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sql-hint.js
272 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, cmpPos = CodeMirror.cmpPos; |
| 22 | |
| 23 | function isArray(val) { return Object.prototype.toString.call(val) == "[object Array]" } |
| 24 | |
| 25 | function getKeywords(editor) { |
| 26 | var mode = editor.doc.modeOption; |
| 27 | if (mode === "sql") mode = "text/x-sql"; |
| 28 | return CodeMirror.resolveMode(mode).keywords; |
| 29 | } |
| 30 | |
| 31 | function getText(item) { |
| 32 | return typeof item == "string" ? item : item.text; |
| 33 | } |
| 34 | |
| 35 | function wrapTable(name, value) { |
| 36 | if (isArray(value)) value = {columns: value} |
| 37 | if (!value.text) value.text = name |
| 38 | return value |
| 39 | } |
| 40 | |
| 41 | function parseTables(input) { |
| 42 | var result = {} |
| 43 | if (isArray(input)) { |
| 44 | for (var i = input.length - 1; i >= 0; i--) { |
| 45 | var item = input[i] |
| 46 | result[getText(item).toUpperCase()] = wrapTable(getText(item), item) |
| 47 | } |
| 48 | } else if (input) { |
| 49 | for (var name in input) |
| 50 | result[name.toUpperCase()] = wrapTable(name, input[name]) |
| 51 | } |
| 52 | return result |
| 53 | } |
| 54 | |
| 55 | function getTable(name) { |
| 56 | return tables[name.toUpperCase()] |
| 57 | } |
| 58 | |
| 59 | function shallowClone(object) { |
| 60 | var result = {}; |
| 61 | for (var key in object) if (object.hasOwnProperty(key)) |
| 62 | result[key] = object[key]; |
| 63 | return result; |
| 64 | } |
| 65 | |
| 66 | function match(string, word) { |
| 67 | var len = string.length; |
| 68 | var sub = getText(word).substr(0, len); |
| 69 | return string.toUpperCase() === sub.toUpperCase(); |
| 70 | } |
| 71 | |
| 72 | function addMatches(result, search, wordlist, formatter) { |
| 73 | if (isArray(wordlist)) { |
| 74 | for (var i = 0; i < wordlist.length; i++) |
| 75 | if (match(search, wordlist[i])) result.push(formatter(wordlist[i])) |
| 76 | } else { |
| 77 | for (var word in wordlist) if (wordlist.hasOwnProperty(word)) { |
| 78 | var val = wordlist[word] |
| 79 | if (!val || val === true) |
| 80 | val = word |
| 81 | else |
| 82 | val = val.displayText ? {text: val.text, displayText: val.displayText} : val.text |
| 83 | if (match(search, val)) result.push(formatter(val)) |
| 84 | } |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | function cleanName(name) { |
| 89 | // Get rid name from backticks(`) and preceding dot(.) |
| 90 | if (name.charAt(0) == ".") { |
| 91 | name = name.substr(1); |
| 92 | } |
| 93 | return name.replace(/`/g, ""); |
| 94 | } |
| 95 | |
| 96 | function insertBackticks(name) { |
| 97 | var nameParts = getText(name).split("."); |
| 98 | for (var i = 0; i < nameParts.length; i++) |
| 99 | nameParts[i] = "`" + nameParts[i] + "`"; |
| 100 | var escaped = nameParts.join("."); |
| 101 | if (typeof name == "string") return escaped; |
| 102 | name = shallowClone(name); |
| 103 | name.text = escaped; |
| 104 | return name; |
| 105 | } |
| 106 | |
| 107 | function nameCompletion(cur, token, result, editor) { |
| 108 | // Try to complete table, column names and return start position of completion |
| 109 | var useBacktick = false; |
| 110 | var nameParts = []; |
| 111 | var start = token.start; |
| 112 | var cont = true; |
| 113 | while (cont) { |
| 114 | cont = (token.string.charAt(0) == "."); |
| 115 | useBacktick = useBacktick || (token.string.charAt(0) == "`"); |
| 116 | |
| 117 | start = token.start; |
| 118 | nameParts.unshift(cleanName(token.string)); |
| 119 | |
| 120 | token = editor.getTokenAt(Pos(cur.line, token.start)); |
| 121 | if (token.string == ".") { |
| 122 | cont = true; |
| 123 | token = editor.getTokenAt(Pos(cur.line, token.start)); |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | // Try to complete table names |
| 128 | var string = nameParts.join("."); |
| 129 | addMatches(result, string, tables, function(w) { |
| 130 | return useBacktick ? insertBackticks(w) : w; |
| 131 | }); |
| 132 | |
| 133 | // Try to complete columns from defaultTable |
| 134 | addMatches(result, string, defaultTable, function(w) { |
| 135 | return useBacktick ? insertBackticks(w) : w; |
| 136 | }); |
| 137 | |
| 138 | // Try to complete columns |
| 139 | string = nameParts.pop(); |
| 140 | var table = nameParts.join("."); |
| 141 | |
| 142 | var alias = false; |
| 143 | var aliasTable = table; |
| 144 | // Check if table is available. If not, find table by Alias |
| 145 | if (!getTable(table)) { |
| 146 | var oldTable = table; |
| 147 | table = findTableByAlias(table, editor); |
