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Posted to dev@subversion.apache.org by Prabhu Gnana Sundar <pr...@collab.net> on 2010/11/29 08:13:20 UTC
[PATCH] enhance "svn diff" by adding "--diff-copy-from" switch
Hi,
This patch enhances the current "svn diff" by adding a new
"--diff-copy-from" switch. I have attached the patch and the log message
along with this mail. Please review and share your comments on the same.
I am resending this patch with the extension added to the log and the
patch files.
Regards
Prabhu
Re: [PATCH] enhance "svn diff" by adding "--diff-copy-from" switch
Posted by Stefan Sperling <st...@elego.de>.
On Mon, Nov 29, 2010 at 01:43:20PM +0530, Prabhu Gnana Sundar wrote:
> Hi,
>
> This patch enhances the current "svn diff" by adding a new
> "--diff-copy-from" switch. I have attached the patch and the log message
> along with this mail. Please review and share your comments on the same.
>
> I am resending this patch with the extension added to the log and the
> patch files.
>
> Regards
> Prabhu
Hi Prabhu,
very impressive patch!
I haven't tested it. But I've read over it and added a couple of remarks
below.
> Index: subversion/libsvn_ra/deprecated.c
> ===================================================================
> --- subversion/libsvn_ra/deprecated.c (revision 1038978)
> +++ subversion/libsvn_ra/deprecated.c (working copy)
> @@ -248,6 +248,31 @@
> keep_locks, pool);
> }
>
> +svn_error_t *svn_ra_do_diff3(svn_ra_session_t *session,
> + const svn_ra_reporter3_t **reporter,
> + void **report_baton,
> + svn_revnum_t revision,
> + const char *diff_target,
> + svn_depth_t depth,
> + svn_boolean_t ignore_ancestry,
> + svn_boolean_t text_deltas,
> + const char *versus_url,
> + const svn_delta_editor_t *diff_editor,
> + void *diff_baton,
> + apr_pool_t *pool)
> +{
> + SVN_ERR_ASSERT(svn_path_is_empty(diff_target)
> + || svn_path_is_single_path_component(diff_target));
> + return session->vtable->do_diff(session,
> + reporter, report_baton,
> + revision, diff_target,
> + depth, ignore_ancestry,
> + text_deltas, FALSE /* diff copy from */,
> + versus_url, diff_editor,
> + diff_baton, pool);
> +}
> +
> +
> svn_error_t *svn_ra_do_diff2(svn_ra_session_t *session,
> const svn_ra_reporter2_t **reporter,
> void **report_baton,
> @@ -270,8 +295,8 @@
> &(b->reporter3), &(b->reporter3_baton),
> revision, diff_target,
> SVN_DEPTH_INFINITY_OR_FILES(recurse),
> - ignore_ancestry, text_deltas, versus_url,
> - diff_editor, diff_baton, pool);
> + ignore_ancestry, text_deltas, FALSE,
> + versus_url, diff_editor, diff_baton, pool);
> }
>
> svn_error_t *svn_ra_do_diff(svn_ra_session_t *session,
> Index: subversion/libsvn_ra/wrapper_template.h
> ===================================================================
> --- subversion/libsvn_ra/wrapper_template.h (revision 1038978)
> +++ subversion/libsvn_ra/wrapper_template.h (working copy)
> @@ -361,7 +361,7 @@
> svn_depth_t depth = SVN_DEPTH_INFINITY_OR_FILES(recurse);
>
> SVN_ERR(VTBL.do_diff(session_baton, &reporter3, &baton3, revision,
> - diff_target, depth, ignore_ancestry, TRUE,
> + diff_target, depth, ignore_ancestry, TRUE, FALSE,
> versus_url, diff_editor, diff_baton, pool));
>
> compat_wrap_reporter(reporter, report_baton, reporter3, baton3, pool);
> Index: subversion/libsvn_ra/ra_loader.c
> ===================================================================
> --- subversion/libsvn_ra/ra_loader.c (revision 1038978)
> +++ subversion/libsvn_ra/ra_loader.c (working copy)
> @@ -845,7 +845,7 @@
> status_editor, status_baton, pool);
> }
>
> -svn_error_t *svn_ra_do_diff3(svn_ra_session_t *session,
> +svn_error_t *svn_ra_do_diff4(svn_ra_session_t *session,
> const svn_ra_reporter3_t **reporter,
> void **report_baton,
> svn_revnum_t revision,
> @@ -853,6 +853,7 @@
> svn_depth_t depth,
> svn_boolean_t ignore_ancestry,
> svn_boolean_t text_deltas,
> + svn_boolean_t diff_copy_from,
