Embed mruby and better clipboard support

src/utils/system.cc

@@ -115,52 +115,3 @@ Language language_for_file(const char *filename) {
   }
   return Language{};
 }
-
-char *get_from_clipboard(uint32_t *out_len) {
-  FILE *pipe = popen("xclip -selection clipboard -o", "r");
-  if (!pipe) {
-    *out_len = 0;
-    return nullptr;
-  }
-  size_t capacity = 4096;
-  size_t length = 0;
-  char *buffer = (char *)malloc(capacity);
-  if (!buffer) {
-    pclose(pipe);
-    *out_len = 0;
-    return nullptr;
-  }
-  size_t n;
-  while ((n = fread(buffer + length, 1, capacity - length, pipe)) > 0) {
-    length += n;
-    if (length == capacity) {
-      capacity *= 2;
-      char *tmp = (char *)realloc(buffer, capacity);
-      if (!tmp) {
-        free(buffer);
-        pclose(pipe);
-        *out_len = 0;
-        return nullptr;
-      }
-      buffer = tmp;
-    }
-  }
-  pclose(pipe);
-  char *result = (char *)realloc(buffer, length + 1);
-  if (result) {
-    result[length] = '\0';
-    buffer = result;
-  } else {
-    buffer[length] = '\0';
-  }
-  *out_len = length;
-  return buffer;
-}
-
-void copy_to_clipboard(const char *text, size_t len) {
-  FILE *pipe = popen("xclip -selection clipboard", "w");
-  if (!pipe)
-    return;
-  fwrite(text, sizeof(char), len, pipe);
-  pclose(pipe);
-}