/* $OpenBSD: edit.c,v 1.33 2007/08/02 10:50:25 fgsch Exp $ */ /* $OpenBSD: edit.h,v 1.8 2005/03/28 21:28:22 deraadt Exp $ */ /* $OpenBSD: emacs.c,v 1.41 2007/08/02 10:50:25 fgsch Exp $ */ /* $OpenBSD: vi.c,v 1.23 2006/04/10 14:38:59 jaredy Exp $ */ #include "sh.h" __RCSID("$MirOS: src/bin/mksh/edit.c,v 1.148 2008/12/13 17:02:12 tg Exp $"); /* tty driver characters we are interested in */ typedef struct { int erase; int kill; int werase; int intr; int quit; int eof; } X_chars; X_chars edchars; /* x_fc_glob() flags */ #define XCF_COMMAND BIT(0) /* Do command completion */ #define XCF_FILE BIT(1) /* Do file completion */ #define XCF_FULLPATH BIT(2) /* command completion: store full path */ #define XCF_COMMAND_FILE (XCF_COMMAND|XCF_FILE) static int modified; /* buffer has been "modified" */ static char holdbuf[LINE]; /* place to hold last edit buffer */ static int x_getc(void); static void x_putcf(int); static bool x_mode(bool); static int x_do_comment(char *, int, int *); static void x_print_expansions(int, char *const *, bool); static int x_cf_glob(int, const char *, int, int, int *, int *, char ***, bool *); static int x_longest_prefix(int, char *const *); static int x_basename(const char *, const char *); static void x_free_words(int, char **); static int x_escape(const char *, size_t, int (*)(const char *, size_t)); static int x_emacs(char *, size_t); static void x_init_emacs(void); static void x_init_prompt(void); #ifndef MKSH_NOVI static int x_vi(char *, size_t); #endif #define x_flush() shf_flush(shl_out) #define x_putc(c) shf_putc((c), shl_out) #ifdef TIOCGWINSZ static void chkwinsz(void); #endif static int path_order_cmp(const void *aa, const void *bb); static char *add_glob(const char *, int); static void glob_table(const char *, XPtrV *, struct table *); static void glob_path(int flags, const char *, XPtrV *, const char *); static int x_file_glob(int, const char *, int, char ***); static int x_command_glob(int, const char *, int, char ***); static int x_locate_word(const char *, int, int, int *, bool *); static int x_e_getmbc(char *); /* +++ generic editing functions +++ */ /* Called from main */ void x_init(void) { /* set to -2 to force initial binding */ edchars.erase = edchars.kill = edchars.intr = edchars.quit = edchars.eof = -2; /* default value for deficient systems */ edchars.werase = 027; /* ^W */ #ifdef TIOCGWINSZ chkwinsz(); #endif x_init_emacs(); } #ifdef TIOCGWINSZ static void chkwinsz(void) { struct winsize ws; if (procpid == kshpid && ioctl(tty_fd, TIOCGWINSZ, &ws) >= 0) { struct tbl *vp; /* Do NOT export COLUMNS/LINES. Many applications * check COLUMNS/LINES before checking ws.ws_col/row, * so if the app is started with C/L in the environ * and the window is then resized, the app won't * see the change cause the environ doesn't change. */ if (ws.ws_col) { x_cols = ws.ws_col < MIN_COLS ? MIN_COLS : ws.ws_col; if ((vp = typeset("COLUMNS", 0, 0, 0, 0))) setint(vp, (long)ws.ws_col); } if (ws.ws_row && (vp = typeset("LINES", 0, 0, 0, 0))) setint(vp, (long)ws.ws_row); } } #endif /* * read an edited command line */ int x_read(char *buf, size_t len) { int i; x_mode(true); modified = 1; if (Flag(FEMACS) || Flag(FGMACS)) i = x_emacs(buf, len); #ifndef MKSH_NOVI else if (Flag(FVI)) i = x_vi(buf, len); #endif else i = -1; /* internal error */ x_mode(false); #ifdef TIOCGWINSZ chkwinsz(); #endif return i; } /* tty I/O */ static int x_getc(void) { char c; int n; while ((n = blocking_read(STDIN_FILENO, &c, 1)) < 0 && errno == EINTR) if (trap) { x_mode(false); runtraps(0); x_mode(true); } return ((n == 1) ? (int)(unsigned char)c : -1); } static void x_putcf(int c) { shf_putc(c, shl_out); } /* ------------------------------------------------------------------------- */ /* Misc common code for vi/emacs */ /* Handle the commenting/uncommenting of a line. * Returns: * 1 if a carriage return is indicated (comment added) * 0 if no return (comment removed) * -1 if there is an error (not enough room for comment chars) * If successful, *lenp contains the new length. Note: cursor should be * moved to the start of the line after (un)commenting. */ static int x_do_comment(char *buf, int bsize, int *lenp) { int i, j, len = *lenp; if (len == 0) return 1; /* somewhat arbitrary - it's what at&t ksh does */ /* Already commented? */ if (buf[0] == '#') { bool saw_nl = false; for (j = 0, i = 1; i < len; i++) { if (!saw_nl || buf[i] != '#') buf[j++] = buf[i]; saw_nl = buf[i] == '\n'; } *lenp = j; return 0; } else { int n = 1; /* See if there's room for the #s - 1 per \n */ for (i = 0; i < len; i++) if (buf[i] == '\n') n++; if (len + n >= bsize) return -1; /* Now add them... */ for (i = len, j = len + n; --i >= 0; ) { if (buf[i] == '\n') buf[--j] = '#'; buf[--j] = buf[i]; } buf[0] = '#'; *lenp += n; return 1; } } /* ------------------------------------------------------------------------- */ /* Common file/command completion code for vi/emacs */ static void x_print_expansions(int nwords, char * const *words, bool is_command) { bool use_copy = false; int prefix_len; XPtrV l = { NULL, NULL, NULL }; /* Check if all matches are in the same directory (in this * case, we want to omit the directory name) */ if (!is_command && (prefix_len = x_longest_prefix(nwords, words)) > 0) { int i; /* Special case for 1 match (prefix is whole word) */ if (nwords == 1) prefix_len = x_basename(words[0], NULL); /* Any (non-trailing) slashes in non-common word suffixes? */ for (i = 0; i < nwords; i++) if (x_basename(words[i] + prefix_len, NULL) > prefix_len) break; /* All in same directory? */ if (i == nwords) { while (prefix_len > 0 && words[0][prefix_len - 1] != '/') prefix_len--; use_copy = true; XPinit(l, nwords + 1); for (i = 0; i < nwords; i++) XPput(l, words[i] + prefix_len); XPput(l, NULL); } } /* * Enumerate expansions */ x_putc('\r'); x_putc('\n'); pr_list(use_copy ? (char **)XPptrv(l) : words); if (use_copy) XPfree(l); /* not x_free_words() */ } /* * Do file globbing: * - appends * to (copy of) str if no globbing chars found * - does expansion, checks for no match, etc. * - sets *wordsp to array of matching strings * - returns number of matching strings */ static int x_file_glob(int flags __unused, const char *str, int slen, char ***wordsp) { char *toglob, **words; int nwords, i, idx, escaping; XPtrV w; struct source *s, *sold; if (slen < 0) return 0; toglob = add_glob(str, slen); /* remove all escaping backward slashes */ escaping = 0; for (i = 0, idx = 0; toglob[i]; i++) { if (toglob[i] == '\\' && !escaping) { escaping = 1; continue; } /* specially escape escaped [ for globbing */ if (escaping && toglob[i] == '[') toglob[idx++] = QCHAR; toglob[idx] = toglob[i]; idx++; if (escaping) escaping = 0; } toglob[idx] = '\0'; /* * Convert "foo*" (toglob) to an array of strings (words) */ sold = source; s = pushs(SWSTR, ATEMP); s->start = s->str = toglob; source = s; if (yylex(ONEWORD | LQCHAR) != LWORD) { source = sold; internal_warningf("fileglob: substitute error"); return 0; } source = sold; XPinit(w, 32); expand(yylval.cp, &w, DOGLOB | DOTILDE | DOMARKDIRS); XPput(w, NULL); words = (char **)XPclose(w); for (nwords = 0; words[nwords]; nwords++) ; if (nwords == 1) { struct stat statb; /* Check if globbing failed (returned glob pattern), * but be careful (E.g. toglob == "ab*" when the file * "ab*" exists is not an error). * Also, check for empty result - happens if we tried * to glob something which evaluated to an empty * string (e.g., "$FOO" when there is no FOO, etc). */ if ((strcmp(words[0], toglob) == 0 && stat(words[0], &statb) < 0) || words[0][0] == '\0') { x_free_words(nwords, words); words = NULL; nwords = 0; } } afree(toglob, ATEMP); if ((*wordsp = nwords ? words : NULL) == NULL && words != NULL) x_free_words(nwords, words); return nwords; } /* Data structure used in x_command_glob() */ struct path_order_info { char *word; int base; int path_order; }; /* Compare routine used in x_command_glob() */ static int path_order_cmp(const void *aa, const void *bb) { const struct path_order_info *a = (const struct path_order_info *)aa; const struct path_order_info *b = (const struct path_order_info *)bb; int t; t = strcmp(a->word + a->base, b->word + b->base); return t ? t : a->path_order - b->path_order; } static int x_command_glob(int flags, const char *str, int slen, char ***wordsp) { char *toglob, *pat, *fpath; int nwords; XPtrV w; struct block *l; if (slen < 0) return 0; toglob = add_glob(str, slen); /* Convert "foo*" (toglob) to a pattern for future use */ pat = evalstr(toglob, DOPAT | DOTILDE); afree(toglob, ATEMP); XPinit(w, 32); glob_table(pat, &w, &keywords); glob_table(pat, &w, &aliases); glob_table(pat, &w, &builtins); for (l = e->loc; l; l = l->next) glob_table(pat, &w, &l->funs); glob_path(flags, pat, &w, path); if ((fpath = str_val(global("FPATH"))) != null) glob_path(flags, pat, &w, fpath); nwords = XPsize(w); if (!nwords) { *wordsp = NULL; XPfree(w); return 0; } /* Sort entries */ if (flags & XCF_FULLPATH) { /* Sort by basename, then path order */ struct path_order_info *info, *last_info = NULL; char **words = (char **)XPptrv(w); int i, path_order = 0; info = (struct path_order_info *) alloc(nwords * sizeof (struct path_order_info), ATEMP); for (i = 0; i < nwords; i++) { info[i].word = words[i]; info[i].base = x_basename(words[i], NULL); if (!last_info || info[i].base != last_info->base || strncmp(words[i], last_info->word, info[i].base) != 0) { last_info = &info[i]; path_order++; } info[i].path_order = path_order; } qsort(info, nwords, sizeof(struct path_order_info), path_order_cmp); for (i = 0; i < nwords; i++) words[i] = info[i].word; afree(info, ATEMP); } else { /* Sort and remove duplicate entries */ char **words = (char **)XPptrv(w); int i, j; qsort(words, nwords, sizeof (void *), xstrcmp); for (i = j = 0; i < nwords - 1; i++) { if (strcmp(words[i], words[i + 1])) words[j++] = words[i]; else afree(words[i], ATEMP); } words[j++] = words[i]; nwords = j; w.cur = (void **)&words[j]; } XPput(w, NULL); *wordsp = (char **)XPclose(w); return nwords; } #define IS_WORDC(c) (!ctype(c, C_LEX1) && (c) != '\'' && (c) != '"' && \ (c) != '`' && (c) != '=' && (c) != ':') static int x_locate_word(const char *buf, int buflen, int pos, int *startp, bool *is_commandp) { int start, end; /* Bad call? Probably should report error */ if (pos < 0 || pos > buflen) { *startp = pos; *is_commandp = false; return 0; } /* The case where pos == buflen happens to take care of itself... */ start = pos; /* Keep going backwards to start of word (has effect of allowing * one blank after the end of a word) */ for (; (start > 0 && IS_WORDC(buf[start - 1])) || (start > 1 && buf[start - 2] == '\\'); start--) ; /* Go forwards to end of word */ for (end = start; end < buflen && IS_WORDC(buf[end]); end++) { if (buf[end] == '\\' && (end + 1) < buflen) end++; } if (is_commandp) { bool iscmd; int p = start - 1; /* Figure out if this is a command */ while (p >= 0 && ksh_isspace(buf[p])) p--; iscmd = p < 0 || vstrchr(";|&()`", buf[p]); if (iscmd) { /* If command has a /, path, etc. is not searched; * only current directory is searched which is just * like file globbing. */ for (p = start; p < end; p++) if (buf[p] == '/') break; iscmd = p == end; } *is_commandp = iscmd; } *startp = start; return end - start; } static int x_cf_glob(int flags, const char *buf, int buflen, int pos, int *startp, int *endp, char ***wordsp, bool *is_commandp) { int len, nwords; char **words = NULL; bool is_command; len = x_locate_word(buf, buflen, pos, startp, &is_command); if (!(flags & XCF_COMMAND)) is_command = false; /* Don't do command globing on zero length strings - it takes too * long and isn't very useful. File globs are more likely to be * useful, so allow these. */ if (len == 0 && is_command) return 0; nwords = is_command ? x_command_glob(flags, buf + *startp, len, &words) : x_file_glob(flags, buf + *startp, len, &words); if (nwords == 0) { *wordsp = NULL; return 0; } if (is_commandp) *is_commandp = is_command; *wordsp = words; *endp = *startp + len; return nwords; } /* Given a string, copy it and possibly add a '*' to the end. The * new string is returned. */ static char * add_glob(const char *str, int slen) { char *toglob, *s; bool saw_slash = false; if (slen < 0) return NULL; strndupx(toglob, str, slen + 1, ATEMP); /* + 1 for "*" */ toglob[slen] = '\0'; /* * If the pathname contains a wildcard (an unquoted '*', * '?', or '[') or parameter expansion ('$'), or a ~username * with no trailing slash, then it is globbed based on that * value (i.e., without the appended '*'). */ for (s = toglob; *s; s++) { if (*s == '\\' && s[1]) s++; else if (*s == '*' || *s == '[' || *s == '?' || *s == '$' || (s[1] == '(' && vstrchr("*+?@!", *s))) break; else if (*s == '/') saw_slash = true; } if (!