1 files changed, 133 insertions, 0 deletions
diff --git a/util/bincfg/bincfg.l b/util/bincfg/bincfg.l
new file mode 100644
index 0000000000..f9e880f333
--- /dev/null
+++ b/util/bincfg/bincfg.l
@@ -0,0 +1,133 @@
+/*
+ * bincfg - Compiler/Decompiler for data blobs with specs
+ * Copyright (C) 2017 Damien Zammit <damien@zamaudio.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+%{
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "bincfg.tab.h"
+
+extern struct blob binary;
+
+unsigned int parsehex (char *s)
+{
+	unsigned int i, nib, val = 0;
+	unsigned int nibs = strlen(s) - 2;
+
+	for (i = 2; i < nibs + 2; i++) {
+		if (s[i] >= '0' && s[i] <= '9') {
+			nib = s[i] - '0';
+		} else if (s[i] >= 'a' && s[i] <= 'f') {
+			nib = s[i] - 'a' + 10;
+		} else if (s[i] >= 'A' && s[i] <= 'F') {
+			nib = s[i] - 'A' + 10;
+		} else {
+			return 0;
+		}
+		val |= nib << (((nibs - 1) - (i - 2)) * 4);
+	}
+	return val;
+}
+
+char* stripquotes (char *string)
+{
+	char *stripped;
+	unsigned int len = strlen(string);
+	if (len >= 2 && string[0] == '"' && string[len - 1] == '"') {
+		stripped = (char *) malloc (len - 1);
+		if (stripped == NULL) {
+			printf("Out of memory\n");
+			exit(1);
+		}
+		snprintf (stripped, len - 1, "%s", string + 1);
+		return stripped;
+	}
+	return NULL;
+}
+
+%}
+
+%option noyywrap
+%option nounput
+
+DIGIT [0-9]
+INT [-]?{DIGIT}|[-]?[1-9]{DIGIT}+
+FRAC [.]{DIGIT}+
+EXP [eE][+-]?{DIGIT}+
+NUMBER {INT}|{INT}{FRAC}|{INT}{EXP}|{INT}{FRAC}{EXP}
+HEX [0][x][0-9a-fA-F]+
+STRING ["][^"]*["]
+COMMENT [#][^\n]*$
+
+%%
+
+{STRING} {
+    yylval.str = stripquotes(yytext);
+    return name;
+};
+
+{NUMBER} {
+    yylval.u32 = atoi(yytext);
+    return val;
+};
+
+{HEX} {
+    yylval.u32 = parsehex(yytext);
+    return val;
+};
+
+\{ {
+    return '{';
+};
+
+\} {
+    return '}';
+};
+
+\[ {
+    return '[';
+};
+
+\] {
+    return ']';
+};
+
+, {
+    return ',';
+};
+
+: {
+    return ':';
+};
+
+= {
+    return '=';
+};
+
+[ \t\n]+ /* ignore whitespace */;
+
+{COMMENT} /* ignore comments */
+
+\% {
+    return '%';
+};
+
+<<EOF>> { return eof; };
+
+%%
+
+void set_input_string(char* in) {
+	yy_scan_string(in);
+}