File size: 2,172 Bytes
0f034b9 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 | #!/usr/bin/awk -f
# Copyright (c) 2020 International Business Machines Corporation
# Prepared by: Geert Janssen <geert@us.ibm.com>
# Expects a C/C++ tokenizer generated CSV file as input.
# (tokenize -m csv)
# Extract all user identifiers.
function dirname(pathname) {
if (!sub(/\/[^\/]*\/?$/, "", pathname))
return "."
return pathname
}
BEGIN {
# Read the file of all C standard function names, one per line
# Get directory where this script resides (ugly hack):
getline cmdline <("/proc/"PROCINFO["pid"]"/cmdline")
split(cmdline, fields, "\0")
path = dirname(fields[3])
input = path "/std-C-lib-funcs.txt"
while ((rc = (getline line < input)) > 0) {
standard[line]=1
}
close(input)
if (rc < 0)
print "(W) cannot open " input
# Add some other standard names:
# 20
standard["stdin"]=1
standard["stdout"]=1
standard["stderr"]=1
standard["main"]=1
standard["argv"]=1
standard["argc"]=1
standard["NULL"]=1
standard["FILE"]=1
standard["size_t"]=1
standard["ssize_t"]=1
standard["int8_t"]=1
standard["int16_t"]=1
standard["int32_t"]=1
standard["int64_t"]=1
standard["uint8_t"]=1
standard["uint16_t"]=1
standard["uint32_t"]=1
standard["uint64_t"]=1
standard["uintptr_t"]=1
standard["errno"]=1
# Let's throw in some C++ names as well:
# 11
standard["std"]=1
standard["cin"]=1
standard["cout"]=1
standard["cerr"]=1
standard["endl"]=1
standard["vector"]=1
standard["map"]=1
standard["string"]=1
standard["set"]=1
standard["queue"]=1
standard["ptrdiff_t"]=1
# Treat some CPP identifiers as keywords:
# 10
standard["include"]=1
standard["ifdef"]=1
standard["ifndef"]=1
standard["elif"]=1
standard["endif"]=1
standard["define"]=1
standard["undef"]=1
standard["defined"]=1
standard["__FILE__"]=1
standard["__LINE__"]=1
standard["pragma"]=1
FS=","
# Skip header:
getline
}
{
# Read csv
# Check for identifier in column 3 (class)
if ($3 == "identifier")
if ($4 in standard == 0)
print $4
}
END {}
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