*s && (*toglob != '~' || saw_slash)) { toglob[slen] = '*'; toglob[slen + 1] = '\0'; } return toglob; } /* * Find longest common prefix */ static int x_longest_prefix(int nwords, char * const * words) { int i, j, prefix_len; char *p; if (nwords <= 0) return 0; prefix_len = strlen(words[0]); for (i = 1; i < nwords; i++) for (j = 0, p = words[i]; j < prefix_len; j++) if (p[j] != words[0][j]) { prefix_len = j; break; } return prefix_len; } static void x_free_words(int nwords, char **words) { while (nwords) afree(words[--nwords], ATEMP); afree(words, ATEMP); } /* Return the offset of the basename of string s (which ends at se - need not * be null terminated). Trailing slashes are ignored. If s is just a slash, * then the offset is 0 (actually, length - 1). * s Return * /etc 1 * /etc/ 1 * /etc// 1 * /etc/fo 5 * foo 0 * /// 2 * 0 */ static int x_basename(const char *s, const char *se) { const char *p; if (se == NULL) se = s + strlen(s); if (s == se) return 0; /* Skip trailing slashes */ for (p = se - 1; p > s && *p == '/'; p--) ; for (; p > s && *p != '/'; p--) ; if (*p == '/' && p + 1 < se) p++; return p - s; } /* * Apply pattern matching to a table: all table entries that match a pattern * are added to wp. */ static void glob_table(const char *pat, XPtrV *wp, struct table *tp) { struct tstate ts; struct tbl *te; ktwalk(&ts, tp); while ((te = ktnext(&ts))) if (gmatchx(te->name, pat, false)) { char *cp; strdupx(cp, te->name, ATEMP); XPput(*wp, cp); } } static void glob_path(int flags, const char *pat, XPtrV *wp, const char *lpath) { const char *sp, *p; char *xp, **words; int staterr, pathlen, patlen, oldsize, newsize, i, j; XString xs; patlen = strlen(pat) + 1; sp = lpath; Xinit(xs, xp, patlen + 128, ATEMP); while (sp) { xp = Xstring(xs, xp); if (!(p = cstrchr(sp, ':'))) p = sp + strlen(sp); pathlen = p - sp; if (pathlen) { /* Copy sp into xp, stuffing any MAGIC characters * on the way */ const char *s = sp; XcheckN(xs, xp, pathlen * 2); while (s < p) { if (ISMAGIC(*s)) *xp++ = MAGIC; *xp++ = *s++; } *xp++ = '/'; pathlen++; } sp = p; XcheckN(xs, xp, patlen); memcpy(xp, pat, patlen); oldsize = XPsize(*wp); glob_str(Xstring(xs, xp), wp, 1); /* mark dirs */ newsize = XPsize(*wp); /* Check that each match is executable... */ words = (char **)XPptrv(*wp); for (i = j = oldsize; i < newsize; i++) { staterr = 0; if ((search_access(words[i], X_OK, &staterr) >= 0) || (staterr == EISDIR)) { words[j] = words[i]; if (!(flags & XCF_FULLPATH)) memmove(words[j], words[j] + pathlen, strlen(words[j] + pathlen) + 1); j++; } else afree(words[i], ATEMP); } wp->cur = (void **)&words[j]; if (!*sp++) break; } Xfree(xs, xp); } /* * if argument string contains any special characters, they will * be escaped and the result will be put into edit buffer by * keybinding-specific function */ static int x_escape(const char *s, size_t len, int (*putbuf_func)(const char *, size_t)) { size_t add = 0, wlen = len; const char *ifs = str_val(local("IFS", 0)); int rval = 0; while (wlen - add > 0) if (vstrchr("\\$()[?{}*&;#|<>\"'`", s[add]) || vstrchr(ifs, s[add])) { if (putbuf_func(s, add) != 0) { rval = -1; break; } putbuf_func(s[add] == '\n' ? "'" : "\\", 1); putbuf_func(&s[add], 1); if (s[add] == '\n') putbuf_func("'", 1); add++; wlen -= add; s += add; add = 0; } else ++add; if (wlen > 0 && rval == 0) rval = putbuf_func(s, wlen); return (rval); } /* UTF-8 hack: high-level functions */ int utf_widthadj(const char *src, const char **dst) { size_t len; unsigned int wc; int width; if (!UTFMODE || (len = utf_mbtowc(&wc, src)) == (size_t)-1 || wc == 0) len = width = 1; else width = utf_wcwidth(wc); if (dst) *dst = src + len; return (width == -1 ? 2 : width); } int utf_mbswidth(const char *s) { size_t len; unsigned int wc; int width = 0, cw; if (!UTFMODE) return (strlen(s)); while (*s) if (((len = utf_mbtowc(&wc, s)) == (size_t)-1) || ((cw = utf_wcwidth(wc)) == -1)) { s++; width += 1; } else { s += len; width += cw; } return (width); } const char * utf_skipcols(const char *p, int cols) { int c = 0; while (c < cols) c += utf_widthadj(p, &p); return (p); } /* UTF-8 hack: low-level functions */ /* --- begin of wcwidth.c excerpt --- */ /*- * Markus Kuhn -- 2007-05-26 (Unicode 5.0) * * Permission to use, copy, modify, and distribute this software * for any purpose and without fee is hereby granted. The author * disclaims all warranties with regard to this software. */ __RCSID("$miros: src/lib/libc/i18n/wcwidth.c,v 1.8 2008/09/20 12:01:18 tg Exp $"); int utf_wcwidth(unsigned int c) { static const struct cbset { unsigned short first; unsigned short last; } comb[] = { { 0x0300, 0x036F }, { 0x0483, 0x0486 }, { 0x0488, 0x0489 }, { 0x0591, 0x05BD }, { 0x05BF, 0x05BF }, { 0x05C1, 0x05C2 }, { 0x05C4, 0x05C5 }, { 0x05C7, 0x05C7 }, { 0x0600, 0x0603 }, { 0x0610, 0x0615 }, { 0x064B, 0x065E }, { 0x0670, 0x0670 }, { 0x06D6, 0x06E4 }, { 0x06E7, 0x06E8 }, { 0x06EA, 0x06ED }, { 0x070F, 0x070F }, { 0x0711, 0x0711 }, { 0x0730, 0x074A }, { 0x07A6, 0x07B0 }, { 0x07EB, 0x07F3 }, { 0x0901, 0x0902 }, { 0x093C, 0x093C }, { 0x0941, 0x0948 }, { 0x094D, 0x094D }, { 0x0951, 0x0954 }, { 0x0962, 0x0963 }, { 0x0981, 0x0981 }, { 0x09BC, 0x09BC }, { 0x09C1, 0x09C4 }, { 0x09CD, 0x09CD }, { 0x09E2, 0x09E3 }, { 0x0A01, 0x0A02 }, { 0x0A3C, 0x0A3C }, { 0x0A41, 0x0A42 }, { 0x0A47, 0x0A48 }, { 0x0A4B, 0x0A4D }, { 0x0A70, 0x0A71 }, { 0x0A81, 0x0A82 }, { 0x0ABC, 0x0ABC }, { 0x0AC1, 0x0AC5 }, { 0x0AC7, 0x0AC8 }, { 0x0ACD, 0x0ACD }, { 0x0AE2, 0x0AE3 }, { 0x0B01, 0x0B01 }, { 0x0B3C, 0x0B3C }, { 0x0B3F, 0x0B3F }, { 0x0B41, 0x0B43 }, { 0x0B4D, 0x0B4D }, { 0x0B56, 0x0B56 }, { 0x0B82, 0x0B82 }, { 0x0BC0, 0x0BC0 }, { 0x0BCD, 0x0BCD }, { 0x0C3E, 0x0C40 }, { 0x0C46, 0x0C48 }, { 0x0C4A, 0x0C4D }, { 0x0C55, 0x0C56 }, { 0x0CBC, 0x0CBC }, { 0x0CBF, 0x0CBF }, { 0x0CC6, 0x0CC6 }, { 0x0CCC, 0x0CCD }, { 0x0CE2, 0x0CE3 }, { 0x0D41, 0x0D43 }, { 0x0D4D, 0x0D4D }, { 0x0DCA, 0x0DCA }, { 0x0DD2, 0x0DD4 }, { 0x0DD6, 0x0DD6 }, { 0x0E31, 0x0E31 }, { 0x0E34, 0x0E3A }, { 0x0E47, 0x0E4E }, { 0x0EB1, 0x0EB1 }, { 0x0EB4, 0x0EB9 }, { 0x0EBB, 0x0EBC }, { 0x0EC8, 0x0ECD }, { 0x0F18, 0x0F19 }, { 0x0F35, 0x0F35 }, { 0x0F37, 0x0F37 }, { 0x0F39, 0x0F39 }, { 0x0F71, 0x0F7E }, { 0x0F80, 0x0F84 }, { 0x0F86, 0x0F87 }, { 0x0F90, 0x0F97 }, { 0x0F99, 0x0FBC }, { 0x0FC6, 0x0FC6 }, { 0x102D, 0x1030 }, { 0x1032, 0x1032 }, { 0x1036, 0x1037 }, { 0x1039, 0x1039 }, { 0x1058, 0x1059 }, { 0x1160, 0x11FF }, { 0x135F, 0x135F }, { 0x1712, 0x1714 }, { 0x1732, 0x1734 }, { 0x1752, 0x1753 }, { 0x1772, 0x1773 }, { 0x17B4, 0x17B5 }, { 0x17B7, 0x17BD }, { 0x17C6, 0x17C6 }, { 0x17C9, 0x17D3 }, { 0x17DD, 0x17DD }, { 0x180B, 0x180D }, { 0x18A9, 0x18A9 }, { 0x1920, 0x1922 }, { 0x1927, 0x1928 }, { 0x1932, 0x1932 }, { 0x1939, 0x193B }, { 0x1A17, 0x1A18 }, { 0x1B00, 0x1B03 }, { 0x1B34, 0x1B34 }, { 0x1B36, 0x1B3A }, { 0x1B3C, 0x1B3C }, { 0x1B42, 0x1B42 }, { 0x1B6B, 0x1B73 }, { 0x1DC0, 0x1DCA }, { 0x1DFE, 0x1DFF }, { 0x200B, 0x200F }, { 0x202A, 0x202E }, { 0x2060, 0x2063 }, { 0x206A, 0x206F }, { 0x20D0, 0x20EF }, { 0x302A, 0x302F }, { 0x3099, 0x309A }, { 0xA806, 0xA806 }, { 0xA80B, 0xA80B }, { 0xA825, 0xA826 }, { 0xFB1E, 0xFB1E }, { 0xFE00, 0xFE0F }, { 0xFE20, 0xFE23 }, { 0xFEFF, 0xFEFF }, { 0xFFF9, 0xFFFB } }; size_t min = 0, mid, max = NELEM(comb) - 1; /* test for 8-bit control characters */ if (c < 32 || (c >= 0x7f && c < 0xa0)) return (c ? -1 : 0); /* binary search in table of non-spacing characters */ if (c >= comb[0].first && c <= comb[max].last) while (max >= min) { mid = (min + max) / 2; if (c > comb[mid].last) min = mid + 1; else if (c < comb[mid].first) max = mid - 1; else return (0); } /* if we arrive here, c is not a combining or C0/C1 control char */ return ((c >= 0x1100 && ( c <= 0x115f || /* Hangul Jamo init. consonants */ c == 0x2329 || c == 0x232a || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f) || /* CJK ... Yi */ (c >= 0xac00 && c <= 0xd7a3) || /* Hangul Syllables */ (c >= 0xf900 && c <= 0xfaff) || /* CJK Compatibility Ideographs */ (c >= 0xfe10 && c <= 0xfe19) || /* Vertical forms */ (c >= 0xfe30 && c <= 0xfe6f) || /* CJK Compatibility Forms */ (c >= 0xff00 && c <= 0xff60) || /* Fullwidth Forms */ (c >= 0xffe0 && c <= 0xffe6))) ? 2 : 1); } /* --- end of wcwidth.c excerpt --- */ /* +++ CESU-8 multibyte and wide character conversion crafted for mksh +++ */ size_t utf_mbtowc(unsigned int *dst, const char *src) { const unsigned char *s = (const unsigned char *)src; unsigned int c, wc; if ((wc = *s++) < 0x80) { out: if (dst != NULL) *dst = wc; return (wc ? ((const char *)s - src) : 0); } if (wc < 0xC2 || wc >= 0xF0) /* < 0xC0: spurious second byte */ /* < 0xC2: non-minimalistic mapping error in 2-byte seqs */ /* > 0xEF: beyond BMP */ goto ilseq; if (wc < 0xE0) { wc = (wc & 0x1F) << 6; if (((c = *s++) & 0xC0) != 0x80) goto ilseq; wc |= c & 0x3F; goto out; } wc = (wc & 0x0F) << 12; if (((c = *s++) & 0xC0) != 0x80) goto ilseq; wc |= (c & 0x3F) << 6; if (((c = *s++) & 0xC0) != 0x80) goto ilseq; wc |= c & 0x3F; /* Check for non-minimalistic mapping error in 3-byte seqs */ if (wc >= 0x0800 && wc <= 0xFFFD) goto out; ilseq: return ((size_t)(-1)); } size_t utf_wctomb(char *dst, unsigned int wc) { unsigned char *d; if (wc < 0x80) { *dst = wc; return (1); } d = (unsigned char *)dst; if (wc < 0x0800) *d++ = (wc >> 6) | 0xC0; else { *d++ = ((wc = wc > 0xFFFD ? 0xFFFD : wc) >> 12) | 0xE0; *d++ = ((wc >> 6) & 0x3F) | 0x80; } *d++ = (wc & 0x3F) | 0x80; return ((char *)d - dst); } /* +++ emacs editing mode +++ */ static Area aedit; #define AEDIT &aedit /* area for kill ring and macro defns */ #define MKCTRL(x) ((x) == '?' ? 0x7F : (x) & 0x1F) /* ASCII */ #define UNCTRL(x) ((x) ^ 0x40) /* ASCII */ /* values returned by keyboard functions */ #define KSTD 0 #define KEOL 1 /* ^M, ^J */ #define KINTR 2 /* ^G, ^C */ struct x_ftab { int (*xf_func)(int c); const char *xf_name; short xf_flags; }; struct x_defbindings { unsigned char xdb_func; /* XFUNC_* */ unsigned char xdb_tab; unsigned char xdb_char; }; #define XF_ARG 1 /* command takes number prefix */ #define XF_NOBIND 2 /* not allowed to bind to function */ #define XF_PREFIX 4 /* function sets prefix */ /* Separator for completion */ #define is_cfs(c) ((c) == ' ' || (c) == '\t' || (c) == '"' || (c) == '\'') /* Separator for motion */ #define is_mfs(c) (!(ksh_isalnux(c) || (c) == '$')) #define X_NTABS 3 /* normal, meta1, meta2 */ #define X_TABSZ 256 /* size of keydef tables etc */ /* Arguments for do_complete() * 0 = enumerate M-= complete as much as possible and then list * 1 = complete M-Esc * 2 = list M-? */ typedef enum { CT_LIST, /* list the possible completions */ CT_COMPLETE, /* complete to longest prefix */ CT_COMPLIST /* complete and then list (if non-exact) */ } Comp_type; /* * The following are used for my horizontal scrolling stuff */ static char *xbuf; /* beg input buffer */ static char *xend; /* end input buffer */ static char *xcp; /* current position */ static char *xep; /* current end */ static char *xbp; /* start of visible portion of input buffer */ static char *xlp; /* last char visible on screen */ static int x_adj_ok; /* * we use x_adj_done so that functions can tell * whether x_adjust() has been called while they are active. */ static int x_adj_done; static int xx_cols; static int x_col; static int x_displen; static int x_arg; /* general purpose arg */ static int x_arg_defaulted; /* x_arg not explicitly set; defaulted to 1 */ static int xlp_valid; static char **x_histp; /* history position */ static int x_nextcmd; /* for newline-and-next */ static char *xmp; /* mark pointer */ static unsigned char x_last_command; static unsigned char (*x_tab)[X_TABSZ]; /* key definition */ static char *(*x_atab)[X_TABSZ]; /* macro definitions */ static unsigned char x_bound[(X_TABSZ * X_NTABS + 7) / 8]; #define KILLSIZE 20 static char *killstack[KILLSIZE]; static int killsp, killtp; static int x_curprefix; static char *macroptr; #ifndef MKSH_NOVI static int cur_col; /* current column on line */ static int pwidth; /* width of prompt */ static int prompt_trunc; /* how much of prompt to truncate */ static int winwidth; /* width of window */ static char *wbuf[2]; /* window buffers */ static int wbuf_len; /* length of window buffers (x_cols - 3) */ static int win; /* window buffer in use */ static char morec; /* more character at right of window */ static int lastref; /* argument to last refresh() */ static int holdlen; /* length of holdbuf */ #endif static int prompt_redraw; /* 0 if newline forced after prompt */ static int x_ins(const char *); static void x_delete(int, int); static int x_bword(void); static int x_fword(int); static void x_goto(char *); static void x_bs3(char **); static int x_size_str(char *); static int x_size2(char *, char **); static void x_zots(char *); static void x_zotc2(int); static void x_zotc3(char **); static void x_load_hist(char **); static int x_search(char *, int, int); static int x_match(char *, char *); static void x_redraw(int); static void x_push(int); static char *x_mapin(const char *, Area *); static char *x_mapout(int); static void x_mapout2(int, char **); static void x_print(int, int); static void x_adjust(void); static void