[upstream-utils][mpack] Add upstream util for mpack (wpilibsuite#4500)

.github/workflows/upstream-utils.yml

@@ -49,6 +49,10 @@ jobs:
         run: |
           cd upstream_utils
           ./update_llvm.py
+      - name: Run update_mpack.py
+        run: |
+          cd upstream_utils
+          ./update_mpack.py
       - name: Run update_stack_walker.py
         run: |
           cd upstream_utils

upstream_utils/mpack_patches/0001-Don-t-emit-inline-defs.patch

@@ -0,0 +1,22 @@
+From 05864e768ca1458c1e24f433d091306a7d47562b Mon Sep 17 00:00:00 2001
+From: PJ Reiniger <[email protected]>
+Date: Sat, 29 Oct 2022 12:09:03 -0400
+Subject: [PATCH 1/3] Don't emit inline defs
+
+---
+ src/mpack/mpack-platform.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/mpack/mpack-platform.c b/src/mpack/mpack-platform.c
+index 6599e1f..d4a2fa3 100644
+--- a/src/mpack/mpack-platform.c
++++ b/src/mpack/mpack-platform.c
+@@ -24,7 +24,7 @@
+ // standalone definitions of all (non-static) inline functions in MPack.
+
+ #define MPACK_INTERNAL 1
+-#define MPACK_EMIT_INLINE_DEFS 1
++#define MPACK_EMIT_INLINE_DEFS 0
+
+ #include "mpack-platform.h"
+ #include "mpack.h"

upstream_utils/mpack_patches/0002-Update-amalgamation-script.patch

@@ -0,0 +1,24 @@
+From d4d045c843d4b4de747d800e570c32cff3759a80 Mon Sep 17 00:00:00 2001
+From: PJ Reiniger <[email protected]>
+Date: Sat, 29 Oct 2022 12:16:36 -0400
+Subject: [PATCH 2/3] Update amalgamation script
+
+---
+ tools/amalgamate.sh | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/tools/amalgamate.sh b/tools/amalgamate.sh
+index 2e24e27..4dfe999 100755
+--- a/tools/amalgamate.sh
++++ b/tools/amalgamate.sh
+@@ -74,8 +74,8 @@ echo -e "#endif\n" >> $HEADER
+
+ # assemble source
+ echo -e "#define MPACK_INTERNAL 1" >> $SOURCE
+-echo -e "#define MPACK_EMIT_INLINE_DEFS 1\n" >> $SOURCE
+-echo -e "#include \"mpack.h\"\n" >> $SOURCE
++echo -e "#define MPACK_EMIT_INLINE_DEFS 0\n" >> $SOURCE
++echo -e "#include \"wpi/mpack.h\"\n" >> $SOURCE
+ for f in $SOURCES; do
+     echo -e "\n/* $f.c */" >> $SOURCE
+     sed -e 's@^#include ".*@/* & */@' -e '0,/^ \*\/$/d' src/$f >> $SOURCE

