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[PATCH] Add global and system-wide gitattributes

From
Matthieu Moy <matthieu.moy@imag.fr>
Date
Aug 31, 2010, 22:42 UTC
Message-ID
<1283294563-3013-1-git-send-email-Matthieu.Moy@imag.fr>
In-Reply-To
<vpqbp8i2yns.fsf@bauges.imag.fr>
From: Petr Onderka <gsvick@gmail.com>

Allow gitattributes to be set globally and system wide. This way, settings for particular file types can be set in one place and apply for all user's repositories.

The location of system-wide attributes file is $(prefix)/etc/gitattributes. The location of the global file can be configured by setting core.attributesfile.

Some parts of the code were copied from the implementation of the same functionality in config.c.

Signed-off-by: Petr Onderka <gsvick@gmail.com>
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
---
Here it is!
 Documentation/config.txt        |    6 ++++
 Documentation/gitattributes.txt |   13 +++++++--
 Makefile                        |    6 ++++
 attr.c                          |   52 ++++++++++++++++++++++++++++++++++++++-
 configure.ac                    |   10 ++++++-
 t/t0003-attributes.sh           |   13 +++++++++
 6 files changed, 95 insertions(+), 5 deletions(-)
diff --git a/Documentation/config.txt b/Documentation/config.txt
index 05ec3fe..0e15e72 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -450,6 +450,12 @@ core.excludesfile::
 	to the value of `$HOME` and "{tilde}user/" to the specified user's
 	home directory.  See linkgit:gitignore[5].
 
+core.attributesfile::
+	In addition to '.gitattributes' (per-directory) and
+	'.git/info/attributes', git looks into this file for attributes
+	(see linkgit:gitattributes[5]). Path expansions are made the same
+	way as for `core.excludesfile`.
+
 core.editor::
 	Commands such as `commit` and `tag` that lets you edit
 	messages by launching an editor uses the value of this
diff --git a/Documentation/gitattributes.txt b/Documentation/gitattributes.txt
index 2e2370c..ebd4852 100644
--- a/Documentation/gitattributes.txt
+++ b/Documentation/gitattributes.txt
@@ -62,14 +62,21 @@ consults `$GIT_DIR/info/attributes` file (which has the highest
 precedence), `.gitattributes` file in the same directory as the
 path in question, and its parent directories up to the toplevel of the
 work tree (the further the directory that contains `.gitattributes`
-is from the path in question, the lower its precedence).
+is from the path in question, the lower its precedence). Finally
+global and system-wide files are considered (they have the lowest
+precedence).
 
 If you wish to affect only a single repository (i.e., to assign
-attributes to files that are particular to one user's workflow), then
+attributes to files that are particular to
+one user's workflow for that repository), then
 attributes should be placed in the `$GIT_DIR/info/attributes` file.
 Attributes which should be version-controlled and distributed to other
 repositories (i.e., attributes of interest to all users) should go into
-`.gitattributes` files.
+`.gitattributes` files. Attributes that should affect all repositories
+for a single user should be placed in a file specified by the
+`core.attributesfile` configuration option (see linkgit:git-config[1]).
+Attributes for all users on a system should be placed in the
+`$(prefix)/etc/gitattributes` file.
 
 Sometimes you would need to override an setting of an attribute
 for a path to `unspecified` state.  This can be done by listing
diff --git a/Makefile b/Makefile
index b4745a5..fdb7b4e 100644
--- a/Makefile
+++ b/Makefile
@@ -268,6 +268,7 @@ STRIP ?= strip
 #   infodir
 #   htmldir
 #   ETC_GITCONFIG (but not sysconfdir)
+#   ETC_GITATTRIBUTES
 # can be specified as a relative path some/where/else;
 # this is interpreted as relative to $(prefix) and "git" at
 # runtime figures out where they are based on the path to the executable.
@@ -286,9 +287,11 @@ htmldir = share/doc/git-doc
 ifeq ($(prefix),/usr)
 sysconfdir = /etc
 ETC_GITCONFIG = $(sysconfdir)/gitconfig
+ETC_GITATTRIBUTES = $(sysconfdir)/gitattributes
 else
 sysconfdir = $(prefix)/etc
 ETC_GITCONFIG = etc/gitconfig
+ETC_GITATTRIBUTES = etc/gitattributes
 endif
 lib = lib
 # DESTDIR=
@@ -1502,6 +1505,7 @@ endif
 
