X-Git-Url: https://ruderich.org/simon/gitweb/?a=blobdiff_plain;f=remote%2Fsync%2Ftriggers.go;fp=remote%2Fsync%2Ftriggers.go;h=d201835e7e7271b9729da033a409c53b004edce9;hb=9269fa3c94e700afc0be823f58ea473a2db8f3dc;hp=0000000000000000000000000000000000000000;hpb=fd97e8019e2ab166d9475ed59782c86247d8430b;p=safcm%2Fsafcm.git

diff --git a/remote/sync/triggers.go b/remote/sync/triggers.go
new file mode 100644
index 0000000..d201835
--- /dev/null
+++ b/remote/sync/triggers.go
@@ -0,0 +1,71 @@
+// MsgSyncReq: run triggers for changed files
+
+// Copyright (C) 2021  Simon Ruderich
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// 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 sync
+
+import (
+	"path/filepath"
+	"strings"
+
+	"ruderich.org/simon/safcm"
+)
+
+// queueTriggers queues all triggers applying to file.
+func (s *Sync) queueTriggers(file *safcm.File) {
+	for _, path := range triggerPaths(file.Path) {
+		if s.req.Files[path].TriggerCommands == nil {
+			continue
+		}
+		// Queue each trigger only once
+		if s.triggersActive[path] {
+			s.log.Debugf(
+				"files: %q: skipping trigger on %q, already active",
+				file.Path, path)
+			continue
+		}
+
+		s.log.Verbosef("files: %q: queuing trigger on %q",
+			file.Path, path)
+		s.triggers = append(s.triggers, path)
+		s.triggersActive[path] = true
+	}
+}
+
+// triggerPaths returns all possible trigger paths for path, that is the path
+// itself and all parent paths. The paths are returned in reverse order so
+// more specific triggers can override effects of less specific ones (first
+// "/" or ".", then the parents and finally path itself).
+func triggerPaths(path string) []string {
+	sep := string(filepath.Separator)
+	if path == sep || path == "." {
+		return []string{path}
+	}
+	parts := strings.Split(path, sep)
+	if strings.HasPrefix(path, sep) {
+		// Absolute path
+		parts[0] = sep
+	} else {
+		// Relative path
+		parts = append([]string{"."}, parts...)
+	}
+
+	var res []string
+	for i := 0; i < len(parts); i++ {
+		res = append(res, filepath.Join(parts[:i+1]...))
+	}
+	return res
+}