build: extract make "functions" into scripts

we'll want to use these for the meson builds, and probably eventually
rewrite them in something that isn't plain shell. diffoscope confirms
that out/share and doc/share are equal before and after these changes

Change-Id: I49aa418fc8615cad86d67328e08c28a7405ec952

1 files changed, 12 insertions, 0 deletions

diff --git a/doc/manual/process-includes.sh b/doc/manual/process-includes.sh
new file mode 100755
index 000000000..6d75710ad
--- /dev/null
+++ b/doc/manual/process-includes.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+set -euo pipefail
+
+# re-implement mdBook's include directive to make it usable for terminal output and for proper @docroot@ substitution
+(grep '{{#include' "$1" || true) | while read -r line; do
+    filename="$(dirname "$1")/$(printf "$line" | sed 's/{{#include \(.*\)}}/\1/')"
+    test -f "$filename" || ( echo "#include-d file '$filename' does not exist." >&2; exit 1; )
+    matchline="$(printf "$line" | sed 's|/|\\/|g')"
+    sed -i "/$matchline/r $filename" "$2"
+    sed -i "s/$matchline//" "$2"
+done