2180 lines
41 KiB
C
2180 lines
41 KiB
C
/*
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* Emacs-like command line editing and history
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*
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* created by Ron Natalie at BRL
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* modified by Doug Kingston, Doug Gwyn, and Lou Salkind
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* adapted to PD ksh by Eric Gisin
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*/
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#include "config.h"
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#ifdef EMACS
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#include "sh.h"
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#include "ksh_stat.h"
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#include "ksh_dir.h"
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#include <ctype.h>
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#include "edit.h"
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static Area aedit;
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#define AEDIT &aedit /* area for kill ring and macro defns */
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#undef CTRL /* _BSD brain damage */
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#define CTRL(x) ((x) == '?' ? 0x7F : (x) & 0x1F) /* ASCII */
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#define UNCTRL(x) ((x) == 0x7F ? '?' : (x) | 0x40) /* ASCII */
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/* values returned by keyboard functions */
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#define KSTD 0
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#define KEOL 1 /* ^M, ^J */
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#define KINTR 2 /* ^G, ^C */
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struct x_ftab {
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int (*xf_func) ARGS((int c));
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const char *xf_name;
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short xf_flags;
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};
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/* index into struct x_ftab x_ftab[] - small is good */
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typedef unsigned char Findex;
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struct x_defbindings {
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Findex xdb_func; /* XFUNC_* */
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char xdb_tab;
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unsigned char xdb_char;
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};
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#define XF_ARG 1 /* command takes number prefix */
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#define XF_NOBIND 2 /* not allowed to bind to function */
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#define XF_PREFIX 4 /* function sets prefix */
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/* Separator for completion */
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#define is_cfs(c) (c == ' ' || c == '\t' || c == '"' || c == '\'')
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#define is_mfs(c) (!(isalnum(c) || c == '_' || c == '$')) /* Separator for motion */
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#ifdef OS2
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/* Deal with 8 bit chars & an extra prefix for function key (these two
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* changes increase memory usage from 9,216 bytes to 24,416 bytes...)
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*/
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# define CHARMASK 0xFF /* 8-bit ASCII character mask */
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# define X_TABSZ 256 /* size of keydef tables etc */
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# define X_NTABS 4 /* normal, meta1, meta2, meta3 */
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static int x_prefix3 = 0xE0;
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#else /* OS2 */
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# define CHARMASK 0x7F /* 7-bit ASCII character mask */
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# define X_TABSZ 128 /* size of keydef tables etc */
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# define X_NTABS 3 /* normal, meta1, meta2 */
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#endif /* OS2 */
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/* Arguments for do_complete()
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* 0 = enumerate M-= complete as much as possible and then list
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* 1 = complete M-Esc
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* 2 = list M-?
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*/
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typedef enum { CT_LIST, /* list the possible completions */
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CT_COMPLETE, /* complete to longest prefix */
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CT_COMPLIST /* complete and then list (if non-exact) */
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} Comp_type;
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/* { from 4.9 edit.h */
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/*
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* The following are used for my horizontal scrolling stuff
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*/
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static char *xbuf; /* beg input buffer */
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static char *xend; /* end input buffer */
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static char *xcp; /* current position */
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static char *xep; /* current end */
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static char *xbp; /* start of visible portion of input buffer */
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static char *xlp; /* last char visible on screen */
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static int x_adj_ok;
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/*
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* we use x_adj_done so that functions can tell
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* whether x_adjust() has been called while they are active.
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*/
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static int x_adj_done;
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static int xx_cols;
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static int x_col;
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static int x_displen;
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static int x_arg; /* general purpose arg */
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static int x_arg_defaulted;/* x_arg not explicitly set; defaulted to 1 */
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static int xlp_valid;
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/* end from 4.9 edit.h } */
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static int x_prefix1 = CTRL('['), x_prefix2 = CTRL('X');
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static char **x_histp; /* history position */
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static int x_nextcmd; /* for newline-and-next */
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static char *xmp; /* mark pointer */
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static Findex x_last_command;
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static Findex (*x_tab)[X_TABSZ]; /* key definition */
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static char *(*x_atab)[X_TABSZ]; /* macro definitions */
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#define KILLSIZE 20
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static char *killstack[KILLSIZE];
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static int killsp, killtp;
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static int x_curprefix;
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static char *macroptr;
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static int prompt_skip;
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static int x_ins ARGS((char *cp));
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static void x_delete ARGS((int nc, int force_push));
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static int x_bword ARGS((void));
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static int x_fword ARGS((void));
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static void x_goto ARGS((char *cp));
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static void x_bs ARGS((int c));
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static int x_size_str ARGS((char *cp));
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static int x_size ARGS((int c));
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static void x_zots ARGS((char *str));
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static void x_zotc ARGS((int c));
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static void x_load_hist ARGS((char **hp));
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static int x_search ARGS((char *pat, int sameline, int offset));
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static int x_match ARGS((char *str, char *pat));
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static void x_redraw ARGS((int limit));
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static void x_push ARGS((int nchars));
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static char * x_mapin ARGS((const char *cp));
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static char * x_mapout ARGS((int c));
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static void x_print ARGS((int prefix, int key));
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static void x_adjust ARGS((void));
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static void x_e_ungetc ARGS((int c));
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static int x_e_getc ARGS((void));
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static void x_e_putc ARGS((int c));
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static void x_e_puts ARGS((const char *s));
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static int x_fold_case ARGS((int c));
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static char *x_lastcp ARGS((void));
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static void do_complete ARGS((int flags, Comp_type type));
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/* The lines between START-FUNC-TAB .. END-FUNC-TAB are run through a
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* script (emacs-gen.sh) that generates emacs.out which contains:
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* - function declarations for x_* functions
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* - defines of the form XFUNC_<name> where <name> is function
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* name, sans leading x_.
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* Note that the script treats #ifdef and { 0, 0, 0} specially - use with
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* caution.
