bash 有条件地运行脚本在 travis.yml 中不起作用，为什么？

Running script conditionally does not work in travis.yml, why?

提问by user1283776

The following causes travis to not build at all. When I try to validate the travis.ymlfile, it complains that the line just above the if statement is missing a -character at column 3, but the error has to do with the if statement below.

以下原因导致 travis 根本无法构建。当我尝试验证travis.yml文件时，它抱怨 if 语句正上方的行在第-3 列缺少一个字符，但错误与下面的 if 语句有关。

Do I have to move the if statement out to a script?

我是否必须将 if 语句移到脚本中？

# Deploy
after_success:
  - ./tools/docker-push-container.sh
  - if [ $TRAVIS_BRANCH == "master" && $TRAVIS_PULL_REQUEST == "false" ]; then
      ./.travis/success_message.sh
    fi

回答by larsks

You're making some assumptions about YAML syntax that are causing you problems. If you "exend" a line of YAML by indenting subsequent lines, like this:

您正在对导致您出现问题的 YAML 语法做出一些假设。如果您通过缩进后续行来“扩展”一行 YAML，如下所示：

- The quick brown fox
  jumped over the
  lazy dog.

It is exactly like you instead wrote this:

就像你写的那样：

- The quick brown fox jumped over the lazy dog.

This means that your shell fragment, which you've written as:

这意味着你的 shell 片段，你已经写成：

  - if [ $TRAVIS_BRANCH == "master" && $TRAVIS_PULL_REQUEST == "false" ]; then
      ./.travis/success_message.sh
    fi

Actually becomes:

实际上变成：

if [ $TRAVIS_BRANCH == "master" && $TRAVIS_PULL_REQUEST == "false" ]; then ./.travis/success_message.sh fi

And if you try run that line in the shell, you get:

如果您尝试在 shell 中运行该行，您会得到：

sh: -c: line 1: syntax error: unexpected end of file

If you want to include a multi-line shell script in your YAML document, your best bet is probably to use the verbatim block operator, |, like this:

如果要在 YAML 文档中包含多行 shell 脚本，最好的办法可能是使用逐字块运算符|，如下所示：

  - |
    if [ $TRAVIS_BRANCH == "master" && $TRAVIS_PULL_REQUEST == "false" ]; then
      ./.travis/success_message.sh
    fi

Which will result, as intended, in:

这将导致，如预期的那样：

if [ $TRAVIS_BRANCH == "master" && $TRAVIS_PULL_REQUEST == "false" ]; then
  ./.travis/success_message.sh
fi

Alternatively, you could just make proper use of semicolons:

或者，您可以正确使用分号：

  - if [ $TRAVIS_BRANCH == "master" && $TRAVIS_PULL_REQUEST == "false" ]; then
      ./.travis/success_message.sh;
    fi

Note the new ;before the terminal fi. This results in:

注意;终端前的新fi。这导致：

if [ $TRAVIS_BRANCH == "master" && $TRAVIS_PULL_REQUEST == "false" ]; then ./.travis/success_message.sh; fi

...which is perfectly valid shell syntax.

...这是完全有效的 shell 语法。

回答by Raf

I tried the above solution by larsksbut, it did not work for me and could be because in bashwhen you use &&and ||you need to separate the conditions.

我试图通过上述方案larsks但是，它并没有对我来说有效，可能是因为bash当你使用&&和||需要分离的条件。

I had the following (according to above solution)

我有以下（根据上述解决方案）

  - if [ $TRAVIS_PULL_REQUEST == false && $TRAVIS_BRANCH == "development" ]; then
        echo "# Bump version and flyway migrate db"; 
    else 
        echo "Skip version increment!"; 
    fi

And I also checked the .travis.ymlin Travis Lintand it shows as valid but, according to bash the above can be separated as shown below, also mentioned in this SO Questionand I changed to following

我还检查.travis.yml在特拉维斯棉绒，它显示了作为有效的，但是，根据打坏上述可以分离如下所示，同样在此提到的SO问题和余改变为以下

    - if [ $TRAVIS_PULL_REQUEST == false ] && [ $TRAVIS_BRANCH == "development" ]; then
            echo "# Bump version and flyway migrate db"; 
        else 
            echo "Skip version increment!"; 
        fi

And travis buildworked. It kind of make sense because above is valid way to use &&and ||in bash. Just sharing in case someone else come across a similar issue.

和特拉维斯构建工作。这是有道理的，因为上面是使用&&和|| 的有效方法 在 bash 中。只是分享以防其他人遇到类似的问题。

回答by Rebekah Apelt

Raf's solution worked for me with separating the conditionals with []

Raf 的解决方案对我有用，用 [] 分隔条件

[ $TRAVIS_PULL_REQUEST == false ] && [ $TRAVIS_BRANCH == "develop" ];

回答by MrMeemus

None of the suggested workarounds worked for me, I used this instead:

建议的解决方法都不适合我，我改用了这个：

- if [[ ( "$TRAVIS_OS_NAME" == "osx" ) && ( "$TOXENV" == "py36" ) ]]; then brew update; fi