x_e_ungetc(int); static int x_e_getc(void); static void x_e_putc2(int); static void x_e_putc3(const char **); static void x_e_puts(const char *); static int x_fold_case(int); static char *x_lastcp(void); static void do_complete(int, Comp_type); static int unget_char = -1; static int x_do_ins(const char *, size_t); static void bind_if_not_bound(int, int, int); #define XFUNC_abort 0 #define XFUNC_beg_hist 1 #define XFUNC_cls 2 #define XFUNC_comp_comm 3 #define XFUNC_comp_file 4 #define XFUNC_complete 5 #define XFUNC_del_back 6 #define XFUNC_del_bword 7 #define XFUNC_del_char 8 #define XFUNC_del_fword 9 #define XFUNC_del_line 10 #define XFUNC_draw_line 11 #define XFUNC_end_hist 12 #define XFUNC_end_of_text 13 #define XFUNC_enumerate 14 #define XFUNC_eot_del 15 #define XFUNC_error 16 #define XFUNC_goto_hist 17 #define XFUNC_ins_string 18 #define XFUNC_insert 19 #define XFUNC_kill 20 #define XFUNC_kill_region 21 #define XFUNC_list_comm 22 #define XFUNC_list_file 23 #define XFUNC_literal 24 #define XFUNC_meta1 25 #define XFUNC_meta2 26 #define XFUNC_meta_yank 27 #define XFUNC_mv_back 28 #define XFUNC_mv_begin 29 #define XFUNC_mv_bword 30 #define XFUNC_mv_end 31 #define XFUNC_mv_forw 32 #define XFUNC_mv_fword 33 #define XFUNC_newline 34 #define XFUNC_next_com 35 #define XFUNC_nl_next_com 36 #define XFUNC_noop 37 #define XFUNC_prev_com 38 #define XFUNC_prev_histword 39 #define XFUNC_search_char_forw 40 #define XFUNC_search_char_back 41 #define XFUNC_search_hist 42 #define XFUNC_set_mark 43 #define XFUNC_transpose 44 #define XFUNC_xchg_point_mark 45 #define XFUNC_yank 46 #define XFUNC_comp_list 47 #define XFUNC_expand 48 #define XFUNC_fold_capitalise 49 #define XFUNC_fold_lower 50 #define XFUNC_fold_upper 51 #define XFUNC_set_arg 52 #define XFUNC_comment 53 #define XFUNC_version 54 #define XFUNC_edit_line 55 /* XFUNC_* must be < 128 */ static int x_abort(int); static int x_beg_hist(int); static int x_cls(int); static int x_comp_comm(int); static int x_comp_file(int); static int x_complete(int); static int x_del_back(int); static int x_del_bword(int); static int x_del_char(int); static int x_del_fword(int); static int x_del_line(int); static int x_draw_line(int); static int x_end_hist(int); static int x_end_of_text(int); static int x_enumerate(int); static int x_eot_del(int); static int x_error(int); static int x_goto_hist(int); static int x_ins_string(int); static int x_insert(int); static int x_kill(int); static int x_kill_region(int); static int x_list_comm(int); static int x_list_file(int); static int x_literal(int); static int x_meta1(int); static int x_meta2(int); static int x_meta_yank(int); static int x_mv_back(int); static int x_mv_begin(int); static int x_mv_bword(int); static int x_mv_end(int); static int x_mv_forw(int); static int x_mv_fword(int); static int x_newline(int); static int x_next_com(int); static int x_nl_next_com(int); static int x_noop(int); static int x_prev_com(int); static int x_prev_histword(int); static int x_search_char_forw(int); static int x_search_char_back(int); static int x_search_hist(int); static int x_set_mark(int); static int x_transpose(int); static int x_xchg_point_mark(int); static int x_yank(int); static int x_comp_list(int); static int x_expand(int); static int x_fold_capitalise(int); static int x_fold_lower(int); static int x_fold_upper(int); static int x_set_arg(int); static int x_comment(int); static int x_version(int); static int x_edit_line(int); static const struct x_ftab x_ftab[] = { { x_abort, "abort", 0 }, { x_beg_hist, "beginning-of-history", 0 }, { x_cls, "clear-screen", 0 }, { x_comp_comm, "complete-command", 0 }, { x_comp_file, "complete-file", 0 }, { x_complete, "complete", 0 }, { x_del_back, "delete-char-backward", XF_ARG }, { x_del_bword, "delete-word-backward", XF_ARG }, { x_del_char, "delete-char-forward", XF_ARG }, { x_del_fword, "delete-word-forward", XF_ARG }, { x_del_line, "kill-line", 0 }, { x_draw_line, "redraw", 0 }, { x_end_hist, "end-of-history", 0 }, { x_end_of_text, "eot", 0 }, { x_enumerate, "list", 0 }, { x_eot_del, "eot-or-delete", XF_ARG }, { x_error, "error", 0 }, { x_goto_hist, "goto-history", XF_ARG }, { x_ins_string, "macro-string", XF_NOBIND }, { x_insert, "auto-insert", XF_ARG }, { x_kill, "kill-to-eol", XF_ARG }, { x_kill_region, "kill-region", 0 }, { x_list_comm, "list-command", 0 }, { x_list_file, "list-file", 0 }, { x_literal, "quote", 0 }, { x_meta1, "prefix-1", XF_PREFIX }, { x_meta2, "prefix-2", XF_PREFIX }, { x_meta_yank, "yank-pop", 0 }, { x_mv_back, "backward-char", XF_ARG }, { x_mv_begin, "beginning-of-line", 0 }, { x_mv_bword, "backward-word", XF_ARG }, { x_mv_end, "end-of-line", 0 }, { x_mv_forw, "forward-char", XF_ARG }, { x_mv_fword, "forward-word", XF_ARG }, { x_newline, "newline", 0 }, { x_next_com, "down-history", XF_ARG }, { x_nl_next_com, "newline-and-next", 0 }, { x_noop, "no-op", 0 }, { x_prev_com, "up-history", XF_ARG }, { x_prev_histword, "prev-hist-word", XF_ARG }, { x_search_char_forw, "search-character-forward", XF_ARG }, { x_search_char_back, "search-character-backward", XF_ARG }, { x_search_hist, "search-history", 0 }, { x_set_mark, "set-mark-command", 0 }, { x_transpose, "transpose-chars", 0 }, { x_xchg_point_mark, "exchange-point-and-mark", 0 }, { x_yank, "yank", 0 }, { x_comp_list, "complete-list", 0 }, { x_expand, "expand-file", 0 }, { x_fold_capitalise, "capitalize-word", XF_ARG }, { x_fold_lower, "downcase-word", XF_ARG }, { x_fold_upper, "upcase-word", XF_ARG }, { x_set_arg, "set-arg", XF_NOBIND }, { x_comment, "comment", 0 }, { x_version, "version", 0 }, { x_edit_line, "edit-line", XF_ARG }, { 0, NULL, 0 } }; static struct x_defbindings const x_defbindings[] = { { XFUNC_del_back, 0, MKCTRL('?') }, { XFUNC_del_bword, 1, MKCTRL('?') }, { XFUNC_eot_del, 0, MKCTRL('D') }, { XFUNC_del_back, 0, MKCTRL('H') }, { XFUNC_del_bword, 1, MKCTRL('H') }, { XFUNC_del_bword, 1, 'h' }, { XFUNC_mv_bword, 1, 'b' }, { XFUNC_mv_fword, 1, 'f' }, { XFUNC_del_fword, 1, 'd' }, { XFUNC_mv_back, 0, MKCTRL('B') }, { XFUNC_mv_forw, 0, MKCTRL('F') }, { XFUNC_search_char_forw, 0, MKCTRL(']') }, { XFUNC_search_char_back, 1, MKCTRL(']') }, { XFUNC_newline, 0, MKCTRL('M') }, { XFUNC_newline, 0, MKCTRL('J') }, { XFUNC_end_of_text, 0, MKCTRL('_') }, { XFUNC_abort, 0, MKCTRL('G') }, { XFUNC_prev_com, 0, MKCTRL('P') }, { XFUNC_next_com, 0, MKCTRL('N') }, { XFUNC_nl_next_com, 0, MKCTRL('O') }, { XFUNC_search_hist, 0, MKCTRL('R') }, { XFUNC_beg_hist, 1, '<' }, { XFUNC_end_hist, 1, '>' }, { XFUNC_goto_hist, 1, 'g' }, { XFUNC_mv_end, 0, MKCTRL('E') }, { XFUNC_mv_begin, 0, MKCTRL('A') }, { XFUNC_draw_line, 0, MKCTRL('L') }, { XFUNC_cls, 1, MKCTRL('L') }, { XFUNC_meta1, 0, MKCTRL('[') }, { XFUNC_meta2, 0, MKCTRL('X') }, { XFUNC_kill, 0, MKCTRL('K') }, { XFUNC_yank, 0, MKCTRL('Y') }, { XFUNC_meta_yank, 1, 'y' }, { XFUNC_literal, 0, MKCTRL('^') }, { XFUNC_comment, 1, '#' }, { XFUNC_transpose, 0, MKCTRL('T') }, { XFUNC_complete, 1, MKCTRL('[') }, { XFUNC_comp_list, 0, MKCTRL('I') }, { XFUNC_comp_list, 1, '=' }, { XFUNC_enumerate, 1, '?' }, { XFUNC_expand, 1, '*' }, { XFUNC_comp_file, 1, MKCTRL('X') }, { XFUNC_comp_comm, 2, MKCTRL('[') }, { XFUNC_list_comm, 2, '?' }, { XFUNC_list_file, 2, MKCTRL('Y') }, { XFUNC_set_mark, 1, ' ' }, { XFUNC_kill_region, 0, MKCTRL('W') }, { XFUNC_xchg_point_mark, 2, MKCTRL('X') }, { XFUNC_literal, 0, MKCTRL('V') }, { XFUNC_version, 1, MKCTRL('V') }, { XFUNC_prev_histword, 1, '.' }, { XFUNC_prev_histword, 1, '_' }, { XFUNC_set_arg, 1, '0' }, { XFUNC_set_arg, 1, '1' }, { XFUNC_set_arg, 1, '2' }, { XFUNC_set_arg, 1, '3' }, { XFUNC_set_arg, 1, '4' }, { XFUNC_set_arg, 1, '5' }, { XFUNC_set_arg, 1, '6' }, { XFUNC_set_arg, 1, '7' }, { XFUNC_set_arg, 1, '8' }, { XFUNC_set_arg, 1, '9' }, { XFUNC_fold_upper, 1, 'U' }, { XFUNC_fold_upper, 1, 'u' }, { XFUNC_fold_lower, 1, 'L' }, { XFUNC_fold_lower, 1, 'l' }, { XFUNC_fold_capitalise, 1, 'C' }, { XFUNC_fold_capitalise, 1, 'c' }, /* These for ansi arrow keys: arguablely shouldn't be here by * default, but its simpler/faster/smaller than using termcap * entries. */ { XFUNC_meta2, 1, '[' }, { XFUNC_meta2, 1, 'O' }, { XFUNC_prev_com, 2, 'A' }, { XFUNC_next_com, 2, 'B' }, { XFUNC_mv_forw, 2, 'C' }, { XFUNC_mv_back, 2, 'D' }, { XFUNC_mv_begin | 0x80, 2, '1' }, { XFUNC_mv_begin | 0x80, 2, '7' }, { XFUNC_mv_begin, 2, 'H' }, { XFUNC_mv_end | 0x80, 2, '4' }, { XFUNC_mv_end | 0x80, 2, '8' }, { XFUNC_mv_end, 2, 'F' }, { XFUNC_del_char | 0x80, 2, '3' }, /* more non-standard ones */ { XFUNC_edit_line, 2, 'e' } }; #ifdef MKSH_SMALL static void x_modified(void); static void x_modified(void) { if (!modified) { x_histp = histptr + 1; modified = 1; } } #else #define x_modified() do { \ if (!modified) { \ x_histp = histptr + 1; \ modified = 1; \ } \ } while (/* CONSTCOND */ 0) #endif static int x_e_getmbc(char *sbuf) { int c, pos = 0; unsigned char *buf = (unsigned char *)sbuf; memset(buf, 0, 4); buf[pos++] = c = x_e_getc(); if (c == -1) return (-1); if (UTFMODE) { if ((buf[0] >= 0xC2) && (buf[0] < 0xF0)) { c = x_e_getc(); if (c == -1) return (-1); if ((c & 0xC0) != 0x80) { x_e_ungetc(c); return (1); } buf[pos++] = c; } if ((buf[0] >= 0xE0) && (buf[0] < 0xF0)) { /* XXX x_e_ungetc is one-octet only */ buf[pos++] = c = x_e_getc(); if (c == -1) return (-1); } } return (pos); } static void x_init_prompt(void) { x_col = promptlen(prompt); x_adj_ok = 1; prompt_redraw = 1; if (x_col > xx_cols) x_col %= xx_cols; x_displen = xx_cols - 2 - x_col; x_adj_done = 0; pprompt(prompt, 0); if (x_displen < 1) { x_col = 0; x_displen = xx_cols - 2; x_e_putc2('\n'); prompt_redraw = 0; } } static int x_emacs(char *buf, size_t len) { int c, i; unsigned char f; xbp = xbuf = buf; xend = buf + len; xlp = xcp = xep = buf; *xcp = 0; xlp_valid = true; xmp = NULL; x_curprefix = 0; macroptr = NULL; x_histp = histptr + 1; x_last_command = XFUNC_error; xx_cols = x_cols; x_init_prompt(); if (x_nextcmd >= 0) { int off = source->line - x_nextcmd; if (histptr - history >= off) x_load_hist(histptr - off); x_nextcmd = -1; } while (1) { x_flush(); if ((c = x_e_getc()) < 0) return 0; f = x_curprefix == -1 ? XFUNC_insert : x_tab[x_curprefix][c]; if (f & 0x80) { f &= 0x7F; if ((i = x_e_getc()) != '~') x_e_ungetc(i); } if (!(x_ftab[f].xf_flags & XF_PREFIX) && x_last_command != XFUNC_set_arg) { x_arg = 1; x_arg_defaulted = 1; } i = c | (x_curprefix << 8); x_curprefix = 0; switch ((*x_ftab[f].xf_func)(i)) { case KSTD: if (!(x_ftab[f].xf_flags & XF_PREFIX)) x_last_command = f; break; case KEOL: i = xep - xbuf; return i; case KINTR: /* special case for interrupt */ trapsig(SIGINT); x_mode(false); unwind(LSHELL); } /* ad-hoc hack for fixing the cursor position */ x_goto(xcp); } } static int x_insert(int c) { static int left = 0, pos, save_arg; static char str[4]; /* * Should allow tab and control chars. */ if (c == 0) { invmbs: left = 0; x_e_putc2(7); return KSTD; } if (UTFMODE) { if (((c & 0xC0) == 0x80) && left) { str[pos++] = c; if (!--left) { str[pos] = '\0'; x_arg = save_arg; while (x_arg--) x_ins(str); } return (KSTD); } if (left) { if (x_curprefix == -1) { /* flush invalid multibyte */ str[pos] = '\0'; while (save_arg--) x_ins(str); } } if ((c >= 0xC2) && (c < 0xE0)) left = 1; else if ((c >= 0xE0) && (c < 0xF0)) left = 2; else if (c > 0x7F) goto invmbs; else left = 0; if (left) { save_arg = x_arg; pos = 1; str[0] = c; return (KSTD); } } left = 0; str[0] = c; str[1] = '\0'; while (x_arg--) x_ins(str); return KSTD; } static int x_ins_string(int c) { if (macroptr) { x_e_putc2(7); return KSTD; } macroptr = x_atab[c >> 8][c & 255]; if (macroptr && !