diff options
| -rw-r--r-- | krebs/5pkgs/simple/nixos-format-error.nix | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/krebs/5pkgs/simple/nixos-format-error.nix b/krebs/5pkgs/simple/nixos-format-error.nix new file mode 100644 index 000000000..14066efb1 --- /dev/null +++ b/krebs/5pkgs/simple/nixos-format-error.nix @@ -0,0 +1,105 @@ +{ pkgs }: + +pkgs.writeGawk "nixos-format-error" '' + # usage: nixos-rebuild ... 2>&1 | nixos-format-error + + function out() { + print + next + } + + BEGIN { + IDLE = 0 + ACTIVE = 1 + PASSIVE = 2 + ERROR = 3 + + start_state = IDLE + + state = start_state + } + + END { + if (trace_count) + for (i = trace_count - 1; i >= 0; i--) + print trace[i] + } + + state == PASSIVE { + out() + } + + state == IDLE { + if ($0 == "building the system configuration...") { + state = ACTIVE + } + out() + } + + state == ACTIVE { + if ($1 == "error:") { + state = ERROR + sub(/^/,"\x1b[31;1m"); sub(/$/,"\x1b[m") + trace[trace_count++] = $0 + + "stty -F /dev/tty size" |& getline + COLUMNS = gensub(/.* ([0-9]+)$/, "\\1", "1") + + next + } + if ($0 ~ /^these [0-9]+ derivations will be built:/) { + state = PASSIVE + } + if ($0 == "activating the configuration...") { + state = PASSIVE + } + out() + } + + state == ERROR { + + if ($0 ~ /^\s*at /) { + location = gensub(/^\s*at (.*):$/,"\\1","1") + content = "" + lnumcol = gensub(/^.*:([0-9]+:[0-9]+)$/,"\\1","1",location) + lnum = gensub(/:.*/,"","1",lnumcol) + col = gensub(/.*:/,"","1",lnumcol) + next + } + + if ($1 == lnum "|") { + content = gensub(/^\s*[0-9]+\|(.*)/,"\\1","1") + + location = sprintf("%50s", location) + + preview_size = COLUMNS - length(location " ") + + prefix = gensub(/^\s*/,"","1",substr(content, 1, col)) + infix = gensub(/^([0-9a-zA-Z]+|.).*$/, "\\1", "1", substr(content, col + 1)) + suffix = substr(content, col + length(infix) + 1) + + if (length(prefix infix suffix) > preview_size) { + n = (preview_size - length(infix)) / 2 - length(" ") + prefix = substr(prefix, length(prefix) - n + 1) + if (prefix != "") { prefix = "…" prefix } + suffix = substr(suffix, 1, n) + if (suffix != "") { suffix = suffix "…" } + } + + preview = \ + "\x1b[38;5;244m" prefix "\x1b[m" \ + "\x1b[38;5;230m" infix "\x1b[m" \ + "\x1b[38;5;244m" suffix "\x1b[m" + + trace[trace_count++] = location " " preview + next + } + + if ($0 == "") next + if ($0 ~ /^\s*… (from|while)/) next + if ($0 ~ /^\s*([0-9]*)\|/) next + + trace[trace_count++] = $0 + next + } +'' |