diff options
Diffstat (limited to 'contrib/libreadline/display.c')
-rw-r--r-- | contrib/libreadline/display.c | 598 |
1 files changed, 527 insertions, 71 deletions
diff --git a/contrib/libreadline/display.c b/contrib/libreadline/display.c index cb1c500..5150ea6 100644 --- a/contrib/libreadline/display.c +++ b/contrib/libreadline/display.c @@ -43,6 +43,7 @@ /* System-specific feature definitions and include files. */ #include "rldefs.h" +#include "rlmbutil.h" /* Termcap library stuff. */ #include "tcap.h" @@ -62,11 +63,18 @@ extern char *strchr (), *strrchr (); extern char *_rl_term_forward_char; #endif -static void update_line __P((char *, char *, int, int, int, int)); -static void space_to_eol __P((int)); -static void delete_chars __P((int)); -static void insert_some_chars __P((char *, int)); -static void cr __P((void)); +static void update_line PARAMS((char *, char *, int, int, int, int)); +static void space_to_eol PARAMS((int)); +static void delete_chars PARAMS((int)); +static void insert_some_chars PARAMS((char *, int, int)); +static void cr PARAMS((void)); + +#if defined (HANDLE_MULTIBYTE) +static int _rl_col_width PARAMS((char *, int, int)); +static int *_rl_wrapped_line; +#else +# define _rl_col_width(l, s, e) (((e) <= (s)) ? 0 : (e) - (s)) +#endif static int *inv_lbreaks, *vis_lbreaks; static int inv_lbsize, vis_lbsize; @@ -202,7 +210,7 @@ expand_prompt (pmt, lp, lip, niflp) } l = strlen (pmt); - r = ret = xmalloc (l + 1); + r = ret = (char *)xmalloc (l + 1); invfl = 0; /* invisible chars in first line of prompt */ @@ -335,16 +343,16 @@ init_line_structures (minsize) { if (line_size < minsize) line_size = minsize; - visible_line = xmalloc (line_size); - invisible_line = xmalloc (line_size); + visible_line = (char *)xmalloc (line_size); + invisible_line = (char *)xmalloc (line_size); } else if (line_size < minsize) /* ensure it can hold MINSIZE chars */ { line_size *= 2; if (line_size < minsize) line_size = minsize; - visible_line = xrealloc (visible_line, line_size); - invisible_line = xrealloc (invisible_line, line_size); + visible_line = (char *)xrealloc (visible_line, line_size); + invisible_line = (char *)xrealloc (invisible_line, line_size); } for (n = minsize; n < line_size; n++) @@ -359,6 +367,9 @@ init_line_structures (minsize) inv_lbsize = vis_lbsize = 256; inv_lbreaks = (int *)xmalloc (inv_lbsize * sizeof (int)); vis_lbreaks = (int *)xmalloc (vis_lbsize * sizeof (int)); +#if defined (HANDLE_MULTIBYTE) + _rl_wrapped_line = (int *)xmalloc (vis_lbsize * sizeof (int)); +#endif inv_lbreaks[0] = vis_lbreaks[0] = 0; } } @@ -372,6 +383,13 @@ rl_redisplay () int c_pos, inv_botlin, lb_botlin, lb_linenum; int newlines, lpos, temp; char *prompt_this_line; +#if defined (HANDLE_MULTIBYTE) + wchar_t wc; + size_t wc_bytes; + int wc_width; + mbstate_t ps; + int _rl_wrapped_multicolumn = 0; +#endif if (!readline_echoing_p) return; @@ -421,8 +439,8 @@ rl_redisplay () if (temp >= line_size) { line_size = (temp + 1024) - (temp % 1024); - visible_line = xrealloc (visible_line, line_size); - line = invisible_line = xrealloc (invisible_line, line_size); + visible_line = (char *)xrealloc (visible_line, line_size); + line = invisible_line = (char *)xrealloc (invisible_line, line_size); } strncpy (line + out, local_prompt, local_len); out += local_len; @@ -455,8 +473,8 @@ rl_redisplay () if (temp >= line_size) { line_size = (temp + 1024) - (temp % 1024); - visible_line = xrealloc (visible_line, line_size); - line = invisible_line = xrealloc (invisible_line, line_size); + visible_line = (char *)xrealloc (visible_line, line_size); + line = invisible_line = (char *)xrealloc (invisible_line, line_size); } strncpy (line + out, prompt_this_line, pmtlen); out += pmtlen; @@ -472,7 +490,8 @@ rl_redisplay () inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \ } \ } while (0) - + +#if defined (HANDLE_MULTIBYTE) #define CHECK_LPOS() \ do { \ lpos++; \ @@ -482,15 +501,36 @@ rl_redisplay () { \ inv_lbsize *= 2; \ inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \ + _rl_wrapped_line = (int *)xrealloc (_rl_wrapped_line, inv_lbsize * sizeof (int)); \ } \ inv_lbreaks[++newlines] = out; \ + _rl_wrapped_line[newlines] = _rl_wrapped_multicolumn; \ lpos = 0; \ } \ } while (0) +#else +#define CHECK_LPOS() \ + do { \ + lpos++; \ + if (lpos >= _rl_screenwidth) \ + { \ + if (newlines >= (inv_lbsize - 2)) \ + { \ + inv_lbsize *= 2; \ + inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \ + } \ + inv_lbreaks[++newlines] = out; \ + lpos = 0; \ + } \ + } while (0) +#endif /* inv_lbreaks[i] is where line i starts in the buffer. */ inv_lbreaks[newlines = 0] = 0; lpos = out - wrap_offset; +#if defined (HANDLE_MULTIBYTE) + memset (_rl_wrapped_line, 0, vis_lbsize); +#endif /* prompt_invis_chars_first_line is the number of invisible characters in the first physical line of the prompt. @@ -508,7 +548,11 @@ rl_redisplay () probably too much work for the benefit gained. How many people have prompts that exceed two physical lines? */ temp = ((newlines + 1) * _rl_screenwidth) + +#if 0 ((newlines == 0) ? prompt_invis_chars_first_line : 0) + +#else + ((newlines == 0 && local_prompt_prefix == 0) ? prompt_invis_chars_first_line : 0) + +#endif ((newlines == 1) ? wrap_offset : 0); inv_lbreaks[++newlines] = temp; @@ -523,15 +567,49 @@ rl_redisplay () It maintains an array of line breaks for display (inv_lbreaks). This handles expanding tabs for display and displaying meta characters. */ lb_linenum = 0; +#if defined (HANDLE_MULTIBYTE) + in = 0; + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + { + memset (&ps, 0, sizeof (mbstate_t)); + wc_bytes = mbrtowc (&wc, rl_line_buffer, rl_end, &ps); + } + else + wc_bytes = 1; + while (in < rl_end) +#else for (in = 0; in < rl_end; in++) +#endif { c = (unsigned char)rl_line_buffer[in]; +#if defined (HANDLE_MULTIBYTE) + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + { + if (wc_bytes == (size_t)-1 || wc_bytes == (size_t)-2) + { + /* Byte sequence is invalid or shortened. Assume that the + first byte represents a character. */ + wc_bytes = 1; + /* Assume that a character occupies a single column. */ + wc_width = 1; + memset (&ps, 0, sizeof (mbstate_t)); + } + else if (wc_bytes == (size_t)0) + break; /* Found '\0' */ + else + { + temp = wcwidth (wc); + wc_width = (temp < 0) ? 1 : temp; + } + } +#endif + if (out + 8 >= line_size) /* XXX - 8 for \t */ { line_size *= 2; - visible_line = xrealloc (visible_line, line_size); - invisible_line = xrealloc (invisible_line, line_size); + visible_line = (char *)xrealloc (visible_line, line_size); + invisible_line = (char *)xrealloc (invisible_line, line_size); line = invisible_line; } @@ -541,7 +619,11 @@ rl_redisplay () lb_linenum = newlines; } +#if defined (HANDLE_MULTIBYTE) + if (META_CHAR (c) && _rl_output_meta_chars == 0) /* XXX - clean up */ +#else if (META_CHAR (c)) +#endif { if (_rl_output_meta_chars == 0) { @@ -610,9 +692,52 @@ rl_redisplay () } else { +#if defined (HANDLE_MULTIBYTE) + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + { + register int i; + + _rl_wrapped_multicolumn = 0; + + if (_rl_screenwidth < lpos + wc_width) + for (i = lpos; i < _rl_screenwidth; i++) + { + /* The space will be removed in update_line() */ + line[out++] = ' '; + _rl_wrapped_multicolumn++; + CHECK_LPOS(); + } + if (in == rl_point) + { + c_pos = out; + lb_linenum = newlines; + } + for (i = in; i < in+wc_bytes; i++) + line[out++] = rl_line_buffer[i]; + for (i = 0; i < wc_width; i++) + CHECK_LPOS(); + } + else + { + line[out++] = c; + CHECK_LPOS(); + } +#else line[out++] = c; CHECK_LPOS(); +#endif } + +#if defined (HANDLE_MULTIBYTE) + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + { + in += wc_bytes; + wc_bytes = mbrtowc (&wc, rl_line_buffer + in, rl_end - in, &ps); + } + else + in++; +#endif + } line[out] = '\0'; if (c_pos < 0) @@ -650,7 +775,12 @@ rl_redisplay () only display a screenful. We should display the last screen, not the first. */ if (out >= _rl_screenchars) - out = _rl_screenchars - 1; + { + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + out = _rl_find_prev_mbchar (line, _rl_screenchars, MB_FIND_ANY); + else + out = _rl_screenchars - 1; + } /* The first line is at character position 0 in the buffer. The second and subsequent lines start at inv_lbreaks[N], offset by @@ -736,7 +866,10 @@ rl_redisplay () tputs (_rl_term_cr, 1, _rl_output_character_function); #endif _rl_output_some_chars (local_prompt, nleft); - _rl_last_c_pos = nleft; + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + _rl_last_c_pos = _rl_col_width(local_prompt, 0, nleft); + else + _rl_last_c_pos = nleft; } /* Where on that line? And where does that line start @@ -752,10 +885,15 @@ rl_redisplay () if (wrap_offset && cursor_linenum == 0 && nleft < _rl_last_c_pos) { _rl_backspace (_rl_last_c_pos - nleft); - _rl_last_c_pos = nleft; + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + _rl_last_c_pos = _rl_col_width (&visible_line[pos], 0, nleft); + else + _rl_last_c_pos = nleft; } - if (nleft != _rl_last_c_pos) + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + _rl_move_cursor_relative (nleft, &invisible_line[pos]); + else if (nleft != _rl_last_c_pos) _rl_move_cursor_relative (nleft, &invisible_line[pos]); } } @@ -900,6 +1038,11 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) register char *ofd, *ols, *oe, *nfd, *nls, *ne; int temp, lendiff, wsatend, od, nd; int current_invis_chars; + int col_lendiff, col_temp; +#if defined (HANDLE_MULTIBYTE) + mbstate_t ps_new, ps_old; + int new_offset, old_offset, tmp; +#endif /* If we're at the right edge of a terminal that supports xn, we're ready to wrap around, so do so. This fixes problems with knowing @@ -908,19 +1051,97 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) position of the cursor. */ temp = _rl_last_c_pos - W_OFFSET(_rl_last_v_pos, visible_wrap_offset); if (temp == _rl_screenwidth && _rl_term_autowrap && !