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| pathshorten() { | |
| local parts=() # 用于存储缩短后的路径部分 | |
| local head=${(%):-"%-1~"} # ${(%):-word} 把 word 展开 | |
| local tail=${${(D)PWD}#$head} # ${(D)PWD} 缩短替换目录 | |
| if [[ $1 == '-u' ]] { # 尝试找到每个目录部分的唯一最短前缀，确保路径的唯一性 | |
| local base=${~head} # 展开为实际路径（不能加双引号!!） | |
| # 将 tail 按 '/' 分割，并处理每一部分 | |
| # 空 tail 则替换成 '/'，因为之后要用 ':h' 处理。"/":h 为空，而 "":h 为 "." | |
| for dir (${(s./.)${tail:-/}:h}) { | |
| local short='' # 用于存储当前目录部分的缩短形式 | |
| # 遍历当前目录的每个字符，直到找到一个唯一的匹配项 | |
| for i ({1..$#dir}) { | |
| short+=$dir[$i] | |
| matching=($base/$short*(/N)) | |
| if (( $#matching == 1 )) { | |
| break | |
| } | |
| } | |
| parts+=/$short | |
| base+="/$dir" | |
| } | |
| } else { # 将路径的每一部分缩短为第一个字符 | |
| # 将 tail 按 '/' 分割，并处理每一部分 | |
| for dir (${(s./.)${tail:-/}:h}) { | |
| parts+=/$dir[1] | |
| } | |
| } | |
| print "$head${(j..)parts}${tail:+/${PWD:t}}" | |
| } |
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