index file. If not specified, the default of `$GIT_DIR/index`
is used.
+'GIT_INDEX_VERSION'::
+ This environment variable allows the specification of an index
+ version for new repositories. It won't affect existing index
+ files. By default index file version [23] is used.
+
'GIT_OBJECT_DIRECTORY'::
If the object storage directory is specified via this
environment variable then the sha1 directories are created
#define INDEX_FORMAT_DEFAULT 3
+static unsigned int get_index_format_default(void)
+{
+ char *envversion = getenv("GIT_INDEX_VERSION");
+ if (!envversion) {
+ return INDEX_FORMAT_DEFAULT;
+ } else {
+ char *endp;
+ unsigned int version = strtoul(envversion, &endp, 10);
+
+ if (*endp ||
+ version < INDEX_FORMAT_LB || INDEX_FORMAT_UB < version) {
+ warning(_("GIT_INDEX_VERSION set, but the value is invalid.\n"
+ "Using version %i"), INDEX_FORMAT_DEFAULT);
+ version = INDEX_FORMAT_DEFAULT;
+ }
+ return version;
+ }
+}
+
/*
* dev/ino/uid/gid/size are also just tracked to the low 32 bits
* Again - this is just a (very strong in practice) heuristic that
}
if (!istate->version)
- istate->version = INDEX_FORMAT_DEFAULT;
+ istate->version = get_index_format_default();
/* demote version 3 to version 2 when the latter suffices */
if (istate->version == 3 || istate->version == 2)
--- /dev/null
+#!/bin/sh
+
+test_description='index file specific tests'
+
+. ./test-lib.sh
+
+test_expect_success 'setup' '
+ echo 1 >a
+'
+
+test_expect_success 'bogus GIT_INDEX_VERSION issues warning' '
+ (
+ rm -f .git/index &&
+ GIT_INDEX_VERSION=2bogus &&
+ export GIT_INDEX_VERSION &&
+ git add a 2>&1 | sed "s/[0-9]//" >actual.err &&
+ sed -e "s/ Z$/ /" <<-\EOF >expect.err &&
+ warning: GIT_INDEX_VERSION set, but the value is invalid.
+ Using version Z
+ EOF
+ test_i18ncmp expect.err actual.err
+ )
+'
+
+test_expect_success 'out of bounds GIT_INDEX_VERSION issues warning' '
+ (
+ rm -f .git/index &&
+ GIT_INDEX_VERSION=1 &&
+ export GIT_INDEX_VERSION &&
+ git add a 2>&1 | sed "s/[0-9]//" >actual.err &&
+ sed -e "s/ Z$/ /" <<-\EOF >expect.err &&
+ warning: GIT_INDEX_VERSION set, but the value is invalid.
+ Using version Z
+ EOF
+ test_i18ncmp expect.err actual.err
+ )
+'
+
+test_expect_success 'no warning with bogus GIT_INDEX_VERSION and existing index' '
+ (
+ GIT_INDEX_VERSION=1 &&
+ export GIT_INDEX_VERSION &&
+ git add a 2>actual.err &&
+ >expect.err &&
+ test_i18ncmp expect.err actual.err
+ )
+'
+
+test_done