upstream/mercurial-mirror Files · mercurial/bdiff.h

revlog: move censor logic out of censor extension...

revlog: move censor logic out of censor extension The censor extension is doing very low-level things with revlogs. It is fundamentally impossible for this logic to remain in the censor extension while support multiple storage backends: we need each storage backend to implement censor in its own storage-specific way. This commit effectively moves the revlog-specific censoring code to be a method of revlogs themselves. We've defined a new API on the file storage interface for censoring an individual node. Even though the current censoring code doesn't use it, the API requires a transaction instance because it logically makes sense for storage backends to require an active transaction (which implies a held write lock) in order to rewrite storage. After this commit, the censor extension has been reduced to boilerplate precondition checking before invoking the generic storage API. I tried to keep the code as similar as possible. But some minor changes were made: * We use self._io instead of instantiating a new revlogio instance. * We compare self.version against REVLOGV0 instead of != REVLOGV1 because presumably all future revlog versions will support censoring. * We use self.opener instead of going through repo.svfs (we don't have a handle on the repo instance from a revlog). * "revlog" dropped * Replace "flog" with "self". Differential Revision: https://phab.mercurial-scm.org/D4656

Yuya Nishihara - - Load All Authors

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        Maciej Fijalkowski
    
bdiff: split bdiff into cpy-aware and cpy-agnostic part

              r29541
            
      #ifndef _HG_BDIFF_H_

      #define _HG_BDIFF_H_

        Yuya Nishihara
    
bdiff: include compat.h in header to define ssize_t...

              r34653
            
      #include "compat.h"

        Maciej Fijalkowski
    
bdiff: split bdiff into cpy-aware and cpy-agnostic part

              r29541
            
      struct bdiff_line {

      	int hash, n, e;

      	ssize_t len;

      	const char *l;

      };

      struct bdiff_hunk;

      struct bdiff_hunk {

      	int a1, a2, b1, b2;

      	struct bdiff_hunk *next;

      };

      int bdiff_splitlines(const char *a, ssize_t len, struct bdiff_line **lr);

      int bdiff_diff(struct bdiff_line *a, int an, struct bdiff_line *b, int bn,

        Augie Fackler
    
bdiff: format header file with clang-format...

              r34628
            
                     struct bdiff_hunk *base);

        Maciej Fijalkowski
    
bdiff: split bdiff into cpy-aware and cpy-agnostic part

              r29541
            
      void bdiff_freehunks(struct bdiff_hunk *l);

      #endif

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Maciej Fijalkowski bdiff: split bdiff into cpy-aware and cpy-agnostic part	r29541	#ifndef _HG_BDIFF_H_
		#define _HG_BDIFF_H_

Yuya Nishihara bdiff: include compat.h in header to define ssize_t...	r34653	#include "compat.h"

Maciej Fijalkowski bdiff: split bdiff into cpy-aware and cpy-agnostic part	r29541	struct bdiff_line {
		int hash, n, e;
		ssize_t len;
		const char *l;
		};

		struct bdiff_hunk;
		struct bdiff_hunk {
		int a1, a2, b1, b2;
		struct bdiff_hunk *next;
		};

		int bdiff_splitlines(const char a, ssize_t len, struct bdiff_line *lr);
		int bdiff_diff(struct bdiff_line a, int an, struct bdiff_line b, int bn,
Augie Fackler bdiff: format header file with clang-format...	r34628	struct bdiff_hunk *base);
Maciej Fijalkowski bdiff: split bdiff into cpy-aware and cpy-agnostic part	r29541	void bdiff_freehunks(struct bdiff_hunk *l);

		#endif