1 files changed, 83 insertions, 0 deletions
diff --git a/environment.c b/environment.c
new file mode 100644
index 0000000000..2e79eab18d
--- /dev/null
+++ b/environment.c
@@ -0,0 +1,83 @@
+/*
+ * We put all the git config variables in this same object
+ * file, so that programs can link against the config parser
+ * without having to link against all the rest of git.
+ *
+ * In particular, no need to bring in libz etc unless needed,
+ * even if you might want to know where the git directory etc
+ * are.
+ */
+#include "cache.h"
+
+char git_default_email[MAX_GITNAME];
+char git_default_name[MAX_GITNAME];
+int trust_executable_bit = 1;
+int assume_unchanged = 0;
+int prefer_symlink_refs = 0;
+int log_all_ref_updates = 0;
+int warn_ambiguous_refs = 1;
+int repository_format_version = 0;
+char git_commit_encoding[MAX_ENCODING_LENGTH] = "utf-8";
+int shared_repository = 0;
+const char *apply_default_whitespace = NULL;
+
+static char *git_dir, *git_object_dir, *git_index_file, *git_refs_dir,
+	*git_graft_file;
+static void setup_git_env(void)
+{
+	git_dir = getenv(GIT_DIR_ENVIRONMENT);
+	if (!git_dir)
+		git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
+	git_object_dir = getenv(DB_ENVIRONMENT);
+	if (!git_object_dir) {
+		git_object_dir = xmalloc(strlen(git_dir) + 9);
+		sprintf(git_object_dir, "%s/objects", git_dir);
+	}
+	git_refs_dir = xmalloc(strlen(git_dir) + 6);
+	sprintf(git_refs_dir, "%s/refs", git_dir);
+	git_index_file = getenv(INDEX_ENVIRONMENT);
+	if (!git_index_file) {
+		git_index_file = xmalloc(strlen(git_dir) + 7);
+		sprintf(git_index_file, "%s/index", git_dir);
+	}
+	git_graft_file = getenv(GRAFT_ENVIRONMENT);
+	if (!git_graft_file)
+		git_graft_file = strdup(git_path("info/grafts"));
+}
+
+char *get_git_dir(void)
+{
+	if (!git_dir)
+		setup_git_env();
+	return git_dir;
+}
+
+char *get_object_directory(void)
+{
+	if (!git_object_dir)
+		setup_git_env();
+	return git_object_dir;
+}
+
+char *get_refs_directory(void)
+{
+	if (!git_refs_dir)
+		setup_git_env();
+	return git_refs_dir;
+}
+
+char *get_index_file(void)
+{
+	if (!git_index_file)
+		setup_git_env();
+	return git_index_file;
+}
+
+char *get_graft_file(void)
+{
+	if (!git_graft_file)
+		setup_git_env();
+	return git_graft_file;
+}
+
+