save regexp groups in G1, G2 env variables instead of 1, 2 (#642)

internal/core/core_test.go

@@ -214,7 +214,7 @@ import (
 )
 
 func main() {
-	if os.Getenv("1") != "on" {
+	if os.Getenv("G1") != "on" {
 		panic("environment not set")
 	}
 

internal/core/path.go

@@ -526,7 +526,7 @@ func (pa *path) externalCmdEnv() externalcmd.Environment {
 
 	if len(pa.matches) > 1 {
 		for i, ma := range pa.matches[1:] {
-			env[strconv.FormatInt(int64(i+1), 10)] = ma
+			env["G"+strconv.FormatInt(int64(i+1), 10)] = ma
 		}
 	}
 

rtsp-simple-server.yml

@@ -211,7 +211,7 @@ paths:
     # The following environment variables are available:
     # * RTSP_PATH: path name
     # * RTSP_PORT: server port
-    # * 1, 2, ...: regular expression groups, if path name is
+    # * G1, G2, ...: regular expression groups, if path name is
     #   a regular expression.
     runOnInit:
     # Restart the command if it exits suddenly.
@@ -223,7 +223,7 @@ paths:
     # The following environment variables are available:
     # * RTSP_PATH: path name
     # * RTSP_PORT: server port
-    # * 1, 2, ...: regular expression groups, if path name is
+    # * G1, G2, ...: regular expression groups, if path name is
     #   a regular expression.
     runOnDemand:
     # Restart the command if it exits suddenly.
@@ -241,7 +241,7 @@ paths:
     # The following environment variables are available:
     # * RTSP_PATH: path name
     # * RTSP_PORT: server port
-    # * 1, 2, ...: regular expression groups, if path name is
+    # * G1, G2, ...: regular expression groups, if path name is
     #   a regular expression.
     runOnReady:
     # Restart the command if it exits suddenly.
@@ -252,7 +252,7 @@ paths:
     # The following environment variables are available:
     # * RTSP_PATH: path name
     # * RTSP_PORT: server port
-    # * 1, 2, ...: regular expression groups, if path name is
+    # * G1, G2, ...: regular expression groups, if path name is
     #   a regular expression.
     runOnRead:
     # Restart the command if it exits suddenly.