TV apr 16 03 13:16
I was wondering how to find matching brackets, or braces would be fine too, I guess even quotes would do, in *ANY* syntactically corrent tcl/tk script?
I mean preferably a way which is applicable to any code which can be fed to the interpreters, I mean complete general applicability, including comments.
I tried various things as in bwise amoung which some working methods, but I need a nice proc for a simple enough application, like the tml pages I want to generate html pages from a html + tcl extended page in a text editor.
While I'm asking, maybe there is a tcl coded tcl parser of some generality somewhere to be downloaded?
RS: info complete will bring you most of the way, I think: "info complete command Returns 1 if command is a complete Tcl command in the sense of having no unclosed quotes, braces, brackets or array element names, If the command doesn't appear to be complete then 0 is returned. This command is typically used in line-oriented input environments to allow users to type in commands that span multiple lines; if the command isn't complete, the script can delay evaluating it until additional lines have been typed to complete the command. " (TclHelp)
17apr03 jcw - A bit of end-of-week hacking led to:
set a "{ a { b{ { c {d}}e } }} f {g h}" puts a=$a set b [regexp -all -indices -inline \{ $a] puts b=$b set e [regexp -all -indices -inline \} $a] puts e=$e set n [split [string repeat 0 [string length $a]] ""] foreach x $b { lset n [lindex $x 0] +1 } foreach x $e { lset n [lindex $x 0] -1 } puts n=$n set l 0 set r {} foreach x $n { append r [incr l $x] } puts a=$a puts r=$r puts "matching prefix: [string range $a 0 [string first 0 $r]]"
Output:
a={ a { b{ { c {d}}e } }} f {g h} b={0 0} {4 4} {7 7} {9 9} {13 13} {26 26} e={15 15} {16 16} {19 19} {21 21} {22 22} {30 30} n=+1 0 0 0 +1 0 0 +1 0 +1 0 0 0 +1 0 -1 -1 0 0 -1 0 -1 -1 0 0 0 +1 0 0 0 -1 a={ a { b{ { c {d}}e } }} f {g h} r=1111222334444554333221000011110 matching prefix: { a { b{ { c {d}}e } }}