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top: enable bottom 'window' multi-byte char capability <=== port of newlib 723b418c

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______________________________ original newlib message

If the special bottom 'window' routines remain unaware
of potential multi-byte characters, that heading could
be truncated prematurely and unnecessary blank line(s)
added to the reserved rows at the bottom of a display.

So, in both cases, this patch will now account for any
difference between string lengths and display columns.

Signed-off-by: Jim Warner <james.warner@comcast.net>
This commit is contained in:
Jim Warner 2022-06-15 00:00:00 -05:00 committed by Craig Small
parent b4c17fd544
commit 55453f5af2
1 changed files with 14 additions and 5 deletions
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19
top/top.c
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@ -5134,10 +5134,14 @@ static int bot_focus_str (const char *hdr, const char *str) {
if (n >= sizeof(Bot_buf)) n = sizeof(Bot_buf) - 1; if (n >= sizeof(Bot_buf)) n = sizeof(Bot_buf) - 1;
if (!*str || !strcmp(str, "-")) strcpy(Bot_buf, "n/a"); if (!*str || !strcmp(str, "-")) strcpy(Bot_buf, "n/a");
else memccpy(Bot_buf, str, '\0', n); else memccpy(Bot_buf, str, '\0', n);
Bot_rsvd = 1 + BOT_RSVD + (strlen(Bot_buf) / Screen_cols); Bot_rsvd = 1 + BOT_RSVD + ((strlen(Bot_buf) - utf8_delta(Bot_buf)) / Screen_cols);
if (Bot_rsvd > maxRSVD) Bot_rsvd = maxRSVD; if (Bot_rsvd > maxRSVD) Bot_rsvd = maxRSVD;
// somewhere down call chain fmtmk() may be used, so we'll old school it // somewhere down call chain fmtmk() may be used, so we'll old school it
snprintf(tmp, sizeof(tmp), "%s%s%-*s", tg2(0, SCREEN_ROWS), Curwin->capclr_hdr, Screen_cols, hdr); snprintf(tmp, sizeof(tmp), "%s%s%-*s"
, tg2(0, SCREEN_ROWS)
, Curwin->capclr_hdr
, Screen_cols + utf8_delta(hdr)
, hdr);
putp(tmp); putp(tmp);
} }
// now fmtmk is safe to use ... // now fmtmk is safe to use ...
@ -5181,16 +5185,21 @@ static int bot_focus_strv (const char *hdr, const char **strv) {
memcpy(Bot_buf, strv[0], n); memcpy(Bot_buf, strv[0], n);
if (!Bot_buf[0] || (!strcmp(Bot_buf, "-") && n <= sizeof(char *))) if (!Bot_buf[0] || (!strcmp(Bot_buf, "-") && n <= sizeof(char *)))
strcpy(Bot_buf, "n/a"); strcpy(Bot_buf, "n/a");
for (nsav= 0, p = Bot_buf; strv[nsav] != NULL; nsav++) { for (nsav= 0, p = Bot_buf, x = 0; strv[nsav] != NULL; nsav++) {
p += strlen(strv[nsav]) + 1; p += strlen(strv[nsav]) + 1;
if ((p - Bot_buf) >= sizeof(Bot_buf)) if ((p - Bot_buf) >= sizeof(Bot_buf))
break; break;
n = p - Bot_buf; x += utf8_delta(strv[nsav]);
} }
n = (p - Bot_buf) - (x + 1);
Bot_rsvd = 1 + BOT_RSVD + (n / Screen_cols); Bot_rsvd = 1 + BOT_RSVD + (n / Screen_cols);
if (Bot_rsvd > maxRSVD) Bot_rsvd = maxRSVD; if (Bot_rsvd > maxRSVD) Bot_rsvd = maxRSVD;
// somewhere down call chain fmtmk() may be used, so we'll old school it // somewhere down call chain fmtmk() may be used, so we'll old school it
snprintf(tmp, sizeof(tmp), "%s%s%-*s", tg2(0, SCREEN_ROWS), Curwin->capclr_hdr, Screen_cols, hdr); snprintf(tmp, sizeof(tmp), "%s%s%-*s"
, tg2(0, SCREEN_ROWS)
, Curwin->capclr_hdr
, Screen_cols + utf8_delta(hdr)
, hdr);
putp(tmp); putp(tmp);
} }
// now fmtmk is safe to use ... // now fmtmk is safe to use ...