upstream_utils/mpack_patches/0003-Use-namespace-for-C.patch

@@ -0,0 +1,158 @@
+From 37854ea8a4a4b387940719c40bd32792f1e6e027 Mon Sep 17 00:00:00 2001
+From: PJ Reiniger <[email protected]>
+Date: Sat, 29 Oct 2022 12:22:50 -0400
+Subject: [PATCH 3/3] Use namespace for C++
+
+---
+ src/mpack/mpack-common.c   | 2 ++
+ src/mpack/mpack-expect.c   | 2 ++
+ src/mpack/mpack-node.c     | 2 ++
+ src/mpack/mpack-platform.c | 2 ++
+ src/mpack/mpack-platform.h | 2 +-
+ src/mpack/mpack-reader.c   | 2 ++
+ src/mpack/mpack-writer.c   | 2 ++
+ src/mpack/mpack-writer.h   | 3 ++-
+ 8 files changed, 15 insertions(+), 2 deletions(-)
+
+diff --git a/src/mpack/mpack-common.c b/src/mpack/mpack-common.c
+index 2c133a3..dc7207f 100644
+--- a/src/mpack/mpack-common.c
++++ b/src/mpack/mpack-common.c
+@@ -24,6 +24,7 @@
+ #include "mpack-common.h"
+
+ MPACK_SILENCE_WARNINGS_BEGIN
++namespace mpack {
+
+ const char* mpack_error_to_string(mpack_error_t error) {
+     #if MPACK_STRINGS
+@@ -748,4 +749,5 @@ void mpack_print_file_callback(void* context, const char* data, size_t count) {
+ }
+ #endif
+
++}  // namespace mpack
+ MPACK_SILENCE_WARNINGS_END
+diff --git a/src/mpack/mpack-expect.c b/src/mpack/mpack-expect.c
+index 81576d1..6232a67 100644
+--- a/src/mpack/mpack-expect.c
++++ b/src/mpack/mpack-expect.c
+@@ -24,6 +24,7 @@
+ #include "mpack-expect.h"
+
+ MPACK_SILENCE_WARNINGS_BEGIN
++namespace mpack {
+
+ #if MPACK_EXPECT
+
+@@ -880,4 +881,5 @@ size_t mpack_expect_key_cstr(mpack_reader_t* reader, const char* keys[], bool fo
+
+ #endif
+
++}  // namespace mpack
+ MPACK_SILENCE_WARNINGS_END
+diff --git a/src/mpack/mpack-node.c b/src/mpack/mpack-node.c
+index 3d4b0f4..aba9897 100644
+--- a/src/mpack/mpack-node.c
++++ b/src/mpack/mpack-node.c
+@@ -24,6 +24,7 @@
+ #include "mpack-node.h"
+
+ MPACK_SILENCE_WARNINGS_BEGIN
++namespace mpack {
+
+ #if MPACK_NODE
+
+@@ -2401,4 +2402,5 @@ mpack_node_t mpack_node_map_value_at(mpack_node_t node, size_t index) {
+
+ #endif
+
++}  // namespace mpack
+ MPACK_SILENCE_WARNINGS_END
+diff --git a/src/mpack/mpack-platform.c b/src/mpack/mpack-platform.c
+index d4a2fa3..75d2de3 100644
+--- a/src/mpack/mpack-platform.c
++++ b/src/mpack/mpack-platform.c
+@@ -30,6 +30,7 @@
+ #include "mpack.h"
+
+ MPACK_SILENCE_WARNINGS_BEGIN
++namespace mpack {
+
+ #if MPACK_DEBUG
+
+@@ -218,4 +219,5 @@ void* mpack_realloc(void* old_ptr, size_t used_size, size_t new_size) {
+ }
+ #endif
+
++}  // namespace mpack
+ MPACK_SILENCE_WARNINGS_END
+diff --git a/src/mpack/mpack-platform.h b/src/mpack/mpack-platform.h
+index 79604c9..27a2f9e 100644
+--- a/src/mpack/mpack-platform.h
++++ b/src/mpack/mpack-platform.h
+@@ -1043,7 +1043,7 @@ void mpack_assert_fail(const char* message);
+  */
+
+ #ifdef __cplusplus
+-    #define MPACK_EXTERN_C_BEGIN extern "C" {
++    #define MPACK_EXTERN_C_BEGIN namespace mpack {
+     #define MPACK_EXTERN_C_END   }
+ #else
+     #define MPACK_EXTERN_C_BEGIN /*nothing*/
+diff --git a/src/mpack/mpack-reader.c b/src/mpack/mpack-reader.c
+index c6d2223..a135879 100644
+--- a/src/mpack/mpack-reader.c
++++ b/src/mpack/mpack-reader.c
+@@ -24,6 +24,7 @@
+ #include "mpack-reader.h"
+
+ MPACK_SILENCE_WARNINGS_BEGIN
++namespace mpack {
+
+ #if MPACK_READER
+
+@@ -1284,4 +1285,5 @@ void mpack_print_stdfile_to_callback(FILE* file, mpack_print_callback_t callback
+
+ #endif
+
++}  // namespace mpack
+ MPACK_SILENCE_WARNINGS_END
+diff --git a/src/mpack/mpack-writer.c b/src/mpack/mpack-writer.c
+index 4d052b1..9630d9e 100644
+--- a/src/mpack/mpack-writer.c
++++ b/src/mpack/mpack-writer.c
+@@ -24,6 +24,7 @@
+ #include "mpack-writer.h"
+
+ MPACK_SILENCE_WARNINGS_BEGIN
++namespace mpack {
+
+ #if MPACK_WRITER
+
+@@ -1772,4 +1773,5 @@ void mpack_complete_array(mpack_writer_t* writer) {
+ #endif // MPACK_BUILDER
+ #endif // MPACK_WRITER
+
++}  // namespace mpack
+ MPACK_SILENCE_WARNINGS_END
+diff --git a/src/mpack/mpack-writer.h b/src/mpack/mpack-writer.h
+index c239ee6..abeee1a 100644
+--- a/src/mpack/mpack-writer.h
++++ b/src/mpack/mpack-writer.h
+@@ -1168,6 +1168,7 @@ MPACK_EXTERN_C_END
+
+ #if defined(__cplusplus) || defined(MPACK_DOXYGEN)
+
++namespace mpack {
+ /**
+  * @name C++ write overloads
+  * @{
+@@ -1304,7 +1305,7 @@ MPACK_INLINE void mpack_write_kv(mpack_writer_t* writer, const char *key, const
+ /**
+  * @}
+  */
+-
++}  // namespace mpack
+ #endif /* __cplusplus */
+
+ /**

