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fix the prompt redrawal routines for multi-line prompts, prompts

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with embedded newline (\n), and multi-line prompts with embedded
newlines. single-line prompts should be not affected; prompts with
embedded carriage return (\r) should be fixed by this as well.
also fix prompt_redraw comment (can't remove the variable though,
since it's required if the shell inserts a newline after the prompt
herself).
tested on cygwin and interix
This commit is contained in:
tg
2006-08-02 11:33:37 +00:00
parent ad43cfa6cd
commit 790c312e9f
3 changed files with 25 additions and 45 deletions
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33
edit.c
View File

@@ -5,7 +5,7 @@
#include "sh.h" #include "sh.h"
__RCSID("$MirOS: src/bin/mksh/edit.c,v 1.28 2006/08/01 14:59:50 tg Exp $"); __RCSID("$MirOS: src/bin/mksh/edit.c,v 1.29 2006/08/02 11:33:36 tg Exp $");
/* tty driver characters we are interested in */ /* tty driver characters we are interested in */
typedef struct { typedef struct {
@@ -915,8 +915,7 @@ static char *macroptr;
static int cur_col; /* current column on line */ static int cur_col; /* current column on line */
static int pwidth; /* width of prompt */ static int pwidth; /* width of prompt */
static int prompt_trunc; /* how much of prompt to truncate */ static int prompt_trunc; /* how much of prompt to truncate */
static int prompt_skip; /* how much of prompt to skip */ static int prompt_redraw; /* 0 if newline forced after prompt */
static int prompt_redraw; /* do we need to redraw the prompt? */
static int winwidth; /* width of window */ static int winwidth; /* width of window */
static char *wbuf[2]; /* window buffers */ static char *wbuf[2]; /* window buffers */
static int wbuf_len; /* length of window buffers (x_cols-3)*/ static int wbuf_len; /* length of window buffers (x_cols-3)*/
@@ -1220,9 +1219,7 @@ static struct x_defbindings const x_defbindings[] = {
int int
x_emacs(char *buf, size_t len) x_emacs(char *buf, size_t len)
{ {
int c; int c, i;
const char *p;
int i;
u_char f; u_char f;
xbp = xbuf = buf; xend = buf + len; xbp = xbuf = buf; xend = buf + len;
@@ -1236,8 +1233,7 @@ x_emacs(char *buf, size_t len)
x_last_command = XFUNC_error; x_last_command = XFUNC_error;
xx_cols = x_cols; xx_cols = x_cols;
x_col = promptlen(prompt, &p); x_col = promptlen(prompt);
prompt_skip = p - prompt;
x_adj_ok = 1; x_adj_ok = 1;
prompt_redraw = 1; prompt_redraw = 1;
if (x_col > xx_cols) if (x_col > xx_cols)
@@ -1934,11 +1930,11 @@ x_redraw(int limit)
x_e_putc('\r'); x_e_putc('\r');
x_flush(); x_flush();
if (xbp == xbuf) { if (xbp == xbuf) {
