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git://git.code.sf.net/p/zsh/code
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312 lines
10 KiB
Plaintext
312 lines
10 KiB
Plaintext
#autoload
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# Utility function for in-path completion.
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# Supported arguments are: `-f', `-/', `-g <patterns>', `-J <group>',
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# `-V <group>', `-W paths', `-X explanation', and `-F <ignore>'. All but
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# the last have the same syntax and meaning as for `complist'. The
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# `-F <ignore>' option may be used to give a list of suffixes either by
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# giving the name of an array or literally by giving them in a string
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# surrounded by parentheses. Files with one of the suffixes thus given
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# are treated like files with one of the suffixes in the `fignore' array
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# in normal completion.
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#
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# This function uses the helper functions `_match_test' and `_match_pattern'.
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# First see if we should generate matches for the global matcher in use.
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_match_test _path_files || return
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# Yes, so...
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local nm prepaths str linepath realpath donepath patstr prepath testpath rest
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local tmp1 collect tmp2 suffixes i ignore matchflags opt group sopt pats gopt
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local addpfx addsfx expl
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setopt localoptions nullglob rcexpandparam globdots extendedglob
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unsetopt markdirs globsubst shwordsplit nounset
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prepaths=('')
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ignore=()
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group=()
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sopt='-'
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gopt=''
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pats=()
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addpfx=()
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addsfx=()
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expl=()
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# Get the options.
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while getopts "P:S:W:F:J:V:X:f/g:" opt; do
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case "$opt" in
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P) addpfx=(-P "$OPTARG")
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;;
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S) addsfx=(-S "$OPTARG")
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;;
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W) tmp1="$OPTARG"
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if [[ "$tmp1[1]" = '(' ]]; then
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prepaths=( ${^=tmp1[2,-2]}/ )
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else
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prepaths=( ${(P)=${tmp1}} )
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(( ! $#prepaths )) && prepaths=( ${tmp1}/ )
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fi
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(( ! $#prepaths )) && prepaths=( '' )
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;;
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F) tmp1="$OPTARG"
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if [[ "$tmp1[1]" = '(' ]]; then
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ignore=( ${^=tmp1[2,-2]}/ )
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else
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ignore=( ${(P)${tmp1}} )
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fi
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(( $#ignore )) && ignore=(-F "( $ignore )")
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;;
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[JV]) group=("-$opt" "$OPTARG")
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;;
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X) expl=(-X "$OPTARG")
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;;
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f) sopt="${sopt}f"
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pats=("$pats[@]" '*')
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;;
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/) sopt="${sopt}/"
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pats=("$pats[@]" '*(-/)')
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;;
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g) gopt='-g'
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pats=("$pats[@]" ${=OPTARG})
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;;
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esac
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done
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# If we were given no file selection option, we behave as if we were given
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# a `-f'.
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if [[ "$sopt" = - ]]; then
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if [[ -z "$gopt" ]]; then
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sopt='-f'
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pats=('*')
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else
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unset sopt
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fi
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fi
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# str holds the whole string from the command line with a `*' between
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# the prefix and the suffix.
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str="${PREFIX:q}*${SUFFIX:q}"
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# If the string began with a `~', the quoting turned this into `\~',
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# remove the slash.
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[[ "$str" = \\\~* ]] && str="$str[2,-1]"
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# We will first try normal completion called with `complist', but only if we
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# weren't given a `-F' option.
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if (( ! $#ignore )); then
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# First build an array containing the `-W' option, if there is any and we
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# want to use it. We don't want to use it if the string from the command line
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# is a absolute path or relative to the current directory.
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if [[ -z "$tmp1[1]" || "$str[1]" = [~/] || "$str" = (.|..)/* ]]; then
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tmp1=()
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else
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tmp1=(-W "( $prepaths )")
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fi
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# Now call complist.
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nm=$NMATCHES
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if [[ -z "$gopt" ]]; then
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complist "$addpfx[@]" "$addsfx[@]" "$group[@]" "$expl[@]" "$tmp1[@]" $sopt
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else
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complist "$addpfx[@]" "$addsfx[@]" "$group[@]" "$expl[@]" "$tmp1[@]" $sopt -g "$pats"
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fi
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# If this generated any matches, we don't want to do in-path completion.
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[[ -nmatches nm ]] || return
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# No `-F' option, so we want to use `fignore'.
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ignore=(-F fignore)
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fi
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# Now let's have a closer look at the string to complete.
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if [[ "$str[1]" = \~ ]]; then
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# It begins with `~', so remember anything before the first slash to be able
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# to report it to the completion code. Also get an expanded version of it
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# (in `realpath'), so that we can generate the matches. Then remove that
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# prefix from the string to complete, set `donepath' to build the correct
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# paths and make sure that the loop below is run only once with an empty
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# prefix path by setting `prepaths'.
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linepath="${str%%/*}/"
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eval realpath\=$linepath
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str="${str#*/}"
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donepath=''
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prepaths=( '' )
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else
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# If the string does not start with a `~' we don't remove a prefix from the
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# string.
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liniepath=''
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realpath=''
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if [[ "$str[1]" = / ]]; then
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# If it is a absolut path name, we remove the first slash and put it in
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# `donepath' meaning that we treat it as the path that was already handled.
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# Also, we don't use the paths from `-W'.
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str="$str[2,-1]"
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donepath='/'
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prepaths=( '' )
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else
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# The common case, we just use the string as it is, unless it begins with
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# `./' or `../' in which case we don't use the paths from `-W'.
