libc: make atoi() not parse c-style octal and hex numbers

interpreting octal breaks parsing of decimal numbers with
leading zeros. the manpage listed this in the BUGS section,
so we'r going to fix it as this just causes confusion as
most callers of atoi() do not expect it.

1 files changed, 2 insertions, 41 deletions

diff --git a/sys/src/libc/port/atol.c b/sys/src/libc/port/atol.c
index 6928da7bd..cf7270c6f 100644
--- a/sys/src/libc/port/atol.c
+++ b/sys/src/libc/port/atol.c
@@ -4,50 +4,11 @@
 long
 atol(char *s)
 {
-	long n;
-	int f, c;
-
-	n = 0;
-	f = 0;
-	while(*s == ' ' || *s == '\t')
-		s++;
-	if(*s == '-' || *s == '+') {
-		if(*s++ == '-')
-			f = 1;
-		while(*s == ' ' || *s == '\t')
-			s++;
-	}
-	if(s[0]=='0' && s[1]) {
-		if(s[1]=='x' || s[1]=='X'){
-			s += 2;
-			for(;;) {
-				c = *s;
-				if(c >= '0' && c <= '9')
-					n = n*16 + c - '0';
-				else
-				if(c >= 'a' && c <= 'f')
-					n = n*16 + c - 'a' + 10;
-				else
-				if(c >= 'A' && c <= 'F')
-					n = n*16 + c - 'A' + 10;
-				else
-					break;
-				s++;
-			}
-		} else
-			while(*s >= '0' && *s <= '7')
-				n = n*8 + *s++ - '0';
-	} else
-		while(*s >= '0' && *s <= '9')
-			n = n*10 + *s++ - '0';
-	if(f)
-		n = -n;
-	return n;
+	return strtol(s, nil, 10);
 }
 
 int
 atoi(char *s)
 {
-
-	return atol(s);
+	return strtol(s, nil, 10);
 }