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#!/usr/bin/env python
import sys, re, getopt
class Menusystem:
types = {"run" : "OPT_RUN",
"inactive" : "OPT_INACTIVE",
"checkbox" : "OPT_CHECKBOX",
"radiomenu": "OPT_RADIOMENU",
"sep" : "OPT_SEP",
"invisible": "OPT_INVISIBLE",
"radioitem": "OPT_RADIOITEM",
"exitmenu" : "OPT_EXITMENU",
"login" : "login", # special type
"submenu" : "OPT_SUBMENU"}
entry_init = { "item" : "",
"info" : "",
"data" : "",
"ipappend" : 0, # flag to send in case of PXELINUX
"helpid" : 65535, # 0xFFFF
"shortcut":"-1",
"state" : 0, # initial state of checkboxes
"argsmenu": "", # name of menu containing arguments
"perms" : "", # permission required to execute this entry
"_updated" : None, # has this dictionary been updated
"type" : "run" }
menu_init = { "title" : "",
"row" : "0xFF", # let system decide position
"col" : "0xFF",
"_updated" : None,
"name" : "" }
system_init ={ "videomode" : "0xFF",
"title" : "Menu System",
"top" : "1",
"left" : "1" ,
"bot" : "21",
"right":"79",
"helpdir" : "/isolinux/help",
"pwdfile" : "",
"pwdrow" : "23",
"editrow" : "23",
"skipcondn" : "0",
"skipcmd" : ".exit",
"startfile": "",
"onerrorcmd":".repeat",
"exitcmd" : ".exit",
"exitcmdroot" : "",
"timeout" : "600",
"timeoutcmd":".beep",
"totaltimeout" : "0",
"totaltimeoutcmd" : ".wait"
}
shift_flags = { "alt" : "ALT_PRESSED",
"ctrl" : "CTRL_PRESSED",
"shift": "SHIFT_PRESSED",
"caps" : "CAPSLOCK_ON",
"num" : "NUMLOCK_ON",
"ins" : "INSERT_ON"
}
reqd_templates = ["item","login","menu","system"]
def __init__(self,template):
self.state = "system"
self.code_template_filename = template
self.menus = []
self.init_entry()
self.init_menu()
self.init_system()
self.vtypes = " OR ".join(list(self.types.keys()))
self.vattrs = " OR ".join([x for x in list(self.entry.keys()) if x[0] != "_"])
self.mattrs = " OR ".join([x for x in list(self.menu.keys()) if x[0] != "_"])
def init_entry(self):
self.entry = self.entry_init.copy()
def init_menu(self):
self.menu = self.menu_init.copy()
def init_system(self):
self.system = self.system_init.copy()
def add_menu(self,name):
self.add_item()
self.init_menu()
self.menu["name"] = name
self.menu["_updated"] = 1
self.menus.append( (self.menu,[]) )
def add_item(self):
if self.menu["_updated"]: # menu details have changed
self.menus[-1][0].update(self.menu)
self.init_menu()
if self.entry["_updated"]:
if not self.entry["info"]:
self.entry["info"] = self.entry["data"]
if not self.menus:
print("Error before line %d" % self.lineno)
print("REASON: menu must be declared before a menu item is declared")
sys.exit(1)
self.menus[-1][1].append(self.entry)
self.init_entry()
def set_item(self,name,value):
if name not in self.entry:
msg = ["Unknown attribute %s in line %d" % (name,self.lineno)]
msg.append("REASON: Attribute must be one of %s" % self.vattrs)
return "\n".join(msg)
if name=="type" and value not in self.types:
msg = [ "Unrecognized type %s in line %d" % (value,self.lineno)]
msg.append("REASON: Valid types are %s" % self.vtypes)
return "\n".join(msg)
if name=="shortcut":
if (value != "-1") and not re.match("^[A-Za-z0-9]$",value):
msg = [ "Invalid shortcut char '%s' in line %d" % (value,self.lineno) ]
msg.append("REASON: Valid values are [A-Za-z0-9]")
return "\n".join(msg)
elif value != "-1": value = "'%s'" % value
elif name in ["state","helpid","ipappend"]:
try:
value = int(value)
except:
return "Value of %s in line %d must be an integer" % (name,self.lineno)
self.entry[name] = value
self.entry["_updated"] = 1
return ""
def set_menu(self,name,value):
if name not in self.menu:
return "Error: Unknown keyword %s" % name
self.menu[name] = value
self.menu["_updated"] = 1
return ""
def set_system(self,name,value):
if name not in self.system:
return "Error: Unknown keyword %s" % name
if name == "skipcondn":
try: # is skipcondn a number?