x_col = promptlen(prompt, NULL); x_col = promptlen(prompt);
if (x_col > xx_cols) if (x_col > xx_cols)
x_trunc = (x_col / xx_cols) * xx_cols; x_trunc = (x_col / xx_cols) * xx_cols;
if (prompt_redraw) if (prompt_redraw)
pprompt(prompt + prompt_skip, x_trunc); pprompt(prompt, x_trunc);
} }
if (x_col > xx_cols) if (x_col > xx_cols)
x_col %= xx_cols; x_col %= xx_cols;
@@ -2934,7 +2930,6 @@ static int complete_word(int, int);
static int print_expansions(struct edstate *, int); static int print_expansions(struct edstate *, int);
static int char_len(int); static int char_len(int);
static void x_vi_zotc(int); static void x_vi_zotc(int);
static void vi_pprompt(int);
static void vi_error(void); static void vi_error(void);
static void vi_macro_reset(void); static void vi_macro_reset(void);
static int x_vi_putbuf(const char *, size_t); static int x_vi_putbuf(const char *, size_t);
@@ -3067,7 +3062,7 @@ x_vi(char *buf, size_t len)
int c; int c;
vi_reset(buf, len > LINE ? LINE : len); vi_reset(buf, len > LINE ? LINE : len);
vi_pprompt(1); pprompt(prompt, prompt_trunc);
x_flush(); x_flush();
while (1) { while (1) {
if (macro.p) { if (macro.p) {
@@ -4282,7 +4277,6 @@ free_edstate(struct edstate *old)
static void static void
edit_reset(char *buf, size_t len) edit_reset(char *buf, size_t len)
{ {
const char *p;
es = &ebuf; es = &ebuf;
es->cbuf = buf; es->cbuf = buf;
@@ -4294,8 +4288,7 @@ edit_reset(char *buf, size_t len)
es->cursor = undo->cursor = 0; es->cursor = undo->cursor = 0;
es->winleft = undo->winleft = 0; es->winleft = undo->winleft = 0;
cur_col = pwidth = promptlen(prompt, &p); cur_col = pwidth = promptlen(prompt);
prompt_skip = p - prompt;
if (pwidth > x_cols - 3 - MIN_EDIT_SPACE) { if (pwidth > x_cols - 3 - MIN_EDIT_SPACE) {
cur_col = x_cols - 3 - MIN_EDIT_SPACE; cur_col = x_cols - 3 - MIN_EDIT_SPACE;
prompt_trunc = pwidth - cur_col; prompt_trunc = pwidth - cur_col;
@@ -4581,7 +4574,7 @@ redraw_line(int newl)
x_putc('\r'); x_putc('\r');
x_putc('\n'); x_putc('\n');
} }
vi_pprompt(0); pprompt(prompt, prompt_trunc);
cur_col = pwidth; cur_col = pwidth;
morec = ' '; morec = ' ';
} }
@@ -4746,7 +4739,7 @@ ed_mov_opt(int col, char *wb)
if (col < cur_col) { if (col < cur_col) {
if (col + 1 < cur_col - col) { if (col + 1 < cur_col - col) {
x_putc('\r'); x_putc('\r');
vi_pprompt(0); pprompt(prompt, prompt_trunc);
cur_col = pwidth; cur_col = pwidth;
while (cur_col++ < col) while (cur_col++ < col)
x_putc(*wb++); x_putc(*wb++);
@@ -4976,12 +4969,6 @@ x_vi_zotc(int c)
x_putc(c); x_putc(c);
} }
static void
vi_pprompt(int full)
{
pprompt(prompt + (full ? 0 : prompt_skip), prompt_trunc);
}
static void static void
vi_error(void) vi_error(void)
{ {

