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https://git.proxmox.com/git/libgit2
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c4cbb3b16e
In order to be able to test the ODB prefix functions, we need to be able to detect ambiguous prefixes in case multiple objects with the same prefix exist in the fake ODB. Extend `search_object` to detect ambiguous queries and have callers return its error code instead of always returning `GIT_ENOTFOUND`.
139 lines
2.8 KiB
C
139 lines
2.8 KiB
C
#include "clar_libgit2.h"
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#include "git2/sys/odb_backend.h"
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#include "backend_helpers.h"
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static int search_object(const fake_object **out, fake_backend *fake, const git_oid *oid, size_t len)
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{
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const fake_object *obj = fake->objects, *found = NULL;
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while (obj && obj->oid) {
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git_oid current_oid;
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git_oid_fromstr(¤t_oid, obj->oid);
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if (git_oid_ncmp(¤t_oid, oid, len) == 0) {
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if (found)
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return GIT_EAMBIGUOUS;
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found = obj;
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}
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obj++;
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}
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if (found && out)
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*out = found;
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return found ? GIT_OK : GIT_ENOTFOUND;
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}
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static int fake_backend__exists(git_odb_backend *backend, const git_oid *oid)
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{
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fake_backend *fake;
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fake = (fake_backend *)backend;
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fake->exists_calls++;
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return search_object(NULL, fake, oid, GIT_OID_RAWSZ) == GIT_OK;
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}
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static int fake_backend__read(
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void **buffer_p, size_t *len_p, git_otype *type_p,
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git_odb_backend *backend, const git_oid *oid)
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{
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const fake_object *obj;
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fake_backend *fake;
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int error;
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fake = (fake_backend *)backend;
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fake->read_calls++;
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if ((error = search_object(&obj, fake, oid, GIT_OID_HEXSZ)) < 0)
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return error;
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*len_p = strlen(obj->content);
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*buffer_p = git__strdup(obj->content);
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*type_p = GIT_OBJ_BLOB;
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return 0;
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}
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static int fake_backend__read_header(
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size_t *len_p, git_otype *type_p,
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git_odb_backend *backend, const git_oid *oid)
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{
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const fake_object *obj;
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fake_backend *fake;
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int error;
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fake = (fake_backend *)backend;
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fake->read_header_calls++;
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if ((error = search_object(&obj, fake, oid, GIT_OID_HEXSZ)) < 0)
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return error;
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*len_p = strlen(obj->content);
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*type_p = GIT_OBJ_BLOB;
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return 0;
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}
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static int fake_backend__read_prefix(
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git_oid *out_oid, void **buffer_p, size_t *len_p, git_otype *type_p,
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git_odb_backend *backend, const git_oid *short_oid, size_t len)
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{
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const fake_object *obj;
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fake_backend *fake;
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int error;
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fake = (fake_backend *)backend;
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fake->read_prefix_calls++;
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if ((error = search_object(&obj, fake, short_oid, len)) < 0)
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return error;
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git_oid_fromstr(out_oid, obj->oid);
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*len_p = strlen(obj->content);
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*buffer_p = git__strdup(obj->content);
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*type_p = GIT_OBJ_BLOB;
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return 0;
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}
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static void fake_backend__free(git_odb_backend *_backend)
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{
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fake_backend *backend;
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backend = (fake_backend *)_backend;
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git__free(backend);
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}
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int build_fake_backend(
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git_odb_backend **out,
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const fake_object *objects)
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{
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fake_backend *backend;
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backend = git__calloc(1, sizeof(fake_backend));
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GITERR_CHECK_ALLOC(backend);
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backend->parent.version = GIT_ODB_BACKEND_VERSION;
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backend->parent.refresh = NULL;
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backend->objects = objects;
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backend->parent.read = fake_backend__read;
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backend->parent.read_prefix = fake_backend__read_prefix;
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backend->parent.read_header = fake_backend__read_header;
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backend->parent.exists = fake_backend__exists;
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backend->parent.free = &fake_backend__free;
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*out = (git_odb_backend *)backend;
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return 0;
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}
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