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-rw-r--r--libs/nanopb/tests/cyclic_messages/SConscript11
-rw-r--r--libs/nanopb/tests/cyclic_messages/cyclic.proto27
-rw-r--r--libs/nanopb/tests/cyclic_messages/cyclic_callback.options7
-rw-r--r--libs/nanopb/tests/cyclic_messages/encode_cyclic_callback.c148
4 files changed, 193 insertions, 0 deletions
diff --git a/libs/nanopb/tests/cyclic_messages/SConscript b/libs/nanopb/tests/cyclic_messages/SConscript
new file mode 100644
index 00000000..c782001c
--- /dev/null
+++ b/libs/nanopb/tests/cyclic_messages/SConscript
@@ -0,0 +1,11 @@
+Import("env")
+
+# Encode cyclic messages with callback fields
+
+c = Copy("$TARGET", "$SOURCE")
+env.Command("cyclic_callback.proto", "cyclic.proto", c)
+env.NanopbProto(["cyclic_callback", "cyclic_callback.options"])
+
+enc_callback = env.Program(["encode_cyclic_callback.c", "cyclic_callback.pb.c", "$COMMON/pb_encode.o", "$COMMON/pb_common.o"])
+
+
diff --git a/libs/nanopb/tests/cyclic_messages/cyclic.proto b/libs/nanopb/tests/cyclic_messages/cyclic.proto
new file mode 100644
index 00000000..8cab0b14
--- /dev/null
+++ b/libs/nanopb/tests/cyclic_messages/cyclic.proto
@@ -0,0 +1,27 @@
+// Test structures with cyclic references.
+// These can only be handled in pointer/callback mode,
+// see associated .options files.
+
+syntax = "proto2";
+
+message TreeNode
+{
+ optional int32 leaf = 1;
+ optional TreeNode left = 2;
+ optional TreeNode right = 3;
+}
+
+message Dictionary
+{
+ repeated KeyValuePair dictItem = 1;
+}
+
+message KeyValuePair
+{
+ required string key = 1;
+ optional string stringValue = 2;
+ optional int32 intValue = 3;
+ optional Dictionary dictValue = 4;
+ optional TreeNode treeValue = 5;
+}
+
diff --git a/libs/nanopb/tests/cyclic_messages/cyclic_callback.options b/libs/nanopb/tests/cyclic_messages/cyclic_callback.options
new file mode 100644
index 00000000..fd4e1e1c
--- /dev/null
+++ b/libs/nanopb/tests/cyclic_messages/cyclic_callback.options
@@ -0,0 +1,7 @@
+TreeNode.left type:FT_CALLBACK
+TreeNode.right type:FT_CALLBACK
+
+Dictionary.data type:FT_CALLBACK
+KeyValuePair.key max_size:8
+KeyValuePair.stringValue max_size:8
+KeyValuePair.treeValue type:FT_CALLBACK
diff --git a/libs/nanopb/tests/cyclic_messages/encode_cyclic_callback.c b/libs/nanopb/tests/cyclic_messages/encode_cyclic_callback.c
new file mode 100644
index 00000000..7f67e70c
--- /dev/null
+++ b/libs/nanopb/tests/cyclic_messages/encode_cyclic_callback.c
@@ -0,0 +1,148 @@
+/* This program parses an input string in a format a bit like JSON:
+ * {'foobar': 1234, 'xyz': 'abc', 'tree': [[[1, 2], 3], [4, 5]]}
+ * and encodes it as protobuf
+ *
+ * Note: The string parsing here is not in any way intended to be robust
+ * nor safe against buffer overflows. It is just for this test.
