modify the regular expression for obtaining sample ID

tasks/fastp.wdl

@@ -3,7 +3,7 @@ task fastp {
   File read2
   String read1name=sub(basename(read1),"\\.\\S+$", "")
   String read2name=sub(basename(read2),"\\.\\S+$", "")
-  String sample_name=sub(basename(read1),"\\_*1.\\S+$", "")
+  String sample_name=sub(basename(read1),"\\_R1.\\S+$", "")
   String adapter_sequence
   String adapter_sequence_r2
   String docker

tasks/hisat2.wdl

@@ -2,7 +2,7 @@ task hisat2 {
   File idx
   File read_1P
   File read_2P
-  String sample_name=sub(basename(read_1P),"\\_*1.\\S+$", "")
+  String sample_name=sub(basename(read_1P),"\\_R1.\\S+$", "")
   String idx_prefix
   String docker
   String cluster