diff options
Diffstat (limited to 'cmd-line-utils/readline/display.c')
| -rw-r--r-- | cmd-line-utils/readline/display.c | 528 |
1 files changed, 340 insertions, 188 deletions
diff --git a/cmd-line-utils/readline/display.c b/cmd-line-utils/readline/display.c index 06cac3bfd32..47ff0615974 100644 --- a/cmd-line-utils/readline/display.c +++ b/cmd-line-utils/readline/display.c @@ -1,6 +1,6 @@ /* display.c -- readline redisplay facility. */ -/* Copyright (C) 1987-2004 Free Software Foundation, Inc. +/* Copyright (C) 1987-2006 Free Software Foundation, Inc. This file is part of the GNU Readline Library, a library for reading lines of text with interactive input and history editing. @@ -21,16 +21,12 @@ 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ #define READLINE_LIBRARY -#ifndef _XOPEN_SOURCE -#define _XOPEN_SOURCE 500 +#if defined (HAVE_CONFIG_H) +# include <config.h> #endif -#include "config_readline.h" - #include <sys/types.h> -/* To get SuSE 9.3 to define wcwidth() (in wchar.h) */ - #if defined (HAVE_UNISTD_H) # include <unistd.h> #endif /* HAVE_UNISTD_H */ @@ -63,10 +59,6 @@ extern char *strchr (), *strrchr (); #endif /* !strchr && !__STDC__ */ -#if defined (HACK_TERMCAP_MOTION) -extern char *_rl_term_forward_char; -#endif - static void update_line PARAMS((char *, char *, int, int, int, int)); static void space_to_eol PARAMS((int)); static void delete_chars PARAMS((int)); @@ -84,9 +76,18 @@ static int *inv_lbreaks, *vis_lbreaks; static int inv_lbsize, vis_lbsize; /* Heuristic used to decide whether it is faster to move from CUR to NEW - by backing up or outputting a carriage return and moving forward. */ + by backing up or outputting a carriage return and moving forward. CUR + and NEW are either both buffer positions or absolute screen positions. */ #define CR_FASTER(new, cur) (((new) + 1) < ((cur) - (new))) +/* _rl_last_c_pos is an absolute cursor position in multibyte locales and a + buffer index in others. This macro is used when deciding whether the + current cursor position is in the middle of a prompt string containing + invisible characters. */ +#define PROMPT_ENDING_INDEX \ + ((MB_CUR_MAX > 1 && rl_byte_oriented == 0) ? prompt_physical_chars : prompt_last_invisible+1) + + /* **************************************************************** */ /* */ /* Display stuff */ @@ -122,16 +123,25 @@ rl_voidfunc_t *rl_redisplay_function = rl_redisplay; int rl_display_fixed = 0; int _rl_suppress_redisplay = 0; +int _rl_want_redisplay = 0; /* The stuff that gets printed out before the actual text of the line. This is usually pointing to rl_prompt. */ char *rl_display_prompt = (char *)NULL; /* Pseudo-global variables declared here. */ + /* The visible cursor position. If you print some text, adjust this. */ +/* NOTE: _rl_last_c_pos is used as a buffer index when not in a locale + supporting multibyte characters, and an absolute cursor position when + in such a locale. This is an artifact of the donated multibyte support. + Care must be taken when modifying its value. */ int _rl_last_c_pos = 0; int _rl_last_v_pos = 0; +static int cpos_adjusted; +static int cpos_buffer_position; + /* Number of lines currently on screen minus 1. */ int _rl_vis_botlin = 0; @@ -158,6 +168,7 @@ static int line_size = 1024; include invisible characters. */ static char *local_prompt, *local_prompt_prefix; +static int local_prompt_len; static int prompt_visible_length, prompt_prefix_length; /* The number of invisible characters in the line currently being @@ -184,6 +195,19 @@ static int prompt_last_screen_line; static int prompt_physical_chars; +/* Variables to save and restore prompt and display information. */ + +/* These are getting numerous enough that it's time to create a struct. */ + +static char *saved_local_prompt; +static char *saved_local_prefix; +static int saved_last_invisible; +static int saved_visible_length; +static int saved_prefix_length; +static int saved_local_length; +static int saved_invis_chars_first_line; +static int saved_physical_chars; + /* Expand the prompt string S and return the number of visible characters in *LP, if LP is not null. This is currently more-or-less a placeholder for expansion. LIP, if non-null is a place to store the @@ -204,8 +228,8 @@ expand_prompt (pmt, lp, lip, niflp, vlp) char *pmt; int *lp, *lip, *niflp, *vlp; { - char *r, *ret, *p; - int l, rl, last, ignoring, ninvis, invfl, ind, pind, physchars; + char *r, *ret, *p, *igstart; + int