33
lex.c
View File

@@ -2,7 +2,7 @@
#include "sh.h" #include "sh.h"
__RCSID("$MirOS: src/bin/mksh/lex.c,v 1.20 2006/08/02 10:42:30 tg Exp $"); __RCSID("$MirOS: src/bin/mksh/lex.c,v 1.21 2006/08/02 11:33:37 tg Exp $");
/* Structure to keep track of the lexing state and the various pieces of info /* Structure to keep track of the lexing state and the various pieces of info
* needed for each particular state. */ * needed for each particular state. */
@@ -58,7 +58,7 @@ static void gethere(void);
static Lex_state *push_state_(State_info *, Lex_state *); static Lex_state *push_state_(State_info *, Lex_state *);
static Lex_state *pop_state_(State_info *, Lex_state *); static Lex_state *pop_state_(State_info *, Lex_state *);
static int dopprompt(const char *, int, const char **, int); static int dopprompt(const char *, int, int);
static int backslash_skip; static int backslash_skip;
static int ignore_backslash_newline; static int ignore_backslash_newline;
@@ -1088,12 +1088,10 @@ set_prompt(int to, Source *s)
} }
static int static int
dopprompt(const char *cp, int ntruncate, const char **spp, int doprint) dopprompt(const char *cp, int ntruncate, int doprint)
{ {
int columns = 0, lines = 0; int columns = 0, lines = 0, indelimit = 0;
const char *sp = cp;
char delimiter = 0; char delimiter = 0;
int indelimit = 0;
/* Undocumented AT&T ksh feature: /* Undocumented AT&T ksh feature:
* If the second char in the prompt string is \r then the first char * If the second char in the prompt string is \r then the first char
@@ -1109,9 +1107,8 @@ dopprompt(const char *cp, int ntruncate, const char **spp, int doprint)
if (indelimit && *cp != delimiter) if (indelimit && *cp != delimiter)
; ;
else if (*cp == '\n' || *cp == '\r') { else if (*cp == '\n' || *cp == '\r') {
lines += columns / x_cols + ((*cp == '\n') ? 1 : 0);
columns = 0; columns = 0;
++lines;
sp = cp + 1;
} else if (*cp == '\t') { } else if (*cp == '\t') {
columns = (columns | 7) + 1; columns = (columns | 7) + 1;
} else if (*cp == '\b') { } else if (*cp == '\b') {
@@ -1121,31 +1118,27 @@ dopprompt(const char *cp, int ntruncate, const char **spp, int doprint)
indelimit = !indelimit; indelimit = !indelimit;
else else
columns++; columns++;
if (*cp != delimiter) { if (doprint && (*cp != delimiter) &&
if (ntruncate && !indelimit) (indelimit || (ntruncate < (x_cols * lines + columns))))
--ntruncate; shf_putc(*cp, shl_out);
else if (doprint)
shf_putc(*cp, shl_out);
}
} }
if (spp)
*spp = sp;
if (doprint) if (doprint)
shf_flush(shl_out); shf_flush(shl_out);
return (columns + (lines * x_cols)); indelimit = (x_cols * lines + columns);
return indelimit;
} }
void void
pprompt(const char *cp, int ntruncate) pprompt(const char *cp, int ntruncate)
{ {
dopprompt(cp, ntruncate, NULL, 1); dopprompt(cp, ntruncate, 1);
} }
int int
promptlen(const char *cp, const char **spp) promptlen(const char *cp)
{ {
return (dopprompt(cp, 0, spp, 0)); return (dopprompt(cp, 0, 0));
} }
/* Read the variable part of a ${...} expression (ie, up to but not including /* Read the variable part of a ${...} expression (ie, up to but not including

4
sh.h
View File

@@ -8,7 +8,7 @@
/* $OpenBSD: c_test.h,v 1.4 2004/12/20 11:34:26 otto Exp $ */ /* $OpenBSD: c_test.h,v 1.4 2004/12/20 11:34:26 otto Exp $ */
/* $OpenBSD: tty.h,v 1.5 2004/12/20 11:34:26 otto Exp $ */ /* $OpenBSD: tty.h,v 1.5 2004/12/20 11:34:26 otto Exp $ */
#define MKSH_SH_H_ID "$MirOS: src/bin/mksh/sh.h,v 1.30 2006/08/01 14:10:25 tg Exp $" #define MKSH_SH_H_ID "$MirOS: src/bin/mksh/sh.h,v 1.31 2006/08/02 11:33:37 tg Exp $"
#include <sys/param.h> #include <sys/param.h>
@@ -1081,7 +1081,7 @@ void yyerror(const char *, ...)
Source * pushs(int, Area *); Source * pushs(int, Area *);
void set_prompt(int, Source *); void set_prompt(int, Source *);
void pprompt(const char *, int); void pprompt(const char *, int);
int promptlen(const char *, const char **); int promptlen(const char *);
/* main.c */ /* main.c */
int include(const char *, int, char **, int); int include(const char *, int, char **, int);
int command(const char *); int command(const char *);