More similar to other Tcl commands

Now that these have moved to examples/, we don't rely on jimsh
being in the same directory. Just pick up jimsh from the PATH.

Signed-off-by: Steve Bennett <steveb@workware.net.au>

Also add some additional tools that use xtrace.

examples/jcov - code coverage
examples/jtime - code coverage that measures execution time
examples/jtrace - trace script execution

Signed-off-by: Steve Bennett <steveb@workware.net.au>

Allows a debugger or tracing facility to be implemented

Signed-off-by: Steve Bennett <steveb@workware.net.au>

Make sure we don't break the bootstrap jimsh
Also build with --maintainer to check for assertion failures
and reference count issues.

Signed-off-by: Steve Bennett <steveb@workware.net.au>

In order to test bootstrap jimsh, it is very helpful
if it can pass all the unit tests.

- Set tcl_platform(bootstrap) to 1 for bootstrap jimsh or 0 otherwise
- Use getref to determine in we have references, not ref since we
  implement a poor-man's ref for bootstrap jimsh
- bootstrap jimsh package doesn't return a "Can't load package"
  message if loading the package fails
- exec tests using [open |command] need pipe
- bootstrap jimsh can't set file times with [file mtime]

Signed-off-by: Steve Bennett <steveb@workware.net.au>

When boolean parsing was combined in commit
982ec4f5


it broken parsing of boolean values in expressions that
weren't standalone.

e.g. expr {true} was fine, but expr {true ? 4 : 5} was not.

Signed-off-by: Steve Bennett <steveb@workware.net.au>

In order for make-bootstrap-jim to reliably match #ifndef...JIM_BOOTSTRAP
with the corresponding #endif, a corresponding comment needs to be added
after the #endif

Signed-off-by: Steve Bennett <steveb@workware.net.au>

Add this depenency to avoid issues with parallel builds

Signed-off-by: Steve Bennett <steveb@workware.net.au>

v0.7.0-3-g35b88dc

Signed-off-by: Steve Bennett <steveb@workware.net.au>

Requires a truetype font file

Signed-off-by: Steve Bennett <steveb@workware.net.au>

Add example of integrating SDL event loop and the Tcl event loop

Signed-off-by: Steve Bennett <steveb@workware.net.au>

And add:
- poll ?script?
- optional window title

Signed-off-by: Steve Bennett <steveb@workware.net.au>

Now we only support using pkg-config to find SDL, and prefer SDL2 over SDL.
For compatibility between versions, the render surface is now cleared on flip.
And closing the window now results in a JIM_EXIT return code from flip.
Also supports [sdl clear] to clear the background to a given colour.

Signed-off-by: Steve Bennett <steveb@workware.net.au>

Signed-off-by: Steve Bennett <steveb@workware.net.au>

For speed and size, since it shares a lot of the same code with catch

Signed-off-by: Steve Bennett <steveb@workware.net.au>

It is convenient to be able to do just:

loop i 5 {
	body
}

Where the start value is 0.

Signed-off-by: Steve Bennett <steveb@workware.net.au>

Signed-off-by: Steve Bennett <steveb@workware.net.au>

This means that instead of just [list index 2+1], we can now do
[list index end-$n*2+1]

This applies to:

    lindex, linsert, lreplace, lset, lrange, lsort, regexp, regsub
    string index,first,last,range

Also add tests for both direct integer expressions and indexes.

Still needs doc update.

Signed-off-by: Steve Bennett <steveb@workware.net.au>

This means that $variable references and [commands] are not expanded.
This should mitigate security concerns when using the 'integer expression' feature.

It means that you must do:

    string repeat a $i*4

Not:

    string repeat a {$i*4}

Signed-off-by: Steve Bennett <steveb@workware.net.au>

For convenience, many commands now accept integer expressions
rather than only simple integers.

These are:

    loop, range, incr, string repeat, lrepeat, pack, unpack, rand

This simplifies many cases where previously expr {} or $() was required.
e.g.

    foreach i [range 4+1 2*$b] { ... }
    string repeat 2**$n a

Signed-off-by: Steve Bennett <steveb@workware.net.au>

This reverts commit 6b287b9c

.

These are needed for reference counting.

Signed-off-by: Steve Bennett <steveb@workware.net.au>

A command may return NULL, but set an error (e.g. Server closed the connection).
In this case, make sure to return the error.

Signed-off-by: Steve Bennett <steveb@workware.net.au>

These stored the currently executing proc args and body
(the same as are available via info args and info body),
but were never used anywhere.

Signed-off-by: Steve Bennett <steveb@workware.net.au>

It is especially convenient to add -1 for something like:

  lindex $list end-$BACK-1

or:

  string range $str $p $p+$len-1

Signed-off-by: Steve Bennett <steveb@workware.net.au>

If the build host doesn't have neither jimsh nor tclsh installed,
during 'configure' the autosetup will build 'autosetup/jimsh0'
inside the source tree. This happens also when out-of-tree build
is used.
Making dirty the source tree during out-of-tree build causes
applications that use jimtcl as submodule (e.g. OpenOCD) to fail
at 'make distcheck'.

Modify 'autosetup-find-tclsh' to build 'jimsh0' in the current
folder. For jimtcl project it would be the root of the source tree
or the root of the out-of-tree build.
Update 'Makefile.in' to search for 'jimsh0' in the new path during
'distclean'.

Reported-by: Paul Fertser <fercerpav@gmail.com>
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>

The working directory is not fully cleaned-up and remains dirty
after 'make distclean'.

Add file examples.api/Makefile in the list of files to remove
during 'make distclean'.

Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>

When building in-tree, the generated file is not ignored and the
tree appears as dirty.

Add the generated file to .gitignore.

Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>

Add support for comments in expressions

Signed-off-by: Steve Bennett <steveb@workware.net.au>

Fixes #183

Reported-by: Stuart Cassoff <stwo@bell.net>
Signed-off-by: Steve Bennett <steveb@workware.net.au>

Using the hiredis client library.
Synchronous API only.

Signed-off-by: Steve Bennett <steveb@workware.net.au>

Add Jim_CreateScriptFileHandler() to create a standard script filehandler
event that evaluates the given script with Jim_EvalObjBackground()
when the event occurs.

Also add Jim_FindFileHandler() to find a registered event handler.

Simplify aio by using these.

Signed-off-by: Steve Bennett <steveb@workware.net.au>

Signed-off-by: Steve Bennett <steveb@workware.net.au>

Ensure that 'info complete' returns 0 for a script is missing
the end quote such as "abc$def

Fixes #181

Signed-off-by: Steve Bennett <steveb@workware.net.au>

Using 'close w' with an ssl socket doesn't really work
because this is done only on the underlying socket.

Signed-off-by: Steve Bennett <steveb@workware.net.au>

Fixes: #182

Signed-off-by: Steve Bennett <steveb@workware.net.au>

It is not portable to connect to 0.0.0.0, expecting this to the same
as connecting to localhost/127.0.0.1, and the same for IPv6.
So explicitly connect to 127.0.0.1 or [::1]

Fixes #180

Signed-off-by: Steve Bennett <steveb@workware.net.au>

Loadable modules and tests
Fixes #179

Signed-off-by: Steve Bennett <steveb@workware.net.au>

Some systems produce 5e-05 while some produce 5e-5.
Both are acceptable.

Signed-off-by: Steve Bennett <steveb@workware.net.au>