 SHA1_HEADER_SQ = $(subst ','\'',$(SHA1_HEADER))
 ETC_GITCONFIG_SQ = $(subst ','\'',$(ETC_GITCONFIG))
+ETC_GITATTRIBUTES_SQ = $(subst ','\'',$(ETC_GITATTRIBUTES))
 
 DESTDIR_SQ = $(subst ','\'',$(DESTDIR))
 bindir_SQ = $(subst ','\'',$(bindir))
@@ -1873,6 +1877,8 @@ builtin/init-db.s builtin/init-db.o: EXTRA_CPPFLAGS = \
 
 config.s config.o: EXTRA_CPPFLAGS = -DETC_GITCONFIG='"$(ETC_GITCONFIG_SQ)"'
 
+attr.s attr.o: EXTRA_CPPFLAGS = -DETC_GITATTRIBUTES='"$(ETC_GITATTRIBUTES_SQ)"'
+
 http.s http.o: EXTRA_CPPFLAGS = -DGIT_HTTP_USER_AGENT='"git/$(GIT_VERSION)"'
 
 ifdef NO_EXPAT
diff --git a/attr.c b/attr.c
index 8ba606c..c94211a 100644
--- a/attr.c
+++ b/attr.c
@@ -1,5 +1,6 @@
 #define NO_THE_INDEX_COMPATIBILITY_MACROS
 #include "cache.h"
+#include "exec_cmd.h"
 #include "attr.h"
 
 const char git_attr__true[] = "(builtin)true";
@@ -10,6 +11,8 @@ static const char git_attr__unknown[] = "(builtin)unknown";
 #define ATTR__UNSET NULL
 #define ATTR__UNKNOWN git_attr__unknown
 
+static const char *attributes_file;
+
 /*
  * The basic design decision here is that we are not going to have
  * insanely large number of attributes.
@@ -462,6 +465,32 @@ static void drop_attr_stack(void)
 	}
 }
 
+const char *git_etc_gitattributes(void)
+{
+	static const char *system_wide;
+	if (!system_wide)
+		system_wide = system_path(ETC_GITATTRIBUTES);
+	return system_wide;
+}
+
+int git_attr_system(void)
+{
+	return !git_env_bool("GIT_ATTR_NOSYSTEM", 0);
+}
+
+int git_attr_global(void)
+{
+	return !git_env_bool("GIT_ATTR_NOGLOBAL", 0);
+}
+
+static int git_attr_config(const char *var, const char *value, void *dummy)
+{
+	if (!strcmp(var, "core.attributesfile"))
+		return git_config_pathname(&attributes_file, var, value);
+	
+	return 0;
+}
+
 static void bootstrap_attr_stack(void)
 {
 	if (!attr_stack) {
@@ -472,6 +501,25 @@ static void bootstrap_attr_stack(void)
 		elem->prev = attr_stack;
 		attr_stack = elem;
 
+		if (git_attr_system()) {
+			elem = read_attr_from_file(git_etc_gitattributes(), 1);
+			if (elem) {
+				elem->origin = NULL;
+				elem->prev = attr_stack;
+				attr_stack = elem;
+			}
+		}
+
+		git_config(git_attr_config, NULL);
+		if (git_attr_global() && attributes_file) {
+			elem = read_attr_from_file(attributes_file, 1);
+			if (elem) {
+				elem->origin = NULL;
+				elem->prev = attr_stack;
+				attr_stack = elem;
+			}
+		}
+
 		if (!is_bare_repository() || direction == GIT_ATTR_INDEX) {
 			elem = read_attr(GITATTRIBUTES_FILE, 1);
 			elem->origin = strdup("");
@@ -499,7 +547,9 @@ static void prepare_attr_stack(const char *path, int dirlen)
 
