commit e371bfddee630f242313e6d36d5c541c2e4af78a
parent b00b720b0d23cdcc978729b8ea254e740ce86d1e
Author: Jacob R. Edwards <n/a>
Date: Sun, 4 Dec 2022 20:50:37 -0600
Add a read mode to the tag script
When in this mode, it will display the contents of the given tagfiles
instead of append names from the standard input to them.
Diffstat:
| M | local/bin/bin/tag | | | 64 | ++++++++++++++++++++++++++++++++++++++++++++-------------------- |
1 file changed, 44 insertions(+), 20 deletions(-)
diff --git a/local/bin/bin/tag b/local/bin/bin/tag
@@ -2,19 +2,23 @@
# Copyright 2022 Jacob R. Edwards
# Filesystem tagging system
#
-# Each name from the standard input (made relative the current
-# directory or base (set with -b)) is appended to the given tagfiles
-# if they don't contain them already. Tagfiles are paths relative
-# to the current directory unless a tag directory is given (-t).
+# In write mode, each name from the standard input (made relative to
+# the current directory or base (set with -b)) is appended to the
+# given tagfiles if they don't contain them already. Tagfiles are
+# paths relative to the current directory unless a tag directory is
+# given (-t).
#
-# In automatic mode (-a), both the tag and base directories are
-# filled in automatically. To find the tag directory, the directory
-# 'tags' is recursively searched for in each parent directory. The
-# base directory is generated by getting the parent directory of the
-# tags directory.
+# Given the automatic flag (-a), the script attempts to resolve the
+# tags and base directories if they are not set. If base is defined,
+# tags is gotten using that--otherwise the 'tags' directory is searched
+# for in every parent directory of the current directory. The base
+# is generated by getting the dirname(1) of the tags directory.
#
-# Raw mode (-r) does not alter input in any way and is suitable for
-# tagging things other than files.
+# In raw mode (-r), the tagged information is not altered in any way
+# and is suitable for tagging things other than files.
+#
+# In read mode (-p), names are not read from the standard input and
+# instead the given tagfiles are printed.
error() {
echo "error: $1" 1>&2
@@ -25,7 +29,7 @@ usage() {
{
test $# -gt 0 &&
echo "error: $1"
- echo 'usage: tag [-ar] [-b base] [-t tags] tagfile [...]'
+ echo 'usage: tag [-arp] [-b base] [-t tags] tagfile [...]'
} 1>&2
exit 1
}
@@ -41,22 +45,33 @@ findtags() {
echo "$dir"/tags
}
+base() (
+ test "$base" &&
+ cd "$base"
+ "$@"
+)
+
rebase() (
- root | (test "$base" && cd "$base"; unroot) | awk '{
+ root | base unroot | awk '{
if (/^\//)
printf "Unable to rebase '%s' (passing as is)\n", $0 > "/dev/stderr"
print
}'
)
-add() (
+tags() (
test "$tags" &&
- cd "$tags"
- addnotin "$@"
+ cd "$tags"
+ "$@"
)
+add() {
+ tags addnotin "$@"
+}
+
auto=false
raw=false
+read=false
while test $# -gt 0
do
case "$1" in
@@ -64,6 +79,8 @@ do
auto=true ;;
(-r)
raw=true ;;
+ (-p)
+ read=true ;;
(-b)
base="$2"
shift ;;
@@ -99,9 +116,16 @@ then
base="$(dirname "$tags")"
fi
-if $raw
-then
- add "$@"
+if $read; then
+ if $raw; then
+ tags cat "$@"
+ else
+ tags cat "$@" | base root
+ fi
else
- rebase | add "$@"
+ if $raw; then
+ add "$@"
+ else
+ rebase | add "$@"
+ fi
fi
