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Add script for package description complexity extraction #743

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Add script for package description complexity extraction #743

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48 changes: 48 additions & 0 deletions scripts/time-complexities/from-cabal.sh
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Original file line number Diff line number Diff line change
@@ -0,0 +1,48 @@
#! /usr/bin/env sh

set -e

export LC_COLLATE=C LC_CTYPE=C

header_fields_re="^ +\\| *$(printf '%s *\\| *' \
'Resource' \
'Operation' \
'Merge policy' \
'Merge schedule' \
'Worst-case disk I\\\/O complexity'
)\$"

printf '%s\n' 'Resource,Operation,Merge policy,Merge schedule,Worst-case disk I\\\/O complexity'

sed -E -e '
# Drop everything from the beginning to the header fields
1,/'"$header_fields_re"'/ d
# Drop everything after the table
/^ *$/,$ d
# Drop separating lines
/^ +\+([=-]+\+)* *$/ d
# Switch to delimiting by commas
s/ *\| */,/g
# Remove initial comma
s/^,//
# Remove final comma
s/,$//
# Remove escaping of slashes
s/\\\//\//g
# Remove (leading) occurrences of “N/A”
s/(^|,)N\/A/\1/g
# Remove monospace and inline math markup
s/@|\\\(|\\\)//g
# Fill empty “Resource” field with previous content
/^,/ {
G
s/(.*)\n([^,]*).*/\2\1/
}
# Fill empty “Operation” field with previous content
/^[^,]*,,/ {
G
s/([^,]*,)(.*)\n[^,]*,([^,]*).*/\1\3\2/
}
# Store the current output line
h
' "$@"