Adding upstream version 2:20.4+dfsg.upstream/2%20.4+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 470 insertions, 0 deletions

diff --git a/xbmc/dbwrappers/dataset.h b/xbmc/dbwrappers/dataset.h
new file mode 100644
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+++ b/xbmc/dbwrappers/dataset.h
@@ -0,0 +1,470 @@
+/*
+ *  Copyright (C) 2002, Leo Seib, Hannover
+ *
+ *  Project:Dataset C++ Dynamic Library
+ *  Module: Dataset abstraction layer header file
+ *  Author: Leo Seib      E-Mail: leoseib@web.de
+ *  Begin: 5/04/2002
+ *
+ *  SPDX-License-Identifier: MIT
+ *  See LICENSES/README.md for more information.
+ */
+
+#pragma once
+
+#include "qry_dat.h"
+
+#include <cstdio>
+#include <list>
+#include <map>
+#include <stdarg.h>
+#include <string>
+#include <unordered_map>
+
+namespace dbiplus
+{
+class Dataset; // forward declaration of class Dataset
+
+#define S_NO_CONNECTION "No active connection";
+
+#define DB_BUFF_MAX 8 * 1024 // Maximum buffer's capacity
+
+#define DB_CONNECTION_NONE 0
+#define DB_CONNECTION_OK 1
+#define DB_CONNECTION_BAD 2
+
+#define DB_COMMAND_OK 0 // OK - command executed
+#define DB_EMPTY_QUERY 1 // Query didn't return tuples
+#define DB_TUPLES_OK 2 // Query returned tuples
+#define DB_ERROR 5
+#define DB_BAD_RESPONSE 6
+#define DB_UNEXPECTED 7 // This shouldn't ever happen
+#define DB_UNEXPECTED_RESULT -1 //For integer functions
+
+/******************* Class Database definition ********************
+
+   represents  connection with database server;
+
+******************************************************************/
+class Database
+{
+protected:
+  bool active;
+  bool compression;
+  std::string error, // Error description
+      host, port, db, login, passwd, //Login info
+      sequence_table, //Sequence table for nextid
+      default_charset, //Default character set
+      key, cert, ca, capath, ciphers; //SSL - Encryption info
+
+public:
+  /* constructor */
+  Database();
+  /* destructor */
+  virtual ~Database();
+  virtual Dataset* CreateDataset() const = 0;
+  /* sets a new host name */
+  virtual void setHostName(const char* newHost) { host = newHost; }
+  /* gets a host name */
+  const char* getHostName(void) const { return host.c_str(); }
+  /* sets a new port */
+  void setPort(const char* newPort) { port = newPort; }
+  /* gets a port */
+  const char* getPort(void) const { return port.c_str(); }
+  /* sets a new database name */
+  virtual void setDatabase(const char* newDb) { db = newDb; }
+  /* gets a database name */
+  const char* getDatabase(void) const { return db.c_str(); }
+  /* sets a new login to database */
+  void setLogin(const char* newLogin) { login = newLogin; }
+  /* gets a login */
+  const char* getLogin(void) const { return login.c_str(); }
+  /* sets a password */
+  void setPasswd(const char* newPasswd) { passwd = newPasswd; }
+  /* gets a password */
+  const char* getPasswd(void) const { return passwd.c_str(); }
+  /* active status is OK state */
+  virtual bool isActive(void) const { return active; }
+  /* Set new name of sequence table */
+  void setSequenceTable(const char* new_seq_table) { sequence_table = new_seq_table; }
+  /* Get name of sequence table */
+  const char* getSequenceTable(void) { return sequence_table.c_str(); }
+  /* Get the default character set */
+  const char* getDefaultCharset(void) { return default_charset.c_str(); }
+  /* Sets configuration */
+  virtual void setConfig(const char* newKey,
+                         const char* newCert,
+                         const char* newCA,
+                         const char* newCApath,
+                         const char* newCiphers,
+                         bool newCompression)
