Git Mailing List Archive mirror
 help / color / mirror / code / Atom feed
blob a61fa3c0f812c6ce56348545c0033d86dd932e4f 2538 bytes (raw)
name: builtin/symbolic-ref.c 	 # note: path name is non-authoritative(*)

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
 
#include "builtin.h"
#include "config.h"
#include "gettext.h"
#include "refs.h"
#include "parse-options.h"

static const char * const git_symbolic_ref_usage[] = {
	N_("git symbolic-ref [-m <reason>] <name> <ref>"),
	N_("git symbolic-ref [-q] [--short] [--no-recurse] <name>"),
	N_("git symbolic-ref --delete [-q] <name>"),
	NULL
};

static int check_symref(const char *HEAD, int quiet, int shorten, int recurse, int print)
{
	int resolve_flags, flag;
	const char *refname;

	resolve_flags = (recurse ? 0 : RESOLVE_REF_NO_RECURSE);
	refname = resolve_ref_unsafe(HEAD, resolve_flags, NULL, &flag);

	if (!refname)
		die("No such ref: %s", HEAD);
	else if (!(flag & REF_ISSYMREF)) {
		if (!quiet)
			die("ref %s is not a symbolic ref", HEAD);
		else
			return 1;
	}
	if (print) {
		char *to_free = NULL;
		if (shorten)
			refname = to_free = shorten_unambiguous_ref(refname, 0);
		puts(refname);
		free(to_free);
	}
	return 0;
}

int cmd_symbolic_ref(int argc, const char **argv, const char *prefix)
{
	int quiet = 0, delete = 0, shorten = 0, recurse = 1, ret = 0;
	const char *msg = NULL;
	struct option options[] = {
		OPT__QUIET(&quiet,
			N_("suppress error message for non-symbolic (detached) refs")),
		OPT_BOOL('d', "delete", &delete, N_("delete symbolic ref")),
		OPT_BOOL(0, "short", &shorten, N_("shorten ref output")),
		OPT_BOOL(0, "recurse", &recurse, N_("recursively dereference (default)")),
		OPT_STRING('m', NULL, &msg, N_("reason"), N_("reason of the update")),
		OPT_END(),
	};

	git_config(git_default_config, NULL);
	argc = parse_options(argc, argv, prefix, options,
			     git_symbolic_ref_usage, 0);
	if (msg && !*msg)
		die("Refusing to perform update with empty message");

	if (delete) {
		if (argc != 1)
			usage_with_options(git_symbolic_ref_usage, options);
		ret = check_symref(argv[0], 1, 0, 0, 0);
		if (ret)
			die("Cannot delete %s, not a symbolic ref", argv[0]);
		if (!strcmp(argv[0], "HEAD"))
			die("deleting '%s' is not allowed", argv[0]);
		return delete_ref(NULL, argv[0], NULL, REF_NO_DEREF);
	}

	switch (argc) {
	case 1:
		ret = check_symref(argv[0], quiet, shorten, recurse, 1);
		break;
	case 2:
		if (!strcmp(argv[0], "HEAD") &&
		    !starts_with(argv[1], "refs/"))
			die("Refusing to point HEAD outside of refs/");
		if (check_refname_format(argv[1], REFNAME_ALLOW_ONELEVEL) < 0)
			die("Refusing to set '%s' to invalid ref '%s'", argv[0], argv[1]);
		ret = !!create_symref(argv[0], argv[1], msg);
		break;
	default:
		usage_with_options(git_symbolic_ref_usage, options);
	}
	return ret;
}

debug log:

solving a61fa3c0f8 ...
found a61fa3c0f8 in https://80x24.org/lore/pub/scm/git/git.git/

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://80x24.org/lore/pub/scm/git/git.git/

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).