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75e5c0dc55
When we push to update an existing ref, if: * the object at the tip of the remote is not a commit; or * the object we are pushing is not a commit, it won't be correct to suggest to fetch, integrate and push again, as the old and new objects will not "merge". We should explain that the push must be forced when there is a non-committish object is involved in such a case. If we do not have the current object at the tip of the remote, we do not even know that object, when fetched, is something that can be merged. In such a case, suggesting to pull first just like non-fast-forward case may not be technically correct, but in practice, most such failures are seen when you try to push your work to a branch without knowing that somebody else already pushed to update the same branch since you forked, so "pull first" would work as a suggestion most of the time. And if the object at the tip is not a commit, "pull first" will fail, without making any permanent damage. As a side effect, it also makes the error message the user will get during the next "push" attempt easier to understand, now the user is aware that a non-commit object is involved. In these cases, the current code already rejects such a push on the client end, but we used the same error and advice messages as the ones used when rejecting a non-fast-forward push, i.e. pull from there and integrate before pushing again. Introduce new rejection reasons and reword the messages appropriately. [jc: with help by Peff on message details] Signed-off-by: Junio C Hamano <gitster@pobox.com>
104 lines
3 KiB
C
104 lines
3 KiB
C
#include "cache.h"
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int advice_push_update_rejected = 1;
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int advice_push_non_ff_current = 1;
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int advice_push_non_ff_default = 1;
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int advice_push_non_ff_matching = 1;
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int advice_push_already_exists = 1;
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int advice_push_fetch_first = 1;
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int advice_push_needs_force = 1;
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int advice_status_hints = 1;
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int advice_commit_before_merge = 1;
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int advice_resolve_conflict = 1;
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int advice_implicit_identity = 1;
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int advice_detached_head = 1;
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static struct {
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const char *name;
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int *preference;
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} advice_config[] = {
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{ "pushupdaterejected", &advice_push_update_rejected },
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{ "pushnonffcurrent", &advice_push_non_ff_current },
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{ "pushnonffdefault", &advice_push_non_ff_default },
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{ "pushnonffmatching", &advice_push_non_ff_matching },
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{ "pushalreadyexists", &advice_push_already_exists },
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{ "pushfetchfirst", &advice_push_fetch_first },
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{ "pushneedsforce", &advice_push_needs_force },
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{ "statushints", &advice_status_hints },
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{ "commitbeforemerge", &advice_commit_before_merge },
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{ "resolveconflict", &advice_resolve_conflict },
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{ "implicitidentity", &advice_implicit_identity },
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{ "detachedhead", &advice_detached_head },
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/* make this an alias for backward compatibility */
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{ "pushnonfastforward", &advice_push_update_rejected }
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};
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void advise(const char *advice, ...)
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{
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struct strbuf buf = STRBUF_INIT;
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va_list params;
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const char *cp, *np;
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va_start(params, advice);
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strbuf_vaddf(&buf, advice, params);
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va_end(params);
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for (cp = buf.buf; *cp; cp = np) {
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np = strchrnul(cp, '\n');
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fprintf(stderr, _("hint: %.*s\n"), (int)(np - cp), cp);
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if (*np)
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np++;
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}
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strbuf_release(&buf);
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}
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int git_default_advice_config(const char *var, const char *value)
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{
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const char *k = skip_prefix(var, "advice.");
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int i;
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for (i = 0; i < ARRAY_SIZE(advice_config); i++) {
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if (strcmp(k, advice_config[i].name))
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continue;
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*advice_config[i].preference = git_config_bool(var, value);
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return 0;
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}
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return 0;
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}
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int error_resolve_conflict(const char *me)
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{
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error("'%s' is not possible because you have unmerged files.", me);
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if (advice_resolve_conflict)
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/*
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* Message used both when 'git commit' fails and when
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* other commands doing a merge do.
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*/
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advise(_("Fix them up in the work tree,\n"
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"and then use 'git add/rm <file>' as\n"
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"appropriate to mark resolution and make a commit,\n"
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"or use 'git commit -a'."));
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return -1;
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}
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void NORETURN die_resolve_conflict(const char *me)
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{
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error_resolve_conflict(me);
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die("Exiting because of an unresolved conflict.");
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}
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void detach_advice(const char *new_name)
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{
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const char fmt[] =
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"Note: checking out '%s'.\n\n"
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"You are in 'detached HEAD' state. You can look around, make experimental\n"
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"changes and commit them, and you can discard any commits you make in this\n"
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"state without impacting any branches by performing another checkout.\n\n"
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"If you want to create a new branch to retain commits you create, you may\n"
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"do so (now or later) by using -b with the checkout command again. Example:\n\n"
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" git checkout -b new_branch_name\n\n";
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fprintf(stderr, fmt, new_name);
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}
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