Cleanup: Refactor getdigits().

Problem  : getdigits() currently returns a long, but at most places,
           return value is casted (unsafely) into an int. Making casts
           safe would introduce a lot of fuss in the form of assertions
           checking for limits.
Note     : We cannot just change return type to int, because, at some
           places, legitimate long values are used. For example, in
           diff.c, for line numbers.
Solution : Introduce new functions:
           - get_digits()      : Gets an intmax_t from a string.
           - get_int_digits()  : Wrapper for ints.
           - get_long_digits() : Wrapper for longs.
           And replace getdigits() invocations by the appropiate
           wrapper invocations.
This commit is contained in:
Eliseo Martínez
2015-01-11 12:55:38 +01:00
parent 28e75d4c45
commit 04c0658024
23 changed files with 105 additions and 106 deletions

View File

@@ -5162,7 +5162,7 @@ static unsigned get_affitem(int flagtype, char_u **pp)
++*pp; // always advance, avoid getting stuck
return 0;
}
res = getdigits(pp);
res = get_int_digits(pp);
} else {
res = mb_ptr2char_adv(pp);
if (flagtype == AFT_LONG || (flagtype == AFT_CAPLONG
@@ -5283,7 +5283,9 @@ static bool flag_in_afflist(int flagtype, char_u *afflist, unsigned flag)
case AFT_NUM:
for (p = afflist; *p != NUL; ) {
n = getdigits(&p);
int digits = get_int_digits(&p);
assert(digits >= 0);
n = (unsigned int)digits;
if (n == flag)
return true;
if (*p != NUL) // skip over comma
@@ -6357,19 +6359,19 @@ int spell_check_msm(void)
if (!VIM_ISDIGIT(*p))
return FAIL;
// block count = (value * 1024) / SBLOCKSIZE (but avoid overflow)
start = (getdigits(&p) * 10) / (SBLOCKSIZE / 102);
start = (get_long_digits(&p) * 10) / (SBLOCKSIZE / 102);
if (*p != ',')
return FAIL;
++p;
if (!VIM_ISDIGIT(*p))
return FAIL;
incr = (getdigits(&p) * 102) / (SBLOCKSIZE / 10);
incr = (get_long_digits(&p) * 102) / (SBLOCKSIZE / 10);
if (*p != ',')
return FAIL;
++p;
if (!VIM_ISDIGIT(*p))
return FAIL;
added = getdigits(&p) * 1024;
added = get_long_digits(&p) * 1024;
if (*p != NUL)
return FAIL;
@@ -8355,7 +8357,7 @@ int spell_check_sps(void)
f = 0;
if (VIM_ISDIGIT(*buf)) {
s = buf;
sps_limit = getdigits(&s);
sps_limit = get_int_digits(&s);
if (*s != NUL && !VIM_ISDIGIT(*s))
f = -1;
} else if (STRCMP(buf, "best") == 0)