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|
#!/bin/sh
assume_yes=0
verbose=0
die ()
{
# always print errors
if [ "$verbose" -eq 1 ] || echo "$1" | grep -q "^E:"
then
echo "$1" >&2
fi
}
help ()
{
local verbose=1
die "ladd [OPTION [ARG]...] [FILE]
-c CATEGORY
-d DESCRIPTION
-f FILE
-h display help
-l LINK
-v verbose
-y assume 'yes'"
}
alias shiftt='
if [ $# -gt 0 ]
then
shift
else
die "E: No argument provided."
exit 1
fi'
ftest ()
{
if [ ! -f "$1" ]; then
die "E: '$1' not found."
exit 1
fi
}
# Main execution
if [ $# -eq 0 ]
then
help
exit
fi
while [ $# -ne 0 ]
do
case "$1" in
'-c')
shiftt
category="$(echo "$1" | tr '[:lower:]' '[:upper:]')"
die "I: category -> '$category'"
shiftt
;;
'-d')
shiftt
description="$1"
die "I: description -> '$description'"
shiftt
;;
'-f')
shiftt
test -n "$1" &&
ftest "$1"
file="$1"
shiftt
die "I: file -> '$file'"
;;
'-l')
shiftt
link="$1"
die "I: link -> '$link'"
shiftt
;;
'-v')
verbose=1
die "I: verbose -> $verbose"
shiftt
;;
'-y')
assume_yes=1
die "I: assume_yes -> $assume_yes"
shiftt
;;
*)
if [ ! "$file" ]
then
ftest "$1"
file="$1"
die "I: file -> '$file'"
shiftt
else
die "E: not a valid argument."
help
exit 1
fi
;;
esac
done
# Tests
# Check on file and/or link
if [ -z "$file" ] || [ -z "$link" ]
then
die "E: no file and/or link supplied."
exit 1
fi
# Check on valid category
categories="$(pup -f "$file" -p 'h2 text{}' |
tr '\n' ',' | sed 's/,$//')"
die ""
die "categories: $categories"
if ! echo "$categories" | grep -q "$category"
then
die "E: '$category' is not a valid category."
fi
# Check on empty values
for var in category description
do
eval value=\$$var
if [ -z "$value" ]
then
die "W: $var is empty"
if [ "$assume_yes" -eq 0 ]
then
die "W: are you sure you want to proceed? (Y/n)"
echo -n ">" >&2
read input
test "$input" = "n" &&
exit 1
fi
eval $var="'UNDEFINED'"
die "I: $var -> $(eval echo "\$$var")"
fi
done
# Checks if the link has already been added
if grep -q "$link" "$file"
then
die "E: link already in $file"
exit 1
fi
# constructing the tag
tag="<li><a href=\"$link\">$link</a> - $description</li>"
die "tag: $tag"
die "I: appending tag"
# use grep line numbers to add link after match of the category header
# header will have an <ul> element this one is used with -A 1 | tail -1
sed -i "$(grep -n "<h2.*$category" -A 1 "$file" |
tail -n 1 |
cut -f 1 -d '-')a $tag" "$file"
|
