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-rw-r--r--docs/feature_unicode.md22
-rw-r--r--quantum/process_keycode/process_unicode_common.c49
-rw-r--r--quantum/process_keycode/process_unicode_common.h1
3 files changed, 67 insertions, 5 deletions
diff --git a/docs/feature_unicode.md b/docs/feature_unicode.md
index bd1f4fa5ae..546af2521a 100644
--- a/docs/feature_unicode.md
+++ b/docs/feature_unicode.md
@@ -193,12 +193,24 @@ By default, when the keyboard boots, it will initialize the input mode to the la
!> 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.
-## `send_unicode_hex_string`
+## `send_unicode_string()`
-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.
-For example, the table flip seen above would be `send_unicode_hex_string("0028 30CE 0CA0 75CA 0CA0 0029 30CE 5F61 253B 2501 253B")`
+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.
-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.
+```c
+send_unicode_string("(ノಠ痊ಠ)ノ彡┻━┻");
+```
+
+## `send_unicode_hex_string()`
+
+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:
+
+```c
+send_unicode_hex_string("0028 30CE 0CA0 75CA 0CA0 0029 30CE 5F61 253B 2501 253B");
+```
+
+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.
+Unlike `send_unicode_string()` this function supports code points up to U+10FFFF.
## Additional Language Support
@@ -228,6 +240,6 @@ AutoHotkey inserts the Text right of `Send, ` when this combination is pressed.
If you enable the US International layout on the system, it will use punctuation to accent the characters.
-For instance, typing "`a" will result in à.
+For instance, typing "\`a" will result in à.
You can find details on how to enable this [here](https://support.microsoft.com/en-us/help/17424/windows-change-keyboard-layout).
diff --git a/quantum/process_keycode/process_unicode_common.c b/quantum/process_keycode/process_unicode_common.c
index 94383f19b7..4ac305e661 100644
--- a/quantum/process_keycode/process_unicode_common.c
+++ b/quantum/process_keycode/process_unicode_common.c
@@ -178,6 +178,55 @@ void send_unicode_hex_string(const char *str) {
}
}
+// Borrowed from https://nullprogram.com/blog/2017/10/06/
+const char *decode_utf8(const char *str, int32_t *code_point) {
+ const char *next;
+
+ if (str[0] < 0x80) { // U+0000-007F
+ *code_point = str[0];
+ next = str + 1;
+ } else if ((str[0] & 0xE0) == 0xC0) { // U+0080-07FF
+ *code_point = ((int32_t)(str[0] & 0x1F) << 6) | ((int32_t)(str[1] & 0x3F) << 0);
+ next = str + 2;
+ } else if ((str[0] & 0xF0) == 0xE0) { // U+0800-FFFF
+ *code_point = ((int32_t)(str[0] & 0x0F) << 12) | ((int32_t)(str[1] & 0x3F) << 6) | ((int32_t)(str[2] & 0x3F) << 0);
+ next = str + 3;
+ } else if ((str[0] & 0xF8) == 0xF0 && (str[0] <= 0xF4)) { // U+10000-10FFFF
+ // Skip for now - register_hex() only takes a uint16
+ //*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);
+ *code_point = -1;
+ next = str + 4;
+ } else {
+ *code_point = -1;
+ next = str + 1;
+ }
+
+ // part of a UTF-16 surrogate pair - invalid
+ if (*code_point >= 0xD800 && *code_point <= 0xDFFF) {
+ *code_point = -1;
+ }
+
+ return next;
+}
+
+void send_unicode_string(const char *str) {
+ if (!str) {
+ return;
+ }
+
+ int32_t code_point = 0;
+
+ while (*str) {
+ str = decode_utf8(str, &code_point);
+
+ if (code_point >= 0) {
+ unicode_input_start();
+ register_hex(code_point);
+ unicode_input_finish();
+ }
+ }
+}
+
bool process_unicode_common(uint16_t keycode, keyrecord_t *record) {
if (record->event.pressed) {
switch (keycode) {
diff --git a/quantum/process_keycode/process_unicode_common.h b/quantum/process_keycode/process_unicode_common.h
index cab6eea6ea..393db2d99e 100644
--- a/quantum/process_keycode/process_unicode_common.h
+++ b/quantum/process_keycode/process_unicode_common.h
@@ -80,6 +80,7 @@ void unicode_input_cancel(void);
void register_hex(uint16_t hex);
void send_unicode_hex_string(const char *str);
+void send_unicode_string(const char *str);
bool process_unicode_common(uint16_t keycode, keyrecord_t *record);