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@y-keninトレジャーデータ株式会社

pdf2htmlEX（PDFをHTMLに変換するコマンド）をOSXでbrew installする方法

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PDFをhtml化してNokogiriなどでパースする処理を実装する際に便利そうなpdf2htmlEXというものがあります。
Homebrew にあったのでbrew install pdf2htmlexを実行したところ、次のWarningが出力されて終了しました。

$ brew install pdf2htmlex
==> Installing dependencies for pdf2htmlex: sqlite, openssl, python, glib
==> Installing pdf2htmlex dependency: sqlite

...snip...

==> Installing pdf2htmlex
==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/pdf2htmlex-
######################################################################## 100.0%
==> Pouring pdf2htmlex-0.12.mavericks.bottle.1.tar.gz
Warning: pdf2htmlex dependency libtiff was built with a different C++ standard
library (libstdc++ from clang). This may cause problems at runtime.
?  /usr/local/Cellar/pdf2htmlex/0.12: 1421 files, 34M

上手く行っていない気がしながらもpdf2htmlEXコマンドを実行するとやはり、
libpoppler.48.dylibから参照されているlibtiffが見えないというエラーとなりました。

$ pdf2htmlEX
dyld: Library not loaded: /usr/local/lib/libtiff.5.dylib
  Referenced from: /usr/local/lib/libpoppler.48.dylib
  Reason: image not found
Trace/BPT trap: 5

libtiff.5.dylibが見つからないそうです。確かにlsコマンドを実行してもありません。
どうやら、MacOSX10.8から10.9へアップデートした影響で、関連ライブラリが見えなくなっているようです。
再度入れ直す事で対処してみましょう。

$ brew install libtiff
Warning: libtiff-4.0.3 already installed

$ brew uninstall libtiff
Uninstalling /usr/local/Cellar/libtiff/4.0.3...

$ brew install libtiff
==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/libtiff-4.0
######################################################################## 100.0%
==> Pouring libtiff-4.0.3.mavericks.bottle.tar.gz
?  /usr/local/Cellar/libtiff/4.0.3: 254 files, 3.8M

再度試すと、今度はlibjpegが見つからないと言われます。

$ pdf2htmlEX
dyld: Library not loaded: /usr/local/lib/libjpeg.8.dylib
  Referenced from: /usr/local/lib/libpoppler.48.dylib
  Reason: image not found
Trace/BPT trap: 5

先ほどと同様に、uninstallとinstallを行います。

$ brew uninstall libjpeg
Uninstalling /usr/local/Cellar/jpeg/8d...

$ brew install libjpeg
==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/jpeg-8d.mav
######################################################################## 100.0%
==> Pouring jpeg-8d.mavericks.bottle.2.tar.gz
?  /usr/local/Cellar/jpeg/8d: 18 files, 780K

