am: improve author-script error reporting

If there are errors in a user edited author-script there was no
indication of what was wrong. This commit adds some specific error messages
depending on the problem. It also relaxes the requirement that the
variables appear in a specific order in the file to match the behavior
of 'rebase --interactive'.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Phillip Wood 2018-10-31 10:15:53 +00:00 committed by Junio C Hamano
parent 28224c2359
commit 442c36bd08

View file

@ -270,8 +270,11 @@ static int parse_key_value_squoted(char *buf, struct string_list *list)
struct string_list_item *item; struct string_list_item *item;
char *np; char *np;
char *cp = strchr(buf, '='); char *cp = strchr(buf, '=');
if (!cp) if (!cp) {
return -1; np = strchrnul(buf, '\n');
return error(_("unable to parse '%.*s'"),
(int) (np - buf), buf);
}
np = strchrnul(cp, '\n'); np = strchrnul(cp, '\n');
*cp++ = '\0'; *cp++ = '\0';
item = string_list_append(list, buf); item = string_list_append(list, buf);
@ -280,7 +283,8 @@ static int parse_key_value_squoted(char *buf, struct string_list *list)
*np = '\0'; *np = '\0';
cp = sq_dequote(cp); cp = sq_dequote(cp);
if (!cp) if (!cp)
return -1; return error(_("unable to dequote value of '%s'"),
item->string);
item->util = xstrdup(cp); item->util = xstrdup(cp);
} }
return 0; return 0;
@ -308,6 +312,7 @@ static int read_author_script(struct am_state *state)
struct strbuf buf = STRBUF_INIT; struct strbuf buf = STRBUF_INIT;
struct string_list kv = STRING_LIST_INIT_DUP; struct string_list kv = STRING_LIST_INIT_DUP;
int retval = -1; /* assume failure */ int retval = -1; /* assume failure */
int i, name_i = -2, email_i = -2, date_i = -2, err = 0;
int fd; int fd;
assert(!state->author_name); assert(!state->author_name);
@ -326,14 +331,38 @@ static int read_author_script(struct am_state *state)
if (parse_key_value_squoted(buf.buf, &kv)) if (parse_key_value_squoted(buf.buf, &kv))
goto finish; goto finish;
if (kv.nr != 3 || for (i = 0; i < kv.nr; i++) {
strcmp(kv.items[0].string, "GIT_AUTHOR_NAME") || if (!strcmp(kv.items[i].string, "GIT_AUTHOR_NAME")) {
strcmp(kv.items[1].string, "GIT_AUTHOR_EMAIL") || if (name_i != -2)
strcmp(kv.items[2].string, "GIT_AUTHOR_DATE")) name_i = error(_("'GIT_AUTHOR_NAME' already given"));
else
name_i = i;
} else if (!strcmp(kv.items[i].string, "GIT_AUTHOR_EMAIL")) {
if (email_i != -2)
email_i = error(_("'GIT_AUTHOR_EMAIL' already given"));
else
email_i = i;
} else if (!strcmp(kv.items[i].string, "GIT_AUTHOR_DATE")) {
if (date_i != -2)
date_i = error(_("'GIT_AUTHOR_DATE' already given"));
else
date_i = i;
} else {
err = error(_("unknown variable '%s'"),
kv.items[i].string);
}
}
if (name_i == -2)
error(_("missing 'GIT_AUTHOR_NAME'"));
if (email_i == -2)
error(_("missing 'GIT_AUTHOR_EMAIL'"));
if (date_i == -2)
error(_("missing 'GIT_AUTHOR_DATE'"));
if (date_i < 0 || email_i < 0 || date_i < 0 || err)
goto finish; goto finish;
state->author_name = kv.items[0].util; state->author_name = kv.items[name_i].util;
state->author_email = kv.items[1].util; state->author_email = kv.items[email_i].util;
state->author_date = kv.items[2].util; state->author_date = kv.items[date_i].util;
retval = 0; retval = 0;
finish: finish:
string_list_clear(&kv, !!retval); string_list_clear(&kv, !!retval);