From 187d7cb4001fd0820d5eef53aeb593fb0db25802 Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Thu, 7 Mar 2019 17:06:11 +0100
Subject: [PATCH] GTextEditor: Add write_to_file(String path) :^)

---
 Applications/TextEditor/main.cpp |  5 +++--
 LibGUI/GTextEditor.cpp           | 35 ++++++++++++++++++++++++++++++++
 LibGUI/GTextEditor.h             |  2 ++
 3 files changed, 40 insertions(+), 2 deletions(-)

diff --git a/Applications/TextEditor/main.cpp b/Applications/TextEditor/main.cpp
index 2180e4db32..1fd5e3e3b8 100644
--- a/Applications/TextEditor/main.cpp
+++ b/Applications/TextEditor/main.cpp
@@ -66,8 +66,9 @@ int main(int argc, char** argv)
         dbgprintf("FIXME: Implement File/Open");
     });
 
-    auto save_action = GAction::create("Save document", { Mod_Ctrl, Key_S }, GraphicsBitmap::load_from_file(GraphicsBitmap::Format::RGBA32, "/res/icons/save16.rgb", { 16, 16 }), [] (const GAction&) {
-        dbgprintf("FIXME: Implement File/Save");
+    auto save_action = GAction::create("Save document", { Mod_Ctrl, Key_S }, GraphicsBitmap::load_from_file(GraphicsBitmap::Format::RGBA32, "/res/icons/save16.rgb", { 16, 16 }), [&] (const GAction&) {
+        dbgprintf("Writing document to '%s'\n", path.characters());
+        text_editor->write_to_file(path);
     });
 
     auto menubar = make<GMenuBar>();
diff --git a/LibGUI/GTextEditor.cpp b/LibGUI/GTextEditor.cpp
index 72d6321735..1cf4dcc5b7 100644
--- a/LibGUI/GTextEditor.cpp
+++ b/LibGUI/GTextEditor.cpp
@@ -3,6 +3,9 @@
 #include <LibGUI/GFontDatabase.h>
 #include <SharedGraphics/Painter.h>
 #include <Kernel/KeyCode.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdio.h>
 
 GTextEditor::GTextEditor(GWidget* parent)
     : GWidget(parent)
@@ -429,3 +432,35 @@ void GTextEditor::Line::truncate(int length)
     m_text.resize(length + 1);
     m_text.last() = 0;
 }
+
+bool GTextEditor::write_to_file(const String& path)
+{
+    int fd = open(path.characters(), O_WRONLY | O_CREAT, 0666);
+    if (fd < 0) {
+        perror("open");
+        return false;
+    }
+    for (int i = 0; i < m_lines.size(); ++i) {
+        auto& line = *m_lines[i];
+        if (line.length()) {
+            ssize_t nwritten = write(fd, line.characters(), line.length());
+            if (nwritten < 0) {
+                perror("write");
+                close(fd);
+                return false;
+            }
+        }
+        if (i != m_lines.size() - 1) {
+            char ch = '\n';
+            ssize_t nwritten = write(fd, &ch, 1);
+            if (nwritten != 1) {
+                perror("write");
+                close(fd);
+                return false;
+            }
+        }
+    }
+
+    close(fd);
+    return true;
+}
diff --git a/LibGUI/GTextEditor.h b/LibGUI/GTextEditor.h
index 1c905512b2..a390d87da6 100644
--- a/LibGUI/GTextEditor.h
+++ b/LibGUI/GTextEditor.h
@@ -49,6 +49,8 @@ public:
     GTextPosition cursor() const { return m_cursor; }
     int glyph_width() const { return font().glyph_width('x'); }
 
+    bool write_to_file(const String& path);
+
 private:
     virtual void paint_event(GPaintEvent&) override;
     virtual void resize_event(GResizeEvent&) override;