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[[ "$str" = (.|..)/* ]] && prepaths=( '' )
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donepath=''
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fi
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fi
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# First we skip over all pathname components in `str' which really exist in
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# the file-system, so that `/usr/lib/l<TAB>' doesn't offer you `lib' and
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# `lib5'. Pathname components skipped this way are taken from `str' and added
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# to `donepath'.
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while [[ "$str" = */* ]] do
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[[ -e "$realpath$donepath${str%%/*}" ]] || break
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donepath="$donepath${str%%/*}/"
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str="${str#*/}"
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done
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# Now build the glob pattern by calling `_match_pattern'.
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patstr="$str"
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matchflags=""
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_match_pattern _path_files patstr matchflags
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# We almost expect the pattern to have changed `..' into `*.*.', `/.' into
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# `/*.', and probably to contain two or more consecutive `*'s. Since these
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# have special meaning for globbing, we remove them. But before that, we
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# add the pattern for matching any characters before a slash.
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patstr="$patstr:gs-/-*/-:gs/*.*.//:gs-/*.-/.-:gs/**/*/"
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# Finally, generate the matches. First we loop over all the paths from `-W'.
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# Note that in this loop `str' is used as a modifyable version of `patstr'
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# and `testpath' is a modifyable version of `donepath'.
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for prepath in "$prepaths[@]"; do
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str="$patstr"
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testpath="$donepath"
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# The second loop tests the components of the path in `str' to get the
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# possible matches.
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while [[ "$str" = */* ]] do
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# `rest' is the pathname after the first slash that is left. In `tmp1'
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# we get the globbing matches for the pathname component currently
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# handled.
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rest="${str#*/}"
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tmp1="${prepath}${realpath}${testpath}${~matchflags}${str%%/*}(-/)"
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tmp1=( $~tmp1 )
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if [[ $#tmp1 -eq 0 ]]; then
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# If this didn't produce any matches, we don't need to test this path
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# any further, so continue with the next `-W' path, if any.
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continue 2
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elif [[ $#tmp1 -gt 1 ]]; then
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# If it produced more than one match, we want to remove those which
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# don't have possible following pathname components matching the
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# rest of the string we are completing. (The case with only one
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# match is handled below.)
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# In `collect' we will collect those of the produced pathnames that
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# have a matching possible path-suffix. In `suffixes' we build an
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# array containing strings build from the rest of the string to
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# complete and the glob patterns we were given as arguments.
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collect=()
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suffixes=( $rest$^pats )
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suffixes=( "${(@)suffixes:gs.**.*.}" )
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# In the loop the prefixes from the `tmp1' array produced above and
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# the suffixes we just built are used to produce possible matches
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# via globbing.
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for i in $tmp1; do
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tmp2=( ${~i}/${~matchflags}${~suffixes} )
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[[ $#tmp2 -ne 0 ]] && collect=( $collect $i )
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done
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# If this test showed that none of the matches from the glob in `tmp1'
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# has a possible sub-path matching what's on the line, we give up and
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# continue with the next `-W' path.
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if [[ $#collect -eq 0 ]]; then
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continue 2
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elif [[ $#collect -ne 1 ]]; then
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# If we have more than one possible match, this means that the
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# pathname component currently handled is ambiguous, so we give
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# it to the completion code.
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# First we build the full path prefix in `tmp1'.
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tmp1="$prepath$realpath$testpath"
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# Now produce all matching pathnames in `collect'.
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collect=( ${~collect}/${~matchflags}${~suffixes} )
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# And then remove the common path prefix from all these matches.
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collect=( ${collect#$tmp1} )
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# Finally, we add all these matches with the common (unexpanded)
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# pathprefix (the `-p' option), the path-prefix (the `-W' option)
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# to allow the completion code to test file type, and the path-
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# suffix (the `-s' option). We also tell the completion code that
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# these are file names and that `fignore' should be used as usual
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# (the `-f' and `-F' options).
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for i in $collect; do
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compadd "$addpfx[@]" "$addsfx[@]" "$group[@]" "$expl[@]" -p "$linepath$testpath" -W "$tmp1" -s "/${i#*/}" -f "$ignore[@]" - "${i%%/*}"
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done
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# We have just finished handling all the matches from above, so we
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# can continue with the next `-W' path.
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continue 2
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fi
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# We reach this point if only one of the path prefixes in `tmp1'
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# has a existing path-suffix matching the string from the line.
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# In this case we accept this match and continue with the next
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# path-name component.
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tmp1=( "$collect[1]" )
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fi
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# This is also reached if the first globbing produced only one match
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# in this case we just continue with the next pathname component, too.
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tmp1="$tmp1[1]"
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testpath="$testpath${tmp1##*/}/"
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str="$rest"
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done
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# We are here if all pathname components except the last one (which is still
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# not tested) are unambiguous. So we add matches with the full path prefix,
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# no path suffix, the `-W' we are currently handling, all the matches we
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# can produce in this directory, if any.
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tmp1="$prepath$realpath$testpath"
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suffixes=( $str$^pats )
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suffixes=( "${(@)suffixes:gs.**.*.}" )
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tmp2=( ${~tmp1}${~matchflags}${~suffixes} )
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if [[ $#tmp2 -eq 0 && "$sopt" = */* ]]; then
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[[ "$testpath[-1]" = / ]] && testpath="$testpath[1,-2]"
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compadd "$addpfx[@]" "$addsfx[@]" "$group[@]" "$expl[@]" -f - "$linepath$testpath"
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else
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compadd "$addpfx[@]" "$addsfx[@]" "$group[@]" "$expl[@]" -p "$linepath$testpath" -W "$prepath$realpath$testpath" -f "$ignore[@]" - ${(@)tmp2#$tmp1}
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fi
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done
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