> const char *versus_url,
> const svn_delta_editor_t *diff_editor,
> void *diff_baton,
> @@ -864,7 +865,8 @@
> reporter, report_baton,
> revision, diff_target,
> depth, ignore_ancestry,
> - text_deltas, versus_url, diff_editor,
> + text_deltas, diff_copy_from,
> + versus_url, diff_editor,
> diff_baton, pool);
> }
>
> Index: subversion/libsvn_ra/ra_loader.h
> ===================================================================
> --- subversion/libsvn_ra/ra_loader.h (revision 1038978)
> +++ subversion/libsvn_ra/ra_loader.h (working copy)
> @@ -159,10 +159,12 @@
> svn_depth_t depth,
> svn_boolean_t ignore_ancestry,
> svn_boolean_t text_deltas,
> + svn_boolean_t diff_copy_from,
> const char *versus_url,
> const svn_delta_editor_t *diff_editor,
> void *diff_baton,
> apr_pool_t *pool);
> +
> svn_error_t *(*get_log)(svn_ra_session_t *session,
> const apr_array_header_t *paths,
> svn_revnum_t start,
> Index: subversion/libsvn_ra_local/ra_plugin.c
> ===================================================================
> --- subversion/libsvn_ra_local/ra_plugin.c (revision 1038978)
> +++ subversion/libsvn_ra_local/ra_plugin.c (working copy)
> @@ -819,6 +819,7 @@
> svn_depth_t depth,
> svn_boolean_t ignore_ancestry,
> svn_boolean_t text_deltas,
> + svn_boolean_t diff_copy_from,
> const char *switch_url,
> const svn_delta_editor_t *update_editor,
> void *update_baton,
> @@ -832,7 +833,7 @@
> switch_url,
> text_deltas,
> depth,
> - FALSE,
> + diff_copy_from ? TRUE : FALSE,
> ignore_ancestry,
> update_editor,
> update_baton,
> Index: subversion/libsvn_ra_svn/client.c
> ===================================================================
> --- subversion/libsvn_ra_svn/client.c (revision 1038978)
> +++ subversion/libsvn_ra_svn/client.c (working copy)
> @@ -1316,6 +1316,7 @@
> svn_depth_t depth,
> svn_boolean_t ignore_ancestry,
> svn_boolean_t text_deltas,
> + svn_boolean_t diff_copy_from,
> const char *versus_url,
> const svn_delta_editor_t *diff_editor,
> void *diff_baton, apr_pool_t *pool)
> @@ -1325,10 +1326,10 @@
> svn_boolean_t recurse = DEPTH_TO_RECURSE(depth);
>
> /* Tell the server we want to start a diff. */
> - SVN_ERR(svn_ra_svn_write_cmd(conn, pool, "diff", "(?r)cbbcbw", rev,
> + SVN_ERR(svn_ra_svn_write_cmd(conn, pool, "diff", "(?r)cbbcbwb", rev,
> target, recurse, ignore_ancestry,
> versus_url, text_deltas,
> - svn_depth_to_word(depth)));
> + svn_depth_to_word(depth), diff_copy_from));
> SVN_ERR(handle_auth_request(sess_baton, pool));
>
> /* Fetch a reporter for the caller to drive. The reporter will drive
> Index: subversion/svn/cl.h
> ===================================================================
> --- subversion/svn/cl.h (revision 1038978)
> +++ subversion/svn/cl.h (working copy)
> @@ -184,6 +184,7 @@
> svn_boolean_t no_ignore; /* disregard default ignores & svn:ignore's */
> svn_boolean_t no_auth_cache; /* do not cache authentication information */
> svn_boolean_t no_diff_deleted; /* do not show diffs for deleted files */
> + svn_boolean_t diff_copy_from; /* diff from the source */
> svn_boolean_t show_copies_as_adds; /* do not diff copies with their source */
> svn_boolean_t notice_ancestry; /* notice ancestry for diff-y operations */
> svn_boolean_t ignore_ancestry; /* ignore ancestry for merge-y operations */
> Index: subversion/svn/diff-cmd.c
> ===================================================================
> --- subversion/svn/diff-cmd.c (revision 1038978)
> +++ subversion/svn/diff-cmd.c (working copy)
> @@ -347,6 +347,7 @@
> opt_state->depth,
> ! opt_state->notice_ancestry,
> opt_state->no_diff_deleted,
> + opt_state->diff_copy_from,
> opt_state->show_copies_as_adds,
> opt_state->force,
> opt_state->use_git_diff_format,
> @@ -392,6 +393,7 @@
> opt_state->depth,
> ! opt_state->notice_ancestry,
> opt_state->no_diff_deleted,
> + opt_state->diff_copy_from,
> opt_state->show_copies_as_adds,
> opt_state->force,
