bzr 1.8 KB

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  1. #!/usr/bin/env bash
  2. # We want to catch any unexpected failure, and exit immediately
  3. set -e
  4. # Download helper for bzr, to be called from the download wrapper script
  5. #
  6. # Options:
  7. # -q Be quiet
  8. # -o FILE Generate archive in FILE.
  9. # -u URI Clone from repository at URI.
  10. # -c CSET Use changeset (or revision) CSET.
  11. # -n NAME Use basename NAME.
  12. #
  13. # Environment:
  14. # BZR : the bzr command to call
  15. verbose=
  16. while getopts "${BR_BACKEND_DL_GETOPTS}" OPT; do
  17. case "${OPT}" in
  18. q) verbose=-q;;
  19. o) output="${OPTARG}";;
  20. u) uri="${OPTARG}";;
  21. c) cset="${OPTARG}";;
  22. n) basename="${OPTARG}";;
  23. :) printf "option '%s' expects a mandatory argument\n" "${OPTARG}"; exit 1;;
  24. \?) printf "unknown option '%s'\n" "${OPTARG}" >&2; exit 1;;
  25. esac
  26. done
  27. shift $((OPTIND-1)) # Get rid of our options
  28. # Caller needs to single-quote its arguments to prevent them from
  29. # being expanded a second time (in case there are spaces in them)
  30. _bzr() {
  31. eval ${BZR} "${@}"
  32. }
  33. # --per-file-timestamps comes with bzr-2.2 (released August 2010),
  34. # so only pass it if bzr is recent enough. We compute versions as:
  35. # major*1000 + minor
  36. bzr_min_version=2002
  37. bzr_version=$(($(bzr --version |
  38. sed -r -n 's/^Bazaar \(bzr\) ([[:digit:]]+)\.([[:digit:]]+)\..*$/\1*1000+\2/p')
  39. ))
  40. # If the version is recent enough, we can generate reproducible
  41. # archives; otherwise, we just hope for the best (as it would
  42. # be downloaded from the BR mirror if what we generate here does
  43. # not match the hash we have for it).
  44. if [ ${bzr_version} -ge ${bzr_min_version} ]; then
  45. timestamp_opt="--per-file-timestamps"
  46. fi
  47. _bzr export ${verbose} --root="'${basename}/'" --format=tgz \
  48. ${timestamp_opt} - "${@}" "'${uri}'" -r "'${cset}'" \
  49. >"${output}"