106 lines
2.3 KiB
Nix
106 lines
2.3 KiB
Nix
{ pkgs }:
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pkgs.writeGawkBin "nixos-format-error" ''
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# usage: nixos-rebuild ... 2>&1 | nixos-format-error
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function out() {
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print
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next
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}
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BEGIN {
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IDLE = 0
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ACTIVE = 1
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PASSIVE = 2
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ERROR = 3
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start_state = IDLE
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state = start_state
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}
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END {
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if (trace_count)
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for (i = trace_count - 1; i >= 0; i--)
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print trace[i]
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}
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state == PASSIVE {
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out()
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}
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state == IDLE {
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if ($0 == "building the system configuration...") {
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state = ACTIVE
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}
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out()
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}
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state == ACTIVE {
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if ($1 == "error:") {
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state = ERROR
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sub(/^/,"\x1b[31;1m"); sub(/$/,"\x1b[m")
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trace[trace_count++] = $0
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"stty -F /dev/tty size" |& getline
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COLUMNS = gensub(/.* ([0-9]+)$/, "\\1", "1")
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next
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}
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if ($0 ~ /^these [0-9]+ derivations will be built:/) {
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state = PASSIVE
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}
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if ($0 == "activating the configuration...") {
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state = PASSIVE
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}
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out()
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}
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state == ERROR {
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if ($0 ~ /^\s*at /) {
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location = gensub(/^\s*at (.*):$/,"\\1","1")
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content = ""
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lnumcol = gensub(/^.*:([0-9]+:[0-9]+)$/,"\\1","1",location)
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lnum = gensub(/:.*/,"","1",lnumcol)
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col = gensub(/.*:/,"","1",lnumcol)
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next
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}
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if ($1 == lnum "|") {
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content = gensub(/^\s*[0-9]+\|(.*)/,"\\1","1")
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location = sprintf("%50s", location)
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preview_size = COLUMNS - length(location " ")
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prefix = gensub(/^\s*/,"","1",substr(content, 1, col))
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infix = gensub(/^([0-9a-zA-Z]+|.).*$/, "\\1", "1", substr(content, col + 1))
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suffix = substr(content, col + length(infix) + 1)
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if (length(prefix infix suffix) > preview_size) {
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n = (preview_size - length(infix)) / 2 - length(" ")
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prefix = substr(prefix, length(prefix) - n + 1)
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if (prefix != "") { prefix = "…" prefix }
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suffix = substr(suffix, 1, n)
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if (suffix != "") { suffix = suffix "…" }
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}
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preview = \
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"\x1b[38;5;244m" prefix "\x1b[m" \
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"\x1b[38;5;230m" infix "\x1b[m" \
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"\x1b[38;5;244m" suffix "\x1b[m"
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trace[trace_count++] = location " " preview
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next
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}
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if ($0 == "") next
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if ($0 ~ /^\s*… (from|while)/) next
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if ($0 ~ /^\s*([0-9]*)\|/) next
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trace[trace_count++] = $0
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next
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}
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''
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