wc_db_util.c revision 299742
1/* 2 * wc_db_util.c : Various util functions for wc_db(_pdh) 3 * 4 * ==================================================================== 5 * Licensed to the Apache Software Foundation (ASF) under one 6 * or more contributor license agreements. See the NOTICE file 7 * distributed with this work for additional information 8 * regarding copyright ownership. The ASF licenses this file 9 * to you under the Apache License, Version 2.0 (the 10 * "License"); you may not use this file except in compliance 11 * with the License. You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, 16 * software distributed under the License is distributed on an 17 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 18 * KIND, either express or implied. See the License for the 19 * specific language governing permissions and limitations 20 * under the License. 21 * ==================================================================== 22 */ 23 24/* About this file: 25 This file is meant to be a stash of fairly low-level functions used by both 26 wc_db.c and wc_db_pdh.c. In breaking stuff out of the monolithic wc_db.c, 27 I have discovered that some utility functions are used by bits in both 28 files. Rather than shoehorn those functions into one file or the other, or 29 create circular dependencies between the files, I felt a third file, with 30 a well-defined scope, would be sensible. History will judge its effect. 31 32 The goal of it file is simple: just execute SQLite statements. That is, 33 functions in this file should have no knowledge of pdh's or db's, and 34 should just operate on the raw sdb object. If a function requires more 35 information than that, it shouldn't be in here. -hkw 36 */ 37 38#define SVN_WC__I_AM_WC_DB 39 40#include "svn_dirent_uri.h" 41#include "private/svn_sqlite.h" 42 43#include "wc.h" 44#include "adm_files.h" 45#include "wc_db_private.h" 46#include "wc-queries.h" 47 48#include "svn_private_config.h" 49 50WC_QUERIES_SQL_DECLARE_STATEMENTS(statements); 51 52 53 54/* */ 55svn_error_t * 56svn_wc__db_util_fetch_wc_id(apr_int64_t *wc_id, 57 svn_sqlite__db_t *sdb, 58 apr_pool_t *scratch_pool) 59{ 60 svn_sqlite__stmt_t *stmt; 61 svn_boolean_t have_row; 62 63 /* ### cheat. we know there is just one WORKING_COPY row, and it has a 64 ### NULL value for local_abspath. */ 65 SVN_ERR(svn_sqlite__get_statement(&stmt, sdb, STMT_SELECT_WCROOT_NULL)); 66 SVN_ERR(svn_sqlite__step(&have_row, stmt)); 67 if (!have_row) 68 return svn_error_createf(SVN_ERR_WC_CORRUPT, svn_sqlite__reset(stmt), 69 _("Missing a row in WCROOT.")); 70 71 SVN_ERR_ASSERT(!svn_sqlite__column_is_null(stmt, 0)); 72 *wc_id = svn_sqlite__column_int64(stmt, 0); 73 74 return svn_error_trace(svn_sqlite__reset(stmt)); 75} 76 77 78 79 80/* An SQLite application defined function that allows SQL queries to 81 use "relpath_depth(local_relpath)". */ 82static svn_error_t * 83relpath_depth_sqlite(svn_sqlite__context_t *sctx, 84 int argc, 85 svn_sqlite__value_t *values[], 86 void *baton) 87{ 88 const char *path = NULL; 89 apr_int64_t depth; 90 91 if (argc == 1 && svn_sqlite__value_type(values[0]) == SVN_SQLITE__TEXT) 92 path = svn_sqlite__value_text(values[0]); 93 if (!path) 94 { 95 svn_sqlite__result_null(sctx); 96 return SVN_NO_ERROR; 97 } 98 99 depth = *path ? 1 : 0; 100 while (*path) 101 { 102 if (*path == '/') 103 ++depth; 104 ++path; 105 } 106 svn_sqlite__result_int64(sctx, depth); 107 108 return SVN_NO_ERROR; 109} 110 111 112svn_error_t * 113svn_wc__db_util_open_db(svn_sqlite__db_t **sdb, 114 const char *dir_abspath, 115 const char *sdb_fname, 116 svn_sqlite__mode_t smode, 117 svn_boolean_t exclusive, 118 apr_int32_t timeout, 119 const char *const *my_statements, 120 apr_pool_t *result_pool, 121 apr_pool_t *scratch_pool) 122{ 123 const char *sdb_abspath = svn_wc__adm_child(dir_abspath, sdb_fname, 124 scratch_pool); 125 126 if (smode != svn_sqlite__mode_rwcreate) 127 { 128 svn_node_kind_t kind; 129 130 /* A file stat is much cheaper then a failed database open handled 131 by SQLite. */ 132 SVN_ERR(svn_io_check_path(sdb_abspath, &kind, scratch_pool)); 133 134 if (kind != svn_node_file) 135 return svn_error_createf(APR_ENOENT, NULL, 136 _("Working copy database '%s' not found"), 137 svn_dirent_local_style(sdb_abspath, 138 scratch_pool)); 139 } 140 141 SVN_ERR(svn_sqlite__open(sdb, sdb_abspath, smode, 142 my_statements ? my_statements : statements, 143 0, NULL, timeout, result_pool, scratch_pool)); 144 145 if (exclusive) 146 SVN_ERR(svn_sqlite__exec_statements(*sdb, STMT_PRAGMA_LOCKING_MODE)); 147 148 SVN_ERR(svn_sqlite__create_scalar_function(*sdb, "relpath_depth", 1, 149 TRUE /* deterministic */, 150 relpath_depth_sqlite, NULL)); 151 152 return SVN_NO_ERROR; 153} 154 155