112 lines
2.1 KiB
Go
112 lines
2.1 KiB
Go
package wand
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import (
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"errors"
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"fmt"
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"io"
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"os"
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"path/filepath"
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"strconv"
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)
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func exec(stdin io.Reader, stdout, stderr io.Writer, exit func(int), cmd Cmd, conf Config, env, args []string) {
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_, cmd.name = filepath.Split(args[0])
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if err := validateCommand(cmd, conf); err != nil {
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fmt.Fprintf(stderr, "program error: %v\n", err)
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exit(1)
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return
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}
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if os.Getenv("_wandgenerate") == "man" {
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if err := generateMan(stdout, cmd, conf); err != nil {
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fmt.Fprintln(stderr, err)
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exit(1)
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}
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return
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}
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if os.Getenv("_wandgenerate") == "markdown" {
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level, _ := strconv.Atoi(os.Getenv("_wandmarkdownlevel"))
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if err := generateMarkdown(stdout, cmd, conf, level); err != nil {
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fmt.Fprintln(stderr, err)
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exit(1)
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}
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return
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}
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cmd = insertHelp(cmd)
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// will need root command for the config and the env:
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rootCmd := cmd
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cmd, fullCmd, args := selectCommand(cmd, args[1:])
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if cmd.helpFor != nil {
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if err := showHelp(stdout, cmd, conf, fullCmd); err != nil {
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fmt.Fprintln(stderr, err)
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exit(1)
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}
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return
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}
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if cmd.version != "" {
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if err := showVersion(stdout, cmd); err != nil {
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fmt.Fprintln(stderr, err)
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exit(1)
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}
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return
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}
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var bo []string
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if cmd.impl != nil {
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bo = boolOptions(cmd)
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}
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cl := readArgs(bo, args)
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if hasHelpOption(cmd, cl.options) {
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if err := showHelp(stdout, cmd, conf, fullCmd); err != nil {
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fmt.Fprintln(stderr, err)
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exit(1)
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}
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return
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}
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if cmd.impl == nil {
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fmt.Fprintln(stderr, errors.New("subcommand not specified"))
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suggestHelp(stderr, cmd, fullCmd)
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exit(1)
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return
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}
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c, err := readConfig(rootCmd, cl, conf)
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if err != nil {
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fmt.Fprintf(stderr, "configuration error: %v", err)
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exit(1)
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return
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}
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e := readEnv(rootCmd.name, env)
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if err := validateInput(cmd, conf, c, e, cl); err != nil {
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fmt.Fprintln(stderr, err)
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suggestHelp(stderr, cmd, fullCmd)
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exit(1)
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return
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}
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output, err := apply(stdin, stdout, cmd, c, e, cl)
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if err != nil {
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fmt.Fprintln(stderr, err)
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exit(1)
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return
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}
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if err := printOutput(stdout, output); err != nil {
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fmt.Fprintln(stderr, err)
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exit(1)
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return
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}
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}
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