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| -rw-r--r-- | challenge-103/abigail/README.md | 1 | ||||
| -rw-r--r-- | challenge-103/abigail/bash/ch-2.sh | 62 |
2 files changed, 63 insertions, 0 deletions
diff --git a/challenge-103/abigail/README.md b/challenge-103/abigail/README.md index 9d90314025..69c67fa04e 100644 --- a/challenge-103/abigail/README.md +++ b/challenge-103/abigail/README.md @@ -124,6 +124,7 @@ Output: ### Solutions * [GNU AWK](awk/ch-2.awk) +* [Bash](bash/ch-2.sh) * [C](c/ch-2.c) * [Lua](lua/ch-2.lua) * [Perl](perl/ch-2.pl) diff --git a/challenge-103/abigail/bash/ch-2.sh b/challenge-103/abigail/bash/ch-2.sh new file mode 100644 index 0000000000..e35d48c034 --- /dev/null +++ b/challenge-103/abigail/bash/ch-2.sh @@ -0,0 +1,62 @@ +#!/bin/sh + +# +# See ../README.md +# + +# +# Run as: bash ch-2.sh < input-file +# + +set -f + +# +# Parse input +# +while read start_time current_time file_name +do time_diff=$(((current_time - start_time) * 1000)) + + # + # Read the media file, storing run times and titles + # into two arrays. + # + declare -a run_times + declare -a titles + total_time=0 + + nr_of_tracks=0 + while read track + do + run_time=${track/,*/} + title=${track/[^,]*,/} + run_times[$nr_of_tracks]=$run_time + titles[$nr_of_tracks]=$title + ((nr_of_tracks ++)) + total_time=$((total_time + run_time)) + done < $file_name + + # + # Don't care about full loops played. + # + time_diff=$((time_diff % total_time)) + + # + # Find the right track. + # + for ((i = 0; i < nr_of_tracks; i ++)) + do + if ((time_diff - run_times[i] < 0)) + then echo ${titles[$i]} + time_diff=$((time_diff / 1000)) + hours=$(( time_diff / 3600)) + minutes=$(( (time_diff % 3600) / 60)) + seconds=$(( time_diff % 60)) + if ((hours > 0)) + then printf "%02d:%02d:%02d\n" $hours $minutes $seconds + else printf "%02d:%02d\n" $minutes $seconds + fi + break + else time_diff=$((time_diff - run_times[i])) + fi + done +done |