filesystem rework

src/base/cptr.c

@@ -57,6 +57,41 @@ uint32 cptr_indexOf(char* ptr, char* fragment){
             if(fragment[fi]==0)
                 return si-fi+1;
         }
+        else fi=0;
+    }
+    return -1;
+}
+uint32 cptr_indexOfChar(char* ptr, char fragment){
+    char sc=*ptr;
+    for(int si=0; sc!=0; si++){
+        sc=ptr[si];
+        if(sc==fragment){
+            return si;
+        }
+    }
+    return -1;
+}
+uint32 cptr_lastIndexOf(char* ptr, char* fragment){
+    char sc=*ptr;
+    int fi_last=cptr_length(fragment)-1;
+    for(int si=cptr_length(ptr)-1, fi=fi_last; si>=0; si--){
+        sc=ptr[si];
+        if(sc==fragment[fi]){
+            if(fi==0)
+                return si;
+            fi--;
+        }
+        else fi=fi_last;
+    }
+    return -1;
+}
+uint32 cptr_lastIndexOfChar(char* ptr, char fragment){
+    char sc=*ptr;
+    for(int si=cptr_length(ptr)-1; si>=0; si--){
+        sc=ptr[si];
+        if(sc==fragment){
+            return si;
+        }
     }
     return -1;
 }

src/base/cptr.h

@@ -25,6 +25,15 @@ bool cptr_endsWith(char* ptr, char* fragment);
 /// @brief search for <fragment> in <ptr>
 /// @return index of first <fragment> inclusion or -1 if not found
 uint32 cptr_indexOf(char* ptr, char* fragment);
+/// @brief search for <fragment> in <ptr>
+/// @return index of first <fragment> inclusion or -1 if not found
+uint32 cptr_indexOfChar(char* ptr, char fragment);
+/// @brief search for <fragment> in <ptr>
+/// @return index of last <fragment> inclusion or -1 if not found
+uint32 cptr_lastIndexOf(char* ptr, char* fragment);
+/// @brief search for <fragment> in <ptr>
+/// @return index of last <fragment> inclusion or -1 if not found
+uint32 cptr_lastIndexOfChar(char* ptr, char fragment);
 
 static inline bool cptr_contains(char* ptr, char* fragment){
     // if(cptr_indexOf(ptr, fragment)==-1)