> opt_state->use_git_diff_format,
> Index: subversion/svn/log-cmd.c
> ===================================================================
> --- subversion/svn/log-cmd.c (revision 1038978)
> +++ subversion/svn/log-cmd.c (working copy)
> @@ -303,6 +303,7 @@
> svn_depth_infinity,
> FALSE, /* ignore ancestry */
> TRUE, /* no diff deleted */
> + FALSE, /* diff copy from */
> FALSE, /* show copies as adds */
> FALSE, /* ignore content type */
> FALSE, /* use git diff format */
> @@ -336,6 +337,7 @@
> svn_depth_infinity,
> FALSE, /* ignore ancestry */
> TRUE, /* no diff deleted */
> + FALSE, /* diff copy from */
> FALSE, /* show copies as adds */
> FALSE, /* ignore content type */
> FALSE, /* use git diff format */
> Index: subversion/svn/main.c
> ===================================================================
> --- subversion/svn/main.c (revision 1038978)
> +++ subversion/svn/main.c (working copy)
> @@ -88,6 +88,7 @@
> opt_no_auth_cache,
> opt_no_autoprops,
> opt_no_diff_deleted,
> + opt_diff_copy_from,
> opt_no_ignore,
> opt_no_unlock,
> opt_non_interactive,
> @@ -232,6 +233,8 @@
> N_("try operation but make no changes")},
> {"no-diff-deleted", opt_no_diff_deleted, 0,
> N_("do not print differences for deleted files")},
> + {"diff-copy-from", opt_diff_copy_from, 0,
> + N_("print copy history of files")},
Maybe say N_("diff copied files against their source") or
N_("follow copy history of files")?
> {"notice-ancestry", opt_notice_ancestry, 0,
> N_("notice ancestry when calculating differences")},
> {"ignore-ancestry", opt_ignore_ancestry, 0,
> @@ -352,6 +355,7 @@
> {"nac", opt_no_auth_cache, 0, NULL},
> {"dry", opt_dry_run, 0, NULL},
> {"ndd", opt_no_diff_deleted, 0, NULL},
> + {"dcf", opt_diff_copy_from, 0, NULL},
> {"na", opt_notice_ancestry, 0, NULL},
> {"ia", opt_ignore_ancestry, 0, NULL},
> {"ie", opt_ignore_externals, 0, NULL},
> @@ -543,8 +547,9 @@
> "\n"
> " Use just 'svn diff' to display local modifications in a working copy.\n"),
> {'r', 'c', opt_old_cmd, opt_new_cmd, 'N', opt_depth, opt_diff_cmd,
> - opt_internal_diff, 'x', opt_no_diff_deleted, opt_show_copies_as_adds,
> - opt_notice_ancestry, opt_summarize, opt_changelist, opt_force, opt_xml,
> + opt_internal_diff, 'x', opt_no_diff_deleted, opt_diff_copy_from,
> + opt_show_copies_as_adds, opt_notice_ancestry, opt_summarize,
> + opt_changelist, opt_force, opt_xml,
> opt_use_git_diff_format} },
> { "export", svn_cl__export, {0}, N_
> ("Create an unversioned copy of a tree.\n"
> @@ -1624,6 +1629,9 @@
> case opt_no_diff_deleted:
> opt_state.no_diff_deleted = TRUE;
> break;
> + case opt_diff_copy_from:
> + opt_state.diff_copy_from = TRUE;
> + break;
> case opt_show_copies_as_adds:
> opt_state.show_copies_as_adds = TRUE;
> break;
> Index: subversion/include/svn_client.h
> ===================================================================
> --- subversion/include/svn_client.h (revision 1038978)
> +++ subversion/include/svn_client.h (working copy)
> @@ -2633,6 +2633,9 @@
> *
> * If @a no_diff_deleted is TRUE, then no diff output will be
> * generated on deleted files.
> + *
> + * If @a diff_copy_from is TRUE, then the diff output will be generated
> + * with respect to the copy-source.
Maybe say:
* If @a diff_copy_from is TRUE, diff copied files against the copyfrom
* source, instead of diffing against the history of the file's path.
> *
> * If @a show_copies_as_adds is TRUE, then copied files will not be diffed
> * against their copyfrom source, and will appear in the diff output
> @@ -2684,6 +2687,7 @@
> svn_depth_t depth,
> svn_boolean_t ignore_ancestry,
> svn_boolean_t no_diff_deleted,
> + svn_boolean_t diff_copy_from,
> svn_boolean_t show_copies_as_adds,
> svn_boolean_t ignore_content_type,
> svn_boolean_t use_git_diff_format,
> @@ -2797,6 +2801,9 @@
> * changed between @a start_revision and @a end_revision. @a path can
> * be either a working-copy path or URL.