+ */
+
+#include <pb_encode.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "cyclic_callback.pb.h"
+
+static char *find_end_of_item(char *p)
+{
+ int depth = 0;
+ do {
+ if (*p == '[' || *p == '{') depth++;
+ if (*p == ']' || *p == '}') depth--;
+ p++;
+ } while (depth > 0 || (*p != ',' && *p != '}'));
+
+ if (*p == '}')
+ return p; /* End of parent dict */
+
+ p++;
+ while (*p == ' ') p++;
+ return p;
+}
+
+/* Parse a tree in format [[1 2] 3] and encode it directly to protobuf */
+static bool encode_tree(pb_ostream_t *stream, const pb_field_t *field, void * const *arg)
+{
+ TreeNode tree = TreeNode_init_zero;
+ char *p = (char*)*arg;
+
+ if (*p == '[')
+ {
+ /* This is a tree branch */
+ p++;
+ tree.left.funcs.encode = encode_tree;
+ tree.left.arg = p;
+
+ p = find_end_of_item(p);
+ tree.right.funcs.encode = encode_tree;
+ tree.right.arg = p;
+ }
+ else
+ {
+ /* This is a leaf node */
+ tree.has_leaf = true;
+ tree.leaf = atoi(p);
+ }
+
+ return pb_encode_tag_for_field(stream, field) &&
+ pb_encode_submessage(stream, TreeNode_fields, &tree);
+}
+
+/* Parse a dictionary in format {'name': value} and encode it directly to protobuf */
+static bool encode_dictionary(pb_ostream_t *stream, const pb_field_t *field, void * const *arg)
+{
+ int textlen;
+ char *p = (char*)*arg;
+ if (*p == '{') p++;
+ while (*p != '}')
+ {
+ KeyValuePair pair = KeyValuePair_init_zero;
+
+ if (*p != '\'')
+ PB_RETURN_ERROR(stream, "invalid key, missing quote");
+
+ p++; /* Starting quote of key */
+ textlen = strchr(p, '\'') - p;
+ strncpy(pair.key, p, textlen);
+ pair.key[textlen] = 0;
+ p += textlen + 2;
+
+ while (*p == ' ') p++;
+
+ if (*p == '[')
+ {
+ /* Value is a tree */
+ pair.treeValue.funcs.encode = encode_tree;
+ pair.treeValue.arg = p;
+ }
+ else if (*p == '\'')
+ {
+ /* Value is a string */
+ pair.has_stringValue = true;
+ p++;
+ textlen = strchr(p, '\'') - p;
+ strncpy(pair.stringValue, p, textlen);
+ pair.stringValue[textlen] = 0;
+ }
+ else if (*p == '{')
+ {
+ /* Value is a dictionary */
+ pair.has_dictValue = true;
+ pair.dictValue.dictItem.funcs.encode = encode_dictionary;
+ pair.dictValue.dictItem.arg = p;
+ }
+ else
+ {
+ /* Value is integer */
+ pair.has_intValue = true;
+ pair.intValue = atoi(p);
+ }
+
+ p = find_end_of_item(p);
+
+ if (!pb_encode_tag_for_field(stream, field))
+ return false;
+
+ if (!pb_encode_submessage(stream, KeyValuePair_fields, &pair))
+ return false;
+ }
+
+ return true;
+}
+
+
+int main(int argc, char *argv[])
+{
+ uint8_t buffer[256];
+ pb_ostream_t stream = pb_ostream_from_buffer(buffer, sizeof(buffer));
+ Dictionary dict = Dictionary_init_zero;
+
+ if (argc <= 1)
+ {
+ fprintf(stderr, "Usage: %s \"{'foobar': 1234, ...}\"\n", argv[0]);
+ return 1;
+ }
+
+ dict.dictItem.funcs.encode = encode_dictionary;
+ dict.dictItem.arg = argv[1];
+
+ if (!pb_encode(&stream, Dictionary_fields, &dict))
+ {
+ fprintf(stderr, "Encoding error: %s\n", PB_GET_ERROR(&stream));
+ return 1;
+ }
+
+ fwrite(buffer, 1, stream.bytes_written, stdout);
+ return 0;
+}
+
+