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patch 8.2.1973: finding a patch number can be a bit slow

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Problem:    Finding a patch number can be a bit slow.
Solution:   Use binary search. (closes #7279)
This commit is contained in:
Bram Moolenaar
2020-11-10 20:54:29 +01:00
parent 5e1f22ff61
commit 232f4612e2
1 changed files with 16 additions and 6 deletions
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22
src/version.c
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@@ -750,6 +750,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
1973,
/**/
1972,
/**/
@@ -4725,11 +4727,21 @@ highest_patch(void)
int
has_patch(int n)
{
int i;
int h, m, l;
for (i = 0; included_patches[i] != 0; ++i)
if (included_patches[i] == n)
// Perform a binary search.
l = 0;
h = (int)(sizeof(included_patches) / sizeof(included_patches[0])) - 1;
while (l < h)
{
m = (l + h) / 2;
if (included_patches[m] == n)
return TRUE;
if (included_patches[m] < n)
h = m;
else
l = m + 1;
}
return FALSE;
}
#endif
@@ -4941,9 +4953,7 @@ list_version(void)
{
msg_puts(_("\nIncluded patches: "));
first = -1;
// find last one
for (i = 0; included_patches[i] != 0; ++i)
;
i = (int)(sizeof(included_patches) / sizeof(included_patches[0])) - 1;
while (--i >= 0)
{
if (first < 0)