mirror of
https://github.com/git/git
synced 2024-10-02 14:45:21 +00:00
Merge branch 'kn/clarify-update-ref-doc'
Doc update, as a preparation to enhance "git update-ref --stdin". * kn/clarify-update-ref-doc: githooks: use {old,new}-oid instead of {old,new}-value update-ref: use {old,new}-oid instead of {old,new}value
This commit is contained in:
commit
280b74ce18
|
@ -8,21 +8,21 @@ git-update-ref - Update the object name stored in a ref safely
|
|||
SYNOPSIS
|
||||
--------
|
||||
[verse]
|
||||
'git update-ref' [-m <reason>] [--no-deref] (-d <ref> [<oldvalue>] | [--create-reflog] <ref> <newvalue> [<oldvalue>] | --stdin [-z])
|
||||
'git update-ref' [-m <reason>] [--no-deref] (-d <ref> [<old-oid>] | [--create-reflog] <ref> <new-oid> [<old-oid>] | --stdin [-z])
|
||||
|
||||
DESCRIPTION
|
||||
-----------
|
||||
Given two arguments, stores the <newvalue> in the <ref>, possibly
|
||||
Given two arguments, stores the <new-oid> in the <ref>, possibly
|
||||
dereferencing the symbolic refs. E.g. `git update-ref HEAD
|
||||
<newvalue>` updates the current branch head to the new object.
|
||||
<new-oid>` updates the current branch head to the new object.
|
||||
|
||||
Given three arguments, stores the <newvalue> in the <ref>,
|
||||
Given three arguments, stores the <new-oid> in the <ref>,
|
||||
possibly dereferencing the symbolic refs, after verifying that
|
||||
the current value of the <ref> matches <oldvalue>.
|
||||
E.g. `git update-ref refs/heads/master <newvalue> <oldvalue>`
|
||||
updates the master branch head to <newvalue> only if its current
|
||||
value is <oldvalue>. You can specify 40 "0" or an empty string
|
||||
as <oldvalue> to make sure that the ref you are creating does
|
||||
the current value of the <ref> matches <old-oid>.
|
||||
E.g. `git update-ref refs/heads/master <new-oid> <old-oid>`
|
||||
updates the master branch head to <new-oid> only if its current
|
||||
value is <old-oid>. You can specify 40 "0" or an empty string
|
||||
as <old-oid> to make sure that the ref you are creating does
|
||||
not exist.
|
||||
|
||||
It also allows a "ref" file to be a symbolic pointer to another
|
||||
|
@ -56,15 +56,15 @@ ref symlink to some other tree, if you have copied a whole
|
|||
archive by creating a symlink tree).
|
||||
|
||||
With `-d` flag, it deletes the named <ref> after verifying it
|
||||
still contains <oldvalue>.
|
||||
still contains <old-oid>.
|
||||
|
||||
With `--stdin`, update-ref reads instructions from standard input and
|
||||
performs all modifications together. Specify commands of the form:
|
||||
|
||||
update SP <ref> SP <newvalue> [SP <oldvalue>] LF
|
||||
create SP <ref> SP <newvalue> LF
|
||||
delete SP <ref> [SP <oldvalue>] LF
|
||||
verify SP <ref> [SP <oldvalue>] LF
|
||||
update SP <ref> SP <new-oid> [SP <old-oid>] LF
|
||||
create SP <ref> SP <new-oid> LF
|
||||
delete SP <ref> [SP <old-oid>] LF
|
||||
verify SP <ref> [SP <old-oid>] LF
|
||||
option SP <opt> LF
|
||||
start LF
|
||||
prepare LF
|
||||
|
@ -82,10 +82,10 @@ specify a missing value, omit the value and its preceding SP entirely.
