/*
HParse()
© Avi Aryan

5th Revision - 8/7/14
=========================================================================
Extract Autohotkey hotkeys from user-friendly shortcuts reliably and V.V
=========================================================================
==========================================
EXAMPLES - Pre-Runs
==========================================

msgbox % Hparse("Cntrol + ass + S", false)		;returns <blank>   	As 'ass' is out of scope and RemoveInvaild := false
msgbox % Hparse("Contrl + At + S")		;returns ^!s
msgbox % Hparse("^!s")			;returns	^!s		as the function-feed is already in Autohotkey format.
msgbox % Hparse("LeftContrl + X")		;returns Lcontrol & X
msgbox % Hparse("Contrl + Pageup + S")		;returns <blank>  As the hotkey is invalid
msgbox % HParse("PagUp + Ctrl", true)		;returns  ^PgUp  	as  ManageOrder is true (by default)
msgbox % HParse("PagUp + Ctrl", true, false)		;returns  <blank>  	as ManageOrder is false and hotkey is invalid	
msgbox % Hparse("Ctrl + Alt + Ctrl + K")		;returns  <blank> 	as two Ctrls are wrong
msgbox % HParse("Control + Alt")		;returns  ^Alt and NOT ^!
msgbox % HParse("Ctrl + F1 + Nmpd1")		;returns <blank>	As the hotkey is invalid
msgbox % HParse("Prbitscreen + f1")		;returns	PrintScreen & F1
msgbox % HParse("Prbitscreen + yyy")		;returns	PrintScreen		As RemoveInvalid is enabled by default.
msgbox % HParse("f1+ browser_srch")		;returns	F1 & Browser_Search
msgbox % HParse("Ctrl + joy1")			;returns	Ctrl & Joy1
msgbox % Hparse("pagup & paegdown")		;returns	PgUp & PgDn
MsgBox % HParse("Ctrl + printskreen", 1, 1, 1) 	; SEND Mode - on returns ^{printscreen}
msgbox % Hparse_rev("^!s")		;returns Ctrl+Alt+S
msgbox % Hparse_rev("Pgup & PgDn")		;returns Pageup & PgDn
*/

;###################################################################
;PARAMETERS - HParse() 		[See also Hparse_Rev() below]
;-------------------------------
;HParse(Hotkey, RemoveInvalid, ManageOrder, sendMd)
;###################################################################

;• Hotkey - The user shortcut such as (Control + Alt + X) to be converted

;• RemoveInvalid(true) - Remove Invalid entries such as the 'ass' from (Control + ass + S) so that the return is ^s. When false the function will return <blank> when an
;  invalid entry is found.
  
;• ManageOrder(true) - Change (X + Control) to ^x and not x^ so that you are free from errors. If false, a <blank> value is returned when the hotkey is found un-ordered.

;+ SendMd(true) - returns ^{printscreen} instead of ^printscreen so that the hotkey properly works with the Send command

HParse(Hotkey, RemoveInvaild = true, ManageOrder = true, sendMd=false)
{

firstkey := Substr(Hotkey, 1, 1)
if firstkey in ^,!,+,#
	return, Hotkey

loop,parse,Hotkey,+-&,%a_space%
{
	if (Strlen(A_LoopField) != 1)
	{
		parsed := Hparse_LiteRegexM(A_LoopField)
		if sendMd && (StrLen(parsed)>1) && (Instr(parsed, "vk") != 1)
			parsed := "{" parsed "}"
		If !(RemoveInvaild)
		{
			IfEqual,parsed
			{
				Combo = 
				break
			}
			else
				Combo .= " & " . parsed
		}
		else
			IfNotEqual,parsed
				Combo .= " & " . parsed
	}
	else
		Combo .= " & " . A_LoopField
}

non_hotkey := 0
IfNotEqual, Combo		;Convert the hotkey to perfect format
{
	StringTrimLeft,Combo,Combo,3
	loop,parse,Combo,&,%A_Space%
	{
		if A_Loopfield not in ^,!,+,#
			non_hotkey+=1
	}
;END OF LOOP
	if (non_hotkey == 0)
	{
		StringRight,rightest,Combo,1
		StringTrimRight,Combo,Combo,1
		IfEqual,rightest,^
			rightest = Ctrl
		else IfEqual,rightest,!
			rightest = Alt
		ELSE IfEqual,rightest,+
			rightest = Shift
		else rightest = LWin
		Combo := Combo . Rightest
	}
;Remove last non
	IfLess,non_hotkey,2
	{
	IfNotInString,Combo,Joy
	{
		StringReplace,Combo,Combo,%A_Space%&%A_Space%,,All
		temp := Combo
		loop,parse,temp
		{
			if A_loopfield in ^,!,+,#
			{
			StringReplace,Combo,Combo,%A_loopfield%
			_hotkey .= A_loopfield
			}
		}
		Combo := _hotkey . Combo
	
