Create string_view struct

1 files changed, 60 insertions, 0 deletions

diff --git a/string_view.c b/string_view.c
new file mode 100644
index 0000000..d9d6632
--- /dev/null
+++ b/string_view.c
@@ -0,0 +1,60 @@
+/*
+ * Papo IRC Server
+ * Copyright (C) 2021 Johnny Richard
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#include "string_view.h"
+
+#include <assert.h>
+#include <string.h>
+
+string_view_t
+string_view_new(const char *cstr, size_t size)
+{
+  assert(cstr);
+
+  return (string_view_t) {
+    .size = size,
+    .data = cstr
+  };
+}
+
+string_view_t
+string_view_from_cstr(const char *cstr)
+{
+  return string_view_new(cstr, strlen(cstr));
+}
+
+
+string_view_t
+string_view_chop_by_delim(string_view_t *sv, char delim)
+{
+  size_t i = 0;
+  while (sv->data[i] != delim && i < sv->size) {
+    ++i;
+  }
+
+  string_view_t chopped_sv = string_view_new(sv->data, i);
+
+  if (i < sv->size) {
+    sv->size -= i + 1;
+    sv->data += i + 1;
+  } else {
+    sv->size -= i;
+    sv->data += i;
+  }
+
+  return chopped_sv;
+}