thodg/libgit2/tests-clar/refdb/testdb.c

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• Hash : d00d5464
  Author :
  Date : 2013-03-01T15:37:33
  

  immutable references and a pluggable ref database

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• tests-clar/refdb/testdb.c

• #include "common.h"
  #include "vector.h"
  #include "util.h"
  #include <git2/refdb.h>
  #include <git2/refdb_backend.h>
  #include <git2/errors.h>
  #include <git2/repository.h>
  
  typedef struct refdb_test_backend {
  	git_refdb_backend parent;
  	
  	git_repository *repo;
  	git_refdb *refdb;
  	git_vector refs;
  } refdb_test_backend;
  
  typedef struct refdb_test_entry {
  	char *name;
  	git_ref_t type;
  	
  	union {
  		git_oid oid;
  		char *symbolic;
  	} target;
  } refdb_test_entry;
  
  static int ref_name_cmp(const void *a, const void *b)
  {
  	return strcmp(git_reference_name((git_reference *)a),
  		git_reference_name((git_reference *)b));
  }
  
  static int refdb_test_backend__exists(
  	int *exists,
  	git_refdb_backend *_backend,
  	const char *ref_name)
  {
  	refdb_test_backend *backend;
  	refdb_test_entry *entry;
  	size_t i;
  	
  	assert(_backend);
  	backend = (refdb_test_backend *)_backend;
  	
  	*exists = 0;
  	
  	git_vector_foreach(&backend->refs, i, entry) {
  		if (strcmp(entry->name, ref_name) == 0) {
  			*exists = 1;
  			break;
  		}
  	}
  	
  	return 0;
  }
  
  static int refdb_test_backend__write(
  	git_refdb_backend *_backend,
  	const git_reference *ref)
  {
  	refdb_test_backend *backend;
  	refdb_test_entry *entry;
  	
  	assert(_backend);
  	backend = (refdb_test_backend *)_backend;
  
  	entry = git__calloc(1, sizeof(refdb_test_entry));
  	GITERR_CHECK_ALLOC(entry);
  	
  	entry->name = git__strdup(git_reference_name(ref));
  	GITERR_CHECK_ALLOC(entry->name);
  	
  	entry->type = git_reference_type(ref);
  	
  	if (entry->type == GIT_REF_OID)
  		git_oid_cpy(&entry->target.oid, git_reference_target(ref));
  	else {
  		entry->target.symbolic = git__strdup(git_reference_symbolic_target(ref));
  		GITERR_CHECK_ALLOC(entry->target.symbolic);
  	}
  
  	git_vector_insert(&backend->refs, entry);
  	
  	return 0;
  }
  
  static int refdb_test_backend__lookup(
  	git_reference **out,
  	git_refdb_backend *_backend,
  	const char *ref_name)
  {
  	refdb_test_backend *backend;
  	refdb_test_entry *entry;
  	size_t i;
  
  	assert(_backend);
  	backend = (refdb_test_backend *)_backend;
  	
  	git_vector_foreach(&backend->refs, i, entry) {
  		if (strcmp(entry->name, ref_name) == 0) {
  			const git_oid *oid =
  				entry->type == GIT_REF_OID ? &entry->target.oid : NULL;
  			const char *symbolic =
  				entry->type == GIT_REF_SYMBOLIC ? entry->target.symbolic : NULL;
  			
  			if ((*out = git_reference__alloc(backend->refdb, ref_name, oid, symbolic)) == NULL)
  				return -1;
  			
  			return 0;
  		}
  	}
  
  	return GIT_ENOTFOUND;
  }
  
  static int refdb_test_backend__foreach(
  	git_refdb_backend *_backend,
  	unsigned int list_flags,
  	git_reference_foreach_cb callback,
  	void *payload)
  {
  	refdb_test_backend *backend;
  	refdb_test_entry *entry;
  	size_t i;
  	
  	assert(_backend);
  	backend = (refdb_test_backend *)_backend;
  
  	git_vector_foreach(&backend->refs, i, entry) {
  		if (entry->type == GIT_REF_OID && (list_flags & GIT_REF_OID) == 0)
  			continue;
  		
  		if (entry->type == GIT_REF_SYMBOLIC && (list_flags & GIT_REF_SYMBOLIC) == 0)
  			continue;
  		
  		if (callback(entry->name, payload) != 0)
  			return GIT_EUSER;
  	}
  	
  	return 0;
  }
  
  static void refdb_test_entry_free(refdb_test_entry *entry)
  {
  	if (entry->type == GIT_REF_SYMBOLIC)
  		git__free(entry->target.symbolic);
  	
  	git__free(entry->name);
  	git__free(entry);
  }
  
  static int refdb_test_backend__delete(
  	git_refdb_backend *_backend,
  	const git_reference *ref)
  {
  	refdb_test_backend *backend;
  	refdb_test_entry *entry;
  	size_t i;
  
  	assert(_backend);
  	backend = (refdb_test_backend *)_backend;
  
  	git_vector_foreach(&backend->refs, i, entry) {
  		if (strcmp(entry->name, git_reference_name(ref)) == 0) {
  			git_vector_remove(&backend->refs, i);
  			refdb_test_entry_free(entry);
  		}
  	}
  
  	return GIT_ENOTFOUND;
  }
  
  static void refdb_test_backend__free(git_refdb_backend *_backend)
  {
  	refdb_test_backend *backend;
  	refdb_test_entry *entry;
  	size_t i;
  	
  	assert(_backend);
  	backend = (refdb_test_backend *)_backend;
  
  	git_vector_foreach(&backend->refs, i, entry)
  		refdb_test_entry_free(entry);
  
  	git_vector_free(&backend->refs);	
  	git__free(backend);
  }
  
  int refdb_backend_test(
  	git_refdb_backend **backend_out,
  	git_repository *repo)
  {
  	refdb_test_backend *backend;
  	git_refdb *refdb;
  	int error = 0;
  
  	if ((error = git_repository_refdb(&refdb, repo)) < 0)
  		return error;
  
  	backend = git__calloc(1, sizeof(refdb_test_backend));
  	GITERR_CHECK_ALLOC(backend);
  	
  	git_vector_init(&backend->refs, 0, ref_name_cmp);
  
  	backend->repo = repo;
  	backend->refdb = refdb;
  
  	backend->parent.exists = &refdb_test_backend__exists;
  	backend->parent.lookup = &refdb_test_backend__lookup;
  	backend->parent.foreach = &refdb_test_backend__foreach;
  	backend->parent.write = &refdb_test_backend__write;
  	backend->parent.delete = &refdb_test_backend__delete;
  	backend->parent.free = &refdb_test_backend__free;
  
  	*backend_out = (git_refdb_backend *)backend;
  	return 0;
  }
  

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