l, rl, last, ignoring, ninvis, invfl, invflset, ind, pind, physchars; /* Short-circuit if we can. */ if ((MB_CUR_MAX <= 1 || rl_byte_oriented) && strchr (pmt, RL_PROMPT_START_IGNORE) == 0) @@ -218,7 +242,7 @@ expand_prompt (pmt, lp, lip, niflp, vlp) if (niflp) *niflp = 0; if (vlp) - *vlp = lp ? *lp : (int) strlen (r); + *vlp = lp ? *lp : strlen (r); return r; } @@ -226,20 +250,24 @@ expand_prompt (pmt, lp, lip, niflp, vlp) r = ret = (char *)xmalloc (l + 1); invfl = 0; /* invisible chars in first line of prompt */ + invflset = 0; /* we only want to set invfl once */ + igstart = 0; for (rl = ignoring = last = ninvis = physchars = 0, p = pmt; p && *p; p++) { /* This code strips the invisible character string markers RL_PROMPT_START_IGNORE and RL_PROMPT_END_IGNORE */ - if (*p == RL_PROMPT_START_IGNORE) + if (ignoring == 0 && *p == RL_PROMPT_START_IGNORE) /* XXX - check ignoring? */ { - ignoring++; + ignoring = 1; + igstart = p; continue; } else if (ignoring && *p == RL_PROMPT_END_IGNORE) { ignoring = 0; - last = r - ret - 1; + if (p != (igstart + 1)) + last = r - ret - 1; continue; } else @@ -253,7 +281,10 @@ expand_prompt (pmt, lp, lip, niflp, vlp) while (l--) *r++ = *p++; if (!ignoring) - rl += ind - pind; + { + rl += ind - pind; + physchars += _rl_col_width (pmt, pind, ind); + } else ninvis += ind - pind; p--; /* compensate for later increment */ @@ -263,16 +294,19 @@ expand_prompt (pmt, lp, lip, niflp, vlp) { *r++ = *p; if (!ignoring) - rl++; /* visible length byte counter */ + { + rl++; /* visible length byte counter */ + physchars++; + } else ninvis++; /* invisible chars byte counter */ } - if (rl >= _rl_screenwidth) - invfl = ninvis; - - if (ignoring == 0) - physchars++; + if (invflset == 0 && rl >= _rl_screenwidth) + { + invfl = ninvis; + invflset = 1; + } } } @@ -332,7 +366,9 @@ rl_expand_prompt (prompt) FREE (local_prompt_prefix); local_prompt = local_prompt_prefix = (char *)0; - prompt_last_invisible = prompt_visible_length = 0; + local_prompt_len = 0; + prompt_last_invisible = prompt_invis_chars_first_line = 0; + prompt_visible_length = prompt_physical_chars = 0; if (prompt == 0 || *prompt == 0) return (0); @@ -346,6 +382,7 @@ rl_expand_prompt (prompt) &prompt_invis_chars_first_line, &prompt_physical_chars); local_prompt_prefix = (char *)0; + local_prompt_len = local_prompt ? strlen (local_prompt) : 0; return (prompt_visible_length); } else @@ -355,15 +392,16 @@ rl_expand_prompt (prompt) local_prompt = expand_prompt (p, &prompt_visible_length, &prompt_last_invisible, (int *)NULL, - (int *)NULL); + &prompt_physical_chars); c = *t; *t = '\0'; /* The portion of the prompt string up to and including the final newline is now null-terminated. */ local_prompt_prefix = expand_prompt (prompt, &prompt_prefix_length, (int *)NULL, &prompt_invis_chars_first_line, - &prompt_physical_chars); + (int *)NULL); *t = c; + local_prompt_len = local_prompt ? strlen (local_prompt) : 0; return (prompt_prefix_length); } } @@ -420,13 +458,13 @@ rl_redisplay () { register int in, out, c, linenum, cursor_linenum; register char *line; - int c_pos, inv_botlin, lb_botlin, lb_linenum; - int newlines, lpos, temp, modmark; + int inv_botlin, lb_botlin, lb_linenum, o_cpos; + int newlines, lpos, temp, modmark, n0, num; char *prompt_this_line; #if defined (HANDLE_MULTIBYTE) wchar_t wc; size_t wc_bytes; - int wc_width= 0; + int wc_width; mbstate_t ps; int _rl_wrapped_multicolumn = 0; #endif @@ -435,16 +473,16 @@ rl_redisplay () return; if (!rl_display_prompt) - rl_display_prompt = (char*) ""; + rl_display_prompt = ""; - if (invisible_line == 0) + if (invisible_line == 0 || vis_lbreaks == 0) { init_line_structures (0); rl_on_new_line (); } /* Draw the line into the buffer. */ - c_pos = -1; + cpos_buffer_position = -1; line = invisible_line; out = inv_botlin = 0; @@ -471,24 +509,23 @@ rl_redisplay () number of non-visible characters in the prompt string. */ if (rl_display_prompt == rl_prompt || local_prompt) { - int local_len = local_prompt ? strlen (local_prompt) : 0; if (local_prompt_prefix && forced_display) _rl_output_some_chars (local_prompt_prefix, strlen (local_prompt_prefix)); - if (local_len > 0) + if (local_prompt_len > 0) { - temp = local_len + out + 2; + temp = local_prompt_len + out + 2; if (temp >= line_size) { line_size = (temp + 1024) - (temp % 1024); 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; + strncpy (line + out, local_prompt, local_prompt_len); + out += local_prompt_len; } line[out] = '\0'; - wrap_offset = local_len - prompt_visible_length; + wrap_offset = local_prompt_len - prompt_visible_length; } else { @@ -524,17 +561,6 @@ rl_redisplay () wrap_offset = prompt_invis_chars_first_line = 0; } -#if defined (HANDLE_MULTIBYTE) -#define CHECK_INV_LBREAKS() \ - do { \ - if (newlines >= (inv_lbsize - 2)) \ - { \ - 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)); \ - } \ - } while (0) -#else #define CHECK_INV_LBREAKS() \ do { \ if (newlines >= (inv_lbsize - 2)) \ @@ -543,7 +569,6 @@ rl_redisplay () inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \ } \ } while (0) -#endif #if defined (HANDLE_MULTIBYTE) #define CHECK_LPOS() \ @@ -589,6 +614,7 @@ rl_redisplay () #if defined (HANDLE_MULTIBYTE) memset (_rl_wrapped_line, 0, vis_lbsize); + num = 0; #endif /* prompt_invis_chars_first_line is the number of invisible characters in @@ -600,6 +626,7 @@ rl_redisplay () contents of the command line? */ while (lpos >= _rl_screenwidth) { + int z; /* fix from Darin Johnson <darin@acuson.com> for prompt string with invisible characters that is longer than the screen width. The prompt_invis_chars_first_line variable could be made into an array @@ -607,19 +634,47 @@ rl_redisplay () probably too much work for the benefit gained. How many people have prompts that exceed two physical lines? Additional logic fix from Edward Catmur <ed@catmur.co.uk> */ - temp = ((newlines + 1) * _rl_screenwidth) + - ((local_prompt_prefix == 0) ? ((newlines == 0) ? prompt_invis_chars_first_line - : ((newlines == 1) ? wrap_offset : 0)) - : ((newlines == 0) ? wrap_offset :0)); +#if defined (HANDLE_MULTIBYTE) + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + { + n0 = num; + temp = local_prompt_len; + while (num < temp) + { + z = _rl_col_width (local_prompt, n0, num); + if (z > _rl_screenwidth) + { + num = _rl_find_prev_mbchar (local_prompt, num, MB_FIND_ANY); + break; + } + else if (z == _rl_screenwidth) + break; + num++; + } + temp = num; + } + else +#endif /* !HANDLE_MULTIBYTE */ + temp = ((newlines + 1) * _rl_screenwidth); + + /* Now account for invisible characters in the current line. */ + temp += ((local_prompt_prefix == 0) ? ((newlines == 0) ? prompt_invis_chars_first_line + : ((newlines == 1) ? wrap_offset : 0)) + : ((newlines == 0) ? wrap_offset :0)); inv_lbreaks[++newlines] = temp; - lpos -= _rl_screenwidth; +#if defined (HANDLE_MULTIBYTE) + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + lpos -= _rl_col_width (local_prompt, n0, num); + else +#endif + lpos -= _rl_screenwidth; } prompt_last_screen_line = newlines; /* Draw the rest of the line (after the prompt) into invisible_line, keeping - track of where the cursor is (c_pos), the number of the line containing + track of where the cursor is (cpos_buffer_position), the number of the line containing the cursor (lb_linenum), the last line number (lb_botlin and inv_botlin). It maintains an array of line breaks for display (inv_lbreaks). This handles expanding tabs for display and displaying meta characters. */ @@ -672,7 +727,7 @@ rl_redisplay () if (in == rl_point) { - c_pos = out; + cpos_buffer_position = out; lb_linenum = newlines; } @@ -766,10 +821,10 @@ rl_redisplay () } if (in == rl_point) { - c_pos = out; + cpos_buffer_position = out; lb_linenum = newlines; } - for (i = in; i < (int) (in+wc_bytes); i++) + for (i = in; i < in+wc_bytes; i++) line[out++] = rl_line_buffer[i]; for (i = 0; i < wc_width; i++) CHECK_LPOS(); @@ -797,9 +852,9 @@ rl_redisplay () } line[out] = '\0'; - if (c_pos < 0) + if (cpos_buffer_position < 0) { - c_pos = out; + cpos_buffer_position = out; lb_linenum = newlines; } @@ -808,7 +863,7 @@ rl_redisplay () inv_lbreaks[newlines+1] = out; cursor_linenum = lb_linenum; - /* C_POS == position in buffer where cursor should be placed. + /* CPOS_BUFFER_POSITION == position in buffer where cursor should be placed. CURSOR_LINENUM == line number where the cursor should be placed. */ /* PWP: now is when things get a bit hairy. The visible and invisible @@ -822,7 +877,7 @@ rl_redisplay () if (_rl_horizontal_scroll_mode == 0 && _rl_term_up && *_rl_term_up) { - int nleft, pos, changed_screen_line; + int nleft, pos, changed_screen_line, tx; if (!rl_display_fixed || forced_display) { @@ -847,15 +902,38 @@ rl_redisplay () #define VIS_LLEN(l) ((l) > _rl_vis_botlin ? 