shell.tcl

SQLite 2.8.6 源代码,用来在Linux/Unix/Windows上编译安装.它是一个小型的数据库,但是非常好用,速度也快,一般的数据库查询之类的操作据统计比MySQL,PostgreSQL

    set v(prior) $cmd
    regsub -all {[^ ]} $v(prompt) . x
    $w insert end $x
  }
  $w mark set insert end
  $w mark set out {insert linestart}
  $w yview insert
}

# Change the line to the previous line
#
proc console:Prior w {
  upvar #0 $w v
  if {$v(current)<=0} return
  incr v(current) -1
  set line [lindex $v(history) $v(current)]
  console:SetLine $w $line
}

# Change the line to the next line
#
proc console:Next w {
  upvar #0 $w v
  if {$v(current)>=$v(historycnt)} return
  incr v(current) 1
  set line [lindex $v(history) $v(current)]
  console:SetLine $w $line
}

# Change the contents of the entry line
#
proc console:SetLine {w line} {
  upvar #0 $w v
  scan [$w index insert] %d.%d row col
  set start $row.$v(plength)
  $w delete $start end
  $w insert end $line
  $w mark set insert end
  $w yview insert
}

# Called when the mouse button is pressed at position $x,$y on
# the console widget.
#
proc console:Button1 {w x y} {
  global tkPriv
  upvar #0 $w v
  set v(mouseMoved) 0
  set v(pressX) $x
  set p [console:nearestBoundry $w $x $y]
  scan [$w index insert] %d.%d ix iy
  scan $p %d.%d px py
  if {$px==$ix} {
    $w mark set insert $p
  }
  $w mark set anchor $p
  focus $w
}

# Find the boundry between characters that is nearest
# to $x,$y
#
proc console:nearestBoundry {w x y} {
  set p [$w index @$x,$y]
  set bb [$w bbox $p]
  if {![string compare $bb ""]} {return $p}
  if {($x-[lindex $bb 0])<([lindex $bb 2]/2)} {return $p}
  $w index "$p + 1 char"
}

# This routine extends the selection to the point specified by $x,$y
#
proc console:SelectTo {w x y} {
  upvar #0 $w v
  set cur [console:nearestBoundry $w $x $y]
  if {[catch {$w index anchor}]} {
    $w mark set anchor $cur
  }
  set anchor [$w index anchor]
  if {[$w compare $cur != $anchor] || (abs($v(pressX) - $x) >= 3)} {
    if {$v(mouseMoved)==0} {
      $w tag remove sel 0.0 end
    }
    set v(mouseMoved) 1
  }
  if {[$w compare $cur < anchor]} {
    set first $cur
    set last anchor
  } else {
    set first anchor
    set last $cur
  }
  if {$v(mouseMoved)} {
    $w tag remove sel 0.0 $first
    $w tag add sel $first $last
    $w tag remove sel $last end
    update idletasks
  }
}

# Called whenever the mouse moves while button-1 is held down.
#
proc console:B1Motion {w x y} {
  upvar #0 $w v
  set v(y) $y
  set v(x) $x
  console:SelectTo $w $x $y
}

# Called whenever the mouse leaves the boundries of the widget
# while button 1 is held down.
#
proc console:B1Leave {w x y} {
  upvar #0 $w v
  set v(y) $y
  set v(x) $x
  console:motor $w
}

# This routine is called to automatically scroll the window when
# the mouse drags offscreen.
#
proc console:motor w {
  upvar #0 $w v
  if {![winfo exists $w]} return
  if {$v(y)>=[winfo height $w]} {
    $w yview scroll 1 units
  } elseif {$v(y)<0} {
    $w yview scroll -1 units
  } else {
    return
  }
  console:SelectTo $w $v(x) $v(y)
  set v(timer) [after 50 console:motor $w]
}

# This routine cancels the scrolling motor if it is active
#
proc console:cancelMotor w {
  upvar #0 $w v
  catch {after cancel $v(timer)}
  catch {unset v(timer)}
}

