New Seed7 Release 2023-12-17

A new version of the extensible programming language Seed7, has been released.
See: http://seed7.sourceforge.net

Changelog:

• The FAQ has been improved. Many thanks to Liam O'Brien for creating a list suggested changes. Thanks for helping to improve Seed7 in general.
• Support for symbolic links under Windows has been added:
  • Symbolic link reparse points and mount reparse points are both treated as symbolic links.
  • The interface does not distinguish between directory symbolic links and normal symbolic links. A normal symbolic link may refer to a directory and readDir(symlink) reads the directory contents (like it does under Linux/Unix/BSD).
  • The functions fileType() and fileTypeSL() have been improved to
    work under Windows like they do under Linux/Unix/BSD:
    • fileType() follows symbolic links and returns the file type of the final destination.
    • fileTypeSL() returns FILE_SYMLINK for symbolic links. For all other file types fileTypeSL() works like fileType().
    • fileTypeSL() does return FILE_SYMLINK only if readLink() works correctly.
    • fileTypeSL() has been fixed to return FILE_DIR for the emulated root directory and FILE_ABSENT if the file path cannot be mapped to a system path.
  • The functions readLink(path) and readLink(path, ABSOLUTE) have been improved to read the symbolic links of Windows. The function readLink(path) can read relative and absolute symbolic links. Both functions can read dangling symlinks. The functions are implemented with DeviceIoControl(). If DeviceIoControl() is not available (HAS_DEVICE_IO_CONTROL is not defined), they raise FILE_ERROR.
  • The functions getFileMode(path), setFileMode(path), getOwner(path), setOwner(path), getGroup(path), setGroup(path) and readDir(path) have been improved to follow symlinks under Windows (like they do under Linux/Unix/BSD).
  • Owner and group of the emulated root directory is "root".
  • The function moveFile() has been improved to avoid following symlinks under Windows (like it does under Linux/Unix/BSD).
  • The function symlink() has been improved to allow the creation of relative and absolute symbolic links under Windows. Under Windows administrator rights or the developer mode are necessary to create symbolic links.
• Several file functions have been improved:
  • The function getCTime(path) has been improved to return the change time instead of the creation time in Windows (like it does in Linux/Unix/BSD).
  • The file owner and group functions have been improved to avoid localized user and group names under Windows.
  • The function finalPath(path), which follows a symbolic link chain, has been added to the osfiles.s7i library.
  • The functions getFileMode(path, SYMLINK), getATime(path, SYMLINK), getMTime(path, SYMLINK), setMTime(path, time, SYMLINK), getOwner(path, SYMLINK), setOwner(path, owner, SYMLINK), getGroup(path, SYMLINK) and setGroup(path, group, SYMLINK) have been added to the osfiles.s7i library. These functions work only for symbolic links and get or set symbolic link data. They raise FILE_ERROR if 'path' does not refer to a symbolic link.
  • The functions getFileMode(fileSys, path, SYMLINK), getMTime(fileSys, path, SYMLINK), getOwner(fileSys, path, SYMLINK) and getGroup(fileSys, path, SYMLINK) have been added to the filesys.s7i library.
  • The functions copyFile(), cloneFile() and moveFile() have been improved to prohibit that a dangling symlink is overwritten.
  • In osfiles.s7i and filesys.s7i the function fileMode(path) is deprecated now. The function getFileMode(path) should be used instead.
  • The files ar.s7i, cpio.s7i, ftpserv.s7i, process.s7i, rpm.s7i, tar_cmds.s7i, tar.s7i and zip.s7i have been altered to use getFileMode(path) instead of the deprecated fileMode(path).
• The Seed7 build system has been improved:
  • The makefiles mk_msys.mak, mk_nmake.mak, mk_mingw.mak and mk_mingc.mak have been improved to support 32-bit and 64-bit C compilers.
  • Now, definitions of the library names LIBINTL_DLL, LIBEAY32_DLL, LIBCRYPTO_DLL and LIBSSL_DLL are written to version.h only under Windows.
  • The build tries to load dynamic/shared libraries and logs if they are present or not.
  • For dynamic/shared libraries with an absolute path the build logs, if they are 32-bit or 64-bit.
  • The functionality of setpaths.c has been moved to chkccomp.c.
  • The file setpaths.c has been removed.
  • The files makefile, mk_bcc32.mak, mk_bccv5.mak, mk_clang.mak, mk_clangw.mak, mk_cygw.mak, mk_djgp2.mak, mk_djgpp.mak, mk_emccl.mak, mk_emccw.mak, mk_freebsd.mk, mk_icc.mak, mk_linux.mak, mk_mingc.mak, mk_mingw.mak, mk_msvc.mak, mk_msys.mak, mk_nmake.mak, mk_osxcl.mak, mk_osx.mak, mk_tcc_l.mak and mk_tcc_w.mak have been changed to work without setpaths.c and to call chkccomp with the parameters of setpaths (S7_LIB_DIR, SEED7_LIBRARY and CC_ENVIRONMENT_INI).
