Add pretty printing to redbean serializers

third_party/lua/serialize.c

@@ -0,0 +1,68 @@
+/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
+│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
+╞══════════════════════════════════════════════════════════════════════════════╡
+│ Copyright 2022 Justine Alexandra Roberts Tunney                              │
+│                                                                              │
+│ Permission to use, copy, modify, and/or distribute this software for         │
+│ any purpose with or without fee is hereby granted, provided that the         │
+│ above copyright notice and this permission notice appear in all copies.      │
+│                                                                              │
+│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
+│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
+│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
+│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
+│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
+│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
+│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
+│ PERFORMANCE OF THIS SOFTWARE.                                                │
+╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/log/rop.h"
+#include "libc/stdio/append.internal.h"
+#include "third_party/lua/cosmo.h"
+#include "third_party/lua/lua.h"
+
+bool LuaHasMultipleItems(lua_State *L) {
+  int i;
+  lua_pushnil(L);
+  for (i = 0; lua_next(L, -2); ++i) {
+    if (i > 0) {
+      lua_pop(L, 2);
+      return true;
+    }
+    lua_pop(L, 1);
+  }
+  return false;
+}
+
+int SerializeObjectIndent(char **buf, struct Serializer *z, int depth) {
+  int i;
+  RETURN_ON_ERROR(appendw(buf, '\n'));
+  for (i = 0; i < depth; ++i) {
+    RETURN_ON_ERROR(appends(buf, z->conf.indent));
+  }
+  return 0;
+OnError:
+  return -1;
+}
+
+int SerializeObjectStart(char **buf, struct Serializer *z, int depth,
+                         bool multi) {
+  RETURN_ON_ERROR(appendw(buf, '{'));
+  if (multi) {
+    RETURN_ON_ERROR(SerializeObjectIndent(buf, z, depth + 1));
+  }
+  return 0;
+OnError:
+  return -1;
+}
+
+int SerializeObjectEnd(char **buf, struct Serializer *z, int depth,
+                       bool multi) {
+  if (multi) {
+    RETURN_ON_ERROR(SerializeObjectIndent(buf, z, depth));
+  }
+  RETURN_ON_ERROR(appendw(buf, '}'));
+  return 0;
+OnError:
+  return -1;
+}