blob: 02a2690a3c610c20361a707700564a210969b040 [file] [log] [blame]
// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chromecast/base/process_utils.h"
#include <errno.h>
#include <stddef.h>
#include <stdio.h>
#include "base/logging.h"
#include "base/posix/safe_strerror.h"
#include "base/strings/string_util.h"
namespace chromecast {
bool GetAppOutput(const std::vector<std::string>& argv, std::string* output) {
DCHECK(output);
// Join the args into one string, creating the command.
std::string command = base::JoinString(argv, " ");
// Open the process.
FILE* fp = popen(command.c_str(), "r");
if (!fp) {
LOG(ERROR) << "popen (" << command << ") failed: "
<< base::safe_strerror(errno);
return false;
}
// Fill |output| with the stdout from the process.
output->clear();
while (!feof(fp)) {
char buffer[256];
size_t bytes_read = fread(buffer, 1, sizeof(buffer), fp);
if (bytes_read <= 0)
break;
output->append(buffer, bytes_read);
}
// pclose() function waits for the associated process to terminate and returns
// the exit status.
return (pclose(fp) == 0);
}
} // namespace chromecast