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*/
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#include "emacs.out"
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static const struct x_ftab x_ftab[] = {
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/* @START-FUNC-TAB@ */
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{ x_abort, "abort", 0 },
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{ x_beg_hist, "beginning-of-history", 0 },
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{ x_comp_comm, "complete-command", 0 },
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{ x_comp_file, "complete-file", 0 },
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{ x_complete, "complete", 0 },
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{ x_del_back, "delete-char-backward", XF_ARG },
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{ x_del_bword, "delete-word-backward", XF_ARG },
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{ x_del_char, "delete-char-forward", XF_ARG },
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{ x_del_fword, "delete-word-forward", XF_ARG },
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{ x_del_line, "kill-line", 0 },
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{ x_draw_line, "redraw", 0 },
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{ x_end_hist, "end-of-history", 0 },
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{ x_end_of_text, "eot", 0 },
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{ x_enumerate, "list", 0 },
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{ x_eot_del, "eot-or-delete", XF_ARG },
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{ x_error, "error", 0 },
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{ x_goto_hist, "goto-history", XF_ARG },
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{ x_ins_string, "macro-string", XF_NOBIND },
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{ x_insert, "auto-insert", XF_ARG },
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{ x_kill, "kill-to-eol", XF_ARG },
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{ x_kill_region, "kill-region", 0 },
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{ x_list_comm, "list-command", 0 },
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{ x_list_file, "list-file", 0 },
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{ x_literal, "quote", 0 },
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{ x_meta1, "prefix-1", XF_PREFIX },
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{ x_meta2, "prefix-2", XF_PREFIX },
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{ x_meta_yank, "yank-pop", 0 },
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{ x_mv_back, "backward-char", XF_ARG },
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{ x_mv_begin, "beginning-of-line", 0 },
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{ x_mv_bword, "backward-word", XF_ARG },
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{ x_mv_end, "end-of-line", 0 },
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{ x_mv_forw, "forward-char", XF_ARG },
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{ x_mv_fword, "forward-word", XF_ARG },
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{ x_newline, "newline", 0 },
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{ x_next_com, "down-history", XF_ARG },
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{ x_nl_next_com, "newline-and-next", 0 },
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{ x_noop, "no-op", 0 },
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{ x_prev_com, "up-history", XF_ARG },
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{ x_prev_histword, "prev-hist-word", XF_ARG },
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{ x_search_char_forw, "search-character-forward", XF_ARG },
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{ x_search_char_back, "search-character-backward", XF_ARG },
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{ x_search_hist, "search-history", 0 },
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{ x_set_mark, "set-mark-command", 0 },
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{ x_stuff, "stuff", 0 },
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{ x_stuffreset, "stuff-reset", 0 },
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{ x_transpose, "transpose-chars", 0 },
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{ x_version, "version", 0 },
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{ x_xchg_point_mark, "exchange-point-and-mark", 0 },
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{ x_yank, "yank", 0 },
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{ x_comp_list, "complete-list", 0 },
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{ x_expand, "expand-file", 0 },
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{ x_fold_capitialize, "capitalize-word", XF_ARG },
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{ x_fold_lower, "downcase-word", XF_ARG },
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{ x_fold_upper, "upcase-word", XF_ARG },
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{ x_set_arg, "set-arg", XF_NOBIND },
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{ x_comment, "comment", 0 },
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#ifdef SILLY
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{ x_game_of_life, "play-game-of-life", 0 },
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#else
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{ 0, 0, 0 },
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#endif
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#ifdef DEBUG
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{ x_debug_info, "debug-info", 0 },
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#else
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{ 0, 0, 0 },
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#endif
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#ifdef OS2
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{ x_meta3, "prefix-3", XF_PREFIX },
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#else
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{ 0, 0, 0 },
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#endif
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/* @END-FUNC-TAB@ */
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};
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static struct x_defbindings const x_defbindings[] = {
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{ XFUNC_del_back, 0, CTRL('?') },
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{ XFUNC_del_bword, 1, CTRL('?') },
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{ XFUNC_eot_del, 0, CTRL('D') },
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{ XFUNC_del_back, 0, CTRL('H') },
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{ XFUNC_del_bword, 1, CTRL('H') },
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{ XFUNC_del_bword, 1, 'h' },
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{ XFUNC_mv_bword, 1, 'b' },
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{ XFUNC_mv_fword, 1, 'f' },
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{ XFUNC_del_fword, 1, 'd' },
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{ XFUNC_mv_back, 0, CTRL('B') },
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{ XFUNC_mv_forw, 0, CTRL('F') },
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{ XFUNC_search_char_forw, 0, CTRL(']') },
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{ XFUNC_search_char_back, 1, CTRL(']') },
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{ XFUNC_newline, 0, CTRL('M') },
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{ XFUNC_newline, 0, CTRL('J') },
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{ XFUNC_end_of_text, 0, CTRL('_') },
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{ XFUNC_abort, 0, CTRL('G') },
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{ XFUNC_prev_com, 0, CTRL('P') },
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{ XFUNC_next_com, 0, CTRL('N') },
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{ XFUNC_nl_next_com, 0, CTRL('O') },
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{ XFUNC_search_hist, 0, CTRL('R') },
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{ XFUNC_beg_hist, 1, '<' },
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{ XFUNC_end_hist, 1, '>' },
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{ XFUNC_goto_hist, 1, 'g' },
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{ XFUNC_mv_end, 0, CTRL('E') },
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{ XFUNC_mv_begin, 0, CTRL('A') },
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{ XFUNC_draw_line, 0, CTRL('L') },
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{ XFUNC_meta1, 0, CTRL('[') },
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{ XFUNC_meta2, 0, CTRL('X') },
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{ XFUNC_kill, 0, CTRL('K') },
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{ XFUNC_yank, 0, CTRL('Y') },
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{ XFUNC_meta_yank, 1, 'y' },
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{ XFUNC_literal, 0, CTRL('^') },
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{ XFUNC_comment, 1, '#' },
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#if defined(BRL) && defined(TIOCSTI)
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{ XFUNC_stuff, 0, CTRL('T') },
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#else
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{ XFUNC_transpose, 0, CTRL('T') },
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#endif
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{ XFUNC_complete, 1, CTRL('[') },
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{ XFUNC_comp_list, 1, '=' },
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{ XFUNC_enumerate, 1, '?' },
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{ XFUNC_expand, 1, '*' },
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{ XFUNC_comp_file, 1, CTRL('X') },
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{ XFUNC_comp_comm, 2, CTRL('[') },
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{ XFUNC_list_comm, 2, '?' },
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{ XFUNC_list_file, 2, CTRL('Y') },
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{ XFUNC_set_mark, 1, ' ' },
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{ XFUNC_kill_region, 0, CTRL('W') },
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{ XFUNC_xchg_point_mark, 2, CTRL('X') },
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{ XFUNC_version, 0, CTRL('V') },
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#ifdef DEBUG
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{ XFUNC_debug_info, 1, CTRL('H') },
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#endif
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{ XFUNC_prev_histword, 1, '.' },
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{ XFUNC_prev_histword, 1, '_' },
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{ XFUNC_set_arg, 1, '0' },
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{ XFUNC_set_arg, 1, '1' },
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{ XFUNC_set_arg, 1, '2' },
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{ XFUNC_set_arg, 1, '3' },
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{ XFUNC_set_arg, 1, '4' },
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{ XFUNC_set_arg, 1, '5' },
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{ XFUNC_set_arg, 1, '6' },
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{ XFUNC_set_arg, 1, '7' },
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{ XFUNC_set_arg, 1, '8' },
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{ XFUNC_set_arg, 1, '9' },
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{ XFUNC_fold_upper, 1, 'U' },
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{ XFUNC_fold_upper, 1, 'u' },
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{ XFUNC_fold_lower, 1, 'L' },
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{ XFUNC_fold_lower, 1, 'l' },
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{ XFUNC_fold_capitialize, 1, 'C' },
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{ XFUNC_fold_capitialize, 1, 'c' },
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#ifdef OS2
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{ XFUNC_meta3, 0, 0xE0 },
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{ XFUNC_mv_back, 3, 'K' },
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{ XFUNC_mv_forw, 3, 'M' },
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{ XFUNC_next_com, 3, 'P' },
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{ XFUNC_prev_com, 3, 'H' },
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#else /* OS2 */
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/* These for ansi arrow keys: arguablely shouldn't be here by
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* default, but its simpler/faster/smaller than using termcap
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* entries.