+  {
+    key = newKey;
+    cert = newCert;
+    ca = newCA;
+    capath = newCApath;
+    ciphers = newCiphers;
+    compression = newCompression;
+  }
+
+  /* virtual methods that must be overloaded in derived classes */
+
+  virtual int init(void) { return DB_COMMAND_OK; }
+  virtual int status(void) { return DB_CONNECTION_NONE; }
+  virtual int setErr(int err_code, const char* qry) = 0;
+  virtual const char* getErrorMsg(void) { return error.c_str(); }
+
+  virtual int connect(bool create) { return DB_COMMAND_OK; }
+  virtual int connectFull(const char* newDb,
+                          const char* newHost = NULL,
+                          const char* newLogin = NULL,
+                          const char* newPasswd = NULL,
+                          const char* newPort = NULL,
+                          const char* newKey = NULL,
+                          const char* newCert = NULL,
+                          const char* newCA = NULL,
+                          const char* newCApath = NULL,
+                          const char* newCiphers = NULL,
+                          bool newCompression = false);
+  virtual void disconnect(void) { active = false; }
+  virtual int reset(void) { return DB_COMMAND_OK; }
+  virtual int create(void) { return DB_COMMAND_OK; }
+  virtual int drop(void) { return DB_COMMAND_OK; }
+  virtual long nextid(const char* seq_name) = 0;
+
+  /* \brief copy database */
+  virtual int copy(const char* new_name) { return -1; }
+
+  /* \brief drop all extra analytics from database */
+  virtual int drop_analytics(void) { return -1; }
+
+  virtual bool exists(void) { return false; }
+
+  /* virtual methods for transaction */
+
+  virtual void start_transaction() {}
+  virtual void commit_transaction() {}
+  virtual void rollback_transaction() {}
+
+  /* virtual methods for formatting */
+
+  /*! \brief Prepare a SQL statement for execution or querying using C printf nomenclature.
+   \param format - C printf compliant format string
+   \param ... - optional comma separated list of variables for substitution in format string placeholders.
+   \return escaped and formatted string.
+   */
+  virtual std::string prepare(const char* format, ...);
+
+  /*! \brief Prepare a SQL statement for execution or querying using C printf nomenclature
+   \param format - C printf compliant format string
+   \param args - va_list of variables for substitution in format string placeholders.
+   \return escaped and formatted string.
+   */
+  virtual std::string vprepare(const char* format, va_list args) = 0;
+
+  virtual bool in_transaction() { return false; }
+};
+
+/******************* Class Dataset definition *********************
+
+  global abstraction for using Databases
+
+******************************************************************/
+
+// define Dataset States type
+enum dsStates
+{
+  dsSelect,
+  dsInsert,
+  dsEdit,
+  dsUpdate,
+  dsDelete,
+  dsInactive
+};
+enum sqlType
+{
+  sqlSelect,
+  sqlUpdate,
+  sqlInsert,
+  sqlDelete,
+  sqlExec
+};
+
+typedef std::list<std::string> StringList;
+typedef std::map<std::string, field_value> ParamList;
+
+class Dataset
+{
+protected:
+  /*  char *Host     = ""; //WORK_HOST;
+  char *Database = ""; //WORK_DATABASE;
+  char *User     = ""; //WORK_USER;
+  char *Password = ""; //WORK_PASSWORD;
+*/
+
+  Database* db; // info about db connection
+  dsStates ds_state; // current state
+  Fields *fields_object, *edit_object;
+  std::unordered_map<std::string, unsigned int>
+      name2indexMap; // Lower case field name -> database index
+
+  /* query results*/
+  result_set result;
+  result_set exec_res;
+  bool autorefresh;
+
+  bool active; // Is Query Opened?