# Do a Copy operation on the stuff currently selected.
#
proc console:Copy w {
  if {![catch {set text [$w get sel.first sel.last]}]} {
     clipboard clear -displayof $w
     clipboard append -displayof $w $text
  }
}

# Return 1 if the selection exists and is contained
# entirely on the input line.  Return 2 if the selection
# exists but is not entirely on the input line.  Return 0
# if the selection does not exist.
#
proc console:canCut w {
  set r [catch {
    scan [$w index sel.first] %d.%d s1x s1y
    scan [$w index sel.last] %d.%d s2x s2y
    scan [$w index insert] %d.%d ix iy
  }]
  if {$r==1} {return 0}
  if {$s1x==$ix && $s2x==$ix} {return 1}
  return 2
}

# Do a Cut operation if possible.  Cuts are only allowed
# if the current selection is entirely contained on the
# current input line.
#
proc console:Cut w {
  if {[console:canCut $w]==1} {
    console:Copy $w
    $w delete sel.first sel.last
  }
}

# Do a paste opeation.
#
proc console:Paste w {
  if {[console:canCut $w]==1} {
    $w delete sel.first sel.last
  }
  if {[catch {selection get -displayof $w -selection CLIPBOARD} topaste]} {
    return
  }
  set prior 0
  foreach line [split $topaste \n] {
    if {$prior} {
      console:Enter $w
      update
    }
    set prior 1
    $w insert insert $line
  }
}

# Enable or disable entries in the Edit menu
#
proc console:EnableEditMenu w {
  upvar #0 $w.t v
  set m $v(editmenu)
  if {$m=="" || ![winfo exists $m]} return
  switch [console:canCut $w.t] {
    0 {
      $m entryconf Copy -state disabled
      $m entryconf Cut -state disabled
    }
    1 {
      $m entryconf Copy -state normal
      $m entryconf Cut -state normal
    }
    2 {
      $m entryconf Copy -state normal
      $m entryconf Cut -state disabled
    }
  }
}

# Prompt for the user to select an input file, the "source" that file.
#
proc console:SourceFile w {
  set types {
    {{TCL Scripts}  {.tcl}}
    {{All Files}    *}
  }
  set f [tk_getOpenFile -filetypes $types -title "TCL Script To Source..."]
  if {$f!=""} {
    uplevel #0 source $f
  }
}

# Prompt the user for the name of a writable file.  Then write the
# entire contents of the console screen to that file.
#
proc console:SaveFile w {
  set types {
    {{Text Files}  {.txt}}
    {{All Files}    *}
  }
  set f [tk_getSaveFile -filetypes $types -title "Write Screen To..."]
  if {$f!=""} {
    if {[catch {open $f w} fd]} {
      tk_messageBox -type ok -icon error -message $fd
    } else {
      puts $fd [string trimright [$w get 1.0 end] \n]
      close $fd
    }
  }
}

# Erase everything from the console above the insertion line.
#
proc console:Clear w {
  $w delete 1.0 {insert linestart}
}

# Start the console
#
# console:create {.@console} {% } {Tcl/Tk Console}
###############################################################################


if {[info command sqlite]==""} {
  load ./tclsqlite.so sqlite
}



proc set_title {title} {
  if {$title==""} {
    set main SQLite
  } else {
    set main "SQLite - $title"
  }
  wm title . $main
  wm iconname . SQLite
}
set_title {}

frame .mb -bd 1 -relief raised
pack .mb -side top -fill x
menubutton .mb.file -text File -underline 0 -menu .mb.file.m
pack .mb.file -side left -padx 5
set m [menu .mb.file.m]
$m add separator
$m add command -label Exit -command exit
menubutton .mb.edit -text Edit -underline 0 -menu .mb.edit.m
pack .mb.edit -side left -padx 5
#menu .mb.edit.m

frame .f
pack .f -side top -fill both -expand 1
console:create_child .f {sqlite> } .mb.edit.m