是否可以使用Ruby将一系列PDF合并为一个? [英] Is it possible to combine a series of PDFs into one using Ruby?
问题描述
我有一系列依次命名的PDF，如下所示:
I have a series of PDFs named sequentially like so:
- 01_foo.pdf
- 02_bar.pdf
- 03_baz.pdf
- 等
使用Ruby，是否有可能在将它们按顺序排列的同时将它们组合成一个大PDF?我不介意安装任何必要的宝石来完成这项工作.
Using Ruby, is it possible to combine these into one big PDF while keeping them in sequence? I don't mind installing any necessary gems to do the job.
如果在Ruby中无法做到这一点，那么另一种语言呢?如果可能的话，没有商业组件.
If this isn't possible in Ruby, how about another language? No commercial components, if possible.
Update: Jason Navarrete's suggestion lead to the perfect solution:
将需要合并的PDF文件与 pdftk 一起放置在目录中(或确保pdftk在您的PATH中)，然后运行以下脚本:
Place the PDF files needing to be combined in a directory along with pdftk (or make sure pdftk is in your PATH), then run the following script:
pdfs = Dir["[0-9][0-9]_*"].sort.join(" ")
`pdftk #{pdfs} output combined.pdf`
或者我甚至可以在命令行中以单行代码的方式完成此操作:
Or I could even do it as a one-liner from the command-line:
ruby -e '`pdftk #{Dir["[0-9][0-9]_*"].sort.join(" ")} output combined.pdf`'
很棒的建议杰森，完美的解决方案，谢谢. 给他一个投票赞成的人.
Great suggestion Jason, perfect solution, thanks. Give him an up-vote people.
推荐答案
A Ruby-Talk 帖子建议使用 pdftk 工具包合并PDF.
A Ruby-Talk post suggests using the pdftk toolkit to merge the PDFs.
将 pdftk 作为外部过程进行调用并使其处理合并应该相对简单. PDF :: Writer 可能会过大，因为您要完成的只是一个简单的附加操作.
It should be relatively straightforward to call pdftk as an external process and have it handle the merging. PDF::Writer may be overkill because all you're looking to accomplish is a simple append.
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