improving sockets, fixed some bugs

core.c

@@ -71,9 +71,6 @@ Scratch scratchStart(Arena **conflicts, size_t conflictCount) {
     return scratch;
 }
 
-#define DeferLoop(begin_stmnt, end_stmnt) for(int __defer_i = ((begin_stmnt), 0); __defer_i < 1; (++__defer_i, (end_stmnt)))
-#define WithScratch(scratchName) Scratch scratchName; DeferLoop(scratchName = scratchStart(0, 0), scratchEnd(scratchName))
-
 void scratchEnd(Scratch scratch) {
     arenaFreeFrom(scratch.arena, scratch.start);
 }
@@ -206,8 +203,8 @@ StringList strSplit(Arena *arena, string splitStr, string inputStr) {
         size_t splitCount = 0;
         size_t c = 0;
         size_t start = 0;
-        void *beginning = (char *)arena->memory + arena->head;
-        while (c < inputStr.length - splitStr.length) {
+        void *beginning = arena->memory + arena->head;
+        while (c < inputStr.length) {
             string mystr = strSlice(inputStr, c, c + splitStr.length);
             if (strEql(mystr, splitStr)) {
                 string *splitString = PushStruct(arena, string);
@@ -337,13 +334,20 @@ string formatTimeYmd(Arena *arena, Timestamp *time) {
     return buf;
 }
 
-void printStderr(const char *fmt, ...) {
+function void printStderr(const char *fmt, ...) {
     va_list argList;
     va_start(argList, fmt);
     os_print(StdStream_stdout, fmt, argList);
     va_end(argList);
 }
 
+function void printlnStderr(const char *fmt, ...) {
+    va_list argList;
+    va_start(argList, fmt);
+    os_println(StdStream_stdout, fmt, argList);
+    va_end(argList);
+}
+
 function void printStdout(const char *fmt, ...) {
     va_list argList;
     va_start(argList, fmt);
@@ -351,8 +355,27 @@ function void printStdout(const char *fmt, ...) {
     va_end(argList);
 }
 
+function void printlnStdout(const char *fmt, ...) {
+    va_list argList;
+    va_start(argList, fmt);
+    os_println(StdStream_stdout, fmt, argList);
+    va_end(argList);
+}
+
 void (*print)(const char *fmt, ...) = &printStdout;
-#define SetStdErr() DeferLoop(print = &printStderr, print = &printStdout)
+void (*println)(const char *fmt, ...) = &printlnStdout;
+
+void setStdout() {
+    print = &printStdout;
+    println = &printlnStdout;
+}
+
+void setStderr() {
+    print = &printStderr;
+    println = &printlnStderr;
+}
+
+#define UseStderr() DeferLoop(setStderr(), setStdout())
 
 // TODO(dledda): mat print functions
 /*