+  bool haveError;
+  int frecno; // number of current row bei bewegung
+  std::string sql;
+
+  ParamList plist; // Paramlist for locate
+  bool fbof, feof;
+  bool autocommit; // for transactions
+
+  /* Variables to store SQL statements */
+  std::string empty_sql; // Executed when result set is empty
+  std::string select_sql; // May be only single string variable
+
+  StringList update_sql; // May be an array in complex queries
+  /* Field values for updating must has prefix :NEW_ and :OLD_ and field name
+   Example:
+   update  wt_story set idobject set idobject=:NEW_idobject,body=:NEW_body
+   where idobject=:OLD_idobject
+   Essentially fields idobject and body must present in the
+   result set (select_sql statement) */
+
+  StringList insert_sql; // May be an array in complex queries
+  /* Field values for inserting must has prefix :NEW_ and field name
+   Example:
+   insert into wt_story (idobject, body) values (:NEW_idobject, :NEW_body)
+   Essentially fields idobject and body must present in the
+   result set (select_sql statement) */
+
+  StringList delete_sql; // May be an array in complex queries
+  /* Field values for deleing must has prefix :OLD_ and field name
+   Example:
+   delete from wt_story where idobject=:OLD_idobject
+   Essentially field idobject must present in the
+   result set (select_sql statement) */
+
+  /* Arrays for searching */
+  //  StringList names, values;
+
+  /* Makes direct inserts into database via mysql_query function */
+  virtual void make_insert() = 0;
+  /* Edit SQL */
+  virtual void make_edit() = 0;
+  /* Delete SQL */
+  virtual void make_deletion() = 0;
+
+  /* This function works only with MySQL database
+   Filling the fields information from select statement */
+  virtual void fill_fields(void) = 0;
+
+  /* Parse Sql - replacing fields with prefixes :OLD_ and :NEW_ with current values of OLD or NEW field. */
+  void parse_sql(std::string& sql);
+
+  /* Returns old field value (for :OLD) */
+  virtual const field_value f_old(const char* f);
+
+  /* fast string tolower helper */
+  char* str_toLower(char* s);
+
+public:
+  /* constructor */
+  Dataset();
+  explicit Dataset(Database* newDb);
+
+  /* destructor */
+  virtual ~Dataset();
+
+  /* sets a new value of connection to database */
+  void setDatabase(Database* newDb) { db = newDb; }
+  /* retrieves  a database which connected */
+  Database* getDatabase(void) { return db; }
+
+  /* sets a new query string to database server */
+  void setExecSql(const char* newSql) { sql = newSql; }
+  /* retrieves a query string */
+  const char* getExecSql(void) { return sql.c_str(); }
+
+  /* status active is OK query */
+  virtual bool isActive(void) { return active; }
+
+  virtual void setSqlParams(sqlType t, const char* sqlFrmt, ...);
+
+  /* error handling */
+  //  virtual void halt(const char *msg);
+
+  /* last inserted id */
+  virtual int64_t lastinsertid() = 0;
+  /* sequence numbers */
+  virtual long nextid(const char* seq_name) = 0;
+  /* sequence numbers */
+  virtual int num_rows() = 0;
+
+  /* Open SQL query */
+  virtual void open(const std::string& sql) = 0;
+  virtual void open() = 0;
+  /* func. executes a query without results to return */
+  virtual int exec(const std::string& sql) = 0;
+  virtual int exec() = 0;
+  virtual const void* getExecRes() = 0;
+  /* as open, but with our query exec Sql */
+  virtual bool query(const std::string& sql) = 0;
+  /* Close SQL Query*/
+  virtual void close();
+  /* This function looks for field Field_name with value equal Field_value
+   Returns true if found (position of dataset is set to founded position)
+   and false another way (position is not changed). */
+  //  virtual bool lookup(char *field_name, char*field_value);
+  /* Refresh dataset (reopen it and set the same cursor position) */
+  virtual void refresh();
+
+  /*! \brief Drop an index from the database table, provided it exists.
+   \param table - name of the table the index to be dropped is associated with
+   \param index - name of the index to be dropped
+   \return true when the index is guaranteed to no longer exist in the database.
