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dsv/dsv: record source URL in dsv-* file; new option -u to show it

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This adds a second line to the dsv-* files, containing the source URL.
dsv -u <word> shows the URL.

Compatibility with older versions of dsv:

- "dsv -u" will fail with an error if running on an old data sheet
  database, while the rest of dsv works as before

- to update the database, run the usual "dsv setup ..."
  (most dsv-using projects have a "make dsv" target for this)

- older version of dsv will not be able to display data sheets or paths
  if run with an updated database
This commit is contained in:
Werner Almesberger 2012-12-21 17:33:23 -03:00
parent 24160ddd57
commit 676c6a2715
1 changed files with 20 additions and 3 deletions
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23
dsv/dsv
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@ -30,12 +30,13 @@ DSV_DIR=.dsv
usage() usage()
{ {
echo "usage: $0 [-p] <component>" 2>&1 echo "usage: $0 [-p|-u] <component>" 2>&1
echo " $0 help" 2>&1 echo " $0 help" 2>&1
echo " $0 [ls]" 2>&1 echo " $0 [ls]" 2>&1
echo " $0 setup <info-file> ..." 2>&1 echo " $0 setup <info-file> ..." 2>&1
echo 2>&1 echo 2>&1
echo " -p show the path instead of displaying the file " 2>&1 echo " -p show the path instead of displaying the file " 2>&1
echo " -u show source URL instead of displaying the file " 2>&1
exit 1 exit 1
} }
@ -78,7 +79,7 @@ flush()
fi fi
eval for n in $name $alias\; do \ eval for n in $name $alias\; do \
'nm=`echo "$n" | sed "s/%/%25/g;s|/|%2F|g"`;' \ 'nm=`echo "$n" | sed "s/%/%25/g;s|/|%2F|g"`;' \
echo '"$ds"' '>$DSV_DIR/dsv-$nm'\; \ \{ echo '"$ds"'\; echo '"$url"'\; \} '>$DSV_DIR/dsv-$nm'\; \
done done
name= name=
alias= alias=
@ -157,7 +158,18 @@ search()
if [ -d $DSV_DIR ]; then if [ -d $DSV_DIR ]; then
name=`echo "$1" | sed 's/%/%25/g;s|/|%2F|g'` name=`echo "$1" | sed 's/%/%25/g;s|/|%2F|g'`
if [ -r "$DSV_DIR/dsv-$name" ]; then if [ -r "$DSV_DIR/dsv-$name" ]; then
file=`cat "$DSV_DIR/dsv-$name"` if $show_url; then
url=`sed 1d "$DSV_DIR/dsv-$name"`
if [ "$url" ]; then
echo "$url"
exit
else
echo "$DSV_DIR/dsv-$name" \
"does not contain an URL - please regenerate" 1>&2
exit 1
fi
fi
file=`sed 1q "$DSV_DIR/dsv-$name"`
if [ ! -r "$DSV_DIR/$file" ]; then if [ ! -r "$DSV_DIR/$file" ]; then
echo "$1 -> $file: does not exist" 2>&1 echo "$1 -> $file: does not exist" 2>&1
exit 1 exit 1
@ -179,10 +191,15 @@ search()
path=false path=false
show_url=false
if [ "$1" = -p ]; then if [ "$1" = -p ]; then
path=true path=true
shift shift
fi fi
if [ "$1" = -u ]; then
show_url=true
shift
fi
case "$1" in case "$1" in
help|-*) usage;; help|-*) usage;;