| 148 | if (table !== oldTable) alias = true; |
| 149 | } |
| 150 | |
| 151 | var columns = getTable(table); |
| 152 | if (columns && columns.columns) |
| 153 | columns = columns.columns; |
| 154 | |
| 155 | if (columns) { |
| 156 | addMatches(result, string, columns, function(w) { |
| 157 | var tableInsert = table; |
| 158 | if (alias == true) tableInsert = aliasTable; |
| 159 | if (typeof w == "string") { |
| 160 | w = tableInsert + "." + w; |
| 161 | } else { |
| 162 | w = shallowClone(w); |
| 163 | w.text = tableInsert + "." + w.text; |
| 164 | } |
| 165 | return useBacktick ? insertBackticks(w) : w; |
| 166 | }); |
| 167 | } |
| 168 | |
| 169 | return start; |
| 170 | } |
| 171 | |
| 172 | function eachWord(lineText, f) { |
| 173 | if (!lineText) return; |
| 174 | var excepted = /[,;]/g; |
| 175 | var words = lineText.split(" "); |
| 176 | for (var i = 0; i < words.length; i++) { |
| 177 | f(words[i]?words[i].replace(excepted, '') : ''); |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | function findTableByAlias(alias, editor) { |
| 182 | var doc = editor.doc; |
| 183 | var fullQuery = doc.getValue(); |
| 184 | var aliasUpperCase = alias.toUpperCase(); |
| 185 | var previousWord = ""; |
| 186 | var table = ""; |
| 187 | var separator = []; |
| 188 | var validRange = { |
| 189 | start: Pos(0, 0), |
| 190 | end: Pos(editor.lastLine(), editor.getLineHandle(editor.lastLine()).length) |
| 191 | }; |
| 192 | |
| 193 | //add separator |
| 194 | var indexOfSeparator = fullQuery.indexOf(CONS.QUERY_DIV); |
| 195 | while(indexOfSeparator != -1) { |
| 196 | separator.push(doc.posFromIndex(indexOfSeparator)); |
| 197 | indexOfSeparator = fullQuery.indexOf(CONS.QUERY_DIV, indexOfSeparator+1); |
| 198 | } |
| 199 | separator.unshift(Pos(0, 0)); |
| 200 | separator.push(Pos(editor.lastLine(), editor.getLineHandle(editor.lastLine()).text.length)); |
| 201 | |
| 202 | //find valid range |
| 203 | var prevItem = null; |
| 204 | var current = editor.getCursor() |
| 205 | for (var i = 0; i < separator.length; i++) { |
| 206 | if ((prevItem == null || cmpPos(current, prevItem) > 0) && cmpPos(current, separator[i]) <= 0) { |
| 207 | validRange = {start: prevItem, end: separator[i]}; |
| 208 | break; |
| 209 | } |
| 210 | prevItem = separator[i]; |
| 211 | } |
| 212 | |
| 213 | var query = doc.getRange(validRange.start, validRange.end, false); |
| 214 | |
| 215 | for (var i = 0; i < query.length; i++) { |
| 216 | var lineText = query[i]; |
| 217 | eachWord(lineText, function(word) { |
| 218 | var wordUpperCase = word.toUpperCase(); |
| 219 | if (wordUpperCase === aliasUpperCase && getTable(previousWord)) |
| 220 | table = previousWord; |
| 221 | if (wordUpperCase !== CONS.ALIAS_KEYWORD) |
| 222 | previousWord = word; |
| 223 | }); |
| 224 | if (table) break; |
| 225 | } |
| 226 | return table; |
| 227 | } |
| 228 | |
| 229 | CodeMirror.registerHelper("hint", "sql", function(editor, options) { |
| 230 | tables = parseTables(options && options.tables) |
| 231 | var defaultTableName = options && options.defaultTable; |
| 232 | var disableKeywords = options && options.disableKeywords; |
| 233 | defaultTable = defaultTableName && getTable(defaultTableName); |
| 234 | keywords = getKeywords(editor); |
| 235 | |
| 236 | if (defaultTableName && !defaultTable) |
| 237 | defaultTable = findTableByAlias(defaultTableName, editor); |
| 238 | |
| 239 | defaultTable = defaultTable || []; |
| 240 | |
| 241 | if (defaultTable.columns) |
| 242 | defaultTable = defaultTable.columns; |
| 243 | |
| 244 | var cur = editor.getCursor(); |
| 245 | var result = []; |
| 246 | var token = editor.getTokenAt(cur), start, end, search; |
| 247 | if (token.end > cur.ch) { |
| 248 | token.end = cur.ch; |
| 249 | token.string = token.string.slice(0, cur.ch - token.start); |
| 250 | } |
| 251 | |
| 252 | if (token.string.match(/^[.`\w@]\w*$/)) { |
| 253 | search = token.string; |
| 254 | start = token.start; |
| 255 | end = token.end; |
| 256 | } else { |
| 257 | start = end = cur.ch; |
| 258 | search = ""; |
| 259 | } |
| 260 | if (search.charAt(0) == "." || search.charAt(0) == "`") { |
| 261 | start = nameCompletion(cur, token, result, editor); |
| 262 | } else { |
| 263 | addMatches(result, search, tables, function(w) {return w;}); |
| 264 | addMatches(result, search, defaultTable, function(w) {return w;}); |
| 265 | if (!disableKeywords) |
| 266 | addMatches(result, search, keywords, function(w) {return w.toUpperCase();}); |
| 267 | } |
| 268 | |
| 269 | return {list: result, from: Pos(cur.line, start), to: Pos(cur.line, end)}; |
| 270 | }); |
| 271 | }); |
| 272 |