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*/
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{ XFUNC_meta2, 1, '[' },
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{ XFUNC_prev_com, 2, 'A' },
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{ XFUNC_next_com, 2, 'B' },
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{ XFUNC_mv_forw, 2, 'C' },
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{ XFUNC_mv_back, 2, 'D' },
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#endif /* OS2 */
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};
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int
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x_emacs(buf, len)
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char *buf;
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size_t len;
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{
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int c;
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const char *p;
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int i;
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Findex f;
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xbp = xbuf = buf; xend = buf + len;
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xlp = xcp = xep = buf;
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*xcp = 0;
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xlp_valid = TRUE;
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xmp = NULL;
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x_curprefix = 0;
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macroptr = (char *) 0;
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x_histp = histptr + 1;
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x_last_command = XFUNC_error;
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xx_cols = x_cols;
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x_col = promptlen(prompt, &p);
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prompt_skip = p - prompt;
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x_adj_ok = 1;
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x_displen = xx_cols - 2 - x_col;
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x_adj_done = 0;
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pprompt(prompt, 0);
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if (x_nextcmd >= 0) {
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int off = source->line - x_nextcmd;
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if (histptr - history >= off)
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x_load_hist(histptr - off);
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x_nextcmd = -1;
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}
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while (1) {
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x_flush();
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if ((c = x_e_getc()) < 0)
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return 0;
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f = x_curprefix == -1 ? XFUNC_insert
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: x_tab[x_curprefix][c&CHARMASK];
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if (!(x_ftab[f].xf_flags & XF_PREFIX)
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&& x_last_command != XFUNC_set_arg)
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{
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x_arg = 1;
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x_arg_defaulted = 1;
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}
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i = c | (x_curprefix << 8);
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x_curprefix = 0;
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switch (i = (*x_ftab[f].xf_func)(i)) {
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case KSTD:
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if (!(x_ftab[f].xf_flags & XF_PREFIX))
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x_last_command = f;
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break;
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case KEOL:
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i = xep - xbuf;
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return i;
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case KINTR: /* special case for interrupt */
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trapsig(SIGINT);
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x_mode(FALSE);
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unwind(LSHELL);
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}
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}
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}
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static int
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x_insert(c)
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int c;
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{
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char str[2];
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/*
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* Should allow tab and control chars.
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*/
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if (c == 0) {
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x_e_putc(BEL);
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return KSTD;
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}
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str[0] = c;
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str[1] = '\0';
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while (x_arg--)
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x_ins(str);
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return KSTD;
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}
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static int
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x_ins_string(c)
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int c;
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{
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if (macroptr) {
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x_e_putc(BEL);
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return KSTD;
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}
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macroptr = x_atab[c>>8][c & CHARMASK];
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if (macroptr && !*macroptr) {
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/* XXX bell? */
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macroptr = (char *) 0;
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}
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return KSTD;
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}
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static int
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x_do_ins(cp, len)
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const char *cp;
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int len;
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{
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if (xep+len >= xend) {
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x_e_putc(BEL);
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return -1;
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}
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memmove(xcp+len, xcp, xep - xcp + 1);
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memmove(xcp, cp, len);
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xcp += len;
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xep += len;
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return 0;
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}
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static int
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x_ins(s)
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char *s;
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{
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char *cp = xcp;
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register int adj = x_adj_done;
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if (x_do_ins(s, strlen(s)) < 0)
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return -1;
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/*
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* x_zots() may result in a call to x_adjust()
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* we want xcp to reflect the new position.
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*/
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xlp_valid = FALSE;
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x_lastcp();
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x_adj_ok = (xcp >= xlp);
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x_zots(cp);
|
|
if (adj == x_adj_done) /* has x_adjust() been called? */
|
|
{
|
|
/* no */
|
|
for (cp = xlp; cp > xcp; )
|
|
x_bs(*--cp);
|
|
}
|
|
|
|
x_adj_ok = 1;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
x_del_back(c)
|
|
int c;
|
|
{
|
|
int col = xcp - xbuf;
|
|
|
|
if (col == 0) {
|
|
x_e_putc(BEL);
|
|
return KSTD;
|
|
}
|
|
if (x_arg > col)
|
|
x_arg = col;
|
|
x_goto(xcp - x_arg);
|
|
x_delete(x_arg, FALSE);
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_del_char(c)
|
|
int c;
|
|
{
|
|
int nleft = xep - xcp;
|
|
|
|
if (!nleft) {
|
|
x_e_putc(BEL);
|
|
return KSTD;
|
|
}
|
|
if (x_arg > nleft)
|
|
x_arg = nleft;
|
|
x_delete(x_arg, FALSE);
|
|
return KSTD;
|
|
}
|
|
|
|
/* Delete nc chars to the right of the cursor (including cursor position) */
|
|
static void
|
|
x_delete(nc, force_push)
|
|
int nc;
|
|
int force_push;
|
|
{
|
|
int i,j;
|
|
char *cp;
|
|
|
|
if (nc == 0)
|
|
return;
|
|
if (xmp != NULL && xmp > xcp) {
|
|
if (xcp + nc > xmp)
|
|
xmp = xcp;
|
|
else
|
|
xmp -= nc;
|
|
}
|
|
|
|
/*
|
|
* This lets us yank a word we have deleted.
