The Android Open Source Project | 00f06fc | 2009-03-03 19:32:15 -0800 | [diff] [blame] | 1 | /* //device/system/reference-ril/at_tok.c |
| 2 | ** |
| 3 | ** Copyright 2006, The Android Open Source Project |
| 4 | ** |
Wink Saville | 7f85680 | 2009-06-09 10:23:37 -0700 | [diff] [blame] | 5 | ** Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | ** you may not use this file except in compliance with the License. |
| 7 | ** You may obtain a copy of the License at |
The Android Open Source Project | 00f06fc | 2009-03-03 19:32:15 -0800 | [diff] [blame] | 8 | ** |
Wink Saville | 7f85680 | 2009-06-09 10:23:37 -0700 | [diff] [blame] | 9 | ** http://www.apache.org/licenses/LICENSE-2.0 |
The Android Open Source Project | 00f06fc | 2009-03-03 19:32:15 -0800 | [diff] [blame] | 10 | ** |
Wink Saville | 7f85680 | 2009-06-09 10:23:37 -0700 | [diff] [blame] | 11 | ** Unless required by applicable law or agreed to in writing, software |
| 12 | ** distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | ** See the License for the specific language governing permissions and |
The Android Open Source Project | 00f06fc | 2009-03-03 19:32:15 -0800 | [diff] [blame] | 15 | ** limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | #include "at_tok.h" |
| 19 | #include <string.h> |
| 20 | #include <ctype.h> |
| 21 | #include <stdlib.h> |
| 22 | |
| 23 | /** |
| 24 | * Starts tokenizing an AT response string |
| 25 | * returns -1 if this is not a valid response string, 0 on success. |
| 26 | * updates *p_cur with current position |
| 27 | */ |
| 28 | int at_tok_start(char **p_cur) |
| 29 | { |
| 30 | if (*p_cur == NULL) { |
| 31 | return -1; |
| 32 | } |
| 33 | |
| 34 | // skip prefix |
| 35 | // consume "^[^:]:" |
| 36 | |
| 37 | *p_cur = strchr(*p_cur, ':'); |
| 38 | |
| 39 | if (*p_cur == NULL) { |
| 40 | return -1; |
| 41 | } |
| 42 | |
| 43 | (*p_cur)++; |
| 44 | |
| 45 | return 0; |
| 46 | } |
| 47 | |
| 48 | static void skipWhiteSpace(char **p_cur) |
| 49 | { |
| 50 | if (*p_cur == NULL) return; |
| 51 | |
| 52 | while (**p_cur != '\0' && isspace(**p_cur)) { |
| 53 | (*p_cur)++; |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | static void skipNextComma(char **p_cur) |
| 58 | { |
| 59 | if (*p_cur == NULL) return; |
| 60 | |
| 61 | while (**p_cur != '\0' && **p_cur != ',') { |
| 62 | (*p_cur)++; |
| 63 | } |
| 64 | |
| 65 | if (**p_cur == ',') { |
| 66 | (*p_cur)++; |
Wink Saville | 7f85680 | 2009-06-09 10:23:37 -0700 | [diff] [blame] | 67 | } |
The Android Open Source Project | 00f06fc | 2009-03-03 19:32:15 -0800 | [diff] [blame] | 68 | } |
| 69 | |
| 70 | static char * nextTok(char **p_cur) |
| 71 | { |
| 72 | char *ret = NULL; |
| 73 | |
| 74 | skipWhiteSpace(p_cur); |
| 75 | |
| 76 | if (*p_cur == NULL) { |
| 77 | ret = NULL; |
| 78 | } else if (**p_cur == '"') { |
| 79 | (*p_cur)++; |
| 80 | ret = strsep(p_cur, "\""); |
| 81 | skipNextComma(p_cur); |
| 82 | } else { |
| 83 | ret = strsep(p_cur, ","); |
| 84 | } |
| 85 | |
| 86 | return ret; |
| 87 | } |
| 88 | |
| 89 | |
