Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/harfbuzz/README.md @ 32:72c1b70d4f5c

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author Franz Glasner <fzglas.hg@dom66.de>
date Sun, 21 Sep 2025 15:10:12 +0200
parents b50eed0cc0ef
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1 [![Linux CI Status](https://github.com/harfbuzz/harfbuzz/workflows/linux-ci/badge.svg)](https://github.com/harfbuzz/harfbuzz/workflows/linux-ci/badge.svg)
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2 [![CircleCI Build Status](https://circleci.com/gh/harfbuzz/harfbuzz/tree/main.svg?style=svg)](https://circleci.com/gh/harfbuzz/harfbuzz/tree/main)
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3 [![OSS-Fuzz Status](https://oss-fuzz-build-logs.storage.googleapis.com/badges/harfbuzz.svg)](https://oss-fuzz-build-logs.storage.googleapis.com/index.html)
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4 [![Coverity Scan Build Status](https://scan.coverity.com/projects/15166/badge.svg)](https://scan.coverity.com/projects/harfbuzz)
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5 [![Codacy Badge](https://app.codacy.com/project/badge/Grade/89c872f5ce1c42af802602bfcd15d90a)](https://www.codacy.com/gh/harfbuzz/harfbuzz/dashboard?utm_source=github.com&amp;utm_medium=referral&amp;utm_content=harfbuzz/harfbuzz&amp;utm_campaign=Badge_Grade)
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6 [![Codecov Code Coverage](https://codecov.io/gh/harfbuzz/harfbuzz/branch/main/graph/badge.svg)](https://codecov.io/gh/harfbuzz/harfbuzz)
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7 [![Packaging status](https://repology.org/badge/tiny-repos/harfbuzz.svg)](https://repology.org/project/harfbuzz/versions)
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9 # HarfBuzz
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11 HarfBuzz is a text shaping engine. It primarily supports [OpenType][1], but also
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12 [Apple Advanced Typography][2]. HarfBuzz is used in Android, Chrome,
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13 ChromeOS, Firefox, GNOME, GTK+, KDE, LibreOffice, OpenJDK, PlayStation, Qt,
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14 XeTeX, and other places.
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16 For bug reports, mailing list, and other information please visit:
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18 http://harfbuzz.org/
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20 For license information, see [COPYING](COPYING).
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22 ## Documentation
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24 For user manual as well as API documentation, check: https://harfbuzz.github.io
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26 ## Download
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28 For tarball releases of HarfBuzz, look [here][3]. At the same place you
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29 will also find Win32/Win64 binary bundles that include libharfbuzz DLL,
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30 hb-view.exe, hb-shape.exe, and all dependencies.
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32 The canonical source tree is available on [github][4].
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34 The API that comes with `hb.h` will not change incompatibly. Other, peripheral,
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35 headers are more likely to go through minor modifications, but again, we do our
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36 best to never change API in an incompatible way. We will never break the ABI.
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38 If you are not sure whether Pango or HarfBuzz is right for you, read [Pango vs
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39 HarfBuzz][5].
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41 ## Development
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43 For build information, see [BUILD.md](BUILD.md).
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45 For custom configurations, see [CONFIG.md](CONFIG.md).
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47 For testing and profiling, see [TESTING.md](TESTING.md).
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49 To get a better idea of where HarfBuzz stands in the text rendering stack you
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50 may want to read [State of Text Rendering][6], though, that document is many
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51 years old. Here are a few presentation slides about HarfBuzz at the
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52 Internationalization and Unicode Conference over the years:
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54 * November 2014, [Unicode, OpenType, and HarfBuzz: Closing the Circle][7],
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55 * October 2012, [HarfBuzz, The Free and Open Text Shaping Engine][8],
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56 * October 2009, [HarfBuzz: the Free and Open Shaping Engine][9].
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58 Both development and user support discussion around HarfBuzz happens on the
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59 [github][4].
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61 To report bugs or submit patches please use [github][4] issues and
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62 pull-requests.
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64 For a comparison of old vs new HarfBuzz memory consumption see [this][10].
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66 <!--See past and upcoming [HarfBuzz Hackfests](https://freedesktop.org/wiki/Software/HarfBuzz/Hackfests/)!-->
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68 ## Name
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70 HarfBuzz (حرف‌باز) is my Persian translation of “[OpenType][1]”,
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71 transliterated using the Latin script. It sports a second meaning, but that
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72 ain’t translatable.
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74 > Background: Originally there was this font format called TrueType. People and
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75 > companies started calling their type engines all things ending in Type:
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76 > FreeType, CoolType, ClearType, etc. And then came OpenType, which is the
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77 > successor of TrueType. So, for my OpenType implementation, I decided to stick
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78 > with the concept but use the Persian translation. Which is fitting given that
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79 > Persian is written in the Arabic script, and OpenType is an extension of
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80 > TrueType that adds support for complex script rendering, and HarfBuzz is an
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81 > implementation of OpenType complex text shaping.
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83 <details>
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84 <summary>Packaging status of HarfBuzz</summary>
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86 [![Packaging status](https://repology.org/badge/vertical-allrepos/harfbuzz.svg?header=harfbuzz)](https://repology.org/project/harfbuzz/versions)
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88 </details>
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90 [1]: https://docs.microsoft.com/en-us/typography/opentype/spec/
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91 [2]: https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6AATIntro.html
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92 [3]: https://github.com/harfbuzz/harfbuzz/releases
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93 [4]: https://github.com/harfbuzz/harfbuzz
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
94 [5]: http://mces.blogspot.com/2009/11/pango-vs-harfbuzz.html
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
95 [6]: http://behdad.org/text/
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
96 [7]: https://goo.gl/FSIQuC
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
97 [8]: https://goo.gl/2wSRu
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
98 [9]: http://behdad.org/download/Presentations/slippy/harfbuzz_slides.pdf
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
99 [10]: https://goo.gl/woyty