44 lines
1.3 KiB
Ruby
44 lines
1.3 KiB
Ruby
require 'formula'
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require 'download_strategy'
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# Normal strategy tries to untar as well
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class GzipOnlyDownloadStrategy < CurlDownloadStrategy
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def stage
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FileUtils.mv @tarball_path, File.basename(@url)
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safe_system '/usr/bin/gunzip', '-f', File.basename(@url)
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end
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end
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class TesseractEnglishData < Formula
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url 'http://tesseract-ocr.googlecode.com/files/eng.traineddata.gz',
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:using => GzipOnlyDownloadStrategy
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md5 'd91041ad156cf2db36664e91ef799451'
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version '3.00'
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end
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class Tesseract < Formula
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url 'http://tesseract-ocr.googlecode.com/files/tesseract-3.00.tar.gz'
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homepage 'http://code.google.com/p/tesseract-ocr/'
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md5 'cc812a261088ea0c3d2da735be35d09f'
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depends_on 'libtiff'
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fails_with_llvm "Executable 'tesseract' segfaults on 10.6 when compiled with llvm-gcc", :build => "2206"
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def install
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system "./configure", "--disable-dependency-tracking", "--prefix=#{prefix}"
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system "make install"
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TesseractEnglishData.new.brew { mv "eng.traineddata", "#{share}/tessdata/" }
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end
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def caveats; <<-EOF.undent
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Tesseract is an OCR (Optical Character Recognition) engine.
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The easiest way to use it is to convert the source to a Grayscale tiff:
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`convert source.png -type Grayscale terre_input.tif`
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then run tesseract:
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`tesseract terre_input.tif output`
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EOF
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end
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end
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