今度こそ。やっと動きましたね！！
お疲れ様でした。

$ pdf2htmlEX
Usage: pdf2htmlEX [options] <input.pdf> [<output.html>]
  -f,--first-page <int>         first page to convert (default: 1)
  -l,--last-page <int>          last page to convert (default: 2147483647)
  --zoom <fp>                   zoom ratio
  --fit-width <fp>              fit width to <fp> pixels
  --fit-height <fp>             fit height to <fp> pixels
  --use-cropbox <int>           use CropBox instead of MediaBox (default: 1)
  --hdpi <fp>                   horizontal resolution for graphics in DPI (default: 144)
  --vdpi <fp>                   vertical resolution for graphics in DPI (default: 144)
  --embed <string>              specify which elements should be embedded into output
  --embed-css <int>             embed CSS files into output (default: 1)
  --embed-font <int>            embed font files into output (default: 1)
  --embed-image <int>           embed image files into output (default: 1)
  --embed-javascript <int>      embed JavaScript files into output (default: 1)
  --embed-outline <int>         embed outlines into output (default: 1)
  --split-pages <int>           split pages into separate files (default: 0)
  --dest-dir <string>           specify destination directory (default: ".")
  --css-filename <string>       filename of the generated css file (default: "")
  --page-filename <string>      filename template for split pages  (default: "")
  --outline-filename <string>   filename of the generated outline file (default: "")
  --process-nontext <int>       render graphics in addition to text (default: 1)
  --process-outline <int>       show outline in HTML (default: 1)
  --process-annotation <int>    show annotation in HTML (default: 0)
  --printing <int>              enable printing support (default: 1)
  --fallback <int>              output in fallback mode (default: 0)
  --tmp-file-size-limit <int>   Maximum size (in KB) used by temporary files, -1 for no limit. (default: -1)
  --embed-external-font <int>   embed local match for external fonts (default: 1)
  --font-format <string>        suffix for embedded font files (ttf,otf,woff,svg) (default: "woff")
  --decompose-ligature <int>    decompose ligatures, such as fi -> fi (default: 0)
  --auto-hint <int>             use fontforge autohint on fonts without hints (default: 0)
  --external-hint-tool <string> external tool for hinting fonts (overrides --auto-hint) (default: "")
  --stretch-narrow-glyph <int>  stretch narrow glyphs instead of padding them (default: 0)
  --squeeze-wide-glyph <int>    shrink wide glyphs instead of truncating them (default: 1)
  --override-fstype <int>       clear the fstype bits in TTF/OTF fonts (default: 0)
  --process-type3 <int>         convert Type 3 fonts for web (experimental) (default: 0)
  --heps <fp>                   horizontal threshold for merging text, in pixels (default: 1)
  --veps <fp>                   vertical threshold for merging text, in pixels (default: 1)
  --space-threshold <fp>        word break threshold (threshold * em) (default: 0.125)
  --font-size-multiplier <fp>   a value greater than 1 increases the rendering accuracy (default: 4)
  --space-as-offset <int>       treat space characters as offsets (default: 0)
  --tounicode <int>             how to handle ToUnicode CMaps (0=auto, 1=force, -1=ignore) (default: 0)
  --optimize-text <int>         try to reduce the number of HTML elements used for text (default: 0)
  --correct-text-visibility <int> try to detect texts covered by other graphics and properly arrange them (default: 0)
  --bg-format <string>          specify background image format (default: "png")
  --svg-node-count-limit <int>  if node count in a svg background image exceeds this limit, fall back this page to bitmap background; negative value means no limit. (default: -1)
  --svg-embed-bitmap <int>      1: embed bitmaps in svg background; 0: dump bitmaps to external files if possible. (default: 1)
  -o,--owner-password <string>  owner password (for encrypted files)
  -u,--user-password <string>   user password (for encrypted files)
  --no-drm <int>                override document DRM settings (default: 0)
  --clean-tmp <int>             remove temporary files after conversion (default: 1)
  --tmp-dir <string>            specify the location of temporary directory. (default: "/var/folders/20/tbf8_j6s33954cpxwrqft8sr0000gn/T/")
  --data-dir <string>           specify data directory (default: "/usr/local/Cellar/pdf2htmlex/0.12/share/pdf2htmlEX")
  --debug <int>                 print debugging information (default: 0)
  --proof <int>                 texts are drawn on both text layer and background for proof. (default: 0)
  -v,--version                  print copyright and version info
  -h,--help                     print usage information

Rubyから扱うには？

kristinというgemパッケージを用いると出来るようです。

  • kristin (Convert PDF docs to beautiful HTML files without losing text or format. This gem uses pdf2htmlEX to do the conversion.)
    https://github.com/ricn/kristin

Herokuで動かすには？

このbuildpackを用いると動きそうです。
https://github.com/rricard/heroku-buildpack-dpkg

但し、次のページにある最新のOverview of published packagesの内容に
heroku-buildpack-dpkg/test/Debfileを更新する必要がありそうです。
https://launchpad.net/~coolwanglu/+archive/ubuntu/pdf2htmlex

併せて読みたい

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