Implement git_odb_write()

Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Signed-off-by: Andreas Ericsson <ae@op5.se>

1 files changed, 551 insertions, 0 deletions

diff --git a/tests/t0301-write.c b/tests/t0301-write.c
new file mode 100644
index 000000000..f161ce12c
--- /dev/null
+++ b/tests/t0301-write.c
@@ -0,0 +1,551 @@
+
+#include "test_lib.h"
+#include <git/odb.h>
+#include "fileops.h"
+
+static char *odb_dir = "test-objects";
+
+typedef struct object_data {
+    char *id;     /* object id (sha1)                          */
+    char *dir;    /* object store (fan-out) directory name     */
+    char *file;   /* object store filename                     */
+} object_data;
+
+static object_data commit = {
+    "3d7f8a6af076c8c3f20071a8935cdbe8228594d1",
+    "test-objects/3d",
+    "test-objects/3d/7f8a6af076c8c3f20071a8935cdbe8228594d1",
+};
+
+static unsigned char commit_data[] = {
+    0x74, 0x72, 0x65, 0x65, 0x20, 0x64, 0x66, 0x66,
+    0x32, 0x64, 0x61, 0x39, 0x30, 0x62, 0x32, 0x35,
+    0x34, 0x65, 0x31, 0x62, 0x65, 0x62, 0x38, 0x38,
+    0x39, 0x64, 0x31, 0x66, 0x31, 0x66, 0x31, 0x32,
+    0x38, 0x38, 0x62, 0x65, 0x31, 0x38, 0x30, 0x33,
+    0x37, 0x38, 0x32, 0x64, 0x66, 0x0a, 0x61, 0x75,
+    0x74, 0x68, 0x6f, 0x72, 0x20, 0x41, 0x20, 0x55,
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+    0x6d, 0x3e, 0x20, 0x31, 0x32, 0x32, 0x37, 0x38,
+    0x31, 0x34, 0x32, 0x39, 0x37, 0x20, 0x2b, 0x30,
+    0x30, 0x30, 0x30, 0x0a, 0x63, 0x6f, 0x6d, 0x6d,
+    0x69, 0x74, 0x74, 0x65, 0x72, 0x20, 0x43, 0x20,
+    0x4f, 0x20, 0x4d, 0x69, 0x74, 0x74, 0x65, 0x72,
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+    0x20, 0x31, 0x32, 0x32, 0x37, 0x38, 0x31, 0x34,
+    0x32, 0x39, 0x37, 0x20, 0x2b, 0x30, 0x30, 0x30,
+    0x30, 0x0a, 0x0a, 0x41, 0x20, 0x6f, 0x6e, 0x65,
+    0x2d, 0x6c, 0x69, 0x6e, 0x65, 0x20, 0x63, 0x6f,
+    0x6d, 0x6d, 0x69, 0x74, 0x20, 0x73, 0x75, 0x6d,
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+    0x20, 0x74, 0x68, 0x65, 0x20, 0x63, 0x6f, 0x6d,
+    0x6d, 0x69, 0x74, 0x2e, 0x0a, 0x0a, 0x53, 0x69,
+    0x67, 0x6e, 0x65, 0x64, 0x2d, 0x6f, 0x66, 0x2d,
+    0x62, 0x79, 0x3a, 0x20, 0x41, 0x20, 0x55, 0x20,
+    0x54, 0x68, 0x6f, 0x72, 0x20, 0x3c, 0x61, 0x75,
+    0x74, 0x68, 0x6f, 0x72, 0x40, 0x65, 0x78, 0x61,
+    0x6d, 0x70, 0x6c, 0x65, 0x2e, 0x63, 0x6f, 0x6d,
+    0x3e, 0x0a,
+};
+
+static git_obj commit_obj = {
+	commit_data,
+	sizeof(commit_data),
+	GIT_OBJ_COMMIT
+};
+
+static object_data tree = {
+    "dff2da90b254e1beb889d1f1f1288be1803782df",
+    "test-objects/df",
+    "test-objects/df/f2da90b254e1beb889d1f1f1288be1803782df",
+};
+
+static unsigned char tree_data[] = {
+    0x31, 0x30, 0x30, 0x36, 0x34, 0x34, 0x20, 0x6f,
+    0x6e, 0x65, 0x00, 0x8b, 0x13, 0x78, 0x91, 0x79,
