#!/bin/sh -e # # # DASHT-QUERY-EXEC 1 2020-05-16 2.4.0 # # ## NAME # # dasht-query-exec - searches a [Dash] docset's SQLite3 database file # # ## SYNOPSIS # # `dasht-query-exec` *PATTERN* *DATABASE* [*OPTIONS\_FOR\_SQLITE3*...] # # ## DESCRIPTION # # Searches for *PATTERN* in *DATABASE*, which is an SQLite3 database file # located inside a [Dash] docset at `/Contents/Resources/docSet.dsidx`, while # passing the optional *OPTIONS\_FOR\_SQLITE3* arguments down to sqlite3(1). # # If *PATTERN* is empty or solely consists of unescaped wildcard characters, # topics having distinct leading characters are returned from the *DATABASE*. # # ### Searching # # SQL LIKE wildcard characters in *PATTERN* can be escaped with a backslash. # For example, `\%` and `\_` are escaped, whereas `%` and `_` are not escaped. # # ## SEE ALSO # # sqlite3(1), dasht-query-line(1), dasht(1), [Dash] # # [Dash]: https://kapeli.com/dash # [Zeal]: https://zealdocs.org # # ## AUTHOR # # Written in 2016 by Suraj N. Kurapati # Distributed under the terms of the ISC license (refer to README file). # # This particular script contains SQL queries that were derived from [Zeal], # which is licensed under the GNU General Public License. Refer to the body # of this script for the terms and conditions that govern those SQL queries. test $# -ge 2 pattern=$1 database=$2 shift 2 test -f "$database" # escape SQL single quotes by doubling them pattern=$(echo "$pattern" | sed "s/'/&&/g") #\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ # _ _ ____ ____ _ _ # | |__ ___ __ _(_)_ __ / ___| _ \| | ___ ___ __| | ___ # | '_ \ / _ \/ _` | | '_ \ | | _| |_) | | / __/ _ \ / _` |/ _ \ # | |_) | __/ (_| | | | | | | |_| | __/| |___ | (_| (_) | (_| | __/ # |_.__/ \___|\__, |_|_| |_| \____|_| |_____| \___\___/ \__,_|\___| # |___/ # # The following SQL queries were derived from snippets found at this URL: # # https://github.com/zealdocs/zeal/blob/c6d4bab8bce62d39ceaec7eb853d12ca9c43a361/src/registry/docset.cpp#L268-L283 # # The file at that URL is distributed under a different software license: # # Copyright (C) 2015 Oleg Shparber # Copyright (C) 2013-2014 Jerzy Kozera # Contact: http://zealdocs.org/contact.html # # This file is part of Zeal. # # Zeal is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # Zeal is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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Disclaimer of Warranty. # # THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY # APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT # HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY # OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR # PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM # IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF # ALL NECESSARY SERVICING, REPAIR OR CORRECTION. # # 16. 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Interpretation of Sections 15 and 16. # # If the disclaimer of warranty and limitation of liability provided # above cannot be given local legal effect according to their terms, # reviewing courts shall apply local law that most closely approximates # an absolute waiver of all civil liability in connection with the # Program, unless a warranty or assumption of liability accompanies a # copy of the Program in return for a fee. # searchIndex_topic=name searchIndex_query=" SELECT name AS name, type AS type, path AS url FROM searchIndex " ztoken_topic=ztokenname ztoken_query=" SELECT ztokenname AS name, ztypename AS type, zpath || ifnull('#' || nullif(zanchor, ''), '') AS url FROM ztoken JOIN ztokenmetainformation ON ztokenmetainformation.z_pk = ztoken.zmetainformation JOIN zfilepath ON zfilepath.z_pk = ztokenmetainformation.zfile JOIN ztokentype ON ztokentype.z_pk = ztoken.ztokentype " # _ __ ____ ____ _ _ # ___ _ __ __| | ___ / _| / ___| _ \| | ___ ___ __| | ___ # / _ \ '_ \ / _` | / _ \| |_ | | _| |_) | | / __/ _ \ / _` |/ _ \ # | __/ | | | (_| | | (_) | _| | |_| | __/| |___ | (_| (_) | (_| | __/ # \___|_| |_|\__,_| \___/|_| \____|_| |_____| \___\___/ \__,_|\___| # #\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ if sqlite3 "$database" .tables | grep -F -q searchIndex; then topic=$searchIndex_topic query=$searchIndex_query else topic=$ztoken_topic query=$ztoken_query fi if echo "$pattern" | tr -d '%_' | grep -q . ; then # something particular was searched; fetch first 100 matching topics where="WHERE $topic LIKE '$pattern' ESCAPE '\\'" group= limit='LIMIT 100' else # nothing particular was searched; group topics by leading character query=$(echo "$query" | awk ' # min() gets FIRST topic from each group; else we get the LAST one $1 == "SELECT" && $3 == "AS" { $2 = "min(" $2 " COLLATE NOCASE)" } { print } ') where= group="GROUP BY substr($topic,1,1)" limit= fi order="ORDER BY $topic COLLATE NOCASE" query="$query $where $group $order $limit ;" exec sqlite3 "$@" "$database" "$query"