Initial import

2026-01-18 00:53:18 +00:00
parent fb78291fb1
commit 940191502e
115 changed files with 15524 additions and 0 deletions
--- a/lib/PDF.php
+++ b/lib/PDF.php
@@ -0,0 +1,145 @@
+<?php
+
+require_once(__DIR__ . "/File.php");
+
+define("PDF_SCREEN", 0);
+define("PDF_EBOOK", 1);
+define("PDF_PRINT", 2);
+define("PDF_PREPRESS", 3);
+
+class PDF extends File {
+	
+	private $_force_download = false;
+	private $_fake_filename = null;
+
+	public function __construct($f) {
+		parent::__construct($f);
+	}
+
+	public function extract_page($page, $file, $dpi = 300) {
+
+		$m = Config::get("MAGICK");
+
+		$p = new Process($m);
+		$p->arg("-density"); $p->arg($dpi);
+		$p->arg(sprintf("%s[%d]", $this->path(), $page));
+		$p->arg("-alpha"); $p->arg("remove");
+		$p->arg($file);
+
+		$rv = $p->execute();
+
+		if ($rv != 0) {
+			$img = new Image(640, 640);
+
+			$y = 40;
+			$x = 10;
+
+			$b = $img->color(255,255,255);
+			$f = $img->color(0, 0, 0);
+			$img->clear($b);
+
+			$e = implode("\n", $p->stderr());
+			$e = wordwrap($e, 80);
+			$e = explode("\n", $e);
+			
+			foreach ($e as $l) {
+				$img->text($x, $y, $l, $f, 3);
+				$y += 20;
+			}
+
+			$img->save($file, "image/jpeg");
+			return $img;
+
+		}
+
+		return new Image($file);
+	}
+
+	public function force_download() {
+		$this->_force_download = true;
+	}
+
+	public function fake_filename($f) {
+		$this->_fake_filename = $f;
+	}
+
+	public function emit() {
+
+		$filename = $this->_fake_filename;
+		if ($filename == null) {
+			$filename = $this->basename();
+		}
+
+		if ($this->_force_download) {
+			$this->set_header("Content-Type", "application/octet-stream");
+        	$this->set_header("Cache-Control", "public, max-age=31560000, immutable");
+        	$this->set_header("Content-Disposition", "attachment; filename=\"$filename\"");
+		} else {
+			$this->set_header("Content-Type", "application/pdf");
+        	$this->set_header("Cache-Control", "public, max-age=31560000, immutable");
+        	$this->set_header("Content-Disposition", "inline; filename=\"$filename\"");
+		}
+
+		parent::emit();
+	}
+
+
+	public function info() {
+		$infolines = array();
+		$info = array();
+		$proc = new Process("pdfinfo");
+		$proc->arg($this->path());
+		$proc->execute();
+
+		$infolines = $proc->stdout();
+		foreach ($infolines as $line) {
+			if (preg_match('/^([^:]+):\s+(.*)$/', $line, $m)) {
+				$info[$m[1]] = $m[2];
+			}
+		}
+		return $info;
+	}
+
+
+	public function geminiOverview($verbose=false) {
+		$g = new Gemini();
+		$g->verbose = $verbose;
+		try {
+			return $g->geminiOverview($this);
+		} catch (Exception $e) {
+			throw $e;
+		}
+	}
+
+	public function recompress($dest, $size=PDF_SCREEN) {
+		$proc = new Process("gs");
+
+		$proc->arg("-sDEVICE=pdfwrite");
+		$proc->arg("-dCompatibilityLevel=1.6");
+		switch ($size) {	
+			case PDF_SCREEN:
+				$proc->arg("-dPDFSETTINGS=/screen");
+				break;
+			case PDF_EBOOK:
+				$proc->arg("-dPDFSETTINGS=/ebook");
+				break;
+			case PDF_PRINT:
+				$proc->arg("-dPDFSETTINGS=/printer");
+				break;
+			case PDF_PREPRESS:
+				$proc->arg("-dPDFSETTINGS=/prepress");
+				break;
+		}
+		$proc->arg("-dNOPAUSE");
+		$proc->arg("-dQUIET");
+		$proc->arg("-dBATCH");
+		$proc->arg("-sOutputFile=" . $dest);
+		$proc->arg($this->path());
+		$rv = $proc->execute();
+
+		if ($rv == 0) {
+			return new PDF($dest);
+		}
+		return false;
+	}
+}