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# Check tz tables for consistency.
# Contributed by Paul Eggert. This file is in the public domain.
BEGIN {
FS = "\t"
if (!iso_table) iso_table = "iso3166.tab"
if (!zone_table) zone_table = "zone1970.tab"
if (!want_warnings) want_warnings = -1
while (getline <iso_table) {
iso_NR++
if ($0 ~ /^#/) continue
if (NF != 2) {
printf "%s:%d: wrong number of columns\n", \
iso_table, iso_NR >>"/dev/stderr"
status = 1
}
cc = $1
name = $2
if (cc !~ /^[A-Z][A-Z]$/) {
printf "%s:%d: invalid country code '%s'\n", \
iso_table, iso_NR, cc >>"/dev/stderr"
status = 1
}
if (cc <= cc0) {
if (cc == cc0) {
s = "duplicate";
} else {
s = "out of order";
}
printf "%s:%d: country code '%s' is %s\n", \
iso_table, iso_NR, cc, s \
>>"/dev/stderr"
status = 1
}
cc0 = cc
if (name2cc[name]) {
printf "%s:%d: '%s' and '%s' have the same name\n", \
iso_table, iso_NR, name2cc[name], cc \
>>"/dev/stderr"
status = 1
}
name2cc[name] = cc
cc2name[cc] = name
cc2NR[cc] = iso_NR
}
cc0 = ""
while (getline <zone_table) {
zone_NR++
if ($0 ~ /^#/) continue
if (NF != 3 && NF != 4) {
printf "%s:%d: wrong number of columns\n", \
zone_table, zone_NR >>"/dev/stderr"
status = 1
}
split($1, cca, /,/)
cc = cca[1]
coordinates = $2
tz = $3
comments = $4
if (cc < cc0) {
printf "%s:%d: country code '%s' is out of order\n", \
zone_table, zone_NR, cc >>"/dev/stderr"
status = 1
}
cc0 = cc
tztab[tz] = 1
tz2comments[tz] = comments
tz2NR[tz] = zone_NR
for (i in cca) {
cc = cca[i]
cctz = cc tz
cctztab[cctz] = 1
if (cc2name[cc]) {
cc_used[cc]++
} else {
printf "%s:%d: %s: unknown country code\n", \
zone_table, zone_NR, cc >>"/dev/stderr"
status = 1
}
}
if (coordinates !~ /^[-+][0-9][0-9][0-5][0-9][-+][01][0-9][0-9][0-5][0-9]$/ \
&& coordinates !~ /^[-+][0-9][0-9][0-5][0-9][0-5][0-9][-+][01][0-9][0-9][0-5][0-9][0-5][0-9]$/) {
printf "%s:%d: %s: invalid coordinates\n", \
zone_table, zone_NR, coordinates >>"/dev/stderr"
status = 1
}
}
for (cctz in cctztab) {
cc = substr (cctz, 1, 2)
tz = substr (cctz, 3)
if (1 < cc_used[cc]) {
comments_needed[tz] = cc
}
}
for (cctz in cctztab) {
cc = substr (cctz, 1, 2)
tz = substr (cctz, 3)
if (!comments_needed[tz] && tz2comments[tz]) {
printf "%s:%d: unnecessary comment '%s'\n", \
zone_table, tz2NR[tz], tz2comments[tz] \
>>"/dev/stderr"
tz2comments[tz] = 0
status = 1
} else if (comments_needed[tz] && !tz2comments[tz]) {
printf "%s:%d: missing comment for %s\n", \
zone_table, tz2NR[tz], comments_needed[tz] \
>>"/dev/stderr"
tz2comments[tz] = 1
status = 1
}
}
FS = " "
}
$1 ~ /^#/ { next }
{
tz = rules = ""
if ($1 == "Zone") {
tz = $2
ruleUsed[$4] = 1
} else if ($1 == "Link" && zone_table == "zone.tab") {
# Ignore Link commands if source and destination basenames
# are identical, e.g. Europe/Istanbul versus Asia/Istanbul.
src = $2
dst = $3
while ((i = index(src, "/"))) src = substr(src, i+1)
while ((i = index(dst, "/"))) dst = substr(dst, i+1)
if (src != dst) tz = $3
} else if ($1 == "Rule") {
ruleDefined[$2] = 1
} else {
ruleUsed[$2] = 1
}
if (tz && tz ~ /\//) {
if (!tztab[tz]) {
printf "%s: no data for '%s'\n", zone_table, tz \
>>"/dev/stderr"
status = 1
}
zoneSeen[tz] = 1
}
}
END {
for (tz in ruleDefined) {
if (!ruleUsed[tz]) {
printf "%s: Rule never used\n", tz
status = 1
}
}
for (tz in tztab) {
if (!zoneSeen[tz]) {
printf "%s:%d: no Zone table for '%s'\n", \
zone_table, tz2NR[tz], tz >>"/dev/stderr"
status = 1
}
}
if (0 < want_warnings) {
for (cc in cc2name) {
if (!cc_used[cc]) {
printf "%s:%d: warning: " \
"no Zone entries for %s (%s)\n", \
iso_table, cc2NR[cc], cc, cc2name[cc]
}
}
}
exit status
}
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