diff options
| -rw-r--r-- | pkgs/applications/graphics/tesseract/4.x.nix | 61 | ||||
| -rw-r--r-- | pkgs/top-level/all-packages.nix | 1 |
2 files changed, 62 insertions, 0 deletions
diff --git a/pkgs/applications/graphics/tesseract/4.x.nix b/pkgs/applications/graphics/tesseract/4.x.nix new file mode 100644 index 000000000000..577bff91e353 --- /dev/null +++ b/pkgs/applications/graphics/tesseract/4.x.nix @@ -0,0 +1,61 @@ +{ stdenv, fetchFromGitHub, autoreconfHook, autoconf-archive, pkgconfig +, leptonica, libpng, libtiff, icu, pango, opencl-headers + +# Supported list of languages or `null' for all available languages +, enableLanguages ? null +}: + +stdenv.mkDerivation rec { + name = "tesseract-${version}"; + version = "4.00.00alpha-git-20170410"; + + src = fetchFromGitHub { + owner = "tesseract-ocr"; + repo = "tesseract"; + rev = "36a995bdc92eb2dd8bc5a63205708944a3f990a1"; + sha256 = "0xz3krvap8sdm27v1dyb34lcdmx11wzvxyszpppfsfmjgkvg19bq"; + }; + + tessdata = fetchFromGitHub { + owner = "tesseract-ocr"; + repo = "tessdata"; + rev = "8bf2e7ad08db9ca174ae2b0b3a7498c9f1f71d40"; + sha256 = "0idwkv4qsmmqhrxcgyhy32yldl3vk054m7dkv4fjswfnalgsx794"; + }; + + nativeBuildInputs = [ pkgconfig autoreconfHook autoconf-archive ]; + buildInputs = [ leptonica libpng libtiff icu pango opencl-headers ]; + + # Copy the .traineddata files of the languages specified in enableLanguages + # into `$out/share/tessdata' and check afterwards if copying was successful. + postInstall = let + mkArg = lang: "-iname ${stdenv.lib.escapeShellArg "${lang}.traineddata"}"; + mkFindArgs = stdenv.lib.concatMapStringsSep " -o " mkArg; + findLangArgs = if enableLanguages != null + then "\\( ${mkFindArgs enableLanguages} \\)" + else "-iname '*.traineddata'"; + in '' + numLangs="$(find "$tessdata" -mindepth 1 -maxdepth 1 -type f \ + ${findLangArgs} -exec cp -t "$out/share/tessdata" {} + -print | wc -l)" + + ${if enableLanguages != null then '' + expected=${toString (builtins.length enableLanguages)} + '' else '' + expected="$(ls -1 "$tessdata/"*.traineddata | wc -l)" + ''} + + if [ "$numLangs" -ne "$expected" ]; then + echo "Expected $expected languages, but $numLangs" \ + "were copied to \`$out/share/tessdata'" >&2 + exit 1 + fi + ''; + + meta = { + description = "OCR engine"; + homepage = http://code.google.com/p/tesseract-ocr/; + license = stdenv.lib.licenses.asl20; + maintainers = with stdenv.lib.maintainers; [viric]; + platforms = with stdenv.lib.platforms; linux; + }; +} diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix index 7062bedd9b14..29caabbda57f 100644 --- a/pkgs/top-level/all-packages.nix +++ b/pkgs/top-level/all-packages.nix @@ -15687,6 +15687,7 @@ with pkgs; }; tesseract = callPackage ../applications/graphics/tesseract { }; + tesseract_4 = lowPrio (callPackage ../applications/graphics/tesseract/4.x.nix { }); tetraproc = callPackage ../applications/audio/tetraproc { }; |