From 7e36a84f2f3d19fa541ccd18642be9d0e1e9e9af Mon Sep 17 00:00:00 2001
From: Randy Jordan <randyjordan@email.com>
Date: Thu, 10 Jul 2025 19:19:52 -0500
Subject: [PATCH] Added sv trims

---
 include/sv.h             |  4 +++-
 src/sv.c                 | 19 ++++++++++++++++++-
 tests/03_sv_trim.c       | 17 +++++++++++++++++
 tests/04_sv_trim_left.c  | 17 +++++++++++++++++
 tests/05_sv_trim_right.c | 17 +++++++++++++++++
 5 files changed, 72 insertions(+), 2 deletions(-)
 create mode 100644 tests/03_sv_trim.c
 create mode 100644 tests/04_sv_trim_left.c
 create mode 100644 tests/05_sv_trim_right.c

diff --git a/include/sv.h b/include/sv.h
index 4be0f99..1b14d3f 100644
--- a/include/sv.h
+++ b/include/sv.h
@@ -18,6 +18,8 @@ typedef struct String_View SV;
 
 SV sv_str(const char *s);
 SV sv_strn(const char *s, size_t len);
-
+SV sv_trim(SV s);
+SV sv_trim_left(SV s);
+SV sv_trim_right(SV s);
 
 #endif
diff --git a/src/sv.c b/src/sv.c
index 99b6a3b..0040629 100644
--- a/src/sv.c
+++ b/src/sv.c
@@ -1,12 +1,29 @@
 #include "../include/sv.h"
 #include <string.h>
+#include <stdbool.h>
+
+static bool is_space(int c) {
+    return c == ' ' || c == '\t' || c == '\n' || c == '\r' || c == '\v' || c == '\f';
+}
 
 SV sv_str(const char *s){
   SV str = {s == NULL ? 0 : strlen(s), (char *)s};
   return str;
 }
-
 SV sv_strn(const char *s, size_t len){
   SV str = {len, (char *) s};
   return str; 
 }
+SV sv_trim(SV s){
+    while (s.len > 0 && is_space((int) *s.buf)) s.buf++, s.len--;
+    while (s.len > 0 && is_space((int) *(s.buf + s.len - 1))) s.len--;
+    return s;
+}
+SV sv_trim_left(SV s){
+    while (s.len > 0 && is_space((int) *s.buf)) s.buf++, s.len--;
+    return s;
+}
+SV sv_trim_right(SV s){
+    while (s.len > 0 && is_space((int) *(s.buf + s.len - 1))) s.len--;
+    return s;
+}
diff --git a/tests/03_sv_trim.c b/tests/03_sv_trim.c
new file mode 100644
index 0000000..b8e8d15
--- /dev/null
+++ b/tests/03_sv_trim.c
@@ -0,0 +1,17 @@
+#define DEBUG
+#include "../include/sv.h"
+#include "../include/except.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main(void){
+    const char *s = "Hello World";
+    const char *s1 = "   Hello World   ";
+    SV sv = sv_strn(s,strlen(s));
+    SV sv1 = sv_strn(s1,strlen(s1));
+    sv1 = sv_trim(sv1);
+    ASSERTED(strncmp(sv.buf,sv1.buf,sv1.len) == 0);
+    
+    return EXIT_SUCCESS;
+}
diff --git a/tests/04_sv_trim_left.c b/tests/04_sv_trim_left.c
new file mode 100644
index 0000000..d2a42dc
--- /dev/null
+++ b/tests/04_sv_trim_left.c
@@ -0,0 +1,17 @@
+#define DEBUG
+#include "../include/sv.h"
+#include "../include/except.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main(void){
+    const char *s = "Hello World";
+    const char *s1 = "   Hello World";
+    SV sv = sv_strn(s,strlen(s));
+    SV sv1 = sv_strn(s1,strlen(s1));
+    sv1 = sv_trim_left(sv1);
+    ASSERTED(strncmp(sv.buf,sv1.buf,sv1.len) == 0);
+    
+    return EXIT_SUCCESS;
+}
diff --git a/tests/05_sv_trim_right.c b/tests/05_sv_trim_right.c
new file mode 100644
index 0000000..0ebf0ac
--- /dev/null
+++ b/tests/05_sv_trim_right.c
@@ -0,0 +1,17 @@
+#define DEBUG
+#include "../include/sv.h"
+#include "../include/except.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main(void){
+    const char *s = "Hello World";
+    const char *s1 = "Hello World   ";
+    SV sv = sv_strn(s,strlen(s));
+    SV sv1 = sv_strn(s1,strlen(s1));
+    sv1 = sv_trim_right(sv1);
+    ASSERTED(strncmp(sv.buf,sv1.buf,sv1.len) == 0);
+    
+    return EXIT_SUCCESS;
+}