_rl_horizontal_scroll_mode - && _rl_last_v_pos == current_line - 1) + && _rl_last_v_pos == current_line - 1) { - if (new[0]) - putc (new[0], rl_outstream); +#if defined (HANDLE_MULTIBYTE) + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + { + wchar_t wc; + mbstate_t ps; + int tempwidth, bytes; + size_t ret; + + /* This fixes only double-column characters, but if the wrapped + character comsumes more than three columns, spaces will be + inserted in the string buffer. */ + if (_rl_wrapped_line[current_line] > 0) + _rl_clear_to_eol (_rl_wrapped_line[current_line]); + + memset (&ps, 0, sizeof (mbstate_t)); + ret = mbrtowc (&wc, new, MB_CUR_MAX, &ps); + if (ret == (size_t)-1 || ret == (size_t)-2) + { + tempwidth = 1; + ret = 1; + } + else if (ret == 0) + tempwidth = 0; + else + tempwidth = wcwidth (wc); + + if (tempwidth > 0) + { + int count; + bytes = ret; + for (count = 0; count < bytes; count++) + putc (new[count], rl_outstream); + _rl_last_c_pos = tempwidth; + _rl_last_v_pos++; + memset (&ps, 0, sizeof (mbstate_t)); + ret = mbrtowc (&wc, old, MB_CUR_MAX, &ps); + if (ret != 0 && bytes != 0) + { + if (ret == (size_t)-1 || ret == (size_t)-2) + memmove (old+bytes, old+1, strlen (old+1)); + else + memmove (old+bytes, old+ret, strlen (old+ret)); + memcpy (old, new, bytes); + } + } + else + { + putc (' ', rl_outstream); + _rl_last_c_pos = 1; + _rl_last_v_pos++; + if (old[0] && new[0]) + old[0] = new[0]; + } + } else - putc (' ', rl_outstream); - _rl_last_c_pos = 1; /* XXX */ - _rl_last_v_pos++; - if (old[0] && new[0]) - old[0] = new[0]; +#endif + { + if (new[0]) + putc (new[0], rl_outstream); + else + putc (' ', rl_outstream); + _rl_last_c_pos = 1; /* XXX */ + _rl_last_v_pos++; + if (old[0] && new[0]) + old[0] = new[0]; + } } + /* Find first difference. */ +#if defined (HANDLE_MULTIBYTE) + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + { + memset (&ps_new, 0, sizeof(mbstate_t)); + memset (&ps_old, 0, sizeof(mbstate_t)); + + new_offset = old_offset = 0; + for (ofd = old, nfd = new; + (ofd - old < omax) && *ofd && + _rl_compare_chars(old, old_offset, &ps_old, new, new_offset, &ps_new); ) + { + old_offset = _rl_find_next_mbchar (old, old_offset, 1, MB_FIND_ANY); + new_offset = _rl_find_next_mbchar (new, new_offset, 1, MB_FIND_ANY); + ofd = old + old_offset; + nfd = new + new_offset; + } + } + else +#endif for (ofd = old, nfd = new; (ofd - old < omax) && *ofd && (*ofd == *nfd); ofd++, nfd++) @@ -937,6 +1158,33 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) return; wsatend = 1; /* flag for trailing whitespace */ + +#if defined (HANDLE_MULTIBYTE) + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + { + ols = old + _rl_find_prev_mbchar (old, oe - old, MB_FIND_ANY); + nls = new + _rl_find_prev_mbchar (new, ne - new, MB_FIND_ANY); + while ((ols > ofd) && (nls > nfd)) + { + memset (&ps_old, 0, sizeof (mbstate_t)); + memset (&ps_new, 0, sizeof (mbstate_t)); + + _rl_adjust_point (old, ols - old, &ps_old); + _rl_adjust_point (new, nls - new, &ps_new); + + if (_rl_compare_chars (old, ols - old, &ps_old, new, nls - new, &ps_new) == 0) + break; + + if (*ols == ' ') + wsatend = 0; + + ols = old + _rl_find_prev_mbchar (old, ols - old, MB_FIND_ANY); + nls = new + _rl_find_prev_mbchar (new, nls - new, MB_FIND_ANY); + } + } + else + { +#endif /* HANDLE_MULTIBYTE */ ols = oe - 1; /* find last same */ nls = ne - 1; while ((ols > ofd) && (nls > nfd) && (*ols == *nls)) @@ -946,18 +1194,38 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) ols--; nls--; } +#if defined (HANDLE_MULTIBYTE) + } +#endif if (wsatend) { ols = oe; nls = ne; } +#if defined (HANDLE_MULTIBYTE) + /* This may not work for stateful encoding, but who cares? To handle + stateful encoding properly, we have to scan each string from the + beginning and compare. */ + else if (_rl_compare_chars (ols, 0, NULL, nls, 0, NULL) == 0) +#else else if (*ols != *nls) +#endif { if (*ols) /* don't step