/* //device/system/reference-ril/at_tok.c ** ** Copyright 2006, The Android Open Source Project ** ** Licensed under the Apache License, Version 2.0 (the "License"); ** you may not use this file except in compliance with the License. ** You may obtain a copy of the License at ** ** http://www.apache.org/licenses/LICENSE-2.0 ** ** Unless required by applicable law or agreed to in writing, software ** distributed under the License is distributed on an "AS IS" BASIS, ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. ** See the License for the specific language governing permissions and ** limitations under the License. */ #include "at_tok.h" #include <string.h> #include <ctype.h> #include <stdlib.h> /** * Starts tokenizing an AT response string * returns -1 if this is not a valid response string, 0 on success. * updates *p_cur with current position */ int at_tok_start(char **p_cur) { if (*p_cur == NULL) { return -1; } // skip prefix // consume "^[^:]:" *p_cur = strchr(*p_cur, ':'); if (*p_cur == NULL) { return -1; } (*p_cur)++; return 0; } static void skipWhiteSpace(char **p_cur) { if (*p_cur == NULL) return; while (**p_cur != '\0' && isspace(**p_cur)) { (*p_cur)++; } } static void skipNextComma(char **p_cur) { if (*p_cur == NULL) return; while (**p_cur != '\0' && **p_cur != ',') { (*p_cur)++; } if (**p_cur == ',') { (*p_cur)++; } } static char * nextTok(char **p_cur) { char *ret = NULL; skipWhiteSpace(p_cur); if (*p_cur == NULL) { ret = NULL; } else if (**p_cur == '"') { (*p_cur)++; ret = strsep(p_cur, "\""); skipNextComma(p_cur); } else { ret = strsep(p_cur, ","); } return ret; } /** * Parses the next integer in the AT response line and places it in *p_out * returns 0 on success and -1 on fail * updates *p_cur * "base" is the same as the base param in strtol */ static int at_tok_nextint_base(char **p_cur, int *p_out, int base, int uns) { char *ret; if (*p_cur == NULL) { return -1; } ret = nextTok(p_cur); if (ret == NULL) { return -1; } else { long l; char *end; if (uns) l = strtoul(ret, &end, base); else l = strtol(ret, &end, base); *p_out = (int)l; if (end == ret) { return -1; } } return 0; } /** * Parses the next base 10 integer in the AT response line * and places it in *p_out * returns 0 on success and -1 on fail * updates *p_cur */ int at_tok_nextint(char **p_cur, int *p_out) { return at_tok_nextint_base(p_cur, p_out, 10, 0); } /** * Parses the next base 16 integer in the AT response line * and places it in *p_out * returns 0 on success and -1 on fail * updates *p_cur */ int at_tok_nexthexint(char **p_cur, int *p_out) { return at_tok_nextint_base(p_cur, p_out, 16, 1); } int at_tok_nextbool(char **p_cur, char *p_out) { int ret; int result; ret = at_tok_nextint(p_cur, &result); if (ret < 0) { return -1; } // booleans should be 0 or 1 if (!(result == 0 || result == 1)) { return -1; } if (p_out != NULL) { *p_out = (char)result; } return ret; } int at_tok_nextstr(char **p_cur, char **p_out) { if (*p_cur == NULL) { return -1; } *p_out = nextTok(p_cur); return 0; } /** returns 1 on "has more tokens" and 0 if no */ int at_tok_hasmore(char **p_cur) { return ! (*p_cur == NULL || **p_cur == '\0'); }