init projectmycelium

scripts/dev/cargo-errors.sh

@@ -0,0 +1,65 @@
+#!/usr/bin/env bash
+# Summarize Rust compiler errors into a clean, readable log.
+# Prefers cargo JSON + jq; falls back to sed/awk parser if jq is unavailable.
+# Output file: /tmp/cargo_errors_only.log (override with OUT env var)
+
+set -euo pipefail
+
+OUT=${OUT:-/tmp/cargo_errors_only.log}
+PROJECT_ROOT=$(git rev-parse --show-toplevel 2>/dev/null || echo "")
+if [[ -n "$PROJECT_ROOT" ]]; then
+  cd "$PROJECT_ROOT"
+fi
+
+# Ensure colorless output from cargo to avoid ANSI in fallback
+export CARGO_TERM_COLOR=never
+
+# Function: JSON mode (best)
+run_json_mode() {
+  # Capture cargo's exit code from the first command in the pipeline
+  set +e
+  set +o pipefail
+  cargo check --message-format=json -q "$@" 2>/dev/null \
+    | jq -r 'select(.reason=="compiler-message" and .message.level=="error") | .message.rendered' \
+    | tee "$OUT"
+  local cargo_status=${PIPESTATUS[0]}
+  set -o pipefail
+  set -e
+  return "$cargo_status"
+}
+
+# Function: Fallback parser (no jq required)
+run_fallback_mode() {
+  # We intentionally capture stderr (diagnostics) and stdout
+  set +e
+  set +o pipefail
+  cargo check -q "$@" 2>&1 \
+    | sed -r 's/\x1B\[[0-9;]*[mK]//g' \
+    | awk '
+      BEGIN{inerr=0}
+      /^warning:/{inerr=0; next}
+      /^error(\[|:)/{inerr=1}
+      # Drop cargo/rustc warning summaries while still inside an error block
+      inerr && /[0-9]+ warnings? emitted/ {next}
+      inerr{print}
+    ' \
+    | tee "$OUT"
+  local cargo_status=${PIPESTATUS[0]}
+  set -o pipefail
+  set -e
+  return "$cargo_status"
+}
+
+status=0
+if command -v jq >/dev/null 2>&1; then
+  if ! run_json_mode "$@"; then
+    status=$?
+  fi
+else
+  echo "INFO: jq not found; using fallback parser (install jq for best results)." >&2
+  if ! run_fallback_mode "$@"; then
+    status=$?
+  fi
+fi
+
+exit "$status"