|
|||
Alternatively, use `-z` to specify in NUL-terminated format, without
|
||||
quoting:
|
||||
|
||||
update SP <ref> NUL <newvalue> NUL [<oldvalue>] NUL
|
||||
create SP <ref> NUL <newvalue> NUL
|
||||
delete SP <ref> NUL [<oldvalue>] NUL
|
||||
verify SP <ref> NUL [<oldvalue>] NUL
|
||||
update SP <ref> NUL <new-oid> NUL [<old-oid>] NUL
|
||||
create SP <ref> NUL <new-oid> NUL
|
||||
delete SP <ref> NUL [<old-oid>] NUL
|
||||
verify SP <ref> NUL [<old-oid>] NUL
|
||||
option SP <opt> NUL
|
||||
start NUL
|
||||
prepare NUL
|
||||
|
@ -100,22 +100,22 @@ recognizes as an object name. Commands in any other format or a
|
|||
repeated <ref> produce an error. Command meanings are:
|
||||
|
||||
update::
|
||||
Set <ref> to <newvalue> after verifying <oldvalue>, if given.
|
||||
Specify a zero <newvalue> to ensure the ref does not exist
|
||||
after the update and/or a zero <oldvalue> to make sure the
|
||||
Set <ref> to <new-oid> after verifying <old-oid>, if given.
|
||||
Specify a zero <new-oid> to ensure the ref does not exist
|
||||
after the update and/or a zero <old-oid> to make sure the
|
||||
ref does not exist before the update.
|
||||
|
||||
create::
|
||||
Create <ref> with <newvalue> after verifying it does not
|
||||
exist. The given <newvalue> may not be zero.
|
||||
Create <ref> with <new-oid> after verifying it does not
|
||||
exist. The given <new-oid> may not be zero.
|
||||
|
||||
delete::
|
||||
Delete <ref> after verifying it exists with <oldvalue>, if
|
||||
given. If given, <oldvalue> may not be zero.
|
||||
Delete <ref> after verifying it exists with <old-oid>, if
|
||||
given. If given, <old-oid> may not be zero.
|
||||
|
||||
verify::
|
||||
Verify <ref> against <oldvalue> but do not change it. If
|
||||
<oldvalue> is zero or missing, the ref must not exist.
|
||||
Verify <ref> against <old-oid> but do not change it. If
|
||||
<old-oid> is zero or missing, the ref must not exist.
|
||||
|
||||
option::
|
||||
Modify the behavior of the next command naming a <ref>.
|
||||
|
@ -141,7 +141,7 @@ abort::
|
|||
Abort the transaction, releasing all locks if the transaction is in
|
||||
prepared state.
|
||||
|
||||
If all <ref>s can be locked with matching <oldvalue>s
|
||||
If all <ref>s can be locked with matching <old-oid>s
|
||||
simultaneously, all modifications are performed. Otherwise, no
|
||||
modifications are performed. Note that while each individual
|
||||
<ref> is updated or deleted atomically, a concurrent reader may
|
||||
|
@ -161,7 +161,7 @@ formatted as:
|
|||
|
||||
Where "oldsha1" is the 40 character hexadecimal value previously
|
||||
stored in <ref>, "newsha1" is the 40 character hexadecimal value of
|
||||
<newvalue> and "committer" is the committer's name, email address
|
||||
<new-oid> and "committer" is the committer's name, email address
|
||||
and date in the standard Git committer ident format.
|
||||
|
||||
Optionally with -m:
|
||||
|
|
|
@ -275,12 +275,12 @@ This hook executes once for the receive operation. It takes no
|
|||
arguments, but for each ref to be updated it receives on standard
|
||||
input a line of the format:
|
||||
|
||||
<old-value> SP <new-value> SP <ref-name> LF
|
||||
<old-oid> SP <new-oid> SP <ref-name> LF
|
||||
|
||||
where `<old-value>` is the old object name stored in the ref,
|
||||
`<new-value>` is the new object name to be stored in the ref and
|
||||
where `<old-oid>` is the old object name stored in the ref,
|
||||
`<new-oid>` is the new object name to be stored in the ref and
|
||||
`<ref-name>` is the full name of the ref.
