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sql-hint.js
246 lines
| 1 | // CodeMirror, copyright (c) by Marijn Haverbeke and others |
| 2 | // Distributed under an MIT license: http://codemirror.net/LICENSE |
| 3 | |
| 4 | (function(mod) { |
| 5 | if (typeof exports == "object" && typeof module == "object") // CommonJS |
| 6 | mod(require("../../lib/codemirror"), require("../../mode/sql/sql")); |
| 7 | else if (typeof define == "function" && define.amd) // AMD |
| 8 | define(["../../lib/codemirror", "../../mode/sql/sql"], mod); |
| 9 | else // Plain browser env |
| 10 | mod(CodeMirror); |
| 11 | })(function(CodeMirror) { |
| 12 | "use strict"; |
| 13 | |
| 14 | var tables; |
| 15 | var defaultTable; |
| 16 | var keywords; |
| 17 | var CONS = { |
| 18 | QUERY_DIV: ";", |
| 19 | ALIAS_KEYWORD: "AS" |
| 20 | }; |
| 21 | var Pos = CodeMirror.Pos; |
| 22 | |
| 23 | function getKeywords(editor) { |
| 24 | var mode = editor.doc.modeOption; |
| 25 | if (mode === "sql") mode = "text/x-sql"; |
| 26 | return CodeMirror.resolveMode(mode).keywords; |
| 27 | } |
| 28 | |
| 29 | function getText(item) { |
| 30 | return typeof item == "string" ? item : item.text; |
| 31 | } |
| 32 | |
| 33 | function getItem(list, item) { |
| 34 | if (!list.slice) return list[item]; |
| 35 | for (var i = list.length - 1; i >= 0; i--) if (getText(list[i]) == item) |
| 36 | return list[i]; |
| 37 | } |
| 38 | |
| 39 | function shallowClone(object) { |
| 40 | var result = {}; |
| 41 | for (var key in object) if (object.hasOwnProperty(key)) |
| 42 | result[key] = object[key]; |
| 43 | return result; |
| 44 | } |
| 45 | |
| 46 | function match(string, word) { |
| 47 | var len = string.length; |
| 48 | var sub = getText(word).substr(0, len); |
| 49 | return string.toUpperCase() === sub.toUpperCase(); |
| 50 | } |
| 51 | |
| 52 | function addMatches(result, search, wordlist, formatter) { |
| 53 | for (var word in wordlist) { |
| 54 | if (!wordlist.hasOwnProperty(word)) continue; |
| 55 | if (wordlist.slice) word = wordlist[word]; |
| 56 | |
| 57 | if (match(search, word)) result.push(formatter(word)); |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | function cleanName(name) { |
| 62 | // Get rid name from backticks(`) and preceding dot(.) |
| 63 | if (name.charAt(0) == ".") { |
| 64 | name = name.substr(1); |
| 65 | } |
| 66 | return name.replace(/`/g, ""); |
| 67 | } |
| 68 | |
| 69 | function insertBackticks(name) { |
| 70 | var nameParts = getText(name).split("."); |
| 71 | for (var i = 0; i < nameParts.length; i++) |
| 72 | nameParts[i] = "`" + nameParts[i] + "`"; |
| 73 | var escaped = nameParts.join("."); |
| 74 | if (typeof name == "string") return escaped; |
| 75 | name = shallowClone(name); |
| 76 | name.text = escaped; |
| 77 | return name; |
| 78 | } |
| 79 | |
| 80 | function nameCompletion(cur, token, result, editor) { |
| 81 | // Try to complete table, colunm names and return start position of completion |
| 82 | var useBacktick = false; |
| 83 | var nameParts = []; |
| 84 | var start = token.start; |
| 85 | var cont = true; |
| 86 | while (cont) { |
| 87 | cont = (token.string.charAt(0) == "."); |
| 88 | useBacktick = useBacktick || (token.string.charAt(0) == "`"); |
| 89 | |
| 90 | start = token.start; |
| 91 | nameParts.unshift(cleanName(token.string)); |
| 92 | |
| 93 | token = editor.getTokenAt(Pos(cur.line, token.start)); |
| 94 | if (token.string == ".") { |
| 95 | cont = true; |
| 96 | token = editor.getTokenAt(Pos(cur.line, token.start)); |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | // Try to complete table names |
| 101 | var string = nameParts.join("."); |
| 102 | addMatches(result, string, tables, function(w) { |
| 103 | return useBacktick ? insertBackticks(w) : w; |
| 104 | }); |
| 105 | |
| 106 | // Try to complete columns from defaultTable |
| 107 | addMatches(result, string, defaultTable, function(w) { |
| 108 | return useBacktick ? insertBackticks(w) : w; |
| 109 | }); |
| 110 | |
| 111 | // Try to complete columns |
| 112 | string = nameParts.pop(); |
| 113 | var table = nameParts.join("."); |
| 114 | |
| 115 | // Check if table is available. If not, find table by Alias |
| 116 | if (!getItem(tables, table)) |
| 117 | table = findTableByAlias(table, editor); |
| 118 | |
| 119 | var columns = getItem(tables, table); |
| 120 | if (columns && columns.columns) |
| 121 | columns = columns.columns; |
| 122 | |
| 123 | if (columns) { |
| 124 | addMatches(result, string, columns, function(w) { |
