utility functions for implementing noja functions in c; built-ins for socket management; http server draft in noja

src/lib/builtins/buffer.c

@@ -1,5 +1,7 @@
 #include "buffer.h"
+#include "utils.h"
 #include "../utils/defs.h"
+#include "../utils/utf8.h"
 #include "../runtime/runtime.h"
 
 static int bin_new(Runtime *runtime, Object **argv, unsigned int argc, Object *rets[static MAX_RETS], Error *error)
@@ -12,7 +14,7 @@ static int bin_new(Runtime *runtime, Object **argv, unsigned int argc, Object *r
         Error_Report(error, 0, "Argument is not an int");
         return -1;
     }
-
+    
     long long int size = Object_GetInt(argv[0]);
 
     Object *temp = Object_NewBuffer(size, Runtime_GetHeap(runtime), error);
@@ -53,6 +55,22 @@ static int bin_sliceUp(Runtime *runtime, Object **argv, unsigned int argc, Objec
     return 1;
 }
 
+static int bin_fromString(Runtime *runtime, Object **argv, unsigned int argc, Object *rets[static MAX_RETS], Error *error)
+{
+    ASSERT(argc == 1);
+    ParsedArgument pargs[1];
+    if (!parseArgs(error, argv, argc, pargs, "s"))
+        return -1;
+
+    const char *str = pargs[0].as_string.data;
+    size_t      len = pargs[0].as_string.size;
+    Object *buffer = Object_NewBufferFromString(str, len, Runtime_GetHeap(runtime), error);
+    if (buffer == NULL)
+        return -1;
+    rets[0] = buffer;
+    return 1;
+}
+
 static int bin_toString(Runtime *runtime, Object **argv, unsigned int argc, Object *rets[static MAX_RETS], Error *error)
 {
     UNUSED(argc);
@@ -70,6 +88,9 @@ static int bin_toString(Runtime *runtime, Object **argv, unsigned int argc, Obje
     buffaddr = Object_GetBuffer(argv[0], &buffsize);
     ASSERT(buffaddr != NULL);
 
+    if(utf8_strlen(buffaddr, buffsize) < 0)
+        return returnValues2(error, runtime, rets, "ns", "Buffer doesn't contain valid UTF-8");
+    
     Object *temp = Object_FromString(buffaddr, buffsize, Runtime_GetHeap(runtime), error);
 
     if(temp == NULL)
@@ -80,7 +101,8 @@ static int bin_toString(Runtime *runtime, Object **argv, unsigned int argc, Obje
 }
 
 StaticMapSlot bins_buffer[] = {
-    { "new",   SM_FUNCT, .as_funct = bin_new, .argc = 1 },
+    { "new",     SM_FUNCT, .as_funct = bin_new,     .argc = 1 },
     { "sliceUp", SM_FUNCT, .as_funct = bin_sliceUp, .argc = 3 },
-    { "toString", SM_FUNCT, .as_funct = bin_toString, .argc = 1 },
+    { "toString",   SM_FUNCT, .as_funct = bin_toString,   .argc = 1 },
+    { "fromString", SM_FUNCT, .as_funct = bin_fromString, .argc = 1 },
 };