past the NUL */ - ols++; + { + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + ols = old + _rl_find_next_mbchar (old, ols - old, 1, MB_FIND_ANY); + else + ols++; + } if (*nls) - nls++; + { + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + nls = new + _rl_find_next_mbchar (new, nls - new, 1, MB_FIND_ANY); + else + nls++; + } } /* count of invisible characters in the current invisible line. */ @@ -993,24 +1261,50 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) tputs (_rl_term_cr, 1, _rl_output_character_function); #endif _rl_output_some_chars (local_prompt, lendiff); - _rl_last_c_pos = lendiff; + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + _rl_last_c_pos = _rl_col_width (local_prompt, 0, lendiff); + else + _rl_last_c_pos = lendiff; } _rl_move_cursor_relative (od, old); - /* if (len (new) > len (old)) */ + /* if (len (new) > len (old)) + lendiff == difference in buffer + col_lendiff == difference on screen + When not using multibyte characters, these are equal */ lendiff = (nls - nfd) - (ols - ofd); + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + col_lendiff = _rl_col_width (new, nfd - new, nls - new) - _rl_col_width (old, ofd - old, ols - old); + else + col_lendiff = lendiff; /* If we are changing the number of invisible characters in a line, and the spot of first difference is before the end of the invisible chars, lendiff needs to be adjusted. */ if (current_line == 0 && !_rl_horizontal_scroll_mode && current_invis_chars != visible_wrap_offset) - lendiff += visible_wrap_offset - current_invis_chars; + { + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + { + lendiff += visible_wrap_offset - current_invis_chars; + col_lendiff += visible_wrap_offset - current_invis_chars; + } + else + { + lendiff += visible_wrap_offset - current_invis_chars; + col_lendiff = lendiff; + } + } /* Insert (diff (len (old), len (new)) ch. */ temp = ne - nfd; - if (lendiff > 0) + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + col_temp = _rl_col_width (new, nfd - new, ne - new); + else + col_temp = temp; + + if (col_lendiff > 0) /* XXX - was lendiff */ { /* Non-zero if we're increasing the number of lines. */ int gl = current_line >= _rl_vis_botlin && inv_botlin > _rl_vis_botlin; @@ -1018,7 +1312,7 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) use the terminal's capabilities. If we're growing the number of lines, make sure we actually cause the new line to wrap around on auto-wrapping terminals. */ - if (_rl_terminal_can_insert && ((2 * temp) >= lendiff || _rl_term_IC) && (!_rl_term_autowrap || !gl)) + if (_rl_terminal_can_insert && ((2 * col_temp) >= col_lendiff || _rl_term_IC) && (!_rl_term_autowrap || !gl)) { /* If lendiff > prompt_visible_length and _rl_last_c_pos == 0 and _rl_horizontal_scroll_mode == 1, inserting the characters with @@ -1027,8 +1321,8 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) if (*ols && (!_rl_horizontal_scroll_mode || _rl_last_c_pos > 0 || lendiff <= prompt_visible_length || !current_invis_chars)) { - insert_some_chars (nfd, lendiff); - _rl_last_c_pos += lendiff; + insert_some_chars (nfd, lendiff, col_lendiff); + _rl_last_c_pos += col_lendiff; } else if (*ols == 0) { @@ -1037,7 +1331,7 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) /* However, this screws up the rest of this block, which assumes you've done the insert because you can. */ _rl_output_some_chars (nfd, lendiff); - _rl_last_c_pos += lendiff; + _rl_last_c_pos += col_lendiff; } else { @@ -1045,7 +1339,7 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) the end. We have invisible characters in this line. This is a dumb update. */ _rl_output_some_chars (nfd, temp); - _rl_last_c_pos += temp; + _rl_last_c_pos += col_temp; return; } /* Copy (new) chars to screen from first diff to last match. */ @@ -1053,37 +1347,41 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) if ((temp - lendiff) > 0) { _rl_output_some_chars (nfd + lendiff, temp - lendiff); - _rl_last_c_pos += temp - lendiff; +#if 0 + _rl_last_c_pos += _rl_col_width (nfd+lendiff, 0, temp-lendiff) - col_lendiff; +#else + _rl_last_c_pos += _rl_col_width (nfd+lendiff, 0, temp-col_lendiff); +#endif } } else { /* cannot insert chars, write to EOL */ _rl_output_some_chars (nfd, temp); - _rl_last_c_pos += temp; + _rl_last_c_pos += col_temp; } } else /* Delete characters from line. */ { /* If possible and inexpensive to use terminal deletion, then do so. */ - if (_rl_term_dc && (2 * temp) >= -lendiff) + if (_rl_term_dc && (2 * col_temp) >= -col_lendiff) { /* If all we're doing is erasing the invisible characters in the prompt string, don't bother. It screws up the assumptions about what's on the screen. */ if (_rl_horizontal_scroll_mode && _rl_last_c_pos == 0 && -lendiff == visible_wrap_offset) - lendiff = 0; + col_lendiff = 0; - if (lendiff) - delete_chars (-lendiff); /* delete (diff) characters */ + if (col_lendiff) + delete_chars (-col_lendiff); /* delete (diff) characters */ /* Copy (new) chars to screen from first diff to last match */ temp = nls - nfd; if (temp > 0) { _rl_output_some_chars (nfd, temp); - _rl_last_c_pos += temp; + _rl_last_c_pos += _rl_col_width (nfd, 0, temp);; } } /* Otherwise, print over the existing material. */ @@ -1092,15 +1390,20 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) if (temp > 0) { _rl_output_some_chars (nfd, temp); - _rl_last_c_pos += temp; + _rl_last_c_pos += col_temp; } lendiff = (oe - old) - (ne - new); - if (lendiff) + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + col_lendiff = _rl_col_width (old, 0, oe - old) - _rl_col_width (new, 0, ne - new); + else + col_lendiff = lendiff; + + if (col_lendiff) { if (_rl_term_autowrap && current_line < inv_botlin) - space_to_eol (lendiff); + space_to_eol (col_lendiff); else - _rl_clear_to_eol (lendiff); + _rl_clear_to_eol (col_lendiff); } } } @@ -1146,7 +1449,10 @@ rl_on_new_line_with_prompt () prompt_last_line = rl_prompt; l = strlen (prompt_last_line); - _rl_last_c_pos = l; + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + _rl_last_c_pos = _rl_col_width (prompt_last_line, 0, l); + else + _rl_last_c_pos = l; /* Dissect prompt_last_line into screen lines. Note that here we have to use the real screenwidth. Readline's notion of screenwidth might be @@ -1201,7 +1507,14 @@ _rl_move_cursor_relative (new, data) register int i; /* If we don't have to do anything, then return. */ +#if defined (HANDLE_MULTIBYTE) + /* If we have multibyte characters, NEW is indexed by the buffer point in + a multibyte string, but _rl_last_c_pos is the display position. In + this case, NEW's display position is not obvious. */ + if ((MB_CUR_MAX == 1 || rl_byte_oriented ) && _rl_last_c_pos == new) return; +#else if (_rl_last_c_pos == new) return; +#endif /* It may be faster to output a CR, and then move forwards instead of moving backwards. */ @@ -1231,19 +1544,69 @@ _rl_move_cursor_relative (new, data) data is underneath