refactor and export api

options argument added to all functions.
db path is put inside options argument.

src/cscope.coffee

@@ -1,36 +1,25 @@
-# TODO: rename methods in a consistent way
-# TODO: Gruntfile.coffee (refer to github.com/atom/node-ctags)
-# TODO: add tests
-# TODO: move all this to github issues
-
 nexpect = require 'nexpect'
 
-findSymbolCmd = "1"
-funcsCalledByCmd = "2"
-funcsCallingCmd = "3"
-# findTextStringCmd = "4" # FIXME: only same dir
-# changeTextStringCmd = "5" # TODO: do i need this at all?
-# findEgrepPatternCmd = "6" # FIXME: only same dir
-findFileCmd = "7"
-findFilesIncludingCmd = "8"
-findAssignCmd = "9"
-
-symbolToSearch = process.argv[2]
-dbPath = process.argv[3]
-if !symbolToSearch || !dbPath
-  console.log "Usage: coffee cscope.coffee <symbol> <db>"
-  process.exit 1
+cmd =
+  findSymbol: '1'
+  findCallees: '2'
+  findCallers: '3'
+  findFile: '7'
+  findIncluders: '8'
+  findAssignments: '9'
 
-genericFind = (cmd, symbol, db, callback) ->
+genericFind = (cmd, symbol, options, callback) ->
   cscopeRegex = /cscope: (\d+) lines/
   outputRegex = /([\w.\/]+)\s+([a-zA-Z_$][\w$]+|<unknown>)\s+(\d+)\s+(.+)/
   prompt = ">> "
   quitCmd = "q"
 
-  nexpect.spawn "cscope"
-    , ["-d", "-k", "-l", "-f" + db]
+  opts = ['-l', '-k', '-d']
+  opts.push '-f' + options.refFile if options.refFile
+
+  nexpect.spawn "cscope", opts
     .expect prompt
-    .sendline cmd + symbolToSearch
+    .sendline cmd + symbol
     .wait cscopeRegex
     .sendline quitCmd
     .run (err, stdout, exitcode) ->
@@ -63,43 +52,16 @@ genericFind = (cmd, symbol, db, callback) ->
           ctx:  m[4]
       callback res
 
-findSymbol = (symbol, db, callback) ->
-  genericFind findSymbolCmd, symbol, db, callback
-
-funcsCalledBy = (symbol, db, callback) ->
-  genericFind funcsCalledByCmd, symbol, db, callback
-
-funcsCalling = (symbol, db, callback) ->
-  genericFind funcsCallingCmd, symbol, db, callback
-
-# findTextString = (symbol, db, callback) ->
-#   genericFind findTextStringCmd, symbol, db, callback
-
-# changeTextString = (symbol, db, callback) ->
-#   genericFind changeTextStringCmd, symbol, db, callback
-
-# findEgrepPattern = (symbol, db, callback) ->
-#   genericFind findEgrepPatternCmd, symbol, db, callback
-
-findFile = (symbol, db, callback) ->
-  genericFind findFileCmd, symbol, db, callback
-
-findFilesIncluding = (symbol, db, callback) ->
-  genericFind findFilesIncludingCmd, symbol, db, callback
-
-findAssign = (symbol, db, callback) ->
-  genericFind findAssignCmd, symbol, db, callback
-
-printResult = (results) ->
-  for r in results
-    console.log "file: #{r.file}, sym: #{r.sym}, line: #{r.line}"
-
-# findSymbol symbolToSearch, dbPath, printResult
-funcsCalledBy symbolToSearch, dbPath, printResult
-# funcsCalling symbolToSearch, dbPath, printResult
-# findTextString symbolToSearch, dbPath, printResult
-# changeTextString symbolToSearch, dbPath, printResult
-# findEgrepPattern symbolToSearch, dbPath, printResult
-# findFile symbolToSearch, dbPath, printResult
-# findFilesIncluding symbolToSearch, dbPath, printResult
-# findAssign symbolToSearch, dbPath, printResult
+module.exports =
+  findSymbol: (symbol, options, callback) ->
+    genericFind cmd.findSymbolCmd, symbol, options, callback
+  findCallees: (symbol, options, callback) ->
+    genericFind cmd.findCallees, symbol, options, callback
+  findCallers: (symbol, options, callback) ->
+    genericFind cmd.findCallers, symbol, options, callback
+  findFile: (symbol, options, callback) ->
+    genericFind cmd.findFile, symbol, options, callback
+  findIncluders: (symbol, options, callback) ->
+    genericFind cmd.findIncluders, symbol, options, callback
+  findAssignments: (symbol, options, callback) ->
+    genericFind cmd.findAssignments, symbol, options, callback