str_trim

include/tlibc/errors.h

@@ -22,7 +22,7 @@ typedef struct Error {
 } Error;
 
 Error* Error_create(const char* msg, bool is_msg_on_heap, ErrorCallPos p);
-void Error_destroy(Error* e);
+void Error_free(Error* e);
 void Error_addCallPos(Error* e, ErrorCallPos p);
 str Error_toStr(Error* e);
 void Error_printAndExit(Error* e) __attribute__ ((__noreturn__));

include/tlibc/string/str.h

@@ -48,3 +48,6 @@ str str_toUpper(str src);
 str str_toLower(str src);
 
 str hex_to_str(Array(u8) buf, bool uppercase);
+
+/// @brief removes blank characters from start and end of the line
+void str_trim(str* line, bool set_zero_at_end);

src/errors.c

@@ -12,10 +12,11 @@ Error* Error_create(const char* msg, bool is_msg_on_heap, ErrorCallPos p){
     return e;
 }
 
-void Error_destroy(Error* e){
+void Error_free(Error* e){
     if(e->is_msg_on_heap)
         free(e->msg.data);
     free(e->call_stack.data);
+    free(e);
 }
 
 void Error_addCallPos(Error* e, ErrorCallPos p){
@@ -47,7 +48,6 @@ void Error_printAndExit(Error* e){
     str e_str = Error_toStr(e);
     printfe("%s\n", e_str.data);
     free(e_str.data);
-    Error_destroy(e);
-    free(e);
+    Error_free(e);
     exit(111);
 }

src/string/str.c

@@ -132,3 +132,39 @@ str hex_to_str(Array(u8) buf, bool uppercase){
     StringBuilder_append_memory(&sb, buf, uppercase);
     return StringBuilder_getStr(&sb);
 }
+
+void str_trim(str* line, bool set_zero_at_end){
+    bool stop = false;
+    // loop forward
+    while(line->size > 0 && !stop){
+        char first_char = line->data[line->size - 1];
+        switch(first_char){
+            case '\0': case '\r': case '\n':
+            case '\t': case ' ':
+                line->data++;
+                line->size--;
+                break;
+            default:
+                stop = true;
+                break;
+        }
+    }
+    // loop backward
+    while(line->size > 0 && !stop)
+    {
+        char last_char = line->data[line->size - 1];
+        switch(last_char){
+            case '\0': case '\r': case '\n':
+            case '\t': case ' ':
+                line->size--;
+                break;
+            default:
+                stop = true;
+                break;
+        }
+    }
+    if(set_zero_at_end){
+        line->data[line->size] = '\0';
+        line->isZeroTerminated = true;
+    }
+}