|
||||
When creating a new ref, `<old-value>` is the all-zeroes object name.
|
||||
When creating a new ref, `<old-oid>` is the all-zeroes object name.
|
||||
|
||||
If the hook exits with non-zero status, none of the refs will be
|
||||
updated. If the hook exits with zero, updating of individual refs can
|
||||
|
@ -503,13 +503,13 @@ given reference transaction is in:
|
|||
For each reference update that was added to the transaction, the hook
|
||||
receives on standard input a line of the format:
|
||||
|
||||
<old-value> SP <new-value> SP <ref-name> LF
|
||||
<old-oid> SP <new-oid> SP <ref-name> LF
|
||||
|
||||
where `<old-value>` is the old object name passed into the reference
|
||||
transaction, `<new-value>` is the new object name to be stored in the
|
||||
where `<old-oid>` is the old object name passed into the reference
|
||||
transaction, `<new-oid>` is the new object name to be stored in the
|
||||
ref and `<ref-name>` is the full name of the ref. When force updating
|
||||
the reference regardless of its current value or when the reference is
|
||||
to be created anew, `<old-value>` is the all-zeroes object name. To
|
||||
to be created anew, `<old-oid>` is the all-zeroes object name. To
|
||||
distinguish these cases, you can inspect the current value of
|
||||
`<ref-name>` via `git rev-parse`.
|
||||
|
||||
|
|
|
@ -9,8 +9,8 @@
|
|||
#include "repository.h"
|
||||
|
||||
static const char * const git_update_ref_usage[] = {
|
||||
N_("git update-ref [<options>] -d <refname> [<old-val>]"),
|
||||
N_("git update-ref [<options>] <refname> <new-val> [<old-val>]"),
|
||||
N_("git update-ref [<options>] -d <refname> [<old-oid>]"),
|
||||
N_("git update-ref [<options>] <refname> <new-oid> [<old-oid>]"),
|
||||
N_("git update-ref [<options>] --stdin [-z]"),
|
||||
NULL
|
||||
};
|
||||
|
@ -77,14 +77,14 @@ static char *parse_refname(const char **next)
|
|||
}
|
||||
|
||||
/*
|
||||
* The value being parsed is <oldvalue> (as opposed to <newvalue>; the
|
||||
* The value being parsed is <old-oid> (as opposed to <new-oid>; the
|
||||
* difference affects which error messages are generated):
|
||||
*/
|
||||
#define PARSE_SHA1_OLD 0x01
|
||||
|
||||
/*
|
||||
* For backwards compatibility, accept an empty string for update's
|
||||
* <newvalue> in binary mode to be equivalent to specifying zeros.
|
||||
* <new-oid> in binary mode to be equivalent to specifying zeros.
|
||||
*/
|
||||
#define PARSE_SHA1_ALLOW_EMPTY 0x02
|
||||
|
||||
|
@ -140,7 +140,7 @@ static int parse_next_oid(const char **next, const char *end,
|
|||
goto invalid;
|
||||
} else if (flags & PARSE_SHA1_ALLOW_EMPTY) {
|
||||
/* With -z, treat an empty value as all zeros: */
|
||||
warning("%s %s: missing <newvalue>, treating as zero",
|
||||
warning("%s %s: missing <new-oid>, treating as zero",
|
||||
command, refname);
|
||||
oidclr(oid);
|
||||
} else {
|
||||
|
@ -158,14 +158,14 @@ static int parse_next_oid(const char **next, const char *end,
|
|||
|
||||
invalid:
|
||||
die(flags & PARSE_SHA1_OLD ?
|
||||
"%s %s: invalid <oldvalue>: %s" :
|
||||
"%s %s: invalid <newvalue>: %s",
|
||||
"%s %s: invalid <old-oid>: %s" :
|
||||
"%s %s: invalid <new-oid>: %s",
|
||||
command, refname, arg.buf);
|
||||
|
||||
eof:
|
||||
die(flags & PARSE_SHA1_OLD ?