0 : (vis_lbreaks[l+1] - vis_lbreaks[l])) #define INV_LLEN(l) (inv_lbreaks[l+1] - inv_lbreaks[l]) #define VIS_CHARS(line) (visible_line + vis_lbreaks[line]) -#define VIS_LINE(line) ((line) > _rl_vis_botlin) ? (char*) "" : VIS_CHARS(line) +#define VIS_LINE(line) ((line) > _rl_vis_botlin) ? "" : VIS_CHARS(line) #define INV_LINE(line) (invisible_line + inv_lbreaks[line]) /* For each line in the buffer, do the updating display. */ for (linenum = 0; linenum <= inv_botlin; linenum++) { + /* This can lead us astray if we execute a program that changes + the locale from a non-multibyte to a multibyte one. */ + o_cpos = _rl_last_c_pos; + cpos_adjusted = 0; update_line (VIS_LINE(linenum), INV_LINE(linenum), linenum, VIS_LLEN(linenum), INV_LLEN(linenum), inv_botlin); + /* update_line potentially changes _rl_last_c_pos, but doesn't + take invisible characters into account, since _rl_last_c_pos + is an absolute cursor position in a multibyte locale. See + if compensating here is the right thing, or if we have to + change update_line itself. There is one case in which + update_line adjusts _rl_last_c_pos itself (so it can pass + _rl_move_cursor_relative accurate values); it communicates + this back by setting cpos_adjusted. If we assume that + _rl_last_c_pos is correct (an absolute cursor position) each + time update_line is called, then we can assume in our + calculations that o_cpos does not need to be adjusted by + wrap_offset. */ + if (linenum == 0 && (MB_CUR_MAX > 1 && rl_byte_oriented == 0) && + cpos_adjusted == 0 && + _rl_last_c_pos != o_cpos && + _rl_last_c_pos > wrap_offset && + o_cpos < prompt_last_invisible) + _rl_last_c_pos -= wrap_offset; + /* If this is the line with the prompt, we might need to compensate for invisible characters in the new line. Do this only if there is not more than one new line (which @@ -867,7 +945,10 @@ rl_redisplay () (wrap_offset > visible_wrap_offset) && (_rl_last_c_pos < visible_first_line_len)) { - nleft = _rl_screenwidth + wrap_offset - _rl_last_c_pos; + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + nleft = _rl_screenwidth - _rl_last_c_pos; + else + nleft = _rl_screenwidth + wrap_offset - _rl_last_c_pos; if (nleft) _rl_clear_to_eol (nleft); } @@ -888,7 +969,7 @@ rl_redisplay () _rl_move_vert (linenum); _rl_move_cursor_relative (0, tt); _rl_clear_to_eol - ((linenum == _rl_vis_botlin) ? (int) strlen (tt) : _rl_screenwidth); + ((linenum == _rl_vis_botlin) ? strlen (tt) : _rl_screenwidth); } } _rl_vis_botlin = inv_botlin; @@ -903,7 +984,7 @@ rl_redisplay () the physical cursor position on the screen stays the same, but the buffer position needs to be adjusted to account for invisible characters. */ - if (cursor_linenum == 0 && wrap_offset) + if ((MB_CUR_MAX == 1 || rl_byte_oriented) && cursor_linenum == 0 && wrap_offset) _rl_last_c_pos += wrap_offset; } @@ -914,7 +995,11 @@ rl_redisplay () invisible character in the prompt string. */ nleft = prompt_visible_length + wrap_offset; if (cursor_linenum == 0 && wrap_offset > 0 && _rl_last_c_pos > 0 && - _rl_last_c_pos <= prompt_last_invisible && local_prompt) +#if 0 + _rl_last_c_pos <= PROMPT_ENDING_INDEX && local_prompt) +#else + _rl_last_c_pos < PROMPT_ENDING_INDEX && local_prompt) +#endif { #if defined (__MSDOS__) putc ('\r', rl_outstream); @@ -924,7 +1009,7 @@ rl_redisplay () #endif _rl_output_some_chars (local_prompt, nleft); if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) - _rl_last_c_pos = _rl_col_width (local_prompt, 0, nleft); + _rl_last_c_pos = _rl_col_width (local_prompt, 0, nleft) - wrap_offset; else _rl_last_c_pos = nleft; } @@ -933,21 +1018,35 @@ rl_redisplay () in the buffer? */ pos = inv_lbreaks[cursor_linenum]; /* nleft == number of characters in the line buffer between the - start of the line and the cursor position. */ - nleft = c_pos - pos; + start of the line and the desired cursor position. */ + nleft = cpos_buffer_position - pos; + + /* NLEFT is now a number of characters in a buffer. When in a + multibyte locale, however, _rl_last_c_pos is an absolute cursor + position that doesn't take invisible characters in the prompt + into account. We use a fudge factor to compensate. */ /* Since _rl_backspace() doesn't know about invisible characters in the prompt, and there's no good way to tell it, we compensate for those characters here and call _rl_backspace() directly. */ if (wrap_offset && cursor_linenum == 0 && nleft < _rl_last_c_pos) { - _rl_backspace (_rl_last_c_pos - nleft); + /* TX == new physical cursor position in multibyte locale. */ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) - _rl_last_c_pos = _rl_col_width (&visible_line[pos], 0, nleft); + tx = _rl_col_width (&visible_line[pos], 0, nleft) - visible_wrap_offset; else - _rl_last_c_pos = nleft; + tx = nleft; + if (_rl_last_c_pos > tx) + { + _rl_backspace (_rl_last_c_pos - tx); /* XXX */ + _rl_last_c_pos = tx; + } } + /* We need to note that in a multibyte locale we are dealing with + _rl_last_c_pos as an absolute cursor position, but moving to a + point specified by a buffer position (NLEFT) that doesn't take + invisible characters into account. */ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) _rl_move_cursor_relative (nleft, &invisible_line[pos]); else if (nleft != _rl_last_c_pos) @@ -966,11 +1065,11 @@ rl_redisplay () will be LMARGIN. */ /* The number of characters that will be displayed before the cursor. */ - ndisp = c_pos - wrap_offset; + ndisp = cpos_buffer_position - wrap_offset; nleft = prompt_visible_length + wrap_offset; /* Where the new cursor position will be on the screen. This can be longer than SCREENWIDTH; if it is, lmargin will be adjusted. */ - phys_c_pos = c_pos - (last_lmargin ? last_lmargin : wrap_offset); + phys_c_pos = cpos_buffer_position - (last_lmargin ? last_lmargin : wrap_offset); t = _rl_screenwidth / 3; /* If the number of characters had already exceeded the screenwidth, @@ -981,7 +1080,7 @@ rl_redisplay () two-thirds of the way across the screen. */ if (phys_c_pos > _rl_screenwidth - 2) { - lmargin = c_pos - (2 * t); + lmargin = cpos_buffer_position - (2 * t); if (lmargin < 0) lmargin = 0; /* If the left margin would be in the middle of a prompt with @@ -995,7 +1094,7 @@ rl_redisplay () { /* If we are moving back towards the beginning of the line and the last margin is no longer correct, compute a new one. */ - lmargin = ((c_pos - 1) / t) * t; /* XXX */ + lmargin = ((cpos_buffer_position - 1) / t) * t; /* XXX */ if (wrap_offset && lmargin > 0 && lmargin < nleft) lmargin = nleft; } @@ -1040,7 +1139,7 @@ rl_redisplay () if (visible_first_line_len > _rl_screenwidth) visible_first_line_len = _rl_screenwidth; - _rl_move_cursor_relative (c_pos - lmargin, &invisible_line[lmargin]); + _rl_move_cursor_relative (cpos_buffer_position - lmargin, &invisible_line[lmargin]); last_lmargin = lmargin; } } @@ -1106,7 +1205,10 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) the exact cursor position and cut-and-paste with certain terminal emulators. In this calculation, TEMP is the physical screen position of the cursor. */ - temp = _rl_last_c_pos - W_OFFSET(_rl_last_v_pos, visible_wrap_offset); + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + temp = _rl_last_c_pos; + else + 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) { @@ -1171,7 +1273,7 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) putc (new[0], rl_outstream); else putc (' ', rl_outstream); - _rl_last_c_pos = 1; /* XXX */ + _rl_last_c_pos = 1; _rl_last_v_pos++; if (old[0] && new[0]) old[0] = new[0]; @@ -1312,7 +1414,7 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) if (_rl_last_v_pos != current_line) { _rl_move_vert (current_line); - if (current_line == 0 && visible_wrap_offset) + if ((MB_CUR_MAX == 1 || rl_byte_oriented) && current_line == 0 && visible_wrap_offset) _rl_last_c_pos += visible_wrap_offset; } @@ -1328,11 +1430,11 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) sequences (like drawing the `unbold' sequence without a corresponding `bold') that manifests itself on certain terminals. */ - lendiff = local_prompt ? strlen (local_prompt) : 0; + lendiff = local_prompt_len; od = ofd - old; /* index of first difference in visible line */ if (current_line == 0 && !_rl_horizontal_scroll_mode && _rl_term_cr && lendiff > prompt_visible_length && _rl_last_c_pos > 0 && - od >= lendiff && _rl_last_c_pos <= prompt_last_invisible) + od >= lendiff && _rl_last_c_pos < PROMPT_ENDING_INDEX) { #if defined (__MSDOS__) putc ('\r', rl_outstream); @@ -1341,12 +1443,29 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) #endif _rl_output_some_chars (local_prompt, lendiff); if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) - _rl_last_c_pos = _rl_col_width (local_prompt, 0, lendiff); + { + /* We take wrap_offset into account here so we can pass correct + information to _rl_move_cursor_relative. */ + _rl_last_c_pos = _rl_col_width (local_prompt, 0, lendiff) - wrap_offset; + cpos_adjusted = 1; + } else _rl_last_c_pos = lendiff; } + /* When this function returns, _rl_last_c_pos is correct, and an absolute + cursor postion in multibyte mode, but a buffer index when not in a + multibyte locale. */ _rl_move_cursor_relative (od, old); +#if 1 +#if