/// Look for a file from which to parse configuration (nut.yml in current
/// directory). Parse the file, and returns an updated context (root directory)
/// TODO: look for nut.yml file in parent folders
func FindProject(context Utils.Context) (Project, Utils.Context, error) {
// var parentProject Project
var project Project
var err error
var newContext Utils.Context
var store Persist.Store
foundDirectory := context.GetUserDirectory()
// fullpath := filepath.Join(foundDirectory, NutFileName)
fullpath := filepath.Join(foundDirectory, NutOverrideFileName)
previousFoundDirectory := ""
var exists bool
searchHigher := true
found := false
for searchHigher == true {
if exists, err = Utils.FileExists(fullpath); exists && err == nil {
found = true
searchHigher = false
} else {
fullpath = filepath.Join(foundDirectory, NutFileName)
if exists, err = Utils.FileExists(fullpath); exists && err == nil {
found = true
searchHigher = false
} else {
previousFoundDirectory = foundDirectory
foundDirectory = filepath.Dir(foundDirectory)
// fullpath = filepath.Join(foundDirectory, NutFileName)
fullpath = filepath.Join(foundDirectory, NutOverrideFileName)
if foundDirectory == previousFoundDirectory {
searchHigher = false
}
}
}
}
if found {
if project, err = LoadProjectFromFile(fullpath); err == nil {
log.Debug("Parsed from file: ", fullpath)
if newContext, err = Utils.NewContext(foundDirectory, context.GetUserDirectory()); err == nil {
log.Debug("Context updated: ", newContext)
if store, err = Persist.InitStore(newContext.GetRootDirectory()); err == nil {
log.Debug("Store initialized: ", store)
if err = ResolveDependencies(project, store, fullpath); err == nil {
log.Debug("Resolved dependencies from file: ", fullpath)
return project, newContext, err
}
}
}
}
} else {
err = errors.New("Could not find '" + NutFileName + "', neither in current directory nor in its parents.")
}
return nil, nil, err
}
func main() {
log.SetLevel(log.ErrorLevel)
// log.SetLevel(log.DebugLevel)
// get the folder where nut has been called
pwd, err := os.Getwd()
if err != nil {
log.Fatal("find path error: ", err)
}
context, err := Utils.NewContext(pwd, pwd)
if err != nil {
log.Fatal("Error with context: ", err)
}
log.Debug("main first context: ", context)
// try to parse the folder's configuration to add macros
var macros []cli.Command
project, projectContext, err := Config.FindProject(context)
log.Debug("main second context: ", projectContext)
projectMacros := map[string]Config.Macro{}
if err == nil {
// Macros are stored in a random order.
// But we want to display them in the same order everytime.
// So sort the names of the macros.
projectMacros = Config.GetMacros(project)
macroNamesOrdered := make([]string, 0, len(projectMacros))
for key, _ := range projectMacros {
macroNamesOrdered = append(macroNamesOrdered, key)
}
sort.Strings(macroNamesOrdered)
macros = make([]cli.Command, len(projectMacros))
log.Debug(len(macroNamesOrdered), " macros")
for index, name := range macroNamesOrdered {
macro := projectMacros[name]
log.Debug("macro ", name, ": ", macro)
// If the nut file containes a macro which has not any field defined,
// then the macro will be nil.
// So check value of macro:
if macro == reflect.Zero(reflect.TypeOf(macro)).Interface() { // just check whether it macro is nil
// it seems uselessly complicated, but:
// if macro == nil { // doesn't work the trivial way one could expect
// if macro.(*MacroBase) == nil { // panic: interface conversion: main.Macro is *main.MacroV3, not *main.MacroBase
// Checking for nil doesn't seems like a good solution. TODO: ? require at least a "usage" field for each macro in the nut file?
log.Warn("Undefined properties of macro " + name + ".")
} else {
nameClosure := name
usage := "macro: "
if macroUsage := Config.GetUsage(macro); macroUsage == "" {
usage += "undefined usage. define one with 'usage' property for this macro."
