我想合并两个 yaml 文档，结果包含

• 所有映射值（最后一个优先）
• 串联数组

例如给定这个文件

# file1.yml
animals:
  - elephant
    donkey
flavours:
  sour:
    - lemon
  sweet:
    - chocolate
strange: true

和这个文件

#file2.yml
animals:
  - monkey
    pelican
flavours:
  sweet:
    - vanilla
strange: false

结果应包含所有节点，以及合并的数组和不是上一个文件中的数组的值

#result.yml
animals:
  - elephant
    donkey
    monkey
    pelican
flavours:
  sour:
    - lemon
  sweet:
    - chocolate
      vanilla
strange: false

yq 能做到吗？

将 YAML 文件与yq，连接数组。

假设

In both file1.yml and file2.yml, the animals数组包含带有多行字符串的单个索引。

elephant
donkey

for file1.yml, and

monkey
pelican

for file2.yml.

既然你问了串联数组，我假设file1.yml, file2.yml and results.yml应该是这样的：

# file1.yml
animals:
  - elephant
  - donkey
flavours:
  sour:
    - lemon
  sweet:
    - chocolate
strange: true

# file2.yml
animals:
  - monkey
  - pelican
flavours:
  sweet:
    - vanilla
strange: false

# result.yml
animals:
  - elephant
  - donkey
  - monkey
  - pelican
flavours:
  sour:
    - lemon
  sweet:
    - chocolate
    - vanilla
strange: false

Example

With yq4.x，您可以使用ireduce运算符合并两个或多个文件：

https://mikefarah.gitbook.io/yq/operators/reduce#merge-all-yaml-files-together https://mikefarah.gitbook.io/yq/operators/reduce#merge-all-yaml-files-together

$ yq4 eval-all '. as $item ireduce ({}; . * $item)' file1.yml file2.yml
animals:
  - monkey
  - pelican
flavours:
  sour:
    - lemon
  sweet:
    - vanilla
strange: false

两个文件已合并，但重复的键和数组已被最新文件覆盖。

要追加数组而不是覆盖它们，只需添加一个+在合并运算符之后（*).

https://mikefarah.gitbook.io/yq/operators/multiply-merge#merge-appending-arrays https://mikefarah.gitbook.io/yq/operators/multiply-merge#merge-appending-arrays

$ yq4 eval-all '. as $item ireduce ({}; . *+ $item)' file1.yml file2.yml
animals:
  - elephant
  - donkey
  - monkey
  - pelican
flavours:
  sour:
    - lemon
  sweet:
    - chocolate
    - vanilla
strange: false