#!/bin/sh

# The input error-code headers are read-only sources.  For out-of-tree (VPATH)
# builds they live in the source tree, which may differ from the build tree, so
# read them from $srcdir (first argument, defaulting to the current directory).
# The generated headers are written relative to the current directory, i.e.
# into the build tree.
srcdir="${1:-.}"

mkdir -p wolfssl

awk '
BEGIN {
    print("/* automatically generated, do not edit */") > "wolfssl/debug-trace-error-codes.h";
    print("#ifndef WOLFSSL_DEBUG_TRACE_ERROR_CODES_H") >> "wolfssl/debug-trace-error-codes.h";
    print("#define WOLFSSL_DEBUG_TRACE_ERROR_CODES_H") >> "wolfssl/debug-trace-error-codes.h";
    print("") >> "wolfssl/debug-trace-error-codes.h";

    print("/* automatically generated, do not edit */") > "wolfssl/debug-untrace-error-codes.h";
    print("#ifdef WOLFSSL_DEBUG_TRACE_ERROR_CODES_H") >> "wolfssl/debug-untrace-error-codes.h";
    print("#undef WOLFSSL_DEBUG_TRACE_ERROR_CODES_H") >> "wolfssl/debug-untrace-error-codes.h";
}
{
    if (match($0, "^[[:space:]]+([A-Z][A-Z0-9_]+)[[:space:]]*=[[:space:]]*(-[0-9]+)([,[:space:]]|$)")) {

        # for mawkward compatibility -- gawk allows errcode_a as the 3rd arg to match().
        gsub("^[[:space:]]+", "", $0);
        split($0, errcode_a, "[[:space:]=,]+");

        if ((errcode_a[1] == "MIN_CODE_E") ||
            (errcode_a[1] == "MAX_CODE_E") ||
            (errcode_a[1] ~ "WC.*MIN_CODE_E") ||
            (errcode_a[1] ~ "WC.*MAX_CODE_E") ||
            (errcode_a[1] ~ "WC.*_FIRST_E") ||
            (errcode_a[1] ~ "WC.*_LAST_E") ||
            (errcode_a[1] ~ "WOLFSSL.*_FIRST_E") ||
            (errcode_a[1] ~ "WOLFSSL.*_LAST_E"))
        {
            next;
        }
        printf("#define %s WC_ERR_TRACE(%s)\n#define CONST_NUM_ERR_%s (%s)\n", errcode_a[1], errcode_a[1], errcode_a[1], errcode_a[2]) >> "wolfssl/debug-trace-error-codes.h";
        printf("#undef %s\n#undef CONST_NUM_ERR_%s\n", errcode_a[1], errcode_a[1]) >> "wolfssl/debug-untrace-error-codes.h";
    }
}
END {
    print("") >> "wolfssl/debug-trace-error-codes.h";
    print("#endif /* WOLFSSL_DEBUG_TRACE_ERROR_CODES_H */") >> "wolfssl/debug-trace-error-codes.h";

    print("") >> "wolfssl/debug-untrace-error-codes.h";
    print("#endif /* WOLFSSL_DEBUG_TRACE_ERROR_CODES_H */") >> "wolfssl/debug-untrace-error-codes.h";
}' "$srcdir/wolfssl/wolfcrypt/error-crypt.h" "$srcdir/wolfssl/error-ssl.h"