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wikiman.sh
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wikiman.sh
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#!/bin/sh
# BSD compatibility: Use GNU find and awk
conf_find='find'
"$conf_find" --help >/dev/null 2>/dev/null || \
conf_find='gfind'
conf_awk='awk'
"$conf_awk" --help >/dev/null 2>/dev/null || \
conf_awk='gawk'
conf_sort='sort'
echo | "$conf_sort" -V >/dev/null 2>/dev/null || \
conf_sort='gsort'
export conf_find
export conf_awk
export conf_sort
tui_preview() {
command="$(echo "$@" | "$conf_awk" -F '\t' \
"{
if (\$3==\"man\") {
if (NF==4) {
printf(\"man %s\",\$4);
} else {
sec=\$1
gsub(/.*\(/,\"\",sec);
gsub(/\).*$/,\"\",sec);
gsub(/ .*$/,\"\",\$1);
printf(\"man -S %s -L %s %s\n\",sec,\$2,\$1);
}
} else {
gsub(\"\\\"\",\"\\\\\\\"\",\$NF);
printf(\"w3m \\\"%s\\\"\n\",\$NF);
}
};"
)"
eval "$command"
}
if printenv WIKIMAN_TUI_PREVIEW >/dev/null; then
tui_preview "$@"
exit
fi
init() {
# BSD compatibility: Installation prefix
case "$(dirname "$0")" in
"$HOME/bin"|"$HOME/.local/bin")
conf_sys_usr="$HOME/.local/share";
conf_sys_etc="${XDG_CONFIG_HOME:-"$HOME/.config"}/wikiman";;
'/bin'|'/sbin'|'/usr/bin'|'/usr/sbin')
conf_sys_usr='/usr';
conf_sys_etc='/etc';;
'/usr/local/bin'|'/usr/local/sbin')
conf_sys_usr='/usr/local';
conf_sys_etc='/usr/local/etc';;
*)
case "$(dirname "$(command -v wikiman)")" in
"$HOME/bin"|"$HOME/.local/bin")
echo 'warning: unsupported installation path, using fallback for user install' 1>&2;
conf_sys_usr="$HOME/.local/share";
conf_sys_etc="${XDG_CONFIG_HOME:-"$HOME/.config"}/wikiman";;
'/bin'|'/sbin'|'/usr/bin'|'/usr/sbin')
echo 'warning: unsupported installation path, using fallback for Linux' 1>&2;
conf_sys_usr='/usr';
conf_sys_etc='/etc';;
'/usr/local/bin'|'/usr/local/sbin')
echo 'warning: unsupported installation path, using fallback for BSD' 1>&2;
conf_sys_usr='/usr/local';
conf_sys_etc='/usr/local/etc';;
*)
echo 'error: unsupported installation path - failed to establish fallback' 1>&2;
exit 5;;
esac;;
esac
export conf_sys_usr
export conf_sys_etc
# Configuration variables
conf_version='2.13.2'
config_dir="${XDG_CONFIG_HOME:-"$HOME/.config"}/wikiman"
config_file="$conf_sys_etc/wikiman.conf"
config_file_usr="$config_dir/wikiman.conf"
[ -f "$config_file" -a -r "$config_file" ] || \
config_file=''
[ -f "$config_file_usr" -a -r "$config_file_usr" ] || \
config_file_usr=''
if [ -z "$config_file" -a -z "$config_file_usr" ]; then
echo "warning: configuration file missing, using defaults" 1>&2
else
conf_sources="$(
"$conf_awk" -F '=' "/^[ ,\t]*sources/ {
gsub(\",\",\" \",\$2);
gsub(/#.*/,\"\",\$2);
gsub(/ +/,\" \",\$2);
gsub(/^ /,\"\",\$2);
gsub(/ $/,\"\",\$2);
value = \$2;
}; END { print value }" "$config_file" "$config_file_usr"
)"
conf_fuzzy_finder="$(
"$conf_awk" -F '=' "/^[ ,\t]*fuzzy_finder/ {
gsub(/#.*/,\"\",\$2);
gsub(/[ \t]+/,\"\",\$2);
value = \$2;
}; END { print value }" "$config_file" "$config_file_usr"
)"
conf_quick_search="$(
"$conf_awk" -F '=' "/^[ ,\t]*quick_search/ {
gsub(/#.*/,\"\",\$2);
gsub(/[ \t]+/,\"\",\$2);
value = \$2;
}; END { print value }" "$config_file" "$config_file_usr"
)"
conf_and_operator="$(
"$conf_awk" -F '=' "/^[ ,\t]*and_operator/ {
gsub(/#.*/,\"\",\$2);
gsub(/[ \t]+/,\"\",\$2);
value = \$2;
}; END { print value }" "$config_file" "$config_file_usr"
)"
conf_raw_output="$(
"$conf_awk" -F '=' "/^[ ,\t]*raw_output/ {
gsub(/#.*/,\"\",\$2);
gsub(/[ \t]+/,\"\",\$2);
value = \$2;
}; END { print value }" "$config_file" "$config_file_usr"
)"
conf_man_lang="$(
"$conf_awk" -F '=' "/^[ ,\t]*man_lang/ {
gsub(\",\",\" \",\$2);
gsub(/#.*/,\"\",\$2);
value = \$2;
}; END { print value }" "$config_file" "$config_file_usr"
)"
conf_wiki_lang="$(
"$conf_awk" -F '=' "/^[ ,\t]*wiki_lang/ {
gsub(\",\",\" \",\$2);
gsub(/#.*/,\"\",\$2);
