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- # compat - check if awk program uses new built-in names
- # AKW p80
-
- BEGIN { asplit("close system atan2 sin cos rand srand " \
- "match sub gsub", fcns)
- asplit("ARGC ARGV FNR RSTART RLENGTH SUBSEP", vars)
- asplit("do delete function return", keys)
- }
-
- { line = $0 }
-
- /"/ { gsub(/"([^"]|\\")*"/, "", line) } # remove strings,
- /\// { gsub(/\/([^\/]|\\\/)+\//, "", line) } # reg exprs,
- /#/ { sub(/#.*/, "", line) } # and comments
-
- { n = split(line, x, "[^A-Za-z0-9_]+") # into words
- for (i = 1; i <= n; i++) {
- if (x[i] in fcns)
- warn(x[i] " is now a built-in function")
- if (x[i] in vars)
- warn(x[i] " is now a built-in variable")
- if (x[i] in keys)
- warn(x[i] " is now a keyword")
- }
- }
-
- function asplit(str, arr) { # make an assoc array from str
- n = split(str, temp)
- for (i = 1; i <= n; i++)
- arr[temp[i]]++
- return n
- }
-
- function warn(s) {
- sub(/^[ \t]*/, "")
- printf("file %s, line %d: %s\n\t%s\n", FILENAME, FNR, s, $0)
- }
-
-