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197 lines
4.3 KiB
197 lines
4.3 KiB
/*
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* Jingle call example
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* Copyright 2004--2005, Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA
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*/
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extern "C" {
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#include <sys/types.h>
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#include <sys/time.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <ctype.h>
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}
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#include <cassert>
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#include <cstdio>
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#include <cstdlib>
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#include <cstdarg>
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#include "talk/examples/call/console.h"
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namespace {
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void PError(const char* desc) {
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perror(desc);
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exit(1);
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}
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CConsole* gConsole = NULL;
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const uint32 MSG_UPDATE = 1;
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} // namespace
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void InitConsole(cricket::PhysicalSocketServer* ss) {
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assert(gConsole == NULL);
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assert(ss);
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gConsole = new CConsole(ss);
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}
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CConsole* Console() {
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assert(gConsole);
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return gConsole;
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}
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CConsole::CConsole(cricket::PhysicalSocketServer* ss)
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: prompting_(false), prompt_dirty_(false) {
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stdin_ = ss->CreateFile(0);
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stdin_->SignalReadEvent.connect(this, &CConsole::OnReadInput);
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tasks_ = new std::vector<ConsoleTask*>;
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}
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CConsole::~CConsole() {
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delete stdin_;
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delete tasks_;
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}
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void CConsole::Push(ConsoleTask* task) {
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task->set_console(this);
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task->SignalDone.connect(this, &CConsole::OnTaskDone);
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tasks_->push_back(task);
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task->Start();
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UpdatePrompt();
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}
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void CConsole::Remove(ConsoleTask* task) {
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int index = -1;
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for (size_t i = 0; i < tasks_->size(); ++i) {
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if ((*tasks_)[i] == task)
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index = i;
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}
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assert(index >= 0);
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tasks_->erase(tasks_->begin() + index);
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if (static_cast<int>(tasks_->size()) == index)
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UpdatePrompt();
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delete task;
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if (tasks_->size() == 0)
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exit(0);
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}
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void CConsole::Print(const char* str) {
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if (prompting_)
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printf("\r");
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printf("%s\n", str);
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prompting_ = false;
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UpdatePrompt();
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}
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void CConsole::Print(const std::string& str) {
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Print(str.c_str());
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}
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void CConsole::Printf(const char* format, ...) {
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va_list ap;
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va_start(ap, format);
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char buf[4096];
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int size = vsnprintf(buf, sizeof(buf), format, ap);
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assert(size >= 0);
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assert(size < static_cast<int>(sizeof(buf)));
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buf[size] = '\0';
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Print(buf);
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va_end(ap);
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}
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void CConsole::OnTaskDone(ConsoleTask* task) {
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Remove(task);
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}
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void CConsole::OnReadInput(cricket::AsyncFile* file) {
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assert(file == stdin_);
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char buf[4096];
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int size = read(0, buf, sizeof(buf));
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if (size < 0)
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PError("read");
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prompting_ = (buf[size-1] != '\n');
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int start = 0;
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for (int i = 0; i < size; ++i) {
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if (buf[i] == '\n') {
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std::string line = input_;
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line.append(buf + start, i + 1 - start);
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input_.clear();
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assert(tasks_->size() > 0);
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tasks_->back()->ProcessLine(line);
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start = i + 1;
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}
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}
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input_.append(buf + start, size - start);
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}
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void CConsole::OnMessage(cricket::Message* pmsg) {
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assert(pmsg->message_id == MSG_UPDATE);
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assert(tasks_->size() > 0);
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if (prompting_)
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printf("\n");
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printf("%s: %s", tasks_->back()->GetPrompt().c_str(), input_.c_str());
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fflush(stdout);
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prompting_ = true;
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prompt_dirty_ = false;
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}
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void CConsole::UpdatePrompt() {
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if (!prompt_dirty_) {
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prompt_dirty_ = true;
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cricket::Thread::Current()->Post(this, MSG_UPDATE);
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}
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}
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void ConsoleTask::ParseLine(const std::string& line,
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std::vector<std::string>* words) {
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assert(line.size() > 0);
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assert(line[line.size() - 1] == '\n');
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int start = -1;
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int state = 0;
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for (int index = 0; index <= static_cast<int>(line.size()); ++index) {
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if (state == 0) {
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if (!isspace(line[index])) {
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start = index;
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state = 1;
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}
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} else {
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assert(state == 1);
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assert(start >= 0);
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if (isspace(line[index])) {
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std::string word(line, start, index - start);
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words->push_back(word);
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start = -1;
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state = 0;
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}
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}
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}
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}
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