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ShellManager: output stderr in the debug buffer

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This commit is contained in:
Maxime Coste 2012-09-06 14:28:07 +02:00
parent ddd5236b08
commit 96beaf50dd
1 changed files with 23 additions and 2 deletions
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25
src/shell_manager.cc
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@ -1,5 +1,7 @@
#include "shell_manager.hh"
#include "debug.hh"
#include <cstring>
#include <sys/types.h>
#include <sys/wait.h>
@ -23,17 +25,20 @@ String ShellManager::pipe(const String& input,
const String& cmdline, const Context& context,
const EnvVarMap& env_vars)
{
int write_pipe[2];
int read_pipe[2];
int write_pipe[2]; // child stdin
int read_pipe[2]; // child stdout
int error_pipe[2]; // child stderr
::pipe(write_pipe);
::pipe(read_pipe);
::pipe(error_pipe);
String output;
if (pid_t pid = fork())
{
close(write_pipe[0]);
close(read_pipe[1]);
close(error_pipe[1]);
memoryview<char> data = input.data();
write(write_pipe[1], data.pointer(), data.size());
@ -47,14 +52,30 @@ String ShellManager::pipe(const String& input,
output += String(buffer, buffer+size);
}
close(read_pipe[0]);
String errorout;
while (size_t size = read(error_pipe[0], buffer, 1024))
{
if (size == -1)
break;
errorout += String(buffer, buffer+size);
}
close(error_pipe[0]);
if (not errorout.empty())
{
write_debug("\nshell stderr: <<<\n" + errorout + ">>>\n");
}
waitpid(pid, NULL, 0);
}
else try
{
close(write_pipe[1]);
close(read_pipe[0]);
close(error_pipe[0]);
dup2(read_pipe[1], 1); close(read_pipe[1]);
dup2(error_pipe[1], 2); close(error_pipe[1]);
dup2(write_pipe[0], 0); close(write_pipe[0]);
boost::regex_iterator<String::iterator> it(cmdline.begin(), cmdline.end(), m_regex);