fb16dfecae
Commit b7f05445c0 has added WWW entries to port Makefiles based on
WWW: lines in pkg-descr files.
This commit removes the WWW: lines of moved-over URLs from these
pkg-descr files.
Approved by: portmgr (tcberner)
13 lines
973 B
Text
13 lines
973 B
Text
The LibXDiff library implements basic and yet complete functionalities to
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create file differences/patches to both binary and text files. The library
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uses memory files as file abstraction to achieve both performance and
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portability. For binary files, LibXDiff implements (with some modification)
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the algorithm described in File System Support for Delta Compression by
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Joshua P. MacDonald, while for text files it follows directives described in
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An O(ND) Difference Algorithm and Its Variations by Eugene W. Myers. Memory
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files used by the library are basically a collection of buffers that store the
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file content. There are two different requirements for memory files when passed
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to diff/patch functions. Text files for diff/patch functions require that a
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single line do not have to spawn across two different memory file blocks.
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Binary diff/patch functions require memory files to be compact. A compact
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memory files is a file whose content is stored inside a single block.
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