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30304d8156
Teach the "log" UI to behave in the same way as "git log --follow", when
given a suitable instruction by the user. The default behaviour remains
to show the log without following renames, but the follow behaviour can
be activated by following a link in the page header.
Follow is not the default because outputting merges in follow mode is
tricky ("git log --follow" will not show merges). We also disable the
graph in follow mode because the commit graph is not simplified so we
end up with frequent gaps in the graph and many lines that do not
connect with any commits we're actually showing.
We also teach the "diff" and "commit" UIs to respect the follow flag on
URLs, causing the single-file version of these UIs to detect renames.
This feature is needed only for commits that rename the path we're
interested in.
For commits before the file has been renamed (i.e. that appear later in
the log list) we change the file path in the links from the log to point
to the old name; this means that links to commits always limit by the
path known to that commit. If we didn't do this we would need to walk
down the log diff'ing every commit whenever we want to show a commit.
The drawback is that the "Log" link in the top bar of such a page links
to the log limited by the old name, so it will only show pre-rename
commits. I consider this a reasonable trade-off since the "Back" button
still works and the log matches the path displayed in the top bar.
Since following renames requires running diff on every commit we
consider, I've added a knob to the configuration file to globally
enable/disable this feature. Note that we may consider a large number
of commits the revision walking machinery no longer performs any path
limitation so we have to examine every commit until we find a page full
of commits that affect the target path or something related to it.
Suggested-by: René Neumann <necoro@necoro.eu>
Signed-off-by: John Keeping <john@keeping.me.uk>
76 lines
3.3 KiB
C
76 lines
3.3 KiB
C
#ifndef UI_SHARED_H
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#define UI_SHARED_H
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#include <stdbool.h>
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extern const char *cgit_httpscheme();
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extern const char *cgit_hosturl();
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extern const char *cgit_rooturl();
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extern const char *cgit_currenturl();
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extern const char *cgit_loginurl();
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extern char *cgit_repourl(const char *reponame);
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extern char *cgit_fileurl(const char *reponame, const char *pagename,
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const char *filename, const char *query);
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extern char *cgit_pageurl(const char *reponame, const char *pagename,
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const char *query);
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extern void cgit_add_clone_urls(void (*fn)(const char *));
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extern void cgit_index_link(const char *name, const char *title,
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const char *class, const char *pattern, const char *sort, int ofs, int always_root);
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extern void cgit_summary_link(const char *name, const char *title,
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const char *class, const char *head);
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extern void cgit_tag_link(const char *name, const char *title,
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const char *class, const char *tag);
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extern void cgit_tree_link(const char *name, const char *title,
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const char *class, const char *head,
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const char *rev, const char *path);
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extern void cgit_plain_link(const char *name, const char *title,
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const char *class, const char *head,
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const char *rev, const char *path);
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extern void cgit_log_link(const char *name, const char *title,
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const char *class, const char *head, const char *rev,
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const char *path, int ofs, const char *grep,
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const char *pattern, int showmsg, int follow);
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extern void cgit_commit_link(char *name, const char *title,
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const char *class, const char *head,
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const char *rev, const char *path);
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extern void cgit_patch_link(const char *name, const char *title,
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const char *class, const char *head,
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const char *rev, const char *path);
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extern void cgit_refs_link(const char *name, const char *title,
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const char *class, const char *head,
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const char *rev, const char *path);
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extern void cgit_snapshot_link(const char *name, const char *title,
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const char *class, const char *head,
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const char *rev, const char *archivename);
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extern void cgit_diff_link(const char *name, const char *title,
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const char *class, const char *head,
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const char *new_rev, const char *old_rev,
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const char *path);
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extern void cgit_stats_link(const char *name, const char *title,
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const char *class, const char *head,
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const char *path);
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extern void cgit_object_link(struct object *obj);
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extern void cgit_submodule_link(const char *class, char *path,
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const char *rev);
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__attribute__((format (printf,1,2)))
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extern void cgit_print_error(const char *fmt, ...);
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__attribute__((format (printf,1,0)))
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extern void cgit_vprint_error(const char *fmt, va_list ap);
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extern void cgit_print_date(time_t secs, const char *format, int local_time);
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extern void cgit_print_age(time_t t, time_t max_relative, const char *format);
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extern void cgit_print_http_headers(void);
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extern void cgit_redirect(const char *url, bool permanent);
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extern void cgit_print_docstart(void);
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extern void cgit_print_docend();
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extern void cgit_print_pageheader(void);
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extern void cgit_print_filemode(unsigned short mode);
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extern void cgit_print_snapshot_links(const char *repo, const char *head,
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const char *hex, int snapshots);
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extern void cgit_add_hidden_formfields(int incl_head, int incl_search,
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const char *page);
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#endif /* UI_SHARED_H */
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