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Consolidate some ASCII tables in isc/ascii and isc/hex

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There were a number of places that had copies of various ASCII
tables (case conversion, hex and decimal conversion) that are intended
to be faster than the ctype.h macros, or avoid locale pollution.

Move them into libisc, and wrap the lookup tables with macros that
avoid the ctype.h gotchas.
This commit is contained in:
Tony Finch
2022-06-24 22:11:02 +01:00
parent db3590e0b7
commit 27a561273e
18 changed files with 251 additions and 274 deletions
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7
lib/isc/symtab.c
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@@ -13,9 +13,9 @@
/*! \file */
#include <ctype.h>
#include <stdbool.h>
#include <isc/ascii.h>
#include <isc/magic.h>
#include <isc/mem.h>
#include <isc/string.h>
@@ -111,7 +111,6 @@ static unsigned int
hash(const char *key, bool case_sensitive) {
const char *s;
unsigned int h = 0;
int c;
/*
* This hash function is similar to the one Ousterhout
@@ -124,9 +123,7 @@ hash(const char *key, bool case_sensitive) {
}
} else {
for (s = key; *s != '\0'; s++) {
c = *s;
c = tolower((unsigned char)c);
h += (h << 3) + c;
h += (h << 3) + isc_ascii_tolower(*s);
}
}