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author | Junio C Hamano <gitster@pobox.com> | 2013-01-05 22:26:39 +0100 |
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committer | Junio C Hamano <gitster@pobox.com> | 2013-01-10 12:32:35 -0800 |
commit | 388c7f8a275a40697cee2eec5fb124ae8457bf77 (patch) | |
tree | 6a64b5f7159bf262a31d2b2ce941b20a956a4fb2 /git-am.sh | |
parent | 3c020bd528d5dc320b82bd787670edfe6695f097 (diff) | |
download | git-388c7f8a275a40697cee2eec5fb124ae8457bf77.tar.gz |
mailmap: remove email copy and length limitation
In map_user(), we have email pointer that points at the beginning of
an e-mail address, but the buffer is not terminated with a NUL after
the e-mail address. It typically has ">" after the address, and it
could have even more if it comes from author/committer line in a
commit object. Or it may not have ">" after it.
We used to copy the e-mail address proper into a temporary buffer
before asking the string-list API to find the e-mail address in the
mailmap, because string_list_lookup() function only takes a NUL
terminated full string.
Introduce a helper function lookup_prefix that takes the email
pointer and the length, and finds a matching entry in the string
list used for the mailmap, by doing the following:
- First ask string_list_find_insert_index() where in its sorted
list the e-mail address we have (including the possible trailing
junk ">...") would be inserted.
- It could find an exact match (e.g. we had a clean e-mail address
without any trailing junk). We can return the item in that case.
- Or it could return the index of an item that sorts after the
e-mail address we have.
- If we did not find an exact match against a clean e-mail address,
then the record we are looking for in the mailmap has to exist
before the index returned by the function (i.e. "email>junk"
always sorts later than "email"). Iterate, starting from that
index, down the map->items[] array until we find the exact record
we are looking for, or we see a record with a key that definitely
sorts earlier than the e-mail we are looking for (i.e. when we
are looking for "email" in "email>junk", a record in the mailmap
that begins with "emaik" strictly sorts before "email", if such a
key existed in the mailmap).
This, together with the earlier enhancement to support
case-insensitive sorting, allow us to remove an extra copy of email
buffer to downcase it.
A part of this is based on Antoine Pelisse's previous work.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'git-am.sh')
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