Files
q-tools/files/foldermenu.py
2019-01-03 21:22:14 +02:00

493 lines
16 KiB
Python
Executable File

#!/usr/bin/env python
import os
import sys
import subprocess
import termios
import tty
import readline
import math
readline.parse_and_bind('tab: complete')
readline.parse_and_bind('set editing-mode vi')
MENUFILE='.foldermenu'
DEFAULTFILE = os.path.expanduser(os.path.join('~','.config','foldermenu','default'))
VERSION="0.4"
def setup_options():
''' Setup the command line options '''
from argparse import ArgumentParser
parser=ArgumentParser(description="Prints folder specific shell commands stored in '"+MENUFILE+
"' file, and in addition the executables in the current folder. "+
"Menufile format for each line: 'description:command'. "+
"If the command ends in '&' it is run in the background.")
parser.add_argument("-1","--one-shot",action='store_true', dest='once',default=False,
help="Launch only once, then exit")
parser.add_argument("-b","--no-banner", action='store_false', dest='banner', default=True,
help="Do not show banners. Banners are ## starting lines in the file")
parser.add_argument("-d","--no-defaults",action='store_false', dest='defaults',default=True,
help="Do not show default entries from "+DEFAULTFILE)
parser.add_argument("-x","--no-exec",action='store_false', dest='executables',default=True,
help="Do not show executables in the listing.")
parser.add_argument("--columns",'-f','-C',type=int,action='store', dest='columns',default=0,
help="Number of columns. 0 for automatic")
parser.add_argument("-l","--list",action='store_true', dest='list',default=False,
help="Print the list, don't wait for keypress.")
parser.add_argument("--command",'-c',type=str,action='store', dest='command',
help="Command to run (1-9a-z..), any argumets after -- are forwarded to the command ")
parser.add_argument("--no-colors",'--nc',action="store_false",dest="colors",default=True,
help="Disable colored output")
parser.add_argument("--horizontal",'-H',action="store_true",dest="horizontal",default=False,
help="Horizontal order of items, only valid for -l listing.")
parser.add_argument("--version",action='version', version=VERSION)
parser.add_argument("args",type=str,action="store",default="",nargs="?",
help="Arguments for the command, if -c used. The string will be re-parsed with shutils. Use '--' to skip local parsing.")
options = parser.parse_args()
if not os.path.exists(DEFAULTFILE):
options.defaults = False
return options
def termsize():
rows, columns = os.popen('stty size', 'r').read().split()
return (int(rows), int(columns))
def ichr(i):
''' convert integer to 1-9, a-z, A-Z, omitting q,x '''
if i < 10:
return str(i)
i += 87
if i > 112:
i += 1
if i > 119:
i += 1
if i > 122:
i += 64 - 122
return chr(i)
class bc:
MAG = '\033[95m'
BLU = '\033[94m'
GRE = '\033[92m'
YEL = '\033[93m'
RED = '\033[91m'
CYA = '\033[96m'
WHI = '\033[1m'
END = '\033[0m'
CLR = '\033[2J'
def disable(self):
self.MAG = ''
self.BLU = ''
self.GRE = ''
self.YEL = ''
self.RED = ''
self.CYA = ''
self.WHI = ''
self.END = ''
def pos(self,y,x):
return "\033[%s;%sH"%( y, x )
def posprint(self, y, x, s):
sys.stdout.write( self.pos(y, x) + str(s) )
class getch:
def __init__(self):
import sys, tty, termios
def get(self):
fd = sys.stdin.fileno()
old_settings = termios.tcgetattr(fd)
try:
tty.setraw(sys.stdin.fileno())
ch = sys.stdin.read(1)
finally:
termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
