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ff.nim
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ff.nim
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import commandeer, os, osproc, parsecfg, streams, strscans, strutils, tables
const
VERSION {.strdefine.} = ""
DOC = """
ff $#
Windows wrapper for fzf
Usage:
ff [options] [<short1>] [<short2>]
Options:
-d <dir> Directory to index or shortcut from config file
-s <select> Content to populate the fzf menu
file, dir or *.xyz shortcuts
or command to execute
-a <action> Action to execute or shortcut from config file
-q <query> Prefill query for fzf
-c <config> Configuration file
-h This help menu
Shortcut arguments:
short1 dir shortcut if matches
action shortcut if matches
dir if directory exists
else action
short1 short2 short1 = dir shortcut or dir if exists
short2 = action shortcut or action
Explicit -d or -a will override any shortcut arguments
""" % VERSION
proc parseConfig(help=false): string
commandline:
arguments(SHORTCUT, string, false)
option(DIR, string, "dir", "d", getCurrentDir())
option(SELECT, string, "select", "s", "")
option(ACTION, string, "action", "a", "{}")
option(QUERY, string, "query", "q", "")
option(CONFIGFILE, string, "config", "c", getAppDir()/"ff.cfg")
option(TEST, bool, "test", "t", false)
exitoption("help", "h", parseConfig(true))
var CONFIG: Config
proc fzf() =
var act = ACTION
if not ("{}" in ACTION):
act &= " {}"
var args = @["--bind", "enter:execute(start \"\" /I $#)+abort" % act]
if QUERY != "":
args.add("--query")
args.add(QUERY)
if not TEST:
var
line: string
pin: Process # FZF
pout: Process # SELECT
sin: Stream
sout: Stream
if SELECT.len() != 0:
pin = startProcess("fzf", DIR, args, options={poUsePath})
sin = pin.inputStream()
pout = startProcess(SELECT, DIR, options={poUsePath, poEvalCommand, poStdErrToStdOut})
sout = pout.outputStream()
try:
while true:
if pout.running():
line = sout.readLine()
else:
break
if pin.running():
sin.writeLine(line)
else:
break
except IOError, OSError:
discard
sout.close()
sin.close()
if pout.running():
pout.kill()
discard pout.waitForExit()
else:
pin = startProcess("fzf", DIR, args, options={poUsePath, poParentStreams})
discard pin.waitForExit()
else:
stdout.write DIR & " : "
for arg in args:
stdout.write arg & " : "
echo SELECT.replace("cmd /c ", "")
proc replaceEnv(str: var string): string =
var env: string
while "$" in str:
let pos = str.find("$")
if str[pos..<str.len].scanf("$$$w", env):
if existsEnv(env):
str = str.replace("$" & env, getEnv(env))
else:
echo "Missing environment variable: $" & env
quit(1)
return str.replace("/", $DirSep).replace("\\", $DirSep)
proc dirFind(dir: string, fail = false): string =
var dirout = dir
# Expand directory shortcut
if CONFIG.hasKey("directories") and CONFIG["directories"].hasKey(dirout):
dirout = CONFIG["directories"][dirout].replaceEnv()
if not dirExists(dirout):
if fail:
echo "Directory doesn't exist: " & dirout
quit(1)
return ""
return dirout
proc actionFind(action, select: string): tuple[actionout, selectout: string] =
var actionout = action
var selectout = select
# Expand action shortcut
if CONFIG.hasKey("actions") and CONFIG["actions"].hasKey(actionout & ".action"):
if selectout == "" and CONFIG["actions"].hasKey(actionout & ".select"):
selectout = CONFIG["actions"][actionout & ".select"]
actionout = CONFIG["actions"][actionout & ".action"]
# Expand SELECT shortcuts
if selectout != "":
if selectout == "file":
selectout = "cmd /c dir /s/b/a-d"
elif selectout == "dir":
selectout = "cmd /c dir /s/b/ad"
elif selectout.find("*") != -1 and selectout.find(" ") == -1:
selectout = "cmd /c dir /s/b " & selectout
return (actionout, selectout)
proc parseConfig(help=false): string =
# Load config file
if fileExists(CONFIGFILE):
CONFIG = loadConfig(CONFIGFILE)
else:
CONFIG = newConfig()
# List configuration if help
if help or len(SHORTCUT) > 2:
var helpout = DOC
if fileExists(CONFIGFILE):
helpout &= "Configuration file: \n " & CONFIGFILE & "\n\n"
if CONFIG.hasKey("directories"):
helpout &= "Directory shortcuts:\n"
for i in CONFIG["directories"].keys():
helpout &= " " & i & " = " & CONFIG["directories"][i].replaceEnv() & "\n"
helpout &= "\n"
if CONFIG.hasKey("actions"):
helpout &= "Action shortcuts:"
for i in CONFIG["actions"].keys():
var nv = i.split(".")
if len(nv) != 2:
echo "Bad configuration key: " & i
quit(1)
if nv[1] == "name":
helpout &= "\n " & nv[0] & " = " & CONFIG["actions"][i]
elif nv[1] == "select":
helpout &= "\n Select: " & CONFIG["actions"][i]
elif nv[1] == "action":
helpout &= "\n Action: " & CONFIG["actions"][i]
if not ("{}" in CONFIG["actions"][i]):
helpout &= " {}"
return helpout
# Expand -d and -a
DIR = dirFind(DIR, true)
(ACTION, SELECT) = actionFind(ACTION, SELECT)
# Analyze shortcuts
var short1 = ""
var short2 = ""
if len(SHORTCUT) > 0:
short1 = SHORTCUT[0]
if len(SHORTCUT) > 1:
short2 = SHORTCUT[1]
if short1 != "":
# short1 has to be directory or dir shortcut
if short2 != "":
# Expand dir if -d not specified
if DIR == getCurrentDir():
DIR = dirFind(short1, true)
# Expand action if -a not specified
if ACTION == "{}":
(ACTION, SELECT) = actionFind(short2, SELECT)
else:
# Could be directory
# Expand dir if -d not specified
if DIR == getCurrentDir():
var d = dirFind(short1)
# Didn't work, maybe action if -a not specified
if d == "" and ACTION == "{}":
(ACTION, SELECT) = actionFind(short1, SELECT)
else:
DIR = d
else:
# -d specified, so must be action if -a not specified
if ACTION == "{}":
(ACTION, SELECT) = actionFind(short1, SELECT)
return ""
var helpout = parseConfig()
if helpout != "":
echo helpout
else:
fzf()