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43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
#ifndef __COMPARE_H
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#define __COMPARE_H
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/**
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* @file compare.h
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* @author Karim Vergnes <me@thesola.io>
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* @copyright GPLv2
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* @brief rsync-based diff calculator functions
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*
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* Generator functions to create a @ref umdiff_File object from computing the
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* difference between two files, using librsync algorithms.
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*/
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#include "umdiff.h"
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#include <stddef.h>
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/**
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* @brief Add commands from a rdiff stream.
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*
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* This function takes a buffer in the rdiff delta file format, and adds UMDiff
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* commands matching the parsed rdiff commands to the specified file.
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*
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* As it is intended to be called repeatedly, it will statefully alter the
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* provided @ref umdiff_File object as it goes.
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*/
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int
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umdiff_File_feedCommands(umdiff_File *file, char *buf, size_t len);
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/**
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* @brief Generate a UMDiff file from a source and target file contents.
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*
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* This function invokes a signature and delta job from librsync under the hood.
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* This is the optimum approach, as it includes our optimum parameters,
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* ensuring computed blocks line up with ISO9660 sectors.
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*/
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int
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umdiff_File_fromCompare(umdiff_File *file, int source_fd, int target_fd);
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#endif //__COMPARE_H
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// vim: ft=c.doxygen
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