diff options
Diffstat (limited to 'tools/check_for_upgrade.sh')
| -rw-r--r-- | tools/check_for_upgrade.sh | 29 |
1 files changed, 13 insertions, 16 deletions
diff --git a/tools/check_for_upgrade.sh b/tools/check_for_upgrade.sh index 8264762b6..70cd21f84 100644 --- a/tools/check_for_upgrade.sh +++ b/tools/check_for_upgrade.sh @@ -58,23 +58,20 @@ function is_update_available() { local local_head local_head=$(git -C "$ZSH" rev-parse $branch 2>/dev/null) || return 0 - # Get remote HEAD. If we can't get it assume there are updates unless there is no connection: - # - curl: 6 (could not resolve) or 7 (could not connect) - # - wget: 4 (network unreachable) - # - fetch: 1 (no route to host) - local remote_head ret + # Get remote HEAD. If no suitable command is found assume there are updates + # On any other error, skip the update (connection may be down) + local remote_head remote_head=$( - curl -fsSL -H 'Accept: application/vnd.github.v3.sha' $api_url 2>/dev/null || { - [[ $? -eq 6 || $? -eq 7 ]] && exit 1 - } || wget -O- --header='Accept: application/vnd.github.v3.sha' $api_url 2>/dev/null || { - [[ $? -eq 4 ]] && exit 1 - } || HTTP_ACCEPT='Accept: application/vnd.github.v3.sha' fetch -o - $api_url 2>/dev/null || { - [[ $? -eq 1 ]] && exit 1 - } || exit 0 - ) - - # If can't fetch remote HEAD, return exit code - ret=$?; [[ -n "$remote_head" ]] || return $ret + if (( ${+commands[curl]} )); then + curl -fsSL -H 'Accept: application/vnd.github.v3.sha' $api_url 2>/dev/null + elif (( ${+commands[wget]} )); then + wget -O- --header='Accept: application/vnd.github.v3.sha' $api_url 2>/dev/null + elif (( ${+commands[fetch]} )); then + HTTP_ACCEPT='Accept: application/vnd.github.v3.sha' fetch -o - $api_url 2>/dev/null + else + exit 0 + fi + ) || return 1 # Compare local and remote HEADs [[ "$local_head" != "$remote_head" ]] |