1# ICU Parts
 2
 3This directory contains a small subset of files from the Unicode organization's [ICU repository](https://github.com/unicode-org/icu).
 4
 5### License
 6
 7The license for these files is contained in the `LICENSE` file within this directory.
 8
 9### Contents
10
11* Source files taken from the [`icu4c/source/common/unicode`](https://github.com/unicode-org/icu/tree/552b01f61127d30d6589aa4bf99468224979b661/icu4c/source/common/unicode) directory:
12  * `utf8.h`
13  * `utf16.h`
14  * `umachine.h`
15* Empty source files that are referenced by the above source files, but whose original contents in `libicu` are not needed:
16  * `ptypes.h`
17  * `urename.h`
18  * `utf.h`
19* `ICU_SHA` - File containing the Git SHA of the commit in the `icu` repository from which the files were obtained.
20* `LICENSE` - The license file from the [`icu4c`](https://github.com/unicode-org/icu/tree/552b01f61127d30d6589aa4bf99468224979b661/icu4c) directory of the `icu` repository.
21* `README.md` - This text file.
22
23### Updating ICU
24
25To incorporate changes from the upstream `icu` repository:
26
27* Update `ICU_SHA` with the new Git SHA.
28* Update `LICENSE` with the license text from the directory mentioned above.
29* Update `utf8.h`, `utf16.h`, and `umachine.h` with their new contents in the `icu` repository.