return ch
class launch_item:
''' Class for launchable items '''
def __init__(self, command, description, launcher):
self.command = command
self.description = description
self.launcher = launcher
class entry_collection:
''' Object containing the list items, and the printing methods '''
def __init__(self, options):
self.options = options
self.menu_keys=[ichr(i+1) for i in range(60)]
self.args = ''
self.co = bc()
self.dir_mode = False
self.max_length = 0
self.initialize()
if not self.options.colors:
self.co.disable()
def initialize(self):
self.entries = []
self.dirs = []
self.banner = []
if self.options.defaults:
self.read_menu(DEFAULTFILE)
self.read_menu()
self.read_folder()
self.entries = self.entries[0:60]
self.dirs = self.dirs[0:60]
if len(self.entries) > 0:
self.max_length = max([len(e.description) for e in self.entries]) + 1
def set_args(self, args):
self.args = args
def read_menu(self, menu_file = MENUFILE):
''' Read the menu file '''
if os.path.exists(menu_file):
with open(menu_file, 'rt') as f:
for row in f:
if row.strip() == '':
continue
if row[0:2] == '##':
self.banner.append(
row[2:].replace("\n","").replace("\r","")
)
continue
if row[0] == '#':
continue
row = row.strip().split(':',1)
if len(row) == 1:
row = [ "$" + row[0].strip(), row[0] ]
else:
row = [ row[0].strip(), row[1] ]
self.entries.append(
launch_item(
command = row[1],
description = row[0],
launcher = "menu"
)
)
def read_folder(self):
''' Read folder contents, return executable files and dirs '''
self.dirs.append(
launch_item(
command = '..',
description = '..',
launcher = "dir"
)
)
dirs = []
executables = []
for f in os.listdir('.'):
if os.path.isfile(f):
if os.access(f, os.X_OK):
executables.append(f)
if os.path.isdir(f) and f[0] != '.':
dirs.append(f)
dirs.sort()
for d in dirs:
self.dirs.append(
launch_item(
command = d,
description = d,
launcher = "dir"
)
)
if self.options.executables:
executables.sort()
for e in executables:
self.entries.append(
launch_item(
command = e,
description = e,
launcher = "exec"
)
)
def entry_color(self, launcher):
if launcher == "dir":
return self.co.WHI
if launcher == "exec":
return self.co.GRE
if launcher == "menu":
return self.co.CYA
def menu(self):
""" draws the menu at the top of the screen """
if self.dir_mode:
helptext = "[.]executables"
my_entries = self.dirs
else:
helptext = '[.]folders [-]args (%s%s%s)'%(
self.co.END,
self.args,
self.co.YEL
)
my_entries = self.entries
maxrows, maxcolumns = termsize()
rows = maxrows - 5
maxcolumns -= 10
if self.options.columns == 0:
pars = 1
if len(my_entries) > 9:
pars = 2
if len(my_entries) > 30:
pars = 3
pars = float(pars)
else:
pars = float(self.options.columns)
if self.options.banner:
banner = self.banner
else:
banner = []
blen = len(banner)
cwd = os.path.basename( os.getcwd() )[0:15]
self.co.posprint(
1,
1,
self.co.END + self.co.CLR
)
self.co.posprint(
1,
3,
"%s%s%s [q/x]exit %s%s"%(
self.co.WHI,
cwd,
self.co.YEL,
helptext,
self.co.END
)
)
for i, e in enumerate(banner):
self.co.posprint(
i+2,
0,
e
)
rows = int( math.ceil( len(my_entries) / pars ) )
while rows > maxrows:
pars += 1
rows = int( math.ceil( len(my_entries) / pars ) )
maxcolumns = int(math.ceil(maxcolumns / pars))
r = 1 + blen
par = 1
for entry, key in zip(my_entries, self.menu_keys):
if r - blen > rows:
par += 1
r = 1 + blen
printline = entry.description
if len(printline) > maxcolumns:
printline = printline[:maxcolumns] + "..."