|
|
*/
|
|
if (nc > 1 || force_push)
|
|
x_push(nc);
|
|
|
|
xep -= nc;
|
|
cp = xcp;
|
|
j = 0;
|
|
i = nc;
|
|
while (i--) {
|
|
j += x_size(*cp++);
|
|
}
|
|
memmove(xcp, xcp+nc, xep - xcp + 1); /* Copies the null */
|
|
x_adj_ok = 0; /* don't redraw */
|
|
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)
|
|
{
|
|
j = (j < i) ? j : i;
|
|
i = j;
|
|
while (i--)
|
|
x_e_putc(' ');
|
|
i = j;
|
|
while (i--)
|
|
x_e_putc('\b');
|
|
}
|
|
/*x_goto(xcp);*/
|
|
x_adj_ok = 1;
|
|
xlp_valid = FALSE;
|
|
for (cp = x_lastcp(); cp > xcp; )
|
|
x_bs(*--cp);
|
|
|
|
return;
|
|
}
|
|
|
|
static int
|
|
x_del_bword(c)
|
|
int c;
|
|
{
|
|
x_delete(x_bword(), FALSE);
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_mv_bword(c)
|
|
int c;
|
|
{
|
|
(void)x_bword();
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_mv_fword(c)
|
|
int c;
|
|
{
|
|
x_goto(xcp + x_fword());
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_del_fword(c)
|
|
int c;
|
|
{
|
|
x_delete(x_fword(), FALSE);
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_bword()
|
|
{
|
|
int nc = 0;
|
|
register char *cp = xcp;
|
|
|
|
if (cp == xbuf) {
|
|
x_e_putc(BEL);
|
|
return 0;
|
|
}
|
|
while (x_arg--)
|
|
{
|
|
while (cp != xbuf && is_mfs(cp[-1]))
|
|
{
|
|
cp--;
|
|
nc++;
|
|
}
|
|
while (cp != xbuf && !is_mfs(cp[-1]))
|
|
{
|
|
cp--;
|
|
nc++;
|
|
}
|
|
}
|
|
x_goto(cp);
|
|
return nc;
|
|
}
|
|
|
|
static int
|
|
x_fword()
|
|
{
|
|
int nc = 0;
|
|
register char *cp = xcp;
|
|
|
|
if (cp == xep) {
|
|
x_e_putc(BEL);
|
|
return 0;
|
|
}
|
|
while (x_arg--)
|
|
{
|
|
while (cp != xep && is_mfs(*cp))
|
|
{
|
|
cp++;
|
|
nc++;
|
|
}
|
|
while (cp != xep && !is_mfs(*cp))
|
|
{
|
|
cp++;
|
|
nc++;
|
|
}
|
|
}
|
|
return nc;
|
|
}
|
|
|
|
static void
|
|
x_goto(cp)
|
|
register char *cp;
|
|
{
|
|
if (cp < xbp || cp >= (xbp + x_displen))
|
|
{
|
|
/* we are heading off screen */
|
|
xcp = cp;
|
|
x_adjust();
|
|
}
|
|
else
|
|
{
|
|
if (cp < xcp) /* move back */
|
|
{
|
|
while (cp < xcp)
|
|
x_bs(*--xcp);
|
|
}
|
|
else
|
|
{
|
|
if (cp > xcp) /* move forward */
|
|
{
|
|
while (cp > xcp)
|
|
x_zotc(*xcp++);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
x_bs(c)
|
|
int c;
|
|
{
|
|
register i;
|
|
i = x_size(c);
|
|
while (i--)
|
|
x_e_putc('\b');
|
|
}
|
|
|
|
static int
|
|
x_size_str(cp)
|
|
register char *cp;
|
|
{
|
|
register size = 0;
|
|
while (*cp)
|
|
size += x_size(*cp++);
|
|
return size;
|
|
}
|
|
|
|
static int
|
|
x_size(c)
|
|
int c;
|
|
{
|
|
if (c=='\t')
|
|
return 4; /* Kludge, tabs are always four spaces. */
|
|
if (c < ' ' || c == 0x7F) /* ASCII control char */
|
|
return 2;
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
x_zots(str)
|
|
register char *str;
|
|
{
|
|
register int adj = x_adj_done;
|
|
|
|
x_lastcp();
|
|
while (*str && str < xlp && adj == x_adj_done)
|
|
x_zotc(*str++);
|
|
}
|
|
|
|
static void
|
|
x_zotc(c)
|
|
int c;
|
|
{
|
|
if (c == '\t') {
|
|
/* Kludge, tabs are always four spaces. */
|
|
x_e_puts(" ");
|
|
} else if (c < ' ' || c == 0x7F) { /* ASCII */
|
|
x_e_putc('^');
|
|
x_e_putc(UNCTRL(c));
|
|
} else
|
|
x_e_putc(c);
|
|
}
|
|
|
|
static int
|
|
x_mv_back(c)
|
|
int c;
|
|
{
|
|
int col = xcp - xbuf;
|
|
|
|
if (col == 0) {
|
|
x_e_putc(BEL);
|
|
return KSTD;
|
|
}
|
|
if (x_arg > col)
|
|
x_arg = col;
|
|
x_goto(xcp - x_arg);
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_mv_forw(c)
|
|
int c;
|
|
{
|
|
int nleft = xep - xcp;
|
|
|
|
if (!nleft) {
|
|
x_e_putc(BEL);
|
|
return KSTD;
|
|
}
|
|
if (x_arg > nleft)
|
|
x_arg = nleft;
|
|
x_goto(xcp + x_arg);
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_search_char_forw(c)
|
|
int c;
|
|
{
|
|
char *cp = xcp;
|
|
|
|
*xep = '\0';
|
|
c = x_e_getc();
|
|
while (x_arg--) {
|
|
if (c < 0
|
|
|| ((cp = (cp == xep) ? NULL : strchr(cp + 1, c)) == NULL
|
|
&& (cp = strchr(xbuf, c)) == NULL))
|
|
{
|
|
x_e_putc(BEL);
|
|
return KSTD;
|
|
}
|
|
}
|
|
x_goto(cp);
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_search_char_back(c)
|
|
int c;
|
|
{
|
|
char *cp = xcp, *p;
|
|
|
|
c = x_e_getc();
|
|
for (; x_arg--; cp = p)
|
|
for (p = cp; ; ) {
|
|
if (p-- == xbuf)
|
|
p = xep;
|
|
if (c < 0 || p == cp) {
|
|
x_e_putc(BEL);
|
|
return KSTD;
|
|
}
|
|
if (*p == c)
|
|
break;
|
|
}
|
|
x_goto(cp);
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_newline(c)
|
|
int c;
|
|
{
|
|
x_e_putc('\r');
|
|
x_e_putc('\n');
|
|
x_flush();
|
|
*xep++ = '\n';
|
|
return KEOL;
|
|
}
|
|
|
|
static int
|
|
x_end_of_text(c)
|
|
int c;
|
|
{
|
|
return KEOL;
|
|
}
|
|
|
|
static int x_beg_hist(c) int c; { x_load_hist(history); return KSTD;}
|
|
|
|
static int x_end_hist(c) int c; { x_load_hist(histptr); return KSTD;}
|
|
|
|
static int x_prev_com(c) int c; { x_load_hist(x_histp - x_arg); return KSTD;}
|
|
|
|
static int x_next_com(c) int c; { 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(c)
|
|
int c;
|
|
{
|
|
if (x_arg_defaulted)
|
|
x_load_hist(history);
|
|
else
|
|
x_load_hist(histptr + x_arg - source->line);
|
|
return KSTD;
|
|
}
|
|
|
|
static void
|
|