|
||||
"%s %s: unexpected end of input when reading <oldvalue>" :
|
||||
"%s %s: unexpected end of input when reading <newvalue>",
|
||||
"%s %s: unexpected end of input when reading <old-oid>" :
|
||||
"%s %s: unexpected end of input when reading <new-oid>",
|
||||
command, refname);
|
||||
}
|
||||
|
||||
|
@ -194,7 +194,7 @@ static void parse_cmd_update(struct ref_transaction *transaction,
|
|||
|
||||
if (parse_next_oid(&next, end, &new_oid, "update", refname,
|
||||
PARSE_SHA1_ALLOW_EMPTY))
|
||||
die("update %s: missing <newvalue>", refname);
|
||||
die("update %s: missing <new-oid>", refname);
|
||||
|
||||
have_old = !parse_next_oid(&next, end, &old_oid, "update", refname,
|
||||
PARSE_SHA1_OLD);
|
||||
|
@ -225,10 +225,10 @@ static void parse_cmd_create(struct ref_transaction *transaction,
|
|||
die("create: missing <ref>");
|
||||
|
||||
if (parse_next_oid(&next, end, &new_oid, "create", refname, 0))
|
||||
die("create %s: missing <newvalue>", refname);
|
||||
die("create %s: missing <new-oid>", refname);
|
||||
|
||||
if (is_null_oid(&new_oid))
|
||||
die("create %s: zero <newvalue>", refname);
|
||||
die("create %s: zero <new-oid>", refname);
|
||||
|
||||
if (*next != line_termination)
|
||||
die("create %s: extra input: %s", refname, next);
|
||||
|
@ -260,7 +260,7 @@ static void parse_cmd_delete(struct ref_transaction *transaction,
|
|||
have_old = 0;
|
||||
} else {
|
||||
if (is_null_oid(&old_oid))
|
||||
die("delete %s: zero <oldvalue>", refname);
|
||||
die("delete %s: zero <old-oid>", refname);
|
||||
have_old = 1;
|
||||
}
|
||||
|
||||
|
|
|
@ -622,7 +622,7 @@ test_expect_success 'stdin fails create with no ref' '
|
|||
test_expect_success 'stdin fails create with no new value' '
|
||||
echo "create $a" >stdin &&
|
||||
test_must_fail git update-ref --stdin <stdin 2>err &&
|
||||
grep "fatal: create $a: missing <newvalue>" err
|
||||
grep "fatal: create $a: missing <new-oid>" err
|
||||
'
|
||||
|
||||
test_expect_success 'stdin fails create with too many arguments' '
|
||||
|
@ -640,7 +640,7 @@ test_expect_success 'stdin fails update with no ref' '
|
|||
test_expect_success 'stdin fails update with no new value' '
|
||||
echo "update $a" >stdin &&
|
||||
test_must_fail git update-ref --stdin <stdin 2>err &&
|
||||
grep "fatal: update $a: missing <newvalue>" err
|
||||
grep "fatal: update $a: missing <new-oid>" err
|
||||
'
|
||||
|
||||
test_expect_success 'stdin fails update with too many arguments' '
|
||||
|
@ -765,21 +765,21 @@ test_expect_success 'stdin update ref fails with wrong old value' '
|
|||
test_expect_success 'stdin update ref fails with bad old value' '
|
||||
echo "update $c $m does-not-exist" >stdin &&
|
||||
test_must_fail git update-ref --stdin <stdin 2>err &&
|
||||
grep "fatal: update $c: invalid <oldvalue>: does-not-exist" err &&
|
||||
grep "fatal: update $c: invalid <old-oid>: does-not-exist" err &&
|
||||
test_must_fail git rev-parse --verify -q $c
|
||||
'
|
||||
|
||||
test_expect_success 'stdin create ref fails with bad new value' '
|
||||
echo "create $c does-not-exist" >stdin &&
|
||||
