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|
{ pkgs }:
pkgs.writeGawkBin "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
}
''
|
