Piant compiler and PDEE changes releases 31 to 40

Added

security enhancement project

Some more small improvements in the HTTP server:
- Added the long awaited 'select' to the default style (extension of Yvan Godin code).
- Better naming of buttons so that restarting the server will not turn these pages to dead links.
- Added 'html_tag' that should help you define new styles.
- Made 'begin_html_page' and 'end_html_page' a bit more modular in order to help custom styles creation.
- Added access control to the database fields modifyed using HTML forms.
- Added a /browse/ directory in the Pliant tree that demonstates the new virtual trees capabilities in the Pliant HTTP server.
- Added a parameter to the 'allowed' method in the default style.
- A few more improvements in the HTTP server statistics, and added an entry level report builder.
Added a 'sleep' instruction when an access is rejected.

Removed 'marked' and 'original' fields in 'LocalVariable' data type (they where only used in 'freeze' meta and we can do better without, with a few extra computations).
Added 'swap' control (naive implementation).
Plenty of improvements and bug fixes in the database engine (the one included in this release should be the first usable one).
Many changes related to the HTTP server:
- Stupid bug fixed in the HTTP default.style ('html_header' was ignored).
- Removed a bug in the HTTP server that could bring you a pointer to a freed page.
- Renamed 'local_ip' to 'local_ip_address', 'remote_ip' to 'remote_ip_address' and 'security' to 'security_level' in the path control mechanism.
- Renamed 'agent' to 'browser', 'environment' to 'form' and removed 'accept' in the HttpRequest type.
- Renamed 'preformated' to 'do_not_use_Int' in the HtmlPage type.
- Added 'you_can_use_Int' and 'you_can_use_Arrow' in the HtmlPage type if you need ulta fast access in you style sheet.
- Moved 'http_status' in HtmlPage to 'answer_status' in HttpRequest type.
- Improved 'execute_dynamic_page' so that the executed dynamic page will be recompiled on the fly if source code changed.
- Corrected missing / redirection.
- Added virtual URL trees support.
- Added full log support to the HTTP server.
In the DNS client, return all mail servers, properly sorted, instead of only the first one.
Removed the year in my copyright at the beginning of each file because I fail to keep it up to date.
Removed 'load' and 'store' for 'Dictionary' data type (use database engine instead).
In 'each' function for 'Dictionary' and 'Relation' data types, you now need to insert 'type' keyword before specifying the type of the elments you want to scan.
In 'each' function for 'Dictionary' and 'Relation' data types, you now need to change 'key' or 'keys' to 'getkey' or 'getkeys' (at a later point, I may add 'keyvalue' and 'keyrange' so that we can scan only a subset).
Added 'whois' client that will be used at some point to cleverly redirect downloads to various Pliant servers around the world.

Contains the first implementation of Pliant database engine.
Added a DNS client.
Added 'uInt16_li' 'uInt16_hi' 'uInt32_li' 'uInt32_hi' 'uInt_li' 'uInt_hi' for automatic handling of the indianess.
Added the missing '<html>' tags in the 'button' related pages.
Changed the semantic of 'function' field in 'LocalVariable' in order to avoid name clashes in nested functions.
Removed the 'index' field in 'LocalVariable' (can be deduced: see 'arg_type_meta' in /pliant/language/basic/extend.c)
Made ':>' meta more restrictive.
Moved /pliant/encoding/ to /pliant/util/encoding/
Added 'NestedSem' data type in order to avoid a dead lock with 'pliant_compiler_semaphore'.
Changed 'ip' to 'remote_ip' in the path access control mecanism.
Added 'local_ip' in the path access control mecanism.
Extended 'maybe' implicit declarations (the 'maybe' handling now seems to be a bit weak).
Changed Pliant icon to a more usefull one.

Includes the FreeBSD port (Oleg Cherevko).
Renamed 'os_name' to 'os_api'. Added 'os_kernel' and 'os_version' (Oleg Cherevko and Hubert Tonneau).
Corrected a bug in /pliant/language/stream/multi.pli that led to return random result when querying a file with not a valid name (Brad Emerson).
Moved the general HTML layout building from the HTTP server to the styles so that it can be overwritten.
Added an 'alternate' style for the HTTP server in order to demonstate the server side style capabilities of the Pliant HTTP server.
Corrected a bug in the HTTP server that prevented not found pages to be displayed as so.
Added 'chmod' at the end of /pliant/install/make-linux-i386-gcc in order to fix the access rights on various Pliant executables.
New logo, and better images for Pliant site.

