Cory McWilliams
9c90b2bc1d
git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3892 ed5197a5-7fde-0310-b194-c3ffbd925b24
303 lines
11 KiB
C
303 lines
11 KiB
C
#include "database.js.h"
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#include "mem.h"
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#include <assert.h>
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#include <stdbool.h>
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#include <string.h>
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#include <sqlite3.h>
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static JSClassID _database_class_id;
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static int _database_count;
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typedef struct _database_t
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{
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JSContext* context;
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JSValue object;
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void* task;
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sqlite3* db;
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const char* id;
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} database_t;
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static JSValue _database_create(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv, int magic, JSValue* data);
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static void _database_finalizer(JSRuntime *runtime, JSValue value);
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static JSValue _database_get(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
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static JSValue _database_set(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
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static JSValue _database_exchange(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
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static JSValue _database_remove(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
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static JSValue _database_get_all(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
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static JSValue _database_get_like(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
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static JSValue _databases_list(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv, int magic, JSValue* data);
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void tf_database_register(JSContext* context, sqlite3* sqlite)
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{
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JS_NewClassID(&_database_class_id);
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JSClassDef def =
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{
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.class_name = "Database",
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.finalizer = &_database_finalizer,
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};
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if (JS_NewClass(JS_GetRuntime(context), _database_class_id, &def) != 0)
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{
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printf("Failed to register database.\n");
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}
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JSValue global = JS_GetGlobalObject(context);
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JSValue data[] = { JS_NewInt64(context, (int64_t)(intptr_t)sqlite) };
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JSValue constructor = JS_NewCFunctionData(context, _database_create, 0, 0, 1, data);
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JS_SetConstructorBit(context, constructor, true);
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JS_SetPropertyStr(context, global, "Database", constructor);
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JSValue databases = JS_NewObject(context);
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JS_SetPropertyStr(context, global, "databases", databases);
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JS_SetPropertyStr(context, databases, "list", JS_NewCFunctionData(context, _databases_list, 0, 0, 1, data));
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JS_FreeValue(context, global);
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}
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static JSValue _database_create(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv, int magic, JSValue* data)
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{
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++_database_count;
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JSValue object = JS_NewObjectClass(context, _database_class_id);
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int64_t value = 0;
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JS_ToInt64(context, &value, data[0]);
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sqlite3* db = (sqlite3*)(intptr_t)value;
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database_t* database = tf_malloc(sizeof(database_t));
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*database = (database_t)
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{
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.task = JS_GetContextOpaque(context),
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.context = context,
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.object = object,
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.db = db,
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};
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const char* id = JS_ToCString(context, argv[0]);
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database->id = tf_strdup(id);
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JS_FreeCString(context, id);
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JS_SetOpaque(object, database);
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JS_SetPropertyStr(context, object, "get", JS_NewCFunction(context, _database_get, "get", 1));
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JS_SetPropertyStr(context, object, "set", JS_NewCFunction(context, _database_set, "set", 2));
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JS_SetPropertyStr(context, object, "exchange", JS_NewCFunction(context, _database_exchange, "exchange", 2));
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JS_SetPropertyStr(context, object, "remove", JS_NewCFunction(context, _database_remove, "remove", 1));
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JS_SetPropertyStr(context, object, "getAll", JS_NewCFunction(context, _database_get_all, "getAll", 0));
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JS_SetPropertyStr(context, object, "getLike", JS_NewCFunction(context, _database_get_like, "getLike", 1));
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return object;
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}
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static void _database_finalizer(JSRuntime *runtime, JSValue value)
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{
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database_t* database = JS_GetOpaque(value, _database_class_id);
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if (database)
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{
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tf_free((void*)database->id);
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tf_free(database);
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}
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--_database_count;
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}
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static JSValue _database_get(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)
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{
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JSValue entry = JS_UNDEFINED;
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database_t* database = JS_GetOpaque(this_val, _database_class_id);
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if (database)