the cursor. */ #if defined (HACK_TERMCAP_MOTION) if (_rl_term_forward_char) + { + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + { + int width; + width = _rl_col_width (data, _rl_last_c_pos, new); + for (i = 0; i < width; i++) + tputs (_rl_term_forward_char, 1, _rl_output_character_function); + } + else + { + for (i = _rl_last_c_pos; i < new; i++) + tputs (_rl_term_forward_char, 1, _rl_output_character_function); + } + } + else if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + { + tputs (_rl_term_cr, 1, _rl_output_character_function); + for (i = 0; i < new; i++) + putc (data[i], rl_outstream); + } + else for (i = _rl_last_c_pos; i < new; i++) - tputs (_rl_term_forward_char, 1, _rl_output_character_function); + putc (data[i], rl_outstream); + +#else /* !HACK_TERMCAP_MOTION */ + + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + { + tputs (_rl_term_cr, 1, _rl_output_character_function); + for (i = 0; i < new; i++) + putc (data[i], rl_outstream); + } else for (i = _rl_last_c_pos; i < new; i++) putc (data[i], rl_outstream); -#else - for (i = _rl_last_c_pos; i < new; i++) - putc (data[i], rl_outstream); -#endif /* HACK_TERMCAP_MOTION */ + +#endif /* !HACK_TERMCAP_MOTION */ + } +#if defined (HANDLE_MULTIBYTE) + /* NEW points to the buffer point, but _rl_last_c_pos is the display point. + The byte length of the string is probably bigger than the column width + of the string, which means that if NEW == _rl_last_c_pos, then NEW's + display point is less than _rl_last_c_pos. */ + else if (_rl_last_c_pos >= new) +#else else if (_rl_last_c_pos > new) - _rl_backspace (_rl_last_c_pos - new); - _rl_last_c_pos = new; +#endif + { + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + { + tputs (_rl_term_cr, 1, _rl_output_character_function); + for (i = 0; i < new; i++) + putc (data[i], rl_outstream); + } + else + _rl_backspace (_rl_last_c_pos - new); + } + + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + _rl_last_c_pos = _rl_col_width (data, 0, new); + else + _rl_last_c_pos = new; } /* PWP: move the cursor up or down. */ @@ -1330,7 +1693,7 @@ rl_character_len (c, pos) if (CTRL_CHAR (c) || c == RUBOUT) return (2); - return ((isprint (uc)) ? 1 : 2); + return ((ISPRINT (uc)) ? 1 : 2); } /* How to print things in the "echo-area". The prompt is treated as a @@ -1357,7 +1720,12 @@ rl_message (va_alist) format = va_arg (args, char *); #endif +#if defined (HAVE_VSNPRINTF) + vsnprintf (msg_buf, sizeof (msg_buf) - 1, format, args); +#else vsprintf (msg_buf, format, args); + msg_buf[sizeof(msg_buf) - 1] = '\0'; /* overflow? */ +#endif va_end (args); rl_display_prompt = msg_buf; @@ -1370,6 +1738,7 @@ rl_message (format, arg1, arg2) char *format; { sprintf (msg_buf, format, arg1, arg2); + msg_buf[sizeof(msg_buf) - 1] = '\0'; /* overflow? */ rl_display_prompt = msg_buf; (*rl_redisplay_function) (); return 0; @@ -1436,7 +1805,7 @@ _rl_make_prompt_for_search (pchar) if (saved_local_prompt == 0) { len = (rl_prompt && *rl_prompt) ? strlen (rl_prompt) : 0; - pmt = xmalloc (len + 2); + pmt = (char *)xmalloc (len + 2); if (len) strcpy (pmt, rl_prompt); pmt[len] = pchar; @@ -1445,7 +1814,7 @@ _rl_make_prompt_for_search (pchar) else { len = *saved_local_prompt ? strlen (saved_local_prompt) : 0; - pmt = xmalloc (len + 2); + pmt = (char *)xmalloc (len + 2); if (len) strcpy (pmt, saved_local_prompt); pmt[len] = pchar; @@ -1508,17 +1877,23 @@ _rl_clear_screen () rl_crlf (); } -/* Insert COUNT characters