defined (HANDLE_MULTIBYTE) + /* We need to indicate that the cursor position is correct in the presence of + invisible characters in the prompt string. Let's see if setting this when + we make sure we're at the end of the drawn prompt string works. */ + if (current_line == 0 && MB_CUR_MAX > 1 && rl_byte_oriented == 0 && _rl_last_c_pos == prompt_physical_chars) + cpos_adjusted = 1; +#endif +#endif /* if (len (new) > len (old)) lendiff == difference in buffer @@ -1403,7 +1522,7 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) insert_some_chars (nfd, lendiff, col_lendiff); _rl_last_c_pos += col_lendiff; } - else if (*ols == 0 && lendiff > 0) + else if ((MB_CUR_MAX == 1 || rl_byte_oriented != 0) && *ols == 0 && lendiff > 0) { /* At the end of a line the characters do not have to be "inserted". They can just be placed on the screen. */ @@ -1442,6 +1561,10 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) /* cannot insert chars, write to EOL */ _rl_output_some_chars (nfd, temp); _rl_last_c_pos += col_temp; + /* If we're in a multibyte locale and were before the last invisible + char in the current line (which implies we just output some invisible + characters) we need to adjust _rl_last_c_pos, since it represents + a physical character position. */ } } else /* Delete characters from line. */ @@ -1473,7 +1596,7 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) if (temp > 0) { _rl_output_some_chars (nfd, temp); - _rl_last_c_pos += col_temp; + _rl_last_c_pos += col_temp; /* XXX */ } lendiff = (oe - old) - (ne - new); if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) @@ -1535,7 +1658,7 @@ rl_on_new_line_with_prompt () l = strlen (prompt_last_line); if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) - _rl_last_c_pos = _rl_col_width (prompt_last_line, 0, l); + _rl_last_c_pos = _rl_col_width (prompt_last_line, 0, l); /* XXX */ else _rl_last_c_pos = l; @@ -1570,10 +1693,11 @@ rl_on_new_line_with_prompt () int rl_forced_update_display () { + register char *temp; + if (visible_line) { - register char *temp = visible_line; - + temp = visible_line; while (*temp) *temp++ = '\0'; } @@ -1584,6 +1708,8 @@ rl_forced_update_display () } /* Move the cursor from _rl_last_c_pos to NEW, which are buffer indices. + (Well, when we don't have multibyte characters, _rl_last_c_pos is a + buffer index.) DATA is the contents of the screen line of interest; i.e., where the movement is being done. */ void @@ -1592,29 +1718,47 @@ _rl_move_cursor_relative (new, data) const char *data; { register int i; + int woff; /* number of invisible chars on current line */ + int cpos, dpos; /* current and desired cursor positions */ - /* If we don't have to do anything, then return. */ + woff = W_OFFSET (_rl_last_v_pos, wrap_offset); + cpos = _rl_last_c_pos; #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 and must be - calculated. */ - if (MB_CUR_MAX == 1 || rl_byte_oriented) + calculated. We need to account for invisible characters in this line, + as long as we are past them and they are counted by _rl_col_width. */ + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) { - if (_rl_last_c_pos == new) - return; + dpos = _rl_col_width (data, 0, new); + if (dpos > prompt_last_invisible) /* XXX - don't use woff here */ + { + dpos -= woff; + /* Since this will be assigned to _rl_last_c_pos at the end (more + precisely, _rl_last_c_pos == dpos when this function returns), + let the caller know. */ + cpos_adjusted = 1; + } } - else if (_rl_last_c_pos == _rl_col_width (data, 0, new)) - return; -#else - if (_rl_last_c_pos == new) return; + else #endif + dpos = new; + + /* If we don't have to do anything, then return. */ + if (cpos == dpos) + return; /* It may be faster to output a CR, and then move forwards instead of moving backwards. */ /* i == current physical cursor position. */ - i = _rl_last_c_pos - W_OFFSET(_rl_last_v_pos, visible_wrap_offset); - if (new == 0 || CR_FASTER (new, _rl_last_c_pos) || +#if defined (HANDLE_MULTIBYTE) + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + i = _rl_last_c_pos; + else +#endif + i = _rl_last_c_pos - woff; + if (dpos == 0 || CR_FASTER (dpos, _rl_last_c_pos) || (_rl_term_autowrap && i == _rl_screenwidth)) { #if defined (__MSDOS__) @@ -1622,10 +1766,10 @@ _rl_move_cursor_relative (new, data) #else tputs (_rl_term_cr, 1, _rl_output_character_function); #endif /* !