+    0x1f, 0xe9, 0x69, 0x27, 0xad, 0x78, 0xe6, 0x4b,
+    0x0a, 0xad, 0x7b, 0xde, 0xd0, 0x8b, 0xdc, 0x31,
+    0x30, 0x30, 0x36, 0x34, 0x34, 0x20, 0x73, 0x6f,
+    0x6d, 0x65, 0x00, 0xfd, 0x84, 0x30, 0xbc, 0x86,
+    0x4c, 0xfc, 0xd5, 0xf1, 0x0e, 0x55, 0x90, 0xf8,
+    0xa4, 0x47, 0xe0, 0x1b, 0x94, 0x2b, 0xfe, 0x31,
+    0x30, 0x30, 0x36, 0x34, 0x34, 0x20, 0x74, 0x77,
+    0x6f, 0x00, 0x78, 0x98, 0x19, 0x22, 0x61, 0x3b,
+    0x2a, 0xfb, 0x60, 0x25, 0x04, 0x2f, 0xf6, 0xbd,
+    0x87, 0x8a, 0xc1, 0x99, 0x4e, 0x85, 0x31, 0x30,
+    0x30, 0x36, 0x34, 0x34, 0x20, 0x7a, 0x65, 0x72,
+    0x6f, 0x00, 0xe6, 0x9d, 0xe2, 0x9b, 0xb2, 0xd1,
+    0xd6, 0x43, 0x4b, 0x8b, 0x29, 0xae, 0x77, 0x5a,
+    0xd8, 0xc2, 0xe4, 0x8c, 0x53, 0x91,
+};
+
+static git_obj tree_obj = {
+	tree_data,
+	sizeof(tree_data),
+	GIT_OBJ_TREE
+};
+
+static object_data tag = {
+    "09d373e1dfdc16b129ceec6dd649739911541e05",
+    "test-objects/09",
+    "test-objects/09/d373e1dfdc16b129ceec6dd649739911541e05",
+};
+
+static unsigned char tag_data[] = {
+    0x6f, 0x62, 0x6a, 0x65, 0x63, 0x74, 0x20, 0x33,
+    0x64, 0x37, 0x66, 0x38, 0x61, 0x36, 0x61, 0x66,
+    0x30, 0x37, 0x36, 0x63, 0x38, 0x63, 0x33, 0x66,
+    0x32, 0x30, 0x30, 0x37, 0x31, 0x61, 0x38, 0x39,
+    0x33, 0x35, 0x63, 0x64, 0x62, 0x65, 0x38, 0x32,
+    0x32, 0x38, 0x35, 0x39, 0x34, 0x64, 0x31, 0x0a,
+    0x74, 0x79, 0x70, 0x65, 0x20, 0x63, 0x6f, 0x6d,
+    0x6d, 0x69, 0x74, 0x0a, 0x74, 0x61, 0x67, 0x20,
+    0x76, 0x30, 0x2e, 0x30, 0x2e, 0x31, 0x0a, 0x74,
+    0x61, 0x67, 0x67, 0x65, 0x72, 0x20, 0x43, 0x20,
+    0x4f, 0x20, 0x4d, 0x69, 0x74, 0x74, 0x65, 0x72,
+    0x20, 0x3c, 0x63, 0x6f, 0x6d, 0x6d, 0x69, 0x74,
+    0x74, 0x65, 0x72, 0x40, 0x65, 0x78, 0x61, 0x6d,
+    0x70, 0x6c, 0x65, 0x2e, 0x63, 0x6f, 0x6d, 0x3e,
+    0x20, 0x31, 0x32, 0x32, 0x37, 0x38, 0x31, 0x34,
+    0x32, 0x39, 0x37, 0x20, 0x2b, 0x30, 0x30, 0x30,
+    0x30, 0x0a, 0x0a, 0x54, 0x68, 0x69, 0x73, 0x20,
+    0x69, 0x73, 0x20, 0x74, 0x68, 0x65, 0x20, 0x74,
+    0x61, 0x67, 0x20, 0x6f, 0x62, 0x6a, 0x65, 0x63,
+    0x74, 0x20, 0x66, 0x6f, 0x72, 0x20, 0x72, 0x65,
+    0x6c, 0x65, 0x61, 0x73, 0x65, 0x20, 0x76, 0x30,
+    0x2e, 0x30, 0x2e, 0x31, 0x0a,
+};
+
+static git_obj tag_obj = {
+	tag_data,
+	sizeof(tag_data),
+	GIT_OBJ_TAG
+};
+
+static object_data zero = {
+    "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
+    "test-objects/e6",
+    "test-objects/e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391",
+};
+
+static unsigned char zero_data[] = {
+    0x00  /* dummy data */
+};
+
+static git_obj zero_obj = {
+	zero_data,
+	0,
+	GIT_OBJ_BLOB
+};
+
+static object_data one = {
+    "8b137891791fe96927ad78e64b0aad7bded08bdc",
+    "test-objects/8b",
+    "test-objects/8b/137891791fe96927ad78e64b0aad7bded08bdc",
+};
+
