fuzz/generate-files: support jujutsu

Generally we try not to add special-case logic for weird tools, but this
is a a really simple change and I think that jujutsu is going to become
pretty popular among rust-bitcoin developers.

This is some repeated code which looks like it should be factored out
into a utility function, but we can't really do that because we need to
figure out the workspace root before we can even locate utility functions.

Author: apoelstra

fuzz/cycle.sh

@@ -6,7 +6,7 @@
 # For hfuzz options see https://github.com/google/honggfuzz/blob/master/docs/USAGE.md
 
 set -e
-REPO_DIR=$(git rev-parse --show-toplevel)
+REPO_DIR=$(git rev-parse --show-toplevel || jj workspace root)
 # can't find the file because of the ENV var
 # shellcheck source=/dev/null
 source "$REPO_DIR/fuzz/fuzz-util.sh"

fuzz/fuzz-util.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-REPO_DIR=$(git rev-parse --show-toplevel)
+REPO_DIR=$(git rev-parse --show-toplevel || jj workspace root)
 
 # Sort order is effected by locale. See `man sort`.
 # > Set LC_ALL=C to get the traditional sort order that uses native byte values.

fuzz/fuzz.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -ex
 
-REPO_DIR=$(git rev-parse --show-toplevel)
+REPO_DIR=$(git rev-parse --show-toplevel || jj workspace show)
 
 # can't find the file because of the ENV var
 # shellcheck source=/dev/null

fuzz/generate-files.sh

@@ -2,7 +2,7 @@
 
 set -e
 
-REPO_DIR=$(git rev-parse --show-toplevel)
+REPO_DIR=$(git rev-parse --show-toplevel || jj workspace root)
 
 # can't find the file because of the ENV var
 # shellcheck source=/dev/null