> *
> + * If @a diff_copy_from is TRUE, then the diff output will be generated
> + * with respect to the copy-source.
> + *
See above.
> * If @a peg_revision is #svn_opt_revision_unspecified, behave
> * identically to svn_client_diff5(), using @a path for both of that
> * function's @a path1 and @a path2 argments.
> @@ -2815,6 +2822,7 @@
> svn_depth_t depth,
> svn_boolean_t ignore_ancestry,
> svn_boolean_t no_diff_deleted,
> + svn_boolean_t diff_copy_from,
> svn_boolean_t show_copies_as_adds,
> svn_boolean_t ignore_content_type,
> svn_boolean_t use_git_diff_format,
> Index: subversion/include/svn_ra.h
> ===================================================================
> --- subversion/include/svn_ra.h (revision 1038978)
> +++ subversion/include/svn_ra.h (working copy)
> @@ -1336,6 +1336,8 @@
> * handler returned by apply_textdelta will be called once with a NULL
> * @c svn_txdelta_window_t pointer.
> *
> + * Pass TRUE to @a diff_copy_from to do the diff against the copy-source.
> + *
> * Use @a pool for memory allocation.
> *
> * @note The reporter provided by this function does NOT supply copy-
> @@ -1345,10 +1347,10 @@
> * needed, and sending too much data back, a pre-1.5 'recurse'
> * directive may be sent to the server, based on @a depth.
> *
> - * @since New in 1.5.
> + * @since New in 1.7.
> */
> svn_error_t *
> -svn_ra_do_diff3(svn_ra_session_t *session,
> +svn_ra_do_diff4(svn_ra_session_t *session,
> const svn_ra_reporter3_t **reporter,
> void **report_baton,
> svn_revnum_t revision,
> @@ -1356,12 +1358,35 @@
> svn_depth_t depth,
> svn_boolean_t ignore_ancestry,
> svn_boolean_t text_deltas,
> + svn_boolean_t diff_copy_from,
> const char *versus_url,
> const svn_delta_editor_t *diff_editor,
> void *diff_baton,
> apr_pool_t *pool);
>
> /**
> + * Similar to svn_ra_do_diff4(), but not taking the @a diff_copy_from
> + * option, hence passing FALSE.
> + *
> + * New code should use svn_ra_do_diff4().
> + *
> + * @deprecated Provided for compatibility with the 1.5 API.
> + */
> +SVN_DEPRECATED
> +svn_error_t *
> +svn_ra_do_diff3(svn_ra_session_t *session,
> + const svn_ra_reporter3_t **reporter,
> + void **report_baton,
> + svn_revnum_t revision,
> + const char *diff_target,
> + svn_depth_t depth,
> + svn_boolean_t ignore_ancestry,
> + svn_boolean_t text_deltas,
> + const char *versus_url,
> + const svn_delta_editor_t *diff_editor,
> + void *diff_baton,
> + apr_pool_t *pool);
> +/**
> * Similar to svn_ra_do_diff3(), but taking @c svn_ra_reporter2_t
> * instead of @c svn_ra_reporter3_t, and therefore only able to report
> * @c svn_depth_infinity for depths. Perform the diff according to
> Index: subversion/libsvn_client/deprecated.c
> ===================================================================
> --- subversion/libsvn_client/deprecated.c (revision 1038978)
> +++ subversion/libsvn_client/deprecated.c (working copy)
> @@ -785,7 +785,7 @@
> {
> return svn_client_diff5(options, path1, revision1, path2,
> revision2, relative_to_dir, depth,
> - ignore_ancestry, no_diff_deleted, FALSE,
> + ignore_ancestry, no_diff_deleted, FALSE, FALSE,
> FALSE, ignore_content_type, header_encoding,
> outfile, errfile, changelists, ctx, pool);
> }
> @@ -883,6 +883,7 @@
> no_diff_deleted,
> FALSE,
> FALSE,
> + FALSE,
> ignore_content_type,
> header_encoding,
> outfile,
> Index: subversion/libsvn_client/repos_diff.c
> ===================================================================
> --- subversion/libsvn_client/repos_diff.c (revision 1038978)
> +++ subversion/libsvn_client/repos_diff.c (working copy)
> @@ -93,6 +93,9 @@
> FALSE otherwise. */
> svn_boolean_t walk_deleted_repos_dirs;
>
> + /* TRUE if diff has to be made against the copy source. */
> + svn_boolean_t diff_copy_from;
> +
> /* A callback used to see if the client wishes to cancel the running
> operation. */
> svn_cancel_func_t cancel_func;
> @@ -198,6 +201,9 @@
> /* A cache of any property changes (svn_prop_t) received for this file. */
> apr_array_header_t *propchanges;
>
> + /* The copyfrom_revision */
The above comment just repeats the variable name.
