Restructure native codebase

native/jni/boot/format.cpp

@@ -0,0 +1,110 @@
+#include "format.hpp"
+
+Name2Fmt name2fmt;
+Fmt2Name fmt2name;
+Fmt2Ext fmt2ext;
+
+#define CHECKED_MATCH(s) (len >= (sizeof(s) - 1) && BUFFER_MATCH(buf, s))
+
+format_t check_fmt(const void *buf, size_t len) {
+    if (CHECKED_MATCH(CHROMEOS_MAGIC)) {
+        return CHROMEOS;
+    } else if (CHECKED_MATCH(BOOT_MAGIC)) {
+        return AOSP;
+    } else if (CHECKED_MATCH(VENDOR_BOOT_MAGIC)) {
+        return AOSP_VENDOR;
+    } else if (CHECKED_MATCH(GZIP1_MAGIC) || CHECKED_MATCH(GZIP2_MAGIC)) {
+        return GZIP;
+    } else if (CHECKED_MATCH(LZOP_MAGIC)) {
+        return LZOP;
+    } else if (CHECKED_MATCH(XZ_MAGIC)) {
+        return XZ;
+    } else if (len >= 13 && memcmp(buf, "\x5d\x00\x00", 3) == 0
+            && (((char *)buf)[12] == '\xff' || ((char *)buf)[12] == '\x00')) {
+        return LZMA;
+    } else if (CHECKED_MATCH(BZIP_MAGIC)) {
+        return BZIP2;
+    } else if (CHECKED_MATCH(LZ41_MAGIC) || CHECKED_MATCH(LZ42_MAGIC)) {
+        return LZ4;
+    } else if (CHECKED_MATCH(LZ4_LEG_MAGIC)) {
+        return LZ4_LEGACY;
+    } else if (CHECKED_MATCH(MTK_MAGIC)) {
+        return MTK;
+    } else if (CHECKED_MATCH(DTB_MAGIC)) {
+        return DTB;
+    } else if (CHECKED_MATCH(DHTB_MAGIC)) {
+        return DHTB;
+    } else if (CHECKED_MATCH(TEGRABLOB_MAGIC)) {
+        return BLOB;
+    } else if (len >= 0x28 && memcmp(&((char *)buf)[0x24], ZIMAGE_MAGIC, 4) == 0) {
+        return ZIMAGE;
+    } else {
+        return UNKNOWN;
+    }
+}
+
+const char *Fmt2Name::operator[](format_t fmt) {
+    switch (fmt) {
+        case GZIP:
+            return "gzip";
+        case ZOPFLI:
+            return "zopfli";
+        case LZOP:
+            return "lzop";
+        case XZ:
+            return "xz";
+        case LZMA:
+            return "lzma";
+        case BZIP2:
+            return "bzip2";
+        case LZ4:
+            return "lz4";
+        case LZ4_LEGACY:
+            return "lz4_legacy";
+        case LZ4_LG:
+            return "lz4_lg";
+        case DTB:
+            return "dtb";
+        case ZIMAGE:
+            return "zimage";
+        default:
+            return "raw";
+    }
+}
+
+const char *Fmt2Ext::operator[](format_t fmt) {
+    switch (fmt) {
+        case GZIP:
+        case ZOPFLI:
+            return ".gz";
+        case LZOP:
+            return ".lzo";
+        case XZ:
+            return ".xz";
+        case LZMA:
+            return ".lzma";
+        case BZIP2:
+            return ".bz2";
+        case LZ4:
+        case LZ4_LEGACY:
+        case LZ4_LG:
+            return ".lz4";
+        default:
+            return "";
+    }
+}
+
+#define CHECK(s, f) else if (name == s) return f;
+
+format_t Name2Fmt::operator[](std::string_view name) {
+    if (0) {}
+    CHECK("gzip", GZIP)
+    CHECK("zopfli", ZOPFLI)
+    CHECK("xz", XZ)
+    CHECK("lzma", LZMA)
+    CHECK("bzip2", BZIP2)
+    CHECK("lz4", LZ4)
+    CHECK("lz4_legacy", LZ4_LEGACY)
+    CHECK("lz4_lg", LZ4_LG)
+    else return UNKNOWN;
+}