upstream_utils/update_mpack.py

@@ -0,0 +1,59 @@
+#!/usr/bin/env python3
+
+import os
+import shutil
+import subprocess
+
+from upstream_utils import (
+    get_repo_root,
+    clone_repo,
+    walk_cwd_and_copy_if,
+    git_am,
+)
+
+
+def main():
+    upstream_root = clone_repo("https://github.com/ludocode/mpack", "v1.1")
+    wpilib_root = get_repo_root()
+    wpiutil = os.path.join(wpilib_root, "wpiutil")
+
+    # Delete old install
+    for d in [
+        "src/main/native/thirdparty/mpack/src",
+        "src/main/native/thirdparty/mpack/include",
+    ]:
+        shutil.rmtree(os.path.join(wpiutil, d), ignore_errors=True)
+
+    # Apply patches to upstream Git repo
+    os.chdir(upstream_root)
+
+    for f in [
+        "0001-Don-t-emit-inline-defs.patch",
+        "0002-Update-amalgamation-script.patch",
+        "0003-Use-namespace-for-C.patch",
+    ]:
+        git_am(
+            os.path.join(wpilib_root, "upstream_utils/mpack_patches", f),
+        )
+
+    # Run the amalgmation script
+    subprocess.check_call(["bash", "tools/amalgamate.sh"])
+
+    # Copy the files
+    amalgamation_source_dir = os.path.join(
+        ".", ".build", "amalgamation", "src", "mpack"
+    )
+    os.chdir(amalgamation_source_dir)
+
+    walk_cwd_and_copy_if(
+        lambda dp, f: f.endswith(".h"),
+        os.path.join(wpiutil, "src/main/native/thirdparty/mpack/include/wpi"),
+    )
+    walk_cwd_and_copy_if(
+        lambda dp, f: f.endswith(".c"),
+        os.path.join(wpiutil, "src/main/native/thirdparty/mpack/src"),
+    )
+
+
+if __name__ == "__main__":
+    main()

wpiutil/src/main/native/thirdparty/mpack/src/mpack.cpp

@@ -237,6 +237,7 @@ void* mpack_realloc(void* old_ptr, size_t used_size, size_t new_size) {
 }
 #endif
 
+}  // namespace mpack
 MPACK_SILENCE_WARNINGS_END
 
 /* mpack/mpack-common.c.c */
@@ -246,6 +247,7 @@ MPACK_SILENCE_WARNINGS_END
 /* #include "mpack-common.h" */
 
 MPACK_SILENCE_WARNINGS_BEGIN
+namespace mpack {
 
 const char* mpack_error_to_string(mpack_error_t error) {
     #if MPACK_STRINGS
@@ -970,6 +972,7 @@ void mpack_print_file_callback(void* context, const char* data, size_t count) {
 }
 #endif
 
+}  // namespace mpack
 MPACK_SILENCE_WARNINGS_END
 
 /* mpack/mpack-writer.c.c */
@@ -979,6 +982,7 @@ MPACK_SILENCE_WARNINGS_END
 /* #include "mpack-writer.h" */
 
 MPACK_SILENCE_WARNINGS_BEGIN
+namespace mpack {
 
 #if MPACK_WRITER
 
@@ -2727,6 +2731,7 @@ void mpack_complete_array(mpack_writer_t* writer) {
 #endif // MPACK_BUILDER
 #endif // MPACK_WRITER
 
+}  // namespace mpack
 MPACK_SILENCE_WARNINGS_END
 
 /* mpack/mpack-reader.c.c */
@@ -2736,6 +2741,7 @@ MPACK_SILENCE_WARNINGS_END
 /* #include "mpack-reader.h" */
 
 MPACK_SILENCE_WARNINGS_BEGIN
+namespace mpack {
 
 #if MPACK_READER
 
@@ -3996,6 +4002,7 @@ void mpack_print_stdfile_to_callback(FILE* file, mpack_print_callback_t callback
 
 #endif
 
+}  // namespace mpack
 MPACK_SILENCE_WARNINGS_END
 
 /* mpack/mpack-expect.c.c */
@@ -4005,6 +4012,7 @@ MPACK_SILENCE_WARNINGS_END
 /* #include "mpack-expect.h" */
 
 MPACK_SILENCE_WARNINGS_BEGIN
+namespace mpack {
 
 #if MPACK_EXPECT
 
@@ -4861,6 +4869,7 @@ size_t mpack_expect_key_cstr(mpack_reader_t* reader, const char* keys[], bool fo
 
 #endif
 
+}  // namespace mpack
 MPACK_SILENCE_WARNINGS_END
 
 /* mpack/mpack-node.c.c */
@@ -4870,6 +4879,7 @@ MPACK_SILENCE_WARNINGS_END
 /* #include "mpack-node.h" */
 
 MPACK_SILENCE_WARNINGS_BEGIN
+namespace mpack {
 
 #if MPACK_NODE
 
@@ -7247,5 +7257,5 @@ mpack_node_t mpack_node_map_value_at(mpack_node_t node, size_t index) {
 
 #endif
 
-}  // namespace wpi
+}  // namespace mpack
 MPACK_SILENCE_WARNINGS_END