Antoine Pelisse <apelisse@xxxxxxxxx> writes:
> Currently mailmap can be used to display log authors and committers
> but there no way to use mailmap to find commits with mapped values.
>
> This commit allows those commands to work:
>
> git log --use-mailmap --author mapped_name_or_email
> git log --use-mailmap --committer mapped_name_or_email
>
> Of course it only works if the --use-mailmap option is used.
>
> Signed-off-by: Antoine Pelisse <apelisse@xxxxxxxxx>
> ---
> I probably missed something but I didn't find the connection with
> commit 2d10c55. Let me know if I went the wrong direction.
>
> revision.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++++
> t/t4203-mailmap.sh | 18 ++++++++++++++++++
> 2 files changed, 71 insertions(+)
>
> diff --git a/revision.c b/revision.c
> index 95d21e6..fb9fd41 100644
> --- a/revision.c
> +++ b/revision.c
> @@ -13,6 +13,7 @@
> #include "decorate.h"
> #include "log-tree.h"
> #include "string-list.h"
> +#include "mailmap.h"
>
> volatile show_early_output_fn_t show_early_output;
>
> @@ -2219,6 +2220,50 @@ static int rewrite_parents(struct rev_info *revs, struct commit *commit)
> return 0;
> }
>
> +static int commit_rewrite_authors(struct strbuf *buf, const char *what, struct string_list *mailmap)
> +{
> + char *author, *endp;
> + size_t len;
> + struct strbuf name = STRBUF_INIT;
> + struct strbuf mail = STRBUF_INIT;
> + struct ident_split ident;
> +
> + author = strstr(buf->buf, what);
> + if (!author)
> + goto error;
This does not stop at the end of the header part and would match a
random line in the log message that happens to begin with "author ";
is this something we would worry about, or would we leave it to "fsck"?
> + author += strlen(what);
> + endp = strstr(author, "\n");
Using strchr(author, '\n') would feel more natural. Also rename
"author" to "person" or something, as you would be using this
function for the committer information as well?
> + if (!endp)
> + goto error;
> +
> + len = endp - author;
> +
> + if (split_ident_line(&ident, author, len)) {
> + error:
> + strbuf_release(&name);
> + strbuf_release(&mail);
> +
> + return 1;
We usually signal error by returning a negative integer. It does
not matter too much in this case as no callers seem to check the
return value from this function, though.
> + }
> +
> + strbuf_add(&name, ident.name_begin, ident.name_end - ident.name_begin);
> + strbuf_add(&mail, ident.mail_begin, ident.mail_end - ident.mail_begin);
> +
> + map_user(mailmap, &mail, &name);
> +
> + strbuf_addf(&name, " <%s>", mail.buf);
> +
> + strbuf_splice(buf, ident.name_begin - buf->buf,
> + ident.mail_end - ident.name_begin + 1,
> + name.buf, name.len);
Would it give us better performance if we splice only when
map_user() tells us that we actually rewrote the ident?
> + strbuf_release(&name);
> + strbuf_release(&mail);
> +
> + return 0;
> +}
> +
> static int commit_match(struct commit *commit, struct rev_info *opt)
> {
> int retval;
> @@ -2237,6 +2282,14 @@ static int commit_match(struct commit *commit, struct rev_info *opt)
> if (buf.len)
> strbuf_addstr(&buf, commit->buffer);
>
> + if (opt->mailmap) {
> + if (!buf.len)
> + strbuf_addstr(&buf, commit->buffer);
> +
> + commit_rewrite_authors(&buf, "\nauthor ", opt->mailmap);
> + commit_rewrite_authors(&buf, "\ncommitter ", opt->mailmap);
> + }
> +
> /* Append "fake" message parts as needed */
> if (opt->show_notes) {
> if (!buf.len)
> diff --git a/t/t4203-mailmap.sh b/t/t4203-mailmap.sh
> index db043dc..e16187f 100755
> --- a/t/t4203-mailmap.sh
> +++ b/t/t4203-mailmap.sh
> @@ -248,11 +248,29 @@ Author: Other Author <other@xxxxxxxxx>
> Author: Some Dude <some@xxxxxxx>
> Author: A U Thor <author@xxxxxxxxxxx>
> EOF
> +
> test_expect_success 'Log output with --use-mailmap' '
> git log --use-mailmap | grep Author >actual &&
> test_cmp expect actual
> '
>
> +cat >expect <<\EOF
> +Author: Santa Claus <santa.claus@xxxxxxxxxxxx>
> +Author: Santa Claus <santa.claus@xxxxxxxxxxxx>
> +EOF
> +
> +test_expect_success 'Grep author with --use-mailmap' '
> + git log --use-mailmap --author Santa | grep Author >actual &&
> + test_cmp expect actual
> +'
> +
> +>expect
> +
> +test_expect_success 'Only grep replaced author with --use-mailmap' '
> + git log --use-mailmap --author "<cto@xxxxxxxxxxx>" >actual &&
> + test_cmp expect actual
> +'
> +
> # git blame
> cat >expect <<\EOF
> ^OBJI (A U Thor DATE 1) one
> --
> 1.7.9.5
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