模式的 Bash 搜索文件，用包含 Git 分支名称的代码替换模式 [英] Bash Search File for Pattern, Replace Pattern With Code that Includes Git Branch Name

问题描述

我有一个 README.md 文件，我想用一行代码替换文本标识符 {{CODESHIP_CODE}} - 特别是包含 git 分支的构建状态图像代码片段名字.

I have a README.md file where I'd like to replace a text identifier {{CODESHIP_CODE}} with a line of code – specifically a build status image code snippet that includes the git branch name.

我认为它看起来像这样......

I'm thinking it would look something like this...

1. 将当前分支git rev-parse --abbrev-ref HEAD放在bash变量中
2. 将要搜索的模式/字符串放在变量中.此模式/字符串仅用作标识符以快速定位我想在 README.md 文件中输出构建状态图像代码的位置.
3. 使用 sed(可能是 grep)在 README.md 文件中搜索指定的 {{CODESHIP_CODE}} 模式/字符串并替换它带有构建图像状态代码

1. Place the current branch git rev-parse --abbrev-ref HEAD in bash variable
2. Place the pattern/string to search for in a variable. This pattern/string is just used as an identifier to quickly locate where in the README.md file I want to output my build status image code.
3. Use sed (possibly grep) to search the README.md file for the specified {{CODESHIP_CODE}} pattern/string and replace it with the build image status code

我写的代码是这样的:

#!/bin/bash

# Get the current branch
function git_branch {
    git rev-parse --abbrev-ref HEAD
}

# Set variable to current branch
branch=$(git_branch)

# Define the pattern to search for
# This pattern/string gets replaced with the build status image code
id="{{CODESHIP_CODE}}"

# Create build status image code
# Inject the $branch variable into the correct location
codeship_build_status="[ ![Codeship Status for ExampleGitHubUser/ExampleRepo](https://codeship.com/projects/a99d9999-9b9f-9999-99aa-999a9a9a9999/status?branch=$branch)](https://codeship.com/projects/999999)"

# Find the pattern to replace
# Then replace it with the build status image
sed -i -e "s/{{CODESHIP_CODE}}/$codeship_build_status/g" README.md

问题是我不断收到以下错误:

The problem is that I keep getting the following error:

sed: 1: "s/{{CODESHIP_CODE}}/[ ! ...": 替换命令中的错误标志:'a'

我不确定如何解决此问题，以便脚本正常工作.任何帮助将不胜感激.

I'm not sure how to resolve this issue, so that the script works correctly. Any help would be greatly appreciated.

推荐答案

您不能使用包含未转义分隔符的替换字符串.转义字符串中的分隔符，或切换到不同的分隔符.

You can't use a replacement string that contains the unescaped delimiter. Escape the delimiters in the string, or switch to different ones.

${codeship_build_status////\/} # escape
# or
s%{{CODESHIP_CODE}}%$codeship_build_status%g #

确保新的分隔符不包含在字符串中.

Make sure the new delimiter isn't contained in the string.

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