10825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville/* 20825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville * Copyright (C) 2006 The Android Open Source Project 30825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville * 40825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville * Licensed under the Apache License, Version 2.0 (the "License"); 50825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville * you may not use this file except in compliance with the License. 60825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville * You may obtain a copy of the License at 70825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville * 80825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville * http://www.apache.org/licenses/LICENSE-2.0 90825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville * 100825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville * Unless required by applicable law or agreed to in writing, software 110825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville * distributed under the License is distributed on an "AS IS" BASIS, 120825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 130825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville * See the License for the specific language governing permissions and 140825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville * limitations under the License. 150825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville */ 160825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 170825495a331bb44df395a0cdb79fab85e68db5d5Wink Savillepackage com.android.internal.telephony; 180825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 190825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville/** 200825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville * {@hide} 210825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville */ 220825495a331bb44df395a0cdb79fab85e68db5d5Wink Savillepublic class ATResponseParser 230825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville{ 240825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville /*************************** Instance Variables **************************/ 250825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 260825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville private String line; 270825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville private int next = 0; 280825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville private int tokStart, tokEnd; 290825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 300825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville /***************************** Class Methods *****************************/ 310825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 320825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville public 330825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville ATResponseParser (String line) 340825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville { 350825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville this.line = line; 360825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 370825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 380825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville public boolean 390825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville nextBoolean() 400825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville { 410825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville // "\s*(\d)(,|$)" 420825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville // \d is '0' or '1' 430825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 440825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville nextTok(); 450825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 460825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville if (tokEnd - tokStart > 1) { 470825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville throw new ATParseEx(); 480825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 490825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville char c = line.charAt(tokStart); 500825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 510825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville if (c == '0') return false; 520825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville if (c == '1') return true; 530825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville throw new ATParseEx(); 540825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 550825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 560825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 570825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville /** positive int only */ 580825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville public int 590825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville nextInt() 600825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville { 610825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville // "\s*(\d+)(,|$)" 620825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville int ret = 0; 630825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 640825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville nextTok(); 650825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 660825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville for (int i = tokStart ; i < tokEnd ; i++) { 670825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville char c = line.charAt(i); 680825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 690825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville // Yes, ASCII decimal digits only 700825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville if (c < '0' || c > '9') { 710825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville throw new ATParseEx(); 720825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 730825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 740825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville ret *= 10; 750825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville ret += c - '0'; 760825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 770825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 780825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville return ret; 790825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 800825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 810825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville public String 820825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville nextString() 830825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville { 840825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville nextTok(); 850825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 860825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville return line.substring(tokStart, tokEnd); 870825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 880825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 890825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville public boolean 900825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville hasMore() 910825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville { 920825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville return next < line.length(); 930825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 940825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 950825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville private void 960825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville nextTok() 970825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville { 980825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville int len = line.length(); 990825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 1000825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville if (next == 0) { 1010825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville skipPrefix(); 1020825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 1030825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 1040825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville if (next >= len) { 1050825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville throw new ATParseEx(); 1060825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 1070825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 1080825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville try { 1090825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville // \s*("([^"]*)"|(.*)\s*)(,|$) 1100825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 1110825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville char c = line.charAt(next++); 1120825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville boolean hasQuote = false; 1130825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 1140825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville c = skipWhiteSpace(c); 1150825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 1160825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville if (c == '"') { 1170825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville if (next >= len) { 1180825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville throw new ATParseEx(); 1190825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 1200825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville c = line.charAt(next++); 1210825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville tokStart = next - 1; 1220825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville while (c != '"' && next < len) { 1230825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville c = line.charAt(next++); 1240825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 1250825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville if (c != '"') { 1260825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville throw new ATParseEx(); 1270825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 1280825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville tokEnd = next - 1; 1290825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville if (next < len && line.charAt(next++) != ',') { 1300825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville throw new ATParseEx(); 1310825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 1320825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } else { 1330825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville tokStart = next - 1; 1340825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville tokEnd = tokStart; 1350825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville while (c != ',') { 1360825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville if (!Character.isWhitespace(c)) { 1370825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville tokEnd = next; 1380825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 1390825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville if (next == len) { 1400825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville break; 1410825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 1420825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville c = line.charAt(next++); 1430825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 1440825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 1450825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } catch (StringIndexOutOfBoundsException ex) { 1460825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville throw new ATParseEx(); 1470825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 1480825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 1490825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 1500825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 1510825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville /** Throws ATParseEx if whitespace extends to the end of string */ 1520825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville private char 1530825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville skipWhiteSpace (char c) 1540825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville { 1550825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville int len; 1560825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville len = line.length(); 1570825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville while (next < len && Character.isWhitespace(c)) { 1580825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville c = line.charAt(next++); 1590825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 1600825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 1610825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville if (Character.isWhitespace(c)) { 1620825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville throw new ATParseEx(); 1630825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 1640825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville return c; 1650825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 1660825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 1670825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 1680825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville private void 1690825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville skipPrefix() 1700825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville { 1710825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville // consume "^[^:]:" 1720825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 1730825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville next = 0; 1740825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville int s = line.length(); 1750825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville while (next < s){ 1760825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville char c = line.charAt(next++); 1770825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 1780825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville if (c == ':') { 1790825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville return; 1800825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 1810825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 1820825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 1830825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville throw new ATParseEx("missing prefix"); 1840825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville } 1850825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville 1860825495a331bb44df395a0cdb79fab85e68db5d5Wink Saville} 187