[codex] clipboard: add Mojo desktop clipboard helpers - #1
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…mbols + hash + diff) New MOJO-libs lib for indexing/tracking a project tree without re-reading every file. A snapshot captures the file tree (size+lines), a per-extension language table, a top-level symbol map (Mojo struct/trait/def/fn, Python class/def, Rust fn/struct/enum/trait/impl), and an FNV-1a-64 content hash per source file so two snapshots can be diffed (added/removed/changed). - snapshot/snapshot.mojo : FileEntry/Config/Snapshot, walk+excludes, hashing, symbol extraction, markdown + TSV-manifest rendering - snapshot/diff.mojo : parse two TSV manifests, report added/removed/changed - snapshot/cli.mojo : `snapshot <dir> [-o PREFIX] [--brief]` / `--diff a b` - snapshot/tests/ : 9 pure-function units (9/9 pass) - snapshot/README.md : usage + API 100% Mojo + libc (std.os walk, std.ffi time, pure-Mojo string work). Binary / files >2 MiB recorded size-only (no read) — scans a 6.6 GB tree in ~1 s. Build from repo root with -I . ; snapshot/snapshot binary is gitignored. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
… console text)
Three capture sources behind one CLI/lib:
- x11: X11 desktop (root window or --rect) -> RGB -> PNG. Verified live (matches
xwininfo dims; PNG decodes in PIL as correct-color desktop). Xlib's opaque
Display* segfaults across Mojo FFI, so the few Xlib calls live in a C floor
(cshim/screen_shim.c) per the repo's "C for the gaps" pattern; Mojo drives it.
- fb: Linux framebuffer /dev/fb0 (geometry from sysfs) -> RGB -> PNG, BGRX/BGR.
- vcsa: virtual-console text grid /dev/vcsaN -> text.
PNG output reuses the image/ lib. fb/vcsa decode logic is unit-tested (4/4);
their live reads fail loud without the video/tty group.
Files: screen/{x11,framebuffer,vcsa,cli,__init__}.mojo, cshim/screen_shim.c,
tests/screen_test.mojo, README.md. Build the shim with
`gcc -shared -fPIC -O2 screen/cshim/screen_shim.c -o screen/cshim/screen_shim.so -lX11`
and run from repo root (-I .); .so + binary are gitignored.
FFI gotcha (1.0.0b1): OwnedDLHandle is destroyed ASAP (dlclose) at last use, so
the 2nd FFI call segfaults — every function ends with `_ = lib^` to hold it alive.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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What changed
clipboard/package for Linux Mojo apps.wl-copy/wl-paste, X11xclip, and X11xsel.clipboard/README.md, updated the root README, and updated the chat UI planning doc to list clipboard copy/paste as available.Why
Mojo apps in this repo stack needed a reusable clipboard layer for copying generated paths, prompts, logs, and selected text without app-local shell snippets.
Notes
Payload text is streamed over provider stdin/stdout via libc
popen/fread/fwrite; it is not interpolated into provider command strings. The current production scope is Linux text clipboard support. macOS/Windows and rich MIME clipboard formats are not implemented.Validation
pixi run --manifest-path /home/alex/mojodiffusion/pixi.toml mojo run -I . -I /home/alex/MOJO-libs /home/alex/MOJO-libs/clipboard/tests/clipboard_test.mojo->14 passed, 0 failedCLIPBOARD_TEST_REAL=1 pixi run --manifest-path /home/alex/mojodiffusion/pixi.toml mojo run -I . -I /home/alex/MOJO-libs /home/alex/MOJO-libs/clipboard/tests/clipboard_test.mojo-> detectedxsel,16 passed, 0 failedgit diff --checkpassed