| [6a3a178] | 1 | has-unicode
|
|---|
| 2 | ===========
|
|---|
| 3 |
|
|---|
| 4 | Try to guess if your terminal supports unicode
|
|---|
| 5 |
|
|---|
| 6 | ```javascript
|
|---|
| 7 | var hasUnicode = require("has-unicode")
|
|---|
| 8 |
|
|---|
| 9 | if (hasUnicode()) {
|
|---|
| 10 | // the terminal probably has unicode support
|
|---|
| 11 | }
|
|---|
| 12 | ```
|
|---|
| 13 | ```javascript
|
|---|
| 14 | var hasUnicode = require("has-unicode").tryHarder
|
|---|
| 15 | hasUnicode(function(unicodeSupported) {
|
|---|
| 16 | if (unicodeSupported) {
|
|---|
| 17 | // the terminal probably has unicode support
|
|---|
| 18 | }
|
|---|
| 19 | })
|
|---|
| 20 | ```
|
|---|
| 21 |
|
|---|
| 22 | ## Detecting Unicode
|
|---|
| 23 |
|
|---|
| 24 | What we actually detect is UTF-8 support, as that's what Node itself supports.
|
|---|
| 25 | If you have a UTF-16 locale then you won't be detected as unicode capable.
|
|---|
| 26 |
|
|---|
| 27 | ### Windows
|
|---|
| 28 |
|
|---|
| 29 | Since at least Windows 7, `cmd` and `powershell` have been unicode capable,
|
|---|
| 30 | but unfortunately even then it's not guaranteed. In many localizations it
|
|---|
| 31 | still uses legacy code pages and there's no facility short of running
|
|---|
| 32 | programs or linking C++ that will let us detect this. As such, we
|
|---|
| 33 | report any Windows installation as NOT unicode capable, and recommend
|
|---|
| 34 | that you encourage your users to override this via config.
|
|---|
| 35 |
|
|---|
| 36 | ### Unix Like Operating Systems
|
|---|
| 37 |
|
|---|
| 38 | We look at the environment variables `LC_ALL`, `LC_CTYPE`, and `LANG` in
|
|---|
| 39 | that order. For `LC_ALL` and `LANG`, it looks for `.UTF-8` in the value.
|
|---|
| 40 | For `LC_CTYPE` it looks to see if the value is `UTF-8`. This is sufficient
|
|---|
| 41 | for most POSIX systems. While locale data can be put in `/etc/locale.conf`
|
|---|
| 42 | as well, AFAIK it's always copied into the environment.
|
|---|
| 43 |
|
|---|
