Commit | Line | Data |
---|---|---|
bf9fed34 SBS |
1 | #!/bin/bash |
2 | ||
3 | read_stdin() { | |
4 | # Desc: Consumes stdin; outputs as stdout lines | |
5 | # Input: stdin (consumes) | |
6 | # Output: stdout (newline delimited) | |
7 | # return 0 stdin read | |
8 | # return 1 stdin not present | |
9 | # Example: printf "foo\nbar\n" | read_stdin | |
10 | # Depends: GNU bash (version 5.1.16), GNU Coreutils 8.32 (cat) | |
11 | # Version: 0.1.1 | |
12 | # Attrib: Steven Baltakatei Sandoval (2024-01-29). reboil.com | |
13 | local input_stdin output; | |
14 | ||
15 | # Store stdin | |
16 | if [[ -p /dev/stdin ]]; then | |
17 | input_stdin="$(cat -)" || { | |
18 | echo "FATAL:Error reading stdin." 1>&2; return 1; }; | |
19 | else | |
20 | return 1; | |
21 | fi; | |
22 | ||
23 | # Store as output array elements | |
24 | ## Read in stdin | |
25 | if [[ -n $input_stdin ]]; then | |
26 | while read -r line; do | |
27 | output+=("$line"); | |
28 | done < <(printf "%s\n" "$input_stdin") || { | |
29 | echo "FATAL:Error parsing stdin."; return 1; }; | |
30 | fi; | |
31 | ||
32 | # Print to stdout | |
33 | printf "%s\n" "${output[@]}"; | |
34 | ||
35 | return 0; | |
36 | }; # read stdin to stdout lines | |
37 | remove_leading_zeroes() { | |
38 | # Desc: Removes leading zeroes from lines | |
39 | # Input: stdin | |
40 | # Output: stdout | |
41 | # Depends: BK-2020-03 read_stdin() | |
42 | # Version: 0.0.1 | |
43 | while read -r line; do | |
44 | printf "%s\n" "$line" | sed -E -e 's/(^0*)([0-9].*)/\2/'; | |
45 | done < <(read_stdin); | |
46 | }; | |
47 | ||
48 | printf "00000.jpg\n0001.jpg\n2.jpg\n000003.jpg\n0010.jpg\n"; | |
49 | printf "========================\n"; | |
50 | printf "00000.jpg\n0001.jpg\n2.jpg\n000003.jpg\n0010.jpg\n" | remove_leading_zeroes; | |
51 |