Rewrite

src/basic.c

@@ -0,0 +1,96 @@
+#include "basic.h"
+#include <stddef.h>
+#include <string.h>
+
+int http_streq(HTTP_String s1, HTTP_String s2)
+{
+	if (s1.len != s2.len)
+		return 0;
+	for (int i = 0; i < s1.len; i++)
+		if (s1.ptr[i] != s2.ptr[i])
+			return 0;
+	return 1;
+}
+
+static char to_lower(char c)
+{
+	if (c >= 'A' && c <= 'Z')
+		return c - 'A' + 'a';
+	return c;
+}
+
+int http_streqcase(HTTP_String s1, HTTP_String s2)
+{
+	if (s1.len != s2.len)
+		return 0;
+	for (int i = 0; i < s1.len; i++)
+		if (to_lower(s1.ptr[i]) != to_lower(s2.ptr[i]))
+			return 0;
+	return 1;
+}
+
+HTTP_String http_trim(HTTP_String s)
+{
+	int i = 0;
+	while (i < s.len && (s.ptr[i] == ' ' || s.ptr[i] == '\t'))
+		i++;
+
+	if (i == s.len) {
+		s.ptr = NULL;
+		s.len = 0;
+	} else {
+		s.ptr += i;
+		s.len -= i;
+		while (s.ptr[s.len-1] == ' ' || s.ptr[s.len-1] == '\t')
+			s.len--;
+	}
+
+	return s;
+}
+
+static bool is_printable(char c)
+{
+    return c >= ' ' && c <= '~';
+}
+
+#include <stdio.h>
+void print_bytes(HTTP_String prefix, HTTP_String src)
+{
+    if (src.len == 0)
+        return;
+
+    FILE *stream = stdout;
+
+    bool new_line = true;
+    int cur = 0;
+    for (;;) {
+        int start = cur;
+
+        while (cur < src.len && is_printable(src.ptr[cur]))
+            cur++;
+
+        if (new_line) {
+            fwrite(prefix.ptr, 1, prefix.len, stream);
+            new_line = false;
+        }
+
+        fwrite(src.ptr + start, 1, cur - start, stream);
+
+        if (cur == src.len)
+            break;
+
+        if (src.ptr[cur] == '\n') {
+            putc('\\', stream);
+            putc('n',  stream);
+            putc('\n', stream);
+            new_line = true;
+        } else if (src.ptr[cur] == '\r') {
+            putc('\\', stream);
+            putc('r',  stream);
+        } else {
+            putc('.', stream);
+        }
+        cur++;
+    }
+    putc('\n', stream);
+}