113 lines
2.8 KiB
Plaintext
113 lines
2.8 KiB
Plaintext
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# vile: awkmode
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function noident(given) {
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gsub(/\$/,"@", given);
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return given;
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}
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BEGIN { havesection = 0;
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version = "$Id: skel2c,v 1.3 2014/04/06 19:48:04 tom Exp $";
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nsec = 0;
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ifdef = "";
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printf "/* This file generated automatically using\n * %s\n */\n\n",
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noident(version);
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}
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/[$]Id[:][^$]*[$]/ {
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printf "%s\n", noident($0);
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next;
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}
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/^%% *insert *VERSION *here/ {
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printf " CONCAT1(\"#define YYMAJOR \", YYMAJOR),\n";
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printf " CONCAT1(\"#define YYMINOR \", YYMINOR),\n";
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printf "#ifdef YYPATCH\n";
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printf " CONCAT1(\"#define YYPATCH \", YYPATCH),\n";
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printf "#endif\n";
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next;
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}
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/^%%ifdef/ {
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if (NF >= 2) {
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printf "#if defined(%s)\n", $2;
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printf " \"#if %s\",\n", $2;
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} else {
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_abort_exit = 1;
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printf "skel2c: ill-formed %%ifdef in skeleton file on line %d\n", FNR > "/dev/stderr";
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exit 2;
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}
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if (ifdef != "") {
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printf "skel2c: nested %%ifdef in skeleton file on line %d\n", FNR > "/dev/stderr";
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exit 2;
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}
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ifdef = $2;
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next;
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}
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/^%%endif/ {
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if (ifdef != "") {
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if (NF >= 2) {
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printf " \"#endif /* %s */\",\n", $2;
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printf "#endif /* defined(%s) */\n", $2;
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} else {
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printf " \"#endif /* %s */\",\n", ifdef;
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printf "#endif /* defined(%s) */\n", ifdef;
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}
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ifdef = "";
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} else {
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printf " \"#endif\",\n";
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printf "#endif\n";
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printf "skel2c: unmatched %endif in skeleton file on line %d\n", FNR > "/dev/stderr";
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exit 2;
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}
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next;
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}
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/^%%/ { if (havesection) {
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printf " 0\n};\n\n";
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}
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if (NF >= 2) {
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havesection = 1;
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section = $2;
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seclist[nsec] = section;
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nsec = nsec + 1;
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printf "const char *const %s[] =\n{\n", $2;
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} else {
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havesection = 0;
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}
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next;
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}
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{ if (havesection) {
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# Could use 'gsub(/\\/, "\\\\")' instead of the following
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# two lines, but there's a bug in mawk and the original
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# awk (not in gawk) which is triggered by that.
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gsub(/\\/, "\\\1");
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gsub(/\1/, "\\");
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# gsub(/\t/, "\\t"); # change '\t' to "\\t"
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gsub(/\"/, "\\\"");
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printf " \"%s\",\n", $0;
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} else {
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print $0;
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}
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}
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END { if (_abort_exit)
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exit 2;
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if (havesection) {
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print " 0\n};\n";
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}
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if (nsec > 0) {
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print "void";
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print "write_section(FILE * fp, const char *const section[])";
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print "{";
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print " int i;";
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print " const char *s;\n";
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print " for (i = 0; (s = section[i]) != 0; ++i)";
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print " {";
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print "\tif (fp == code_file)";
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print "\t ++outline;";
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print "\tfprintf(fp, \"%s\\n\", s);";
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print " }";
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print "}";
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} else {
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print "skel2c: no sections defined in skeleton file" > "/dev/stderr";
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exit 2;
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}
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if (ifdef != "") {
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printf "skel2c: unmatched %%ifdef %s at end of skeleton file\n", $ifdef > "/dev/stderr";
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exit 2;
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}
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}
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