+static unsigned char one_data[] = {
+    0x0a,
+};
+
+static git_obj one_obj = {
+	one_data,
+	sizeof(one_data),
+	GIT_OBJ_BLOB
+};
+
+static object_data two = {
+    "78981922613b2afb6025042ff6bd878ac1994e85",
+    "test-objects/78",
+    "test-objects/78/981922613b2afb6025042ff6bd878ac1994e85",
+};
+
+static unsigned char two_data[] = {
+    0x61, 0x0a,
+};
+
+static git_obj two_obj = {
+	two_data,
+	sizeof(two_data),
+	GIT_OBJ_BLOB
+};
+
+static object_data some = {
+    "fd8430bc864cfcd5f10e5590f8a447e01b942bfe",
+    "test-objects/fd",
+    "test-objects/fd/8430bc864cfcd5f10e5590f8a447e01b942bfe",
+};
+
+static unsigned char some_data[] = {
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+    0x74, 0x20, 0x65, 0x76, 0x65, 0x6e, 0x20, 0x74,
+    0x68, 0x65, 0x20, 0x69, 0x6d, 0x70, 0x6c, 0x69,
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+    0x4e, 0x54, 0x41, 0x42, 0x49, 0x4c, 0x49, 0x54,
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+    0x52, 0x50, 0x4f, 0x53, 0x45, 0x2e, 0x20, 0x20,
+    0x53, 0x65, 0x65, 0x20, 0x74, 0x68, 0x65, 0x20,
+    0x47, 0x4e, 0x55, 0x0a, 0x20, 0x2a, 0x20, 0x47,
+    0x65, 0x6e, 0x65, 0x72, 0x61, 0x6c, 0x20, 0x50,
+    0x75, 0x62, 0x6c, 0x69, 0x63, 0x20, 0x4c, 0x69,
+    0x63, 0x65, 0x6e, 0x73, 0x65, 0x20, 0x66, 0x6f,
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+    0x65, 0x74, 0x61, 0x69, 0x6c, 0x73, 0x2e, 0x0a,
+    0x20, 0x2a, 0x0a, 0x20, 0x2a, 0x20, 0x59, 0x6f,
+    0x75, 0x20, 0x73, 0x68, 0x6f, 0x75, 0x6c, 0x64,
+    0x20, 0x68, 0x61, 0x76, 0x65, 0x20, 0x72, 0x65,
+    0x63, 0x65, 0x69, 0x76, 0x65, 0x64, 0x20, 0x61,
+    0x20, 0x63, 0x6f, 0x70, 0x79, 0x20, 0x6f, 0x66,
+    0x20, 0x74, 0x68, 0x65, 0x20, 0x47, 0x4e, 0x55,
+    0x20, 0x47, 0x65, 0x6e, 0x65, 0x72, 0x61, 0x6c,
+    0x20, 0x50, 0x75, 0x62, 0x6c, 0x69, 0x63, 0x20,
+    0x4c, 0x69, 0x63, 0x65, 0x6e, 0x73, 0x65, 0x0a,
+    0x20, 0x2a, 0x20, 0x61, 0x6c, 0x6f, 0x6e, 0x67,
+    0x20, 0x77, 0x69, 0x74, 0x68, 0x20, 0x74, 0x68,
+    0x69, 0x73, 0x20, 0x70, 0x72, 0x6f, 0x67, 0x72,
+    0x61, 0x6d, 0x3b, 0x20, 0x73, 0x65, 0x65, 0x20,
+    0x74, 0x68, 0x65, 0x20, 0x66, 0x69, 0x6c, 0x65,
+    0x20, 0x43, 0x4f, 0x50, 0x59, 0x49, 0x4e, 0x47,
+    0x2e, 0x20, 0x20, 0x49, 0x66, 0x20, 0x6e, 0x6f,
+    0x74, 0x2c, 0x20, 0x77, 0x72, 0x69, 0x74, 0x65,
+    0x20, 0x74, 0x6f, 0x0a, 0x20, 0x2a, 0x20, 0x74,
+    0x68, 0x65, 0x20, 0x46, 0x72, 0x65, 0x65, 0x20,
+    0x53, 0x6f, 0x66, 0x74, 0x77, 0x61, 0x72, 0x65,
+    0x20, 0x46, 0x6f, 0x75, 0x6e, 0x64, 0x61, 0x74,
+    0x69, 0x6f, 0x6e, 0x2c, 0x20, 0x35, 0x31, 0x20,
+    0x46, 0x72, 0x61, 0x6e, 0x6b, 0x6c, 0x69, 0x6e,
+    0x20, 0x53, 0x74, 0x72, 0x65, 0x65, 0x74, 0x2c,
+    0x20, 0x46, 0x69, 0x66, 0x74, 0x68, 0x20, 0x46,
+    0x6c, 0x6f, 0x6f, 0x72, 0x2c, 0x0a, 0x20, 0x2a,
