From ac3ea3af745b69a05d4d8df105a789473ba3ef12 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E5=8A=9F?= <chengong456@qq.com>
Date: Thu, 26 Oct 2023 18:27:43 -0700
Subject: [PATCH] text and image examples

---
 examples/extract_images.rs | 31 +++++++++++++++++++++++++++++++
 examples/extract_text.rs   | 21 +++++++++++++++++++++
 2 files changed, 52 insertions(+)
 create mode 100644 examples/extract_images.rs
 create mode 100644 examples/extract_text.rs

diff --git a/examples/extract_images.rs b/examples/extract_images.rs
new file mode 100644
index 0000000..51afc23
--- /dev/null
+++ b/examples/extract_images.rs
@@ -0,0 +1,31 @@
+use std::io::Write;
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let filename: String = std::env::args()
+        .collect::<Vec<_>>()
+        .get(1)
+        .expect("missing filename")
+        .to_owned();
+    let document = mupdf::document::Document::open(&filename)?;
+
+    let mut image_num: u32 = 0;
+
+    for page in document.pages()? {
+        let text_page = page?.to_text_page(mupdf::text_page::TextPageOptions::PRESERVE_IMAGES)?;
+
+        for block in text_page.blocks() {
+            if let Some(image) = block.image() {
+                let pixmap = image.to_pixmap()?;
+                let mut bytes: Vec<u8> = vec![];
+                pixmap.write_to(&mut bytes, mupdf::pixmap::ImageFormat::PNG)?;
+
+                let mut output_file = std::fs::File::create(format!("output_{}.png", image_num))?;
+                output_file.write_all(&bytes)?;
+
+                image_num += 1;
+            }
+        }
+    }
+
+    Ok(())
+}
diff --git a/examples/extract_text.rs b/examples/extract_text.rs
new file mode 100644
index 0000000..5db52d5
--- /dev/null
+++ b/examples/extract_text.rs
@@ -0,0 +1,21 @@
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let filename: String = std::env::args()
+        .collect::<Vec<_>>()
+        .get(1)
+        .expect("missing filename")
+        .to_owned();
+    let document = mupdf::document::Document::open(&filename)?;
+
+    for page in document.pages()? {
+        let text_page = page?.to_text_page(mupdf::text_page::TextPageOptions::empty())?;
+
+        for block in text_page.blocks() {
+            for line in block.lines() {
+                let chars: String = line.chars().map(|c| c.char().unwrap()).collect();
+                println!("line: {}", chars);
+            }
+        }
+    }
+
+    Ok(())
+}