*macroptr) { /* XXX bell? */ macroptr = NULL; } return KSTD; } static int x_do_ins(const char *cp, size_t len) { if (xep + len >= xend) { x_e_putc2(7); return -1; } memmove(xcp + len, xcp, xep - xcp + 1); memmove(xcp, cp, len); xcp += len; xep += len; x_modified(); return 0; } static int x_ins(const char *s) { char *cp = xcp; int adj = x_adj_done; if (x_do_ins(s, strlen(s)) < 0) return -1; /* * x_zots() may result in a call to x_adjust() * we want xcp to reflect the new position. */ xlp_valid = false; x_lastcp(); x_adj_ok = (xcp >= xlp); x_zots(cp); if (adj == x_adj_done) { /* has x_adjust() been called? */ /* no */ cp = xlp; while (cp > xcp) x_bs3(&cp); } if (xlp == xep - 1) x_redraw(xx_cols); x_adj_ok = 1; return 0; } static int x_del_back(int c __unused) { int i = 0; if (xcp == xbuf) { x_e_putc2(7); return (KSTD); } do { x_goto(xcp - 1); } while ((++i < x_arg) && (xcp != xbuf)); x_delete(i, false); return KSTD; } static int x_del_char(int c __unused) { char *cp, *cp2; int i = 0; cp = xcp; while (i < x_arg) { utf_ptradjx(cp, cp2); if (cp2 > xep) break; cp = cp2; i++; } if (!i) { x_e_putc2(7); return KSTD; } x_delete(i, false); return KSTD; } /* Delete nc chars to the right of the cursor (including cursor position) */ static void x_delete(int nc, int push) { int i, nb, nw; char *cp; if (nc == 0) return; nw = 0; cp = xcp; for (i = 0; i < nc; ++i) { char *cp2; int j; j = x_size2(cp, &cp2); if (cp2 > xep) break; cp = cp2; nw += j; } nb = cp - xcp; /* nc = i; */ if (xmp != NULL && xmp > xcp) { if (xcp + nb > xmp) xmp = xcp; else xmp -= nb; } /* * This lets us yank a word we have deleted. */ if (push) x_push(nb); xep -= nb; memmove(xcp, xcp + nb, xep - xcp + 1); /* Copies the NUL */ x_adj_ok = 0; /* don't redraw */ xlp_valid = false; x_zots(xcp); /* * if we are already filling the line, * there is no need to ' ','\b'. * But if we must, make sure we do the minimum. */ if ((i = xx_cols - 2 - x_col) > 0 || xep - xlp == 0) { nw = i = (nw < i) ? nw : i; while (i--) x_e_putc2(' '); if (x_col == xx_cols - 2) { x_e_putc2((xep > xlp) ? '>' : (xbp > xbuf) ? '<' : ' '); ++nw; } while (nw--) x_e_putc2('\b'); } /*x_goto(xcp);*/ x_adj_ok = 1; xlp_valid = false; cp = x_lastcp(); while (cp > xcp) x_bs3(&cp); x_modified(); return; } static int x_del_bword(int c __unused) { x_delete(x_bword(), true); return KSTD; } static int x_mv_bword(int c __unused) { x_bword(); return KSTD; } static int x_mv_fword(int c __unused) { x_fword(1); return KSTD; } static int x_del_fword(int c __unused) { x_delete(x_fword(0), true); return KSTD; } static int x_bword(void) { int nc = 0, nb = 0; char *cp = xcp; if (cp == xbuf) { x_e_putc2(7); return 0; } while (x_arg--) { while (cp != xbuf && is_mfs(cp[-1])) { cp--; nb++; } while (cp != xbuf && !is_mfs(cp[-1])) { cp--; nb++; } } x_goto(cp); for (cp = xcp; cp < (xcp + nb); ++nc) utf_ptradjx(cp, cp); return nc; } static int x_fword(int move) { int nc = 0; char *cp = xcp, *cp2; if (cp == xep) { x_e_putc2(7); return 0; } while (x_arg--) { while (cp != xep && is_mfs(*cp)) cp++; while (cp != xep && !is_mfs(*cp)) cp++; } for (cp2 = xcp; cp2 < cp; ++nc) utf_ptradjx(cp2, cp2); if (move) x_goto(cp); return nc; } static void x_goto(char *cp) { if (UTFMODE) while ((cp > xbuf) && ((*cp & 0xC0) == 0x80)) --cp; if (cp < xbp || cp >= utf_skipcols(xbp, x_displen)) { /* we are heading off screen */ xcp = cp; x_adjust(); } else if (cp < xcp) { /* move back */ while (cp < xcp) x_bs3(&xcp); } else if (cp > xcp) { /* move forward */ while (cp > xcp) x_zotc3(&xcp); } } static void x_bs3(char **p) { int i; (*p)--; if (UTFMODE) while (((unsigned char)**p & 0xC0) == 0x80) (*p)--; i = x_size2(*p, NULL); while (i--) x_e_putc2('\b'); } static int x_size_str(char *cp) { int size = 0; while (*cp) size += x_size2(cp, &cp); return size; } static int x_size2(char *cp, char **dcp) { int c = *(unsigned char *)cp; if (UTFMODE && (c > 0x7F)) return (utf_widthadj(cp, (const char **)dcp)); if (dcp) *dcp = cp + 1; if (c == '\t') return 4; /* Kludge, tabs are always four spaces. */ if (c < ' ' || c == 0x7f) return 2; /* control unsigned char */ return 1; } static void x_zots(char *str) { int adj = x_adj_done; x_lastcp(); while (*str && str < xlp && adj == x_adj_done) x_zotc3(&str); } static void x_zotc2(int c) { if (c == '\t') { /* Kludge, tabs are always four spaces. */ x_e_puts(" "); } else if (c < ' ' || c == 0x7f) { x_e_putc2('^'); x_e_putc2(UNCTRL(c)); } else x_e_putc2(c); } static void x_zotc3(char **cp) { unsigned char c = **(unsigned char **)cp; if (c == 0xC2 && UTFMODE) { unsigned char c2 = ((unsigned char *)*cp)[1]; if (c2 >= 0x80 && c2 < 0xA0) { c = c2; (*cp)++; } } if (c == '\t') { /* Kludge, tabs are always four spaces. */ x_e_puts(" "); (*cp)++; } else if (c < ' ' || (c >= 0x7F && c < 0xA0)) { x_e_putc2('^'); x_e_putc2(UNCTRL(c)); (*cp)++; } else x_e_putc3((const char **)cp); } static int x_mv_back(int c __unused) { if (xcp == xbuf) { x_e_putc2(7); return KSTD; } while (x_arg--) { x_goto(xcp - 1); if (xcp == xbuf) break; } return KSTD; } static int x_mv_forw(int c __unused) { char *cp = xcp, *cp2; if (xcp == xep) { x_e_putc2(7); return KSTD; } while (x_arg--) { utf_ptradjx(cp, cp2); if (cp2 > xep) break; cp = cp2; } x_goto(cp); return KSTD; } static int x_search_char_forw(int c __unused) { char *cp = xcp; char tmp[4]; *xep = '\0'; if (x_e_getmbc(tmp) < 0) { x_e_putc2(7); return KSTD; } while (x_arg--) { if ((cp = (cp == xep) ? NULL : strstr(cp + 1, tmp)) == NULL && (cp = strstr(xbuf, tmp)) == NULL) { x_e_putc2(7); return KSTD; } } x_goto(cp); return KSTD; } static int x_search_char_back(int c __unused) { char *cp = xcp, *p, tmp[4]; bool b; if (x_e_getmbc(tmp) < 0) { x_e_putc2(7); return KSTD; } for (; x_arg--; cp = p) for (p = cp; ; ) { if (p-- == xbuf) p = xep; if (p == cp) { x_e_putc2(7); return KSTD; } if ((tmp[1] && ((p+1) > xep)) || (tmp[2] && ((p+2) > xep))) continue; b = true; if (*p != tmp[0]) b = false; if (b && tmp[1] && p[1] != tmp[1]) b = false; if (b && tmp[2] && p[2] != tmp[2]) b = false; if (b) break; } x_goto(cp); return KSTD; } static int x_newline(int c __unused) { x_e_putc2('\r'); x_e_putc2('\n'); x_flush(); *xep++ = '\n'; return KEOL; } static int x_end_of_text(int c __unused) { x_zotc2(edchars.eof); x_putc('\r'); x_putc('\n'); x_flush(); return KEOL; } static int x_beg_hist(int c __unused) { x_load_hist(history); return KSTD; } static int x_end_hist(int c __unused) { x_load_hist(histptr); return KSTD; } static int x_prev_com(int c __unused) { x_load_hist(x_histp - x_arg); return KSTD; } static int x_next_com(int c __unused) { x_load_hist(x_histp + x_arg); return KSTD; } /* Goto a particular history number obtained from argument. * If no argument is given history 1 is probably not what you * want so we'll simply go to the oldest one. */ static int x_goto_hist(int c __unused) { if (x_arg_defaulted) x_load_hist(history); else x_load_hist(histptr + x_arg - source->line); return KSTD; } static void x_load_hist(char **hp) { int oldsize; char *sp = NULL; if (hp == histptr + 1) { sp = holdbuf; modified = 0; } else if (hp < history || hp > histptr) { x_e_putc2(7); return; } if (sp == NULL) sp = *hp; x_histp = hp; oldsize = x_size_str(xbuf); if (modified) strlcpy(holdbuf, xbuf, sizeof (holdbuf)); strlcpy(xbuf, sp, xend - xbuf); xbp = xbuf; xep = xcp = xbuf + strlen(xbuf); xlp_valid = false; if (xep <= x_lastcp()) { x_redraw(oldsize); } x_goto(xep); modified = 0; } static int x_nl_next_com(int c __unused) { x_nextcmd = source->line - (histptr - x_histp) + 1; return (x_newline('\n')); } static int x_eot_del(int c) { if (xep == xbuf && x_arg_defaulted) return (x_end_of_text(c)); else return (x_del_char(c)); } /* reverse incremental history search */ static int x_search_hist(int c) { int offset = -1; /* offset of match in xbuf, else -1 */ char pat[256 + 1]; /* pattern buffer */ char *p = pat; unsigned char f; *p = '\0'; while (1) { if (offset < 0) { x_e_puts("\nI-search: "); x_e_puts(pat); } x_flush(); if ((c = x_e_getc()) < 0) return KSTD; f = x_tab[0][c]; if (c == MKCTRL('[')) { if ((f & 0x7F) == XFUNC_meta1) { if ((c = x_e_getc()) < 0) return KSTD; f = x_tab[1][c] & 0x7F; if (f == XFUNC_meta1 || f == XFUNC_meta2) x_meta1(MKCTRL('[')); x_e_ungetc(c); } break; } if (f & 0x80) { f &= 0x7F; if ((c = x_e_getc()) != '~') x_e_ungetc(c); } if (f == XFUNC_search_hist) offset = x_search(pat, 0, offset); else if (f == XFUNC_del_back) { if (p == pat) { offset = -1; break; } if (p > pat) *--p = '\0'; if (p == pat) offset = -1; else offset = x_search(pat, 1, offset); continue; } else if (f == XFUNC_insert) { /* add char to pattern */ /* overflow check... */ if (p >= &pat[sizeof(pat) - 1]) { x_e_putc2(7); continue; } *p++ = c, *p = '\0'; if (offset >= 0) { /* already have partial match */ offset = x_match(xbuf, pat); if (offset >= 0) { x_goto(xbuf + offset + (p - pat) - (*pat == '^')); continue; } } offset = x_search(pat, 0, offset); } else if (f == XFUNC_abort) { if (offset >= 0) x_load_hist(histptr + 1); break; } else { /* other command */ x_e_ungetc(c); break; } } if (offset < 0) x_redraw(-1); return KSTD; } /* search backward from current line */ static int x_search(char *pat, int sameline, int offset) { char **hp; int i; for (hp = x_histp - (sameline ? 0 : 1); hp >= history; --hp) { i = x_match(*hp, pat); if (i >= 0) { if (offset < 0) x_e_putc2('\n'); x_load_hist(hp); x_goto(xbuf + i + strlen(pat) - (*pat == '^')); return i; } } x_e_putc2(7); x_histp = histptr; return -1; } /* return position of first match of pattern in string, else -1 */ static int x_match(char *str, char *pat) { if (*pat == '^') { return (strncmp(str, pat + 1, strlen(pat + 1)) == 0) ? 0 : -1; } else { char *q = strstr(str, pat); return (q == NULL) ? -1 : q - str; } } static int x_del_line(int c __unused) { int i, j; *xep = 0; i = xep - xbuf; j = x_size_str(xbuf); xcp = xbuf; x_push(i); xlp = xbp = xep = xbuf; xlp_valid = true; *xcp = 0; xmp = NULL; x_redraw(j); x_modified(); return KSTD; } static int x_mv_end(int c __unused) { x_goto(xep); return KSTD; } static int x_mv_begin(int c __unused) { x_goto(xbuf); return KSTD; } static int x_draw_line(int c __unused) { x_redraw(-1); return KSTD; } static int x_cls(int c __unused) { /* in later versions we might use libtermcap for this */ #ifndef MKSH_CLS_STRING #define MKSH_CLS_STRING "\033[;H\033[J" #endif shf_fprintf(shl_out, MKSH_CLS_STRING); x_putc('\r'); x_init_prompt(); x_redraw(0); return (KSTD); } /* Redraw (part of) the line. If limit is < 0, the everything is redrawn * on a NEW line, otherwise limit is the screen column up to which needs * redrawing. */ static void x_redraw(int limit) { int i, j, x_trunc = 0; char *cp; x_adj_ok = 0; if (limit == -1) x_e_putc2('\n'); else x_e_putc2('\r'); x_flush(); if (xbp == xbuf) { x_col = promptlen(prompt); if (x_col > xx_cols) x_trunc = (x_col / xx_cols) * xx_cols; if (prompt_redraw) pprompt(prompt, x_trunc); } if (x_col > xx_cols) x_col %= xx_cols; x_displen = xx_cols - 2 - x_col; if (x_displen < 1) { x_col = 0; x_displen = xx_cols - 2; } xlp_valid = false; x_lastcp(); x_zots(xbp); if (xbp != xbuf || xep > xlp) limit = xx_cols; if (limit >= 0) { if (xep > xlp) i = 0; /* we fill the line */ else { char *cpl = xbp; i = limit; while (cpl < xlp) i -= x_size2(cpl, &cpl); } j = 0; while ((j < i) || (x_col < (xx_cols - 2))) { if (!(x_col < (xx_cols - 2))) break; x_e_putc2(' '); j++; } i = ' '; if (xep > xlp) { /* more off screen */ if (xbp > xbuf) i = '*'; else i = '>'; } else if (xbp > xbuf) i = '<'; x_e_putc2(i); j++; while (j--) x_e_putc2('\b'); } cp = xlp; while (cp > xcp) x_bs3(&cp); x_adj_ok = 1; return; } static int x_transpose(int c __unused) { unsigned int tmpa, tmpb; /* What transpose is meant to do seems to be up for debate. This * is a general summary of the options; the text is abcd with the * upper case character or underscore indicating the cursor position: * Who Before After Before After * at&t ksh in emacs mode: abCd abdC abcd_ (bell) * at&t ksh in gmacs mode: abCd baCd abcd_ abdc_ * gnu emacs: abCd acbD abcd_ abdc_ * Pdksh currently goes with GNU behavior since I believe this is the * most common version of emacs, unless in gmacs mode, in which case * it does the at&t ksh gmacs mode. * This should really be broken up into 3 functions so users can bind * to the one they want. */ if (xcp == xbuf) { x_e_putc2(7); return KSTD; } else if (xcp == xep || Flag(FGMACS)) { if (xcp - xbuf == 1) { x_e_putc2(7); return KSTD; } /* Gosling/Unipress emacs style: Swap two characters before the * cursor, do not change cursor position */ x_bs3(&xcp); if (utf_mbtowc(&tmpa, xcp) == (size_t)-1) { x_e_putc2(7); return KSTD; } x_bs3(&xcp); if (utf_mbtowc(&tmpb, xcp) == (size_t)-1) { x_e_putc2(7); return KSTD; } utf_wctomb(xcp, tmpa); x_zotc3(&xcp); utf_wctomb(xcp, tmpb); x_zotc3(&xcp); } else { /* GNU emacs style: Swap the characters before and under the * cursor, move cursor position along one. */ if (utf_mbtowc(&tmpa, xcp) == (size_t)-1) { x_e_putc2(7); return KSTD; } x_bs3(&xcp); if (utf_mbtowc(&tmpb, xcp) == (size_t)-1) { x_e_putc2(7); return KSTD; } utf_wctomb(xcp, tmpa); x_zotc3(&xcp); utf_wctomb(xcp, tmpb); x_zotc3(&xcp); } x_modified(); return KSTD; } static int x_literal(int c __unused) { x_curprefix = -1; return KSTD; } static int x_meta1(int c __unused) { x_curprefix = 1; return KSTD; } static int x_meta2(int c __unused) { x_curprefix = 2; return KSTD; } static int x_kill(int c __unused) { int col = xcp - xbuf; int lastcol = xep - xbuf; int ndel; if (x_arg_defaulted) x_arg = lastcol; else if (x_arg > lastcol) x_arg = lastcol; ndel = x_arg - col; if (ndel < 0) { x_goto(xbuf + x_arg); ndel = -ndel; } x_delete(ndel, true); return KSTD; } static void x_push(int nchars) { char *cp; strndupx(cp, xcp, nchars, AEDIT); if (killstack[killsp]) afree(killstack[killsp], AEDIT); killstack[killsp] = cp; killsp = (killsp + 1) % KILLSIZE; } static int x_yank(int c __unused) { if (killsp == 0) killtp = KILLSIZE; else killtp = killsp; killtp--; if (killstack[killtp] == 0) { x_e_puts("\nnothing to yank"); x_redraw(-1); return KSTD; } xmp = xcp; x_ins(killstack[killtp]); return KSTD; } static int x_meta_yank(int c __unused) { int len; if ((x_last_command != XFUNC_yank && x_last_command != XFUNC_meta_yank) || killstack[killtp] == 0) { killtp = killsp; x_e_puts("\nyank something first"); x_redraw(-1); return KSTD; } len = strlen(killstack[killtp]); x_goto(xcp - len); x_delete(len, false); do { if (killtp == 0) killtp = KILLSIZE - 1; else killtp--; } while (killstack[killtp] == 0); x_ins(killstack[killtp]); return KSTD; } static int x_abort(int c __unused) { /* x_zotc(c); */ xlp = xep = xcp = xbp = xbuf; xlp_valid = true; *xcp = 0; x_modified(); return KINTR; } static int x_error(int c __unused) { x_e_putc2(7); return KSTD; } static char * x_mapin(const char *cp, Area *ap) { char *new, *op; strdupx(new, cp, ap); op = new; while (*cp) { /* XXX -- should handle \^ escape? */ if (*cp == '^') { cp++; if (*cp >= '?') /* includes '?'; ASCII */ *op++ = MKCTRL(*cp); else { *op++ = '^'; cp--; } } else *op++ = *cp; cp++; } *op = '\0'; return new; } static void x_mapout2(int c, char **buf) { char *p = *buf; if (c < ' ' || c == 0x7f) { *p++ = '^'; *p++ = UNCTRL(c); } else *p++ = c; *p = 0; *buf = p; } static char * x_mapout(int c) { static char buf[8]; char *bp = buf; x_mapout2(c, &bp); return (buf); } static void x_print(int prefix, int key) { int f = x_tab[prefix][key]; if (prefix) /* prefix == 1 || prefix == 2 */ shf_puts(x_mapout(prefix == 1 ? MKCTRL('[') : MKCTRL('X')), shl_stdout); shprintf("%s%s = ", x_mapout(key), (f & 0x80) ? "~" : ""); if ((f & 0x7F) != XFUNC_ins_string) shprintf("%s\n", x_ftab[f & 0x7F].xf_name); else shprintf("'%s'\n", x_atab[prefix][key]); } int x_bind(const char *a1, const char *a2, int macro, /* bind -m */ int list) /* bind -l */ { unsigned char f; int prefix, key; char *sp = NULL, *m1, *m2; bool hastilde; if (x_tab == NULL) { bi_errorf("cannot bind, not a tty"); return (1); } /* List function names */ if (list) { for (f = 0; f < NELEM(x_ftab); f++) if (x_ftab[f].xf_name && !