From c415e2ca8ff51f41984ace8fe796187e6ad0fa27 Mon Sep 17 00:00:00 2001
From: Timerix <timerix11@gmail.com>
Date: Tue, 12 Aug 2025 19:51:07 +0300
Subject: [PATCH] str_trim

---
 include/tlibc/errors.h     |  2 +-
 include/tlibc/string/str.h |  3 +++
 src/errors.c               |  6 +++---
 src/string/str.c           | 36 ++++++++++++++++++++++++++++++++++++
 4 files changed, 43 insertions(+), 4 deletions(-)

diff --git a/include/tlibc/errors.h b/include/tlibc/errors.h
index c736bb7..b323c82 100755
--- a/include/tlibc/errors.h
+++ b/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__));
diff --git a/include/tlibc/string/str.h b/include/tlibc/string/str.h
index 4c3b4e7..509b03f 100755
--- a/include/tlibc/string/str.h
+++ b/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);
diff --git a/src/errors.c b/src/errors.c
index d9bffb2..72ec4a3 100755
--- a/src/errors.c
+++ b/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);
 }
diff --git a/src/string/str.c b/src/string/str.c
index f95b656..84f74c4 100755
--- a/src/string/str.c
+++ b/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;
+    }
+}