Seed7 Release 2020-02-09

Hello,


I have released a new version of Seed7: seed7_05_20200209.tgz
The download is here: https://sourceforge.net/projects/seed7/files
In the Seed7 programming language new statements and operators can
be declared easily. Types are first class objects and therefore
templates/generics need no special syntax. Object orientation is used
when it brings advantages and not in places when other solutions are
more obvious.


Seed7 is covered by the GPL (and LGPL for the Seed7 runtime library).


Changelog:
- The new database driver sql_tds.c has been added. This driver uses
    the Tabular Data Stream (TDS) protocol to transfer data between
    database server and client. TDS is used by SQL Server and Sybase.
    This driver allows the connection to a SQL Server database from
    Linux.
- The new library db_prop.s7i has been added. This library provides a
    collection of database properties.
- The example program chkdb.sd7 has been improved:
    - Tests with comments in sql statements have been added.
    - Tests that fetch boolean values from numeric fields have been
        added.
    - Tests for date, time, datetime and timestamp fields have been
        added.
- In the library time.s7i the function time() has been improved, to
    accept more variants of the ISO 8601 time and date format including
    variants with a time zone.
- The interpreter (s7) has been improved to write the error message of
    a DATABASE_ERROR, if the exception is not catched.
- In tim_rtl.c the function timUtcFromTimestamp() has been improved to
    work without calling gmtime() or gmtime_r() or gmtime_s(). Now the
    function always works with a 64-bit signed timestamp. Gmtime() uses
    time_t, which can be 32-bit or 64-bit and it can be signed or
    unsigned.
- In tim_rtl.c the function timToTimestamp() has been improved to work
    without calling mkutc(). This way the function always works with a
    64-bit signed timestamp. Mkutc() is also defined in tim_rtl.c and it
    uses the system dependend type time_t.
- In tim_rtl.c the functions timToOsTimestamp(), assignTime() and
    dateFromDaysSince1900() have been added and the functions
    timFromBigTimestamp() and timToBigTimestamp() have been removed.
- In exec.c the functions par_restore() and loc_restore() have been
    improved to free unneeded memory, in case an exception has been
    raised.
- In executl.c the function destroy_local_object() has been improved to
    optionally ignore exceptions.
- The functions leaveExceptionHandling(), saveFailState() and
    restoreFailState() have been added to runerr.c. This function is used
    in executl.c and prclib.c.
- In numutl.c the functions getDecimalBigRational() and
    getDecimalFloat() have been improved to accept both, a decimal point
    and a decimal comma.
- In several database drivers the function processStatementStri() has
    been improved to replace a comment with a space.
- Interpreter and compiler have been improved to support the actions
    SQL_ROLLBACK, SQL_GET_AUTO_COMMIT and SQL_SET_AUTO_COMMIT.
- The functions sqlRollback(), sqlGetAutoCommit() and
    sqlSetAutoCommit() have been added to sql_cli.c, sql_lite.c,
    sql_my.c, sql_oci.c, sql_post.c and sql_rtl.c.
- In the database driver sql_lite.c the functions sqlBindTime() and
    sqlColumnTime() have been improved to support more time and date
    formats. The function sqlColumnTime() calls assignTime() to reach
    this goal.
- In the database driver sql_my.c the function sqlColumnTime() has
    been improved to correct values, if they are outside of the allowed
    range.
- The database driver sql_db2.c has been improved to allow that for
    the functions SQLExecute() and SQLFetch() SUCCESS_WITH_INFO is
    treated as SQL_SUCCESS.
- The database driver sql_post.c has been improved:
    - Inserting and selecting time fields is now supported under
        different operating systems and compilers.
    - The type preparedStmtRecord and the functions freePreparedStmt()
        and sqlPrepare() have been improved such that a prepared statement
        maintains a dbType reference instead of a connection (PGconn).
    - The functions doExecSql() and implicitCommit() have been added.
        These functions are used for autocommit and for transaction
        handling.
- The database driver sql_oci.c has been improved:
    - The function sqlBindTime() has been improved to set the timeZone
        and to use a nanosecond as unit for the fraction of a second.
        There is also a check for situations in which the function
        OCIDateTimeConstruct() fails.
    - The function sqlColumnTime() has been improved to use the function
        OCIDateTimeGetTimeZoneOffset() to retrieve a timeZone and to use a
        nanosecond as unit for the fraction of a second.
- The database driver sql_cli.c has been improved:
    - In case of a DATABASE_ERROR exception the native SQL error is
        assigned to the errorCode.
    - The function freePreparedStmt() has been changed to ignore
        possible errors of SQLFreeStmt().
    - Binding SQL_BLOB and SQL_CLOB parameters is supported now.
    - Retrieving SQL_SS_TIME2 and SQL_XML columns is supported now.
    - Retrieving datetime2 columns in sqlColumnTime() has been improved
        to use the function assignTime().
- The database include files db_lite.h, db_my.h, db_oci.h and db_odbc.h
    have been improved.
- In sql_srv.c the functions connectToServer() and
    connectToLocalServer() have been improved to return a boolean value
    instead of a SQLRETURN value.
- In cmd_rtl.c the functions cmdSetATime() and cmdSetMTime() have been
    improved to use the new function timToOsTimestamp().
- The function determineTdsDefines() has been added to chkccomp.c.
- In exec.c the function suspendInterpreter() has been renamed to
    doSuspendInterpreter().


Regards,
Thomas Mertes


--
Seed7 Homepage: http://seed7.sourceforge.net
Seed7 - The extensible programming language: User defined statements
and operators, abstract data types, templates without special
syntax, OO with interfaces and multiple dispatch, statically typed,
interpreted or compiled, portable, runs under linux/unix/windows.

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