__MSDOS__ */ - _rl_last_c_pos = 0; + cpos = _rl_last_c_pos = 0; } - if (_rl_last_c_pos < new) + if (cpos < dpos) { /* Move the cursor forward. We do it by printing the command to move the cursor forward if there is one, else print that @@ -1636,67 +1780,43 @@ _rl_move_cursor_relative (new, data) sequence telling the terminal to move forward one character. That kind of control is for people who don't know what the data is underneath the cursor. */ -#if defined (HACK_TERMCAP_MOTION) - if (_rl_term_forward_char) + + /* However, we need a handle on where the current display position is + in the buffer for the immediately preceding comment to be true. + In multibyte locales, we don't currently have that info available. + Without it, we don't know where the data we have to display begins + in the buffer and we have to go back to the beginning of the screen + line. In this case, we can use the terminal sequence to move forward + if it's available. */ + if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) { - if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) + if (_rl_term_forward_char) { - 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); + for (i = cpos; i < dpos; 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); + tputs (_rl_term_cr, 1, _rl_output_character_function); + for (i = 0; i < new; i++) + putc (data[i], rl_outstream); } } - 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++) + for (i = cpos; i < new; i++) 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); - -#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) #endif - { - if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) - _rl_backspace (_rl_last_c_pos - _rl_col_width (data, 0, new)); - else - _rl_backspace (_rl_last_c_pos - new); - } + else if (cpos > dpos) + _rl_backspace (cpos - dpos); - 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; + _rl_last_c_pos = dpos; } /* PWP: move the cursor up or down. */ @@ -1785,9 +1905,9 @@ rl_character_len (c, pos) return ((ISPRINT (uc)) ? 1 : 2); } - /* How to print things in the "echo-area". The prompt is treated as a mini-modeline. */ +static int msg_saved_prompt = 0; #if defined (USE_VARARGS) int @@ -1818,8 +1938,20 @@ rl_message (va_alist) #endif va_end (args); + if (saved_local_prompt == 0) + { + rl_save_prompt (); + msg_saved_prompt = 1; + } rl_display_prompt = msg_buf; + local_prompt = expand_prompt (msg_buf, &prompt_visible_length, + &prompt_last_invisible, + &prompt_invis_chars_first_line, + &prompt_physical_chars); + local_prompt_prefix = (char *)NULL; + local_prompt_len = local_prompt ? strlen (local_prompt) : 0; (*rl_redisplay_function) (); + return 0; } #else /* !USE_VARARGS */ @@ -1829,8 +1961,21 @@ rl_message (format, arg1, arg2) { sprintf (msg_buf, format, arg1, arg2); msg_buf[sizeof(msg_buf) - 1] = '\0'; /* overflow? */ + rl_display_prompt = msg_buf; + if (saved_local_prompt == 0) + { + rl_save_prompt (); + msg_saved_prompt = 1; + } + local_prompt = expand_prompt (msg_buf, &prompt_visible_length, + &prompt_last_invisible, + &prompt_invis_chars_first_line, + &prompt_physical_chars); + local_prompt_prefix = (char *)NULL; + local_prompt_len = local_prompt ? strlen (local_prompt) : 0; (*rl_redisplay_function) (); + return 0; } #endif /* !USE_VARARGS */ @@ -1840,6 +1985,11 @@ int rl_clear_message () { rl_display_prompt = rl_prompt; + if (msg_saved_prompt) + { + rl_restore_prompt (); + msg_saved_prompt = 0; + } (*rl_redisplay_function) (); return 0; } @@ -1849,32 +1999,26 @@ rl_reset_line_state () { rl_on_new_line (); - rl_display_prompt = rl_prompt ? rl_prompt : (char*) ""; + rl_display_prompt = rl_prompt ? rl_prompt : ""; forced_display = 1; return 0; } -/* These are getting numerous enough that it's time to create a struct. */ - -static char *saved_local_prompt; -static char *saved_local_prefix; -static int saved_last_invisible; -static int saved_visible_length; -static int saved_invis_chars_first_line; -static int saved_physical_chars; - void rl_save_prompt () { saved_local_prompt = local_prompt; saved_local_prefix = local_prompt_prefix; + saved_prefix_length = prompt_prefix_length; + saved_local_length = local_prompt_len; saved_last_invisible = prompt_last_invisible; saved_visible_length = prompt_visible_length; saved_invis_chars_first_line = prompt_invis_chars_first_line; saved_physical_chars = prompt_physical_chars; local_prompt = local_prompt_prefix = (char *)0; - prompt_last_invisible = prompt_visible_length = 0; + local_prompt_len = 0; + prompt_last_invisible = prompt_visible_length = prompt_prefix_length = 0; prompt_invis_chars_first_line = prompt_physical_chars = 0; } @@ -1886,10 +2030,18 @@ rl_restore_prompt () local_prompt = saved_local_prompt; local_prompt_prefix = saved_local_prefix; + local_prompt_len = saved_local_length; + prompt_prefix_length = saved_prefix_length; prompt_last_invisible = saved_last_invisible; prompt_visible_length = saved_visible_length; prompt_invis_chars_first_line = saved_invis_chars_first_line; prompt_physical_chars = saved_physical_chars; + + /* can test saved_local_prompt to see if prompt info has been saved. */ + saved_local_prompt = saved_local_prefix = (char *)0; + saved_local_length = 0; + saved_last_invisible = saved_visible_length = saved_prefix_length = 0; + saved_invis_chars_first_line = saved_physical_chars = 0; } char * @@ -1897,11 +2049,15 @@ _rl_make_prompt_for_search (pchar) int pchar; { int len; - char *pmt; + char *pmt, *p; rl_save_prompt (); - if (saved_local_prompt == 0) + /* We've saved the prompt, and can do anything with the various prompt + strings we need before they're restored. We want the unexpanded + portion of the prompt string after any final newline. */ + p = rl_prompt ? strrchr (rl_prompt, '\n') : 0; + if (p == 0) { len = (rl_prompt && *rl_prompt) ? strlen (rl_prompt) : 0; pmt = (char *)xmalloc (len + 2); @@ -1912,17 +2068,17 @@ _rl_make_prompt_for_search (pchar) } else { - len = *saved_local_prompt ? strlen (saved_local_prompt) : 0; + p++; + len = strlen (p); pmt = (char *)xmalloc (len + 2); if (len) - strcpy (pmt, saved_local_prompt); + strcpy (pmt, p); pmt[len] = pchar; pmt[len+1] = '\0'; - local_prompt = savestring (pmt); - prompt_last_invisible = saved_last_invisible; - prompt_visible_length = saved_visible_length + 1; - } + } + /* will be overwritten by expand_prompt, called from rl_message */ + prompt_physical_chars = saved_physical_chars + 1; return pmt; } @@ -1983,6 +2139,9 @@ insert_some_chars (string, count, col) char *string; int count, col; { +#if defined (__MSDOS__) || defined (__MINGW32__) + _rl_output_some_chars (string, count); +#else /* DEBUGGING */ if (MB_CUR_MAX == 1 || rl_byte_oriented) if (count != col) @@ -2021,6 +2180,7 @@ insert_some_chars (string, count, col) if (_rl_term_ei && *_rl_term_ei) tputs (_rl_term_ei, 1, _rl_output_character_function); } +#endif /* __MSDOS__ || __MINGW32__ */ } /* Delete COUNT characters from the display line. */ @@ -2031,6 +2191,7 @@ delete_chars (count) if (count > _rl_screenwidth) /* XXX */ return; +#if !defined (__MSDOS__) && !defined (__MINGW32__) if (_rl_term_DC && *_rl_term_DC) { char *buffer; @@ -2043,6 +2204,7 @@ delete_chars (count) while (count--) tputs (_rl_term_dc, 1, _rl_output_character_function); } +#endif /* !__MSDOS__ && !__MINGW32__ */ } void @@ -2066,7 +2228,8 @@ _rl_update_final () char *last_line; last_line = &visible_line[vis_lbreaks[_rl_vis_botlin]]; - _rl_move_cursor_relative (_rl_screenwidth - 1, last_line); + cpos_buffer_position = -1; /* don't know where we are in buffer */ + _rl_move_cursor_relative (_rl_screenwidth - 1, last_line); /* XXX */ _rl_clear_to_eol (0); putc (last_line[_rl_screenwidth - 1], rl_outstream); } @@ -2098,18 +2261,10 @@ static void redraw_prompt (t) char *t; { - char *oldp, *oldl, *oldlprefix; - int oldlen, oldlast, oldplen, oldninvis, oldphyschars; + char *oldp; - /* Geez, I should make this a struct. */ oldp = rl_display_prompt; - oldl = local_prompt; - oldlprefix = local_prompt_prefix; - oldlen = prompt_visible_length; - oldplen = prompt_prefix_length; - oldlast = prompt_last_invisible; - oldninvis = prompt_invis_chars_first_line; - oldphyschars = prompt_physical_chars; + rl_save_prompt (); rl_display_prompt = t; local_prompt = expand_prompt (t, &prompt_visible_length, @@ -2117,16 +2272,12 @@ redraw_prompt (t) &prompt_invis_chars_first_line, &prompt_physical_chars); local_prompt_prefix = (char *)NULL; + local_prompt_len = local_prompt ? strlen (local_prompt) : 0; + rl_forced_update_display (); rl_display_prompt = oldp; - local_prompt = oldl; - local_prompt_prefix = oldlprefix; - prompt_visible_length = oldlen; - prompt_prefix_length = oldplen; - prompt_last_invisible = oldlast; - prompt_invis_chars_first_line = oldninvis; - prompt_physical_chars = oldphyschars; + rl_restore_prompt(); } /* Redisplay the current line after a SIGWINCH is received. */ @@ -2230,10 +2381,11 @@ _rl_col_width (str, start, end) if (end <= start) return 0; + memset (&ps, 0, sizeof (mbstate_t)); + point = 0; max = end; - memset (&ps, 0, sizeof(ps)); while (point < start) { tmp = mbrlen (str + point, max, &ps); |