diff options
Diffstat (limited to 'builtin/replace.c')
| -rw-r--r-- | builtin/replace.c | 249 |
1 files changed, 177 insertions, 72 deletions
diff --git a/builtin/replace.c b/builtin/replace.c index 935647be6b..deabda2101 100644 --- a/builtin/replace.c +++ b/builtin/replace.c @@ -14,12 +14,15 @@ #include "refs.h" #include "parse-options.h" #include "run-command.h" +#include "object-store.h" +#include "repository.h" #include "tag.h" static const char * const git_replace_usage[] = { N_("git replace [-f] <object> <replacement>"), N_("git replace [-f] --edit <object>"), N_("git replace [-f] --graft <commit> [<parent>...]"), + N_("git replace [-f] --convert-graft-file"), N_("git replace -d <object>..."), N_("git replace [--format=<format>] [-l [<pattern>]]"), NULL @@ -53,8 +56,9 @@ static int show_reference(const char *refname, const struct object_id *oid, if (get_oid(refname, &object)) return error("Failed to resolve '%s' as a valid ref.", refname); - obj_type = oid_object_info(&object, NULL); - repl_type = oid_object_info(oid, NULL); + obj_type = oid_object_info(the_repository, &object, + NULL); + repl_type = oid_object_info(the_repository, oid, NULL); printf("%s (%s) -> %s (%s)\n", refname, type_name(obj_type), oid_to_hex(oid), type_name(repl_type)); @@ -79,11 +83,11 @@ static int list_replace_refs(const char *pattern, const char *format) else if (!strcmp(format, "long")) data.format = REPLACE_FORMAT_LONG; else - die("invalid replace format '%s'\n" - "valid formats are 'short', 'medium' and 'long'\n", - format); + return error("invalid replace format '%s'\n" + "valid formats are 'short', 'medium' and 'long'\n", + format); - for_each_replace_ref(show_reference, (void *)&data); + for_each_replace_ref(the_repository, show_reference, (void *)&data); return 0; } @@ -134,7 +138,7 @@ static int delete_replace_ref(const char *name, const char *ref, return 0; } -static void check_ref_valid(struct object_id *object, +static int check_ref_valid(struct object_id *object, struct object_id *prev, struct strbuf *ref, int force) @@ -142,12 +146,13 @@ static void check_ref_valid(struct object_id *object, strbuf_reset(ref); strbuf_addf(ref, "%s%s", git_replace_ref_base, oid_to_hex(object)); if (check_refname_format(ref->buf, 0)) - die("'%s' is not a valid ref name.", ref->buf); + return error("'%s' is not a valid ref name.", ref->buf); if (read_ref(ref->buf, prev)) oidclr(prev); else if (!force) - die("replace ref '%s' already exists", ref->buf); + return error("replace ref '%s' already exists", ref->buf); + return 0; } static int replace_object_oid(const char *object_ref, @@ -161,28 +166,33 @@ static int replace_object_oid(const char *object_ref, struct strbuf ref = STRBUF_INIT; struct ref_transaction *transaction; struct strbuf err = STRBUF_INIT; + int res = 0; - obj_type = oid_object_info(object, NULL); - repl_type = oid_object_info(repl, NULL); + obj_type = oid_object_info(the_repository, object, NULL); + repl_type = oid_object_info(the_repository, repl, NULL); if (!force && obj_type != repl_type) - die("Objects must be of the same type.\n" - "'%s' points to a replaced object of type '%s'\n" - "while '%s' points to a replacement object of type '%s'.", - object_ref, type_name(obj_type), - replace_ref, type_name(repl_type)); - - check_ref_valid(object, &prev, &ref, force); + return error("Objects must be of the same type.\n" + "'%s' points to a replaced object of type '%s'\n" + "while '%s' points to a replacement object of " + "type '%s'.", + object_ref, type_name(obj_type), + replace_ref, type_name(repl_type)); + + if (check_ref_valid(object, &prev, &ref, force)) { + strbuf_release(&ref); + return -1; + } transaction = ref_transaction_begin(&err); if (!transaction || ref_transaction_update(transaction, ref.buf, repl, &prev, 0, NULL, &err) || ref_transaction_commit(transaction, &err)) - die("%s", err.buf); + res = error("%s", err.buf); ref_transaction_free(transaction); strbuf_release(&ref); - return 0; + return res; } static int replace_object(const char *object_ref, const char *replace_ref, int force) @@ -190,9 +200,11 @@ static int replace_object(const char *object_ref, const char *replace_ref, int f struct object_id object, repl; if (get_oid(object_ref, &object)) - die("Failed to resolve '%s' as a valid ref.", object_ref); + return error("Failed to resolve '%s' as a valid ref.", + object_ref); if (get_oid(replace_ref, &repl)) - die("Failed to resolve '%s' as a valid ref.", replace_ref); + return error("Failed to resolve '%s' as a valid ref.", + replace_ref); return replace_object_oid(object_ref, &object, replace_ref, &repl, force); } @@ -202,7 +214,7 @@ static int replace_object(const char *object_ref, const char *replace_ref, int f * If "raw" is true, then the object's raw contents are printed according to * "type". Otherwise, we pretty-print the contents for human editing. */ -static void export_object(const struct object_id *oid, enum object_type type, +static int export_object(const struct object_id *oid, enum object_type type, int raw, const char *filename) { struct child_process cmd = CHILD_PROCESS_INIT; @@ -210,7 +222,7 @@ static void export_object(const struct object_id *oid, enum object_type type, fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666); if (fd < 0) - die_errno("unable to open %s for writing", filename); + return error_errno("unable to open %s for writing", filename); argv_array_push(&cmd.args, "--no-replace-objects"); argv_array_push(&cmd.args, "cat-file"); @@ -223,7 +235,8 @@ static void export_object(const struct object_id *oid, enum object_type type, cmd.out = fd; if (run_command(&cmd)) - die("cat-file reported failure"); + return error("cat-file reported failure"); + return 0; } /* @@ -231,14 +244,14 @@ static void export_object(const struct object_id *oid, enum object_type type, * interpreting it as "type", and writing the result to the object database. * The sha1 of the written object is returned via sha1. */ -static void import_object(struct object_id *oid, enum object_type type, +static int import_object(struct object_id *oid, enum object_type type, int raw, const char *filename) { int fd; fd = open(filename, O_RDONLY); if (fd < 0) - die_errno("unable to open %s for reading", filename); + return error_errno("unable to open %s for reading", filename); if (!raw && type == OBJ_TREE) { const char *argv[] = { "mktree", NULL }; @@ -250,27 +263,40 @@ static void import_object(struct object_id *oid, enum object_type type, cmd.in = fd; cmd.out = -1; - if (start_command(&cmd)) - die("unable to spawn mktree"); + if (start_command(&cmd)) { + close(fd); + return error("unable to spawn mktree"); + } - if (strbuf_read(&result, cmd.out, 41) < 0) - die_errno("unable to read from mktree"); + if (strbuf_read(&result, cmd.out, 41) < 0) { + error_errno("unable to read from mktree"); + close(fd); + close(cmd.out); + return -1; + } close(cmd.out); - if (finish_command(&cmd)) - die("mktree reported failure"); - if (get_oid_hex(result.buf, oid) < 0) - die("mktree did not return an object name"); + if (finish_command(&cmd)) { + strbuf_release(&result); + return error("mktree reported failure"); + } + if (get_oid_hex(result.buf, oid) < 0) { + strbuf_release(&result); + return error("mktree did not return an object name"); + } strbuf_release(&result); } else { struct stat st; int flags = HASH_FORMAT_CHECK | HASH_WRITE_OBJECT; - if (fstat(fd, &st) < 0) - die_errno("unable to fstat %s", filename); + if (fstat(fd, &st) < 0) { + error_errno("unable to fstat %s", filename); + close(fd); + return -1; + } if (index_fd(oid, fd, &st, type, NULL, flags) < 0) - die("unable to write object to database"); + return error("unable to write object to database"); /* index_fd close()s fd for us */ } @@ -278,30 +304,43 @@ static void import_object(struct object_id *oid, enum object_type type, * No need to close(fd) here; both run-command and index-fd * will have done it for us. */ + return 0; } static int edit_and_replace(const char *object_ref, int force, int raw) { - char *tmpfile = git_pathdup("REPLACE_EDITOBJ"); + char *tmpfile; enum object_type type; struct object_id old_oid, new_oid, prev; struct strbuf ref = STRBUF_INIT; if (get_oid(object_ref, &old_oid) < 0) - die("Not a valid object name: '%s'", object_ref); + return error("Not a valid object name: '%s'", object_ref); - type = oid_object_info(&old_oid, NULL); + type = oid_object_info(the_repository, &old_oid, NULL); if (type < 0) - die("unable to get object type for %s", oid_to_hex(&old_oid)); + return error("unable to get object type for %s", + oid_to_hex(&old_oid)); - check_ref_valid(&old_oid, &prev, &ref, force); + if (check_ref_valid(&old_oid, &prev, &ref, force)) { + strbuf_release(&ref); + return -1; + } strbuf_release(&ref); - export_object(&old_oid, type, raw, tmpfile); - if (launch_editor(tmpfile, NULL, NULL) < 0) - die("editing object file failed"); - import_object(&new_oid, type, raw, tmpfile); - + tmpfile = git_pathdup("REPLACE_EDITOBJ"); + if (export_object(&old_oid, type, raw, tmpfile)) { + free(tmpfile); + return -1; + } + if (launch_editor(tmpfile, NULL, NULL) < 0) { + free(tmpfile); + return error("editing object file failed"); + } + if (import_object(&new_oid, type, raw, tmpfile)) { + free(tmpfile); + return -1; + } free(tmpfile); if (!oidcmp(&old_oid, &new_oid)) @@ -310,7 +349,7 @@ static int edit_and_replace(const char *object_ref, int force, int raw) return replace_object_oid(object_ref, &old_oid, "replacement", &new_oid, force); } -static void replace_parents(struct strbuf *buf, int argc, const char **argv) +static int replace_parents(struct strbuf *buf, int argc, const char **argv) { struct strbuf new_parents = STRBUF_INIT; const char *parent_start, *parent_end; @@ -327,9 +366,15 @@ static void replace_parents(struct strbuf *buf, int argc, const char **argv) /* prepare new parents */ for (i = 0; i < argc; i++) { struct object_id oid; - if (get_oid(argv[i], &oid) < 0) - die(_("Not a valid object name: '%s'"), argv[i]); - lookup_commit_or_die(&oid, argv[i]); + if (get_oid(argv[i], &oid) < 0) { + strbuf_release(&new_parents); + return error(_("Not a valid object name: '%s'"), + argv[i]); + } + if (!lookup_commit_reference(&oid)) { + strbuf_release(&new_parents); + return error(_("could not parse %s"), argv[i]); + } strbuf_addf(&new_parents, "parent %s\n", oid_to_hex(&oid)); } @@ -338,6 +383,7 @@ static void replace_parents(struct strbuf *buf, int argc, const char **argv) new_parents.buf, new_parents.len); strbuf_release(&new_parents); + return 0; } struct check_mergetag_data { @@ -345,7 +391,7 @@ struct check_mergetag_data { const char **argv; }; -static void check_one_mergetag(struct commit *commit, +static int check_one_mergetag(struct commit *commit, struct commit_extra_header *extra, void *data) { @@ -358,33 +404,35 @@ static void check_one_mergetag(struct commit *commit, hash_object_file(extra->value, extra->len, type_name(OBJ_TAG), &tag_oid); tag = lookup_tag(&tag_oid); if (!tag) - die(_("bad mergetag in commit '%s'"), ref); + return error(_("bad mergetag in commit '%s'"), ref); if (parse_tag_buffer(tag, extra->value, extra->len)) - die(_("malformed mergetag in commit '%s'"), ref); + return error(_("malformed mergetag in commit '%s'"), ref); /* iterate over new parents */ for (i = 1; i < mergetag_data->argc; i++) { struct object_id oid; if (get_oid(mergetag_data->argv[i], &oid) < 0) - die(_("Not a valid object name: '%s'"), mergetag_data->argv[i]); + return error(_("Not a valid object name: '%s'"), + mergetag_data->argv[i]); if (!oidcmp(&tag->tagged->oid, &oid)) - return; /* found */ + return 0; /* found */ } - die(_("original commit '%s' contains mergetag '%s' that is discarded; " - "use --edit instead of --graft"), ref, oid_to_hex(&tag_oid)); + return error(_("original commit '%s' contains mergetag '%s' that is " + "discarded; use --edit instead of --graft"), ref, + oid_to_hex(&tag_oid)); } -static void check_mergetags(struct commit *commit, int argc, const char **argv) +static int check_mergetags(struct commit *commit, int argc, const char **argv) { struct check_mergetag_data mergetag_data; mergetag_data.argc = argc; mergetag_data.argv = argv; - for_each_mergetag(check_one_mergetag, commit, &mergetag_data); + return for_each_mergetag(check_one_mergetag, commit, &mergetag_data); } -static int create_graft(int argc, const char **argv, int force) +static int create_graft(int argc, const char **argv, int force, int gentle) { struct object_id old_oid, new_oid; const char *old_ref = argv[0]; @@ -394,33 +442,81 @@ static int create_graft(int argc, const char **argv, int force) unsigned long size; if (get_oid(old_ref, &old_oid) < 0) - die(_("Not a valid object name: '%s'"), old_ref); - commit = lookup_commit_or_die(&old_oid, old_ref); + return error(_("Not a valid object name: '%s'"), old_ref); + commit = lookup_commit_reference(&old_oid); + if (!commit) + return error(_("could not parse %s"), old_ref); buffer = get_commit_buffer(commit, &size); strbuf_add(&buf, buffer, size); unuse_commit_buffer(commit, buffer); - replace_parents(&buf, argc - 1, &argv[1]); + if (replace_parents(&buf, argc - 1, &argv[1]) < 0) { + strbuf_release(&buf); + return -1; + } if (remove_signature(&buf)) { warning(_("the original commit '%s' has a gpg signature."), old_ref); warning(_("the signature will be removed in the replacement commit!")); } - check_mergetags(commit, argc, argv); + if (check_mergetags(commit, argc, argv)) { + strbuf_release(&buf); + return -1; + } - if (write_object_file(buf.buf, buf.len, commit_type, &new_oid)) - die(_("could not write replacement commit for: '%s'"), old_ref); + if (write_object_file(buf.buf, buf.len, commit_type, &new_oid)) { + strbuf_release(&buf); + return error(_("could not write replacement commit for: '%s'"), + old_ref); + } strbuf_release(&buf); - if (!oidcmp(&old_oid, &new_oid)) + if (!oidcmp(&old_oid, &new_oid)) { + if (gentle) { + warning("graft for '%s' unnecessary", oid_to_hex(&old_oid)); + return 0; + } return error("new commit is the same as the old one: '%s'", oid_to_hex(&old_oid)); + } return replace_object_oid(old_ref, &old_oid, "replacement", &new_oid, force); } +static int convert_graft_file(int force) +{ + const char *graft_file = get_graft_file(the_repository); + FILE *fp = fopen_or_warn(graft_file, "r"); + struct strbuf buf = STRBUF_INIT, err = STRBUF_INIT; + struct argv_array args = ARGV_ARRAY_INIT; + + if (!fp) + return -1; + + while (strbuf_getline(&buf, fp) != EOF) { + if (*buf.buf == '#') + continue; + + argv_array_split(&args, buf.buf); + if (args.argc && create_graft(args.argc, args.argv, force, 1)) + strbuf_addf(&err, "\n\t%s", buf.buf); + argv_array_clear(&args); + } + fclose(fp); + + strbuf_release(&buf); + + if (!err.len) + return unlink_or_warn(graft_file); + + warning(_("could not convert the following graft(s):\n%s"), err.buf); + strbuf_release(&err); + + return -1; +} + int cmd_replace(int argc, const char **argv, const char *prefix) { int force = 0; @@ -432,6 +528,7 @@ int cmd_replace(int argc, const char **argv, const char *prefix) MODE_DELETE, MODE_EDIT, MODE_GRAFT, + MODE_CONVERT_GRAFT_FILE, MODE_REPLACE } cmdmode = MODE_UNSPECIFIED; struct option options[] = { @@ -439,6 +536,7 @@ int cmd_replace(int argc, const char **argv, const char *prefix) OPT_CMDMODE('d', "delete", &cmdmode, N_("delete replace refs"), MODE_DELETE), OPT_CMDMODE('e', "edit", &cmdmode, N_("edit existing object"), MODE_EDIT), OPT_CMDMODE('g', "graft", &cmdmode, N_("change a commit's parents"), MODE_GRAFT), + OPT_CMDMODE(0, "convert-graft-file", &cmdmode, N_("convert existing graft file"), MODE_CONVERT_GRAFT_FILE), OPT_BOOL_F('f', "force", &force, N_("replace the ref if it exists"), PARSE_OPT_NOCOMPLETE), OPT_BOOL(0, "raw", &raw, N_("do not pretty-print contents for --edit")), @@ -461,7 +559,8 @@ int cmd_replace(int argc, const char **argv, const char *prefix) if (force && cmdmode != MODE_REPLACE && cmdmode != MODE_EDIT && - cmdmode != MODE_GRAFT) + cmdmode != MODE_GRAFT && + cmdmode != MODE_CONVERT_GRAFT_FILE) usage_msg_opt("-f only makes sense when writing a replacement", git_replace_usage, options); @@ -492,7 +591,13 @@ int cmd_replace(int argc, const char **argv, const char *prefix) if (argc < 1) usage_msg_opt("-g needs at least one argument", git_replace_usage, options); - return create_graft(argc, argv, force); + return create_graft(argc, argv, force, 0); + + case MODE_CONVERT_GRAFT_FILE: + if (argc != 0) + usage_msg_opt("--convert-graft-file takes no argument", + git_replace_usage, options); + return !!convert_graft_file(force); case MODE_LIST: if (argc > 1) @@ -501,6 +606,6 @@ int cmd_replace(int argc, const char **argv, const char *prefix) return list_replace_refs(argv[0], format); default: - die("BUG: invalid cmdmode %d", (int)cmdmode); + BUG("invalid cmdmode %d", (int)cmdmode); } } |