+    0x20, 0x42, 0x6f, 0x73, 0x74, 0x6f, 0x6e, 0x2c,
+    0x20, 0x4d, 0x41, 0x20, 0x30, 0x32, 0x31, 0x31,
+    0x30, 0x2d, 0x31, 0x33, 0x30, 0x31, 0x2c, 0x20,
+    0x55, 0x53, 0x41, 0x2e, 0x0a, 0x20, 0x2a, 0x2f,
+    0x0a,
+};
+
+static git_obj some_obj = {
+	some_data,
+	sizeof(some_data),
+	GIT_OBJ_BLOB
+};
+
+static int make_odb_dir(void)
+{
+    if (gitfo_mkdir(odb_dir, 0755) < 0) {
+        if (errno == EEXIST) {
+            fprintf(stderr, "odb directory \"%s\" already exists!\n", odb_dir);
+            return -1;
+        }
+        fprintf(stderr, "can't make odb directory \"%s\"\n", odb_dir);
+        return -1;
+    }
+
+    return 0;
+}
+
+static int remove_object_files(object_data *d)
+{
+    if (gitfo_unlink(d->file) < 0) {
+        fprintf(stderr, "can't delete object file \"%s\"\n", d->file);
+        return -1;
+    }
+    if ((gitfo_rmdir(d->dir) < 0) && (errno != ENOTEMPTY)) {
+        fprintf(stderr, "can't remove object directory \"%s\"\n", d->dir);
+        return -1;
+    }
+
+    if (gitfo_rmdir(odb_dir) < 0) {
+        fprintf(stderr, "can't remove odb directory \"%s\"\n", odb_dir);
+        return -1;
+    }
+
+    return 0;
+}
+
+static int check_object_files(object_data *d)
+{
+    if (gitfo_exists(d->dir) < 0)
+	    return -1;
+    if (gitfo_exists(d->file) < 0)
+	    return -1;
+    return 0;
+}
+
+static int cmp_objects(git_obj *o1, git_obj *o2)
+{
+    if (o1->type != o2->type)
+        return -1;
+    if (o1->len != o2->len)
+        return -1;
+    if ((o1->len > 0) && (memcmp(o1->data, o2->data, o1->len) != 0))
+        return -1;
+    return 0;
+}
+
+BEGIN_TEST(write_commit)
+    git_odb *db;
+    git_oid id1, id2;
+    git_obj obj;
+
+    must_pass(make_odb_dir());
+    must_pass(git_odb_open(&db, odb_dir));
+    must_pass(git_oid_mkstr(&id1, commit.id));
+
+    must_pass(git_odb_write(&id2, db, &commit_obj));
+    must_be_true(git_oid_cmp(&id1, &id2) == 0);
+    must_pass(check_object_files(&commit));
+
+    must_pass(git_odb__read_loose(&obj, db, &id1));
+    must_pass(cmp_objects(&obj, &commit_obj));
+
+    git_obj_close(&obj);
+    git_odb_close(db);
+    must_pass(remove_object_files(&commit));
+END_TEST
+
+BEGIN_TEST(write_tree)
+    git_odb *db;
+    git_oid id1, id2;
+    git_obj obj;
+
+    must_pass(make_odb_dir());
+    must_pass(git_odb_open(&db, odb_dir));
+    must_pass(git_oid_mkstr(&id1, tree.id));
+
+    must_pass(git_odb_write(&id2, db, &tree_obj));
+    must_be_true(git_oid_cmp(&id1, &id2) == 0);
+    must_pass(check_object_files(&tree));
+
+    must_pass(git_odb__read_loose(&obj, db, &id1));
+    must_pass(cmp_objects(&obj, &tree_obj));
+
+    git_obj_close(&obj);
+    git_odb_close(db);
+    must_pass(remove_object_files(&tree));
+END_TEST
+
+BEGIN_TEST(write_tag)
