vcf tools

cmd/mergevcf    merge .vcf contacts from stdin into unique contacts (fields stay untouched)
cmd/cleanvcf    rewrite a .vcf stream from stdin as plain UTF-8 vCard 3.0 with name + normalized phone numbers
cmd/showvcf     print a CSV version of all contacts from stdin sorted by last name
internal/vcf    shared library: parsing, writing, merging, sorting, cleaning

Build with make build (binaries in bin/), test with make test.

Pipeline usage:

cat contacts1.vcf contacts2.vcf ... | bin/cleanvcf [--prefix +49] | bin/mergevcf > merged.vcf
cat contacts1.vcf contacts2.vcf ... | bin/cleanvcf [--prefix +49] | bin/mergevcf | bin/showvcf > contacts.csv

Individual tool usage:

bin/cleanvcf [--prefix +49] < input.vcf > clean.vcf
bin/mergevcf < input.vcf > merged.vcf
bin/showvcf < input.vcf > contacts.csv

See REQUIREMENTS.md for the full specification.

Development

podman compose run --rm dev