		If !(ManageOrder)				;ManageOrder
			IfNotEqual,Combo,%temp%
				Combo = 
	
		temp := "^!+#"		;just reusing the variable . Checking for Duplicates Actually.
		IfNotEqual,Combo
		{
			loop,parse,temp
			{
				StringGetPos,pos,Combo,%A_loopfield%,L2
				IF (pos != -1){
					Combo = 
					break
				}
			}
		}
	;End of Joy
	}
	else	;Managing Joy
	{
		StringReplace,Combo,Combo,^,Ctrl
		StringReplace,Combo,Combo,!,Alt
		StringReplace,Combo,Combo,+,Shift
		StringReplace,Combo,Combo,#,LWin
		StringGetPos,pos,Combo,&,L2
		if (pos != -1)
			Combo = 
	}
}
else
{
	StringGetPos,pos,Combo,&,L2
	if (pos != -1)
		Combo = 
}
}

return, Combo
}

;###########################################################################################
;Hparse_rev(Keycombo)
;	Returns the user displayable format of Ahk Hotkey
;###########################################################################################

HParse_rev(Keycombo){

	if Instr(Keycombo, "&")
	{
		loop,parse,Keycombo,&,%A_space%%A_tab%
			toreturn .= A_LoopField " + "
		return Substr(toreturn, 1, -3)
	}
	Else
	{
		StringReplace, Keycombo, Keycombo,^,Ctrl&
		StringReplace, Keycombo, Keycombo,#,Win&
		StringReplace, Keycombo, Keycombo,+,Shift&
		StringReplace, Keycombo, Keycombo,!,Alt&
		loop,parse,Keycombo,&,%A_space%%A_tab%
			toreturn .= ( Strlen(A_LoopField)=1 ? Hparse_StringUpper(A_LoopField) : A_LoopField ) " + "
		return Substr(toreturn, 1, -3)
	}
}

Hparse_StringUpper(str){
	StringUpper, o, str
	return o
}

;------------------------------------------------------
;SYSTEM FUNCTIONS : NOT FOR USER'S USE
;------------------------------------------------------

Hparse_LiteRegexM(matchitem, primary=1)
{

regX := Hparse_ListGen("RegX", primary)
keys := Hparse_Listgen("Keys", primary)
matchit := matchitem

loop,parse,Regx,`r`n,
{
	curX := A_LoopField
	matchitem := matchit
	exitfrombreak := false

	loop,parse,A_LoopField,*
	{
		if (A_index == 1)
			if (SubStr(matchitem, 1, 1) != A_LoopField){
				exitfrombreak := true
				break
			}

		if (Hparse_comparewith(matchitem, A_loopfield))
			matchitem := Hparse_Vanish(matchitem, A_LoopField)
		else{
			exitfrombreak := true
			break
		}
	}

	if !(exitfrombreak){
		linenumber := A_Index
		break
	}
}

IfNotEqual, linenumber
{
	StringGetPos,pos1,keys,`n,% "L" . (linenumber - 1)
	StringGetPos,pos2,keys,`n,% "L" . (linenumber)
	return, Substr(keys, (pos1 + 2), (pos2 - pos1 - 1))
}
else
	return Hparse_LiteRegexM(matchit, 2)
}
; Extra Functions -----------------------------------------------------------------------------------------------------------------

Hparse_Vanish(matchitem, character){
	StringGetPos,pos,matchitem,%character%,L
	StringTrimLeft,matchitem,matchitem,(pos + 1)
	return, matchitem
}

Hparse_comparewith(first, second)
{
if first is Integer
	IfEqual,first,%second%
		return, true
	else
		return, false

