|
| 1 | +package v3 |
| 2 | + |
| 3 | +import ( |
| 4 | + "bytes" |
| 5 | + "context" |
| 6 | + "fmt" |
| 7 | + "strings" |
| 8 | + "sync" |
| 9 | + |
| 10 | + "github.com/go-task/task/v2/internal/compiler" |
| 11 | + "github.com/go-task/task/v2/internal/execext" |
| 12 | + "github.com/go-task/task/v2/internal/logger" |
| 13 | + "github.com/go-task/task/v2/internal/taskfile" |
| 14 | + "github.com/go-task/task/v2/internal/templater" |
| 15 | +) |
| 16 | + |
| 17 | +var _ compiler.Compiler = &CompilerV3{} |
| 18 | + |
| 19 | +type CompilerV3 struct { |
| 20 | + Dir string |
| 21 | + |
| 22 | + TaskfileVars *taskfile.Vars |
| 23 | + |
| 24 | + Logger *logger.Logger |
| 25 | + |
| 26 | + dynamicCache map[string]string |
| 27 | + muDynamicCache sync.Mutex |
| 28 | +} |
| 29 | + |
| 30 | +func (c *CompilerV3) GetVariables(t *taskfile.Task, call taskfile.Call) (*taskfile.Vars, error) { |
| 31 | + result := compiler.GetEnviron() |
| 32 | + result.Set("TASK", taskfile.Var{Static: t.Task}) |
| 33 | + |
| 34 | + rangeFunc := func(k string, v taskfile.Var) error { |
| 35 | + tr := templater.Templater{Vars: result, RemoveNoValue: true} |
| 36 | + v = taskfile.Var{ |
| 37 | + Static: tr.Replace(v.Static), |
| 38 | + Sh: tr.Replace(v.Sh), |
| 39 | + } |
| 40 | + if err := tr.Err(); err != nil { |
| 41 | + return err |
| 42 | + } |
| 43 | + static, err := c.HandleDynamicVar(v) |
| 44 | + if err != nil { |
| 45 | + return err |
| 46 | + } |
| 47 | + result.Set(k, taskfile.Var{Static: static}) |
| 48 | + return nil |
| 49 | + } |
| 50 | + |
| 51 | + if err := c.TaskfileVars.Range(rangeFunc); err != nil { |
| 52 | + return nil, err |
| 53 | + } |
| 54 | + if err := call.Vars.Range(rangeFunc); err != nil { |
| 55 | + return nil, err |
| 56 | + } |
| 57 | + if err := t.Vars.Range(rangeFunc); err != nil { |
| 58 | + return nil, err |
| 59 | + } |
| 60 | + |
| 61 | + return result, nil |
| 62 | +} |
| 63 | + |
| 64 | +func (c *CompilerV3) HandleDynamicVar(v taskfile.Var) (string, error) { |
| 65 | + if v.Static != "" || v.Sh == "" { |
| 66 | + return v.Static, nil |
| 67 | + } |
| 68 | + |
| 69 | + c.muDynamicCache.Lock() |
| 70 | + defer c.muDynamicCache.Unlock() |
| 71 | + |
| 72 | + if c.dynamicCache == nil { |
| 73 | + c.dynamicCache = make(map[string]string, 30) |
| 74 | + } |
| 75 | + if result, ok := c.dynamicCache[v.Sh]; ok { |
| 76 | + return result, nil |
| 77 | + } |
| 78 | + |
| 79 | + var stdout bytes.Buffer |
| 80 | + opts := &execext.RunCommandOptions{ |
| 81 | + Command: v.Sh, |
| 82 | + Dir: c.Dir, |
| 83 | + Stdout: &stdout, |
| 84 | + Stderr: c.Logger.Stderr, |
| 85 | + } |
| 86 | + if err := execext.RunCommand(context.Background(), opts); err != nil { |
| 87 | + return "", fmt.Errorf(`task: Command "%s" in taskvars file failed: %s`, opts.Command, err) |
| 88 | + } |
| 89 | + |
| 90 | + // Trim a single trailing newline from the result to make most command |
| 91 | + // output easier to use in shell commands. |
| 92 | + result := strings.TrimSuffix(stdout.String(), "\n") |
| 93 | + |
| 94 | + c.dynamicCache[v.Sh] = result |
| 95 | + c.Logger.VerboseErrf(logger.Magenta, `task: dynamic variable: '%s' result: '%s'`, v.Sh, result) |
| 96 | + |
| 97 | + return result, nil |
| 98 | +} |
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