stagit-gopher

[fork] gopher git frontend
Log | Files | Refs | README | LICENSE

commit 8091f757ce641307bcdc69c9e5348ef54ab82e5c
parent 70e0e50a6c4d83f7b809be4338bcf2868c13b49b
Author: Hiltjo Posthuma <hiltjo@codemadness.org>
Date:   Fri,  8 Jan 2021 14:30:44 +0100

stagit-gopher-index: sync utf8pad from stagit-gopher.c

Syncs a fix from commit e32410fe:
"fix truncation and padding for lines containing multiwidth glyphs"

Diffstat:
Mstagit-gopher-index.c | 22+++++++++++++---------
1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/stagit-gopher-index.c b/stagit-gopher-index.c @@ -22,29 +22,33 @@ static char *name = ""; int utf8pad(char *buf, size_t bufsiz, const char *s, size_t len, int pad) { - wchar_t w; + wchar_t wc; size_t col = 0, i, slen, siz = 0; - int rl, wc; + int rl, w; if (!len) return -1; slen = strlen(s); - for (i = 0; i < slen && col < len + 1; i += rl) { - if ((rl = mbtowc(&w, &s[i], slen - i < 4 ? slen - i : 4)) <= 0) + for (i = 0; i < slen; i += rl) { + if ((rl = mbtowc(&wc, &s[i], slen - i < 4 ? slen - i : 4)) <= 0) break; - if ((wc = wcwidth(w)) == -1) - wc = 1; - col += wc; - if (col >= len && s[i + rl]) { + if ((w = wcwidth(wc)) == -1) + continue; + if (col + w > len || (col + w == len && s[i + rl])) { if (siz + 4 >= bufsiz) return -1; - memcpy(&buf[siz], "\xe2\x80\xa6", 4); + memcpy(&buf[siz], "\xe2\x80\xa6", 3); + siz += 3; + if (col + w == len && w > 1) + buf[siz++] = pad; + buf[siz] = '\0'; return 0; } if (siz + rl + 1 >= bufsiz) return -1; memcpy(&buf[siz], &s[i], rl); + col += w; siz += rl; buf[siz] = '\0'; }