Revisited the memory pages reservation mecanism.

(more details)

Changed the answered HTTP headers so that pages specifyed as dynamic be never cached by the client.
Added very basic statistic capabilities to the HTTP server.

Included the needed parts of Linux kernel headers in Pliant tree in order to avoid compile errors when using gcc 2.95.
Added a more sophisticated scheme in order to check the memory layout under Linux.
Renamed 'source' to 'how' in the HTTP default style.

This release contains a new section 'The overall Pliant project' in the documentation that splits Pliant project into several pieces so that contributors may take on some of these. The Pliant one man project stage is now over. Welcome to all of you contributors: I hope you will get fun with the parts you will carry, and get great rewards for that in a few years.

Corrected the 'mkdir' open flag handling when the file name looks like

"[dq]name[dq] options"

Added the 'MKD' and 'RMD' instructions (mkdir and rmdir) in the FTP server.
Added the 'mkdir' and 'rmdir' configuration instructions in the FTP client.
Added the 'unwrap' function (Patrice Ossona de Mendez).
Added the 'CChar' data type (John Eikenberry).
Added the external variables mapping (John Eikenberry).
When the result access flag 'Access_constant' is set in an expression, then the 'Access_read' flag must now also be set.
Automaticaly adding of a missing end '/' in the URL submitted to the HTTP server (Gordon january bug report).
Added file upload capabilities to the HTTP server (multipart forms).
Corrected a bug in the HTTP client file system.
Removed some nouse casting function from string to integer (please, use 'parse' or 'eparse' instead).
Corrected incorrect hanling of 'append' flag under Win32 for 'Stream' data type (Thomas Bakketun).
Corrected the broken /pliant/language/ui/ansi_terminal.pli for Win32.
Added 'each' for 'Relation' data type.
Removed the scope of /pliant/protocol/common/tcp_server.pli
Recorded 'runtime_compile' as a /pliant/language/compiler.pli function.
Added the 'source' instruction in the .page file format that generate the nice icon, and started to update a few pages of the documentation accordingly.
Added Pliant icon and Helene contribution to the Pliant web site design.
A few more updates and improvements in the documentation.

Added the 'access_object' flag to expressions result access attributs.
so added 'oarg' 'oarg_rw' ... function parameters types definitions.
and finaly added 'omap' function.
Corrected incorrect handling of overflowed constants in the parser.

The changelog is now using a single section. In the early Pliant days, I through there would be much more releases of Pliant PDEE than of the C part which is the compiler kernel, but in facts, I'm always releasing both at once, even if sometime there is no change at all in the C part. Moreover, deciding weather a change is a bug patch or a new feature is sometime difficult, so a single section will do as well.

The GCC interface is working again (broken since release 26).
Moved code_generator.* in /pliant/language/generator/
Changed the 'FileText' type defined in /pliant/admin/text.pli to 'AsciiFile' defined in /pliant/admin/asciifile.pli and changed the substitution functions.
Greatly improved the '

Dictionary

Added '

generate_string_functions

Included the '

enumerated

Corrected bugs in and improved the

FTP client

Added the 'raw' options to the string encoding for 'Str' data type so now, the 'console' function does not need to have a special case for displaying strings.
Changed the string encoding of 'Bool' data type from

true

false

"true"

"false"

Added 'CStr' data types (strings with C style encoding) and changed the various OS functions prototypes accordingly.
Corrected the deeply buggy 'later' tag in functions definition.
Added 'flagset' data type preposed by Thomas Bakketun.
Changed 'List insert' to 'List append' as suggested by Gordon on the forum.
Corrected 'implicit' feature in order to avoid squashing compile time error messages.

The code generator was wrong. (stack delta was not handled properly when the called function pops the stack on return)

The 'Relation' data type is now more customizable. (more details)
Added a parameter to 'memory_page_reserve' that will allow to load Pliant DLL from another application and then load a .dump file (tricky, but works).
Some cleanup in the calling convention handling.

Over 300 typo changes (see typo.pli for details)
The Posix plateform is working again.
Reorganized /pliant/admin/ and /pliant/linux/ subtrees.
Several improvements in /pliant/admin/file.pli module.
Added 'options' field to the path access control mechanism.
Added a clean site wild style selection to the HTTP server.