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{
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sqlite3_stmt* statement;
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if (sqlite3_prepare(database->db, "SELECT value FROM properties WHERE id = $1 AND key = $2", -1, &statement, NULL) == SQLITE_OK)
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{
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size_t length;
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const char* keyString = JS_ToCStringLen(context, &length, argv[0]);
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if (sqlite3_bind_text(statement, 1, database->id, -1, NULL) == SQLITE_OK &&
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sqlite3_bind_text(statement, 2, keyString, length, NULL) == SQLITE_OK &&
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sqlite3_step(statement) == SQLITE_ROW)
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{
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entry = JS_NewStringLen(context, (const char*)sqlite3_column_text(statement, 0), sqlite3_column_bytes(statement, 0));
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}
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JS_FreeCString(context, keyString);
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sqlite3_finalize(statement);
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}
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}
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return entry;
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}
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JSValue _database_set(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)
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{
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database_t* database = JS_GetOpaque(this_val, _database_class_id);
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if (database)
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{
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sqlite3_stmt* statement;
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if (sqlite3_prepare(database->db, "INSERT OR REPLACE INTO properties (id, key, value) VALUES ($1, $2, $3)", -1, &statement, NULL) == SQLITE_OK)
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{
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size_t keyLength;
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const char* keyString = JS_ToCStringLen(context, &keyLength, argv[0]);
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size_t valueLength;
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const char* valueString = JS_ToCStringLen(context, &valueLength, argv[1]);
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if (sqlite3_bind_text(statement, 1, database->id, -1, NULL) == SQLITE_OK &&
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sqlite3_bind_text(statement, 2, keyString, keyLength, NULL) == SQLITE_OK &&
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sqlite3_bind_text(statement, 3, valueString, valueLength, NULL) == SQLITE_OK &&
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sqlite3_step(statement) == SQLITE_OK)
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{
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}
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JS_FreeCString(context, keyString);
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JS_FreeCString(context, valueString);
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sqlite3_finalize(statement);
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}
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}
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return JS_UNDEFINED;
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}
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static JSValue _database_exchange(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)
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{
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JSValue exchanged = JS_UNDEFINED;
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database_t* database = JS_GetOpaque(this_val, _database_class_id);
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if (database)
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{
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sqlite3_stmt* statement;
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if (JS_IsNull(argv[1]) || JS_IsUndefined(argv[1]))
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{
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if (sqlite3_prepare(database->db, "INSERT INTO properties (id, key, value) VALUES ($1, $2, $3) ON CONFLICT DO NOTHING", -1, &statement, NULL) == SQLITE_OK)
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{
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size_t key_length;
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size_t set_length;
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const char* key = JS_ToCStringLen(context, &key_length, argv[0]);
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const char* set = JS_ToCStringLen(context, &set_length, argv[2]);
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if (sqlite3_bind_text(statement, 1, database->id, -1, NULL) == SQLITE_OK &&
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sqlite3_bind_text(statement, 2, key, key_length, NULL) == SQLITE_OK &&
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sqlite3_bind_text(statement, 3, set, set_length, NULL) == SQLITE_OK &&
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sqlite3_step(statement) == SQLITE_DONE)
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{
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exchanged = sqlite3_changes(database->db) != 0 ? JS_TRUE : JS_FALSE;
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}
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JS_FreeCString(context, key);
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JS_FreeCString(context, set);
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sqlite3_finalize(statement);
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}
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}
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else if (sqlite3_prepare(database->db, "UPDATE properties SET value = $1 WHERE id = $2 AND key = $3 AND value = $4", -1, &statement, NULL) == SQLITE_OK)
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{
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size_t key_length;
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size_t expected_length;
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size_t set_length;
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const char* key = JS_ToCStringLen(context, &key_length, argv[0]);
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const char* expected = JS_ToCStringLen(context, &expected_length, argv[1]);
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const char* set = JS_ToCStringLen(context, &set_length, argv[2]);
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if (sqlite3_bind_text(statement, 1, set, set_length, NULL) == SQLITE_OK &&
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sqlite3_bind_text(statement, 2, database->id, -1, NULL) == SQLITE_OK &&
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sqlite3_bind_text(statement, 3, key, key_length, NULL) == SQLITE_OK &&
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sqlite3_bind_text(statement, 4, expected, expected_length, NULL) == SQLITE_OK &&
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sqlite3_step(statement) == SQLITE_DONE)
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{
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exchanged = sqlite3_changes(database->db) != 0 ? JS_TRUE : JS_FALSE;
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}
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JS_FreeCString(context, key);
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JS_FreeCString(context, expected);
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JS_FreeCString(context, set);
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sqlite3_finalize(statement);
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}
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}
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return exchanged;
