minim.nim
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import streams, critbits, parseopt2, strutils, os, json, sequtils, algorithm, logging import core/linedit, core/consts, core/parser, core/value, core/scope, core/interpreter, core/utils, core/zip import lib/min_lang, lib/min_num, lib/min_str, lib/min_logic, lib/min_time, lib/min_io, lib/min_sys, lib/min_crypto, lib/min_fs export parser, interpreter, utils, value, scope, min_lang const PRELUDE* = "prelude.min".slurp.strip var LOGGER* = newConsoleLogger() LOGGER.addHandler() proc getExecs(): seq[string] = var res = newSeq[string](0) let getFiles = proc(dir: string) = for c, s in walkDir(dir, true): if (c == pcFile or c == pcLinkToFile) and not res.contains(s): res.add s getFiles(getCurrentDir()) for dir in "PATH".getEnv.split(PathSep): getFiles(dir) res.sort(system.cmp) return res proc getCompletions(ed: LineEditor, symbols: seq[string]): seq[string] = var words = ed.lineText.split(" ") var word: string if words.len == 0: word = ed.lineText else: word = words[words.len-1] if word.startsWith("'"): return symbols.mapIt("'" & $it) elif word.startsWith("~"): return symbols.mapIt("~" & $it) if word.startsWith("@"): return symbols.mapIt("@" & $it) if word.startsWith(">"): return symbols.mapIt(">" & $it) if word.startsWith("*"): return symbols.mapIt("*" & $it) if word.startsWith("("): return symbols.mapIt("(" & $it) if word.startsWith("<"): return toSeq(MINIMSYMBOLS.readFile.parseJson.pairs).mapIt("<" & $it[0]) if word.startsWith("$"): return toSeq(envPairs()).mapIt("$" & $it[0]) if word.startsWith("!"): return getExecs().mapIt("!" & $it) if word.startsWith("&"): return getExecs().mapIt("&" & $it) if word.startsWith("\""): var f = word[1..^1] if f == "": f = getCurrentDir().replace("\\", "/") return toSeq(walkDir(f, true)).mapIt("\"$1" % it.path.replace("\\", "/")) elif f.dirExists: f = f.replace("\\", "/") if f[f.len-1] != '/': f = f & "/" return toSeq(walkDir(f, true)).mapIt("\"$1$2" % [f, it.path.replace("\\", "/")]) else: var dir: string if f.contains("/") or dir.contains("\\"): dir = f.parentDir let file = f.extractFileName return toSeq(walkDir(dir, true)).filterIt(it.path.toLowerAscii.startsWith(file.toLowerAscii)).mapIt("\"$1/$2" % [dir, it.path.replace("\\", "/")]) else: dir = getCurrentDir() return toSeq(walkDir(dir, true)).filterIt(it.path.toLowerAscii.startsWith(f.toLowerAscii)).mapIt("\"$1" % [it.path.replace("\\", "/")]) return symbols proc stdLib*(i: In) = if not MINIMSYMBOLS.fileExists: MINIMSYMBOLS.writeFile("{}") if not MINIMHISTORY.fileExists: MINIMHISTORY.writeFile("") if not MINIMRC.fileExists: MINIMRC.writeFile("") i.lang_module i.io_module i.logic_module i.num_module i.str_module i.sys_module i.time_module i.fs_module i.crypto_module i.eval PRELUDE, "<prelude>" i.eval MINIMRC.readFile() proc interpret*(i: In, s: Stream) = i.stdLib() i.open(s, i.filename) discard i.parser.getToken() try: i.interpret() except: discard i.close() proc minimStream(s: Stream, filename: string) = var i = newMinInterpreter() i.pwd = filename.parentDir i.interpret(s) proc minimString*(buffer: string) = minimStream(newStringStream(buffer), "input") proc minimFile*(filename: string) = var stream = newFileStream(filename, fmRead) if stream == nil: stderr.writeLine("Error - Cannot read from file: "& filename) stderr.flushFile() minimStream(stream, filename) proc minimFile*(file: File, filename="stdin") = var stream = newFileStream(stdin) if stream == nil: stderr.writeLine("Error - Cannot read from "& filename) stderr.flushFile() minimStream(stream, filename) proc printResult(i: In, res: MinValue) = if res.isNil: return if i.stack.len > 0: let n = $i.stack.len if res.isQuotation and res.qVal.len > 1: echo "{$1} -> (" % n for item in res.qVal: echo " " & $item echo " ".repeat(n.len) & " )" else: echo "{$1} -> $2" % [$i.stack.len, $i.stack[i.stack.len - 1]] proc minimRepl*(i: var MinInterpreter) = i.stdLib() var s = newStringStream("") i.open(s, "") var line: string #echo "$1 v$2" % [appname, version] var ed = initEditor(historyFile = MINIMHISTORY) while true: let symbols = toSeq(i.scope.symbols.keys) ed.completionCallback = proc(ed: LineEditor): seq[string] = return ed.getCompletions(symbols) # evaluate prompt i.apply(i.scope.getSymbol("prompt")) var v: MinValue i.reqString(v) let prompt = v.getString() line = ed.readLine(prompt) i.parser.buf = $i.parser.buf & $line i.parser.bufLen = i.parser.buf.len discard i.parser.getToken() try: i.printResult i.interpret() except: discard proc minimRepl*() = var i = newMinInterpreter() i.minimRepl when isMainModule: var REPL = false let usage* = """ $1 v$2 - a tiny concatenative shell and programming language (c) 2014-2016 Fabio Cevasco Usage: minim [options] [filename] Arguments: filename A $1 file to interpret (default: STDIN). Options: -e, --evaluate Evaluate a $1 program inline -h, --help Print this help -v, --version Print the program version -i, --interactive Start $1 shell""" % [appname, version] var file, s: string = "" setLogFilter(lvlWarn) for kind, key, val in getopt(): case kind: of cmdArgument: file = key of cmdLongOption, cmdShortOption: case key: of "log", "l": var val = val logLevel(val) of "evaluate", "e": s = val of "help", "h": echo usage quit(0) of "version", "v": echo version quit(0) of "interactive", "i": REPL = true else: discard else: discard if s != "": minimString(s) elif file != "": minimFile file elif REPL: minimRepl() quit(0) else: minimFile stdin, "stdin" |