value = \$2;
}; END { print value }" "$config_file" "$config_file_usr"
)"
conf_tui_preview="$(
"$conf_awk" -F '=' "/^[ ,\t]*tui_preview/ {
gsub(/#.*/,\"\",\$2);
gsub(/[ \t]+/,\"\",\$2);
value = \$2;
}; END { print value }" "$config_file" "$config_file_usr"
)"
conf_tui_keep_open="$(
"$conf_awk" -F '=' "/^[ ,\t]*tui_keep_open/ {
gsub(/#.*/,\"\",\$2);
gsub(/[ \t]+/,\"\",\$2);
value = \$2;
}; END { print value }" "$config_file" "$config_file_usr"
)"
conf_tui_source_column="$(
"$conf_awk" -F '=' "/^[ ,\t]*tui_source_column/ {
gsub(/#.*/,\"\",\$2);
gsub(/[ \t]+/,\"\",\$2);
value = \$2;
}; END { print value }" "$config_file" "$config_file_usr"
)"
conf_tui_html="$(
"$conf_awk" -F '=' "/^[ ,\t]*tui_html/ {
gsub(/#.*/,\"\",\$2);
gsub(/[ \t]+/,\"\",\$2);
value = \$2;
}; END { print value }" "$config_file" "$config_file_usr"
)"
fi
# Widgets
widgets_dir="$conf_sys_usr/share/wikiman/widgets"
# Sources
sources_dir="$conf_sys_usr/share/wikiman/sources"
sources_dir_usr="$config_dir/sources"
# Detect source modules
sources="$(
eval "$conf_find $sources_dir_usr $sources_dir -type f 2>/dev/null" | \
"$conf_awk" -F '/' \
"BEGIN {OFS=\"\t\"} {
path = \$0;
name = \$NF;
gsub(/\..*$/,\"\",name);
if (sources[name]==0)
print name, path;
sources[name]++;
};"
)"
if [ -z "$sources" ]; then
echo "error: no sources available" 1>&2
exit 3
fi
modules="$(echo "$sources" | "$conf_awk" -F '\t' "{print \$1}")"
available_sources=""
for mod in $modules; do
module_path="$(echo "$sources" | "$conf_awk" -F '\t' "\$1==\"$mod\" {print \$2}")"
if "$module_path" available; then
available_sources="$available_sources $(basename "$module_path" | cut -d'.' -f1)"
fi
done
# Set configuration variables
conf_sources="${conf_sources:-$available_sources}"
conf_fuzzy_finder="${conf_fuzzy_finder:-fzf}"
conf_quick_search="${conf_quick_search:-false}"
conf_and_operator="${conf_and_operator:-false}"
conf_raw_output="${conf_raw_output:-false}"
conf_man_lang="${conf_man_lang:-en}"
conf_wiki_lang="${conf_wiki_lang:-en}"
conf_tui_preview="${conf_tui_preview:-true}"
conf_tui_keep_open="${conf_tui_keep_open:-false}"
conf_tui_source_column="${conf_tui_source_column:-false}"
conf_tui_html="${conf_tui_html:-w3m}"
export conf_sources
export conf_fuzzy_finder
export conf_quick_search
export conf_and_operator
export conf_raw_output
export conf_man_lang
export conf_wiki_lang
export conf_tui_preview
export conf_tui_keep_open
export conf_tui_source_column
export conf_tui_html
export conf_version
}
combine_results() {
all_results="$(
printf '%s' "$all_results" | \
"$conf_awk" -F '\t' \
"BEGIN {
OFS=\"\t\"
count = 0;
};
NF>0 {
source = \$3;
srcc[source]++;
src[source,srcc[source]] = \$0;
count++;
};
END {
for (s in srcc)
srco[s] = srcc[s];
i = 0;
while (i<count)
for (s in srcc) {
if (srcc[s]>0) {
ind = srco[s]-srcc[s]+1;
print src[s,ind];
srcc[s]--;
i++;
}
}
};"
)"
}
picker_tui() {
if [ "$conf_tui_preview" != 'false' ]; then
preview="--preview 'WIKIMAN_TUI_PREVIEW=1 wikiman {}'"
fi
if [ "$conf_tui_source_column" = 'true' ]; then
source_column='3,'
fi
if [ "$(echo "$conf_man_lang" | wc -w)" = '1' -a \
"$(echo "$conf_wiki_lang" | wc -w)" = '1' ]; then
columns="${source_column}1"
else
columns="${source_column}2,1"
fi
choice="$(
echo "$all_results" | \
eval "$conf_fuzzy_finder --with-nth $columns --delimiter '\t' \
$preview --reverse --preview-window=65%:wrap:border-sharp: --prompt 'wikiman > '"
)"
[ $? -ne 0 ] && return 1
command="$(
echo "$choice" | \
"$conf_awk" -F '\t' "{
if (\$3==\"man\") {
if (NF==4) {
printf(\"man %s\",\$4);
} else {
sec=\$1
gsub(/.*\(/,\"\",sec);
gsub(/\).*$/,\"\",sec);
gsub(/ .*$/,\"\",\$1);
printf(\"man -S %s -L %s %s\n\",sec,\$2,\$1);
}
} else {
gsub(\"\\\"\",\"\\\\\\\"\",\$NF);
printf(\"$conf_tui_html \\\"%s\\\"\n\",\$NF);
}
};"
)"
}
help() {
echo "Usage: wikiman [OPTION]... [KEYWORD]...