(x_ftab[f].xf_flags & XF_NOBIND)) shprintf("%s\n", x_ftab[f].xf_name); return (0); } if (a1 == NULL) { for (prefix = 0; prefix < X_NTABS; prefix++) for (key = 0; key < X_TABSZ; key++) { f = x_tab[prefix][key] & 0x7F; if (f == XFUNC_insert || f == XFUNC_error || (macro && f != XFUNC_ins_string)) continue; x_print(prefix, key); } return (0); } m2 = m1 = x_mapin(a1, ATEMP); prefix = key = 0; for (;; m1++) { key = (unsigned char)*m1; f = x_tab[prefix][key] & 0x7F; if (f == XFUNC_meta1) prefix = 1; else if (f == XFUNC_meta2) prefix = 2; else break; } if (*++m1 && ((*m1 != '~') || *(m1+1))) { char msg[256] = "key sequence '"; const char *c = a1; m1 = msg + strlen(msg); while (*c && m1 < (msg + sizeof (msg) - 3)) x_mapout2(*c++, &m1); bi_errorf("%s' too long", msg); return (1); } hastilde = *m1; afree(m2, ATEMP); if (a2 == NULL) { x_print(prefix, key); return (0); } if (*a2 == 0) f = XFUNC_insert; else if (!macro) { for (f = 0; f < NELEM(x_ftab); f++) if (x_ftab[f].xf_name && strcmp(x_ftab[f].xf_name, a2) == 0) break; if (f == NELEM(x_ftab) || x_ftab[f].xf_flags & XF_NOBIND) { bi_errorf("%s: no such function", a2); return (1); } } else { f = XFUNC_ins_string; sp = x_mapin(a2, AEDIT); } if ((x_tab[prefix][key] & 0x7F) == XFUNC_ins_string && x_atab[prefix][key]) afree(x_atab[prefix][key], AEDIT); x_tab[prefix][key] = f | (hastilde ? 0x80 : 0); x_atab[prefix][key] = sp; /* Track what the user has bound so x_mode(true) won't toast things */ if (f == XFUNC_insert) x_bound[(prefix * X_TABSZ + key) / 8] &= ~(1 << ((prefix * X_TABSZ + key) % 8)); else x_bound[(prefix * X_TABSZ + key) / 8] |= (1 << ((prefix * X_TABSZ + key) % 8)); return (0); } static void x_init_emacs(void) { int i, j; ainit(AEDIT); x_nextcmd = -1; x_tab = alloc(X_NTABS * sizeof (*x_tab), AEDIT); for (j = 0; j < X_TABSZ; j++) x_tab[0][j] = XFUNC_insert; for (i = 1; i < X_NTABS; i++) for (j = 0; j < X_TABSZ; j++) x_tab[i][j] = XFUNC_error; for (i = 0; i < (int)NELEM(x_defbindings); i++) x_tab[x_defbindings[i].xdb_tab][x_defbindings[i].xdb_char] = x_defbindings[i].xdb_func; x_atab = alloc(X_NTABS * sizeof (*x_atab), AEDIT); for (i = 1; i < X_NTABS; i++) for (j = 0; j < X_TABSZ; j++) x_atab[i][j] = NULL; } static void bind_if_not_bound(int p, int k, int func) { /* Has user already bound this key? If so, don't override it */ if (x_bound[((p) * X_TABSZ + (k)) / 8] & (1 << (((p) * X_TABSZ + (k)) % 8))) return; x_tab[p][k] = func; } static int x_set_mark(int c __unused) { xmp = xcp; return KSTD; } static int x_kill_region(int c __unused) { int rsize; char *xr; if (xmp == NULL) { x_e_putc2(7); return KSTD; } if (xmp > xcp) { rsize = xmp - xcp; xr = xcp; } else { rsize = xcp - xmp; xr = xmp; } x_goto(xr); x_delete(rsize, true); xmp = xr; return KSTD; } static int x_xchg_point_mark(int c __unused) { char *tmp; if (xmp == NULL) { x_e_putc2(7); return KSTD; } tmp = xmp; xmp = xcp; x_goto(tmp); return KSTD; } static int x_noop(int c __unused) { return KSTD; } /* * File/command name completion routines */ static int x_comp_comm(int c __unused) { do_complete(XCF_COMMAND, CT_COMPLETE); return KSTD; } static int x_list_comm(int c __unused) { do_complete(XCF_COMMAND, CT_LIST); return KSTD; } static int x_complete(int c __unused) { do_complete(XCF_COMMAND_FILE, CT_COMPLETE); return KSTD; } static int x_enumerate(int c __unused) { do_complete(XCF_COMMAND_FILE, CT_LIST); return KSTD; } static int x_comp_file(int c __unused) { do_complete(XCF_FILE, CT_COMPLETE); return KSTD; } static int x_list_file(int c __unused) { do_complete(XCF_FILE, CT_LIST); return KSTD; } static int x_comp_list(int c __unused) { do_complete(XCF_COMMAND_FILE, CT_COMPLIST); return KSTD; } static int x_expand(int c __unused) { char **words; int start, end, nwords, i; bool is_command; nwords = x_cf_glob(XCF_FILE, xbuf, xep - xbuf, xcp - xbuf, &start, &end, &words, &is_command); if (nwords == 0) { x_e_putc2(7); return KSTD; } x_goto(xbuf + start); x_delete(end - start, false); for (i = 0; i < nwords;) { if (x_escape(words[i], strlen(words[i]), x_do_ins) < 0 || (++i < nwords && x_ins(" ") < 0)) { x_e_putc2(7); return KSTD; } } x_adjust(); return KSTD; } /* type == 0 for list, 1 for complete and 2 for complete-list */ static void do_complete(int flags, /* XCF_{COMMAND,FILE,COMMAND_FILE} */ Comp_type type) { char **words; int start, end, nlen, olen, nwords; bool is_command, completed = false; nwords = x_cf_glob(flags, xbuf, xep - xbuf, xcp - xbuf, &start, &end, &words, &is_command); /* no match */ if (nwords == 0) { x_e_putc2(7); return; } if (type == CT_LIST) { x_print_expansions(nwords, words, is_command); x_redraw(0); x_free_words(nwords, words); return; } olen = end - start; nlen = x_longest_prefix(nwords, words); /* complete */ if (nwords == 1 || nlen > olen) { x_goto(xbuf + start); x_delete(olen, false); x_escape(words[0], nlen, x_do_ins); x_adjust(); completed = true; } /* add space if single non-dir match */ if (nwords == 1 && words[0][nlen - 1] != '/') { x_ins(" "); completed = true; } if (type == CT_COMPLIST && !completed) { x_print_expansions(nwords, words, is_command); completed = true; } if (completed) x_redraw(0); x_free_words(nwords, words); } /* NAME: * x_adjust - redraw the line adjusting starting point etc. * * DESCRIPTION: * This function is called when we have exceeded the bounds * of the edit window. It increments x_adj_done so that * functions like x_ins and x_delete know that we have been * called and can skip the x_bs() stuff which has already * been done by x_redraw. * * RETURN VALUE: * None */ static void x_adjust(void) { x_adj_done++; /* flag the fact that we were called. */ /* * we had a problem if the prompt length > xx_cols / 2 */ if ((xbp = xcp - (x_displen / 2)) < xbuf) xbp = xbuf; if (UTFMODE) while ((xbp > xbuf) && ((*xbp & 0xC0) == 0x80)) --xbp; xlp_valid = false; x_redraw(xx_cols); x_flush(); } static void x_e_ungetc(int c) { unget_char = c < 0 ? -1 : (c & 255); } static int x_e_getc(void) { int c; if (unget_char >= 0) { c = unget_char; unget_char = -1; } else if (macroptr) { c = (unsigned char)*macroptr++; if (!*macroptr) macroptr = NULL; } else c = x_getc(); return (c); } static void x_e_putc2(int c) { int width = 1; if (c == '\r' || c == '\n') x_col = 0; if (x_col < xx_cols) { if (UTFMODE && (c > 0x7F)) { char utf_tmp[3]; size_t x; if (c < 0xA0) c = 0xFFFD; x = utf_wctomb(utf_tmp, c); x_putc(utf_tmp[0]); if (x > 1) x_putc(utf_tmp[1]); if (x > 2) x_putc(utf_tmp[2]); width = utf_wcwidth(c); } else x_putc(c); switch (c) { case 7: break; case '\r': case '\n': break; case '\b': x_col--; break; default: x_col += width; break; } } if (x_adj_ok && (x_col < 0 || x_col >= (xx_cols - 2))) x_adjust(); } static void x_e_putc3(const char **cp) { int width = 1, c = **(const unsigned char **)cp; if (c == '\r' || c == '\n') x_col = 0; if (x_col < xx_cols) { if (UTFMODE && (c > 0x7F)) { char *cp2; width = utf_widthadj(*cp, (const char **)&cp2); while (*cp < cp2) x_putcf(*(*cp)++); } else { (*cp)++; x_putc(c); } switch (c) { case 7: break; case '\r': case '\n': break; case '\b': x_col--; break; default: x_col += width; break; } } if (x_adj_ok && (x_col < 0 || x_col >= (xx_cols - 2))) x_adjust(); } static void x_e_puts(const char *s) { int adj = x_adj_done; while (*s && adj == x_adj_done) x_e_putc3(&s); } /* NAME: * x_set_arg - set an arg value for next function * * DESCRIPTION: * This is a simple implementation of M-[0-9]. * * RETURN VALUE: * KSTD */ static int x_set_arg(int c) { int n = 0, first = 1; c &= 255; /* strip command prefix */ for (; c >= 0 && ksh_isdigit(c); c = x_e_getc(), first = 0) n = n * 10 + (c - '0'); if (c < 0 || first) { x_e_putc2(7); x_arg = 1; x_arg_defaulted = 1; } else { x_e_ungetc(c); x_arg = n; x_arg_defaulted = 0; } return KSTD; } /* Comment or uncomment the current line. */ static int x_comment(int c __unused) { int oldsize = x_size_str(xbuf); int len = xep - xbuf; int ret = x_do_comment(xbuf, xend - xbuf, &len); if (ret < 0) x_e_putc2(7); else { x_modified(); xep = xbuf + len; *xep = '\0'; xcp = xbp = xbuf; x_redraw(oldsize); if (ret > 0) return x_newline('\n'); } return KSTD; } static int x_version(int c __unused) { char *o_xbuf = xbuf, *o_xend = xend; char *o_xbp = xbp, *o_xep = xep, *o_xcp = xcp; int vlen, lim = x_lastcp() - xbp; char *v; strdupx(v, KSH_VERSION, ATEMP); xbuf = xbp = xcp = v; xend = xep = v + (vlen = strlen(v)); x_redraw(lim); x_flush(); c = x_e_getc(); xbuf = o_xbuf; xend = o_xend; xbp = o_xbp; xep = o_xep; xcp = o_xcp; x_redraw(vlen); if (c < 0) return KSTD; /* This is what at&t ksh seems to do... Very bizarre */ if (c != ' ') x_e_ungetc(c); afree(v, ATEMP); return KSTD; } static int x_edit_line(int c __unused) { if (x_arg_defaulted) { if (xep == xbuf) { x_e_putc2(7); return (KSTD); } if (modified) { *xep = '\0'; histsave(&source->line, xbuf, true, true); x_arg = 0; } else x_arg = source->line - (histptr - x_histp); } if (x_arg) shf_snprintf(xbuf, xend - xbuf, "%s %d", "fc -e ${VISUAL:-${EDITOR:-vi}} --", x_arg); else strlcpy(xbuf, "fc -e ${VISUAL:-${EDITOR:-vi}} --", xend - xbuf); xep = xbuf + strlen(xbuf); return (x_newline('\n')); } /* NAME: * x_prev_histword - recover word from prev command * * DESCRIPTION: * This function recovers the last word from the previous * command and inserts it into the current edit line. If a * numeric arg is supplied then the n'th word from the * start of the previous command is used. * As a side effect, trashes the mark in order to achieve * being called in a repeatable fashion. * * Bound to M-. * * RETURN VALUE: * KSTD */ static int x_prev_histword(int c __unused) { char *rcp, *cp; char **xhp; int m; if (xmp && modified > 1) x_kill_region(0); m = modified ? modified : 1; xhp = histptr - (m - 1); if ((xhp < history) || !