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This adds the counterpart of git-update-ref that lets you read and create "symbolic refs". By default it uses a symbolic link to represent ".git/HEAD -> refs/heads/master", but it can be compiled to use the textfile symbolic ref. The places that did 'readlink .git/HEAD' and 'ln -s refs/heads/blah .git/HEAD' have been converted to use new git-symbolic-ref command, so that they can deal with either implementation. Signed-off-by: Junio C Hamano <junio@twinsun.com>
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Junio C Hamano
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Junio C Hamano
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Oct 2, 2005
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Original file line number | Diff line number | Diff line change |
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#include "cache.h" | ||
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static const char git_symbolic_ref_usage[] = | ||
"git-symbolic-ref name [ref]"; | ||
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static int check_symref(const char *HEAD) | ||
{ | ||
unsigned char sha1[20]; | ||
const char *git_HEAD = strdup(git_path("%s", HEAD)); | ||
const char *git_refs_heads_master = resolve_ref(git_HEAD, sha1, 0); | ||
if (git_refs_heads_master) { | ||
/* we want to strip the .git/ part */ | ||
int pfxlen = strlen(git_HEAD) - strlen(HEAD); | ||
puts(git_refs_heads_master + pfxlen); | ||
} | ||
else | ||
die("No such ref: %s", HEAD); | ||
} | ||
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int main(int argc, const char **argv) | ||
{ | ||
setup_git_directory(); | ||
switch (argc) { | ||
case 2: | ||
check_symref(argv[1]); | ||
break; | ||
case 3: | ||
create_symref(strdup(git_path("%s", argv[1])), argv[2]); | ||
break; | ||
default: | ||
usage(git_symbolic_ref_usage); | ||
} | ||
return 0; | ||
} |
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