20

有没有办法转换这样的东西:

MyDirectoryFileLine

my-directory-file-line

我找到了一些将所有字母转换为大写或小写的方法,但不是这样;有任何想法吗?

4

9 回答 9

27

您可以使用s/\([A-Z]\)/-\L\1/g查找大写字母并将其替换为破折号,它是小写字母。但是,这会在行首给你一个破折号,所以你需要另一个 sed 表达式来处理它。

这应该有效:

sed --expression 's/\([A-Z]\)/-\L\1/g' \
    --expression 's/^-//'              \
    <<< "MyDirectoryFileLine"
于 2011-12-14T10:43:01.627 回答
13

我建议使用 sed 来做到这一点:

NEW=$(echo MyDirectoryFileLine        \
     | sed 's/\(.\)\([A-Z]\)/\1-\2/g' \
     | tr '[:upper:]' '[:lower:]')

UPD我忘记转换为小写,更新代码

于 2011-12-14T10:38:33.853 回答
8
echo MyDirectoryFileLine | perl -ne 'print lc(join("-", split(/(?=[A-Z])/)))'

印刷my-directory-file-line

于 2011-12-14T10:39:24.950 回答
3

@bilalq 的答案略有不同,涵盖了一些更可能的边缘情况:

echo "MyDirectoryMVPFileLine"                          \
| sed 's/\([^A-Z]\)\([A-Z0-9]\)/\1-\2/g'               \
| sed 's/\([A-Z0-9]\)\([A-Z0-9]\)\([^A-Z]\)/\1-\2\3/g' \
| tr '[:upper:]' '[:lower:]'

输出仍然是:

my-directory-mvp-file-line

但是也:

WhatADeal -> what-a-deal
TheMVP -> the-mvp
DoSomeABTesting -> do-some-ab-testing
The3rdThing -> the-3rd-thing
The3Things -> the-3-things
ThingNumber3 -> thing-number-3
于 2019-05-10T15:38:58.657 回答
1

我的微薄贡献适用于“/”(可能用于目录名称或 github 存储库名称)。它不像它可能的那样干净,但可以完成工作。我以@Peter 的贡献为基础,然后进行了一些调整。

function kebab_case() {
  echo -n "$1" |\
  sed 's/\([^A-Z+]\)\([A-Z0-9]\)/\1-\2/g' |\
  sed 's/\([0-9]\)\([A-Z]\)/\1-\2/g' |\
  sed 's/\([A-Z]\)\([0-9]\)/\1-\2/g' |\
  sed 's/--/-/g' |\
  sed 's/\([\/]\)-/\1/g' |\
  tr '[:upper:]' '[:lower:]'
}

function assert_kebab_equal() {
    local Actual
    local Expected
    Expected="$1"
    Actual="$(kebab_case "$2")"

    if [ "${Expected}" != "${Actual}" ]; then
      echo Error:
      echo "  Actual: ${Actual}"
      echo "Expected: ${Expected}"
    else
      echo "$2" "$1" | awk '{ printf "%-30s -> %-40s\n", $1, $2}'
    fi
}

assert_kebab_equal "abc-def" "AbcDef"
assert_kebab_equal "/abc-def-ghi/def" "/AbcDef-Ghi/Def"
assert_kebab_equal "/ab-cd-ef" "/AbCdEf"
assert_kebab_equal "repo-owner/repo-name" "RepoOwner/RepoName"
assert_kebab_equal "repo-12-owner/repo-12-name" "Repo12Owner/Repo12Name"
assert_kebab_equal "repo-12-3-owner/repo-12-name" "Repo12-3Owner/Repo12Name"
assert_kebab_equal "repo-owner/repo-name" "REPO-OWNER/REPO-NAME"
assert_kebab_equal "repo-owner-2/repo-name" "REPO-OWNER2/REPO-NAME"
assert_kebab_equal "repo-1-owner" "REPO1-OWNER"
assert_kebab_equal "repo-1-owner-1/22-repo-2-name" "REPO1-OWNER1/22REPO-2NAME"


# Outputs:

AbcDef                         -> abc-def                                 
/AbcDef-Ghi/Def                -> /abc-def-ghi/def                        
/AbCdEf                        -> /ab-cd-ef                               
RepoOwner/RepoName             -> repo-owner/repo-name                    
Repo12Owner/Repo12Name         -> repo-12-owner/repo-12-name              
Repo12-3Owner/Repo12Name       -> repo-12-3-owner/repo-12-name            
REPO-OWNER/REPO-NAME           -> repo-owner/repo-name                    
REPO-OWNER2/REPO-NAME          -> repo-owner-2/repo-name                  
REPO1-OWNER                    -> repo-1-owner                            
REPO1-OWNER1/22REPO-2NAME      -> repo-1-owner-1/22-repo-2-name         

于 2021-04-18T14:15:12.597 回答
1

此处发布的所有解决方案都不适合我。大多数都不能很好地支持多个平台。来自@4ndrew 的那个很接近,但它在具有多个大写字符彼此相邻的边缘情况下失败了(例如:FooMVPClient变成foo-mv-pclient而不是foo-mvp-client)。

这对我有用:

echo "MyDirectoryMVPFileLine"              \
| sed 's/\([a-z]\)\([A-Z]\)/\1-\2/g'       \
| sed 's/\([A-Z]\{2,\}\)\([A-Z]\)/\1-\2/g' \
| tr '[:upper:]' '[:lower:]'

输出:

my-directory-mvp-file-line
于 2018-03-20T00:29:26.180 回答
0

这可能对您有用:

<<<"MyDirectoryFileLine" sed 's/[A-Z]/-\l&/g;s/.//'
my-directory-file-line
于 2011-12-14T10:47:35.483 回答
0

使用GNU sed:

echo "MyDirectoryFileLine"|sed -e 's/\([A-Z]\)/-\L\1/g'

如果这让您感到困扰,您只需要去掉第一个破折号:

echo "MyDirectoryFileLine"|sed -e 's/\([A-Z]\)/-\L\1/g' -e 's/^-//'

使用BSD sed 它会更长一些:

echo "MyDirectoryFileLine"|sed -e 's/\([A-Z]\)/-\1/g' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/' -e 's/^-//'

更新:BSD 版本将与 GNU 版本一起使用,所以我建议使用后者。

于 2011-12-14T10:43:21.067 回答
0
echo "SomeACRONYMInCamelCaseString" \
 | sed -e 's/\([a-z]\)\([A-Z]\)/\1-\L\2/' \
 | sed -e 's/\(.*\)/\L\1/')

sed -e 's/\([a-z]\)\([A-Z]\)/\1-\L\2/'仅当前面有小写字母时,才用连字符和小写字母替换大写字母。 sed -e 's/\(.*\)/\L\1/'将整个字符串小写

于 2020-08-11T00:56:35.737 回答