timezone/checktab.awk

   1 # Check tz tables for consistency.
   2
   3 # @(#)checktab.awk      1.7
   4
   5 # Contributed by Paul Eggert.
   6
   7 BEGIN {
   8         FS = "\t"
   9
  10         if (!iso_table) iso_table = "iso3166.tab"
  11         if (!zone_table) zone_table = "zone.tab"
  12         if (!want_warnings) want_warnings = -1
  13
  14         while (getline <iso_table) {
  15                 iso_NR++
  16                 if ($0 ~ /^#/) continue
  17                 if (NF != 2) {
  18                         printf "%s:%d: wrong number of columns\n", \
  19                                 iso_table, iso_NR >>"/dev/stderr"
  20                         status = 1
  21                 }
  22                 cc = $1
  23                 name = $2
  24                 if (cc !~ /^[A-Z][A-Z]$/) {
  25                         printf "%s:%d: invalid country code `%s'\n", \
  26                                 iso_table, iso_NR, cc >>"/dev/stderr"
  27                         status = 1
  28                 }
  29                 if (cc <= cc0) {
  30                         if (cc == cc0) {
  31                                 s = "duplicate";
  32                         } else {
  33                                 s = "out of order";
  34                         }
  35
  36                         printf "%s:%d: country code `%s' is %s\n", \
  37                                 iso_table, iso_NR, cc, s \
  38                                 >>"/dev/stderr"
  39                         status = 1
  40                 }
  41                 cc0 = cc
  42                 if (name2cc[name]) {
  43                         printf "%s:%d: `%s' and `%s' have the sname name\n", \
  44                                 iso_table, iso_NR, name2cc[name], cc \
  45                                 >>"/dev/stderr"
  46                         status = 1
  47                 }
  48                 name2cc[name] = cc
  49                 cc2name[cc] = name
  50                 cc2NR[cc] = iso_NR
  51         }
  52
  53         zone_table = "zone.tab"
  54         cc0 = ""
  55
  56         while (getline <zone_table) {
  57                 zone_NR++
  58                 if ($0 ~ /^#/) continue
  59                 if (NF != 3 && NF != 4) {
  60                         printf "%s:%d: wrong number of columns\n", \
  61                                 zone_table, zone_NR >>"/dev/stderr"
  62                         status = 1
  63                 }
  64                 cc = $1
  65                 coordinates = $2
  66                 tz = $3
  67                 comments = $4
  68                 if (cc < cc0) {
  69                         printf "%s:%d: country code `%s' is out of order\n", \
  70                                 zone_table, zone_NR, cc >>"/dev/stderr"
  71                         status = 1
  72                 }
  73                 cc0 = cc
  74                 if (tz2cc[tz]) {
  75                         printf "%s:%d: %s: duplicate TZ column\n", \
  76                                 zone_table, zone_NR, tz >>"/dev/stderr"
  77                         status = 1
  78                 }
  79                 tz2cc[tz] = cc
  80                 tz2comments[tz] = comments
  81                 tz2NR[tz] = zone_NR
  82                 if (cc2name[cc]) {
  83                         cc_used[cc]++
  84                 } else {
  85                         printf "%s:%d: %s: unknown country code\n", \
  86                                 zone_table, zone_NR, cc >>"/dev/stderr"
  87                         status = 1
  88                 }
  89                 if (coordinates !~ /^[-+][0-9][0-9][0-5][0-9][-+][01][0-9][0-9][0-5][0-9]$/ \
  90                     && 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]$/) {
  91                         printf "%s:%d: %s: invalid coordinates\n", \
  92                                 zone_table, zone_NR, coordinates >>"/dev/stderr"
  93                         status = 1
  94                 }
  95         }
  96
  97         for (tz in tz2cc) {
  98                 if (cc_used[tz2cc[tz]] == 1) {
  99                         if (tz2comments[tz]) {
 100                                 printf "%s:%d: unnecessary comment `%s'\n", \
 101                                         zone_table, tz2NR[tz], tz2comments[tz] \
 102                                         >>"/dev/stderr"
 103                                 status = 1
 104                         }
 105                 } else {
 106                         if (!tz2comments[tz]) {
 107                                 printf "%s:%d: missing comment\n", \
 108                                         zone_table, tz2NR[tz] >>"/dev/stderr"
 109                                 status = 1
 110                         }
 111                 }
 112         }
 113
 114         FS = " "
 115 }
 116
 117 {
 118         tz = ""
 119         if ($1 == "Zone") tz = $2
 120         if ($1 == "Link") {
 121                 # Ignore Link commands if source and destination basenames
 122                 # are identical, e.g. Europe/Istanbul versus Asia/Istanbul.
 123                 src = $2
 124                 dst = $3
 125                 while ((i = index(src, "/"))) src = substr(src, i+1)
 126                 while ((i = index(dst, "/"))) dst = substr(dst, i+1)
 127                 if (src != dst) tz = $3
 128         }
 129         if (tz && tz ~ /\//) {
 130                 if (!tz2cc[tz]) {
 131                         printf "%s: no data for `%s'\n", zone_table, tz \
 132                                 >>"/dev/stderr"
 133                         status = 1
 134                 }
 135                 zoneSeen[tz] = 1
 136         }
 137 }
 138
 139 END {
 140         for (tz in tz2cc) {
 141                 if (!zoneSeen[tz]) {
 142                         printf "%s:%d: no Zone table for `%s'\n", \
 143                                 zone_table, tz2NR[tz], tz >>"/dev/stderr"
 144                         status = 1
 145                 }
 146         }
 147
 148         if (0 < want_warnings) {
 149                 for (cc in cc2name) {
 150                         if (!cc_used[cc]) {
 151                                 printf "%s:%d: warning: " \
 152                                         "no Zone entries for %s (%s)\n", \
 153                                         iso_table, cc2NR[cc], cc, cc2name[cc]
 154                         }
 155                 }
 156         }
 157
 158         exit status
 159 }