/* * delta.h: private delta library things * * ==================================================================== * Copyright (c) 2000-2004 CollabNet. All rights reserved. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms * are also available at http://subversion.tigris.org/license-1.html. * If newer versions of this license are posted there, you may use a * newer version instead, at your option. * * This software consists of voluntary contributions made by many * individuals. For exact contribution history, see the revision * history and logs, available at http://subversion.tigris.org/. * ==================================================================== */ /* ==================================================================== */ #include <apr_pools.h> #include <apr_hash.h> #include "svn_delta.h" #ifndef SVN_LIBSVN_DELTA_H #define SVN_LIBSVN_DELTA_H #ifdef __cplusplus extern "C" { #endif /* __cplusplus */ /* Private interface for text deltas. */ /* The standard size of one svndiff window. */ #define SVN_DELTA_WINDOW_SIZE 102400 /* Context/baton for building an operation sequence. */ typedef struct svn_txdelta__ops_baton_t { int num_ops; /* current number of ops */ int src_ops; /* current number of source copy ops */ int ops_size; /* number of ops allocated */ svn_txdelta_op_t *ops; /* the operations */ svn_stringbuf_t *new_data; /* any new data used by the operations */ } svn_txdelta__ops_baton_t; /* Insert a delta op into the delta window being built via BUILD_BATON. If OPCODE is svn_delta_new, bytes from NEW_DATA are copied into the window data and OFFSET is ignored. Otherwise NEW_DATA is ignored. All allocations are performed in POOL. */ void svn_txdelta__insert_op(svn_txdelta__ops_baton_t *build_baton, enum svn_delta_action opcode, apr_size_t offset, apr_size_t length, const char *new_data, apr_pool_t *pool); /* Allocate a delta window from POOL. */ svn_txdelta_window_t * svn_txdelta__make_window(const svn_txdelta__ops_baton_t *build_baton, apr_pool_t *pool); /* Create xdelta window data. Allocate temporary data from POOL. */ void svn_txdelta__xdelta(svn_txdelta__ops_baton_t *build_baton, const char *start, apr_size_t source_len, apr_size_t target_len, apr_pool_t *pool); #ifdef __cplusplus } #endif /* __cplusplus */ #endif /* SVN_LIBSVN_DELTA_H */