This comment is not terribly important because the variable name has
a clear meaning, but maybe say:
/* The copyfrom revision. */
> + svn_revnum_t copyfrom_revision;
> +
> /* The pool passed in by add_file or open_file.
> Also, the pool this file_baton is allocated in. */
> apr_pool_t *pool;
> @@ -308,7 +314,9 @@
> * the file.
> */
> static svn_error_t *
> -get_file_from_ra(struct file_baton *b, svn_revnum_t revision)
> +get_file_from_ra(struct file_baton *b,
> + const char *path,
> + svn_revnum_t revision)
> {
> svn_stream_t *fstream;
>
> @@ -317,7 +325,7 @@
> b->pool));
>
> SVN_ERR(svn_ra_get_file(b->edit_baton->ra_session,
> - b->path,
> + path,
> revision,
> fstream, NULL,
> &(b->pristine_props),
> @@ -508,7 +516,7 @@
>
> /* Compare a file being deleted against an empty file */
> b = make_file_baton(path, FALSE, eb, iterpool);
> - SVN_ERR(get_file_from_ra(b, revision));
> + SVN_ERR(get_file_from_ra(b, path, revision));
>
> SVN_ERR(get_empty_file(b->edit_baton, &(b->path_end_revision)));
>
> @@ -573,7 +581,7 @@
>
> /* Compare a file being deleted against an empty file */
> b = make_file_baton(path, FALSE, eb, pool);
> - SVN_ERR(get_file_from_ra(b, eb->revision));
> + SVN_ERR(get_file_from_ra(b, path, eb->revision));
> SVN_ERR(get_empty_file(b->edit_baton, &(b->path_end_revision)));
>
> get_file_mime_types(&mimetype1, &mimetype2, b);
> @@ -791,8 +799,6 @@
> struct dir_baton *pb = parent_baton;
> struct file_baton *b;
>
> - /* ### TODO: support copyfrom? */
> -
> b = make_file_baton(path, TRUE, pb->edit_baton, pool);
> *file_baton = b;
>
> @@ -804,8 +810,28 @@
> return SVN_NO_ERROR;
> }
>
> - SVN_ERR(get_empty_file(b->edit_baton, &(b->path_start_revision)));
> - b->pristine_props = pb->edit_baton->empty_hash;
> + if(pb->edit_baton->diff_copy_from && SVN_IS_VALID_REVNUM(copyfrom_revision))
> + {
> + const char *preserved_url;
> + const char *repos_root;
> + b->copyfrom_revision = copyfrom_revision;
> + SVN_ERR(svn_ra_get_session_url(pb->edit_baton->ra_session,
> + &preserved_url,
> + pool));
> + SVN_ERR(svn_ra_get_repos_root2(pb->edit_baton->ra_session,
> + &repos_root,
> + pool));
> + SVN_ERR(svn_ra_reparent(pb->edit_baton->ra_session, repos_root,
> + pool));
Reparenting can fail due to authz restrictions.
Please catch related errors (see subversion/svn/log-cmd.c for an example).
Maybe even add a regression test that makes sure this feature can cope with
copyfrom paths that aren't accessible due to authz restrictions.
