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git/vcs-svn/fast_export.h

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Infrastructure to write revisions in fast-export format repo_tree maintains the exporter's state and provides a facility to to call fast_export, which writes objects to stdout suitable for consumption by fast-import. The exported functions roughly correspond to Subversion FS operations. . repo_add, repo_modify, repo_copy, repo_replace, and repo_delete update the current commit, based roughly on the corresponding Subversion FS operation. . repo_commit calls out to fast_export to write the current commit to the fast-import stream in stdout. . repo_diff is used by the fast_export module to write the changes for a commit. . repo_reset erases the exporter's state, so valgrind can be happy. [rr: squelched compiler warnings] [jn: removed support for maintaining state on-disk, though we may want to add it back later] Signed-off-by: David Barr <david.barr@cordelta.com> Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-10 00:48:10 +02:00
#ifndef FAST_EXPORT_H_
#define FAST_EXPORT_H_
vcs-svn: eliminate repo_tree structure Rely on fast-import for information about previous revs. This requires always setting up backward flow of information, even for v2 dumps. On the plus side, it simplifies the code by quite a bit and opens the door to further simplifications. [db: adjusted to support final version of the cat-blob patch] [jn: avoiding hard-coding git's name for the empty tree for portability to other backends] Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: David Barr <david.barr@cordelta.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
2010-12-10 11:00:55 +01:00
struct strbuf;
struct line_buffer;
vcs-svn: teach line_buffer to handle multiple input files Collect the line_buffer state in a newly public line_buffer struct. Callers can use multiple line_buffers to manage input from multiple files at a time. svn-fe's delta applier will use this to stream a delta from svnrdump and the preimage it applies to from fast-import at the same time. The tests don't take advantage of the new features, but I think that's okay. It is easier to find lingering examples of nonreentrant code by searching for "static" in line_buffer.c. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
2010-10-11 04:41:06 +02:00
vcs-svn: set up channel to read fast-import cat-blob response Set up some plumbing: teach the svndump lib to pass a file descriptor number to the fast_export lib, representing where cat-blob/ls responses can be read from, and add a get_response_line helper function to the fast_export lib to read a line from that file. Unfortunately this means that svn-fe needs file descriptor 3 to be redirected from somewhere (preferrably the cat-blob stream of a fast-import backend); otherwise it will fail: $ svndump <path> | svn-fe fatal: cannot read from file descriptor 3: Bad file descriptor For the moment, "svn-fe 3</dev/null" works as a workaround but it will not work for very long. A fast-import backend that can retrieve old commits is needed in order to be able to fulfill svn "Node-copyfrom-rev" requests that refer to revs from a previous run. [jn: with new change description] Based-on-patch-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: David Barr <david.barr@cordelta.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
2011-03-05 03:30:23 +01:00
void fast_export_init(int fd);
void fast_export_deinit(void);
void fast_export_reset(void);
vcs-svn: eliminate repo_tree structure Rely on fast-import for information about previous revs. This requires always setting up backward flow of information, even for v2 dumps. On the plus side, it simplifies the code by quite a bit and opens the door to further simplifications. [db: adjusted to support final version of the cat-blob patch] [jn: avoiding hard-coding git's name for the empty tree for portability to other backends] Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: David Barr <david.barr@cordelta.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
2010-12-10 11:00:55 +01:00
void fast_export_delete(uint32_t depth, const uint32_t *path);
void fast_export_modify(uint32_t depth, const uint32_t *path,
uint32_t mode, const char *dataref);
Merge branch 'db/strbufs-for-metadata' into db/svn-fe-code-purge * db/strbufs-for-metadata: vcs-svn: use strbuf for author, UUID, and URL vcs-svn: use strbuf for revision log Conflicts: vcs-svn/fast_export.c vcs-svn/fast_export.h vcs-svn/repo_tree.c vcs-svn/svndump.c
2011-03-23 00:19:46 +01:00
void fast_export_begin_commit(uint32_t revision, const char *author, char *log,
vcs-svn: use strbuf for author, UUID, and URL Use strbufs and strings instead of interned strings for values of rev, dump, and node fields that happen to be strings. After this change, the only remaining string_pool use is for paths in the repo_tree API and internals. Functional change: treat an empty author, UUID, or URL as none at all. So for example, in repos where the first revision has an empty svn:author property, the first rev will be treated as by "nobody" rather than by a person with empty name and email address created by prepending an @ sign to the repository UUID. Signed-off-by: David Barr <david.barr@cordelta.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
2011-03-22 23:52:17 +01:00
const char *uuid, const char *url,
unsigned long timestamp);
vcs-svn: eliminate repo_tree structure Rely on fast-import for information about previous revs. This requires always setting up backward flow of information, even for v2 dumps. On the plus side, it simplifies the code by quite a bit and opens the door to further simplifications. [db: adjusted to support final version of the cat-blob patch] [jn: avoiding hard-coding git's name for the empty tree for portability to other backends] Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: David Barr <david.barr@cordelta.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
2010-12-10 11:00:55 +01:00
void fast_export_end_commit(uint32_t revision);
void fast_export_data(uint32_t mode, uint32_t len, struct line_buffer *input);
/* If there is no such file at that rev, returns -1, errno == ENOENT. */
int fast_export_ls_rev(uint32_t rev, uint32_t depth, const uint32_t *path,
uint32_t *mode_out, struct strbuf *dataref_out);
int fast_export_ls(uint32_t depth, const uint32_t *path,
uint32_t *mode_out, struct strbuf *dataref_out);
Infrastructure to write revisions in fast-export format repo_tree maintains the exporter's state and provides a facility to to call fast_export, which writes objects to stdout suitable for consumption by fast-import. The exported functions roughly correspond to Subversion FS operations. . repo_add, repo_modify, repo_copy, repo_replace, and repo_delete update the current commit, based roughly on the corresponding Subversion FS operation. . repo_commit calls out to fast_export to write the current commit to the fast-import stream in stdout. . repo_diff is used by the fast_export module to write the changes for a commit. . repo_reset erases the exporter's state, so valgrind can be happy. [rr: squelched compiler warnings] [jn: removed support for maintaining state on-disk, though we may want to add it back later] Signed-off-by: David Barr <david.barr@cordelta.com> Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-10 00:48:10 +02:00
#endif
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