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authorThomas Voss <mail@thomasvoss.com> 2022-10-04 10:49:27 +0200
committerThomas Voss <mail@thomasvoss.com> 2022-10-04 10:49:27 +0200
commitba2f3b5d6277ae6aa0c5ff104c5048a71d06458f (patch)
tree02390739af6350f7d2ff9cf24e7b651144808958 /center.c
parentaeba3f9e04d044012f939dadf279e3c561f7b69b (diff)
Fix bug when width is less than line length
If the length of a line is longer than the width of the display we want to center on, `width - len` becomes negative which causes an infinite loop of printing spaces. This fixes that bug.
Diffstat (limited to 'center.c')
-rw-r--r--center.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/center.c b/center.c
index 06141b8..2c4ac0f 100644
--- a/center.c
+++ b/center.c
@@ -61,7 +61,7 @@ main(int argc, char **argv)
char *endptr;
void (*centerfunc)(FILE *) = center;
- while ((opt = getopt(argc, argv, ":ew:")) != -1) {
+ while ((opt = getopt(argc, argv, ":elw:")) != -1) {
switch (opt) {
case 'e':
lenfunc = utf8len;
@@ -127,7 +127,7 @@ center(FILE *fp)
}
len = lenfunc(line) + tabs * 8 - tabs;
- for (int i = (width - len) / 2; i; i--)
+ for (int i = (width - len) / 2; i >= 0; i--)
putchar(' ');
fputs(line, stdout);
}
@@ -183,7 +183,7 @@ center_by_longest(FILE *fp)
line = STAILQ_FIRST(&list_head);
while (line != NULL) {
int len = longest;
- for (int i = ((width - len) / 2); i; i--)
+ for (int i = ((width - len) / 2); i >= 0; i--)
putchar(' ');
fputs(line->buffer, stdout);