x_load_hist(hp)
|
|
register char **hp;
|
|
{
|
|
int oldsize;
|
|
|
|
if (hp < history || hp > histptr) {
|
|
x_e_putc(BEL);
|
|
return;
|
|
}
|
|
x_histp = hp;
|
|
oldsize = x_size_str(xbuf);
|
|
(void)strcpy(xbuf, *hp);
|
|
xbp = xbuf;
|
|
xep = xcp = xbuf + strlen(*hp);
|
|
xlp_valid = FALSE;
|
|
if (xep > x_lastcp())
|
|
x_goto(xep);
|
|
else
|
|
x_redraw(oldsize);
|
|
}
|
|
|
|
static int
|
|
x_nl_next_com(c)
|
|
int c;
|
|
{
|
|
x_nextcmd = source->line - (histptr - x_histp) + 1;
|
|
return (x_newline(c));
|
|
}
|
|
|
|
static int
|
|
x_eot_del(c)
|
|
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(c)
|
|
int c;
|
|
{
|
|
int offset = -1; /* offset of match in xbuf, else -1 */
|
|
char pat [256+1]; /* pattern buffer */
|
|
register char *p = pat;
|
|
Findex 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&CHARMASK];
|
|
if (c == CTRL('['))
|
|
break;
|
|
else 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_putc(BEL);
|
|
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 { /* other command */
|
|
x_e_ungetc(c);
|
|
break;
|
|
}
|
|
}
|
|
if (offset < 0)
|
|
x_redraw(-1);
|
|
return KSTD;
|
|
}
|
|
|
|
/* search backward from current line */
|
|
static int
|
|
x_search(pat, sameline, offset)
|
|
char *pat;
|
|
int sameline;
|
|
int offset;
|
|
{
|
|
register 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_putc('\n');
|
|
x_load_hist(hp);
|
|
x_goto(xbuf + i + strlen(pat) - (*pat == '^'));
|
|
return i;
|
|
}
|
|
}
|
|
x_e_putc(BEL);
|
|
x_histp = histptr;
|
|
return -1;
|
|
}
|
|
|
|
/* return position of first match of pattern in string, else -1 */
|
|
static int
|
|
x_match(str, pat)
|
|
char *str, *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(c)
|
|
int c;
|
|
{
|
|
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);
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_mv_end(c)
|
|
int c;
|
|
{
|
|
x_goto(xep);
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_mv_begin(c)
|
|
int c;
|
|
{
|
|
x_goto(xbuf);
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_draw_line(c)
|
|
int c;
|
|
{
|
|
x_redraw(-1);
|
|
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(limit)
|
|
int limit;
|
|
{
|
|
int i, j;
|
|
char *cp;
|
|
|
|
x_adj_ok = 0;
|
|
if (limit == -1)
|
|
x_e_putc('\n');
|
|
else
|
|
x_e_putc('\r');
|
|
x_flush();
|
|
if (xbp == xbuf)
|
|
{
|
|
pprompt(prompt + prompt_skip, 0);
|
|
x_col = promptlen(prompt, (const char **) 0);
|
|
}
|
|
x_displen = xx_cols - 2 - x_col;
|
|
xlp_valid = FALSE;
|
|
cp = 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
|
|
i = limit - (xlp - xbp);
|
|
|
|
for (j = 0; j < i && x_col < (xx_cols - 2); j++)
|
|
x_e_putc(' ');
|
|
i = ' ';
|
|
if (xep > xlp) /* more off screen */
|
|
{
|
|
if (xbp > xbuf)
|
|
i = '*';
|
|
else
|
|
i = '>';
|
|
}
|
|
else
|
|
if (xbp > xbuf)
|
|
i = '<';
|
|
x_e_putc(i);
|
|
j++;
|
|
while (j--)
|
|
x_e_putc('\b');
|
|
}
|
|
for (cp = xlp; cp > xcp; )
|
|
x_bs(*--cp);
|
|
x_adj_ok = 1;
|
|
D__(x_flush();)
|
|
return;
|
|
}
|
|
|
|
static int
|
|
x_transpose(c)
|
|
int c;
|
|
{
|
|
char tmp;
|
|
|
|
/* 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 positiion:
|
|
* 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 mdoe.
|
|
* This should really be broken up into 3 functions so users can bind
|
|
* to the one they want.
|
|
*/
|
|
if (xcp == xbuf) {
|
|
x_e_putc(BEL);
|
|
return KSTD;
|
|
} else if (xcp == xep || Flag(FGMACS)) {
|
|
if (xcp - xbuf == 1) {
|
|
x_e_putc(BEL);
|
|
return KSTD;
|
|
}
|
|
/* Gosling/Unipress emacs style: Swap two characters before the
|
|
* cursor, do not change cursor position
|
|
*/
|
|
x_bs(xcp[-1]);
|
|
x_bs(xcp[-2]);
|
|
x_zotc(xcp[-1]);
|
|
x_zotc(xcp[-2]);
|
|
tmp = xcp[-1];
|
|
xcp[-1] = xcp[-2];
|
|
xcp[-2] = tmp;
|
|
} else {
|
|
/* GNU emacs style: Swap the characters before and under the
|
|
* cursor, move cursor position along one.
|
|
*/
|
|
x_bs(xcp[-1]);
|
|
x_zotc(xcp[0]);
|
|
x_zotc(xcp[-1]);
|
|
tmp = xcp[-1];
|
|
xcp[-1] = xcp[0];
|
|
xcp[0] = tmp;
|
|
x_bs(xcp[0]);
|
|
x_goto(xcp + 1);
|
|
}
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_literal(c)
|
|
int c;
|
|
{
|
|
x_curprefix = -1;
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_meta1(c)
|
|
int c;
|
|
{
|
|
x_curprefix = 1;
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_meta2(c)
|
|
int c;
|
|
{
|
|
x_curprefix = 2;
|
|
return KSTD;
|
|
}
|
|
|
|
#ifdef OS2
|
|
static int
|
|
x_meta3(c)
|
|
int c;
|
|
{
|
|
x_curprefix = 3;
|
|
return KSTD;
|
|
}
|
|
#endif /* OS2 */
|
|
|
|
static int
|
|
x_kill(c)
|
|
int c;
|
|
{
|
|
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(nchars)
|
|
int nchars;
|
|
{
|
|
char *cp = str_nsave(xcp, nchars, AEDIT);
|
|
if (killstack[killsp])
|
|
afree((void *)killstack[killsp], AEDIT);
|
|
killstack[killsp] = cp;
|
|
killsp = (killsp + 1) % KILLSIZE;
|
|
}
|
|
|
|
static int
|
|
x_yank(c)
|
|
int c;
|
|
{
|
|
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(c)
|
|
int c;
|
|
{
|
|
int len;
|
|
if (x_last_command != XFUNC_yank && x_last_command != XFUNC_meta_yank) {
