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165 lines
2.7 KiB
Awk
165 lines
2.7 KiB
Awk
#! /usr/bin/awk -f
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# vim:ts=4:sw=4
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BEGIN {
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brace = 0;
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incomment = 0;
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buffer_len = 0;
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}
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# multiline comment handling
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{
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# removes one line comment
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gsub(/\/\*(.+?)\*\//, " ");
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}
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/\*\// {
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if (incomment) {
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sub(/.*\*\//, "");
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incomment = 0;
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}
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}
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incomment {
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next;
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}
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/\/\*/ {
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sub(/\/\*.*/, "");
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incomment = 1;
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# fall through
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}
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# skip file/line mark here to be faster
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/^#/ {
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next;
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}
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/^}.*;/ {
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if (instruct) {
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sub(";", "");
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if (instruct == 1 && $2) {
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instruct = $2;
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}
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if (instruct in typedefs) {
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instruct = typedefs[instruct];
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}
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sizeinfo = "";
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elms = "";
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for (i = 0; i in buffer; i ++) {
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if (i) {
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sizeinfo = sizeinfo " + ";
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}
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sizeinfo = sizeinfo "sizeof(((" instruct "*)NULL)->" buffer[i] ")";
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if (i == 0) {
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elms = buffer[i];
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}
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else {
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elms = elms "," buffer[i];
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}
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}
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printf "define(`ELEMENTSOF_%s', `%s')\n", instruct, elms;
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printf "define(`COUNTOF_%s', `%s')\n", instruct, i;
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printf "define(`SIZEOF_%s', `( %s )')\n", instruct, sizeinfo;
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print "\n";
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for (i in buffer) {
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delete buffer[i];
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}
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buffer_len = 0;
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instruct = 0;
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}
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next;
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}
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/.\{/ {
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brace = brace + 1;
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}
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/.}/ {
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brace = brace - 1;
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}
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{
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if (brace == 1 && instruct) {
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gsub(/(^[\t ]+|[\t ]+$)/, ""); # trim whitespaces
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sub(/.*[{}]/, "");
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gsub(/\[[^\]]+\]/, ""); # ignore [...]
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gsub(/:[0-9]+/, ""); # ignore struct bit
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if (match($0, /^[^(]*\([ ]*\*([^)]+)\)/)) {
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sub(/ +/, "")
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sub(/^[^(]*\(\*/, "");
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sub(/\).*/, "");
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# function pointer
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buffer[buffer_len] = $0;
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buffer_len ++;
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}
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else {
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# process normal variables
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# ignore any ()s
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while (gsub(/(\([^)]*\))/, "")) {
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}
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if (match($0, /[()]/)) {
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next;
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}
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# unsigned int *a, b; int c;
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gsub(/[*]/, " ");
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# unsigned int a, b; int c;
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gsub(/ +/, " ");
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# unsigned int a, b; int c;
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gsub(/ *[,;]/, ";");
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# unsigned int a; b; int c;
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if (!match($0, /;/)) {
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next;
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}
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# print "=DEBUG=" $0 "==";
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split($0, chunks, ";");
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# [unsigned int a, b, c]
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for (i = 1; i in chunks; i ++) {
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if (chunks[i] == "") {
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delete chunks[i];
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continue;
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}
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split(chunks[i], pieces, " ");
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# [unsigned, int, a]
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# [b]
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# [c]
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last_piece = "";
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for (j = 1; j in pieces; j ++) {
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last_piece = pieces[j];
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delete pieces[j];
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}
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if (last_piece == "") {
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# print "=ERROR=" chunks[i] "==";
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delete chunks[i];
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continue;
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}
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# a
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# b
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# c
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buffer[buffer_len] = last_piece;
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buffer_len ++;
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delete chunks[i]
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}
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last_piece = "";
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}
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next;
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}
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}
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/^typedef struct [^{]*;/ {
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sub(";", "");
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typedefs[$3] = $4;
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next;
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}
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/^typedef struct .*\{[^}]*$/ {
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brace = 1;
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instruct = 1;
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next;
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}
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/^struct .*\{/ {
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instruct = $2;
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brace = 1;
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next;
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}
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