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Simplify exec_subshell_internal

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This commit is contained in:
ridiculousfish 2012-12-19 16:40:10 -08:00
parent 644607c29f
commit d5af389d2e
1 changed files with 19 additions and 31 deletions
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46
exec.cpp
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@ -1418,8 +1418,6 @@ void exec(parser_t &parser, job_t *j)
static int exec_subshell_internal(const wcstring &cmd, wcstring_list_t *lst)
{
ASSERT_IS_MAIN_THREAD();
char *begin, *end;
char z=0;
int prev_subshell = is_subshell;
int status, prev_status;
io_data_t *io_buffer;
@ -1462,41 +1460,31 @@ static int exec_subshell_internal(const wcstring &cmd, wcstring_list_t *lst)
is_subshell = prev_subshell;
io_buffer->out_buffer_append(&z, 1);
begin=end=io_buffer->out_buffer_ptr();
//REWRITEME
if (lst)
if (lst != NULL)
{
while (1)
const char *begin = io_buffer->out_buffer_ptr();
const char *end = begin + io_buffer->out_buffer_size();
const char *cursor = begin;
while (cursor < end)
{
if (*end == 0)
// Look for the next separator
const char *stop = (const char *)memchr(cursor, sep, end - cursor);
bool hit_separator = (stop != NULL);
if (! hit_separator)
{
assert(begin != NULL);
if (begin != end)
{
const wcstring el = str2wcstring(begin);
lst->push_back(el);
}
io_buffer_destroy(io_buffer);
// If it's not found, just use the end
stop = end;
}
// Stop now points at the first character we do not want to copy)
const wcstring wc = str2wcstring(cursor, stop - cursor);
lst->push_back(wc);
return status;
}
else if (*end == sep)
{
*end=0;
const wcstring el = str2wcstring(begin);
lst->push_back(el);
begin = end+1;
}
end++;
// If we hit a separator, skip over it; otherwise we're at the end
cursor = stop + (hit_separator ? 1 : 0);
}
}
io_buffer_destroy(io_buffer);
return status;
}