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/*
* Jingle call example
* Copyright 2004--2005, Google Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
extern "C" {
#include <sys/types.h>
#include <sys/time.h>
#include <unistd.h>
#include <fcntl.h>
#include <ctype.h>
}
#include <cassert>
#include <cstdio>
#include <cstdlib>
#include <cstdarg>
#include "talk/examples/call/console.h"
namespace {
void PError(const char* desc) {
perror(desc);
exit(1);
}
CConsole* gConsole = NULL;
const uint32 MSG_UPDATE = 1;
} // namespace
void InitConsole(cricket::PhysicalSocketServer* ss) {
assert(gConsole == NULL);
assert(ss);
gConsole = new CConsole(ss);
}
CConsole* Console() {
assert(gConsole);
return gConsole;
}
CConsole::CConsole(cricket::PhysicalSocketServer* ss)
: prompting_(false), prompt_dirty_(false) {
stdin_ = ss->CreateFile(0);
stdin_->SignalReadEvent.connect(this, &CConsole::OnReadInput);
tasks_ = new std::vector<ConsoleTask*>;
}
CConsole::~CConsole() {
delete stdin_;
delete tasks_;
}
void CConsole::Push(ConsoleTask* task) {
task->set_console(this);
task->SignalDone.connect(this, &CConsole::OnTaskDone);
tasks_->push_back(task);
task->Start();
UpdatePrompt();
}
void CConsole::Remove(ConsoleTask* task) {
int index = -1;
for (size_t i = 0; i < tasks_->size(); ++i) {
if ((*tasks_)[i] == task)
index = i;
}
assert(index >= 0);
tasks_->erase(tasks_->begin() + index);
if (static_cast<int>(tasks_->size()) == index)
UpdatePrompt();
delete task;
if (tasks_->size() == 0)
exit(0);
}
void CConsole::Print(const char* str) {
if (prompting_)
printf("\r");
printf("%s\n", str);
prompting_ = false;
UpdatePrompt();
}
void CConsole::Print(const std::string& str) {
Print(str.c_str());
}
void CConsole::Printf(const char* format, ...) {
va_list ap;
va_start(ap, format);
char buf[4096];
int size = vsnprintf(buf, sizeof(buf), format, ap);
assert(size >= 0);
assert(size < static_cast<int>(sizeof(buf)));
buf[size] = '\0';
Print(buf);
va_end(ap);
}
void CConsole::OnTaskDone(ConsoleTask* task) {
Remove(task);
}
void CConsole::OnReadInput(cricket::AsyncFile* file) {
assert(file == stdin_);
char buf[4096];
int size = read(0, buf, sizeof(buf));
if (size < 0)
PError("read");
prompting_ = (buf[size-1] != '\n');
int start = 0;
for (int i = 0; i < size; ++i) {
if (buf[i] == '\n') {
std::string line = input_;
line.append(buf + start, i + 1 - start);
input_.clear();
assert(tasks_->size() > 0);
tasks_->back()->ProcessLine(line);
start = i + 1;
}
}
input_.append(buf + start, size - start);
}
void CConsole::OnMessage(cricket::Message* pmsg) {
assert(pmsg->message_id == MSG_UPDATE);
assert(tasks_->size() > 0);
if (prompting_)
printf("\n");
printf("%s: %s", tasks_->back()->GetPrompt().c_str(), input_.c_str());
fflush(stdout);
prompting_ = true;
prompt_dirty_ = false;
}
void CConsole::UpdatePrompt() {
if (!prompt_dirty_) {
prompt_dirty_ = true;
cricket::Thread::Current()->Post(this, MSG_UPDATE);
}
}
void ConsoleTask::ParseLine(const std::string& line,
std::vector<std::string>* words) {
assert(line.size() > 0);
assert(line[line.size() - 1] == '\n');
int start = -1;
int state = 0;
for (int index = 0; index <= static_cast<int>(line.size()); ++index) {
if (state == 0) {
if (!isspace(line[index])) {
start = index;
state = 1;
}
} else {
assert(state == 1);
assert(start >= 0);
if (isspace(line[index])) {
std::string word(line, start, index - start);
words->push_back(word);
start = -1;
state = 0;
}
}
}
}
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