fixed wrong left padding in the books with different and sometimes wrong inner structure

shared/src/commonMain/kotlin/net/sergeych/toread/fb2/Fb2XmlEncoding.kt

@@ -6,6 +6,7 @@ internal object Fb2XmlEncoding {
     fun decodeXml(bytes: ByteArray): String =
         when (declaredEncoding(bytes)?.lowercase()) {
             "windows-1251" -> decodeWindows1251(bytes)
+            "windows-1252" -> decodeWindows1252(bytes)
             else -> bytes.decodeToString()
         }
 
@@ -30,6 +31,12 @@ internal object Fb2XmlEncoding {
         }
     }
 
+    private fun decodeWindows1252(bytes: ByteArray): String = buildString(bytes.size) {
+        bytes.forEach { byte ->
+            append(windows1252Char(byte.toInt() and 0xff))
+        }
+    }
+
     private fun windows1251Char(value: Int): Char =
         when (value) {
             in 0x00..0x7f -> value.toChar()
@@ -100,4 +107,43 @@ internal object Fb2XmlEncoding {
             in 0xc0..0xff -> (0x0410 + value - 0xc0).toChar()
             else -> '\uFFFD'
         }
+
+    private fun windows1252Char(value: Int): Char =
+        when (value) {
+            in 0x00..0x7f -> value.toChar()
+            0x80 -> '\u20ac'
+            0x81 -> '\uFFFD'
+            0x82 -> '\u201a'
+            0x83 -> '\u0192'
+            0x84 -> '\u201e'
+            0x85 -> '\u2026'
+            0x86 -> '\u2020'
+            0x87 -> '\u2021'
+            0x88 -> '\u02c6'
+            0x89 -> '\u2030'
+            0x8a -> '\u0160'
+            0x8b -> '\u2039'
+            0x8c -> '\u0152'
+            0x8d -> '\uFFFD'
+            0x8e -> '\u017d'
+            0x8f -> '\uFFFD'
+            0x90 -> '\uFFFD'
+            0x91 -> '\u2018'
+            0x92 -> '\u2019'
+            0x93 -> '\u201c'
+            0x94 -> '\u201d'
+            0x95 -> '\u2022'
+            0x96 -> '\u2013'
+            0x97 -> '\u2014'
+            0x98 -> '\u02dc'
+            0x99 -> '\u2122'
+            0x9a -> '\u0161'
+            0x9b -> '\u203a'
+            0x9c -> '\u0153'
+            0x9d -> '\uFFFD'
+            0x9e -> '\u017e'
+            0x9f -> '\u0178'
+            in 0xa0..0xff -> value.toChar()
+            else -> '\uFFFD'
+        }
 }

shared/src/commonTest/kotlin/net/sergeych/toread/fb2/Fb2FormatTest.kt

@@ -60,6 +60,23 @@ class Fb2FormatTest {
         assertEquals("Привет, мир.", book.sections.single().paragraphs.single())
     }
 
+    @Test
+    fun parsesWindows1252PlainXml() {
+        val book = Fb2Format.parse(windows1252Xml.encodeWindows1252(), "legacy.fb2")
+
+        assertEquals("The “Test” Book", book.title)
+        assertEquals("It’s 25€ for café — OK.", book.sections.single().paragraphs.single())
+    }
+
+    @Test
+    fun parsesWindows1252StoredZip() {
+        val zip = Fb2Zip.createStoredZip("legacy.fb2", windows1252Xml.encodeWindows1252())
+        val book = Fb2Format.parse(zip, "legacy.fb2.zip")
+
+        assertEquals("The “Test” Book", book.title)
+        assertEquals("It’s 25€ for café — OK.", book.sections.single().paragraphs.single())
+    }
+
     @Test
     fun fallsBackToUtf8ForUnknownEncoding() {
         val xml = sampleXml.replace("encoding=\"UTF-8\"", "encoding=\"KOI8-R\"")
@@ -273,6 +290,26 @@ class Fb2FormatTest {
         </FictionBook>
     """.trimIndent()
 
+    private val windows1252Xml = """
+        <?xml version="1.0" encoding="windows-1252"?>
+        <FictionBook xmlns="http://www.gribuser.ru/xml/fictionbook/2.0" xmlns:xlink="http://www.w3.org/1999/xlink">
+          <description>
+            <title-info>
+              <author><nickname>Author</nickname></author>
+              <book-title>The “Test” Book</book-title>
+              <lang>en</lang>
+            </title-info>
+            <document-info>
+              <author><nickname>Toread</nickname></author>
+              <date>2026-05-12</date>
+              <id>legacy-1252</id>
+              <version>1.0</version>
+            </document-info>
+          </description>
+          <body><section><p>It’s 25€ for café — OK.</p></section></body>
+        </FictionBook>
+    """.trimIndent()
+
     private val notesXml = """
         <?xml version="1.0" encoding="UTF-8"?>
         <FictionBook xmlns="http://www.gribuser.ru/xml/fictionbook/2.0" xmlns:l="http://www.w3.org/1999/xlink">
@@ -314,4 +351,23 @@ class Fb2FormatTest {
             }
             value.toByte()
         }
+
+    private fun String.encodeWindows1252(): ByteArray =
+        ByteArray(length) { index ->
+            val char = this[index]
+            val value = when {
+                char.code <= 0x7f -> char.code
+                char.code in 0xa0..0xff -> char.code
+                char == '€' -> 0x80
+                char == '‘' -> 0x91
+                char == '’' -> 0x92
+                char == '“' -> 0x93
+                char == '”' -> 0x94
+                char == '–' -> 0x96
+                char == '—' -> 0x97
+                char == '™' -> 0x99
+                else -> error("Test character $char is not mapped to windows-1252")
+            }
+            value.toByte()
+        }
 }