1 files changed, 47 insertions, 0 deletions
diff --git a/src/stringutils.c b/src/stringutils.c
new file mode 100644
index 0000000..172d40d
--- /dev/null
+++ b/src/stringutils.c
@@ -0,0 +1,47 @@
+#include "stringutils.h"
+#include <string.h>
+
+void string_replace(char *str, char old_char, char new_char) {
+    for(;;) {
+        char c = *str;
+        if(c == old_char)
+            *str = new_char;
+        else if(c == '\0')
+            break;
+        ++str;
+    }
+}
+
+char* lstrip(char *str) {
+    for(;;) {
+        char c = *str;
+        if(c != ' ' && c != '\t' && c != '\n')
+            break;
+        else if(c == '\0')
+            break;
+        ++str;
+    }
+    return str;
+}
+
+void rstrip(char *str) {
+    int len = strlen(str);
+    if(len == 0)
+        return;
+
+    char *p = str + len - 1;
+    while(p != str) {
+        char c = *p;
+        if(c != ' ' && c != '\t' && c != '\n')
+            break;
+        --p;
+    }
+
+    p[1] = '\0';
+}
+
+char* strip(char *str) {
+    str = lstrip(str);
+    rstrip(str);
+    return str;
+}
+\ No newline at end of file