new file

NcursesProgressDialog.php

@@ -0,0 +1,74 @@
+<?php
+namespace Sparklib;
+
+class NcursesProgressDialog {
+
+  private $limit;
+
+  // Middle window resource.
+  private $window;
+
+  // Position of the progress bar.
+  private $bar_x = 1;
+
+  /**
+   * @param int $limit - the number of tasks to be completed, num db rows or whatever
+   * @param string $title - the title of the window
+   */
+  public function __construct ($limit, $title='New Task')
+  {
+    // Fallback for if libncurses is missing.  Just do nothing.
+    if (! function_exists('ncurses_init')) return;
+
+    // How many records will we be processing?
+    $this->limit = $limit;
+
+    ncurses_init();
+
+    // Border the screen.
+    ncurses_border(0,0, 0,0, 0,0, 0,0);
+
+    // Get the size of the screen.
+    ncurses_getmaxyx(STDSCR, $lines, $columns);
+
+    // Make a window in the middle that's half the width of the screen.
+    $width = $columns / 2;
+    $this->window = ncurses_newwin(15, $width, $lines/4, $width/2);
+    ncurses_wborder($this->window, 0,0, 0,0, 0,0, 0,0);
+
+    // Title it.
+    ncurses_mvwaddstr($this->window, 0, 5, $title);
+
+    // Show progress bar boundaries.
+    ncurses_mvwaddstr($this->window, 12, 1, '|');
+    ncurses_mvwaddstr($this->window, 12, $width-2, '|');
+
+    // Figure out what one character is worth based on the above.
+    $this->unit = round($limit / ($width - 3));
+
+    ncurses_refresh();
+  }
+
+  /**
+   * @param int $place - number of the current task
+   */
+  public function update ($place)
+  {
+    if (! function_exists('ncurses_init')) return;
+
+    ncurses_mvwaddstr($this->window, 5, 5, 'Processing record '.$place.' of '.$this->limit);
+
+    $percent = (round($place / $this->limit, 2) * 100) . '%';
+    ncurses_mvwaddstr($this->window, 10, 5, $percent);
+
+    if ($place % $this->unit == 0) {
+      $this->bar_x += 1;
+      ncurses_mvwaddstr($this->window, 12, $this->bar_x, '=>');
+    }
+
+    ncurses_wrefresh($this->window);
+
+    if ($place >= $this->limit) ncurses_end();
+  }
+
+}