138. [cleanup] isc_strtouq moved from str.[ch] to string.[ch] and

renamed isc_string_touint64.  isc_strsep moved from
                        strsep.c to string.c and renamed isc_string_separate.

lib/isc/string.c

@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2000  Internet Software Consortium.
+ * 
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <ctype.h>
+
+#include <isc/string.h>
+
+static char digits[] = "0123456789abcdefghijklmnoprstuvwxyz";
+
+isc_uint64_t
+isc_string_touint64(char *source, char **end, int base) {
+	isc_uint64_t tmp;
+	isc_uint64_t overflow;
+	char *s = source;
+	char *o;
+	char c;
+	
+	if ((base < 0) || (base == 1) || (base > 36)) {
+		*end = source;
+		return (0);
+	}
+
+	while (*s != 0 && isascii(*s&0xff) && isspace(*s&0xff))
+		s++;
+	if (*s == '+' /* || *s == '-' */)
+		s++;
+	if (base == 0) {
+		if (*s == '0' && (*(s+1) == 'X' || *(s+1) == 'x')) {
+			s += 2;
+			base = 16;
+		} else if (*s == '0')
+			base = 8;
+		else
+			base = 10;
+	}
+	if (*s == 0) {
+		*end = source;
+		return (0);
+	}
+	overflow = ~0;
+	overflow /= base;
+	tmp = 0;
+		
+	while ((c = *s) != 0) {
+		c = tolower(c);
+		/* end ? */
+		if ((o = strchr(digits, c)) == NULL) {
+			*end = s;
+			return (tmp);
+		}
+		/* end ? */
+		if ((o - digits) >= base) {
+			*end = s;
+			return (tmp);
+		}
+		/* overflow ? */
+		if (tmp > overflow) {
+			*end = source;
+			return (0);
+		}
+		tmp *= base;
+		/* overflow ? */
+		if ((tmp + (o - digits)) < tmp) {
+			*end = source;
+			return (0);
+		}
+		tmp += o - digits;
+		s++;
+	}
+	*end = s;
+	return (tmp);
+}
+
+char *
+isc_string_separate(char **stringp, const char *delim) {
+	char *string = *stringp;
+	char *s;
+	const char *d;
+	char sc, dc;
+
+	if (string == NULL)
+		return (NULL);
+
+	for (s = string; (sc = *s) != '\0'; s++)
+		for (d = delim; (dc = *d) != '\0'; d++)
+			if (sc == dc) {
+				*s++ = '\0';
+				*stringp = s;
+				return (string);
+			}
+	*stringp = NULL;
+	return (string);
+}