Write restart command to savefile

1 files changed, 39 insertions, 0 deletions

diff --git a/src/io.c b/src/io.c
index 94816f9..cb14029 100644
--- a/src/io.c
+++ b/src/io.c
@@ -1,5 +1,6 @@
 #include <stdbool.h>
 #include <stdlib.h>
+#include <string.h>
 #include "io.h"
 #include "navier-stokes.h"
 
@@ -113,3 +114,41 @@ int read_u(_Complex double* u, int K1, int K2, FILE* file){
 
   return 0;
 }
+
+// remove an entry from params string (inplace)
+int remove_entry(
+  char* param_str,
+  char* entry
+){
+  char* ptr;
+  char* rw_ptr;
+  char* bfr;
+  char* entry_ptr=entry;
+  int go=1;
+
+  for(ptr=param_str, rw_ptr=ptr; *ptr!='\0'; ptr++){
+    for(bfr=ptr,entry_ptr=entry; *bfr==*entry_ptr; bfr++, entry_ptr++){
+      // check if reached end of entry
+      if(*(bfr+1)=='=' && *(entry_ptr+1)=='\0'){
+	go=0;
+	break;
+      }
+    }
+    if(go==1){
+      *rw_ptr=*ptr;
+      rw_ptr++;
+    }
+    //reset
+    if(*ptr==';'){
+      go=1;
+    }
+  }
+  *rw_ptr='\0';
+
+  // remove trailing ';'
+  if (param_str[strlen(param_str)-1]==';'){
+    *(param_str+(strlen(param_str)-1))='\0';
+  }
+
+  return 0;
+}