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Terminal: Enough compat work for Lynx to actually load web pages.

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This commit is contained in:
Andreas Kling 2019-03-14 18:33:21 +01:00
parent ee0f00c644
commit b7ad35d040
3 changed files with 70 additions and 8 deletions
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59
LibC/stdlib.cpp
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@ -6,6 +6,7 @@
#include <alloca.h>
#include <assert.h>
#include <errno.h>
#include <ctype.h>
#include <AK/Assertions.h>
#include <AK/Types.h>
#include <Kernel/Syscall.h>
@ -404,11 +405,61 @@ int atexit(void (*function)())
assert(false);
}
long strtol(const char*, char** endptr, int base)
long strtol(const char* str, char** endptr, int base)
{
(void)endptr;
(void)base;
assert(false);
const char* s = str;
unsigned long acc;
int c;
unsigned long cutoff;
int neg = 0;
int any;
int cutlim;
do {
c = *s++;
} while (isspace(c));
if (c == '-') {
neg = 1;
c = *s++;
} else if (c == '+')
c = *s++;
if ((base == 0 || base == 16) &&
c == '0' && (*s == 'x' || *s == 'X')) {
c = s[1];
s += 2;
base = 16;
}
if (base == 0)
base = c == '0' ? 8 : 10;
cutoff = neg ? -(unsigned long)LONG_MIN : LONG_MAX;
cutlim = cutoff % (unsigned long)base;
cutoff /= (unsigned long)base;
for (acc = 0, any = 0;; c = *s++) {
if (isdigit(c))
c -= '0';
else if (isalpha(c))
c -= isupper(c) ? 'A' - 10 : 'a' - 10;
else
break;
if (c >= base)
break;
if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim))
any = -1;
else {
any = 1;
acc *= base;
acc += c;
}
}
if (any < 0) {
acc = neg ? LONG_MIN : LONG_MAX;
errno = ERANGE;
} else if (neg)
acc = -acc;
if (endptr)
*endptr = (char*)(any ? s - 1 : str);
return acc;
}
unsigned long strtoul(const char*, char** endptr, int base)