IfInString,first,%second%
	return, true
else
	return, false
}

;######################   DANGER    ################################
;SIMPLY DONT EDIT BELOW THIS . MORE OFTEN THAN NOT, YOU WILL MESS IT.
;###################################################################
Hparse_ListGen(what,primary=1){
if (primary == 1)
{
IfEqual,what,Regx
Rvar = 
(
L*c*t
r*c*t
l*s*i
r*s*i
l*a*t
r*a*t
S*p*c
C*t*r
A*t
S*t
W*N
t*b
E*r
E*s*c
B*K
D*l
I*S
H*m
E*d
P*u
p*d
l*b*t
r*b*t
m*b*t
up
d*n
l*f
r*t
F*1
F*2
F*3
F*4
F*5
F*6
F*7
F*8
F*9
F*10
F*11
F*12
N*p*Do
N*p*D*v
N*p*M*t
N*p*d*Ad
N*p*S*b
N*p*E*r
s*l*k
c*l
n*l*k
p*s
c*t*b
pa*s
b*r*k
x*b*1
x*b*2
z*z*z*z*callmelazybuthtisisaworkaround
)
;====================================================
;# Original return values below (in respect with their above positions, dont EDIT)
IfEqual,what,Keys
Rvar = 
(
LControl
RControl 
LShift
RShift
LAlt
RAlt
space
^
!
+
#
Tab
Enter
Escape
Backspace
Delete
Insert
Home
End
PgUp
PgDn
LButton
RButton
MButton
Up
Down
Left
Right
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
NumpadDot
NumpadDiv
NumpadMult
NumpadAdd
NumpadSub
NumpadEnter
ScrollLock
CapsLock
NumLock
PrintScreen
CtrlBreak
Pause
Break
XButton1
XButton2
A_lazys_workaround
)
}
else
{
;here starts the second preference list.
IfEqual,what,Regx
Rvar=
(
N*p*0
N*p*1
N*p*2
N*p*3
N*p*4
N*p*5
N*p*6
N*p*7
N*p*8
N*p*9
F*13
F*14
F*15
F*16
F*17
F*18
F*19
F*20
F*21
F*22
F*23
F*24
N*p*I*s
N*p*E*d
N*p*D*N
N*p*P*D
N*p*L*f
N*p*C*r
N*p*R*t
N*p*H*m
N*p*Up
N*p*P*U
N*p*D*l
J*y*1
J*y*2
J*y*3
J*y*4
J*y*5
J*y*6
J*y*7
J*y*8
J*y*9
J*y*10
J*y*11
J*y*12
J*y*13
J*y*14
J*y*15
J*y*16
J*y*17
J*y*18
J*y*19
J*y*20
J*y*21
J*y*22
J*y*23
J*y*24
J*y*25
J*y*26
J*y*27
J*y*28
J*y*29
J*y*30
J*y*31
J*y*32
B*_B*k
B*_F*r
B*_R*e*h
B*_S*p
B*_S*c
B*_F*t
B*_H*m
V*_M*e
V*_D*n
V*_U
M*_N*x
M*_P
M*_S*p
M*_P*_P
L*_M*l
L*_M*a
L*_A*1
L*_A*2

)
IfEqual,what,keys
Rvar=
(
Numpad0
Numpad1
Numpad2
Numpad3
Numpad4
Numpad5
Numpad6
Numpad7
Numpad8
Numpad9
F13
F14
F15
F16
F17
F18
F19
F20
F21
F22
F23
F24
NumpadIns
NumpadEnd
NumpadDown
NumpadPgDn
NumpadLeft
NumpadClear
NumpadRight
NumpadHome
NumpadUp
NumpadPgUp
NumpadDel
Joy1
Joy2
Joy3
Joy4
Joy5
Joy6
Joy7
Joy8
Joy9
Joy10
Joy11
Joy12
Joy13
Joy14
Joy15
Joy16
Joy17
Joy18
Joy19
Joy20
Joy21
Joy22
Joy23
Joy24
Joy25
Joy26
Joy27
Joy28
Joy29
Joy30
Joy31
Joy32
Browser_Back
Browser_Forward
Browser_Refresh
Browser_Stop
Browser_Search
Browser_Favorites
Browser_Home
Volume_Mute
Volume_Down
Volume_Up
Media_Next
Media_Prev
Media_Stop
Media_Play_Pause
Launch_Mail
Launch_Media
Launch_App1
Launch_App2

)
}
;<<<<<<<<<<<<<<<<END>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
return, Rvar
}