|
|
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(c)
|
|
int c;
|
|
{
|
|
/* x_zotc(c); */
|
|
xlp = xep = xcp = xbp = xbuf;
|
|
xlp_valid = TRUE;
|
|
*xcp = 0;
|
|
return KINTR;
|
|
}
|
|
|
|
static int
|
|
x_error(c)
|
|
int c;
|
|
{
|
|
x_e_putc(BEL);
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_stuffreset(c)
|
|
int c;
|
|
{
|
|
#ifdef TIOCSTI
|
|
(void)x_stuff(c);
|
|
return KINTR;
|
|
#else
|
|
x_zotc(c);
|
|
xlp = xcp = xep = xbp = xbuf;
|
|
xlp_valid = TRUE;
|
|
*xcp = 0;
|
|
x_redraw(-1);
|
|
return KSTD;
|
|
#endif
|
|
}
|
|
|
|
static int
|
|
x_stuff(c)
|
|
int c;
|
|
{
|
|
#if 0 || defined TIOCSTI
|
|
char ch = c;
|
|
bool_t savmode = x_mode(FALSE);
|
|
|
|
(void)ioctl(TTY, TIOCSTI, &ch);
|
|
(void)x_mode(savmode);
|
|
x_redraw(-1);
|
|
#endif
|
|
return KSTD;
|
|
}
|
|
|
|
static char *
|
|
x_mapin(cp)
|
|
const char *cp;
|
|
{
|
|
char *new, *op;
|
|
|
|
op = new = str_save(cp, ATEMP);
|
|
while (*cp) {
|
|
/* XXX -- should handle \^ escape? */
|
|
if (*cp == '^') {
|
|
cp++;
|
|
#ifdef OS2
|
|
if (*cp == '0') /* To define function keys */
|
|
*op++ = 0xE0;
|
|
else
|
|
#endif /* OS2 */
|
|
if (*cp >= '?') /* includes '?'; ASCII */
|
|
*op++ = CTRL(*cp);
|
|
else {
|
|
*op++ = '^';
|
|
cp--;
|
|
}
|
|
} else
|
|
*op++ = *cp;
|
|
cp++;
|
|
}
|
|
*op = '\0';
|
|
|
|
return new;
|
|
}
|
|
|
|
static char *
|
|
x_mapout(c)
|
|
int c;
|
|
{
|
|
static char buf[8];
|
|
register char *p = buf;
|
|
|
|
if (c < ' ' || c == 0x7F) { /* ASCII */
|
|
*p++ = '^';
|
|
*p++ = (c == 0x7F) ? '?' : (c | 0x40);
|
|
#ifdef OS2
|
|
} else if (c == 0xE0) {
|
|
*p++ = '^';
|
|
*p++ = '0';
|
|
#endif /* OS2 */
|
|
} else
|
|
*p++ = c;
|
|
*p = 0;
|
|
return buf;
|
|
}
|
|
|
|
static void
|
|
x_print(prefix, key)
|
|
int prefix, key;
|
|
{
|
|
if (prefix == 1)
|
|
shprintf("%s", x_mapout(x_prefix1));
|
|
if (prefix == 2)
|
|
shprintf("%s", x_mapout(x_prefix2));
|
|
#ifdef OS2
|
|
if (prefix == 3)
|
|
shprintf("%s", x_mapout(x_prefix3));
|
|
#endif /* OS2 */
|
|
shprintf("%s = ", x_mapout(key));
|
|
if (x_tab[prefix][key] != XFUNC_ins_string)
|
|
shprintf("%s\n", x_ftab[x_tab[prefix][key]].xf_name);
|
|
else
|
|
shprintf("'%s'\n", x_atab[prefix][key]);
|
|
}
|
|
|
|
int
|
|
x_bind(a1, a2, macro, list)
|
|
const char *a1, *a2;
|
|
int macro; /* bind -m */
|
|
int list; /* bind -l */
|
|
{
|
|
Findex f;
|
|
int prefix, key;
|
|
char *sp = NULL;
|
|
char *m1, *m2;
|
|
|
|
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];
|
|
if (f == XFUNC_insert || f == XFUNC_error
|
|
|| (macro && f != XFUNC_ins_string))
|
|
continue;
|
|
x_print(prefix, key);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
m1 = x_mapin(a1);
|
|
prefix = key = 0;
|
|
for (;; m1++) {
|
|
key = *m1 & CHARMASK;
|
|
if (x_tab[prefix][key] == XFUNC_meta1)
|
|
prefix = 1;
|
|
else if (x_tab[prefix][key] == XFUNC_meta2)
|
|
prefix = 2;
|
|
#ifdef OS2
|
|
else if (x_tab[prefix][key] == XFUNC_meta3)
|
|
prefix = 3;
|
|
#endif /* OS2 */
|
|
else
|
|
break;
|
|
}
|
|
|
|
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;
|
|
}
|
|
#if 0 /* This breaks the bind commands that map arrow keys */
|
|
if (f == XFUNC_meta1)
|
|
x_prefix1 = key;
|
|
if (f == XFUNC_meta2)
|
|
x_prefix2 = key;
|
|
#endif /* 0 */
|
|
} else {
|
|
f = XFUNC_ins_string;
|
|
m2 = x_mapin(a2);
|
|
sp = str_save(m2, AEDIT);
|
|
}
|
|
|
|
if (x_tab[prefix][key] == XFUNC_ins_string && x_atab[prefix][key])
|
|
afree((void *)x_atab[prefix][key], AEDIT);
|
|
x_tab[prefix][key] = f;
|
|
x_atab[prefix][key] = sp;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
x_init_emacs()
|
|
{
|
|
register int i, j;
|
|
|
|
ainit(AEDIT);
|
|
x_nextcmd = -1;
|
|
|
|
x_tab = (Findex (*)[X_TABSZ]) alloc(sizeofN(*x_tab, X_NTABS), 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 < NELEM(x_defbindings); i++)
|
|
x_tab[x_defbindings[i].xdb_tab][x_defbindings[i].xdb_char]
|
|
= x_defbindings[i].xdb_func;
|
|
|
|
x_atab = (char *(*)[X_TABSZ]) alloc(sizeofN(*x_atab, X_NTABS), AEDIT);
|
|
for (i = 1; i < X_NTABS; i++)
|
|
for (j = 0; j < X_TABSZ; j++)
|
|
x_atab[i][j] = NULL;
|
|
}
|
|
|
|
void
|
|
x_emacs_keys(ec)
|
|
X_chars *ec;
|
|
{
|
|
x_tab[0][ec->erase] = XFUNC_del_back;
|
|
x_tab[0][ec->kill] = XFUNC_del_line;
|
|
x_tab[0][ec->werase] = XFUNC_del_bword;
|
|
x_tab[0][ec->intr] = XFUNC_abort;
|
|
x_tab[0][ec->quit] = XFUNC_noop;
|
|
x_tab[1][ec->erase] = XFUNC_del_bword;
|
|
}
|
|
|
|
static int
|
|
x_set_mark(c)
|
|
int c;
|
|
{
|
|
xmp = xcp;
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_kill_region(c)
|
|
int c;
|
|
{
|
|
int rsize;
|
|
char *xr;
|
|
|
|
if (xmp == NULL) {
|
|
x_e_putc(BEL);
|
|
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(c)
|
|
int c;
|
|
{
|
|
char *tmp;
|
|
|
|
if (xmp == NULL) {
|
|
x_e_putc(BEL);
|
|
return KSTD;
|
|
}
|
|
tmp = xmp;
|
|
xmp = xcp;
|
|
x_goto( tmp );
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_version(c)
|
|
int c;
|
|
{
|
|
char *o_xbuf = xbuf, *o_xend = xend;
|
|
char *o_xbp = xbp, *o_xep = xep, *o_xcp = xcp;
|
|
int lim = x_lastcp() - xbp;
|
|
|
|
