diff options
Diffstat (limited to 'readline/display.c')
| -rw-r--r-- | readline/display.c | 917 |
1 files changed, 710 insertions, 207 deletions
diff --git a/readline/display.c b/readline/display.c index 9fff8cc..dec0de3 100644 --- a/readline/display.c +++ b/readline/display.c @@ -47,6 +47,7 @@ /* System-specific feature definitions and include files. */ #include "rldefs.h" +#include "rlmbutil.h" /* Termcap library stuff. */ #include "tcap.h" @@ -63,14 +64,21 @@ extern char *strchr (), *strrchr (); #endif /* !strchr && !__STDC__ */ #if defined (HACK_TERMCAP_MOTION) -extern char *term_forward_char; +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; @@ -107,7 +115,7 @@ static int inv_lbsize, vis_lbsize; RL_DISPLAY_FIXED variable. This is good for efficiency. */ /* Application-specific redisplay function. */ -VFunction *rl_redisplay_function = rl_redisplay; +rl_voidfunc_t *rl_redisplay_function = rl_redisplay; /* Global variables declared here. */ /* What YOU turn on when you have handled all redisplay yourself. */ @@ -146,27 +154,40 @@ static int forced_display; /* Default and initial buffer size. Can grow. */ static int line_size = 1024; +/* Variables to keep track of the expanded prompt string, which may + include invisible characters. */ + static char *local_prompt, *local_prompt_prefix; -static int visible_length, prefix_length; +static int prompt_visible_length, prompt_prefix_length; /* The number of invisible characters in the line currently being displayed on the screen. */ static int visible_wrap_offset; -/* static so it can be shared between rl_redisplay and update_line */ +/* The number of invisible characters in the prompt string. Static so it + can be shared between rl_redisplay and update_line */ static int wrap_offset; -/* The index of the last invisible_character in the prompt string. */ -static int last_invisible; +/* The index of the last invisible character in the prompt string. */ +static int prompt_last_invisible; /* The length (buffer offset) of the first line of the last (possibly multi-line) buffer displayed on the screen. */ static int visible_first_line_len; +/* Number of invisible characters on the first physical line of the prompt. + Only valid when the number of physical characters in the prompt exceeds + (or is equal to) _rl_screenwidth. */ +static int prompt_invis_chars_first_line; + +static int prompt_last_screen_line; + /* 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 - index of the last invisible character in the returned string. */ + index of the last invisible character in the returned string. NIFLP, + if non-zero, is a place to store the number of invisible characters in + the first prompt line. */ /* Current implementation: \001 (^A) start non-visible characters @@ -176,12 +197,12 @@ static int visible_first_line_len; \002 are assumed to be `visible'. */ static char * -expand_prompt (pmt, lp, lip) +expand_prompt (pmt, lp, lip, niflp) char *pmt; - int *lp, *lip; + int *lp, *lip, *niflp; { char *r, *ret, *p; - int l, rl, last, ignoring; + int l, rl, last, ignoring, ninvis, invfl; /* Short-circuit if we can. */ if (strchr (pmt, RL_PROMPT_START_IGNORE) == 0) @@ -193,9 +214,11 @@ expand_prompt (pmt, lp, lip) } l = strlen (pmt); - r = ret = xmalloc (l + 1); - - for (rl = ignoring = last = 0, p = pmt; p && *p; p++) + r = ret = (char *)xmalloc (l + 1); + + invfl = 0; /* invisible chars in first line of prompt */ + + for (rl = ignoring = last = ninvis = 0, p = pmt; p && *p; p++) { /* This code strips the invisible character string markers RL_PROMPT_START_IGNORE and RL_PROMPT_END_IGNORE */ @@ -215,14 +238,23 @@ expand_prompt (pmt, lp, lip) *r++ = *p; if (!ignoring) rl++; + else + ninvis++; + if (rl == _rl_screenwidth) + invfl = ninvis; } } + if (rl < _rl_screenwidth) + invfl = ninvis; + *r = '\0'; if (lp) *lp = rl; if (lip) *lip = last; + if (niflp) + *niflp = invfl; return ret; } @@ -234,7 +266,7 @@ _rl_strip_prompt (pmt) { char *ret; - ret = expand_prompt (pmt, (int *)NULL, (int *)NULL); + ret = expand_prompt (pmt, (int *)NULL, (int *)NULL, (int *)NULL); return ret; } @@ -246,8 +278,8 @@ _rl_strip_prompt (pmt) * (portion after the final newline) * local_prompt_prefix = portion before last newline of rl_display_prompt, * expanded via expand_prompt - * visible_length = number of visible characters in local_prompt - * prefix_length = number of visible characters in local_prompt_prefix + * prompt_visible_length = number of visible characters in local_prompt + * prompt_prefix_length = number of visible characters in local_prompt_prefix * * This function is called once per call to readline(). It may also be * called arbitrarily to expand the primary prompt. @@ -263,12 +295,11 @@ rl_expand_prompt (prompt) int c; /* Clear out any saved values. */ - if (local_prompt) - free (local_prompt); - if (local_prompt_prefix) - free (local_prompt_prefix); + FREE (local_prompt); + FREE (local_prompt_prefix); + local_prompt = local_prompt_prefix = (char *)0; - last_invisible = visible_length = 0; + prompt_last_invisible = prompt_visible_length = 0; if (prompt == 0 || *prompt == 0) return (0); @@ -276,22 +307,28 @@ rl_expand_prompt (prompt) p = strrchr (prompt, '\n'); if (!p) { - /* The prompt is only one line. */ - local_prompt = expand_prompt (prompt, &visible_length, &last_invisible); + /* The prompt is only one logical line, though it might wrap. */ + local_prompt = expand_prompt (prompt, &prompt_visible_length, + &prompt_last_invisible, + &prompt_invis_chars_first_line); local_prompt_prefix = (char *)0; - return (visible_length); + return (prompt_visible_length); } else { /* The prompt spans multiple lines. */ t = ++p; - local_prompt = expand_prompt (p, &visible_length, &last_invisible); + local_prompt = expand_prompt (p, &prompt_visible_length, + &prompt_last_invisible, + &prompt_invis_chars_first_line); 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, &prefix_length, (int *)NULL); + local_prompt_prefix = expand_prompt (prompt, &prompt_prefix_length, + (int *)NULL, + &prompt_invis_chars_first_line); *t = c; - return (prefix_length); + return (prompt_prefix_length); } } @@ -310,16 +347,16 @@ 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++) @@ -334,6 +371,9 @@ 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; } } @@ -347,6 +387,13 @@ 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; @@ -396,14 +443,14 @@ 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; } line[out] = '\0'; - wrap_offset = local_len - visible_length; + wrap_offset = local_len - prompt_visible_length; } else { @@ -430,13 +477,13 @@ 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; line[out] = '\0'; - wrap_offset = 0; + wrap_offset = prompt_invis_chars_first_line = 0; } #define CHECK_INV_LBREAKS() \ @@ -447,51 +494,126 @@ rl_redisplay () inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \ } \ } while (0) - + +#if defined (HANDLE_MULTIBYTE) #define CHECK_LPOS() \ do { \ lpos++; \ - if (lpos >= screenwidth) \ + if (lpos >= _rl_screenwidth) \ { \ 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)); \ } \ 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. + wrap_offset - prompt_invis_chars_first_line is the number of invis + chars on the second line. */ - /* XXX - what if lpos is already >= screenwidth before we start drawing the + /* what if lpos is already >= _rl_screenwidth before we start drawing the contents of the command line? */ - while (lpos >= screenwidth) + while (lpos >= _rl_screenwidth) { - /* XXX - possible fix from Darin Johnson <darin@acuson.com> for prompt - string with invisible characters that is longer than the screen - width. XXX - this doesn't work right if invisible characters have - to be put on the second screen line -- it adds too much (the