com/en-us/help/17424/windows-change-keyboard-layout).
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@ -178,6 +178,55 @@ void send_unicode_hex_string(const char *str) {
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}
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}
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// Borrowed from https://nullprogram.com/blog/2017/10/06/
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const char *decode_utf8(const char *str, int32_t *code_point) {
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const char *next;
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if (str[0] < 0x80) { // U+0000-007F
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*code_point = str[0];
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next = str + 1;
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} else if ((str[0] & 0xE0) == 0xC0) { // U+0080-07FF
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*code_point = ((int32_t)(str[0] & 0x1F) << 6) | ((int32_t)(str[1] & 0x3F) << 0);
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next = str + 2;
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} else if ((str[0] & 0xF0) == 0xE0) { // U+0800-FFFF
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*code_point = ((int32_t)(str[0] & 0x0F) << 12) | ((int32_t)(str[1] & 0x3F) << 6) | ((int32_t)(str[2] & 0x3F) << 0);
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next = str + 3;
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} else if ((str[0] & 0xF8) == 0xF0 && (str[0] <= 0xF4)) { // U+10000-10FFFF
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// Skip for now - register_hex() only takes a uint16
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//*code_point = ((int32_t)(str[0] & 0x07) << 18) | ((int32_t)(str[1] & 0x3F) << 12) | ((int32_t)(str[2] & 0x3F) << 6) | ((int32_t)(str[3] & 0x3F) << 0);
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*code_point = -1;
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next = str + 4;
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} else {
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*code_point = -1;
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next = str + 1;
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}
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// part of a UTF-16 surrogate pair - invalid
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if (*code_point >= 0xD800 && *code_point <= 0xDFFF) {
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*code_point = -1;
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}
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return next;
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}
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void send_unicode_string(const char *str) {
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if (!str) {
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return;
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}
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int32_t code_point = 0;
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while (*str) {
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str = decode_utf8(str, &code_point);
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if (code_point >= 0) {
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unicode_input_start();
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register_hex(code_point);
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unicode_input_finish();
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}
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}
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}
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bool process_unicode_common(uint16_t keycode, keyrecord_t *record) {
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if (record->event.pressed) {
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switch (keycode) {
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@ -80,6 +80,7 @@ void unicode_input_cancel(void);
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void register_hex(uint16_t hex);
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void send_unicode_hex_string(const char *str);
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void send_unicode_string(const char *str);
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bool process_unicode_common(uint16_t keycode, keyrecord_t *record);
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