test_must_fail git update-ref --stdin <stdin 2>err &&
|
||||
grep "fatal: create $c: invalid <newvalue>: does-not-exist" err &&
|
||||
grep "fatal: create $c: invalid <new-oid>: does-not-exist" err &&
|
||||
test_must_fail git rev-parse --verify -q $c
|
||||
'
|
||||
|
||||
test_expect_success 'stdin create ref fails with zero new value' '
|
||||
echo "create $c " >stdin &&
|
||||
test_must_fail git update-ref --stdin <stdin 2>err &&
|
||||
grep "fatal: create $c: zero <newvalue>" err &&
|
||||
grep "fatal: create $c: zero <new-oid>" err &&
|
||||
test_must_fail git rev-parse --verify -q $c
|
||||
'
|
||||
|
||||
|
@ -803,7 +803,7 @@ test_expect_success 'stdin delete ref fails with wrong old value' '
|
|||
test_expect_success 'stdin delete ref fails with zero old value' '
|
||||
echo "delete $a " >stdin &&
|
||||
test_must_fail git update-ref --stdin <stdin 2>err &&
|
||||
grep "fatal: delete $a: zero <oldvalue>" err &&
|
||||
grep "fatal: delete $a: zero <old-oid>" err &&
|
||||
git rev-parse $m >expect &&
|
||||
git rev-parse $a >actual &&
|
||||
test_cmp expect actual
|
||||
|
@ -1027,7 +1027,7 @@ test_expect_success 'stdin -z fails create with no ref' '
|
|||
test_expect_success 'stdin -z fails create with no new value' '
|
||||
printf $F "create $a" >stdin &&
|
||||
test_must_fail git update-ref -z --stdin <stdin 2>err &&
|
||||
grep "fatal: create $a: unexpected end of input when reading <newvalue>" err
|
||||
grep "fatal: create $a: unexpected end of input when reading <new-oid>" err
|
||||
'
|
||||
|
||||
test_expect_success 'stdin -z fails create with too many arguments' '
|
||||
|
@ -1045,27 +1045,27 @@ test_expect_success 'stdin -z fails update with no ref' '
|
|||
test_expect_success 'stdin -z fails update with too few args' '
|
||||
printf $F "update $a" "$m" >stdin &&
|
||||
test_must_fail git update-ref -z --stdin <stdin 2>err &&
|
||||
grep "fatal: update $a: unexpected end of input when reading <oldvalue>" err
|
||||
grep "fatal: update $a: unexpected end of input when reading <old-oid>" err
|
||||
'
|
||||
|
||||
test_expect_success 'stdin -z emits warning with empty new value' '
|
||||
git update-ref $a $m &&
|
||||
printf $F "update $a" "" "" >stdin &&
|
||||
git update-ref -z --stdin <stdin 2>err &&
|
||||
grep "warning: update $a: missing <newvalue>, treating as zero" err &&
|
||||
grep "warning: update $a: missing <new-oid>, treating as zero" err &&
|
||||
test_must_fail git rev-parse --verify -q $a
|
||||
'
|
||||
|
||||
test_expect_success 'stdin -z fails update with no new value' '
|
||||
printf $F "update $a" >stdin &&
|
||||
test_must_fail git update-ref -z --stdin <stdin 2>err &&
|
||||
grep "fatal: update $a: unexpected end of input when reading <newvalue>" err
|
||||
grep "fatal: update $a: unexpected end of input when reading <new-oid>" err
|
||||
'
|
||||
|
||||
test_expect_success 'stdin -z fails update with no old value' '
|
||||
printf $F "update $a" "$m" >stdin &&
|
||||
test_must_fail git update-ref -z --stdin <stdin 2>err &&
|
||||
grep "fatal: update $a: unexpected end of input when reading <oldvalue>" err
|
||||