xbuf = xbp = xcp = (char *) ksh_version + 4;
|
|
xend = xep = (char *) ksh_version + 4 + strlen(ksh_version + 4);
|
|
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(strlen(ksh_version));
|
|
|
|
if (c < 0)
|
|
return KSTD;
|
|
/* This is what at&t ksh seems to do... Very bizarre */
|
|
if (c != ' ')
|
|
x_e_ungetc(c);
|
|
|
|
return KSTD;
|
|
}
|
|
|
|
static int
|
|
x_noop(c)
|
|
int c;
|
|
{
|
|
return KSTD;
|
|
}
|
|
|
|
#ifdef SILLY
|
|
static int
|
|
x_game_of_life(c)
|
|
int c;
|
|
{
|
|
char newbuf [256+1];
|
|
register char *ip, *op;
|
|
int i, len;
|
|
|
|
i = xep - xbuf;
|
|
*xep = 0;
|
|
len = x_size_str(xbuf);
|
|
xcp = xbp = xbuf;
|
|
memmove(newbuf+1, xbuf, i);
|
|
newbuf[0] = 'A';
|
|
newbuf[i] = 'A';
|
|
for (ip = newbuf+1, op = xbuf; --i >= 0; ip++, op++) {
|
|
/* Empty space */
|
|
if (*ip < '@' || *ip == '_' || *ip == 0x7F) {
|
|
/* Two adults, make whoopee */
|
|
if (ip[-1] < '_' && ip[1] < '_') {
|
|
/* Make kid look like parents. */
|
|
*op = '`' + ((ip[-1] + ip[1])/2)%32;
|
|
if (*op == 0x7F) /* Birth defect */
|
|
*op = '`';
|
|
}
|
|
else
|
|
*op = ' '; /* nothing happens */
|
|
continue;
|
|
}
|
|
/* Child */
|
|
if (*ip > '`') {
|
|
/* All alone, dies */
|
|
if (ip[-1] == ' ' && ip[1] == ' ')
|
|
*op = ' ';
|
|
else /* Gets older */
|
|
*op = *ip-'`'+'@';
|
|
continue;
|
|
}
|
|
/* Adult */
|
|
/* Overcrowded, dies */
|
|
if (ip[-1] >= '@' && ip[1] >= '@') {
|
|
*op = ' ';
|
|
continue;
|
|
}
|
|
*op = *ip;
|
|
}
|
|
*op = 0;
|
|
x_redraw(len);
|
|
return KSTD;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* File/command name completion routines
|
|
*/
|
|
|
|
|
|
static int
|
|
x_comp_comm(c)
|
|
int c;
|
|
{
|
|
do_complete(XCF_COMMAND, CT_COMPLETE);
|
|
return KSTD;
|
|
}
|
|
static int
|
|
x_list_comm(c)
|
|
int c;
|
|
{
|
|
do_complete(XCF_COMMAND, CT_LIST);
|
|
return KSTD;
|
|
}
|
|
static int
|
|
x_complete(c)
|
|
int c;
|
|
{
|
|
do_complete(XCF_COMMAND_FILE, CT_COMPLETE);
|
|
return KSTD;
|
|
}
|
|
static int
|
|
x_enumerate(c)
|
|
int c;
|
|
{
|
|
do_complete(XCF_COMMAND_FILE, CT_LIST);
|
|
return KSTD;
|
|
}
|
|
static int
|
|
x_comp_file(c)
|
|
int c;
|
|
{
|
|
do_complete(XCF_FILE, CT_COMPLETE);
|
|
return KSTD;
|
|
}
|
|
static int
|
|
x_list_file(c)
|
|
int c;
|
|
{
|
|
do_complete(XCF_FILE, CT_LIST);
|
|
return KSTD;
|
|
}
|
|
static int
|
|
x_comp_list(c)
|
|
int c;
|
|
{
|
|
do_complete(XCF_COMMAND_FILE, CT_COMPLIST);
|
|
return KSTD;
|
|
}
|
|
static int
|
|
x_expand(c)
|
|
int c;
|
|
{
|
|
char **words;
|
|
int nwords = 0;
|
|
int start, end;
|
|
int is_command;
|
|
int i;
|
|
|
|
nwords = x_cf_glob(XCF_FILE,
|
|
xbuf, xep - xbuf, xcp - xbuf,
|
|
&start, &end, &words, &is_command);
|
|
|
|
if (nwords == 0) {
|
|
x_e_putc(BEL);
|
|
return KSTD;
|
|
}
|
|
|
|
x_goto(xbuf + start);
|
|
x_delete(end - start, FALSE);
|
|
for (i = 0; i < nwords; i++)
|
|
if (x_ins(words[i]) < 0 || (i < nwords - 1 && x_ins(space) < 0))
|
|
{
|
|
x_e_putc(BEL);
|
|
return KSTD;
|
|
}
|
|
|
|
return KSTD;
|
|
}
|
|
|
|
/* type == 0 for list, 1 for complete and 2 for complete-list */
|
|
static void
|
|
do_complete(flags, type)
|
|
int flags; /* XCF_{COMMAND,FILE,COMMAND_FILE} */
|
|
Comp_type type;
|
|
{
|
|
char **words;
|
|
int nwords = 0;
|
|
int start, end;
|
|
int is_command;
|
|
int do_glob = 1;
|
|
Comp_type t = type;
|
|
char *comp_word = (char *) 0;
|
|
|
|
if (type == CT_COMPLIST) {
|
|
do_glob = 0;
|
|
/* decide what we will do */
|
|
nwords = x_cf_glob(flags,
|
|
xbuf, xep - xbuf, xcp - xbuf,
|
|
&start, &end, &words, &is_command);
|
|
if (nwords > 0) {
|
|
if (nwords > 1) {
|
|
int len = x_longest_prefix(nwords, words);
|
|
|
|
t = CT_LIST;
|
|
/* Do completion if prefix matches original
|
|
* prefix (ie, no globbing chars), otherwise
|
|
* don't bother
|
|
*/
|
|
if (strncmp(words[0], xbuf + start, end - start)
|
|
== 0)
|
|
comp_word = str_nsave(words[0], len,
|
|
ATEMP);
|
|
else
|
|
type = CT_LIST;
|
|
/* Redo globing to show full paths if this
|
|
* is a command.
|
|
*/
|
|
if (is_command) {
|
|
do_glob = 1;
|
|
x_free_words(nwords, words);
|
|
}
|
|
} else
|
|
type = t = CT_COMPLETE;
|
|
}
|
|
}
|
|
if (do_glob)
|
|
nwords = x_cf_glob(flags | (t == CT_LIST ? XCF_FULLPATH : 0),
|
|
xbuf, xep - xbuf, xcp - xbuf,
|
|
&start, &end, &words, &is_command);
|
|
if (nwords == 0) {
|
|
x_e_putc(BEL);
|
|
return;
|
|
}
|
|
switch (type) {
|
|
case CT_LIST:
|
|
x_print_expansions(nwords, words, is_command);
|
|
x_redraw(0);
|
|
break;
|
|
|
|
case CT_COMPLIST:
|
|
/* Only get here if nwords > 1 && comp_word is set */
|
|
{
|
|
int olen = end - start;
|
|
int nlen = strlen(comp_word);
|
|
|
|
x_print_expansions(nwords, words, is_command);
|
|
xcp = xbuf + end;
|
|
x_do_ins(comp_word + olen, nlen - olen);
|
|
x_redraw(0);
|
|
}
|
|
break;
|
|
|
|
case CT_COMPLETE:
|
|
{
|
|
int nlen = x_longest_prefix(nwords, words);
|
|
|
|
if (nlen > 0) {
|
|
x_goto(xbuf + start);
|
|
x_delete(end - start, FALSE);
|
|
words[0][nlen] = '\0';
|
|
x_ins(words[0]);
|
|
/* If single match is not a directory, add a
|
|
* space to the end...
