timezone/checktab.awk

   1 # Check tz tables for consistency.
   2
   3 # Contributed by Paul Eggert <eggert@twinsun.com>.
   4
   5 BEGIN {
   6         FS = "\t"
   7
   8         if (!iso_table) iso_table = "iso3166.tab"
   9         if (!zone_table) zone_table = "zone.tab"
  10         if (!want_warnings) want_warnings = -1
  11
  12         while (getline <iso_table) {
  13                 iso_NR++
  14                 if ($0 ~ /^#/) continue
  15                 if (NF != 2) {
  16                         printf "%s:%d: wrong number of columns\n",
  17                                 iso_table, iso_NR >>"/dev/stderr"
  18                         status = 1
  19                 }
  20                 cc = $1
  21                 name = $2
  22                 if (cc !~ /^[A-Z][A-Z]$/) {
  23                         printf "%s:%d: invalid country code `%s'\n", \
  24                                 iso_table, iso_NR, cc >>"/dev/stderr"
  25                         status = 1
  26                 }
  27                 if (cc <= cc0) {
  28                         printf "%s:%d: country code `%s' is %s\n", \
  29                                 iso_table, iso_NR, cc, \
  30                                 cc==cc0 ? "duplicate"  : "out of order" \
  31                                 >>"/dev/stderr"
  32                         status = 1
  33                 }
  34                 cc0 = cc
  35                 if (name2cc[name]) {
  36                         printf "%s:%d: `%s' and `%s' have the sname name\n", \
  37                                 iso_table, iso_NR, name2cc[name], cc \
  38                                 >>"/dev/stderr"
  39                         status = 1
  40                 }
  41                 name2cc[name] = cc
  42                 cc2name[cc] = name
  43                 cc2NR[cc] = iso_NR
  44         }
  45
  46         zone_table = "zone.tab"
  47         cc0 = ""
  48
  49         while (getline <zone_table) {
  50                 zone_NR++
  51                 if ($0 ~ /^#/) continue
  52                 if (NF != 3 && NF != 4) {
  53                         printf "%s:%d: wrong number of columns\n",
  54                                 zone_table, zone_NR >>"/dev/stderr"
  55                         status = 1
  56                 }
  57                 cc = $1
  58                 coordinates = $2
  59                 tz = $3
  60                 comments = $4
  61                 if (cc < cc0) {
  62                         printf "%s:%d: country code `%s' is out of order\n", \
  63                                 zone_table, zone_NR, cc >>"/dev/stderr"
  64                         status = 1
  65                 }
  66                 cc0 = cc
  67                 if (tz2cc[tz]) {
  68                         printf "%s:%d: %s: duplicate TZ column\n", \
  69                                 zone_table, zone_NR, tz >>"/dev/stderr"
  70                         status = 1
  71                 }
  72                 tz2cc[tz] = cc
  73                 tz2comments[tz] = comments
  74                 tz2NR[tz] = zone_NR
  75                 if (cc2name[cc]) {
  76                         cc_used[cc]++
  77                 } else {
  78                         printf "%s:%d: %s: unknown country code\n", \
  79                                 zone_table, zone_NR, cc >>"/dev/stderr"
  80                         status = 1
  81                 }
  82                 if (coordinates !~ /^[-+][0-9][0-9][0-5][0-9][-+][01][0-9][0-9][0-5][0-9]$/ \
  83                     && 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]$/) {
  84                         printf "%s:%d: %s: invalid coordinates\n", \
  85                                 zone_table, zone_NR, coordinates >>"/dev/stderr"
  86                         status = 1
  87                 }
  88         }
  89
  90         for (tz in tz2cc) {
  91                 if (cc_used[tz2cc[tz]] == 1) {
  92                         if (tz2comments[tz]) {
  93                                 printf "%s:%d: unnecessary comment `%s'\n", \
  94                                         zone_table, tz2NR[tz], tz2comments[tz] \
  95                                         >>"/dev/stderr"
  96                                 status = 1
  97                         }
  98                 } else {
  99                         if (!tz2comments[tz]) {
 100                                 printf "%s:%d: missing comment\n", \
 101                                         zone_table, tz2NR[tz] >>"/dev/stderr"
 102                                 status = 1
 103                         }
 104                 }
 105         }
 106
 107         FS = " "
 108 }
 109
 110 {
 111         tz = ""
 112         if ($1 == "Zone") tz = $2
 113         if ($1 == "Link") {
 114                 # Ignore Link commands if source and destination basenames
 115                 # are identical, e.g. Europe/Istanbul versus Asia/Istanbul.
 116                 src = $2
 117                 dst = $3
 118                 while ((i = index(src, "/"))) src = substr(src, i+1)
 119                 while ((i = index(dst, "/"))) dst = substr(dst, i+1)
 120                 if (src != dst) tz = $3
 121         }
 122         if (tz && tz ~ /\//) {
 123                 if (!tz2cc[tz]) {
 124                         printf "%s: no data for `%s'\n", zone_table, tz \
 125                                 >>"/dev/stderr"
 126                         status = 1
 127                 }
 128                 zoneSeen[tz] = 1
 129         }
 130 }
 131
 132 END {
 133         for (tz in tz2cc) {
 134                 if (!zoneSeen[tz]) {
 135                         printf "%s:%d: no Zone table for `%s'\n", \
 136                                 zone_table, tz2NR[tz], tz >>"/dev/stderr"
 137                         status = 1
 138                 }
 139         }
 140
 141         if (0 < want_warnings) {
 142                 for (cc in cc2name) {
 143                         if (!cc_used[cc]) {
 144                                 printf "%s:%d: warning:" \
 145                                         "no Zone entries for %s (%s)\n",
 146                                         iso_table, cc2NR[cc], cc, cc2name[cc]
 147                         }
 148                 }
 149         }
 150
 151         exit status
 152 }