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author Paper <paper@tflc.us>
date Sun, 17 Nov 2024 19:56:01 -0500
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1 # utf8proc
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2 [![CI](https://github.com/NanoComp/meep/actions/workflows/build-ci.yml/badge.svg)](https://github.com/JuliaStrings/utf8proc/actions/workflows/build-ci.yml)
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3 [![AppVeyor status](https://ci.appveyor.com/api/projects/status/ivaa0v6ikxrmm5r6?svg=true)](https://ci.appveyor.com/project/StevenGJohnson/utf8proc)
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4
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5 [utf8proc](http://juliastrings.github.io/utf8proc/) is a small, clean C
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6 library that provides Unicode normalization, case-folding, and other
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7 operations for data in the [UTF-8
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8 encoding](http://en.wikipedia.org/wiki/UTF-8). It was [initially
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9 developed](http://www.public-software-group.org/utf8proc) by Jan
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10 Behrens and the rest of the [Public Software
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11 Group](http://www.public-software-group.org/), who deserve *nearly all
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12 of the credit* for this package. With the blessing of the Public
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13 Software Group, the [Julia developers](http://julialang.org/) have
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14 taken over development of utf8proc, since the original developers have
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15 moved to other projects.
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16
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17 (utf8proc is used for basic Unicode
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18 support in the [Julia language](http://julialang.org/), and the Julia
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19 developers became involved because they wanted to add Unicode 7 support and other features.)
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20
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21 (The original utf8proc package also includes Ruby and PostgreSQL plug-ins.
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22 We removed those from utf8proc in order to focus exclusively on the C
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23 library for the time being, but plan to add them back in or release them as separate packages.)
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24
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25 The utf8proc package is licensed under the
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26 free/open-source [MIT "expat"
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27 license](http://opensource.org/licenses/MIT) (plus certain Unicode
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28 data governed by the similarly permissive [Unicode data
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29 license](http://www.unicode.org/copyright.html#Exhibit1)); please see
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30 the included `LICENSE.md` file for more detailed information.
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31
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32 ## Quick Start
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33
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34 Typical users should download a [utf8proc release](http://juliastrings.github.io/utf8proc/releases/) rather than cloning directly from github.
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35
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36 For compilation of the C library, run `make`. You can also install the library and header file with `make install` (by default into `/usr/local/lib` and `/usr/local/bin`, but this can be changed by `make prefix=/some/dir`). `make check` runs some tests, and `make clean` deletes all of the generated files.
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37
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38 Alternatively, you can compile with `cmake`, e.g. by
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39 ```sh
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40 mkdir build
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41 cmake -S . -B build
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42 cmake --build build
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43 ```
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44
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45 ### Using other compilers
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46 The included `Makefile` supports GNU/Linux flavors and MacOS with `gcc`-like compilers; Windows users will typically use `cmake`.
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47
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48 For other Unix-like systems and other compilers, you may need to pass modified settings to `make` in order to use the correct compilation flags for building shared libraries on your system.
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49
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50 For HP-UX with HP's `aCC` compiler and GNU Make (installed as `gmake`), you can compile with
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51 ```
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52 gmake CC=/opt/aCC/bin/aCC CFLAGS="+O2" PICFLAG="+z" C99FLAG="-Ae" WCFLAGS="+w" LDFLAG_SHARED="-b" SOFLAG="-Wl,+h"
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53 ```
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54 To run `gmake install` you will need GNU coreutils for the `install` command, and you may want to pass `prefix=/opt libdir=/opt/lib/hpux32` or similar to change the installation location.
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55
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56 ## General Information
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57
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58 The C library is found in this directory after successful compilation
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59 and is named `libutf8proc.a` (for the static library) and
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60 `libutf8proc.so` (for the dynamic library).
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61
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62 The Unicode version supported is 15.1.0.
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63
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64 For Unicode normalizations, the following options are used:
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65
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66 * Normalization Form C: `STABLE`, `COMPOSE`
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67 * Normalization Form D: `STABLE`, `DECOMPOSE`
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68 * Normalization Form KC: `STABLE`, `COMPOSE`, `COMPAT`
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69 * Normalization Form KD: `STABLE`, `DECOMPOSE`, `COMPAT`
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70
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71 ## C Library
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72
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73 The documentation for the C library is found in the `utf8proc.h` header file.
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74 `utf8proc_map` is function you will most likely be using for mapping UTF-8
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75 strings, unless you want to allocate memory yourself.
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76
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77 ## To Do
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78
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79 See the Github [issues list](https://github.com/JuliaLang/utf8proc/issues).
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80
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81 ## Contact
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82
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83 Bug reports, feature requests, and other queries can be filed at
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84 the [utf8proc issues page on Github](https://github.com/JuliaLang/utf8proc/issues).
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85
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86 ## See also
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87
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88 An independent Lua translation of this library, [lua-mojibake](https://github.com/differentprogramming/lua-mojibake), is also available.