From 9147a85dc32f06be2a4cfe4e422fdbc52679adc5 Mon Sep 17 00:00:00 2001
From: Brett <brettmaster1@gmail.com>
Date: Mon, 8 Jan 2024 22:08:48 -0500
Subject: [PATCH] string_view trim

---
 include/blt/std/string.h | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/include/blt/std/string.h b/include/blt/std/string.h
index 4f3e44f..d4b82b2 100755
--- a/include/blt/std/string.h
+++ b/include/blt/std/string.h
@@ -292,6 +292,29 @@ namespace blt::string
         return s;
     }
     
+    static inline BLT_CPP20_CONSTEXPR std::string_view ltrim(std::string_view s)
+    {
+        size_t start_pos = 0;
+        for (auto c = s.begin(); c != s.end() && std::isblank(*c); ++c, start_pos++);
+        return s.substr(start_pos);
+    }
+    
+    static inline BLT_CPP20_CONSTEXPR std::string_view rtrim(std::string_view s)
+    {
+        size_t end_pos = 0;
+        for (auto c = s.rbegin(); c != s.rend() && std::isblank(*c); ++c, end_pos++);
+        return s.substr(0, s.size() - end_pos);
+    }
+    
+    static inline BLT_CPP20_CONSTEXPR std::string_view trim(std::string_view s)
+    {
+        size_t start_pos = 0;
+        for (auto c = s.begin(); c != s.end() && std::isblank(*c); ++c, start_pos++);
+        size_t end_pos = s.size();
+        for (auto c = s.rbegin(); c != s.rend() && std::isblank(*c); ++c, end_pos--);
+        return s.substr(start_pos, end_pos - start_pos);
+    }
+    
     // trim from both ends (in place)
     static inline BLT_CPP20_CONSTEXPR std::string& trim(std::string& s)
     {