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}
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JSValue _database_remove(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)
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{
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database_t* database = JS_GetOpaque(this_val, _database_class_id);
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if (database)
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{
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sqlite3_stmt* statement;
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if (sqlite3_prepare(database->db, "DELETE FROM properties WHERE id = $1 AND key = $2", -1, &statement, NULL) == SQLITE_OK)
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{
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size_t keyLength;
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const char* keyString = JS_ToCStringLen(context, &keyLength, argv[0]);
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if (sqlite3_bind_text(statement, 1, database->id, -1, NULL) == SQLITE_OK &&
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sqlite3_bind_text(statement, 2, keyString, keyLength, NULL) == SQLITE_OK &&
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sqlite3_step(statement) == SQLITE_OK)
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{
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}
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JS_FreeCString(context, keyString);
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sqlite3_finalize(statement);
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}
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}
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return JS_UNDEFINED;
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}
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JSValue _database_get_all(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)
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{
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JSValue array = JS_UNDEFINED;
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database_t* database = JS_GetOpaque(this_val, _database_class_id);
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if (database)
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{
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sqlite3_stmt* statement;
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if (sqlite3_prepare(database->db, "SELECT key, value FROM properties WHERE id = $1", -1, &statement, NULL) == SQLITE_OK)
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{
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if (sqlite3_bind_text(statement, 1, database->id, -1, NULL) == SQLITE_OK)
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{
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array = JS_NewArray(context);
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uint32_t index = 0;
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while (sqlite3_step(statement) == SQLITE_ROW)
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{
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JS_SetPropertyUint32(context, array, index++, JS_NewStringLen(context, (const char*)sqlite3_column_text(statement, 0), sqlite3_column_bytes(statement, 0)));
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}
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}
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sqlite3_finalize(statement);
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}
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}
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return array;
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}
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JSValue _database_get_like(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)
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{
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JSValue result = JS_UNDEFINED;
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database_t* database = JS_GetOpaque(this_val, _database_class_id);
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if (database)
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{
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sqlite3_stmt* statement;
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if (sqlite3_prepare(database->db, "SELECT key, value FROM properties WHERE id = ? AND KEY LIKE ?", -1, &statement, NULL) == SQLITE_OK)
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{
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const char* pattern = JS_ToCString(context, argv[0]);
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if (sqlite3_bind_text(statement, 1, database->id, -1, NULL) == SQLITE_OK &&
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sqlite3_bind_text(statement, 2, pattern, -1, NULL) == SQLITE_OK)
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{
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result = JS_NewObject(context);
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while (sqlite3_step(statement) == SQLITE_ROW)
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{
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JS_SetPropertyStr(
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context,
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result,
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(const char*)sqlite3_column_text(statement, 0),
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JS_NewStringLen(context, (const char*)sqlite3_column_text(statement, 1), sqlite3_column_bytes(statement, 1)));
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}
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}
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JS_FreeCString(context, pattern);
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sqlite3_finalize(statement);
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}
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}
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return result;
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}
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static JSValue _databases_list(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv, int magic, JSValue* data)
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{
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int64_t value = 0;
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JS_ToInt64(context, &value, data[0]);
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sqlite3* db = (sqlite3*)(intptr_t)value;
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JSValue array = JS_UNDEFINED;
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sqlite3_stmt* statement;
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if (sqlite3_prepare(db, "SELECT DISTINCT id FROM properties WHERE id LIKE ?", -1, &statement, NULL) == SQLITE_OK)
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{
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const char* pattern = JS_ToCString(context, argv[0]);
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if (sqlite3_bind_text(statement, 1, pattern, -1, NULL) == SQLITE_OK)
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{
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array = JS_NewArray(context);
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uint32_t index = 0;
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while (sqlite3_step(statement) == SQLITE_ROW)
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{
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JS_SetPropertyUint32(context, array, index++, JS_NewStringLen(context, (const char*)sqlite3_column_text(statement, 0), sqlite3_column_bytes(statement, 0)));
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}
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}
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JS_FreeCString(context, pattern);
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sqlite3_finalize(statement);
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}
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return array;
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}
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