> + SVN_ERR(get_file_from_ra(b, copyfrom_path+1, copyfrom_revision));
> + SVN_ERR(svn_ra_reparent(pb->edit_baton->ra_session,
> + preserved_url, pool));
> + }
> + else
> + {
> + SVN_ERR(get_empty_file(b->edit_baton, &(b->path_start_revision)));
> + b->pristine_props = pb->edit_baton->empty_hash;
> + }
>
> return SVN_NO_ERROR;
> }
> @@ -831,7 +857,7 @@
> return SVN_NO_ERROR;
> }
>
> - SVN_ERR(get_file_from_ra(b, base_revision));
> + SVN_ERR(get_file_from_ra(b, path, base_revision));
>
> return SVN_NO_ERROR;
> }
> @@ -962,7 +988,7 @@
> const char *mimetype1, *mimetype2;
> get_file_mime_types(&mimetype1, &mimetype2, b);
>
> - if (b->added)
> + if (b->added && !eb->diff_copy_from)
> SVN_ERR(eb->diff_callbacks->file_added
> (local_dir_abspath, &content_state, &prop_state, &b->tree_conflicted,
> b->wcpath,
> @@ -981,7 +1007,7 @@
> &b->tree_conflicted, b->wcpath,
> b->path_end_revision ? b->path_start_revision : NULL,
> b->path_end_revision,
> - b->edit_baton->revision,
> + eb->diff_copy_from ? b->copyfrom_revision : b->edit_baton->revision,
> b->edit_baton->target_revision,
> mimetype1, mimetype2,
> b->propchanges, b->pristine_props,
> @@ -1297,6 +1323,7 @@
> svn_revnum_t revision,
> svn_wc_notify_func2_t notify_func,
> void *notify_baton,
> + svn_boolean_t diff_copy_from,
> svn_cancel_func_t cancel_func,
> void *cancel_baton,
> const svn_delta_editor_t **editor,
> @@ -1323,6 +1350,7 @@
> eb->notify_func = notify_func;
> eb->notify_baton = notify_baton;
> eb->walk_deleted_repos_dirs = TRUE;
> + eb->diff_copy_from = diff_copy_from;
> eb->cancel_func = cancel_func;
> eb->cancel_baton = cancel_baton;
>
> Index: subversion/libsvn_client/client.h
> ===================================================================
> --- subversion/libsvn_client/client.h (revision 1038978)
> +++ subversion/libsvn_client/client.h (working copy)
> @@ -644,6 +644,7 @@
> svn_revnum_t revision,
> svn_wc_notify_func2_t notify_func,
> void *notify_baton,
> + svn_boolean_t diff_copy_from,
> svn_cancel_func_t cancel_func,
> void *cancel_baton,
> const svn_delta_editor_t **editor,
> Index: subversion/libsvn_client/merge.c
> ===================================================================
> --- subversion/libsvn_client/merge.c (revision 1038978)
> +++ subversion/libsvn_client/merge.c (working copy)
> @@ -5052,14 +5052,14 @@
> merge_b->dry_run,
> merge_b->ra_session2, revision1,
> notification_receiver, notify_b,
> - merge_b->ctx->cancel_func,
> + FALSE, merge_b->ctx->cancel_func,
> merge_b->ctx->cancel_baton,
> &diff_editor, &diff_edit_baton,
> pool));
> - SVN_ERR(svn_ra_do_diff3(merge_b->ra_session1,
> + SVN_ERR(svn_ra_do_diff4(merge_b->ra_session1,
> &reporter, &report_baton, revision2,
> "", depth, merge_b->ignore_ancestry,
> - TRUE, /* text_deltas */
> + TRUE /* text_deltas */, FALSE /*diff_copy_from*/,
style nit: need more spaces in comment, like this: /* diff_copy_from */
> url2, diff_editor, diff_edit_baton, pool));
>
> /* Drive the reporter. */
> Index: subversion/libsvn_client/diff.c
> ===================================================================
> --- subversion/libsvn_client/diff.c (revision 1038978)
> +++ subversion/libsvn_client/diff.c (working copy)
> @@ -1681,6 +1681,7 @@
> const svn_opt_revision_t *peg_revision,
> svn_depth_t depth,
> svn_boolean_t ignore_ancestry,
> + svn_boolean_t diff_copy_from,
> apr_pool_t *pool)
> {
> svn_ra_session_t *extra_ra_session;
> @@ -1733,13 +1734,13 @@
> NULL, callbacks, callback_baton, depth,
> FALSE /* doesn't matter for diff */, extra_ra_session, rev1,
> NULL /* no notify_func */, NULL /* no notify_baton */,
> - ctx->cancel_func, ctx->cancel_baton,
> + diff_copy_from, ctx->cancel_func, ctx->cancel_baton,
> &diff_editor, &diff_edit_baton, pool));
>
> /* We want to switch our txn into URL2 */
> - SVN_ERR(svn_ra_do_diff3
> + SVN_ERR(svn_ra_do_diff4
