minpkg/core/mmm.nim
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import std/[json, os, httpclient, strutils, sequtils, logging ] import env type MinModuleManager* = object registry: string modules = %[] globalDir: string localDir: string MMMError = ref object of CatchableError proc raiseError(msg: string) = raise MMMError(msg: msg) proc setup*(MMM: var MinModuleManager, check = true) = MMM.registry = MMMREGISTRY MMM.globalDir = HOME / "mmm" MMM.localDir = getCurrentDir() / "mmm" var updatedLocal = 0 let mmmJson = MMM.globalDir / "mmm.json" if not dirExists(MMM.globalDir): createDir(MMM.globalDir) if not dirExists(MMM.localDir): createDir(MMM.localDir) if fileExists(mmmJson): try: let data = parseFile(mmmJson) updatedLocal = data["updated"].getInt MMM.modules = data["modules"] except CatchableError: debug getCurrentExceptionMsg() raiseError "Invalid local registry data ($#)" % [mmmJson] if check: let client = newHttpClient() # Check remote data var updatedRemote = 0 try: debug "Checking remote registry" updatedRemote = client.getContent(MMMREGISTRY & "/mmm.timestamp").parseInt debug "Remote registry timestamp retrieved." except CatchableError: debug getCurrentExceptionMsg() warn "Unable to connect to remote registry ($#)" % [MMMREGISTRY] if updatedRemote > updatedLocal: notice "Updating local module registry" try: client.downloadFile(MMMREGISTRY & "/mmm.json", mmmJson) except CatchableError: warn "Unable to download remote registry data ($#)" % [MMMREGISTRY & "/mmm.json"] debug getCurrentExceptionMsg() try: let data = parseFile(mmmJson) MMM.modules = data["modules"] except CatchableError: debug getCurrentExceptionMsg() raiseError "Invalid local registry data ($#)" % [mmmJson] else: debug "Local registry up-to-date: $#" % [$updatedLocal] proc init*(MMM: var MinModuleManager) = let pwd = getCurrentDir() if dirExists(pwd / "mmm.json"): raiseError "The current directory already contains a managed module (mmm.json already exists)" debug "Creating mmm.json file" let json = """ { "name": "$#", "method": "git", "url": "TBD", "author": "TBD", "description": "TBD", "license": "MIT", "deps": {} } """ % [pwd.lastPathPart] writeFile(pwd / "mmm.json", json) if not dirExists(pwd / "mmm"): debug "Creating mmm directory" createDir(pwd / "mmm") proc remove*(MMM: var MinModuleManager, name, version: string, global = false) = var dir: string var versionLabel = version if version == "": versionLabel = "<all-versions>" if global: dir = MMM.globalDir / name else: dir = MMM.localDir / name else: if global: dir = MMM.globalDir / name / version else: dir = MMM.localDir / name / version if not dir.dirExists(): raiseError "Module '$#' (version: $#) is not installed." % [name, versionLabel] notice "Removing module $#@$#..." % [name, versionLabel] try: dir.removeDir() if version != "" and dir.parentDir().walkDir().toSeq().len == 0: # Remove parent directory if no versions are installed dir.parentDir().removeDir() except CatchableError: debug getCurrentExceptionMsg() raiseError "Unable to remove module $#@$#" % [name, versionLabel] notice "Removal complete." proc install*(MMM: var MinModuleManager, name, version: string, global = false) = var dir: string if global: dir = MMM.globalDir / name / version else: dir = MMM.localDir / name / version if dir.dirExists(): raiseError "Module '$#' (version: $#) is already installed." % [name, version] dir.createDir() let results = MMM.modules.filterIt(it.hasKey("name") and it["name"] == %name) if results.len == 0: raiseError "Unknown module '$#'." % [name] let data = results[0] if not data.hasKey("method"): raiseError "Installation method not specified for module '$#'" % [name] let meth = data["method"].getStr if meth != "git": raiseError "Unable to install module '$#': Installation method '$#' is not supported" % [name, meth] if not data.hasKey("url"): raiseError "URL not specified for module '$#'" % [name] let url = data["url"].getStr let cmd = "git clone $# -b $# --depth 1 \"$#\"" % [url, version, dir.replace("\\", "/")] debug cmd notice "Installing module $#@$#..." % [name, version] if not data.hasKey("deps"): raiseError "Dependencies not specified for module '$#'" % [name] var result = execShellCmd(cmd) if (result == 0): # Go to directory and install dependencies let originalDir = getCurrentDir() dir.setCurrentDir() MMM.setup(false) if data["deps"].pairs.toSeq().len > 0: notice "Installing dependencies..." for depName, depVersion in data["deps"].pairs: try: MMM.install depName, depVersion.getStr, global except CatchableError: warn getCurrentExceptionMsg() originalDir.setCurrentDir() result = 1 break if result != 0: # Rollback warn "Installation failed - Rolling back..." try: MMM.setup(false) MMM.remove(name, version, global) notice "Rollback completed." except: debug getCurrentExceptionMsg() warn "Rollback failed." finally: raiseError "Installation failed." |