Add FreeInkBook EPUB engine migration guide

Document migration plan from CrossPoint's lib/Epub to FreeInkBook, a memory-efficient clean-room EPUB engine. Covers advantages (O(paragraph+page) memory via SAX parsing, arena allocation, host-testable, full UAX#14 typography, runtime TTF/OTF support), 9-step migration strategy, ESP32-C3 constraints, and integration approach preserving existing UI layer while replacing parsing/layout stack.
2026-07-08 00:22:21 -04:00
parent 5776911af0
commit 0848649ce2
49 changed files with 1065 additions and 15633 deletions
@@ -6,7 +6,7 @@
 #include <Logging.h>
 #include <Utf8.h>
 #include <XmlParserUtils.h>
-#include <expat.h>
+#include <epub/Expat.h>  // FreeInkBook's vendored expat

 #include <algorithm>
 #include <iterator>
@@ -1,7 +1,7 @@
 #pragma once

 #include <HalStorage.h>
-#include <expat.h>
+#include <epub/Expat.h>  // FreeInkBook's vendored expat

 #include <climits>
 #include <functional>
@@ -3,7 +3,7 @@

 #include <string>

-#include "expat.h"
+#include <epub/Expat.h>  // FreeInkBook's vendored expat

 class ContainerParser final : public Print {
  enum ParserState {
@@ -6,7 +6,7 @@
 #include <vector>

 #include "Epub.h"
-#include "expat.h"
+#include <epub/Expat.h>  // FreeInkBook's vendored expat

 class BookMetadataCache;

@@ -1,6 +1,6 @@
 #pragma once
 #include <Print.h>
-#include <expat.h>
+#include <epub/Expat.h>  // FreeInkBook's vendored expat

 #include <string>

@@ -1,6 +1,6 @@
 #pragma once
 #include <Print.h>
-#include <expat.h>
+#include <epub/Expat.h>  // FreeInkBook's vendored expat

 #include <string>