grep "fatal: update $a: unexpected end of input when reading <old-oid>" err
|
||||
'
|
||||
|
||||
test_expect_success 'stdin -z fails update with too many arguments' '
|
||||
|
@ -1083,7 +1083,7 @@ test_expect_success 'stdin -z fails delete with no ref' '
|
|||
test_expect_success 'stdin -z fails delete with no old value' '
|
||||
printf $F "delete $a" >stdin &&
|
||||
test_must_fail git update-ref -z --stdin <stdin 2>err &&
|
||||
grep "fatal: delete $a: unexpected end of input when reading <oldvalue>" err
|
||||
grep "fatal: delete $a: unexpected end of input when reading <old-oid>" err
|
||||
'
|
||||
|
||||
test_expect_success 'stdin -z fails delete with too many arguments' '
|
||||
|
@ -1101,7 +1101,7 @@ test_expect_success 'stdin -z fails verify with too many arguments' '
|
|||
test_expect_success 'stdin -z fails verify with no old value' '
|
||||
printf $F "verify $a" >stdin &&
|
||||
test_must_fail git update-ref -z --stdin <stdin 2>err &&
|
||||
grep "fatal: verify $a: unexpected end of input when reading <oldvalue>" err
|
||||
grep "fatal: verify $a: unexpected end of input when reading <old-oid>" err
|
||||
'
|
||||
|
||||
test_expect_success 'stdin -z fails option with unknown name' '
|
||||
|
@ -1160,7 +1160,7 @@ test_expect_success 'stdin -z update ref fails with wrong old value' '
|
|||
test_expect_success 'stdin -z update ref fails with bad old value' '
|
||||
printf $F "update $c" "$m" "does-not-exist" >stdin &&
|
||||
test_must_fail git update-ref -z --stdin <stdin 2>err &&
|
||||
grep "fatal: update $c: invalid <oldvalue>: does-not-exist" err &&
|
||||
grep "fatal: update $c: invalid <old-oid>: does-not-exist" err &&
|
||||
test_must_fail git rev-parse --verify -q $c
|
||||
'
|
||||
|
||||
|
@ -1178,14 +1178,14 @@ test_expect_success 'stdin -z create ref fails with bad new value' '
|
|||
git update-ref -d "$c" &&
|
||||
printf $F "create $c" "does-not-exist" >stdin &&
|
||||
test_must_fail git update-ref -z --stdin <stdin 2>err &&
|
||||
grep "fatal: create $c: invalid <newvalue>: does-not-exist" err &&
|
||||
grep "fatal: create $c: invalid <new-oid>: does-not-exist" err &&
|
||||
test_must_fail git rev-parse --verify -q $c
|
||||
'
|
||||
|
||||
test_expect_success 'stdin -z create ref fails with empty new value' '
|
||||
printf $F "create $c" "" >stdin &&
|
||||
test_must_fail git update-ref -z --stdin <stdin 2>err &&
|
||||
grep "fatal: create $c: missing <newvalue>" err &&
|
||||
grep "fatal: create $c: missing <new-oid>" err &&
|
||||
test_must_fail git rev-parse --verify -q $c
|
||||
'
|
||||
|
||||
|
@ -1209,7 +1209,7 @@ test_expect_success 'stdin -z delete ref fails with wrong old value' '
|
|||
test_expect_success 'stdin -z delete ref fails with zero old value' '
|
||||
printf $F "delete $a" "$Z" >stdin &&
|
||||
test_must_fail git update-ref -z --stdin <stdin 2>err &&
|
||||
grep "fatal: delete $a: zero <oldvalue>" err &&
|
||||
grep "fatal: delete $a: zero <old-oid>" err &&
|
||||
git rev-parse $m >expect &&
|
||||
git rev-parse $a >actual &&
|
||||
test_cmp expect actual
|
||||
|
|
Loading…
Reference in a new issue