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6ec22bc755
allowing a hierarchy of caches, by using only one directory for each cache, and by putting only one command in the PATH. - scripts/dsv: new and improved data sheet viewer (successor of gta02-core's dsv) - Makefile: added "dsv" target to update the bookshelf - ds/INFO, components/INFO, modules/INFO: ds/INFO moved to BOOKSHELF - components/INFO, modules/INFO: renamed "D" tag to "N", for consistency with BOOKSHELF - BOOKSHELF: changed "stdpass" URL to the actual PDF
152 lines
2.5 KiB
Bash
Executable File
152 lines
2.5 KiB
Bash
Executable File
#!/bin/sh
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#
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# dsv - Improved data sheet viewer
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#
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#
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# Theory of operation:
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#
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# We download data sheets from the Internet into local caches and provide a
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# quick access mechanism for viewing the data sheets. A cache is a directory
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# called .dsv/. Caches can be hierarchical. "dsv setup" generates a cache in
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# the local directory. "dsv <component>" and "dsv ls" search the hierarchy,
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# starting with the current directory.
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#
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# Caches contain two types of files: dsv-<ref> is the name or alias with
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# which a data sheet is referenced. <ref>-<filename> is the actual data
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# sheet, with <filename> being the name of the file we downloaded.
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#
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DSV_DIR=.dsv
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usage()
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{
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echo "usage: $0 <component>" 2>&1
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echo " $0 help" 2>&1
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echo " $0 [ls]" 2>&1
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echo " $0 setup <info-file> .." 2>&1
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exit 1
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}
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up()
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{
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old="`pwd`"
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cd ..
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new="`pwd`"
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[ "$old" != "$new" ]
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}
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flush()
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{
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[ -z "$name" ] && return
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if [ -z "$url" ]; then
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echo "$name: no URL" 2>&1
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exit 1
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fi
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ds="$name-`basename "$url"`"
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mkdir -p $DSV_DIR
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if [ ! -r "$DSV_DIR/$ds" ]; then
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wget -nv -O "$DSV_DIR/$ds" "$url"
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# @@@ should handle error
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fi
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for n in $name $alias; do
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echo "$ds" >$DSV_DIR/dsv-$n
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done
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name=
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alias=
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url=
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}
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set_value()
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{
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case "$tag" in
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N:|n:) flush
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name="$value";;
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A:|a:) alias="$alias $value";;
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D:|d:) url="$value";;
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"")
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;; # first iteration
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*) echo "unrecognized tag \"$tag\"" 2>&1
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exit 1;;
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esac
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value=
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}
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eof()
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{
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flush
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tag=
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}
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setup()
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{
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for n in "$@"; do
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if [ ! -r "$n" ]; then
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echo "$n: not found" 2>&1
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continue
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fi
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while read line; do
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[ "$line" = "${line###}" ] || continue
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tmp=`echo "$line" | awk '/^[^\t ]/ { print $1 }'`
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tail="`echo "$line" | sed 's/^[^\t ]*[\t ]*//'`"
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if [ -z "$tmp" ]; then
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[ -z "$tail" ] || value="$value $tail"
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else
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set_value
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tag=$tmp
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value="$tail"
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fi
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done <"$n"
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set_value
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eof
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done
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}
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list()
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{
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while true; do
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if [ -d $DSV_DIR ]; then
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ls -1 $DSV_DIR | sed 's/^dsv-//p;d'
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fi
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up || break
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done | sort | uniq | column
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}
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search()
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{
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while true; do
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if [ -d $DSV_DIR ]; then
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if [ -r "$DSV_DIR/dsv-$1" ]; then
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file="`cat $DSV_DIR/dsv-$1`"
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if [ ! -r "$DSV_DIR/$file" ]; then
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echo "$1 -> $file: does not exist" 2>&1
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exit 1
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fi
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xpdf "$DSV_DIR/$file"
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exit
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fi
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fi
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if ! up; then
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echo "no data sheet found for \"$1\"" 2>&1
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exit 1
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fi
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done
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}
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case "$1" in
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help|-*) usage;;
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""|ls) list;;
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setup) shift
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setup "$@";;
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*) search "$@";;
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esac
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