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top: plug a small potential hole in multi-byte support

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Unlike the insp_mkrow_raw function the insp_mkrow_utf8
routine is not equipped to print non-ctl, non-printing
characters like '<7f>'. However, technically that very
value currently slips through the cracks. So with this
patch top will now print a space in the unlikely event
a character with the value of 127 is ever encountered.

Signed-off-by: Jim Warner <james.warner@comcast.net>
This commit is contained in:
Jim Warner 2017-10-01 17:59:59 -05:00 committed by Craig Small
parent 62367defa2
commit d5a9965cde
1 changed files with 4 additions and 2 deletions
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6
top/top.c
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@ -3157,6 +3157,7 @@ static void insp_mkrow_utf8 (int col, int row) {
#define mkCTL { if ((to += 2) <= Screen_cols) \
PUTT("%s^%c%s", Curwin->capclr_msg, uch + '@', Caps_off); }
#endif
#define mkNUL { buf1[0] = ' '; doPUT(buf1) }
#define doPUT(buf) if (++to <= Screen_cols) putp(buf);
static char buf1[2], buf2[3], buf3[4], buf4[5];
char tline[BIGBUFSIZ];
@ -3176,6 +3177,7 @@ static void insp_mkrow_utf8 (int col, int row) {
case 1:
if (uch == '\n') break;
else if (uch < 32) mkCTL
else if (uch == 127) mkNUL
else { buf1[0] = uch; doPUT(buf1) }
break;
case 2:
@ -3191,8 +3193,7 @@ static void insp_mkrow_utf8 (int col, int row) {
doPUT(buf4)
break;
default:
buf1[0] = ' ';
doPUT(buf1)
mkNUL
break;
}
} else {
@ -3206,6 +3207,7 @@ static void insp_mkrow_utf8 (int col, int row) {
#undef maxSZ
#undef mkFND
#undef mkCTL
#undef mkNUL
#undef doPUT
} // end: insp_mkrow_utf8