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tools/nxstyle.c: Don't complain about certain lowercase characters in otherwise uppercase pre-processor identifers: IPv6, IPv4, ICMPv6, IGMPv2, p as a decimal point, d signifying a divisor. It was a bad idea to let the door open a crack for there. While they improve readability, the inconsistently also causes other problems.

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This commit is contained in:
Gregory Nutt 2019-03-12 14:22:52 -06:00
parent 82b276a34c
commit ba859ad302
3 changed files with 96 additions and 29 deletions
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69
tools/nxstyle.c
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@ -548,7 +548,74 @@ int main(int argc, char **argv, char **envp)
do
{
have_upper |= isupper(line[n]);
have_lower |= islower(line[n]);
/* The coding standard provides for some exceptions of lower
* case characters in pre-processor strings:
*
* IPv[4|6] as an IP version number
* ICMPv6 as an ICMP version number
* IGMPv2 as an IGMP version number
* [0-9]p[0-9] as a decimal point
* d[0-9] as a divisor
*/
if (!have_lower && islower(line[n]))
{
switch (line[n])
{
case 'v':
if (n > 1 &&
line[n - 2] == 'I' &&
line[n - 1] == 'P' &&
(line[n + 1] == '4' ||
line[n + 1] == '6'))
{
}
else if (n > 3 &&
line[n - 4] == 'I' &&
line[n - 3] == 'C' &&
line[n - 2] == 'M' &&
line[n - 1] == 'P' &&
line[n + 1] == '6')
{
}
else if (n > 3 &&
line[n - 4] == 'I' &&
line[n - 3] == 'G' &&
line[n - 2] == 'M' &&
line[n - 1] == 'P' &&
line[n + 1] == '2')
{
}
else
{
have_lower = true;
}
break;
case 'p':
if (have_upper &&
(n < 1 ||
!isdigit(line[n - 1]) ||
!isdigit(line[n + 1])))
{
have_lower = true;
}
break;
case 'd':
if (have_upper && !isdigit(line[n + 1]))
{
have_lower = true;
}
break;
default:
have_lower = true;
break;
}
}
n++;
}
while (line[n] == '_' || isalnum(line[n]));