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require 'formula'
# This stays around for the English-only build option
class TesseractEnglishData < Formula
url 'http://tesseract-ocr.googlecode.com/files/tesseract-ocr-3.02.eng.tar.gz'
version '3.02'
sha1 '989ed4c3a5b246d7353893e466c353099d8b73a1'
end
class Tesseract < Formula
homepage 'http://code.google.com/p/tesseract-ocr/'
url 'http://tesseract-ocr.googlecode.com/files/tesseract-ocr-3.02.02.tar.gz'
sha1 'a950acf7b75cf851de2de787e9abb62c58ca1827'
option "all-languages", "Install recognition data for all languages"
depends_on 'libtiff'
depends_on 'leptonica'
fails_with :llvm do
build 2206
cause "Executable 'tesseract' segfaults on 10.6 when compiled with llvm-gcc"
end
def install
# explicitly state leptonica header location, as the makefile defaults to /usr/local/include,
# which doesn't work for non-default homebrew location
ENV['LIBLEPT_HEADERSDIR'] = HOMEBREW_PREFIX/"include"
system "./configure", "--disable-dependency-tracking", "--prefix=#{prefix}"
system "make install"
if build.include? "all-languages"
install_language_data
else
TesseractEnglishData.new.brew { mv Dir['tessdata/*'], "#{share}/tessdata/" }
end
end
def caveats; <<-EOF.undent
Tesseract is an OCR (Optical Character Recognition) engine.
The easiest way to use it is to convert the source to a Grayscale tiff:
`convert source.png -type Grayscale terre_input.tif`
then run tesseract:
`tesseract terre_input.tif output`
EOF
end
def install_language_data
langs = {
'eng' => '989ed4c3a5b246d7353893e466c353099d8b73a1',
'heb' => '67e10e616caf62545eacd436e85f89436687e22b',
'hin' => '4ceef97ffb8b4ab5ac79ee4bad5b5be0885f228f',
'ara' => 'e15cf6b7a027454db56ecedab0038c7739ab29cc',
'tha' => '04a35c04585a887662dc668e54f5368dabf31f50'
}
langs.each do |lang, sha|
klass = Class.new(Formula) do
url "http://tesseract-ocr.googlecode.com/files/tesseract-ocr-3.02.#{lang}.tar.gz"
version '3.02'
sha1 sha
end
klass.new.brew { mv Dir['tessdata/*'], "#{share}/tessdata/" }
end
# pre-3.01 language data uses a different URL format and installs differently
langs_old = {
'chr' => 'e49b17bb73911926050d45832171a54ab1d1f34c',
'deu-frak' => '5651562e0d944b5b89cc5977d71482089f12669f',
'swe-frak' => '22220ad4303ebe290e4e71170e96b488e81a7f1a',
'chi_tra' => 'a9798de7e068d85613602aa33a153da721aadc82',
'chi_sim' => '35f0254f159edeed509ec1e0779073bf998b6cdb',
'ind' => 'f4214ce40c5f6ef92085a8a45e9ff03f7cf7afca',
'swe' => '55291e8ea664155ad51db867284c11ad1a1c5d00',
'ron' => 'c20c73a2e17f5fe692de0fe9ac681da3984229ae',
'slv' => 'fbe464cd49d6a7495e6d95600d421aa2dd0b9d77',
'srp' => '47afc601b62998e4cc3f7403d846ba861f30b416',
'tgl' => '153ba1d0ddd209e1581d81d42fe5346f748e2f27',
'tur' => 'a01da62f3830833b258e2d46ce0f2852571470e6',
'hun' => '32ecad03877a841fbc0cb31c269214640008d604',
'fin' => '004d74d13f7b53cbefb86e2ba12bc67dce81d936',
'ita' => 'c166ba79256f6e7c1b993b2db7403d794131fe05',
'nld' => 'f7e3d46b1747a19158ac0797e859b65c56b5045f',
'nor' => 'fb65dede5fbe120823ecdcb0c6cbd1222ae7e245',
'jpn' => '6d605eee29e76fb841924916bd34095bbbbc45c0',
'vie' => '9158748a63afe87e4e25b5f32c222555f2ad8417',
'spa' => '7b30950749e84891fdef5f89409c3cf1b6418cd3',
'ukr' => '06ceebfd91fa473d6d91f8a2856c66733bea0131',
'fra' => '8d698bb3b659e862b3274970a57b3214de76f1ff',
'slk' => '16207e26d53504f98a7b1fadcb873dc4611149ec',
'kor' => '37bcd8110a426714f54d99f58b30104b3014ce5a',
'ell' => 'b7a449fc320cc579a729c0352e5cc642f565e64e',
'rus' => '2740accefc45e4ae004269ccb195948b8037a583',
'por' => '883e5e1fa1d991ef6d202951ee9d26a71db181dc',
'bul' => 'a9efae5e347a36ea90bd2ad357e732ad4da47fd3',
'lav' => 'b4efd308e725d743884f2984f804c82dd5382f63',
'lit' => '7adbe396a281c0f87c0b95da7e84b5b6029e3dbd',
'pol' => 'a303fc31b4b60532b01b4ccdc838f02ff0113f27',
'dan-frak' => 'c0eba6d3ca688a04fd8e3ce45fdbbf20e8e67d45',
'deu' => 'c4b3ecde18ce9f114faba88cdfd0308f90801266',
'dan' => 'bfac9c00d28fc4b19034c2098d41087a173084ae',
'ces' => 'dbec19aa23f42a08e6b195a96e64b443f7519620',
'cat' => '0301a9c81c1d646bd1b135ca89476fb63bd634f8'
}
langs_old.each do |lang, sha|
klass = Class.new(Formula) do
url "http://tesseract-ocr.googlecode.com/files/#{lang}.traineddata.gz",
:using => GzipOnlyDownloadStrategy
version '3.00'
sha1 sha
end
klass.new.brew { mv Dir['*'], "#{share}/tessdata/" }
end
end
end
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