number - of invisible chars after the screenwidth). */ - temp = ((newlines + 1) * screenwidth) + ((newlines == 0) ? wrap_offset : 0); + /* 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 + saying how many invisible characters there are per line, but that's + 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; - lpos -= screenwidth; + 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 + 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. */ 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; } @@ -501,15 +623,19 @@ 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) { sprintf (line + out, "\\%o", c); - if (lpos + 4 >= screenwidth) + if (lpos + 4 >= _rl_screenwidth) { - temp = screenwidth - lpos; + temp = _rl_screenwidth - lpos; CHECK_INV_LBREAKS (); inv_lbreaks[++newlines] = out + temp; lpos = 4 - temp; @@ -528,7 +654,7 @@ rl_redisplay () #if defined (DISPLAY_TABS) else if (c == '\t') { - register int temp, newout; + register int newout; #if 0 newout = (out | (int)7) + 1; @@ -536,10 +662,10 @@ rl_redisplay () newout = out + 8 - lpos % 8; #endif temp = newout - out; - if (lpos + temp >= screenwidth) + if (lpos + temp >= _rl_screenwidth) { register int temp2; - temp2 = screenwidth - lpos; + temp2 = _rl_screenwidth - lpos; CHECK_INV_LBREAKS (); inv_lbreaks[++newlines] = out + temp2; lpos = temp - temp2; @@ -554,7 +680,7 @@ rl_redisplay () } } #endif - else if (c == '\n' && _rl_horizontal_scroll_mode == 0 && term_up && *term_up) + else if (c == '\n' && _rl_horizontal_scroll_mode == 0 && _rl_term_up && *_rl_term_up) { line[out++] = '\0'; /* XXX - sentinel */ CHECK_INV_LBREAKS (); @@ -570,9 +696,52 @@ 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) @@ -586,7 +755,8 @@ rl_redisplay () inv_lbreaks[newlines+1] = out; cursor_linenum = lb_linenum; - /* C_POS == position in buffer where cursor should be placed. */ + /* C_POS == 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 line buffers are really multiple lines, which would wrap every @@ -597,7 +767,7 @@ rl_redisplay () otherwise, let long lines display in a single terminal line, and horizontally scroll it. */ - if (_rl_horizontal_scroll_mode == 0 && term_up && *term_up) + if (_rl_horizontal_scroll_mode == 0 && _rl_term_up && *_rl_term_up) { int nleft, pos, changed_screen_line; @@ -608,8 +778,13 @@ rl_redisplay () /* If we have more than a screenful of material to display, then only display a screenful. We should display the last screen, not the first. */ - if (out >= screenchars) - out = screenchars - 1; + if (out >= _rl_screenchars) + { + 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 @@ -639,7 +814,7 @@ rl_redisplay () (wrap_offset > visible_wrap_offset) && (_rl_last_c_pos < visible_first_line_len)) { - nleft = screenwidth + wrap_offset - _rl_last_c_pos; + nleft = _rl_screenwidth + wrap_offset - _rl_last_c_pos; if (nleft) _rl_clear_to_eol (nleft); } @@ -660,7 +835,7 @@ rl_redisplay () _rl_move_vert (linenum); _rl_move_cursor_relative (0, tt); _rl_clear_to_eol - ((linenum == _rl_vis_botlin) ? strlen (tt) : screenwidth); + ((linenum == _rl_vis_botlin) ? strlen (tt) : _rl_screenwidth); } } _rl_vis_botlin = inv_botlin; @@ -671,7 +846,7 @@ rl_redisplay () if (changed_screen_line) { _rl_move_vert (cursor_linenum); - /* If we moved up to the line with the prompt using term_up, + /* If we moved up to the line with the prompt using _rl_term_up, the physical cursor position on the screen stays the same, but the buffer position needs to be adjusted to account for invisible characters. */ @@ -684,18 +859,21 @@ rl_redisplay () the characters from the current cursor position. But we only need to reprint it if the cursor is before the last invisible character in the prompt string. */ - nleft = visible_length + wrap_offset; + nleft = prompt_visible_length + wrap_offset; if (cursor_linenum == 0 && wrap_offset > 0 && _rl_last_c_pos > 