From 2386535511d1181afd4e892e2a866ffe5e1d7d21 Mon Sep 17 00:00:00 2001 From: John Cai Date: Fri, 13 Oct 2023 17:39:29 +0000 Subject: [PATCH 1/2] attr: read attributes from HEAD when bare repo The motivation for 44451a2e5e (attr: teach "--attr-source=" global option to "git" , 2023-05-06), was to make it possible to use gitattributes with bare repositories. To make it easier to read gitattributes in bare repositories however, let's just make HEAD:.gitattributes the default. This is in line with how mailmap works, 8c473cecfd (mailmap: default mailmap.blob in bare repositories, 2012-12-13). Signed-off-by: John Cai Signed-off-by: Junio C Hamano --- attr.c | 12 +++++++++++- t/t0003-attributes.sh | 11 +++++++++++ t/t5001-archive-attr.sh | 2 +- 3 files changed, 23 insertions(+), 2 deletions(-) diff --git a/attr.c b/attr.c index ff0a3e7b61..efc061527f 100644 --- a/attr.c +++ b/attr.c @@ -1173,6 +1173,7 @@ static void collect_some_attrs(struct index_state *istate, } static const char *default_attr_source_tree_object_name; +static int ignore_bad_attr_tree; void set_git_attr_source(const char *tree_object_name) { @@ -1184,10 +1185,19 @@ static void compute_default_attr_source(struct object_id *attr_source) if (!default_attr_source_tree_object_name) default_attr_source_tree_object_name = getenv(GIT_ATTR_SOURCE_ENVIRONMENT); + if (!default_attr_source_tree_object_name && + startup_info->have_repository && + is_bare_repository()) { + default_attr_source_tree_object_name = "HEAD"; + ignore_bad_attr_tree = 1; + } + if (!default_attr_source_tree_object_name || !is_null_oid(attr_source)) return; - if (repo_get_oid_treeish(the_repository, default_attr_source_tree_object_name, attr_source)) + if (repo_get_oid_treeish(the_repository, + default_attr_source_tree_object_name, + attr_source) && !ignore_bad_attr_tree) die(_("bad --attr-source or GIT_ATTR_SOURCE")); } diff --git a/t/t0003-attributes.sh b/t/t0003-attributes.sh index 26e082f05b..5665cdc079 100755 --- a/t/t0003-attributes.sh +++ b/t/t0003-attributes.sh @@ -342,6 +342,17 @@ test_expect_success 'bare repository: check that .gitattribute is ignored' ' ) ' + +test_expect_success 'bare repo defaults to reading .gitattributes from HEAD' ' + test_when_finished rm -rf test bare_with_gitattribute && + git init test && + test_commit -C test gitattributes .gitattributes "f/path test=val" && + git clone --bare test bare_with_gitattribute && + echo "f/path: test: val" >expect && + git -C bare_with_gitattribute check-attr test -- f/path >actual && + test_cmp expect actual +' + test_expect_success 'bare repository: with --source' ' ( cd bare.git && diff --git a/t/t5001-archive-attr.sh b/t/t5001-archive-attr.sh index 0ff47a239d..eaf959d8f6 100755 --- a/t/t5001-archive-attr.sh +++ b/t/t5001-archive-attr.sh @@ -138,7 +138,7 @@ test_expect_success 'git archive with worktree attributes, bare' ' ' test_expect_missing bare-worktree/ignored -test_expect_exists bare-worktree/ignored-by-tree +test_expect_missing bare-worktree/ignored-by-tree test_expect_exists bare-worktree/ignored-by-worktree test_expect_success 'export-subst' ' From 9f9c40cf34c29d4ad700d9869435d159056fa6fb Mon Sep 17 00:00:00 2001 From: John Cai Date: Fri, 13 Oct 2023 17:39:30 +0000 Subject: [PATCH 2/2] attr: add attr.tree for setting the treeish to read attributes from 44451a2 (attr: teach "--attr-source=" global option to "git", 2023-05-06) provided the ability to pass in a treeish as the attr source. In the context of serving Git repositories as bare repos like we do at GitLab however, it would be easier to point --attr-source to HEAD for all commands by setting it once. Add a new config attr.tree that allows this. Signed-off-by: John Cai Signed-off-by: Junio C Hamano --- Documentation/config.txt | 2 ++ Documentation/config/attr.txt | 7 ++++ attr.c | 7 ++++ attr.h | 2 ++ config.c | 16 +++++++++ t/t0003-attributes.sh | 61 +++++++++++++++++++++++++++++++++++ 6 files changed, 95 insertions(+) create mode 100644 Documentation/config/attr.txt diff --git a/Documentation/config.txt b/Documentation/config.txt index 229b63a454..b1891c2b5a 100644 --- a/Documentation/config.txt +++ b/Documentation/config.txt @@ -371,6 +371,8 @@ other popular tools, and describe them in your documentation. include::config/advice.txt[] +include::config/attr.txt[] + include::config/core.txt[] include::config/add.txt[] diff --git a/Documentation/config/attr.txt b/Documentation/config/attr.txt new file mode 100644 index 0000000000..1a482d6af2 --- /dev/null +++ b/Documentation/config/attr.txt @@ -0,0 +1,7 @@ +attr.tree:: + A reference to a tree in the repository from which to read attributes, + instead of the `.gitattributes` file in the working tree. In a bare + repository, this defaults to `HEAD:.gitattributes`. If the value does + not resolve to a valid tree object, an empty tree is used instead. + When the `GIT_ATTR_SOURCE` environment variable or `--attr-source` + command line option are used, this