a = int(value)
except: # it is a "-" delimited sequence
value = value.lower()
parts = [ self.shift_flags.get(x.strip(),None) for x in value.split("-") ]
self.system["skipcondn"] = " | ".join([_f for _f in parts if _f])
else:
self.system[name] = value
def set(self,name,value):
# remove quotes if given
if (value[0] == value[-1]) and (value[0] in ['"',"'"]): # remove quotes
value = value[1:-1]
if self.state == "system":
err = self.set_system(name,value)
if not err: return
if self.state == "menu":
err = self.set_menu(name,value)
# change state to entry it menu returns error
if err:
err = None
self.state = "item"
if self.state == "item":
err = self.set_item(name,value)
if not err: return
# all errors so return item's error message
print(err)
sys.exit(1)
def print_entry(self,entry,fd):
entry["type"] = self.types[entry["type"]]
if entry["type"] == "login": #special type
fd.write(self.templates["login"] % entry)
else:
fd.write(self.templates["item"] % entry)
def print_menu(self,menu,fd):
if menu["name"] == "main": self.foundmain = 1
fd.write(self.templates["menu"] % menu)
if (menu["row"] != "0xFF") or (menu["col"] != "0xFF"):
fd.write(' set_menu_pos(%(row)s,%(col)s);\n' % menu)
def output(self,filename):
curr_template = None
contents = []
self.templates = {}
regbeg = re.compile(r"^--(?P<name>[a-z]+) BEGINS?--\n$")
regend = re.compile(r"^--[a-z]+ ENDS?--\n$")
ifd = open(self.code_template_filename,"r")
for line in ifd.readlines():
b = regbeg.match(line)
e = regend.match(line)
if e: # end of template
if curr_template:
self.templates[curr_template] = "".join(contents)
curr_template = None
continue
if b:
curr_template = b.group("name")
contents = []
continue
if not curr_template: continue # lines between templates are ignored
contents.append(line)
ifd.close()
missing = None
for x in self.reqd_templates:
if x not in self.templates: missing = x
if missing:
print("Template %s required but not defined in %s" % (missing,self.code_template_filename))
if filename == "-":
fd = sys.stdout
else: fd = open(filename,"w")
self.foundmain = None
fd.write(self.templates["header"])
fd.write(self.templates["system"] % self.system)
for (menu,items) in self.menus:
self.print_menu(menu,fd)
for entry in items: self.print_entry(entry,fd)
fd.write(self.templates["footer"])
fd.close()
if not self.foundmain:
print("main menu not found")
print(self.menus)
sys.exit(1)
def input(self,filename):
if filename == "-":
fd = sys.stdin
else: fd = open(filename,"r")
self.lineno = 0
self.state = "system"
for line in fd.readlines():
self.lineno = self.lineno + 1
if line and line[-1] in ["\r","\n"]: line = line[:-1]
if line and line[-1] in ["\r","\n"]: line = line[:-1]
line = line.strip()
if line and line[0] in ["#",";"]: continue
try:
# blank line -> starting a new entry
if not line:
if self.state == "item": self.add_item()
continue
# starting a new section?
if line[0] == "[" and line[-1] == "]":
self.state = "menu"
self.add_menu(line[1:-1])
continue
# add property of current entry
pos = line.find("=") # find the first = in string
if pos < 0:
print("Syntax error in line %d" % self.lineno)
print("REASON: non-section lines must be of the form ATTRIBUTE=VALUE")
sys.exit(1)
attr = line[:pos].strip().lower()
value = line[pos+1:].strip()
self.set(attr,value)
except:
print("Error while parsing line %d: %s" % (self.lineno,line))
raise
fd.close()
self.add_item()
def usage():
print(sys.argv[0]," [options]")
print("--input=<file> is the name of the .menu file declaring the menu structure")
print("--output=<file> is the name of generated C source")
print("--template=<file> is the name of template to be used")
print()
print("input and output default to - (stdin and stdout respectively)")
print("template defaults to adv_menu.tpl")
sys.exit(1)
def main():
tfile = "adv_menu.tpl"
ifile = "-"
ofile = "-"
opts,args = getopt.getopt(sys.argv[1:], "hi:o:t:",["input=","output=","template=","help"])
if args:
print("Unknown options %s" % args)
usage()
for o,a in opts:
if o in ["-i","--input"]:
ifile = a
elif o in ["-o", "--output"]:
ofile = a
elif o in ["-t","--template"]:
tfile = a
elif o in ["-h","--help"]:
usage()
inst = Menusystem(tfile)
inst.input(ifile)
inst.output(ofile)
if __name__ == "__main__":
main()
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