111 lines
2.8 KiB
Bash
Executable File
111 lines
2.8 KiB
Bash
Executable File
#!/bin/bash
|
|
# Compiles a "magic" CSV file into a normal CSV
|
|
#
|
|
# Copyright (C) 2014-2019 Ryan Specialty Group, LLC.
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
# For format of CSVMs, see `csvm-expand'.
|
|
#
|
|
# To disable sorting of CSVM output, use the `!NOSORT' directive before the
|
|
# header line.
|
|
##
|
|
|
|
# account for symlinks, since historically this script lives in a different
|
|
# directory and has been symlinked for compatibility
|
|
declare -r mypath=$( dirname "$( readlink -f "$0" )" )
|
|
|
|
|
|
# Generate -k arguments for GNU sort given a CSV header
|
|
#
|
|
# The generated arguments will be of the form -k1,1n ... -kl,ln, where `l'
|
|
# is the total number of header entries.
|
|
#
|
|
# For example, given this header:
|
|
# foo, bar, baz
|
|
# the output would be:
|
|
# -k1,1n -k2,2n -k3,3n
|
|
sort-key-args()
|
|
{
|
|
local -r header="${1?Missing CSV header}"
|
|
|
|
local -i i=0
|
|
|
|
# generate -ki,in for each column (notice that a trailing
|
|
# comma is added to the header because of the read delimiter)
|
|
while read -d,; do
|
|
echo -n "-k$((++i)),${i}n "
|
|
done <<< "$header,"
|
|
}
|
|
|
|
|
|
# Sort every column of CSV
|
|
#
|
|
# The columns will all be sorted left-to-right. The header is left in place
|
|
# as the first row.
|
|
csv-sort()
|
|
{
|
|
# the first line of the expanded CSVM is the CSV header
|
|
local header; read -r header
|
|
local -r keys=$( sort-key-args "$header" )
|
|
|
|
# all remaining input (which is now sans header) is sorted
|
|
echo "$header"
|
|
sort -t, $keys -
|
|
}
|
|
|
|
|
|
# Output usage information
|
|
#
|
|
# Kudos to you if you understand the little Easter egg.
|
|
usage()
|
|
{
|
|
cat <<EOU
|
|
Usage: $0 [FILE]
|
|
Expand CSVM represented by FILE or stdin into a CSV
|
|
|
|
The columns of the expanded CSV will be automatically sorted
|
|
left-to-right. To inhibit this behavior, use the \`!NOSORT'
|
|
directive anywhere before the header line in the source CSVM.
|
|
|
|
Options:
|
|
--help Output usage information.
|
|
|
|
This program has magic CSV powers.
|
|
EOU
|
|
|
|
exit 64 # EX_USAGE
|
|
}
|
|
|
|
|
|
# Sort CSV rows left-to-right unless the `!NOSORT' directive is provided
|
|
main()
|
|
{
|
|
test ! "$1" == --help || usage
|
|
|
|
"$mypath/csvm-expand" "$@" \
|
|
| {
|
|
local directives; read -r directives
|
|
|
|
# ignore sorting if given NOSORT directive
|
|
if [[ "$directives" =~ NOSORT ]]; then
|
|
cat
|
|
else
|
|
csv-sort "$sort"
|
|
fi
|
|
}
|
|
}
|
|
|
|
main "$@"
|