> (ra_session, &reporter, &reporter_baton, rev2, target1,
> - depth, ignore_ancestry, TRUE,
> + depth, ignore_ancestry, TRUE, diff_copy_from,
> url2, diff_editor, diff_edit_baton, pool));
>
> /* Drive the reporter; do the diff. */
> @@ -1770,6 +1771,7 @@
> svn_boolean_t reverse,
> svn_depth_t depth,
> svn_boolean_t ignore_ancestry,
> + svn_boolean_t diff_copy_from,
> svn_boolean_t show_copies_as_adds,
> svn_boolean_t use_git_diff_format,
> const apr_array_header_t *changelists,
> @@ -1878,13 +1880,14 @@
> else
> callback_baton->revnum2 = rev;
>
> - SVN_ERR(svn_ra_do_diff3(ra_session,
> + SVN_ERR(svn_ra_do_diff4(ra_session,
> &reporter, &reporter_baton,
> rev,
> target ? svn_path_uri_decode(target, pool) : NULL,
> depth,
> ignore_ancestry,
> TRUE, /* text_deltas */
> + diff_copy_from,
> url1,
> diff_editor, diff_edit_baton, pool));
>
> @@ -1915,6 +1918,7 @@
> const svn_opt_revision_t *peg_revision,
> svn_depth_t depth,
> svn_boolean_t ignore_ancestry,
> + svn_boolean_t diff_copy_from,
> svn_boolean_t show_copies_as_adds,
> svn_boolean_t use_git_diff_format,
> const apr_array_header_t *changelists,
> @@ -1934,15 +1938,16 @@
> SVN_ERR(diff_repos_repos(callbacks, callback_baton, ctx,
> path1, path2, revision1, revision2,
> peg_revision, depth, ignore_ancestry,
> - pool));
> + diff_copy_from, pool));
> }
> else /* path2 is a working copy path */
> {
> SVN_ERR(diff_repos_wc(path1, revision1, peg_revision,
> path2, revision2, FALSE, depth,
> - ignore_ancestry, show_copies_as_adds,
> - use_git_diff_format, changelists,
> - callbacks, callback_baton, ctx, pool));
> + ignore_ancestry, diff_copy_from,
> + show_copies_as_adds, use_git_diff_format,
> + changelists, callbacks, callback_baton,
> + ctx, pool));
> }
> }
> else /* path1 is a working copy path */
> @@ -1951,9 +1956,10 @@
> {
> SVN_ERR(diff_repos_wc(path2, revision2, peg_revision,
> path1, revision1, TRUE, depth,
> - ignore_ancestry, show_copies_as_adds,
> - use_git_diff_format, changelists,
> - callbacks, callback_baton, ctx, pool));
> + ignore_ancestry, diff_copy_from,
> + show_copies_as_adds, use_git_diff_format,
> + changelists, callbacks, callback_baton,
> + ctx, pool));
> }
> else /* path2 is a working copy path */
> {
> @@ -2020,11 +2026,11 @@
> ctx->cancel_baton, &diff_editor, &diff_edit_baton, pool));
>
> /* We want to switch our txn into URL2 */
> - SVN_ERR(svn_ra_do_diff3
> + SVN_ERR(svn_ra_do_diff4
> (ra_session, &reporter, &reporter_baton, rev2, target1,
> depth, ignore_ancestry,
> - FALSE /* do not create text delta */, url2, diff_editor,
> - diff_edit_baton, pool));
> + FALSE /* do not create text delta */, FALSE /* diff_copy_from */,
> + url2, diff_editor, diff_edit_baton, pool));
>
> /* Drive the reporter; do the diff. */
> SVN_ERR(reporter->set_path(reporter_baton, "", rev1,
> @@ -2177,6 +2183,7 @@
> svn_depth_t depth,
> svn_boolean_t ignore_ancestry,
> svn_boolean_t no_diff_deleted,
> + svn_boolean_t diff_copy_from,
> svn_boolean_t show_copies_as_adds,
> svn_boolean_t ignore_content_type,
> svn_boolean_t use_git_diff_format,
> @@ -2228,7 +2235,7 @@
>
> return do_diff(&diff_callbacks, &diff_cmd_baton, ctx,
> path1, path2, revision1, revision2, &peg_revision,
> - depth, ignore_ancestry, show_copies_as_adds,
> + depth, ignore_ancestry, diff_copy_from, show_copies_as_adds,
> use_git_diff_format, changelists, pool);
> }
>
> @@ -2242,6 +2249,7 @@
> svn_depth_t depth,
> svn_boolean_t ignore_ancestry,
> svn_boolean_t no_diff_deleted,
> + svn_boolean_t diff_copy_from,
> svn_boolean_t show_copies_as_adds,
> svn_boolean_t ignore_content_type,
> svn_boolean_t use_git_diff_format,
> @@ -2289,7 +2297,7 @@
>
> return do_diff(&diff_callbacks, &diff_cmd_baton, ctx,
> path, path, start_revision, end_revision, peg_revision,
> - depth, ignore_ancestry, show_copies_as_adds,
