From 745f769da19c891542c3b3048ed57d9ecdc3e0db Mon Sep 17 00:00:00 2001
From: Sam Bingner <sam@bingner.com>
Date: Fri, 5 Apr 2019 13:23:24 -1000
Subject: Support for detecting what packages are depends

---
 autodeps.sh | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 control.sh  |  1 +
 2 files changed, 78 insertions(+)
 create mode 100644 autodeps.sh

diff --git a/autodeps.sh b/autodeps.sh
new file mode 100644
index 000000000..3402c96b4
--- /dev/null
+++ b/autodeps.sh
@@ -0,0 +1,77 @@
+#!/bin/bash
+export PATH=${PKG_BASE}/util:$PATH
+DEPSDIR="${PKG_STAT}"/deps
+if [ ! -d "${DEPSDIR}" ]; then
+    mkdir "${DEPSDIR}"
+fi
+rm -f "${PKG_STAT}"/dest-deps || true
+declare -a PKG_DPKG_DEPS
+declare -a PKG_MISSING_DEPS
+for dep in "${PKG_DEPS[@]}"; do
+    # XXX: bother dealing with weird arguments?
+    #DEPNAME=$(basename "${dep}" .dep)
+    if  [ ! -z "${dep##_*}" ]; then
+        PKG_DPKG_DEPS[${#PKG_DPKG_DEPS[@]}]="${dep}"
+    fi
+done
+
+if [[ -e ${PKG_DATA}/_metadata/depends ]]; then
+    IFS=, read -a DEPENDS < "${PKG_DATA}/_metadata/depends"
+    for dep in "${DEPENDS[@]}"; do
+        dep="${dep#[[:space:]]}"
+        PKG_DPKG_DEPS[${#PKG_DPKG_DEPS[@]}]="${dep%%[[:space:]]*}"
+    done
+fi
+
+declare -a deps
+deps=($(find -L "${PKG_DATA}"/_metadata -name '*.dep' | sed -e 's/^.*\///' -e 's/\.dep$//' | sort -u))
+
+#echo Current Depends: $(IFS=','; echo "${PKG_DPKG_DEPS[*]}" | sed -e 's/,/, /g')
+for bin in $(find "${PKG_DEST}" -type f \( -perm -0100 -o -name '*.dylib' -o -name '*.so' \) -print0); do
+    case "$(file "${bin}")" in (\
+            *': Mach-O fat file with '*([0-9])' architecture' |\
+            *': '*(setuid |setgid )'Mach-O 64-bit executable arm64' |\
+            *': Mach-O '?(64-bit )'dynamically linked shared library '@(acorn|arm64) |\
+            *': Mach-O '?(64-bit )'bundle '@(acorn|arm64) |\
+            *': '*(setuid |setgid )'Mach-O executable acorn' \
+        )
+        ;; 
+        (*) continue
+        ;;
+    esac
+
+    for dylib in $(otool  -L "${bin}"  | grep -E '^\s' | sed -e 's/^\s*//' -e 's/ .*//'); do
+        if [ "${dylib}" = "${bin#${PKG_DEST}}" ]; then continue; fi
+        shopt -u nullglob
+
+        DEP_PKG="$(ls "${PKG_BASE}"/dest/${PKG_ARCH}/${PKG_CFTARG}/@(${PKG_NAME}|$(IFS='|'; echo "${PKG_DPKG_DEPS[*]}"'|'"${PKG_MISSING_DEPS[*]}"))/"$dylib" 2>/dev/null | sed -e "s|.*/${PKG_ARCH}/${PKG_CFTARG}//*||" -e 's|/.*||' | grep -v '^_')"
+        if [ -z "${DEP_PKG}" ]; then
+            DEP_PKG="$(ls "${PKG_BASE}"/dest/${PKG_ARCH}/${PKG_CFTARG}/@($(IFS='|'; echo "${deps[*]}"))/"$dylib" 2>/dev/null | sed -e "s|.*/${PKG_ARCH}/${PKG_CFTARG}//*||" -e 's|/.*||')"
+            if [ -z "${DEP_PKG}" ]; then continue; fi
+            if [ -z "${DEB_PKG%_*}" ]; then
+                DEP_PKG=$(ls "${PKG_BASE}"/dest/${PKG_ARCH}/${PKG_CFTARG}/*/"$dylib" 2>/dev/null | sed -e "s|.*/${PKG_ARCH}/${PKG_CFTARG}//*||" -e 's|/.*||' | grep -v '^_')
+            fi
+            if [ "${DEP_PKG#*[[:space:]]}" != "${DEP_PKG}" ]; then
+                echo "Error: found multiple possible matches for ${dylib}: $(echo "${DEP_PKG}" | tr '\n' ',' | sed -e 's/,\s*$//')" >&2
+                echo "Please add one as a depend or clean up old packages from dest/" >&2
+                exit 1
+            fi
+            if [ ! -z "${DEP_PKG}" ]; then
+                PKG_MISSING_DEPS[${#PKG_MISSING_DEPS[@]}]="${DEP_PKG}"
+                if [ ! -e "${PKG_DATA}"/_metadata/autodeps ]; then
+                    echo WARNING: found dependency upon ${DEP_PKG} which is not yet depended upon >&2
+                fi
+            fi
+        fi
+        shopt -s nullglob
+    done 
+done
+if [ ${#PKG_MISSING_DEPS[@]} -gt 0 ]; then
+    if [ ! -e "${PKG_DATA}"/_metadata/autodeps ]; then
+        echo WARNING: Missing Depends: $(IFS=','; echo "${PKG_MISSING_DEPS[*]}" | sed -e 's/,/, /g') >&2
+        echo WARNING: Either enable autodeps or add to depends >&2
+    else
+        PKG_DEPS=("${PKG_DEPS[@]}" "${PKG_MISSING_DEPS[*]}")
+    fi
+fi
+#echo Final Depends: $(IFS=','; echo "${PKG_DPKG_DEPS[*]}" | sed -e 's/,/, /g')
diff --git a/control.sh b/control.sh
index 513e679eb..bc88ef2b1 100755
--- a/control.sh
+++ b/control.sh
@@ -94,6 +94,7 @@ else
 fi
 
 if [[ ! -e ${PKG_DATA}/_metadata/depends_ ]]; then
+    . "${PKG_BASE}/autodeps.sh"
     unset comma
     for dep in "${PKG_DEPS[@]}"; do
         if [[ ${dep} == _* ]]; then
-- 
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