]> ruderich.org/simon Gitweb - safcm/safcm.git/blobdiff - frontend/changes.go
safcm: move sync_changes.go and term.go to frontend package
[safcm/safcm.git] / frontend / changes.go
similarity index 76%
rename from cmd/safcm/sync_changes.go
rename to frontend/changes.go
index 2650bb46062b33ab0f86e75d9b0f0cb1643bf556..351cdfac181a7a054350584453d5133e3606b371 100644 (file)
@@ -1,4 +1,4 @@
-// "sync" sub-command: format changes
+// Frontend: Format changes
 
 // Copyright (C) 2021  Simon Ruderich
 //
@@ -15,7 +15,7 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-package main
+package frontend
 
 import (
        "fmt"
@@ -30,23 +30,29 @@ import (
 // the remote helper is untrusted and must be either escaped with %q or by
 // calling EscapeControlCharacters().
 
-func (s *Sync) formatChanges(resp safcm.MsgSyncResp) string {
+type Changes struct {
+       DryRun bool
+       Quiet  bool
+       IsTTY  bool
+}
+
+func (c *Changes) FormatChanges(resp safcm.MsgSyncResp) string {
        var changes []string
        if len(resp.FileChanges) > 0 {
                changes = append(changes,
-                       s.formatFileChanges(resp.FileChanges))
+                       c.FormatFileChanges(resp.FileChanges))
        }
        if len(resp.PackageChanges) > 0 {
                changes = append(changes,
-                       s.formatPackageChanges(resp.PackageChanges))
+                       c.FormatPackageChanges(resp.PackageChanges))
        }
        if len(resp.ServiceChanges) > 0 {
                changes = append(changes,
-                       s.formatServiceChanges(resp.ServiceChanges))
+                       c.FormatServiceChanges(resp.ServiceChanges))
        }
        if len(resp.CommandChanges) > 0 {
                changes = append(changes,
-                       s.formatCommandChanges(resp.CommandChanges))
+                       c.FormatCommandChanges(resp.CommandChanges))
        }
        if len(changes) == 0 {
                // Notify user that the host was synced successfully
@@ -64,30 +70,30 @@ func (s *Sync) formatChanges(resp safcm.MsgSyncResp) string {
        return "\n" + x
 }
 
-func (s *Sync) formatFileChanges(changes []safcm.FileChange) string {
+func (c *Changes) FormatFileChanges(changes []safcm.FileChange) string {
        var buf strings.Builder
-       if s.config.DryRun {
+       if c.DryRun {
                fmt.Fprintf(&buf, "will change %d file(s): (dry-run)\n",
                        len(changes))
        } else {
                fmt.Fprintf(&buf, "changed %d file(s):\n", len(changes))
        }
        for _, x := range changes {
-               fmt.Fprintf(&buf, "%s:", s.formatTarget(x.Path))
+               fmt.Fprintf(&buf, "%s:", c.FormatTarget(x.Path))
 
                var info []string
                if x.Created {
                        info = append(info,
-                               ColorString(s.isTTY, ColorGreen, "created"),
-                               formatFileType(x.New),
-                               formatFileUserGroup(x.New),
-                               formatFilePerm(x.New),
+                               ColorString(c.IsTTY, ColorGreen, "created"),
+                               FormatFileType(x.New),
+                               FormatFileUserGroup(x.New),
+                               FormatFilePerm(x.New),
                        )
                } else {
                        if x.Old.Mode.Type() != x.New.Mode.Type() {
                                info = append(info, fmt.Sprintf("%s -> %s",
-                                       formatFileType(x.Old),
-                                       formatFileType(x.New),
+                                       FormatFileType(x.Old),
+                                       FormatFileType(x.New),
                                ))
                        }
                        if x.Old.User != x.New.User ||
@@ -95,15 +101,15 @@ func (s *Sync) formatFileChanges(changes []safcm.FileChange) string {
                                x.Old.Group != x.New.Group ||
                                x.Old.Gid != x.New.Gid {
                                info = append(info, fmt.Sprintf("%s -> %s",
-                                       formatFileUserGroup(x.Old),
-                                       formatFileUserGroup(x.New),
+                                       FormatFileUserGroup(x.Old),
+                                       FormatFileUserGroup(x.New),
                                ))
                        }
                        if config.FileModeToFullPerm(x.Old.Mode) !=
                                config.FileModeToFullPerm(x.New.Mode) {
                                info = append(info, fmt.Sprintf("%s -> %s",
-                                       formatFilePerm(x.Old),
-                                       formatFilePerm(x.New),
+                                       FormatFilePerm(x.Old),
+                                       FormatFilePerm(x.New),
                                ))
                        }
                }
@@ -113,13 +119,14 @@ func (s *Sync) formatFileChanges(changes []safcm.FileChange) string {
                }
 
                if x.DataDiff != "" {
-                       fmt.Fprintf(&buf, "\n%s", s.formatDiff(x.DataDiff))
+                       fmt.Fprintf(&buf, "\n%s", c.FormatDiff(x.DataDiff))
                }
                fmt.Fprintf(&buf, "\n")
        }
        return buf.String()
 }
-func formatFileType(info safcm.FileChangeInfo) string {
+
+func FormatFileType(info safcm.FileChangeInfo) string {
        switch info.Mode.Type() {
        case 0: // regular file
                return "file"
@@ -131,18 +138,18 @@ func formatFileType(info safcm.FileChangeInfo) string {
                return fmt.Sprintf("invalid type %v", info.Mode.Type())
        }
 }
-func formatFileUserGroup(info safcm.FileChangeInfo) string {
+func FormatFileUserGroup(info safcm.FileChangeInfo) string {
        return fmt.Sprintf("%s(%d) %s(%d)",
                EscapeControlCharacters(false, info.User), info.Uid,
                EscapeControlCharacters(false, info.Group), info.Gid)
 }
-func formatFilePerm(info safcm.FileChangeInfo) string {
+func FormatFilePerm(info safcm.FileChangeInfo) string {
        return fmt.Sprintf("%#o", config.FileModeToFullPerm(info.Mode))
 }
 