> + depth, ignore_ancestry, diff_copy_from, show_copies_as_adds,
> use_git_diff_format, changelists, pool);
> }
>
> Index: subversion/libsvn_ra_serf/update.c
> ===================================================================
> --- subversion/libsvn_ra_serf/update.c (revision 1038978)
> +++ subversion/libsvn_ra_serf/update.c (working copy)
> @@ -2628,6 +2628,7 @@
> svn_depth_t depth,
> svn_boolean_t ignore_ancestry,
> svn_boolean_t text_deltas,
> + svn_boolean_t diff_copy_from,
> const char *versus_url,
> const svn_delta_editor_t *diff_editor,
> void *diff_baton,
> @@ -2638,7 +2639,8 @@
> return make_update_reporter(ra_session, reporter, report_baton,
> revision,
> session->repos_url.path, versus_url, diff_target,
> - depth, ignore_ancestry, text_deltas, FALSE,
> + depth, ignore_ancestry, text_deltas,
> + diff_copy_from ? TRUE : FALSE,
> diff_editor, diff_baton, pool);
> }
>
> Index: subversion/libsvn_ra_serf/ra_serf.h
> ===================================================================
> --- subversion/libsvn_ra_serf/ra_serf.h (revision 1038978)
> +++ subversion/libsvn_ra_serf/ra_serf.h (working copy)
> @@ -1245,6 +1245,7 @@
> svn_depth_t depth,
> svn_boolean_t ignore_ancestry,
> svn_boolean_t text_deltas,
> + svn_boolean_t diff_copy_from,
> const char *versus_url,
> const svn_delta_editor_t *diff_editor,
> void *diff_baton,
> Index: subversion/libsvn_ra_neon/ra_neon.h
> ===================================================================
> --- subversion/libsvn_ra_neon/ra_neon.h (revision 1038978)
> +++ subversion/libsvn_ra_neon/ra_neon.h (working copy)
> @@ -349,6 +349,7 @@
> svn_depth_t depth,
> svn_boolean_t ignore_ancestry,
> svn_boolean_t text_deltas,
> + svn_boolean_t diff_copy_from,
> const char *versus_url,
> const svn_delta_editor_t *wc_diff,
> void *wc_diff_baton,
> Index: subversion/libsvn_ra_neon/fetch.c
> ===================================================================
> --- subversion/libsvn_ra_neon/fetch.c (revision 1038978)
> +++ subversion/libsvn_ra_neon/fetch.c (working copy)
> @@ -2809,6 +2809,7 @@
> svn_depth_t depth,
> svn_boolean_t ignore_ancestry,
> svn_boolean_t text_deltas,
> + svn_boolean_t diff_copy_from,
> const char *versus_url,
> const svn_delta_editor_t *wc_diff,
> void *wc_diff_baton,
> @@ -2821,7 +2822,7 @@
> diff_target,
> versus_url,
> depth,
> - FALSE,
> + diff_copy_from ? TRUE : FALSE,
> ignore_ancestry,
> FALSE,
> wc_diff,
> Index: subversion/svnserve/serve.c
> ===================================================================
> --- subversion/svnserve/serve.c (revision 1038978)
> +++ subversion/svnserve/serve.c (working copy)
> @@ -1774,6 +1774,8 @@
> /* Default to unknown. Old clients won't send depth, but we'll
> handle that by converting recurse if necessary. */
> svn_depth_t depth = svn_depth_unknown;
> + /* Default to false. Pre-1.7 clients won't send diff-copy-from. */
> + svn_boolean_t diff_copy_from = FALSE;
>
> /* Parse the arguments. */
> if (params->nelts == 5)
> @@ -1786,10 +1788,10 @@
> }
> else
> {
> - SVN_ERR(svn_ra_svn_parse_tuple(params, pool, "(?r)cbbcb?w",
> + SVN_ERR(svn_ra_svn_parse_tuple(params, pool, "(?r)cbbcb?w?b",
> &rev, &target, &recurse,
> &ignore_ancestry, &versus_url,
> - &text_deltas, &depth_word));
> + &text_deltas, &depth_word, &diff_copy_from));
style nit: needs wrap at 78 columns, like this:
&text_deltas, &depth_word,
&diff_copy_from));
> }
> target = svn_uri_canonicalize(target, pool);
> versus_url = svn_uri_canonicalize(versus_url, pool);
> @@ -1812,7 +1814,8 @@
> svn_revnum_t from_rev;
> SVN_ERR(accept_report(NULL, &from_rev,
> conn, pool, b, rev, target, versus_path,
> - text_deltas, depth, FALSE, ignore_ancestry));
> + text_deltas, depth, diff_copy_from,
> + ignore_ancestry));
> SVN_ERR(log_command(b, conn, pool, "%s",
> svn_log__diff(full_path, from_rev, versus_path,
> rev, depth, ignore_ancestry,