} else {
usage += macroUsage
}
macros[index] = cli.Command{
Name: nameClosure,
Usage: usage,
Aliases: Config.GetAliases(macro),
UsageText: Config.GetUsageText(macro),
Description: Config.GetDescription(macro),
Action: func(c *cli.Context) {
execMacro(macro, projectContext, false)
},
}
}
}
} else {
log.Error("Could not parse configuration: " + err.Error())
macros = []cli.Command{}
}
initFlag := false
logsFlag := false
cleanFlag := false
execFlag := ""
inheriteConfigMacroFlag := ""
gitHubFlag := ""
macroFlag := ""
useDockerCLIFlag := DOCKERCLI_FLAG_DEFAULT_VALUE
app := cli.NewApp()
app.Name = "nut"
app.Version = "0.1.3 dev"
app.Usage = "the development environment, containerized"
// app.EnableBashCompletion = true
app.Flags = []cli.Flag{
cli.BoolFlag{
Name: "clean",
Usage: "clean all data stored in .nut",
Destination: &cleanFlag,
},
cli.BoolFlag{
Name: "init",
Usage: "initialize a nut project",
Destination: &initFlag,
},
cli.StringFlag{
Name: "github",
Usage: "Use with --init: provide a GitHub repository to initialize Nut.",
Destination: &gitHubFlag,
},
cli.BoolFlag{
Name: "logs",
Usage: "Use with --exec: display log messages. Useful for contributors and to report an issue",
Destination: &logsFlag,
},
cli.StringFlag{
Name: "exec",
Usage: "execute a command in a container.",
Destination: &execFlag,
},
cli.StringFlag{
Name: "macro",
Usage: "Name of the macro to execute. Use with --logs.",
Destination: ¯oFlag,
},
cli.StringFlag{
Name: "extend-macro",
Usage: "Use with --exec: name of the macro from which to inherite the configuration",
Destination: &inheriteConfigMacroFlag,
},
}
if DOCKERCLI_FLAG_DEFAULT_VALUE == false {
app.Flags = append(app.Flags, cli.BoolFlag{
Name: "dockercli",
Usage: "Use Docker CLI, instead of using Docker API to reach the host directly.",
Destination: &useDockerCLIFlag,
})
} else {
app.Flags = append(app.Flags, cli.BoolFlag{
Name: "dockerapi",
Usage: "Use Docker API to reach the host directly, instead of using Docker CLI.",
Destination: &useDockerCLIFlag,
})
}
defaultAction := app.Action
app.Action = func(c *cli.Context) {
if logsFlag {
log.SetLevel(log.DebugLevel)
}
if cleanFlag {
if project != nil {
persist.CleanStoreFromProject(projectContext.GetRootDirectory())
}
} else if initFlag {
log.Debug("main context for init: ", context)
initSubcommand(c, context, gitHubFlag)
// return
} else if execFlag != "" {
if project != nil {
if inheriteConfigMacroFlag == "" {
execInContainer([]string{execFlag}, project, projectContext, useDockerCLIFlag != DOCKERCLI_FLAG_DEFAULT_VALUE)
} else if macro, ok := projectMacros[inheriteConfigMacroFlag]; ok && project != nil {
execInContainer([]string{execFlag}, macro, projectContext, useDockerCLIFlag != DOCKERCLI_FLAG_DEFAULT_VALUE)
} else {
log.Error("Undefined macro " + macroFlag)
defaultAction(c)
}
} else {
log.Error("Could not find nut configuration.")
defaultAction(c)
}
// return
} else if macroFlag != "" {
if macro, ok := projectMacros[macroFlag]; ok && project != nil {
execMacro(macro, projectContext, useDockerCLIFlag != DOCKERCLI_FLAG_DEFAULT_VALUE)
} else {
log.Error("Undefined macro " + macroFlag)
defaultAction(c)
}
} else {
defaultAction(c)
}
}
app.Commands = macros
app.Run(os.Args)
}