-func (s *Sync) formatPackageChanges(changes []safcm.PackageChange) string {
+func (c *Changes) FormatPackageChanges(changes []safcm.PackageChange) string {
        var buf strings.Builder
-       if s.config.DryRun {
+       if c.DryRun {
                fmt.Fprintf(&buf, "will install %d package(s): (dry-run)\n",
                        len(changes))
        } else {
@@ -150,14 +157,14 @@ func (s *Sync) formatPackageChanges(changes []safcm.PackageChange) string {
        }
        for _, x := range changes {
                // TODO: indicate if installation failed
-               fmt.Fprintf(&buf, "%s\n", s.formatTarget(x.Name))
+               fmt.Fprintf(&buf, "%s\n", c.FormatTarget(x.Name))
        }
        return buf.String()
 }
 
-func (s *Sync) formatServiceChanges(changes []safcm.ServiceChange) string {
+func (c *Changes) FormatServiceChanges(changes []safcm.ServiceChange) string {
        var buf strings.Builder
-       if s.config.DryRun {
+       if c.DryRun {
                fmt.Fprintf(&buf, "will modify %d service(s): (dry-run)\n",
                        len(changes))
        } else {
@@ -172,13 +179,13 @@ func (s *Sync) formatServiceChanges(changes []safcm.ServiceChange) string {
                        info = append(info, "enabled")
                }
                fmt.Fprintf(&buf, "%s: %s\n",
-                       s.formatTarget(x.Name),
+                       c.FormatTarget(x.Name),
                        strings.Join(info, ", "))
        }
        return buf.String()
 }
 
-func (s *Sync) formatCommandChanges(changes []safcm.CommandChange) string {
+func (c *Changes) FormatCommandChanges(changes []safcm.CommandChange) string {
        const indent = "   > "
 
        // Quiet hides all successful, non-trigger commands which produce no
@@ -188,7 +195,7 @@ func (s *Sync) formatCommandChanges(changes []safcm.CommandChange) string {
        // Instead, quiet shows them only when they produce output (e.g.
        // `ainsl`, `rm -v`) and thus modify the host's state.
        var noOutput int
-       if s.config.Quiet {
+       if c.Quiet {
                for _, x := range changes {
                        if x.Trigger == "" &&
                                x.Error == "" &&
@@ -199,18 +206,18 @@ func (s *Sync) formatCommandChanges(changes []safcm.CommandChange) string {
        }
 
        var buf strings.Builder
-       if s.config.DryRun {
+       if c.DryRun {
                fmt.Fprintf(&buf, "will execute %d command(s)", len(changes))
        } else {
                fmt.Fprintf(&buf, "executed %d command(s)", len(changes))
        }
-       if noOutput > 0 && !s.config.DryRun {
+       if noOutput > 0 && !c.DryRun {
                fmt.Fprintf(&buf, ", %d with no output (hidden)", noOutput)
        }
        if noOutput != len(changes) {
                fmt.Fprintf(&buf, ":")
        }
-       if s.config.DryRun {
+       if c.DryRun {
                fmt.Fprintf(&buf, " (dry-run)")
        }
        fmt.Fprintf(&buf, "\n")
@@ -220,7 +227,7 @@ func (s *Sync) formatCommandChanges(changes []safcm.CommandChange) string {
                        continue
                }
 
-               fmt.Fprintf(&buf, "%s", s.formatTarget(x.Command))
+               fmt.Fprintf(&buf, "%s", c.FormatTarget(x.Command))
                if x.Trigger != "" {
                        fmt.Fprintf(&buf, ", trigger for %q", x.Trigger)
                }
@@ -231,34 +238,34 @@ func (s *Sync) formatCommandChanges(changes []safcm.CommandChange) string {
                        // TODO: truncate very large outputs?
                        x := indentBlock(x.Output, indent)
                        fmt.Fprintf(&buf, ":\n%s",
-                               EscapeControlCharacters(s.isTTY, x))
+                               EscapeControlCharacters(c.IsTTY, x))
                }
                fmt.Fprintf(&buf, "\n")
        }
        return buf.String()
 }
 
-func (s *Sync) formatTarget(x string) string {
+func (c *Changes) FormatTarget(x string) string {
        x = fmt.Sprintf("%q", x) // escape!
-       return ColorString(s.isTTY, ColorCyan, x)
+       return ColorString(c.IsTTY, ColorCyan, x)
 }
 
-func (s *Sync) formatDiff(diff string) string {
+func (c *Changes) FormatDiff(diff string) string {
        const indent = "   "
 
        diff = indentBlock(diff, indent)
        // Never color diff content as we want to color the whole diff
        diff = EscapeControlCharacters(false, diff)
-       if !s.isTTY {
+       if !c.IsTTY {
                return diff
        }
 
        var res []string
        for _, x := range strings.Split(diff, "\n") {
                if strings.HasPrefix(x, indent+"+") {
-                       x = ColorString(s.isTTY, ColorGreen, x)
+                       x = ColorString(c.IsTTY, ColorGreen, x)
                } else if strings.HasPrefix(x, indent+"-") {
-                       x = ColorString(s.isTTY, ColorRed, x)
+                       x = ColorString(c.IsTTY, ColorRed, x)
                }
                res = append(res, x)
        }