| 90 | /** |
| 91 | * Parses the next integer in the AT response line and places it in *p_out |
| 92 | * returns 0 on success and -1 on fail |
| 93 | * updates *p_cur |
| 94 | * "base" is the same as the base param in strtol |
| 95 | */ |
| 96 | |
| 97 | static int at_tok_nextint_base(char **p_cur, int *p_out, int base, int uns) |
| 98 | { |
| 99 | char *ret; |
Wink Saville | 7f85680 | 2009-06-09 10:23:37 -0700 | [diff] [blame] | 100 | |
The Android Open Source Project | 00f06fc | 2009-03-03 19:32:15 -0800 | [diff] [blame] | 101 | if (*p_cur == NULL) { |
| 102 | return -1; |
| 103 | } |
| 104 | |
| 105 | ret = nextTok(p_cur); |
| 106 | |
| 107 | if (ret == NULL) { |
| 108 | return -1; |
| 109 | } else { |
| 110 | long l; |
| 111 | char *end; |
| 112 | |
| 113 | if (uns) |
| 114 | l = strtoul(ret, &end, base); |
| 115 | else |
| 116 | l = strtol(ret, &end, base); |
| 117 | |
| 118 | *p_out = (int)l; |
| 119 | |
| 120 | if (end == ret) { |
| 121 | return -1; |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | return 0; |
| 126 | } |
| 127 | |
| 128 | /** |
Wink Saville | 7f85680 | 2009-06-09 10:23:37 -0700 | [diff] [blame] | 129 | * Parses the next base 10 integer in the AT response line |
The Android Open Source Project | 00f06fc | 2009-03-03 19:32:15 -0800 | [diff] [blame] | 130 | * and places it in *p_out |
| 131 | * returns 0 on success and -1 on fail |
| 132 | * updates *p_cur |
| 133 | */ |
| 134 | int at_tok_nextint(char **p_cur, int *p_out) |
| 135 | { |
| 136 | return at_tok_nextint_base(p_cur, p_out, 10, 0); |
| 137 | } |
| 138 | |
| 139 | /** |
Wink Saville | 7f85680 | 2009-06-09 10:23:37 -0700 | [diff] [blame] | 140 | * Parses the next base 16 integer in the AT response line |
The Android Open Source Project | 00f06fc | 2009-03-03 19:32:15 -0800 | [diff] [blame] | 141 | * and places it in *p_out |
| 142 | * returns 0 on success and -1 on fail |
| 143 | * updates *p_cur |
| 144 | */ |
| 145 | int at_tok_nexthexint(char **p_cur, int *p_out) |
| 146 | { |
| 147 | return at_tok_nextint_base(p_cur, p_out, 16, 1); |
| 148 | } |
| 149 | |
| 150 | int at_tok_nextbool(char **p_cur, char *p_out) |
| 151 | { |
| 152 | int ret; |
| 153 | int result; |
| 154 | |
| 155 | ret = at_tok_nextint(p_cur, &result); |
| 156 | |
| 157 | if (ret < 0) { |
| 158 | return -1; |
| 159 | } |
| 160 | |
| 161 | // booleans should be 0 or 1 |
| 162 | if (!(result == 0 || result == 1)) { |
| 163 | return -1; |
| 164 | } |
| 165 | |
| 166 | if (p_out != NULL) { |
| 167 | *p_out = (char)result; |
| 168 | } |
| 169 | |
| 170 | return ret; |
| 171 | } |
| 172 | |
| 173 | int at_tok_nextstr(char **p_cur, char **p_out) |
| 174 | { |
| 175 | if (*p_cur == NULL) { |
| 176 | return -1; |
| 177 | } |
| 178 | |
| 179 | *p_out = nextTok(p_cur); |
| 180 | |
| 181 | return 0; |
| 182 | } |
| 183 | |
| 184 | /** returns 1 on "has more tokens" and 0 if no */ |
| 185 | int at_tok_hasmore(char **p_cur) |
| 186 | { |
| 187 | return ! (*p_cur == NULL || **p_cur == '\0'); |
| 188 | } |
| 189 | |
| 190 | |