+   */
+  virtual bool dropIndex(const char* table, const char* index) { return false; }
+
+  /* Go to record No (starting with 0) */
+  virtual bool seek(int pos = 0);
+  /* Go to record No (starting with 1) */
+  virtual bool goto_rec(int pos = 1);
+  /* Go to the first record in dataset */
+  virtual void first();
+  /* Go to next record in dataset */
+  virtual void next();
+  /* Go to previous record */
+  virtual void prev();
+  /* Go to last record in dataset */
+  virtual void last();
+
+  /* Check for Ending dataset */
+  virtual bool eof(void) { return feof; }
+  /* Check for Beginning dataset */
+  virtual bool bof(void) { return fbof; }
+
+  /* Start the insert mode */
+  virtual void insert();
+  /* Start the insert mode (alias for insert() function) */
+  virtual void append() { insert(); }
+  /* Start the edit mode */
+  virtual void edit();
+  /* Start the delete mode */
+  virtual void del();
+
+  /* Add changes, that were made during insert or edit states of dataset into the database */
+  virtual void post();
+  /* Delete statements from database */
+  virtual void deletion();
+  /* Cancel changes, made in insert or edit states of dataset */
+  virtual void cancel() {}
+  /* interrupt any pending database operation  */
+  virtual void interrupt() {}
+
+  virtual void setParamList(const ParamList& params);
+  virtual bool locate();
+  virtual bool locate(const ParamList& params);
+  virtual bool findNext();
+
+  /* func. retrieves a number of fields */
+  /* Number of fields in a record */
+  virtual int field_count();
+  virtual int fieldCount();
+  /* func. retrieves a field name with 'n' index */
+  virtual const char* fieldName(int n);
+  /* func. retrieves a field index with 'fn' field name,return -1 when field name not found */
+  virtual int fieldIndex(const char* fn);
+
+  /* Set field value */
+  virtual bool set_field_value(const char* f_name, const field_value& value);
+  /* alias for set_field_value */
+  virtual bool sf(const char* f, const field_value& v) { return set_field_value(f, v); }
+
+  /* Return field name by it index */
+  //  virtual char *field_name(int f_index) { return field_by_index(f_index)->get_field_name(); }
+
+  /* Getting value of field for current record */
+  virtual const field_value get_field_value(const char* f_name);
+  virtual const field_value get_field_value(int index);
+  /* Alias to get_field_value */
+  const field_value fv(const char* f) { return get_field_value(f); }
+  const field_value fv(int index) { return get_field_value(index); }
+
+  /* ------------ for transaction ------------------- */
+  void set_autocommit(bool v) { autocommit = v; }
+  bool get_autocommit() { return autocommit; }
+
+  /* ----------------- for debug -------------------- */
+  Fields* get_fields_object() { return fields_object; }
+  Fields* get_edit_object() { return edit_object; }
+
+  /* --------------- for fast access ---------------- */
+  const result_set& get_result_set() { return result; }
+  const sql_record* get_sql_record();
+
+private:
+  Dataset(const Dataset&) = delete;
+  Dataset& operator=(const Dataset&) = delete;
+
+  /* Get the column index from a string field_value request */
+  bool get_index_map_entry(const char* f_name);
+
+  void set_ds_state(dsStates new_state) { ds_state = new_state; }
+
+public:
+  /* return ds_state value */
+  dsStates get_state() { return ds_state; }
+
+  /*add a new value to select_sql*/
+  void set_select_sql(const char* sel_sql);
+  void set_select_sql(const std::string& select_sql);
+  /*add a new value to update_sql*/
+  void add_update_sql(const char* upd_sql);
+  void add_update_sql(const std::string& upd_sql);
+  /*add a new value to insert_sql*/
+  void add_insert_sql(const char* ins_sql);
+  void add_insert_sql(const std::string& ins_sql);
+  /*add a new value to delete_sql*/
+  void add_delete_sql(const char* del_sql);
+  void add_delete_sql(const std::string& del_sql);
+
+  /*clear update_sql*/
+  void clear_update_sql();
+  /*clear insert_sql*/
+  void clear_insert_sql();
+  /*clear delete_sql*/
+  void clear_delete_sql();
+
+  /* size of insert_sql*/
+  size_t insert_sql_count();
+  /* size of delete_sql*/
+  size_t delete_sql_count();
+
+  /*get value of select_sql*/
+  const char* get_select_sql();
+};
+
+/******************** Class DbErrors definition *********************
+
+			   error handling
+
+******************************************************************/
+class DbErrors
+{
+
+public:
+  /* constructor */
+  DbErrors();
+  DbErrors(const char* msg, ...);
+
+  const char* getMsg();
+
+private:
+  std::string msg_;
+};
+
+} // namespace dbiplus