func targetAmendCmd()

in newt/cli/target_cmds.go [409:483]
62 lines of code
19 McCabe index (conditional complexity)

func targetAmendCmd(cmd *cobra.Command, args []string) {
	if len(args) < 2 {
		NewtUsage(cmd,
			util.NewNewtError("Must specify at least two arguments "+
				"(target-name & variable=value) to append"))
	}

	TryGetProject()

	// Parse target name.
	t, err := resolveExistingTargetArg(args[0])
	if err != nil {
		NewtUsage(cmd, err)
	}

	// Parse series of k=v pairs.  If an argument doesn't contain a '='
	// character, display the valid values for the variable and quit.
	vars := [][]string{}
	for i := 1; i < len(args); i++ {
		kv := strings.SplitN(args[i], "=", 2)
		// Check that the variable can have values appended.
		valid := false
		for _, v := range amendVars {
			if kv[0] == v {
				valid = true
				break
			}
		}
		if !valid {
			NewtUsage(cmd,
				util.NewNewtError("Cannot amend values for "+kv[0]))
		}

		if len(kv) == 1 {
			// User entered a variable name without a '='
			NewtUsage(cmd, nil)
		}
		kv[1] = strings.TrimSpace(kv[1])
		if kv[1] == "" {
			NewtUsage(cmd,
				util.NewNewtError("Must provide a value to"+
					" append for variable "+kv[0]))

		}
		// Trim trailing slash from value.  This is necessary when tab
		// completion is used to fill in the value.
		kv[1] = strings.TrimSuffix(kv[1], "/")
		vars = append(vars, kv)
	}
	for _, kv := range vars {
		if kv[0] == "syscfg" {
			err = amendSysCfg(kv[1], t)
			if err != nil {
				NewtUsage(cmd, err)
			}
		} else if kv[0] == "cflags" ||
			kv[0] == "cxxflags" ||
			kv[0] == "lflags" ||
			kv[0] == "aflags" {
			err = amendBuildFlags(kv, t)
			if err != nil {
				NewtUsage(cmd, err)
			}
		}
	}
	if err := t.Save(); err != nil {
		NewtUsage(cmd, err)
	}

	for _, kv := range vars {
		util.StatusMessage(util.VERBOSITY_DEFAULT,
			"Amended %s for Target %s successfully\n",
			kv[0], t.FullName())
	}
}