github.com/goplus/gossa@v0.3.25/cmd/gossa/main.go (about)

     1  /*
     2   Copyright 2021 The GoPlus Authors (goplus.org)
     3  
     4   Licensed under the Apache License, Version 2.0 (the "License");
     5   you may not use this file except in compliance with the License.
     6   You may obtain a copy of the License at
     7  
     8       http://www.apache.org/licenses/LICENSE-2.0
     9  
    10   Unless required by applicable law or agreed to in writing, software
    11   distributed under the License is distributed on an "AS IS" BASIS,
    12   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   See the License for the specific language governing permissions and
    14   limitations under the License.
    15  */
    16  
    17  package main
    18  
    19  import (
    20  	"flag"
    21  	"fmt"
    22  	"os"
    23  	"strings"
    24  
    25  	"github.com/goplus/gossa/cmd/internal/base"
    26  	"github.com/goplus/gossa/cmd/internal/help"
    27  	"github.com/goplus/gossa/cmd/internal/repl"
    28  	"github.com/goplus/gossa/cmd/internal/run"
    29  	"github.com/goplus/gossa/cmd/internal/test"
    30  
    31  	_ "github.com/goplus/gossa/pkg"
    32  	_ "github.com/goplus/reflectx/icall/icall8192"
    33  )
    34  
    35  func mainUsage() {
    36  	help.PrintUsage(os.Stderr, base.Gossa)
    37  	os.Exit(2)
    38  }
    39  
    40  func init() {
    41  	base.Usage = mainUsage
    42  	base.Gossa.Commands = []*base.Command{
    43  		run.Cmd,
    44  		test.Cmd,
    45  		repl.Cmd,
    46  	}
    47  }
    48  
    49  func main() {
    50  	flag.Parse()
    51  	args := flag.Args()
    52  	if len(args) < 1 {
    53  		//base.Usage()
    54  		args = []string{"repl"}
    55  	}
    56  
    57  	base.CmdName = args[0] // for error messages
    58  	if args[0] == "help" {
    59  		help.Help(os.Stderr, args[1:])
    60  		return
    61  	}
    62  
    63  BigCmdLoop:
    64  	for bigCmd := base.Gossa; ; {
    65  		for _, cmd := range bigCmd.Commands {
    66  			if cmd.Name() != args[0] {
    67  				continue
    68  			}
    69  			args = args[1:]
    70  			if len(cmd.Commands) > 0 {
    71  				bigCmd = cmd
    72  				if len(args) == 0 {
    73  					help.PrintUsage(os.Stderr, bigCmd)
    74  					os.Exit(2)
    75  				}
    76  				if args[0] == "help" {
    77  					help.Help(os.Stderr, append(strings.Split(base.CmdName, " "), args[1:]...))
    78  					return
    79  				}
    80  				base.CmdName += " " + args[0]
    81  				continue BigCmdLoop
    82  			}
    83  			if !cmd.Runnable() {
    84  				continue
    85  			}
    86  			cmd.Run(cmd, args)
    87  			return
    88  		}
    89  		helpArg := ""
    90  		if i := strings.LastIndex(base.CmdName, " "); i >= 0 {
    91  			helpArg = " " + base.CmdName[:i]
    92  		}
    93  		fmt.Fprintf(os.Stderr, "gossa %s: unknown command\nRun 'gossa help%s' for usage.\n", base.CmdName, helpArg)
    94  		os.Exit(2)
    95  	}
    96  }