0 && - _rl_last_c_pos <= last_invisible && local_prompt) + _rl_last_c_pos <= prompt_last_invisible && local_prompt) { #if defined (__MSDOS__) putc ('\r', rl_outstream); #else - if (term_cr) - tputs (term_cr, 1, _rl_output_character_function); + if (_rl_term_cr) + 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 @@ -711,10 +889,15 @@ 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]); } } @@ -731,11 +914,11 @@ rl_redisplay () /* The number of characters that will be displayed before the cursor. */ ndisp = c_pos - wrap_offset; - nleft = visible_length + 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); - t = screenwidth / 3; + t = _rl_screenwidth / 3; /* If the number of characters had already exceeded the screenwidth, last_lmargin will be > 0. */ @@ -743,7 +926,7 @@ rl_redisplay () /* If the number of characters to be displayed is more than the screen width, compute the starting offset so that the cursor is about two-thirds of the way across the screen. */ - if (phys_c_pos > screenwidth - 2) + if (phys_c_pos > _rl_screenwidth - 2) { lmargin = c_pos - (2 * t); if (lmargin < 0) @@ -753,7 +936,7 @@ rl_redisplay () if (wrap_offset && lmargin > 0 && lmargin < nleft) lmargin = nleft; } - else if (ndisp < screenwidth - 2) /* XXX - was -1 */ + else if (ndisp < _rl_screenwidth - 2) /* XXX - was -1 */ lmargin = 0; else if (phys_c_pos < 1) { @@ -775,7 +958,7 @@ rl_redisplay () the whole line, indicate that with a special character at the right edge of the screen. If LMARGIN is 0, we need to take the wrap offset into account. */ - t = lmargin + M_OFFSET (lmargin, wrap_offset) + screenwidth; + t = lmargin + M_OFFSET (lmargin, wrap_offset) + _rl_screenwidth; if (t < out) line[t - 1] = '>'; @@ -785,8 +968,8 @@ rl_redisplay () update_line (&visible_line[last_lmargin], &invisible_line[lmargin], 0, - screenwidth + visible_wrap_offset, - screenwidth + (lmargin ? 0 : wrap_offset), + _rl_screenwidth + visible_wrap_offset, + _rl_screenwidth + (lmargin ? 0 : wrap_offset), 0); /* If the visible new line is shorter than the old, but the number @@ -797,12 +980,12 @@ rl_redisplay () (_rl_last_c_pos == out) && t < visible_first_line_len) { - nleft = screenwidth - t; + nleft = _rl_screenwidth - t; _rl_clear_to_eol (nleft); } visible_first_line_len = out - lmargin - M_OFFSET (lmargin, wrap_offset); - if (visible_first_line_len > screenwidth) - visible_first_line_len = screenwidth; + if (visible_first_line_len > _rl_screenwidth) + visible_first_line_len = _rl_screenwidth; _rl_move_cursor_relative (c_pos - lmargin, &invisible_line[lmargin]); last_lmargin = lmargin; @@ -812,11 +995,11 @@ rl_redisplay () /* Swap visible and non-visible lines. */ { - char *temp = visible_line; + char *vtemp = visible_line; int *itemp = vis_lbreaks, ntemp = vis_lbsize; visible_line = invisible_line; - invisible_line = temp; + invisible_line = vtemp; vis_lbreaks = inv_lbreaks; inv_lbreaks = itemp; @@ -859,6 +1042,11 @@ 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 @@ -866,20 +1054,98 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) 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 (temp == screenwidth && _rl_term_autowrap && !_rl_horizontal_scroll_mode - && _rl_last_v_pos == current_line - 1) + if (temp == _rl_screenwidth && _rl_term_autowrap && !_rl_horizontal_scroll_mode + && _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++) @@ -896,6 +1162,33 @@ 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)) @@ -905,18 +1198,38 @@ 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. */ @@ -943,33 +1256,59 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) lendiff = local_prompt ? strlen (local_prompt) : 0; od = ofd - old; /* index of first difference in visible line */ if (current_line == 0 && !