Bash&用于将相对路径转换为绝对路径的Perl脚本

时间:2017-09-16 18:58:36

标签: regex bash perl absolute-path

我有一个顶级目录路径,我希望将所有相对路径转换为递归地存在于此目录中的所有文件中的绝对路径。 例如我有这个目录结构:

$ tree
.
|-- DIR
|   |-- inner_level.ext1
|   `-- inner_level.ext2
|-- top_level.ext1
`-- top_level.ext2

top_level.ext1的内容:

../../a/b/c/filename_1.txt
../../a/d/e/filename_2.txt

假设顶级目录路径为/this/is/the/abs/dir/path/

想要将top_level.ext1的内容转换为:

/this/is/the/abs/a/b/c/filename_1.txt
/this/is/the/abs/a/d/e/filename_2.txt

top_level.ext2的内容:

cc_include+=-I../../util1/src/module1/moduleController -I../../util/src/module1/module2Controller;
cc_include+=-I../../util2/src/module2/moduleUtility;

想要将top_level.ext2的内容转换为:

cc_include+=-I/this/is/the/abs/util1/src/module1/moduleController -I/this/is/the/abs/util/src/module1/module2Controller;
cc_include+=-I/this/is/the/abs/util2/src/module2/moduleUtility;

另外,想要对DIR内的文件应用相同的转换。

e.g。 内容DIR/inner_level.ext1

../../../a/b/c/filename_1.txt
../../../a/d/e/filename_2.txt

想要将DIR/inner_level.ext1的内容转换为:

/this/is/the/abs/a/b/c/filename_1.txt
/this/is/the/abs/a/d/e/filename_2.txt

同样适用于DIR/inner_level.ext2

写了这两个脚本。

top_level.ext1的转换成效。

file_manager.sh

#!/usr/bin/bash
file='resolve_path.pl'
basedir='/this/is/the/abs/dir/path'

run_perl(){
    echo -e "\n File getting modified: $1"
    cp $1 tmp.in
    perl $file 
    mv tmp.out $1
    rm tmp.in
}

find $basedir -type f |while read inputfile
do 
    run_perl $inputfile
done

resolve_path.pl

#!/usr/bin/perl
use strict;
use warnings;
use Data::Dumper;
use 5.010;
use Switch;

#******************************************************
#       Set-up Directory And Input/Output File Names
#******************************************************
our $in_file  = glob('tmp.in');
my $out_file1 = 'tmp.out';
print "Input file: $in_file\n";

#************************************
#       Local and Global Variables
#*************************************
my $current_path = "/this/is/the/abs/dir/path";
my $temp_path = $current_path;

#************************************
#       Open Read and Write File
#************************************
open(READ, $in_file) || die "cannot open $in_file";
open(WRITE, ">$out_file1") || die "cannot open $out_file1";


#******************************************************
#       Read The Input [*.out] File Line By Line
#******************************************************
while (<READ>) {
    if(/^(\.\.\/){1,}(\w+\/)*(\w+).(\w+)/){
      my $file_name = $3;
        my $file_ext  = $4;

        my @count = ($_ =~ /\.\.\//g);
        my $cnt = @count;

        my @prev_dir = ($_ =~ /\w+\//g);
        my $prev_dir_cnt = @prev_dir;
        my $file_prev_dir = join('', @prev_dir);

        $temp_path = $current_path;
        for(my $i=0; $i<$cnt; $i++){
            if($temp_path =~m/(\/.*)\/\w+/){
                $temp_path = $1;
            }
        }

        print WRITE "$temp_path"."\/"."$file_prev_dir"."$file_name"."\."."$file_ext"."\n";

    } else {
        print WRITE "$_";
    }
}

我面临的问题:

  1. top_level.ext2&amp; DIR/inner_level.ext2 因为我的Perl脚本没有正确解析../ es(即 cc_include+=-I即将开始)。

  2. 从相对路径到绝对路径的转换不起作用 适用于DIR/inner_level.ext1并且错误的路径正在获得 追加。

  3. 如果有人可以在我的脚本中建议预期的更改来解决上述两个问题,那将会很有帮助。

1 个答案:

答案 0 :(得分:3)

为什么这两个脚本?那效率很低。

Perl完全能够检索文件列表,并具有简化该过程的模块以及用于解析和更改路径的模块。

File::Find - Traverse a directory tree.

File::Find::Rule - Alternative interface to File::Find

File::Basename - Parse file paths into directory, filename and suffix.

File::Spec - portably perform operations on file names