diff options
| -rw-r--r-- | src/mbyte.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/src/mbyte.c b/src/mbyte.c index 13d3fa66e..ab0f6122d 100644 --- a/src/mbyte.c +++ b/src/mbyte.c @@ -2595,6 +2595,82 @@ mb_tail_off(base, p) return 1 - dbcs_head_off(base, p); } +/* + * Find the next illegal byte sequence. + */ + void +utf_find_illegal() +{ + pos_T pos = curwin->w_cursor; + char_u *p; + int len; + vimconv_T vimconv; + char_u *tofree = NULL; + + vimconv.vc_type = CONV_NONE; + if (enc_utf8 && (enc_canon_props(curbuf->b_p_fenc) & ENC_8BIT)) + { + /* 'encoding' is "utf-8" but we are editing a 8-bit encoded file, + * possibly a utf-8 file with illegal bytes. Setup for conversion + * from utf-8 to 'fileencoding'. */ + convert_setup(&vimconv, p_enc, curbuf->b_p_fenc); + } + +#ifdef FEAT_VIRTUALEDIT + curwin->w_cursor.coladd = 0; +#endif + for (;;) + { + p = ml_get_cursor(); + if (vimconv.vc_type != CONV_NONE) + { + vim_free(tofree); + tofree = string_convert(&vimconv, p, NULL); + if (tofree == NULL) + break; + p = tofree; + } + + while (*p != NUL) + { + /* Illegal means that there are not enough trail bytes (checked by + * utf_ptr2len()) or too many of them (overlong sequence). */ + len = utf_ptr2len(p); + if (*p >= 0x80 && (len == 1 + || utf_char2len(utf_ptr2char(p)) != len)) + { + if (vimconv.vc_type == CONV_NONE) + curwin->w_cursor.col += p - ml_get_cursor(); + else + { + int l; + + len = p - tofree; + for (p = ml_get_cursor(); *p != NUL && len-- > 0; p += l) + { + l = utf_ptr2len(p); + curwin->w_cursor.col += l; + } + } + goto theend; + } + p += len; + } + if (curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count) + break; + ++curwin->w_cursor.lnum; + curwin->w_cursor.col = 0; + } + + /* didn't find it: don't move and beep */ + curwin->w_cursor = pos; + beep_flush(); + +theend: + vim_free(tofree); + convert_setup(&vimconv, NULL, NULL); +} + #if defined(HAVE_GTK2) || defined(PROTO) /* * Return TRUE if string "s" is a valid utf-8 string. |