_rl_horizontal_scroll_mode && - term_cr && lendiff > visible_length && _rl_last_c_pos > 0 && - od > lendiff && _rl_last_c_pos < last_invisible) + _rl_term_cr && lendiff > prompt_visible_length && _rl_last_c_pos > 0 && + od >= lendiff && _rl_last_c_pos <= prompt_last_invisible) { #if defined (__MSDOS__) putc ('\r', rl_outstream); #else - tputs (term_cr, 1, _rl_output_character_function); + 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; @@ -977,17 +1316,17 @@ 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 (terminal_can_insert && ((2 * temp) >= lendiff || 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 > visible_length and _rl_last_c_pos == 0 and + /* If lendiff > prompt_visible_length and _rl_last_c_pos == 0 and _rl_horizontal_scroll_mode == 1, inserting the characters with - term_IC or term_ic will screw up the screen because of the + _rl_term_IC or _rl_term_ic will screw up the screen because of the invisible characters. We need to just draw them. */ if (*ols && (!_rl_horizontal_scroll_mode || _rl_last_c_pos > 0 || - lendiff <= visible_length || !current_invis_chars)) + 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) { @@ -996,7 +1335,7 @@ 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 { @@ -1004,7 +1343,7 @@ 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. */ @@ -1012,37 +1351,41 @@ 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 (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. */ @@ -1051,15 +1394,20 @@ 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); } } } @@ -1105,12 +1453,15 @@ 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 one less, see terminal.c. */ - real_screenwidth = screenwidth + (_rl_term_autowrap ? 0 : 1); + real_screenwidth = _rl_screenwidth + (_rl_term_autowrap ? 0 : 1); _rl_last_v_pos = l / real_screenwidth; /* If the prompt length is a multiple of real_screenwidth, we don't know whether the cursor is at the end of the last line, or already at the @@ -1155,24 +1506,31 @@ rl_forced_update_display () void _rl_move_cursor_relative (new, data) int new; - char *data; + const char *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. */ /* 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) || - (_rl_term_autowrap && i == screenwidth)) + (_rl_term_autowrap && i == _rl_screenwidth)) { #if defined (__MSDOS__) putc ('\r', rl_outstream); #else - tputs (term_cr, 1, _rl_output_character_function); + tputs (_rl_term_cr, 1, _rl_output_character_function); #endif /* !__MSDOS__ */ _rl_last_c_pos = 0; } @@ -1189,20 +1547,70 @@ _rl_move_cursor_relative (new, data) That kind of control is for people who don't know what the data is underneath the cursor. */ #if defined (HACK_TERMCAP_MOTION) - if (term_forward_char) + 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 (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. */ @@ -1212,7 +1620,7 @@ _rl_move_vert (to) { register int delta, i; - if (_rl_last_v_pos == to || to > screenheight) + if (_rl_last_v_pos == to || to > _rl_screenheight) return; if ((delta = to - _rl_last_v_pos) > 0) @@ -1222,7 +1630,7 @@ _rl_move_vert (to) #if defined (__MSDOS__) putc ('\r', rl_outstream); #else - tputs (term_cr, 1, _rl_output_character_function); + tputs (_rl_term_cr, 1, _rl_output_character_function); #endif _rl_last_c_pos = 0; } @@ -1231,14 +1639,14 @@ _rl_move_vert (to) #ifdef __MSDOS__ int row, col; - i = fflush (rl_outstream); /* make sure the cursor pos is current! */ + l = fflush (rl_outstream); /* make sure the cursor pos is current! */ ScreenGetCursor (&row, &col); ScreenSetCursor ((row + to - _rl_last_v_pos), col); delta = i; #else /* !__MSDOS__ */ - if (term_up && *term_up) + if (_rl_term_up && *_rl_term_up) for (i = 0; i < -delta; i++) - tputs (term_up, 1, _rl_output_character_function); + tputs (_rl_term_up, 1, _rl_output_character_function); #endif /* !