(cp = *xhp)) { x_e_putc2(7); x_modified(); return (KSTD); } x_set_mark(0); if (x_arg_defaulted) { rcp = &cp[strlen(cp) - 1]; /* * ignore white-space after the last word */ while (rcp > cp && is_cfs(*rcp)) rcp--; while (rcp > cp && !is_cfs(*rcp)) rcp--; if (is_cfs(*rcp)) rcp++; x_ins(rcp); } else { char ch; rcp = cp; /* * ignore white-space at start of line */ while (*rcp && is_cfs(*rcp)) rcp++; while (x_arg-- > 1) { while (*rcp && !is_cfs(*rcp)) rcp++; while (*rcp && is_cfs(*rcp)) rcp++; } cp = rcp; while (*rcp && !is_cfs(*rcp)) rcp++; ch = *rcp; *rcp = '\0'; x_ins(cp); *rcp = ch; } modified = m + 1; return KSTD; } /* Uppercase N(1) words */ static int x_fold_upper(int c __unused) { return x_fold_case('U'); } /* Lowercase N(1) words */ static int x_fold_lower(int c __unused) { return x_fold_case('L'); } /* Lowercase N(1) words */ static int x_fold_capitalise(int c __unused) { return x_fold_case('C'); } /* NAME: * x_fold_case - convert word to UPPER/lower/Capital case * * DESCRIPTION: * This function is used to implement M-U,M-u,M-L,M-l,M-C and M-c * to UPPER case, lower case or Capitalise words. * * RETURN VALUE: * None */ static int x_fold_case(int c) { char *cp = xcp; if (cp == xep) { x_e_putc2(7); return KSTD; } while (x_arg--) { /* * first skip over any white-space */ while (cp != xep && is_mfs(*cp)) cp++; /* * do the first char on its own since it may be * a different action than for the rest. */ if (cp != xep) { if (c == 'L') /* lowercase */ *cp = ksh_tolower(*cp); else /* uppercase, capitalise */ *cp = ksh_toupper(*cp); cp++; } /* * now for the rest of the word */ while (cp != xep && !is_mfs(*cp)) { if (c == 'U') /* uppercase */ *cp = ksh_toupper(*cp); else /* lowercase, capitalise */ *cp = ksh_tolower(*cp); cp++; } } x_goto(cp); x_modified(); return KSTD; } /* NAME: * x_lastcp - last visible char * * SYNOPSIS: * x_lastcp() * * DESCRIPTION: * This function returns a pointer to that char in the * edit buffer that will be the last displayed on the * screen. The sequence: * * cp = x_lastcp(); * while (cp > xcp) * x_bs3(&cp); * * Will position the cursor correctly on the screen. * * RETURN VALUE: * cp or NULL */ static char * x_lastcp(void) { if (!xlp_valid) { int i = 0, j; char *xlp2; xlp = xbp; while (xlp < xep) { j = x_size2(xlp, &xlp2); if ((i + j) > x_displen) break; i += j; xlp = xlp2; } } xlp_valid = true; return (xlp); } static bool x_mode(bool onoff) { static bool x_cur_mode; bool prev; if (x_cur_mode == onoff) return x_cur_mode; prev = x_cur_mode; x_cur_mode = onoff; if (onoff) { struct termios cb; cb = tty_state; edchars.erase = cb.c_cc[VERASE]; edchars.kill = cb.c_cc[VKILL]; edchars.intr = cb.c_cc[VINTR]; edchars.quit = cb.c_cc[VQUIT]; edchars.eof = cb.c_cc[VEOF]; #ifdef VWERASE edchars.werase = cb.c_cc[VWERASE]; #endif cb.c_iflag &= ~(INLCR | ICRNL); cb.c_lflag &= ~(ISIG | ICANON | ECHO); #ifdef VLNEXT /* osf/1 processes lnext when ~icanon */ cb.c_cc[VLNEXT] = _POSIX_VDISABLE; #endif /* sunos 4.1.x & osf/1 processes discard(flush) when ~icanon */ #ifdef VDISCARD cb.c_cc[VDISCARD] = _POSIX_VDISABLE; #endif cb.c_cc[VTIME] = 0; cb.c_cc[VMIN] = 1; tcsetattr(tty_fd, TCSADRAIN, &cb); /* Convert unset values to internal 'unset' value */ if (edchars.erase == _POSIX_VDISABLE) edchars.erase = -1; if (edchars.kill == _POSIX_VDISABLE) edchars.kill = -1; if (edchars.intr == _POSIX_VDISABLE) edchars.intr = -1; if (edchars.quit == _POSIX_VDISABLE) edchars.quit = -1; if (edchars.eof == _POSIX_VDISABLE) edchars.eof = -1; if (edchars.werase == _POSIX_VDISABLE) edchars.werase = -1; if (edchars.erase >= 0) { bind_if_not_bound(0, edchars.erase, XFUNC_del_back); bind_if_not_bound(1, edchars.erase, XFUNC_del_bword); } if (edchars.kill >= 0) bind_if_not_bound(0, edchars.kill, XFUNC_del_line); if (edchars.werase >= 0) bind_if_not_bound(0, edchars.werase, XFUNC_del_bword); if (edchars.intr >= 0) bind_if_not_bound(0, edchars.intr, XFUNC_abort); if (edchars.quit >= 0) bind_if_not_bound(0, edchars.quit, XFUNC_noop); } else tcsetattr(tty_fd, TCSADRAIN, &tty_state); return prev; } #ifndef MKSH_NOVI /* +++ vi editing mode +++ */ #define Ctrl(c) (c&0x1f) struct edstate { int winleft; char *cbuf; int cbufsize; int linelen; int cursor; }; static int vi_hook(int); static int nextstate(int); static int vi_insert(int); static int vi_cmd(int, const char *); static int domove(int, const char *, int); static int redo_insert(int); static void yank_range(int, int); static int bracktype(int); static void save_cbuf(void); static void restore_cbuf(void); static int putbuf(const char *, int, int); static void del_range(int, int); static int findch(int, int, int, int); static int forwword(int); static int backword(int); static int endword(int); static int Forwword(int); static int Backword(int); static int Endword(int); static int grabhist(int, int); static int grabsearch(int, int, int, char *); static void redraw_line(int); static void refresh(int); static int outofwin(void); static void rewindow(void); static int newcol(int, int); static void display(char *, char *, int); static void ed_mov_opt(int, char *); static int expand_word(int); static int complete_word(int, int); static int print_expansions(struct edstate *, int); #define char_len(c) ((c) < ' ' || (c) == 0x7F ? 2 : 1) static void x_vi_zotc(int); static void vi_error(void); static void vi_macro_reset(void); static int x_vi_putbuf(const char *, size_t); #define C_ 0x1 /* a valid command that isn't a M_, E_, U_ */ #define M_ 0x2 /* movement command (h, l, etc.) */ #define E_ 0x4 /* extended command (c, d, y) */ #define X_ 0x8 /* long command (@, f, F, t, T, etc.) */ #define U_ 0x10 /* an UN-undoable command (that isn't a M_) */ #define B_ 0x20 /* bad command (^@) */ #define Z_ 0x40 /* repeat count defaults to 0 (not 1) */ #define S_ 0x80 /* search (/, ?) */ #define is_bad(c) (classify[(c)&0x7f]&B_) #define is_cmd(c) (classify[(c)&0x7f]&(M_|E_|C_|U_)) #define is_move(c) (classify[(c)&0x7f]&M_) #define is_extend(c) (classify[(c)&0x7f]&E_) #define is_long(c) (classify[(c)&0x7f]&X_) #define is_undoable(c) (!(classify[(c)&0x7f]&U_)) #define is_srch(c) (classify[(c)&0x7f]&S_) #define is_zerocount(c) (classify[(c)&0x7f]&Z_) const unsigned char classify[128] = { /* 0 1 2 3 4 5 6 7 */ /* 0 ^@ ^A ^B ^C ^D ^E ^F ^G */ B_, 0, 0, 0, 0, C_|U_, C_|Z_, 0, /* 01 ^H ^I ^J ^K ^L ^M ^N ^O */ M_, C_|Z_, 0, 0, C_|U_, 0, C_, 0, /* 02 ^P ^Q ^R ^S ^T ^U ^V ^W */ C_, 0, C_|U_, 0, 0, 0, C_, 0, /* 03 ^X ^Y ^Z ^[ ^\ ^] ^^ ^_ */ C_, 0, 0, C_|Z_, 0, 0, 0, 0, /* 04 ! " # $ % & ' */ M_, 0, 0, C_, M_, M_, 0, 0, /* 05 ( ) * + , - . / */ 0, 0, C_, C_, M_, C_, 0, C_|S_, /* 06 0 1 2 3 4 5 6 7 */ M_, 0, 0, 0, 0, 0, 0, 0, /* 07 8 9 : ; < = > ? */ 0, 0, 0, M_, 0, C_, 0, C_|S_, /* 010 @ A B C D E F G */ C_|X_, C_, M_, C_, C_, M_, M_|X_, C_|U_|Z_, /* 011 H I J K L M N O */ 0, C_, 0, 0, 0, 0, C_|U_, 0, /* 012 P Q R S T U V W */ C_, 0, C_, C_, M_|X_, C_, 0, M_, /* 013 X Y Z [ \ ] ^ _ */ C_, C_|U_, 0, 0, C_|Z_, 0, M_, C_|Z_, /* 014 ` a b c d e f g */ 0, C_, M_, E_, E_, M_, M_|X_, C_|Z_, /* 015 h i j k l m n o */ M_, C_, C_|U_, C_|U_, M_, 0, C_|U_, 0, /* 016 p q r s t u v w */ C_, 0, X_, C_, M_|X_, C_|U_, C_|U_|Z_,M_, /* 017 x y z { | } ~ ^? */ C_, E_|U_, 0, 0, M_|Z_, 0, C_, 0 }; #define MAXVICMD 3 #define SRCHLEN 40 #define INSERT 1 #define REPLACE 2 #define VNORMAL 0 /* command, insert or replace mode */ #define VARG1 1 /* digit prefix (first, eg, 5l) */ #define VEXTCMD 2 /* cmd + movement (eg, cl) */ #define VARG2 3 /* digit prefix (second, eg, 2c3l) */ #define VXCH 4 /* f, F, t, T, @ */ #define VFAIL 5 /* bad command */ #define VCMD 6 /* single char command (eg, X) */ #define VREDO 7 /* . */ #define VLIT 8 /* ^V */ #define VSEARCH 9 /* /, ? */ #define VVERSION 10 /* ^V */ static char undocbuf[LINE]; static struct edstate *save_edstate(struct edstate *old); static void restore_edstate(struct edstate *old, struct edstate *new); static void free_edstate(struct edstate *old); static struct edstate ebuf; static struct edstate undobuf = { 0, undocbuf, LINE, 0, 0 }; static struct edstate *es; /* current editor state */ static struct edstate *undo; static char ibuf[LINE]; /* input buffer */ static int first_insert; /* set when starting in insert mode */ static int saved_inslen; /* saved inslen for first insert */ static int inslen; /* length of input buffer */ static int srchlen; /* length of current search pattern */ static char ybuf[LINE]; /* yank buffer */ static int yanklen; /* length of yank buffer */ static int fsavecmd = ' '; /* last find command */ static int fsavech; /* character to find */ static char lastcmd[MAXVICMD]; /* last non-move command */ static int lastac; /* argcnt for lastcmd */ static int lastsearch = ' '; /* last search command */ static char srchpat[SRCHLEN]; /* last search pattern */ static int insert; /* non-zero in insert mode */ static int hnum; /* position in history */ static int ohnum; /* history line copied (after mod) */ static int hlast; /* 1 past last position in history */ static int state; /* Information for keeping track of macros that are being expanded. * The format of buf is the alias contents followed by a NUL byte followed * by the name (letter) of the alias. The end of the buffer is marked by * a double NUL. The name of the alias is stored so recursive macros can * be detected. */ struct macro_state { unsigned char *p; /* current position in buf */ unsigned char *buf; /* pointer to macro(s) being expanded */ int len; /* how much data in buffer */ }; static struct macro_state macro; enum expand_mode { NONE, EXPAND, COMPLETE, PRINT }; static enum expand_mode expanded = NONE; /* last input was expanded */ static int x_vi(char *buf, size_t len) { int c; state = VNORMAL; ohnum = hnum = hlast = histnum(-1) + 1; insert = INSERT; saved_inslen = inslen; first_insert = 1; inslen = 0; vi_macro_reset(); es = &ebuf; es->cbuf = buf; undo = &undobuf; undo->cbufsize = es->cbufsize = len > LINE ? LINE : len; es->linelen = undo->linelen = 0; es->cursor = undo->cursor = 0; es->winleft = undo->winleft = 0; cur_col = promptlen(prompt); prompt_trunc = (cur_col / x_cols) * x_cols; cur_col -= prompt_trunc; pprompt(prompt, 0); if (cur_col > x_cols - 3 - MIN_EDIT_SPACE) { prompt_redraw = cur_col = 0; x_putc('\n'); } else prompt_redraw = 1; pwidth = cur_col; if (!wbuf_len || wbuf_len != x_cols - 3) { wbuf_len = x_cols - 3; wbuf[0] = aresize(wbuf[0], wbuf_len, APERM); wbuf[1] = aresize(wbuf[1], wbuf_len, APERM); } (void)memset(wbuf[0], ' ', wbuf_len); (void)memset(wbuf[1], ' ', wbuf_len); winwidth = x_cols - pwidth - 3; win = 0; morec = ' '; lastref = 1; holdlen = 0; x_flush(); while (1) { if (macro.p) { c = *macro.p++; /* end of current macro? */ if (!c) { /* more macros left to finish? */ if (*macro.p++) continue; /* must be the end of all the macros */ vi_macro_reset(); c = x_getc(); } } else c = x_getc(); if (c == -1) break; if (state != VLIT) { if (c == edchars.intr || c == edchars.quit) { /* pretend we got an interrupt */ x_vi_zotc(c); x_flush(); trapsig(c == edchars.intr ? SIGINT : SIGQUIT); x_mode(false); unwind(LSHELL); } else if (c == edchars.eof && state != VVERSION) { if (es->linelen == 0) { x_vi_zotc(edchars.eof); c = -1; break; } continue; } } if (vi_hook(c)) break; x_flush(); } x_putc('\r'); x_putc('\n'); x_flush(); if (c == -1 || (ssize_t)len <= es->linelen) return -1; if (es->cbuf != buf) memmove(buf, es->cbuf, es->linelen); buf[es->linelen++] = '\n'; return es->linelen; } static int vi_hook(int ch) { static char curcmd[MAXVICMD], locpat[SRCHLEN]; static int cmdlen, argc1, argc2; switch (state) { case VNORMAL: if (insert != 0) { if (ch == Ctrl('v')) { state = VLIT; ch = '^'; } switch (vi_insert(ch)) { case -1: vi_error(); state = VNORMAL; break; case 0: if (state == VLIT) { es->cursor--; refresh(0); } else refresh(insert != 0); break; case 1: return 1; } } else { if (ch == '\r' || ch == '\n') return 1; cmdlen = 0; argc1 = 0; if (ch >= '1' && ch <= '9') { argc1 = ch - '0'; state = VARG1; } else { curcmd[cmdlen++] = ch; state = nextstate(ch); if (state == VSEARCH) { save_cbuf(); es->cursor = 0; es->linelen = 0; if (ch == '/') { if (putbuf("/", 1, 0) != 0) return -1; } else if (putbuf("?", 1, 0) != 0) return -1; refresh(0); } if (state == VVERSION) { save_cbuf(); es->cursor = 0; es->linelen = 0; putbuf(KSH_VERSION, strlen(KSH_VERSION), 0); refresh(0); } } } break; case VLIT: if (is_bad(ch)) { del_range(es->cursor, es->cursor + 1); vi_error(); } else es->cbuf[es->cursor++] = ch; refresh(1); state = VNORMAL; break; case VVERSION: restore_cbuf(); state = VNORMAL; refresh(0); break; case VARG1: if (ksh_isdigit(ch)) argc1 = argc1 * 10 + ch - '0'; else { curcmd[cmdlen++] = ch; state = nextstate(ch); } break; case VEXTCMD: argc2 = 0; if (ch >= '1' && ch <= '9') { argc2 = ch - '0'; state = VARG2; return 0; } else { curcmd[cmdlen++] = ch; if (ch == curcmd[0]) state = VCMD; else if (is_move(ch)) state = nextstate(ch); else state = VFAIL; } break; case VARG2: if (ksh_isdigit(ch)) argc2 = argc2 * 10 + ch - '0'; else { if (argc1 == 0) argc1 = argc2; else argc1 *= argc2; curcmd[cmdlen++] = ch; if (ch == curcmd[0]) state = VCMD; else if (is_move(ch)) state = nextstate(ch); else state = VFAIL; } break; case VXCH: if (ch == Ctrl('[')) state = VNORMAL; else { curcmd[cmdlen++] = ch; state = VCMD; } break; case VSEARCH: if (ch == '\r' || ch == '\n' /*|| ch == Ctrl('[')*/ ) { restore_cbuf(); /* Repeat last search? */ if (srchlen == 0) { if (!srchpat[0]) { vi_error(); state = VNORMAL; refresh(0); return 0; } } else { locpat[srchlen] = '\0'; (void)strlcpy(srchpat, locpat, sizeof srchpat); } state = VCMD; } else if (ch == edchars.erase || ch == Ctrl('h')) { if (srchlen != 0) { srchlen--; es->linelen -= char_len((unsigned char)locpat[srchlen]); es->cursor = es->linelen; refresh(0); return 0; } restore_cbuf(); state = VNORMAL; refresh(0); } else if (ch == edchars.kill) { srchlen = 0; es->linelen = 1; es->cursor = 1; refresh(0); return 0; } else if (ch == edchars.werase) { int i; int n = srchlen; while (n > 0 && ksh_isspace(locpat[n - 1])) n--; while (n > 0 && !ksh_isspace(locpat[n - 1])) n--; for (i = srchlen; --i >= n; ) es->linelen -= char_len((unsigned char)locpat[i]); srchlen = n; es->cursor = es->linelen; refresh(0); return 0; } else { if (srchlen == SRCHLEN - 1) vi_error(); else { locpat[srchlen++] = ch; if (ch < ' ' || ch == 0x7f) { if (es->linelen + 2 > es->cbufsize) vi_error(); es->cbuf[es->linelen++] = '^'; es->cbuf[es->linelen++] = ch ^ '@'; } else { if (es->linelen >= es->cbufsize) vi_error(); es->cbuf[es->linelen++] = ch; } es->cursor = es->linelen; refresh(0); } return 0; } break; } switch (state) { case VCMD: state = VNORMAL; switch (vi_cmd(argc1, curcmd)) { case -1: vi_error(); refresh(0); break; case 0: if (insert != 0) inslen = 0; refresh(insert != 0); break; case 1: refresh(0); return 1; case 2: /* back from a 'v' command - don't redraw the screen */ return 1; } break; case VREDO: state = VNORMAL; if (argc1 != 0) lastac = argc1; switch (vi_cmd(lastac, lastcmd)) { case -1: vi_error(); refresh(0); break; case 0: if (insert != 0) { if (lastcmd[0] == 's' || lastcmd[0] == 'c' || lastcmd[0] == 'C') { if (redo_insert(1) != 0) vi_error(); } else { if (redo_insert(lastac) != 0) vi_error(); } } refresh(0); break; case 1: refresh(0); return 1; case 2: /* back from a 'v' command - can't happen */ break; } break; case VFAIL: state = VNORMAL; vi_error(); break; } return 0; } static int nextstate(int ch) { if (is_extend(ch)) return VEXTCMD; else if (is_srch(ch)) return VSEARCH; else if (is_long(ch)) return VXCH; else if (ch == '.') return VREDO; else if (ch == Ctrl('v')) return VVERSION; else if (is_cmd(ch)) return VCMD; else return VFAIL; } static int vi_insert(int ch) { int tcursor; if (ch == edchars.erase || ch == Ctrl('h')) { if (insert == REPLACE) { if (es->cursor == undo->cursor) { vi_error(); return 0; } if (inslen > 0) inslen--; es->cursor--; if (es->cursor >= undo->linelen) es->linelen--; else es->cbuf[es->cursor] = undo->cbuf[es->cursor]; } else { if (es->cursor == 0) return 0; if (inslen > 0) inslen--; es->cursor--; es->linelen--; memmove(&es->cbuf[es->cursor], &es->cbuf[es->cursor + 1], es->linelen - es->cursor + 1); } expanded = NONE; return 0; } if (ch == edchars.kill) { if (es->cursor != 0) { inslen = 0; memmove(es->cbuf, &es->cbuf[es->cursor], es->linelen - es->cursor); es->linelen -= es->cursor; es->cursor = 0; } expanded = NONE; return 0; } if (ch == edchars.werase) { if (es->cursor != 0) { tcursor = Backword(1); memmove(&es->cbuf[tcursor], &es->cbuf[es->cursor], es->linelen - es->cursor); es->linelen -= es->cursor - tcursor; if (inslen < es->cursor - tcursor) inslen = 0; else inslen -= es->cursor - tcursor; es->cursor = tcursor; } expanded = NONE; return 0; } /* If any chars are entered before escape, trash the saved insert * buffer (if user inserts & deletes char, ibuf gets trashed and * we don't want to use it) */ if (first_insert && ch != Ctrl('[')) saved_inslen = 0; switch (ch) { case '\0': return -1; case '\r': case '\n': return 1; case Ctrl('['): expanded = NONE; if (first_insert) { first_insert = 0; if (inslen == 0) { inslen = saved_inslen; return redo_insert(0); } lastcmd[0] = 'a'; lastac = 1; } if (lastcmd[0] == 's' || lastcmd[0] == 'c' || lastcmd[0] == 'C') return redo_insert(0); else return redo_insert(lastac - 1); /* { Begin nonstandard vi commands */ case Ctrl('x'): expand_word(0); break; case Ctrl('f'): complete_word(0, 0); break; case Ctrl('e'): print_expansions(es, 0); break; case Ctrl('i'): if (Flag(FVITABCOMPLETE)) { complete_word(0, 0); break; } /* FALLTHROUGH */ /* End nonstandard vi commands } */ default: if (es->linelen >= es->cbufsize - 1) return -1; ibuf[inslen++] = ch; if (insert == INSERT) { memmove(&es->cbuf[es->cursor + 1], &es->cbuf[es->cursor], es->linelen - es->cursor); es->linelen++; } es->cbuf[es->cursor++] = ch; if (insert == REPLACE && es->cursor > es->linelen) es->linelen++; expanded = NONE; } return 0; } static int vi_cmd(int argcnt, const char *cmd) { int ncursor; int cur, c1, c2, c3 = 0; int any; struct edstate *t; if (argcnt == 0 && !is_zerocount(*cmd)) argcnt = 1; if (is_move(*cmd)) { if ((cur = domove(argcnt, cmd, 0)) >= 0) { if (cur == es->linelen && cur != 0) cur--; es->cursor = cur; } else return -1; } else { /* Don't save state in middle of macro.. */ if (is_undoable(*cmd) && !macro.p) { undo->winleft = es->winleft; memmove(undo->cbuf, es->cbuf, es->linelen); undo->linelen = es->linelen; undo->cursor = es->cursor; lastac = argcnt; memmove(lastcmd, cmd, MAXVICMD); } switch (*cmd) { case Ctrl('l'): case Ctrl('r'): redraw_line(1); break; case '@': { static char alias[] = "_\0"; struct tbl *ap; int olen, nlen; char *p, *nbuf; /* lookup letter in alias list... */ alias[1] = cmd[1]; ap = ktsearch(&aliases, alias, hash(alias)); if (!cmd[1] || !ap || !(ap->flag & ISSET)) return -1; /* check if this is a recursive call... */ if ((p = (char *)macro.p)) while ((p = strchr(p, '\0')) && p[1]) if (*++p == cmd[1]) return -1; /* insert alias into macro buffer */ nlen = strlen(ap->val.s) + 1; olen = !macro.p ? 2 : macro.len - (macro.p - macro.buf); nbuf = alloc(nlen + 1 + olen, APERM); memcpy(nbuf, ap->val.s, nlen); nbuf[nlen++] = cmd[1]; if (macro.p) { memcpy(nbuf + nlen, macro.p, olen); afree(macro.buf, APERM); nlen += olen; } else { nbuf[nlen++] = '\0'; nbuf[nlen++] = '\0'; } macro.p = macro.buf = (unsigned char *)nbuf; macro.len = nlen; } break; case 'a': modified = 1; hnum = hlast; if (es->linelen != 0) es->cursor++; insert = INSERT; break; case 'A': modified = 1; hnum = hlast; del_range(0, 0); es->cursor = es->linelen; insert = INSERT; break; case 'S': es->cursor = domove(1, "^", 1); del_range(es->cursor, es->linelen); modified = 1; hnum = hlast; insert = INSERT; break; case 'Y': cmd = "y$"; /* ahhhhhh... */ case 'c': case 'd': case 'y': if (*cmd == cmd[1]) { c1 = *cmd == 'c' ? domove(1, "^", 1) : 0; c2 = es->linelen; } else if (!is_move(cmd[1])) return -1; else { if ((ncursor = domove(argcnt, &cmd[1], 1)) < 0) return -1; if (*cmd == 'c' && (cmd[1] == 'w' || cmd[1] == 'W') && !ksh_isspace(es->cbuf[es->cursor])) { do { --ncursor; } while (ksh_isspace(es->cbuf[ncursor])); ncursor++; } if (ncursor > es->cursor) { c1 = es->cursor; c2 = ncursor; } else { c1 = ncursor; c2 = es->cursor; if (cmd[1] == '%') c2++; } } if (*cmd != 'c' && c1 != c2) yank_range(c1, c2); if (*cmd != 'y') { del_range(c1, c2); es->cursor = c1; } if (*cmd == 'c') { modified = 1; hnum = hlast; insert = INSERT; } break; case 'p': modified = 1; hnum = hlast; if (es->linelen != 0) es->cursor++; while (putbuf(ybuf, yanklen, 0) == 0 && --argcnt > 0) ; if (es->cursor != 0) es->cursor--; if (argcnt != 0) return -1; break; case 'P': modified = 1; hnum = hlast; any = 0; while (putbuf(ybuf, yanklen, 0) == 0 && --argcnt > 0) any = 1; if (any && es->cursor != 0) es->cursor--; if (argcnt != 0) return -1; break; case 'C': modified = 1; hnum = hlast; del_range(es->cursor, es->linelen); insert = INSERT; break; case 'D': yank_range(es->cursor, es->linelen); del_range(es->cursor, es->linelen); if (es->cursor != 0) es->cursor--; break; case 'g': if (!argcnt) argcnt = hlast; /* FALLTHRU */ case 'G': if (!argcnt) argcnt = 1; else argcnt = hlast - (source->line - argcnt); if (grabhist(modified, argcnt - 1) < 0) return -1; else { modified = 0; hnum = argcnt - 1; } break; case 'i': modified = 1; hnum = hlast; insert = INSERT; break; case 'I': modified = 1; hnum = hlast; es->cursor = domove(1, "^", 1); insert = INSERT; break; case 'j': case '+': case Ctrl('n'): if (grabhist(modified, hnum + argcnt) < 0) return -1; else { modified = 0; hnum += argcnt; } break; case 'k': case '-': case Ctrl('p'): if (grabhist(modified, hnum - argcnt) < 0) return -1; else { modified = 0; hnum -= argcnt; } break; case 'r': if (es->linelen == 0) return -1; modified = 1; hnum = hlast; if (cmd[1] == 0) vi_error(); else { int n; if (es->cursor + argcnt > es->linelen) return -1; for (n = 0; n < argcnt; ++n) es->cbuf[es->cursor + n] = cmd[1]; es->cursor += n - 1; } break; case 'R': modified = 1; hnum = hlast; insert = REPLACE; break; case 's': if (es->linelen == 0) return -1; modified = 1; hnum = hlast; if (es->cursor + argcnt > es->linelen) argcnt = es->linelen - es->cursor; del_range(es->cursor, es->cursor + argcnt); insert = INSERT; break; case 'v': if (!argcnt) { if (es->linelen == 0) return -1; if (modified) { es->cbuf[es->linelen] = '\0'; histsave(&source->line, es->cbuf, true, true); } else argcnt = source->line + 1 - (hlast - hnum); } if (argcnt) shf_snprintf(es->cbuf, es->cbufsize, "%s %d", "fc -e ${VISUAL:-${EDITOR:-vi}} --", argcnt); else strlcpy(es->cbuf, "fc -e ${VISUAL:-${EDITOR:-vi}} --", es->cbufsize); es->linelen = strlen(es->cbuf); return 2; case 'x': if (es->linelen == 0) return -1; modified = 1; hnum = hlast; if (es->cursor + argcnt > es->linelen) argcnt = es->linelen - es->cursor; yank_range(es->cursor, es->cursor + argcnt); del_range(es->cursor, es->cursor + argcnt); break; case 'X': if (es->cursor > 0) { modified = 1; hnum = hlast; if (es->cursor < argcnt) argcnt = es->cursor; yank_range(es->cursor - argcnt, es->cursor); del_range(es->cursor - argcnt, es->cursor); es->cursor -= argcnt; } else return -1; break; case 'u': t = es; es = undo; undo = t; break; case 'U': if (!modified) return -1; if (grabhist(modified, ohnum) < 0) return -1; modified = 0; hnum = ohnum; break; case '?': if (hnum == hlast) hnum = -1; /* ahhh */ case '/': c3 = 1; srchlen = 0; lastsearch = *cmd; /* FALLTHRU */ case 'n': case 'N': if (lastsearch == ' ') return -1; if (lastsearch == '?') c1 = 1; else c1 = 0; if (*cmd == 'N') c1 = !c1; if ((c2 = grabsearch(modified, hnum, c1, srchpat)) < 0) { if (c3) { restore_cbuf(); refresh(0); } return -1; } else { modified = 0; hnum = c2; ohnum = hnum; } break; case '_': { int inspace; char *p, *sp; if (histnum(-1) < 0) return -1; p = *histpos(); #define issp(c) (ksh_isspace(c) || (c) == '\n') if (argcnt) { while (*p && issp(*p)) p++; while (*p && --argcnt) { while (*p && !issp(*p)) p++; while (*p && issp(*p)) p++; } if (!*p) return -1; sp = p; } else { sp = p; inspace = 0; while (*p) { if (issp(*p)) inspace = 1; else if (inspace) { inspace = 0; sp = p; } p++; } p = sp; } modified = 1; hnum = hlast; if (es->cursor != es->linelen) es->cursor++; while (*p && !issp(*p)) { argcnt++; p++; } if (putbuf(" ", 1, 0) != 0) argcnt = -1; else if (putbuf(sp, argcnt, 0) != 0) argcnt = -1; if (argcnt < 0) { if (es->cursor != 0) es->cursor--; return -1; } insert = INSERT; } break; case '~': { char *p; int i; if (es->linelen == 0) return -1; for (i = 0; i < argcnt; i++) { p = &es->cbuf[es->cursor]; if (ksh_islower(*p)) { modified = 1; hnum = hlast; *p = ksh_toupper(*p); } else if (ksh_isupper(*p)) { modified = 1; hnum = hlast; *p = ksh_tolower(*p); } if (es->cursor < es->linelen - 1) es->cursor++; } break; } case '#': { int ret = x_do_comment(es->cbuf, es->cbufsize, &es->linelen); if (ret >= 0) es->cursor = 0; return ret; } case '=': /* at&t ksh */ case Ctrl('e'): /* Nonstandard vi/ksh */ print_expansions(es, 1); break; case Ctrl('i'): /* Nonstandard vi/ksh */ if (!Flag(FVITABCOMPLETE)) return -1; complete_word(1, argcnt); break; case Ctrl('['): /* some annoying at&t kshs */ if (!Flag(FVIESCCOMPLETE)) return -1; case '\\': /* at&t ksh */ case Ctrl('f'): /* Nonstandard vi/ksh */ complete_word(1, argcnt); break; case '*': /* at&t ksh */ case Ctrl('x'): /* Nonstandard vi/ksh */ expand_word(1); break; } if (insert == 0 && es->cursor != 0 && es->cursor >= es->linelen) es->cursor--; } return 0; } static int domove(int argcnt, const char *cmd, int sub) { int bcount, i = 0, t; int ncursor = 0; switch (*cmd) { case 'b': if (!sub && es->cursor == 0) return -1; ncursor = backword(argcnt); break; case 'B': if (!sub && es->cursor == 0) return -1; ncursor = Backword(argcnt); break; case 'e': if (!sub && es->cursor + 1 >= es->linelen) return -1; ncursor = endword(argcnt); if (sub && ncursor < es->linelen) ncursor++; break; case 'E': if (!sub && es->cursor + 1 >= es->linelen) return -1; ncursor = Endword(argcnt); if (sub && ncursor < es->linelen) ncursor++; break; case 'f': case 'F': case 't': case 'T': fsavecmd = *cmd; fsavech = cmd[1]; /* drop through */ case ',': case ';': if (fsavecmd == ' ') return -1; i = fsavecmd == 'f' || fsavecmd == 'F'; t = fsavecmd > 'a'; if (*cmd == ',') t = !t; if ((ncursor = findch(fsavech, argcnt, t, i)) < 0) return -1; if (sub && t) ncursor++; break; case 'h': case Ctrl('h'): if (!sub && es->cursor == 0) return -1; ncursor = es->cursor - argcnt; if (ncursor < 0) ncursor = 0; break; case ' ': case 'l': if (!sub && es->cursor + 1 >= es->linelen) return -1; if (es->linelen != 0) { ncursor = es->cursor + argcnt; if (ncursor > es->linelen) ncursor = es->linelen; } break; case 'w': if (!sub && es->cursor + 1 >= es->linelen) return -1; ncursor = forwword(argcnt); break; case 'W': if (!sub && es->cursor + 1 >= es->linelen) return -1; ncursor = Forwword(argcnt); break; case '0': ncursor = 0; break; case '^': ncursor = 0; while (ncursor < es->linelen - 1 && ksh_isspace(es->cbuf[ncursor])) ncursor++; break; case '|': ncursor = argcnt; if (ncursor > es->linelen) ncursor = es->linelen; if (ncursor) ncursor--; break; case '$': if (es->linelen != 0) ncursor = es->linelen; else ncursor = 0; break; case '%': ncursor = es->cursor; while (ncursor < es->linelen && (i = bracktype(es->cbuf[ncursor])) == 0) ncursor++; if (ncursor == es->linelen) return -1; bcount = 1; do { if (i > 0) { if (++ncursor >= es->linelen) return -1; } else { if (--ncursor < 0) return -1; } t = bracktype(es->cbuf[ncursor]); if (t == i) bcount++; else if (t == -i) bcount--; } while (bcount != 0); if (sub && i > 0) ncursor++; break; default: return -1; } return ncursor; } static int redo_insert(int count) { while (count-- > 0) if (putbuf(ibuf, inslen, insert == REPLACE) != 0) return -1; if (es->cursor > 0) es->cursor--; insert = 0; return 0; } static void yank_range(int a, int b) { yanklen = b - a; if (yanklen != 0) memmove(ybuf, &es->cbuf[a], yanklen); } static int bracktype(int ch) { switch (ch) { case '(': return 1; case '[': return 2; case '{': return 3; case ')': return -1; case ']': return -2; case '}': return -3; default: return 0; } } /* * Non user interface editor routines below here */ static void save_cbuf(void) { memmove(holdbuf, es->cbuf, es->linelen); holdlen = es->linelen; holdbuf[holdlen] = '\0'; } static void restore_cbuf(void) { es->cursor = 0; es->linelen = holdlen; memmove(es->cbuf, holdbuf, holdlen); } /* return a new edstate */ static struct edstate * save_edstate(struct edstate *old) { struct edstate *new; new = alloc(sizeof (struct edstate), APERM); new->cbuf = alloc(old->cbufsize, APERM); memcpy(new->cbuf, old->cbuf, old->linelen); new->cbufsize = old->cbufsize; new->linelen = old->linelen; new->cursor = old->cursor; new->winleft = old->winleft; return new; } static void restore_edstate(struct edstate *new, struct edstate *old) { memcpy(new->cbuf, old->cbuf, old->linelen); new->linelen = old->linelen; new->cursor = old->cursor; new->winleft = old->winleft; free_edstate(old); } static void free_edstate(struct edstate *old) { afree(old->cbuf, APERM); afree(old, APERM); } /* * this is used for calling x_escape() in complete_word() */ static int x_vi_putbuf(const char *s, size_t len) { return putbuf(s, len, 0); } static int putbuf(const char *buf, int len, int repl) { if (len == 0) return 0; if (repl) { if (es->cursor + len >= es->cbufsize) return -1; if (es->cursor + len > es->linelen) es->linelen = es->cursor + len; } else { if (es->linelen + len >= es->cbufsize) return -1; memmove(&es->cbuf[es->cursor + len], &es->cbuf[es->cursor], es->linelen - es->cursor); es->linelen += len; } memmove(&es->cbuf[es->cursor], buf, len); es->cursor += len; return 0; } static void del_range(int a, int b) { if (es->linelen != b) memmove(&es->cbuf[a], &es->cbuf[b], es->linelen - b); es->linelen -= b - a; } static int findch(int ch, int cnt, int forw, int incl) { int ncursor; if (es->linelen == 0) return -1; ncursor = es->cursor; while (cnt--) { do { if (forw) { if (++ncursor == es->linelen) return -1; } else { if (--ncursor < 0) return -1; } } while (es->cbuf[ncursor] != ch); } if (!incl) { if (forw) ncursor--; else ncursor++; } return ncursor; } static int forwword(int argcnt) { int ncursor; ncursor = es->cursor; while (ncursor < es->linelen && argcnt--) { if (ksh_isalnux(es->cbuf[ncursor])) while (ksh_isalnux(es->cbuf[ncursor]) && ncursor < es->linelen) ncursor++; else if (!ksh_isspace(es->cbuf[ncursor])) while (!ksh_isalnux(es->cbuf[ncursor]) && !ksh_isspace(es->cbuf[ncursor]) && ncursor < es->linelen) ncursor++; while (ksh_isspace(es->cbuf[ncursor]) && ncursor < es->linelen) ncursor++; } return ncursor; } static int backword(int argcnt) { int ncursor; ncursor = es->cursor; while (ncursor > 0 && argcnt--) { while (--ncursor > 0 && ksh_isspace(es->cbuf[ncursor])) ; if (ncursor > 0) { if (ksh_isalnux(es->cbuf[ncursor])) while (--ncursor >= 0 && ksh_isalnux(es->cbuf[ncursor])) ; else while (--ncursor >= 0 && !ksh_isalnux(es->cbuf[ncursor]) && !ksh_isspace(es->cbuf[ncursor])) ; ncursor++; } } return ncursor; } static int endword(int argcnt) { int ncursor; ncursor = es->cursor; while (ncursor < es->linelen && argcnt--) { while (++ncursor < es->linelen - 1 && ksh_isspace(es->cbuf[ncursor])) ; if (ncursor < es->linelen - 1) { if (ksh_isalnux(es->cbuf[ncursor])) while (++ncursor < es->linelen && ksh_isalnux(es->cbuf[ncursor])) ; else while (++ncursor < es->linelen && !ksh_isalnux(es->cbuf[ncursor]) && !ksh_isspace(es->cbuf[ncursor])) ; ncursor--; } } return ncursor; } static int Forwword(int argcnt) { int ncursor; ncursor = es->cursor; while (ncursor < es->linelen && argcnt--) { while (!ksh_isspace(es->cbuf[ncursor]) && ncursor < es->linelen) ncursor++; while (ksh_isspace(es->cbuf[ncursor]) && ncursor < es->linelen) ncursor++; } return ncursor; } static int Backword(int argcnt) { int ncursor; ncursor = es->cursor; while (ncursor > 0 && argcnt--) { while (--ncursor >= 0 && ksh_isspace(es->cbuf[ncursor])) ; while (ncursor >= 0 && !ksh_isspace(es->cbuf[ncursor])) ncursor--; ncursor++; } return ncursor; } static int Endword(int argcnt) { int ncursor; ncursor = es->cursor; while (ncursor < es->linelen - 1 && argcnt--) { while (++ncursor < es->linelen - 1 && ksh_isspace(es->cbuf[ncursor])) ; if (ncursor < es->linelen - 1) { while (++ncursor < es->linelen && !ksh_isspace(es->cbuf[ncursor])) ; ncursor--; } } return ncursor; } static int grabhist(int save, int n) { char *hptr; if (n < 0 || n > hlast) return -1; if (n == hlast) { restore_cbuf(); ohnum = n; return 0; } (void)histnum(n); if ((hptr = *histpos()) == NULL) { internal_warningf("grabhist: bad history array"); return -1; } if (save) save_cbuf(); if ((es->linelen = strlen(hptr)) >= es->cbufsize) es->linelen = es->cbufsize - 1; memmove(es->cbuf, hptr, es->linelen); es->cursor = 0; ohnum = n; return 0; } static int grabsearch(int save, int start, int fwd, char *pat) { char *hptr; int hist; int anchored; if ((start == 0 && fwd == 0) || (start >= hlast - 1 && fwd == 1)) return -1; if (fwd) start++; else start--; anchored = *pat == '^' ? (++pat, 1) : 0; if ((hist = findhist(start, fwd, pat, anchored)) < 0) { /* if (start != 0 && fwd && match(holdbuf, pat) >= 0) { */ /* XXX should strcmp be strncmp? */ if (start != 0 && fwd && strcmp(holdbuf, pat) >= 0) { restore_cbuf(); return 0; } else return -1; } if (save) save_cbuf(); histnum(hist); hptr = *histpos(); if ((es->linelen = strlen(hptr)) >= es->cbufsize) es->linelen = es->cbufsize - 1; memmove(es->cbuf, hptr, es->linelen); es->cursor = 0; return hist; } static void redraw_line(int newl) { (void)memset(wbuf[win], ' ', wbuf_len); if (newl) { x_putc('\r'); x_putc('\n'); } if (prompt_redraw) pprompt(prompt, prompt_trunc); cur_col = pwidth; morec = ' '; } static void refresh(int leftside) { if (leftside < 0) leftside = lastref; else lastref = leftside; if (outofwin()) rewindow(); display(wbuf[1 - win], wbuf[win], leftside); win = 1 - win; } static int outofwin(void) { int cur, col; if (es->cursor < es->winleft) return 1; col = 0; cur = es->winleft; while (cur < es->cursor) col = newcol((unsigned char)es->cbuf[cur++], col); if (col >= winwidth) return 1; return 0; } static void rewindow(void) { int tcur, tcol; int holdcur1, holdcol1; int holdcur2, holdcol2; holdcur1 = holdcur2 = tcur = 0; holdcol1 = holdcol2 = tcol = 0; while (tcur < es->cursor) { if (tcol - holdcol2 > winwidth / 2) { holdcur1 = holdcur2; holdcol1 = holdcol2; holdcur2 = tcur; holdcol2 = tcol; } tcol = newcol((unsigned char)es->cbuf[tcur++], tcol); } while (tcol - holdcol1 > winwidth / 2) holdcol1 = newcol((unsigned char)es->cbuf[holdcur1++], holdcol1); es->winleft = holdcur1; } static int newcol(int ch, int col) { if (ch == '\t') return (col | 7) + 1; return col + char_len(ch); } static void display(char *wb1, char *wb2, int leftside) { unsigned char ch; char *twb1, *twb2, mc; int cur, col, cnt; int ncol = 0; int moreright; col = 0; cur = es->winleft; moreright = 0; twb1 = wb1; while (col < winwidth && cur < es->linelen) { if (cur == es->cursor && leftside) ncol = col + pwidth; if ((ch = es->cbuf[cur]) == '\t') do { *twb1++ = ' '; } while (++col < winwidth && (col & 7) != 0); else if (col < winwidth) { if (ch < ' ' || ch == 0x7f) { *twb1++ = '^'; if (++col < winwidth) { *twb1++ = ch ^ '@'; col++; } } else { *twb1++ = ch; col++; } } if (cur == es->cursor && !leftside) ncol = col + pwidth - 1; cur++; } if (cur == es->cursor) ncol = col + pwidth; if (col < winwidth) { while (col < winwidth) { *twb1++ = ' '; col++; } } else moreright++; *twb1 = ' '; col = pwidth; cnt = winwidth; twb1 = wb1; twb2 = wb2; while (cnt--) { if (*twb1 != *twb2) { if (cur_col != col) ed_mov_opt(col, wb1); x_putc(*twb1); cur_col++; } twb1++; twb2++; col++; } if (es->winleft > 0 && moreright) /* POSIX says to use * for this but that is a globbing * character and may confuse people; + is more innocuous */ mc = '+'; else if (es->winleft > 0) mc = '<'; else if (moreright) mc = '>'; else mc = ' '; if (mc != morec) { ed_mov_opt(pwidth + winwidth + 1, wb1); x_putc(mc); cur_col++; morec = mc; } if (cur_col != ncol) ed_mov_opt(ncol, wb1); } static void ed_mov_opt(int col, char *wb) { if (col < cur_col) { if (col + 1 < cur_col - col) { x_putc('\r'); if (prompt_redraw) pprompt(prompt, prompt_trunc); cur_col = pwidth; while (cur_col++ < col) x_putcf(*wb++); } else { while (cur_col-- > col) x_putc('\b'); } } else { wb = &wb[cur_col - pwidth]; while (cur_col++ < col) x_putcf(*wb++); } cur_col = col; } /* replace word with all expansions (ie, expand word*) */ static int expand_word(int cmd) { static struct edstate *buf; int rval = 0; int nwords; int start, end; char **words; int i; /* Undo previous expansion */ if (cmd == 0 && expanded == EXPAND && buf) { restore_edstate(es, buf); buf = 0; expanded = NONE; return 0; } if (buf) { free_edstate(buf); buf = 0; } nwords = x_cf_glob(XCF_COMMAND_FILE|XCF_FULLPATH, es->cbuf, es->linelen, es->cursor, &start, &end, &words, NULL); if (nwords == 0) { vi_error(); return -1; } buf = save_edstate(es); expanded = EXPAND; del_range(start, end); es->cursor = start; for (i = 0; i < nwords; ) { if (x_escape(words[i], strlen(words[i]), x_vi_putbuf) != 0) { rval = -1; break; } if (++i < nwords && putbuf(" ", 1, 0) != 0) { rval = -1; break; } } i = buf->cursor - end; if (rval == 0 && i > 0) es->cursor += i; modified = 1; hnum = hlast; insert = INSERT; lastac = 0; refresh(0); return rval; } static int complete_word(int cmd, int count) { static struct edstate *buf; int rval, nwords, start, end, match_len; char **words; char *match; bool is_command, is_unique; /* Undo previous completion */ if (cmd == 0 && expanded == COMPLETE && buf) { print_expansions(buf, 0); expanded = PRINT; return 0; } if (cmd == 0 && expanded == PRINT && buf) { restore_edstate(es, buf); buf = 0; expanded = NONE; return 0; } if (buf) { free_edstate(buf); buf = 0; } /* XCF_FULLPATH for count 'cause the menu printed by print_expansions() * was done this way. */ nwords = x_cf_glob(XCF_COMMAND_FILE | (count ? XCF_FULLPATH : 0), es->cbuf, es->linelen, es->cursor, &start, &end, &words, &is_command); if (nwords == 0) { vi_error(); return -1; } if (count) { int i; count--; if (count >= nwords) { vi_error(); x_print_expansions(nwords, words, is_command); x_free_words(nwords, words); redraw_line(0); return -1; } /* * Expand the count'th word to its basename */ if (is_command) { match = words[count] + x_basename(words[count], NULL); /* If more than one possible match, use full path */ for (i = 0; i < nwords; i++) if (i != count && strcmp(words[i] + x_basename(words[i], NULL), match) == 0) { match = words[count]; break; } } else match = words[count]; match_len = strlen(match); is_unique = true; /* expanded = PRINT; next call undo */ } else { match = words[0]; match_len = x_longest_prefix(nwords, words); expanded = COMPLETE; /* next call will list completions */ is_unique = nwords == 1; } buf = save_edstate(es); del_range(start, end); es->cursor = start; /* escape all shell-sensitive characters and put the result into * command buffer */ rval = x_escape(match, match_len, x_vi_putbuf); if (rval == 0 && is_unique) { /* If exact match, don't undo. Allows directory completions * to be used (ie, complete the next portion of the path). */ expanded = NONE; /* If not a directory, add a space to the end... */ if (match_len > 0 && match[match_len - 1] != '/') rval = putbuf(" ", 1, 0); } x_free_words(nwords, words); modified = 1; hnum = hlast; insert = INSERT; lastac = 0; /* prevent this from being redone... */ refresh(0); return rval; } static int print_expansions(struct edstate *est, int cmd __unused) { int start, end, nwords; char **words; bool is_command; nwords = x_cf_glob(XCF_COMMAND_FILE | XCF_FULLPATH, est->cbuf, est->linelen, est->cursor, &start, &end, &words, &is_command); if (nwords == 0) { vi_error(); return -1; } x_print_expansions(nwords, words, is_command); x_free_words(nwords, words); redraw_line(0); return 0; } /* Similar to x_zotc(emacs.c), but no tab weirdness */ static void x_vi_zotc(int c) { if (c < ' ' || c == 0x7f) { x_putc('^'); c ^= '@'; } x_putc(c); } static void vi_error(void) { /* Beem out of any macros as soon as an error occurs */ vi_macro_reset(); x_putc(7); x_flush(); } static void vi_macro_reset(void) { if (macro.p) { afree(macro.buf, APERM); memset((char *)¯o, 0, sizeof(macro)); } } #endif /* !MKSH_NOVI */