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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
      5  * use this file except in compliance with the License. You may obtain a copy of
      6  * the License at
      7  *
      8  * http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
     12  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
     13  * License for the specific language governing permissions and limitations under
     14  * the License.
     15  */
     16 
     17 #include <stdlib.h>
     18 #include <stdio.h>
     19 
     20 #include "Log.h"
     21 #include "StringUtil.h"
     22 
     23 #include "SimpleScriptExec.h"
     24 
     25 const char* SimpleScriptExec::PYTHON_PATH = "/usr/bin/python";
     26 const char* PASS_MAGIC_WORD = "___CTS_AUDIO_PASS___";
     27 
     28 bool SimpleScriptExec::checkPythonEnv()
     29 {
     30     android::String8 script("test_description/conf/check_conf.py");
     31     android::String8 param;
     32     android::String8 result;
     33     if (!runScript(script, param, result)) {
     34         return false;
     35     }
     36 
     37     android::String8 rePattern;
     38     return checkIfPassed(result, rePattern);
     39 }
     40 
     41 bool SimpleScriptExec::checkIfPassed(const android::String8& str, const android::String8& reMatch,
     42         int nmatch, regmatch_t pmatch[])
     43 {
     44     android::String8 match;
     45     match.append(PASS_MAGIC_WORD);
     46     match.append(reMatch);
     47     LOGV("re match %s", match.string());
     48     regex_t re;
     49     int cflags = REG_EXTENDED;
     50     if (nmatch == 0) {
     51         cflags |= REG_NOSUB;
     52     }
     53     if (regcomp(&re, match.string(), cflags) != 0) {
     54         LOGE("regcomp failed");
     55         return false;
     56     }
     57     bool result = false;
     58     if (regexec(&re, str.string(), nmatch, pmatch, 0) == 0) {
     59         // match found. passed
     60         result = true;
     61     }
     62     regfree(&re);
     63     return result;
     64 }
     65 
     66 bool SimpleScriptExec::runScript(const android::String8& script, const android::String8& param,
     67         android::String8& result)
     68 {
     69     FILE *fpipe;
     70     android::String8 command;
     71     command.appendFormat("%s %s %s", PYTHON_PATH, script.string(), param.string());
     72     const int READ_SIZE = 1024;
     73     char buffer[READ_SIZE];
     74     size_t len = 0;
     75 
     76     if ( !(fpipe = (FILE*)popen(command.string(),"r")) ) {
     77         LOGE("cannot execute python");
     78         return false;
     79     }
     80     result.clear();
     81     while((len = fread(buffer, 1, READ_SIZE, fpipe)) > 0) {
     82         result.append(buffer, len);
     83     }
     84     pclose(fpipe);
     85 
     86     return true;
     87 }
     88 
     89 
     90 
     91