__MSDOS__ */ } @@ -1298,7 +1706,7 @@ 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 @@ -1325,7 +1733,12 @@ 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; @@ -1338,6 +1751,7 @@ 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; @@ -1373,25 +1787,23 @@ rl_save_prompt () { saved_local_prompt = local_prompt; saved_local_prefix = local_prompt_prefix; - saved_last_invisible = last_invisible; - saved_visible_length = visible_length; + saved_last_invisible = prompt_last_invisible; + saved_visible_length = prompt_visible_length; local_prompt = local_prompt_prefix = (char *)0; - last_invisible = visible_length = 0; + prompt_last_invisible = prompt_visible_length = 0; } void rl_restore_prompt () { - if (local_prompt) - free (local_prompt); - if (local_prompt_prefix) - free (local_prompt_prefix); + FREE (local_prompt); + FREE (local_prompt_prefix); local_prompt = saved_local_prompt; local_prompt_prefix = saved_local_prefix; - last_invisible = saved_last_invisible; - visible_length = saved_visible_length; + prompt_last_invisible = saved_last_invisible; + prompt_visible_length = saved_visible_length; } char * @@ -1406,7 +1818,7 @@ _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; @@ -1415,14 +1827,14 @@ _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; pmt[len+1] = '\0'; local_prompt = savestring (pmt); - last_invisible = saved_last_invisible; - visible_length = saved_visible_length + 1; + prompt_last_invisible = saved_last_invisible; + prompt_visible_length = saved_visible_length + 1; } return pmt; } @@ -1450,8 +1862,8 @@ _rl_clear_to_eol (count) int count; { #ifndef __MSDOS__ - if (term_clreol) - tputs (term_clreol, 1, _rl_output_character_function); + if (_rl_term_clreol) + tputs (_rl_term_clreol, 1, _rl_output_character_function); else #endif if (count) @@ -1479,27 +1891,33 @@ _rl_clear_screen () ScreenClear (); /* FIXME: only works in text modes */ ScreenSetCursor (0, 0); /* term_clrpag is "cl" which homes the cursor */ #else - if (term_clrpag) - tputs (term_clrpag, 1, _rl_output_character_function); + if (_rl_term_clrpag) + tputs (_rl_term_clrpag, 1, _rl_output_character_function); else - crlf (); + rl_crlf (); #endif } -/* 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; { #ifdef __MSDOS__ _rl_output_some_chars (string, count); #else /* !__MSDOS__ */ + /* 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 (term_IC) + if (_rl_term_IC) { char *buffer; - buffer = tgoto (term_IC, 0, count); + + buffer = tgoto (_rl_term_IC, 0, col); tputs (buffer, 1, _rl_output_character_function); _rl_output_some_chars (string, count); } @@ -1508,15 +1926,15 @@ insert_some_chars (string, count) register int i; /* If we have to turn on insert-mode, then do so. */ - if (term_im && *term_im) - tputs (term_im, 1, _rl_output_character_function); + if (_rl_term_im && *_rl_term_im) + tputs (_rl_term_im, 1, _rl_output_character_function); /* If there is a special command for inserting characters, then use that first to open up the space. */ - if (term_ic && *term_ic) + if (_rl_term_ic && *_rl_term_ic) { - for (i = count; i--; ) - tputs (term_ic, 1, _rl_output_character_function); + for (i = col; i--; ) + tputs (_rl_term_ic, 1, _rl_output_character_function); } /* Print the text. */ @@ -1524,8 +1942,8 @@ insert_some_chars (string, count) /* If there is a string to turn off insert mode, we had best use it now. */ - if (term_ei && *term_ei) - tputs (term_ei, 1, _rl_output_character_function); + if (_rl_term_ei && *_rl_term_ei) + tputs (_rl_term_ei, 1, _rl_output_character_function); } #endif /* !__MSDOS__ */ } @@ -1535,21 +1953,21 @@ static void delete_chars (count) int count; { - if (count > screenwidth) /* XXX */ + if (count > _rl_screenwidth) /* XXX */ return; #ifndef __MSDOS__ - if (term_DC && *term_DC) + if (_rl_term_DC && *_rl_term_DC) { char *buffer; - buffer = tgoto (term_DC, count, count); + buffer = tgoto (_rl_term_DC, count, count); tputs (buffer, count, _rl_output_character_function); } else { - if (term_dc && *term_dc) + if (_rl_term_dc && *_rl_term_dc) while (count--) - tputs (term_dc, 1, _rl_output_character_function); + tputs (_rl_term_dc, 1, _rl_output_character_function); } #endif /* !