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patch to support hex sequences from Marcus Menzel

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git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@1186 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
This commit is contained in:
michael
2012-04-09 04:45:07 +00:00
parent 13c974ad61
commit 2c23bdcb1d
1 changed files with 38 additions and 0 deletions
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evaluator.c
+38
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@@ -631,6 +631,44 @@ static void Parse(void)
Word[length++] = '\r';
ExprPtr += 2;
break;
case 'x':
{
int i;
char hexC;
int hex[2];
for (i = 0; i < 2; i++) {
hexC = *(ExprPtr + 2 + i);
if (hexC >= '0' && hexC <= '9')
hex[i] = hexC - '0';
else if (hexC >= 'a' && hexC <= 'f')
hex[i] = hexC - 'a' + 10;
else if (hexC >= 'A' && hexC <= 'F')
hex[i] = hexC - 'A' + 10;
else
break;
}
switch (i) {
case 1:
Word[length] = hex[0];
ExprPtr += 3;
break;
case 2:
Word[length] = hex[0] * 16 + hex[1];
ExprPtr += 4;
break;
default:
error("Evaluator: Illegal hex sequence '\\x%c' in <%s> keeps unchanged.",
*(ExprPtr + 2), Expression);
Word[length] = '\\';
ExprPtr += 1;
}
if (Word[length] == 0)
error("Evaluator: Null character(s) in <%s> will be ignored.", Expression);
else
length++;
}
break;
case '0':
case '1':
case '2':