Added eq and casecmp

include/sv.h

@@ -20,6 +20,7 @@ extern struct String_View sv_strn(const char *s, size_t n);
 extern struct String_View sv_trim_left(struct String_View sv);
 extern struct String_View sv_trim_right(struct String_View sv);
 extern struct String_View sv_trim(struct String_View sv);
-
+extern int sv_eq(const struct String_View sv1, const struct String_View sv2);
+extern int sv_casecmp( const struct String_View sv1, const struct String_View sv2);
 
 #endif

src/sv.c

@@ -6,17 +6,17 @@
 static bool sv_is_space(int c) {
     return c == ' ' || c == '\t' || c == '\n' || c == '\r' || c == '\v' || c == '\f';
 }
-//static int to_lower(char c) {
-  //return (c >= 'A' && c <= 'Z') ? c + 'a' - 'A' : c;
-//}
+static int sv_tolc(char c) {
+    return (c >= 'A' && c <= 'Z') ? c + 'a' - 'A' : c;
+}
 
 struct String_View sv_str(const char *s) {
-  struct String_View str = {s == NULL ? 0 : strlen(s), (char *) s };
-  return str;
+    struct String_View str = {s == NULL ? 0 : strlen(s), (char *) s };
+    return str;
 }
 struct String_View sv_strn(const char *s, size_t n) {
-  struct String_View str = {n, (char *) s};
-  return str;
+    struct String_View str = {n, (char *) s};
+    return str;
 }
 
 struct String_View sv_trim(struct String_View s){
@@ -34,3 +34,25 @@ struct String_View sv_trim_right(struct String_View s){
 
     return s;
 }
+
+int sv_eq( const struct String_View sv1, const struct String_View sv2){
+    if (sv1.len != sv2.len) {
+        return 0;
+    } else {
+        return memcmp(sv1.buf, sv2.buf, sv1.len) == 0;
+    }
+    return 0;
+}
+int sv_casecmp(const struct String_View sv1, const struct String_View sv2){
+    size_t i = 0;
+    while (i < sv1.len && i < sv2.len) {
+        int c1 = sv_tolc(sv1.buf[i]);
+        int c2 = sv_tolc(sv2.buf[i]);
+        if (c1 < c2) return -1;
+        if (c1 > c2) return 1;
+        i++;
+    }
+    if (i < sv1.len) return 1;
+    if (i < sv2.len) return -1;
+    return 0;
+}

tests/06_sv_eq.c

@@ -0,0 +1,25 @@
+#define DEBUG
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+#include "../include/sv.h"
+
+int main(void){
+    const char *s = "   Hello World!   ";
+    const char *s2 = "Hello World!";
+    
+    SV sv = sv_str(s);
+    SV sv3 = sv_str(s2);
+    assert(sv.buf != NULL);
+    assert(strlen(s) == sv.len);
+    assert( memcmp(sv.buf, s, strlen(s)) == 0);
+    SV sv2 = sv_trim(sv);
+    assert(sv2.len == strlen(s2));
+    assert(memcmp(s2, sv2.buf, sv2.len) == 0);
+    assert(sv2.len != strlen(s));
+    assert( memcmp(s, sv2.buf, sv2.len) != 0);
+    assert( !sv_eq(sv, sv2));
+    assert( sv_eq(sv2,sv3));
+    return EXIT_SUCCESS;
+}

tests/07_case_cmp.c

@@ -0,0 +1,29 @@
+#define DEBUG
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+#include "../include/sv.h"
+
+int main(void){
+    const char *s = "   Hello World!   ";
+    const char *s2 = "Hello World!";
+    const char *s3 = "hElLo wOrLD!";
+    const char *s4 = "Goodbye World!";
+
+    SV sv = sv_str(s);
+    SV sv3 = sv_str(s3);
+    SV sv4 = sv_str(s4);
+    assert(sv.buf != NULL);
+    assert(strlen(s) == sv.len);
+    assert( memcmp(sv.buf, s, strlen(s)) == 0);
+    SV sv2 = sv_trim(sv);
+    assert(sv2.len == strlen(s2));
+    assert(memcmp(s2, sv2.buf, sv2.len) == 0);
+    assert(sv2.len != strlen(s));
+    assert( memcmp(s, sv2.buf, sv2.len) != 0);
+    assert( !sv_eq(sv, sv2));
+    assert( sv_casecmp(sv2,sv3) == 0);
+    assert( sv_casecmp(sv3,sv4) == 1);
+    return EXIT_SUCCESS;
+}