if par == 1:
column = 2
border = ""
else:
column = maxcolumns * ( par - 1 )
border = '| '
self.co.posprint(
r+1,
column,
"%s%s%s%s %s%s%s"%(
border,
self.co.WHI,
key,
self.co.END,
self.entry_color(entry.launcher),
printline,
self.co.END
)
)
r += 1
self.co.posprint(
rows + 2 + blen,
0,
"#"
)
def list(self):
""" draws the list at cursor """
maxrows, maxcolumns = termsize()
rows = maxrows - 5
maxcolumns -= 10
# heuristics for guessing column count
if self.options.columns == 0:
pars = 1.0
if len(self.entries) > 9:
pars = max(
1.0,
math.floor(
maxcolumns / float(self.max_length)
)
)
while len(self.entries) / pars < pars:
pars -= 1
else:
pars = float(self.options.columns)
rows = int(math.ceil( len(self.entries) / float(pars) ))
maxcolumns = int(math.floor(maxcolumns / pars)) - 2
# If names won't fit the columns, make sure at least 3 characters are visible
if maxcolumns < 6:
origmaxrows, origmaxcolumns = termsize()
origmaxrows -= 5
origmaxcolumns -= 10
while maxcolumns < 6:
pars -= 1
rows = int(math.ceil( len(self.entries) / float(pars) ))
maxcolumns = int(math.floor( origmaxcolumns / pars )) - 2
self.max_length = min(maxcolumns, self.max_length)
if self.options.horizontal:
pars, rows = rows, pars
formatted = []
for r in range(int(rows)):
formatted.append([])
for p in range(int(pars)):
formatted[r].append(' '*(self.max_length))
if self.options.horizontal:
formatted[r][p] += ' '
r = 0
par = 0
for entry,key in zip(self.entries, self.menu_keys):
if r >= rows:
par += 1
r = 0
printline = entry.description[:(maxcolumns-3)]
printline += ' '*(self.max_length-len(printline)-1)
formatted[r][par]="%s%s%s %s%s%s"%(
self.co.WHI,
key,
self.co.END,
self.entry_color(entry.launcher),
printline,
self.co.END
)
r += 1
if self.options.horizontal:
# let's shuffle the deck, and print values in horizontal order:
formatted = zip(*formatted)
if self.options.banner:
if self.banner:
print("\n".join(self.banner))
for row in formatted:
print '|'.join(row)
def launch(self,key):
''' launch the given entry '''
bg = False
idx = self.menu_keys.index(key)
# note, no error checking here
if self.dir_mode:
command_str = self.dirs[idx].command
os.chdir(command_str)
return
# continue here if not changing folders
command_str = self.entries[idx].command
if command_str[-1] == '&':
#Run the program in background
command_str = command_str[:-1]
bg = True
if len(self.args) > 0:
command_str += ' ' + self.args
if self.entries[idx].launcher == 'exec':
command_str = './' + command_str
if not self.options.command:
print(command_str)
try:
if bg:
subprocess.Popen(
command_str,
stderr = subprocess.PIPE,
shell=True,
executable="/bin/bash"
)
else:
subprocess.call(
command_str,
stderr = subprocess.STDOUT,
shell = True,
executable = "/bin/bash"
)
except:
print('Non-zero exit code: "' + command_str + '"')
if not (self.options.command or self.options.once or bg):
print('Press any key...')
ch=getch()
inkey=ord(ch.get())
def flip_mode(self):
self.dir_mode = not self.dir_mode
def is_key(self, key):
if self.dir_mode:
my_len = len(self.dirs)
else:
my_len = len(self.entries)
try:
idx = self.menu_keys.index(key)
except ValueError:
return (False, 'Not a possible key')
if idx + 1 > my_len:
return (False, 'No such entry')
return (True, '')
def start_engines():
options = setup_options()
entries = entry_collection(options)
if options.list:
entries.list()
if not options.command:
sys.exit(0)
if options.command:
found, message = entries.is_key(options.command)
if not found:
print(message)
sys.exit(1)
entries.set_args(options.args)
entries.launch(options.command)
sys.exit(0)
ch = getch()
while True:
entries.menu()
inkey = ord(ch.get())
#print('-'+str((inkey))+'-')
if inkey in (113, 120, 27, 3, 24, 4): # esc, q, x
print('Exited in: ' + os.getcwd())
sys.exit(0)
if inkey == 45: # -
print('')
readline.set_startup_hook(lambda: readline.insert_text(entries.args))
args = raw_input('args: ')
entries.set_args(args)
readline.set_startup_hook(None)
if inkey == 46: # .
entries.flip_mode()
found, message = entries.is_key(chr(inkey))
if found:
entries.launch(chr(inkey))
if options.once and not entries.dir_mode:
sys.exit(0)
entries.initialize()
if __name__ == "__main__":
start_engines()