  • The search for the SQLite include file in chkccomp.c has been improved to continue if the include file is not in C:/sqlite.
  • The directory seed7/bin has been added as possible place of the sqlite3.dll (or .so).
  • Tests for the presence of the functions CreateSymbolicLinkW(), GetFinalPathNameByHandleW(), DeviceIoControl(), GetFileInformationByHandleEx() and lutimes() have been added to chkccomp.c.
  • In chkccomp.c global variables for buildDirectory, s7LibDir and seed7Library have been introduced.
  • The functions testOutputToBuffer(), determineCurrentWorkingDirectory(), mapCodePageToUtf8(), mapToUtf8(), canLoadDynamicLibrary(), pointerSizeOfDynamicLibrary(), getCodePage(), setS7LibDir(), setSeed7Library() and setPaths() have been added to chkccomp.c.
• The Seed7 compiler (s7c.sd7) has been improved:
  • Now, it writes warnings if parameter aliasing can happen. A function triggers parameter aliasing if two reference parameters refer to the same value and one of them is changed in the function. In this case the other reference parameter changes as well. The Seed7 compiler checks if a function call uses the same actual parameter twice and at least one of the parameters is modified in the function.
  • Now, it writes the line that triggers a compilation error.
  • The error messages for case statements have been improved.
  • The string index access optimizations have been improved.
  • The estimation of possible string length results has been improved.
  • Now, the range of possible integer results of BIN_AND is computed.
• Tests for integer +:=, -:= and *:= with itself have been added to chkint.sd7 and chkovf.sd7.
• Tests for bigInteger *:= with itself have been added to chkbig.sd7.
• The function open() has been improved such that opening a non-existing absolute path under Windows (a path that cannot be mapped to a system path) returns STD_NULL.
• In aes_gcm.s7i the run-time of gcmMult has been reduced by 7% (measured with gcc and valgrind).
• The function inputReady(socket) has been added to the socket.s7i library.
• The library ftpserv.s7i has been improved to use the function getFileMode(fileSys, path, SYMLINK).
• In bas7.sd7 an error, found by parameter aliasing checks, has been fixed.
• The program err.sd7, which triggers most parsing errors, has been updated.
• In sql_lite.c an initialization of the SQLite connection has been added. This way the connection can be safely checked if sqlite3_open() fails.
• The file stat_drv.h has been improved to redefine all S_IS... macros if S_IFLNK is not defined.
• In striutl.c the function stri_to_standard_path() has been improved to avoid a use after free if realloc changes the pointer.
• In soc_rtl.c the function socInetAddr() has been improved to check if the host name is the name of the local host.
• Logging functions have been added or improved in cmd_rtl.c, kbd_inf.c, kbdlib.c, sql_lite.c, stat_win.c and striutl.c.
• In cmd_win.c logging has been changed to log the return code of security functions.
• Documentation comments have been added or improved in filesys.s7i, osfiles.s7i, cmdlib.c, cmd_rtl.c, cmd_unx.c and cmd_win.c.
• Macro arguments have been enclosed with parentheses in big_rtl.c, cmd_rtl.c, drw_emc.c, drw_win.c drw_x11.c, int_rtl.c, levelup.c, numutl.c pcs_unx.c, pol_unx.c, str_rtl.c, strlib.c and tracutul.c.
• In stat_win.c calls of os_stat_orig() have been replaced with calls of FindFirstFileW().
• The functions wstati64FollowSymlink(), wstatChangeTime(), lstati64Ext() and wchmodExt() have been added to stat_win.c. The function correctAdjustedUnixTime() has been removed from stat_win.c (it was necessary to correct the times of os_stat_orig() that is not used anymore).
• The functions winRename(), wSymlink(), winSymlink(), getSymlinkDestination(), winReadLink(), followSymlinkRecursive(), winFollowSymlink(), setupWellKnownSids(), cmdGetGroupOfSymlink(), cmdGetOwnerOfSymlink(), cmdSetGroupOfSymlink(), cmdSetMTimeOfSymlink() and cmdSetOwnerOfSymlink() have been added to cmd_win.c.
• Non-ascii characters in con_wat.c have been replaced with escape sequences.
• The function wOpenDir() has been added to dir_win.c.
• The function cp_from_os_path_buffer() has been added to stritul.c.
• The actions CMD_LS, CMD_FILEMODE and CMD_SET_FILEMODE have been renamed to CMD_READ_DIR, CMD_GET_FILE_MODE and CMD_SET_FILE_MODE respectively.
• The actions CMD_FINAL_PATH, CMD_GET_ATIME_OF_SYMLINK, CMD_GET_FILE_MODE_OF_SYMLINK, CMD_GET_GROUP_OF_SYMLINK, CMD_GET_MTIME_OF_SYMLINK, CMD_GET_OWNER_OF_SYMLINK, CMD_SET_GROUP_OF_SYMLINK, CMD_SET_MTIME_OF_SYMLINK and CMD_SET_OWNER_OF_SYMLINK have been added.

Regards,
Thomas Mertes

[Gary Chike]

Congrats Thomas! And Season's Greetings! 🎄