 	/*
 	 * At the bottom of the attribute stack is the built-in
-	 * set of attribute definitions.  Then, contents from
+	 * set of attribute definitions, followed by the contents
+	 * of $(prefix)/etc/gitattributes and a file specified by
+	 * core.attributesfile.  Then, contents from
 	 * .gitattribute files from directories closer to the
 	 * root to the ones in deeper directories are pushed
 	 * to the stack.  Finally, at the very top of the stack
diff --git a/configure.ac b/configure.ac
index 5601e8b..c5b3a41 100644
--- a/configure.ac
+++ b/configure.ac
@@ -282,7 +282,15 @@ GIT_PARSE_WITH(iconv))
 GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG,
 			Use VALUE instead of /etc/gitconfig as the
 			global git configuration file.
-			If VALUE is not fully qualified it will be interpretted
+			If VALUE is not fully qualified it will be interpreted
+			as a path relative to the computed prefix at runtime.)
+
+#
+# Allow user to set ETC_GITATTRIBUTES variable
+GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES,
+			Use VALUE instead of /etc/gitattributes as the
+			global git attributes file.
+			If VALUE is not fully qualified it will be interpreted
 			as a path relative to the computed prefix at runtime.)
 
 #
diff --git a/t/t0003-attributes.sh b/t/t0003-attributes.sh
index 114967a..b884bb7 100755
--- a/t/t0003-attributes.sh
+++ b/t/t0003-attributes.sh
@@ -35,6 +35,9 @@ test_expect_success 'setup' '
 		echo "d/* test=a/b/d/*"
 		echo "d/yes notest"
 	) >a/b/.gitattributes
+	(
+		echo "global test=global"
+	) >$HOME/global-gitattributes
 
 '
 
@@ -56,6 +59,16 @@ test_expect_success 'attribute test' '
 
 '
 
+test_expect_success 'core.attributesfile' '
+	attr_check global unspecified &&
+	git config core.attributesfile "$HOME/global-gitattributes" &&
+	attr_check global global &&
+	git config core.attributesfile "~/global-gitattributes" &&
+	attr_check global global &&
+	echo "global test=precedence" >> .gitattributes &&
+	attr_check global precedence
+'
+
 test_expect_success 'attribute test: read paths from stdin' '
 
 	cat <<EOF > expect

-- 
1.7.2.2.175.ga619d.dirty
Previous: Matthieu MoyNext: Junio C Hamano
Message 31 of 36 in “Add global and system-wide gitattributes”
  1. Add global and system-wide gitattributesPetr Onderka, Aug 11, 2010
  2. Henrik GrubbströmAug 11, 2010
  3. Petr OnderkaAug 11, 2010
  4. Matthieu MoyAug 11, 2010
  5. Junio C HamanoAug 11, 2010
  6. Petr OnderkaAug 16, 2010
  7. Add global and system-wide gitattributesPetr Onderka, Aug 16, 2010
  8. Štěpán NěmecAug 25, 2010
  9. Matthieu MoyAug 28, 2010
  10. Junio C HamanoAug 30, 2010
  11. Štěpán NěmecAug 30, 2010
  12. Matthieu MoyAug 28, 2010
  13. core.attributesfile: a fix, a simplification, and a testMatthieu Moy, Aug 28, 2010
  14. Štěpán NěmecAug 29, 2010
  15. Junio C HamanoAug 30, 2010
  16. Matthieu MoyAug 30, 2010
  17. Junio C HamanoAug 30, 2010
  18. Junio C HamanoAug 30, 2010
  19. Matthieu MoyAug 30, 2010
  20. 1/3 tests: factor HOME=$(pwd) in test-lib.shMatthieu Moy, Aug 30, 2010
  21. Ævar Arnfjörð BjarmasonAug 31, 2010
  22. Ævar Arnfjörð BjarmasonSep 1, 2010
  23. Junio C HamanoSep 1, 2010
  24. Ævar Arnfjörð BjarmasonSep 1, 2010
  25. Matthieu MoySep 1, 2010
  26. 2/3 don't write to git_log_output_encoding outside git_config()Matthieu Moy, Aug 30, 2010
  27. Matthieu MoySep 2, 2010
  28. Junio C HamanoSep 2, 2010
  29. 3/3 Add global and system-wide gitattributesMatthieu Moy, Aug 30, 2010
  30. Matthieu MoyAug 31, 2010
  31. Add global and system-wide gitattributesMatthieu Moy, Aug 31, 2010
  32. Junio C HamanoAug 31, 2010
  33. tests: factor HOME=$(pwd) in test-lib.shMatthieu Moy, Aug 30, 2010
  34. Ævar Arnfjörð BjarmasonAug 30, 2010
  35. Matthieu MoyAug 30, 2010
  36. Ævar Arnfjörð BjarmasonAug 30, 2010

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