from STRING to the output stream. */ +/* Insert COUNT characters from STRING to the output stream at column COL. */ static void -insert_some_chars (string, count) +insert_some_chars (string, count, col) char *string; - int count; + int count, col; { + /* DEBUGGING */ + if (MB_CUR_MAX == 1 || rl_byte_oriented) + if (count != col) + fprintf(stderr, "readline: debug: insert_some_chars: count (%d) != col (%d)\n", count, col); + /* If IC is defined, then we do not have to "enter" insert mode. */ if (_rl_term_IC) { char *buffer; - buffer = tgoto (_rl_term_IC, 0, count); + + buffer = tgoto (_rl_term_IC, 0, col); tputs (buffer, 1, _rl_output_character_function); _rl_output_some_chars (string, count); } @@ -1534,7 +1909,7 @@ insert_some_chars (string, count) use that first to open up the space. */ if (_rl_term_ic && *_rl_term_ic) { - for (i = count; i--; ) + for (i = col; i--; ) tputs (_rl_term_ic, 1, _rl_output_character_function); } @@ -1589,11 +1964,8 @@ _rl_update_final () if (full_lines && _rl_term_autowrap && (VIS_LLEN(_rl_vis_botlin) == _rl_screenwidth)) { char *last_line; -#if 0 - last_line = &visible_line[inv_lbreaks[_rl_vis_botlin]]; -#else + last_line = &visible_line[vis_lbreaks[_rl_vis_botlin]]; -#endif _rl_move_cursor_relative (_rl_screenwidth - 1, last_line); _rl_clear_to_eol (0); putc (last_line[_rl_screenwidth - 1], rl_outstream); @@ -1738,3 +2110,87 @@ _rl_current_display_line () return ret; } + +#if defined (HANDLE_MULTIBYTE) +/* Calculate the number of screen columns occupied by STR from START to END. + In the case of multibyte characters with stateful encoding, we have to + scan from the beginning of the string to take the state into account. */ +static int +_rl_col_width (str, start, end) + char *str; + int start, end; +{ + wchar_t wc; + mbstate_t ps = {0}; + int tmp, point, width, max; + + if (end <= start) + return 0; + + point = 0; + max = end; + + while (point < start) + { + tmp = mbrlen (str + point, max, &ps); + if ((size_t)tmp == (size_t)-1 || (size_t)tmp == (size_t)-2) + { + /* In this case, the bytes are invalid or too short to compose a + multibyte character, so we assume that the first byte represents + a single character. */ + point++; + max--; + + /* Clear the state of the byte sequence, because in this case the + effect of mbstate is undefined. */ + memset (&ps, 0, sizeof (mbstate_t)); + } + else if (tmp == 0) + break; /* Found '\0' */ + else + { + point += tmp; + max -= tmp; + } + } + + /* If START is not a byte that starts a character, then POINT will be + greater than START. In this case, assume that (POINT - START) gives + a byte count that is the number of columns of difference. */ + width = point - start; + + while (point < end) + { + tmp = mbrtowc (&wc, str + point, max, &ps); + if ((size_t)tmp == (size_t)-1 || (size_t)tmp == (size_t)-2) + { + /* In this case, the bytes are invalid or too short to compose a + multibyte character, so we assume that the first byte represents + a single character. */ + point++; + max--; + + /* and assume that the byte occupies a single column. */ + width++; + + /* Clear the state of the byte sequence, because in this case the + effect of mbstate is undefined. */ + memset (&ps, 0, sizeof (mbstate_t)); + } + else if (tmp == 0) + break; /* Found '\0' */ + else + { + point += tmp; + max -= tmp; + tmp = wcwidth(wc); + width += (tmp >= 0) ? tmp : 1; + } + } + + width += point - end; + + return width; +} +#endif /* HANDLE_MULTIBYTE */ + |