+    git_odb *db;
+    git_oid id1, id2;
+    git_obj obj;
+
+    must_pass(make_odb_dir());
+    must_pass(git_odb_open(&db, odb_dir));
+    must_pass(git_oid_mkstr(&id1, tag.id));
+
+    must_pass(git_odb_write(&id2, db, &tag_obj));
+    must_be_true(git_oid_cmp(&id1, &id2) == 0);
+    must_pass(check_object_files(&tag));
+
+    must_pass(git_odb__read_loose(&obj, db, &id1));
+    must_pass(cmp_objects(&obj, &tag_obj));
+
+    git_obj_close(&obj);
+    git_odb_close(db);
+    must_pass(remove_object_files(&tag));
+END_TEST
+
+BEGIN_TEST(write_zero)
+    git_odb *db;
+    git_oid id1, id2;
+    git_obj obj;
+
+    must_pass(make_odb_dir());
+    must_pass(git_odb_open(&db, odb_dir));
+    must_pass(git_oid_mkstr(&id1, zero.id));
+
+    must_pass(git_odb_write(&id2, db, &zero_obj));
+    must_be_true(git_oid_cmp(&id1, &id2) == 0);
+    must_pass(check_object_files(&zero));
+
+    must_pass(git_odb__read_loose(&obj, db, &id1));
+    must_pass(cmp_objects(&obj, &zero_obj));
+
+    git_obj_close(&obj);
+    git_odb_close(db);
+    must_pass(remove_object_files(&zero));
+END_TEST
+
+BEGIN_TEST(write_one)
+    git_odb *db;
+    git_oid id1, id2;
+    git_obj obj;
+
+    must_pass(make_odb_dir());
+    must_pass(git_odb_open(&db, odb_dir));
+    must_pass(git_oid_mkstr(&id1, one.id));
+
+    must_pass(git_odb_write(&id2, db, &one_obj));
+    must_be_true(git_oid_cmp(&id1, &id2) == 0);
+    must_pass(check_object_files(&one));
+
+    must_pass(git_odb__read_loose(&obj, db, &id1));
+    must_pass(cmp_objects(&obj, &one_obj));
+
+    git_obj_close(&obj);
+    git_odb_close(db);
+    must_pass(remove_object_files(&one));
+END_TEST
+
+BEGIN_TEST(write_two)
+    git_odb *db;
+    git_oid id1, id2;
+    git_obj obj;
+
+    must_pass(make_odb_dir());
+    must_pass(git_odb_open(&db, odb_dir));
+    must_pass(git_oid_mkstr(&id1, two.id));
+
+    must_pass(git_odb_write(&id2, db, &two_obj));
+    must_be_true(git_oid_cmp(&id1, &id2) == 0);
+    must_pass(check_object_files(&two));
+
+    must_pass(git_odb__read_loose(&obj, db, &id1));
+    must_pass(cmp_objects(&obj, &two_obj));
+
+    git_obj_close(&obj);
+    git_odb_close(db);
+    must_pass(remove_object_files(&two));
+END_TEST
+
+BEGIN_TEST(write_some)
+    git_odb *db;
+    git_oid id1, id2;
+    git_obj obj;
+
+    must_pass(make_odb_dir());
+    must_pass(git_odb_open(&db, odb_dir));
+    must_pass(git_oid_mkstr(&id1, some.id));
+
+    must_pass(git_odb_write(&id2, db, &some_obj));
+    must_be_true(git_oid_cmp(&id1, &id2) == 0);
+    must_pass(check_object_files(&some));
+
+    must_pass(git_odb__read_loose(&obj, db, &id1));
+    must_pass(cmp_objects(&obj, &some_obj));
+
+    git_obj_close(&obj);
+    git_odb_close(db);
+    must_pass(remove_object_files(&some));
+END_TEST
+