sc.sh can be used to search packages by component file name.
for example:
./sc.sh xml2-config will output:
candidate:libxml2-dev
./sc.sh ssl will output:
candidate:foxeye [arm64]
candidate:foxeye [armhf]
candidate:foxeye [i386]
candidate:picolisp [not s390x]
candidate:foxeye [ppc64el]
candidate:foxeye [s390x]
candidate:foxeye [amd64]
candidate:fex
candidate:tinymux
candidate:epic4-help