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json_patch: add first implementation only with patch application

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Initially I wanted to also do a function that generates the JSON patch from
two JSON documents, but even just applying the JSON patch was a bit of
work, especially when needing to satisfy all the test-cases.

This change defines all the operation in the RFC6902. The addition isn't
too big (for the json_patch_apply() function), as part of the heavy lifting
is also done by JSON pointer logic.

All the ops were tested with the test-cases defined at:
  https://github.com/json-patch/json-patch-tests

RFC6902: https://tools.ietf.org/html/rfc6902

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>
This commit is contained in:
Alexandru Ardelean
2021-04-24 17:00:13 +03:00
committed by Eric Hawicz
parent e4d9fbd52a
commit 538b046884
5 changed files with 306 additions and 1 deletions
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10
CMakeLists.txt
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@@ -88,7 +88,8 @@ option(ENABLE_RDRAND "Enable RDRAND Hardware RNG Hash Seed."
option(ENABLE_THREADING "Enable partial threading support." OFF)
option(OVERRIDE_GET_RANDOM_SEED "Override json_c_get_random_seed() with custom code." OFF)
option(DISABLE_EXTRA_LIBS "Avoid linking against extra libraries, such as libbsd." OFF)
option(DISABLE_JSON_POINTER "Disable JSON pointer (RFC6901) support." OFF)
option(DISABLE_JSON_POINTER "Disable JSON pointer (RFC6901) and JSON patch support." OFF)
option(DISABLE_JSON_PATCH "Disable JSON patch (RFC6902) support." OFF)
option(NEWLOCALE_NEEDS_FREELOCALE "Work around newlocale bugs in old FreeBSD by calling freelocale" OFF)
@@ -429,8 +430,15 @@ if (NOT DISABLE_JSON_POINTER)
set(JSON_C_PUBLIC_HEADERS ${JSON_C_PUBLIC_HEADERS} ${PROJECT_SOURCE_DIR}/json_pointer.h)
set(JSON_C_SOURCES ${JSON_C_SOURCES} ${PROJECT_SOURCE_DIR}/json_pointer.c)
set(JSON_H_JSON_POINTER "#include \"json_pointer.h\"")
if (NOT DISABLE_JSON_PATCH)
set(JSON_C_PUBLIC_HEADERS ${JSON_C_PUBLIC_HEADERS} ${PROJECT_SOURCE_DIR}/json_patch.h)
set(JSON_C_SOURCES ${JSON_C_SOURCES} ${PROJECT_SOURCE_DIR}/json_patch.c)
set(JSON_H_JSON_PATCH "#include \"json_patch.h\"")
endif()
else()
set(JSON_H_JSON_POINTER "")
set(JSON_H_JSON_PATCH "")
endif()
configure_file(json.h.cmakein ${PROJECT_BINARY_DIR}/json.h @ONLY)