Offline search engine for manual pages and distro wikis combined
If no keywords are provided, show all pages.
Options:
-l search language(s)
-s sources to use
-f fuzzy finder to use
-q enable quick search mode
-a enable AND operator mode
-p disable quick result preview
-k keep open after viewing a result
-c show source column
-H viewer for HTML pages
-R print raw output
-S list available sources and exit
-W print widget code for specified shell and exit
-v print version and exit
-h display this help and exit
"
}
sources() {
modules="$(echo "$sources" | "$conf_awk" -F '\t' "{print \$1}")"
if [ "$modules" != '' ]; then
printf '%-10s %5s %6s %s\n' 'NAME' 'STATE' 'PAGES' 'PATH'
fi
for mod in $modules; do
module_path="$(echo "$sources" | "$conf_awk" -F '\t' "\$1==\"$mod\" {print \$2}")"
"$module_path" info
done
}
widget() {
widget_src="$("$conf_find" "$widgets_dir" -name "widget.$1" 2>/dev/null)"
if [ "$widget_src" != '' ]; then
cat "$widget_src"
else
echo "error: widget for '$1' does not exist" 1>&2
exit 128
fi
}
init
while getopts l:s:H:f:W:pqahRSkcv o; do
case $o in
(p) conf_tui_preview='false';;
(H) conf_tui_html="$OPTARG";;
(k) conf_tui_keep_open='true';;
(l) conf_man_lang="$(
echo "$OPTARG" | tr ',-' ' _'
)";
conf_wiki_lang="$(
echo "$OPTARG" | tr ',_' ' -'
)";;
(s) conf_sources="$(
echo "$OPTARG" | tr ',-' ' _'
)";;
(f) conf_fuzzy_finder="$OPTARG";;
(q) conf_quick_search='true';;
(a) conf_and_operator='true';;
(R) conf_raw_output='true';;
(c) conf_tui_source_column='true';;
(W) widget "$OPTARG";
exit;;
(S) sources;
exit;;
(v) echo "$conf_version";
exit;;
(h) help;
exit;;
(*) exit 1;;
esac
done
shift "$((OPTIND - 1))"
# Dependency check
dependencies="man rg w3m $conf_awk $conf_tui_html $conf_fuzzy_finder $conf_find"
for dep in $dependencies; do
command -v "$dep" >/dev/null 2>/dev/null || {
echo "error: missing dependency: cannot find '$dep' executable" 1>&2
exit 127
}
done
# Check if fuzzy finder compatible with used fzf's parameters
case $conf_fuzzy_finder in
'fzf'|'sk');;
*)
echo "error: $conf_fuzzy_finder is not compatible with the paramters used in this script" 1>&2
exit 4;;
esac
if [ $# = 0 ]; then
user_action='list'
else
user_action='search'
query="$*"
rg_query="$(echo "$*" | sed 's/ /\|/g')"
greedy_query="\w*$(echo "$*" | sed 's/ /\\\w\*|\\w\*/g')\w*"
if [ "$conf_and_operator" = 'true' ]; then
rg_query="$(echo "$*" | "$conf_awk" -F ' ' "{for(i=1;i<=NF;i++)printf(\"(?P<p%i>.*%s.*)\",i,\$i)}")"
fi
export query
export rg_query
export greedy_query
fi
for src in $conf_sources; do
module_path="$(echo "$sources" | "$conf_awk" -F '\t' "\$1==\"$src\" {print \$2}")"
if [ -z "$module_path" ]; then
echo "error: source '$src' does not exist" 1>&2
exit 2
fi
parallel_jobs="$(
printf '%s\n%s' "$parallel_jobs" "$module_path $user_action"
)"
done
all_results="$(
echo "$parallel_jobs" | parallel
)"
combine_results
if echo "$all_results" | grep -cve '^\s*$' >/dev/null; then
if [ "$conf_raw_output" != 'false' ]; then
printf 'NAME\tLANG\tSOURCE\tPATH\n'
echo "$all_results"
else
if [ "$conf_tui_keep_open" = 'true' ]; then
while picker_tui; do
eval "$command"
done
else
picker_tui && eval "$command"
fi
fi
else
echo "search: no results for '$*'" 1>&2
exit 255
fi