configuration variable has no effect. diff --git a/attr.c b/attr.c index efc061527f..a4b818ca5a 100644 --- a/attr.c +++ b/attr.c @@ -24,6 +24,8 @@ #include "tree-walk.h" #include "object-name.h" +const char *git_attr_tree; + const char git_attr__true[] = "(builtin)true"; const char git_attr__false[] = "\0(builtin)false"; static const char git_attr__unknown[] = "(builtin)unknown"; @@ -1185,6 +1187,11 @@ static void compute_default_attr_source(struct object_id *attr_source) if (!default_attr_source_tree_object_name) default_attr_source_tree_object_name = getenv(GIT_ATTR_SOURCE_ENVIRONMENT); + if (!default_attr_source_tree_object_name && git_attr_tree) { + default_attr_source_tree_object_name = git_attr_tree; + ignore_bad_attr_tree = 1; + } + if (!default_attr_source_tree_object_name && startup_info->have_repository && is_bare_repository()) { diff --git a/attr.h b/attr.h index 2b745df405..127998ae01 100644 --- a/attr.h +++ b/attr.h @@ -236,4 +236,6 @@ const char *git_attr_global_file(void); /* Return whether the system gitattributes file is enabled and should be used. */ int git_attr_system_is_enabled(void); +extern const char *git_attr_tree; + #endif /* ATTR_H */ diff --git a/config.c b/config.c index 3846a37be9..fb6a2db1d9 100644 --- a/config.c +++ b/config.c @@ -18,6 +18,7 @@ #include "repository.h" #include "lockfile.h" #include "mailmap.h" +#include "attr.h" #include "exec-cmd.h" #include "strbuf.h" #include "quote.h" @@ -1904,6 +1905,18 @@ static int git_default_mailmap_config(const char *var, const char *value) return 0; } +static int git_default_attr_config(const char *var, const char *value) +{ + if (!strcmp(var, "attr.tree")) + return git_config_string(&git_attr_tree, var, value); + + /* + * Add other attribute related config variables here and to + * Documentation/config/attr.txt. + */ + return 0; +} + int git_default_config(const char *var, const char *value, const struct config_context *ctx, void *cb) { @@ -1927,6 +1940,9 @@ int git_default_config(const char *var, const char *value, if (starts_with(var, "mailmap.")) return git_default_mailmap_config(var, value); + if (starts_with(var, "attr.")) + return git_default_attr_config(var, value); + if (starts_with(var, "advice.") || starts_with(var, "color.advice")) return git_default_advice_config(var, value); diff --git a/t/t0003-attributes.sh b/t/t0003-attributes.sh index 5665cdc079..ecf43ab545 100755 --- a/t/t0003-attributes.sh +++ b/t/t0003-attributes.sh @@ -40,6 +40,10 @@ attr_check_source () { test_cmp expect actual && test_must_be_empty err + git $git_opts -c "attr.tree=$source" check-attr test -- "$path" >actual 2>err && + test_cmp expect actual && + test_must_be_empty err + GIT_ATTR_SOURCE="$source" git $git_opts check-attr test -- "$path" >actual 2>err && test_cmp expect actual && test_must_be_empty err @@ -342,6 +346,43 @@ test_expect_success 'bare repository: check that .gitattribute is ignored' ' ) ' +bad_attr_source_err="fatal: bad --attr-source or GIT_ATTR_SOURCE" + +test_expect_success '--attr-source is bad' ' + test_when_finished rm -rf empty && + git init empty && + ( + cd empty && + echo "$bad_attr_source_err" >expect_err && + test_must_fail git --attr-source=HEAD check-attr test -- f/path 2>err && + test_cmp expect_err err + ) +' + +test_expect_success 'attr.tree when HEAD is unborn' ' + test_when_finished rm -rf empty && + git init empty && + ( + cd empty && + echo "f/path: test: unspecified" >expect && + git -c attr.tree=HEAD check-attr test -- f/path >actual 2>err && + test_must_be_empty err && + test_cmp expect actual + ) +' + +test_expect_success 'bad attr source defaults to reading .gitattributes file' ' + test_when_finished rm -rf empty && + git init empty && + ( + cd empty && + echo "f/path test=val" >.gitattributes && + echo "f/path: test: val" >expect && + git -c attr.tree=HEAD check-attr test -- f/path >actual 2>err && + test_must_be_empty err && + test_cmp expect actual + ) +' test_expect_success 'bare repo defaults to reading .gitattributes from HEAD' ' test_when_finished rm -rf test bare_with_gitattribute && @@ -353,6 +394,26 @@ test_expect_success 'bare repo defaults to reading .gitattributes from HEAD' ' test_cmp expect actual ' +test_expect_success 'precedence of --attr-source, GIT_ATTR_SOURCE, then attr.tree' ' + test_when_finished rm -rf empty && + git init empty && + ( + cd empty && + git checkout -b attr-source && + test_commit "val1" .gitattributes "f/path test=val1" && + git checkout -b attr-tree && + test_commit "val2" .gitattributes "f/path test=val2" && + git checkout attr-source && + echo "f/path: test: val1" >expect && + GIT_ATTR_SOURCE=attr-source git -c attr.tree=attr-tree --attr-source=attr-source \ + check-attr test -- f/path >actual && + test_cmp expect actual && + GIT_ATTR_SOURCE=attr-source git -c attr.tree=attr-tree \ + check-attr test -- f/path >actual && + test_cmp expect actual + ) +' + test_expect_success 'bare repository: with --source' ' ( cd bare.git &&