如何在Perl中阅读和操作PDF 1.5文件？
[英]How can I read and manipulate PDF 1.5 files in Perl?
问题描述
There doesn't appear to be any Perl libraries that can open, manipulate, and re-save PDF documents that use the newer PDF version (1.5 and above I believe) that use a cross-reference stream rather than table. 
似乎没有任何Perl库可以打开，操作和重新保存使用交叉引用流而不是表格的较新PDF版本（我相信1.5及以上）的PDF文档。 Does anyone know of any unix/linux-based utilities to convert a PDF to an older version? 有没有人知道任何基于unix / linux的实用程序将PDF转换为旧版本？ Or perhaps there's a Perl module in CPAN I missed that can handle this? 或者也许在CPAN中有一个Perl模块我错过了可以处理这个问题？
2 个解决方案
解决方案1
14 2008-09-20 15:32:56
Done! 完成！ An hour ago, I uploaded CAM::PDF v1.50 to CPAN. 一小时前，我将CAM :: PDF v1.50上传到CPAN。 It now supports PDF v1.5 compressed object streams and cross-reference streams. 它现在支持PDF v1.5压缩对象流和交叉引用流。 I've tested it with a few PDF files that I found online, but I'd sure appreciate feedback (good or bad). 我用一些我在网上找到的PDF文件对它进行了测试，但我肯定会感谢反馈（好的或坏的）。
解决方案2
1 2008-09-18 13:18:42
I would try running it through ghostscript with appropriate parameters. 我会尝试使用适当的参数运行ghostscript。
Something like gs -dBATCH -dNOPAUSE -sDEVICE=pdfwriter -dCompatibilityLevel=1.2 类似于gs -dBATCH -dNOPAUSE -sDEVICE=pdfwriter -dCompatibilityLevel=1.2
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