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#ifndef _IMPEXP_H
#define _IMPEXP_H
/*
* 2007 January 27
*
* The author disclaims copyright to this source code. In place of
* a legal notice, here is a blessing:
*
* May you do good and not evil.
* May you find forgiveness for yourself and forgive others.
* May you share freely, never taking more than you give.
*
********************************************************************
*
* SQLite extension module for importing/exporting
* database information from/to SQL source text and
* export to CSV text.
*/
/*
* impexp_import_sql
*
* Reads SQL commands from filename and executes them
* against the current database. Returns the number
* of changes to the current database.
*/
int impexp_import_sql(sqlite3 *db, char *filename);
/*
* impexp_export_sql
*
* Writes SQL to filename similar to SQLite's shell
* ".dump" meta command. Mode selects the output format:
* Mode 0 (default): dump schema and data using the
* optional table names following the mode argument.
* Mode 1: dump data only using the optional table
* names following the mode argument.
* Mode 2: dump schema and data using the optional
* table names following the mode argument; each
* table name is followed by a WHERE clause, i.e.
* "mode, table1, where1, table2, where2, ..."
* Mode 3: dump data only, same rules as in mode 2.
* Returns approximate number of lines written or
* -1 when an error occurred.
*
* Bit 1 of mode: when 1 dump data only
* Bits 8..9 of mode: blob quoting mode
* 0 default
* 256 ORACLE
* 512 SQL Server
* 768 MySQL
*/
int impexp_export_sql(sqlite3 *db, char *filename, int mode, ...);
/*
* impexp_export_csv
*
* Writes entire tables as CSV to provided filename. A header
* row is written when the hdr parameter is true. The
* rows are optionally introduced with a column made up of
* the prefix (non-empty string) for the respective table.
* If "schema" is NULL, "sqlite_master" is used, otherwise
* specify e.g. "sqlite_temp_master" for temporary tables or
* "att.sqlite_master" for the attached database "att".
*
* CREATE TABLE A(a,b);
* INSERT INTO A VALUES(1,2);
* INSERT INTO A VALUES(3,'foo');
* CREATE TABLE B(c);
* INSERT INTO B VALUES('hello');
* SELECT export_csv('out.csv', 0, 'aa', 'A', NULL, 'bb', 'B', NULL);
* -- CSV output
* "aa",1,2
* "aa",3,"foo"
* "bb","hello"
* SELECT export_csv('out.csv', 1, 'aa', 'A', NULL, 'bb', 'B', NULL);
* -- CSV output
* "aa","a","b"
* "aa",1,2
* "aa",3,"foo"
* "bb","c"
* "bb","hello"
*/
int impexp_export_csv(sqlite3 *db, char *filename, int hdr, ...);
/*
* impexp_export_xml
*
* Writes a table as simple XML to provided filename. The
* rows are optionally enclosed with the "root" tag,
* the row data is enclosed in "item" tags. If "schema"
* is NULL, "sqlite_master" is used, otherwise specify
* e.g. "sqlite_temp_master" for temporary tables or
* "att.sqlite_master" for the attached database "att".
*
* <item>
* <columnname TYPE="INTEGER|REAL|NULL|TEXT|BLOB">value</columnname>
* ...
* </item>
*
* e.g.
*
* CREATE TABLE A(a,b);
* INSERT INTO A VALUES(1,2.1);
* INSERT INTO A VALUES(3,'foo');
* INSERT INTO A VALUES('',NULL);
* INSERT INTO A VALUES(X'010203','<blob>');
* SELECT export_xml('out.xml', 0, 2, 'TBL_A', 'ROW', 'A');
* -- XML output
* <TBL_A>
* <ROW>
* <a TYPE="INTEGER">1</a>
* <b TYPE="REAL">2.1</b>
* </ROW>
* <ROW>
* <a TYPE="INTEGER">3</a>
* <b TYPE="TEXT">foo</b>
* </ROW>
* <ROW>
* <a TYPE="TEXT"></a>
* <b TYPE="NULL"></b>
* </ROW>
* <ROW>
* <a TYPE="BLOB">&x03;</a>
* <b TYPE="TEXT"><blob></b>
* </ROW>
* </TBL_A>
*
* Quoting of XML entities is performed only on the data,
* not on column names and root/item tags.
*/
int impexp_export_xml(sqlite3 *db, char *filename,
int append, int indent, char *root,
char *item, char *tablename, char *schema);
/*
* impexp_export_json
*
* Executes arbitrary SQL statements and formats
* the result in JavaScript Object Notation (JSON).
* The layout of the result is:
*
* object {results, sql}
* results[] object {columns, rows, changes, last_insert_rowid, error}
* columns[]
* object {name, decltype, type } (sqlite3_column_*)
* rows[][] (sqlite3_column_*)
* changes (sqlite3_changes)
* last_insert_rowid (sqlite3_last_insert_rowid)
* error (sqlite3_errmsg)
* sql (SQL text)
*
* For each single SQL statement in "sql" an object in the
* "results" array is produced.
*
* The function pointer for the output function to
* "impexp_export_json" has a signature compatible
* with fputc(3).
*/
typedef void (*impexp_putc)(int c, void *arg);
int impexp_export_json(sqlite3 *db, char *sql, impexp_putc pfunc,
void *parg);
/*
* impexp_init
*
* Registers the SQLite functions
*
* import_sql(filename)
* export_sql(filename, [mode, tablename, ...])
* export_csv(filename, hdr, prefix1, tablename1, schema1, ...)
* export_xml(filename, appendflg, indent,
* [root, item, tablename, schema]+)
* export_json(filename, sql)
*
* On Win32 the filename argument may be specified as NULL in
* order to open a system file dialog for interactive filename
* selection.
*/
int impexp_init(sqlite3 *db);
#endif
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