Implement sqlite backend for input history

Signed-off-by: Sebastian Ramacher <sebastian+dev@ramacher.at>

database-sqlite.c

@@ -3,14 +3,17 @@
 #include <sqlite3.h>
 #include <girara/utils.h>
 #include <girara/datastructures.h>
+#include <girara/input-history.h>
 #include <string.h>
 
 #include "database-sqlite.h"
 
 static void zathura_database_interface_init(ZathuraDatabaseInterface* iface);
+static void io_interface_init(GiraraInputHistoryIOInterface* iface);
 
 G_DEFINE_TYPE_WITH_CODE(ZathuraSQLDatabase, zathura_sqldatabase, G_TYPE_OBJECT,
-                        G_IMPLEMENT_INTERFACE(ZATHURA_TYPE_DATABASE, zathura_database_interface_init))
+                        G_IMPLEMENT_INTERFACE(ZATHURA_TYPE_DATABASE, zathura_database_interface_init)
+                        G_IMPLEMENT_INTERFACE(GIRARA_TYPE_INPUT_HISTORY_IO, io_interface_init))
 
 static void sqlite_finalize(GObject* object);
 static bool sqlite_add_bookmark(zathura_database_t* db, const char* file,
@@ -25,6 +28,8 @@ static bool sqlite_get_fileinfo(zathura_database_t* db, const char* file,
                                 zathura_fileinfo_t* file_info);
 static void sqlite_set_property(GObject* object, guint prop_id,
                                 const GValue* value, GParamSpec* pspec);
+static void sqlite_io_append(GiraraInputHistoryIO* db, const char*);
+static girara_list_t* sqlite_io_read(GiraraInputHistoryIO* db);
 
 typedef struct zathura_sqldatabase_private_s {
   sqlite3* session;
@@ -49,6 +54,14 @@ zathura_database_interface_init(ZathuraDatabaseInterface* iface)
   iface->get_fileinfo    = sqlite_get_fileinfo;
 }
 
+static void
+io_interface_init(GiraraInputHistoryIOInterface* iface)
+{
+  /* initialize interface */
+  iface->append = sqlite_io_append;
+  iface->read = sqlite_io_read;
+}
+
 static void
 zathura_sqldatabase_class_init(ZathuraSQLDatabaseClass* class)
 {
@@ -132,6 +145,12 @@ sqlite_db_init(ZathuraSQLDatabase* db, const char* path)
   static const char SQL_FILEINFO_ALTER2[] =
     "ALTER TABLE fileinfo ADD COLUMN first_page_column INTEGER;";
 
+  static const char SQL_HISTORY_INIT[] =
+    "CREATE TABLE IF NOT EXISTS history ("
+    "time TIMESTAMP,"
+    "line TEXT,"
+    "PRIMARY KEY(line));";
+
   sqlite3* session = NULL;
   if (sqlite3_open(path, &session) != SQLITE_OK) {
     girara_error("Could not open database: %s\n", path);
@@ -150,6 +169,12 @@ sqlite_db_init(ZathuraSQLDatabase* db, const char* path)
     return;
   }
 
+  if (sqlite3_exec(session, SQL_HISTORY_INIT, NULL, 0, NULL) != SQLITE_OK) {
+    girara_error("Failed to initialize database: %s\n", path);
+    sqlite3_close(session);
+    return;
+  }
+
   const char* data_type = NULL;
   if (sqlite3_table_column_metadata(session, NULL, "fileinfo", "pages_per_row", &data_type, NULL, NULL, NULL, NULL) != SQLITE_OK) {
     girara_debug("old database table layout detected; updating ...");
@@ -380,3 +405,51 @@ sqlite_get_fileinfo(zathura_database_t* db, const char* file,
 
   return true;
 }
+
+static void
+sqlite_io_append(GiraraInputHistoryIO* db, const char* input)
+{
+  static const char SQL_HISTORY_SET[] =
+    "REPLACE INTO history (line, time) VALUES (?, DATETIME('now'));";
+
+  zathura_sqldatabase_private_t* priv = ZATHURA_SQLDATABASE_GET_PRIVATE(db);
+  sqlite3_stmt* stmt = prepare_statement(priv->session, SQL_HISTORY_SET);
+  if (stmt == NULL) {
+    return;
+  }
+
+  if (sqlite3_bind_text(stmt, 1, input, -1, NULL) != SQLITE_OK) {
+    sqlite3_finalize(stmt);
+    girara_error("Failed to bind arguments.");
+    return;
+  }
+
+  sqlite3_step(stmt);
+  sqlite3_finalize(stmt);
+}
+
+static girara_list_t*
+sqlite_io_read(GiraraInputHistoryIO* db)
+{
+  static const char SQL_HISTORY_GET[] =
+    "SELECT line FROM history ORDER BY time";
+
+  zathura_sqldatabase_private_t* priv = ZATHURA_SQLDATABASE_GET_PRIVATE(db);
+  sqlite3_stmt* stmt = prepare_statement(priv->session, SQL_HISTORY_GET);
+  if (stmt == NULL) {
+    return NULL;
+  }
+
+  girara_list_t* list = girara_list_new2((girara_free_function_t) g_free);
+  if (list == NULL) {
+    sqlite3_finalize(stmt);
+    return NULL;
+  }
+
+  while (sqlite3_step(stmt) == SQLITE_ROW) {
+    girara_list_append(list, g_strdup((const char*) sqlite3_column_text(stmt, 0)));
+  }
+
+  sqlite3_finalize(stmt);
+  return list;
+}

zathura.c

@@ -219,6 +219,9 @@ zathura_init(zathura_t* zathura)
     girara_debug("Using sqlite database backend.");
     char* tmp = g_build_filename(zathura->config.data_dir, "bookmarks.sqlite", NULL);
     zathura->database = zathura_sqldatabase_new(tmp);
+    if (zathura->database != NULL) {
+      g_object_set(zathura->ui.session->global.command_history, "io", zathura->database, NULL);
+    }
     g_free(tmp);
 #endif
   } else {