gmp
e019a950b1
Chromium owns scroll/compositor/lazy-load/image-cache; Rust owns scan/SQLite/thumbnail-decode behind a gallery:// custom protocol. Hard-won gotchas (see in-code comments): - Android: no native custom-scheme support → wry rewrites the URL to http://gallery.localhost/... (custom_protocol_workaround). The JS MUST request that form; the handler receives the reverted gallery://localhost/... and must strip the authority. - tauri_build::build() in build.rs must run UNCONDITIONALLY (build scripts run on the host: a cfg(target_os) gate silently disables it, which skips the rustc-cfg=mobile emission → no mobile_entry_point → .so with no JNI symbols → UnsatisfiedLinkError). - build.rs must list frontend files for rerun-if-changed (a dir-level directive only watches the dir mtime, not content edits) — the .so bakes the frontend at compile time and cargo otherwise ships stale UI with a 'successful' build. - logcat drops ~75% of lines under load: use the file trace. - fetch() is CORS-restricted (page origin http://tauri.localhost); <img> is not — add ACAO:* anyway. Emulator (5853 real files): grid renders, lazy thumbs via gallery:// with on-disk cache (87 files 35-72KB), FR log clean at 60Hz, viewer opens full-res with compositor-only pan/zoom. The single 'broken' cell is a 17-byte fake test JPEG (correct behavior).
77 lines
3.4 KiB
Bash
Executable File
77 lines
3.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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# cargo shim: intercept `cargo tauri android android-studio-script` (the
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# hidden subcommand the tauri gradle plugin's rustBuild task runs) and
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# reproduce its effect with a PLAIN cargo build.
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#
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# Why: the cargo-tauri CLI (every subcommand that builds a Rust interface)
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# starts an inotify debouncer on Cargo.toml. This host's per-user inotify
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# WATCH quota (65536) is exhausted by the user's standalone syncthing
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# (65,482 watches), so inotify_add_watch → ENOSPC and the CLI dies before
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# doing anything. Plain cargo build uses no inotify.
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#
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# android-studio-script's output (verified on the tttest build): the lib .so
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# placed at gen/android/app/src/main/jniLibs/<abi-dir>/lib<lib>.so.
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set -euo pipefail
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REAL_CARGO="$HOME/.cargo/bin/cargo"
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PROJ=/mnt/Backup/prog/android/gallery/harnesses/gtauri
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NDK="$HOME/android-sdk/ndk/27.0.12077973"
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if [ "${1:-}" = "tauri" ] && [ "${2:-}" = "android" ] && [ "${3:-}" = "android-studio-script" ]; then
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shift 3
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release="" ; target="x86_64"
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while [ $# -gt 0 ]; do
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case "$1" in
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--release) release=1 ;;
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--target) shift; target="${1:-x86_64}" ;;
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esac
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shift
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done
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case "$target" in
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x86_64) TRIPLE=x86_64-linux-android; ABI_DIR=x86_64; CLANG=x86_64-linux-android24-clang ;;
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aarch64) TRIPLE=aarch64-linux-android; ABI_DIR=arm64-v8a; CLANG=aarch64-linux-android24-clang ;;
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armv7) TRIPLE=armv7-linux-androideabi; ABI_DIR=armeabi-v7a; CLANG=armv7a-linux-androideabi24-clang ;;
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i686) TRIPLE=i686-linux-android; ABI_DIR=x86; CLANG=i686-linux-android24-clang ;;
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*) echo "shim: unknown target $target" >&2; exit 1 ;;
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esac
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prof="debug"; [ -n "$release" ] && prof="release"
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echo "gtauri shim: cargo build $TRIPLE $prof (bypassing cargo-tauri)"
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# env var names are CARGO_TARGET_<UPPER_TRIPLE>_... with HYPHENS → UNDERSCORES
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UPPER=$(echo "$TRIPLE" | tr 'a-z-' 'A-Z_')
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# cc crate (libsqlite3-sys bundled, turbojpeg cmake) wants CC_<lower_triple>
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LOWER=$(echo "$UPPER" | tr 'A-Z' 'a-z')
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NDK_BIN=$NDK/toolchains/llvm/prebuilt/linux-x86_64/bin
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case "$target" in x86_64) ABI=x86_64 ;; aarch64) ABI=arm64-v8a ;; armv7) ABI=armeabi-v7a ;; i686) ABI=x86 ;; esac
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CCNAME=$CLANG # any valid C compiler for the target; API level is moot for cc
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env \
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"CARGO_TARGET_${UPPER}_LINKER=$NDK_BIN/$CLANG" \
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"CARGO_TARGET_${UPPER}_RUSTFLAGS=-Clink-arg=-landroid -Clink-arg=-llog -Clink-arg=-lOpenSLES" \
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"CC_${LOWER}=$NDK_BIN/$CCNAME" \
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"CXX_${LOWER}=$NDK_BIN/${CCNAME}++" \
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"AR_${LOWER}=$NDK_BIN/llvm-ar" \
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"CC=$NDK_BIN/$CCNAME" \
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"CXX=$NDK_BIN/${CCNAME}++" \
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"CMAKE_TOOLCHAIN_FILE=$NDK/build/cmake/android.toolchain.cmake" \
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"ANDROID_PLATFORM=android-26" \
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"ANDROID_STL=c++_static" \
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"ANDROID_ABI=$ABI" \
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"TURBOJPEG_STATIC=1" \
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"$REAL_CARGO" build --package gtauri --manifest-path "$PROJ/Cargo.toml" \
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--target "$TRIPLE" --features "tauri/custom-protocol" --lib --"$prof"
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SO="$PROJ/target/$TRIPLE/$prof/libgtauri_lib.so"
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[ -f "$SO" ] || { echo "shim: $SO not produced" >&2; exit 1; }
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DEST="$PROJ/gen/android/app/src/main/jniLibs/$ABI_DIR/libgtauri_lib.so"
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mkdir -p "$(dirname "$DEST")"
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# /mnt/Backup's stat identity is unreliable here (cp still reports
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# "same file"), so just break any link and copy fresh:
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rm -f "$DEST"
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cp "$SO" "$DEST"
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echo "gtauri shim: .so -> jniLibs/$ABI_DIR"
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exit 0
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fi
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exec "$REAL_CARGO" "$@"
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