| 125 | if (typeof w == "string") { |
| 126 | w = table + "." + w; |
| 127 | } else { |
| 128 | w = shallowClone(w); |
| 129 | w.text = table + "." + w.text; |
| 130 | } |
| 131 | return useBacktick ? insertBackticks(w) : w; |
| 132 | }); |
| 133 | } |
| 134 | |
| 135 | return start; |
| 136 | } |
| 137 | |
| 138 | function eachWord(lineText, f) { |
| 139 | if (!lineText) return; |
| 140 | var excepted = /[,;]/g; |
| 141 | var words = lineText.split(" "); |
| 142 | for (var i = 0; i < words.length; i++) { |
| 143 | f(words[i]?words[i].replace(excepted, '') : ''); |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | function convertCurToNumber(cur) { |
| 148 | // max characters of a line is 999,999. |
| 149 | return cur.line + cur.ch / Math.pow(10, 6); |
| 150 | } |
| 151 | |
| 152 | function convertNumberToCur(num) { |
| 153 | return Pos(Math.floor(num), +num.toString().split('.').pop()); |
| 154 | } |
| 155 | |
| 156 | function findTableByAlias(alias, editor) { |
| 157 | var doc = editor.doc; |
| 158 | var fullQuery = doc.getValue(); |
| 159 | var aliasUpperCase = alias.toUpperCase(); |
| 160 | var previousWord = ""; |
| 161 | var table = ""; |
| 162 | var separator = []; |
| 163 | var validRange = { |
| 164 | start: Pos(0, 0), |
| 165 | end: Pos(editor.lastLine(), editor.getLineHandle(editor.lastLine()).length) |
| 166 | }; |
| 167 | |
| 168 | //add separator |
| 169 | var indexOfSeparator = fullQuery.indexOf(CONS.QUERY_DIV); |
| 170 | while(indexOfSeparator != -1) { |
| 171 | separator.push(doc.posFromIndex(indexOfSeparator)); |
| 172 | indexOfSeparator = fullQuery.indexOf(CONS.QUERY_DIV, indexOfSeparator+1); |
| 173 | } |
| 174 | separator.unshift(Pos(0, 0)); |
| 175 | separator.push(Pos(editor.lastLine(), editor.getLineHandle(editor.lastLine()).text.length)); |
| 176 | |
| 177 | //find valid range |
| 178 | var prevItem = 0; |
| 179 | var current = convertCurToNumber(editor.getCursor()); |
| 180 | for (var i=0; i< separator.length; i++) { |
| 181 | var _v = convertCurToNumber(separator[i]); |
| 182 | if (current > prevItem && current <= _v) { |
| 183 | validRange = { start: convertNumberToCur(prevItem), end: convertNumberToCur(_v) }; |
| 184 | break; |
| 185 | } |
| 186 | prevItem = _v; |
| 187 | } |
| 188 | |
| 189 | var query = doc.getRange(validRange.start, validRange.end, false); |
| 190 | |
| 191 | for (var i = 0; i < query.length; i++) { |
| 192 | var lineText = query[i]; |
| 193 | eachWord(lineText, function(word) { |
| 194 | var wordUpperCase = word.toUpperCase(); |
| 195 | if (wordUpperCase === aliasUpperCase && getItem(tables, previousWord)) |
| 196 | table = previousWord; |
| 197 | if (wordUpperCase !== CONS.ALIAS_KEYWORD) |
| 198 | previousWord = word; |
| 199 | }); |
| 200 | if (table) break; |
| 201 | } |
| 202 | return table; |
| 203 | } |
| 204 | |
| 205 | CodeMirror.registerHelper("hint", "sql", function(editor, options) { |
| 206 | tables = (options && options.tables) || {}; |
| 207 | var defaultTableName = options && options.defaultTable; |
| 208 | defaultTable = defaultTableName && getItem(tables, defaultTableName); |
| 209 | keywords = keywords || getKeywords(editor); |
| 210 | |
| 211 | if (defaultTableName && !defaultTable) |
| 212 | defaultTable = findTableByAlias(defaultTableName, editor); |
| 213 | |
| 214 | defaultTable = defaultTable || []; |
| 215 | |
| 216 | if (defaultTable.columns) |
| 217 | defaultTable = defaultTable.columns; |
| 218 | |
| 219 | var cur = editor.getCursor(); |
| 220 | var result = []; |
| 221 | var token = editor.getTokenAt(cur), start, end, search; |
| 222 | if (token.end > cur.ch) { |
| 223 | token.end = cur.ch; |
| 224 | token.string = token.string.slice(0, cur.ch - token.start); |
| 225 | } |
| 226 | |
| 227 | if (token.string.match(/^[.`\w@]\w*$/)) { |
| 228 | search = token.string; |
| 229 | start = token.start; |
| 230 | end = token.end; |
| 231 | } else { |
| 232 | start = end = cur.ch; |
| 233 | search = ""; |
| 234 | } |
| 235 | if (search.charAt(0) == "." || search.charAt(0) == "`") { |
| 236 | start = nameCompletion(cur, token, result, editor); |
| 237 | } else { |
| 238 | addMatches(result, search, tables, function(w) {return w;}); |
| 239 | addMatches(result, search, defaultTable, function(w) {return w;}); |
| 240 | addMatches(result, search, keywords, function(w) {return w.toUpperCase();}); |
| 241 | } |
| 242 | |
| 243 | return {list: result, from: Pos(cur.line, start), to: Pos(cur.line, end)}; |
| 244 | }); |
| 245 | }); |
| 246 |