__MSDOS__ */ } @@ -1570,20 +1988,17 @@ _rl_update_final () } _rl_move_vert (_rl_vis_botlin); /* If we've wrapped lines, remove the final xterm line-wrap flag. */ - if (full_lines && _rl_term_autowrap && (VIS_LLEN(_rl_vis_botlin) == screenwidth)) + 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 (screenwidth - 1, last_line); + _rl_move_cursor_relative (_rl_screenwidth - 1, last_line); _rl_clear_to_eol (0); - putc (last_line[screenwidth - 1], rl_outstream); + putc (last_line[_rl_screenwidth - 1], rl_outstream); } _rl_vis_botlin = 0; - crlf (); + rl_crlf (); fflush (rl_outstream); rl_display_fixed++; } @@ -1592,12 +2007,12 @@ _rl_update_final () static void cr () { - if (term_cr) + if (_rl_term_cr) { #if defined (__MSDOS__) putc ('\r', rl_outstream); #else - tputs (term_cr, 1, _rl_output_character_function); + tputs (_rl_term_cr, 1, _rl_output_character_function); #endif _rl_last_c_pos = 0; } @@ -1611,27 +2026,31 @@ redraw_prompt (t) char *t; { char *oldp, *oldl, *oldlprefix; - int oldlen, oldlast, oldplen; + int oldlen, oldlast, oldplen, oldninvis; /* Geez, I should make this a struct. */ oldp = rl_display_prompt; oldl = local_prompt; oldlprefix = local_prompt_prefix; - oldlen = visible_length; - oldplen = prefix_length; - oldlast = last_invisible; + oldlen = prompt_visible_length; + oldplen = prompt_prefix_length; + oldlast = prompt_last_invisible; + oldninvis = prompt_invis_chars_first_line; rl_display_prompt = t; - local_prompt = expand_prompt (t, &visible_length, &last_invisible); + local_prompt = expand_prompt (t, &prompt_visible_length, + &prompt_last_invisible, + &prompt_invis_chars_first_line); local_prompt_prefix = (char *)NULL; rl_forced_update_display (); rl_display_prompt = oldp; local_prompt = oldl; local_prompt_prefix = oldlprefix; - visible_length = oldlen; - prefix_length = oldplen; - last_invisible = oldlast; + prompt_visible_length = oldlen; + prompt_prefix_length = oldplen; + prompt_last_invisible = oldlast; + prompt_invis_chars_first_line = oldninvis; } /* Redisplay the current line after a SIGWINCH is received. */ @@ -1642,31 +2061,31 @@ _rl_redisplay_after_sigwinch () /* Clear the current line and put the cursor at column 0. Make sure the right thing happens if we have wrapped to a new screen line. */ - if (term_cr) + if (_rl_term_cr) { #if defined (__MSDOS__) putc ('\r', rl_outstream); #else - tputs (term_cr, 1, _rl_output_character_function); + tputs (_rl_term_cr, 1, _rl_output_character_function); #endif _rl_last_c_pos = 0; #if defined (__MSDOS__) - space_to_eol (screenwidth); + space_to_eol (_rl_screenwidth); putc ('\r', rl_outstream); #else - if (term_clreol) - tputs (term_clreol, 1, _rl_output_character_function); + if (_rl_term_clreol) + tputs (_rl_term_clreol, 1, _rl_output_character_function); else { - space_to_eol (screenwidth); - tputs (term_cr, 1, _rl_output_character_function); + space_to_eol (_rl_screenwidth); + tputs (_rl_term_cr, 1, _rl_output_character_function); } #endif if (_rl_last_v_pos > 0) _rl_move_vert (0); } else - crlf (); + rl_crlf (); /* Redraw only the last line of a multi-line prompt. */ t = strrchr (rl_display_prompt, '\n'); @@ -1707,14 +2126,98 @@ _rl_current_display_line () /* Find out whether or not there might be invisible characters in the editing buffer. */ if (rl_display_prompt == rl_prompt) - nleft = _rl_last_c_pos - screenwidth - rl_visible_prompt_length; + nleft = _rl_last_c_pos - _rl_screenwidth - rl_visible_prompt_length; else - nleft = _rl_last_c_pos - screenwidth; + nleft = _rl_last_c_pos - _rl_screenwidth; if (nleft > 0) - ret = 1 + nleft / screenwidth; + ret = 1 + nleft / _rl_screenwidth; else ret = 0; 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 */ + |