|
|
*/
|
|
if (nwords == 1
|
|
&& !ISDIRSEP(words[0][nlen - 1]))
|
|
x_ins(space);
|
|
} else
|
|
x_e_putc(BEL);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* 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()
|
|
{
|
|
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;
|
|
xlp_valid = FALSE;
|
|
x_redraw(xx_cols);
|
|
x_flush();
|
|
}
|
|
|
|
static int unget_char = -1;
|
|
|
|
static void
|
|
x_e_ungetc(c)
|
|
int c;
|
|
{
|
|
unget_char = c;
|
|
}
|
|
|
|
static int
|
|
x_e_getc()
|
|
{
|
|
int c;
|
|
|
|
if (unget_char >= 0) {
|
|
c = unget_char;
|
|
unget_char = -1;
|
|
} else {
|
|
if (macroptr) {
|
|
c = *macroptr++;
|
|
if (!*macroptr)
|
|
macroptr = (char *) 0;
|
|
} else
|
|
c = x_getc();
|
|
}
|
|
|
|
return c <= CHARMASK ? c : (c & CHARMASK);
|
|
}
|
|
|
|
static void
|
|
x_e_putc(c)
|
|
int c;
|
|
{
|
|
if (c == '\r' || c == '\n')
|
|
x_col = 0;
|
|
if (x_col < xx_cols)
|
|
{
|
|
x_putc(c);
|
|
switch(c)
|
|
{
|
|
case BEL:
|
|
break;
|
|
case '\r':
|
|
case '\n':
|
|
break;
|
|
case '\b':
|
|
x_col--;
|
|
break;
|
|
default:
|
|
x_col++;
|
|
break;
|
|
}
|
|
}
|
|
if (x_adj_ok && (x_col < 0 || x_col >= (xx_cols - 2)))
|
|
{
|
|
x_adjust();
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
static int
|
|
x_debug_info(c)
|
|
int c;
|
|
{
|
|
x_flush();
|
|
shellf("\nksh debug:\n");
|
|
shellf("\tx_col == %d,\t\tx_cols == %d,\tx_displen == %d\n",
|
|
x_col, xx_cols, x_displen);
|
|
shellf("\txcp == 0x%lx,\txep == 0x%lx\n", (long) xcp, (long) xep);
|
|
shellf("\txbp == 0x%lx,\txbuf == 0x%lx\n", (long) xbp, (long) xbuf);
|
|
shellf("\txlp == 0x%lx\n", (long) xlp);
|
|
shellf("\txlp == 0x%lx\n", (long) x_lastcp());
|
|
shellf(newline);
|
|
x_redraw(-1);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
x_e_puts(s)
|
|
const char *s;
|
|
{
|
|
register int adj = x_adj_done;
|
|
|
|
while (*s && adj == x_adj_done)
|
|
x_e_putc(*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(c)
|
|
int c;
|
|
{
|
|
int n = 0;
|
|
int first = 1;
|
|
|
|
c &= CHARMASK; /* strip command prefix */
|
|
for (; c >= 0 && isdigit(c); c = x_e_getc(), first = 0)
|
|
n = n * 10 + (c - '0');
|
|
if (c < 0 || first) {
|
|
x_e_putc(BEL);
|
|
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(c)
|
|
int c;
|
|
{
|
|
int oldsize = x_size_str(xbuf);
|
|
int len = xep - xbuf;
|
|
int ret = x_do_comment(xbuf, xend - xbuf, &len);
|
|
|
|
if (ret < 0)
|
|
x_e_putc(BEL);
|
|
else {
|
|
xep = xbuf + len;
|
|
*xep = '\0';
|
|
xcp = xbp = xbuf;
|
|
x_redraw(oldsize);
|
|
if (ret > 0)
|
|
return x_newline('\n');
|
|
}
|
|
return KSTD;
|
|
}
|
|
|
|
|
|
/* 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.
|
|
*
|
|
* Bound to M-.
|
|
*
|
|
* RETURN VALUE:
|
|
* KSTD
|
|
*/
|
|
|
|
static int
|
|
x_prev_histword(c)
|
|
int c;
|
|
{
|
|
register char *rcp;
|
|
char *cp;
|
|
char **hp;
|
|
|
|
hp = x_histp-1;
|
|
if (hp < history || hp > histptr)
|
|
{
|
|
x_e_putc(BEL);
|
|
return KSTD;
|
|
}
|
|
cp = *hp;
|
|
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 {
|
|
int c;
|
|
|
|
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++;
|
|
c = *rcp;
|
|
*rcp = '\0';
|
|
x_ins(cp);
|
|
*rcp = c;
|
|
}
|
|
return KSTD;
|
|
}
|
|
|
|
/* Uppercase N(1) words */
|
|
static int
|
|
x_fold_upper(c)
|
|
int c;
|
|
{
|
|
return x_fold_case('U');
|
|
}
|
|
|
|
/* Lowercase N(1) words */
|
|
static int
|
|
x_fold_lower(c)
|
|
int c;
|
|
{
|
|
return x_fold_case('L');
|
|
}
|
|
|
|
/* Lowercase N(1) words */
|
|
static int
|
|
x_fold_capitialize(c)
|
|
int c;
|
|
{
|
|
return x_fold_case('C');
|
|
}
|
|
|
|
/* NAME:
|
|
* x_fold_case - convert word to UPPER/lower/Capitial 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 Capitalize words.
|
|
*
|
|
* RETURN VALUE:
|
|
* None
|
|
*/
|
|
|
|
static int
|
|
x_fold_case(c)
|
|
int c;
|
|
{
|
|
char *cp = xcp;
|
|
|
|
if (cp == xep) {
|
|
x_e_putc(BEL);
|
|
return KSTD;
|
|
}
|
|
while (x_arg--) {
|
|
/*
|
|
* fisrt 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 */
|
|
if (isupper(*cp))
|
|
*cp = tolower(*cp);
|
|
} else { /* uppercase, capitialize */
|
|
if (islower(*cp))
|
|
*cp = toupper(*cp);
|
|
}
|
|
cp++;
|
|
}
|
|
/*
|
|
* now for the rest of the word
|
|
*/
|
|
while (cp != xep && !is_mfs(*cp)) {
|
|
if (c == 'U') { /* uppercase */
|
|
if (islower(*cp))
|
|
*cp = toupper(*cp);
|
|
} else { /* lowercase, capitialize */
|
|
if (isupper(*cp))
|
|
*cp = tolower(*cp);
|
|
}
|
|
cp++;
|
|
}
|
|
}
|
|
x_goto(cp);
|
|
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:
|
|
*
|
|
* for (cp = x_lastcp(); cp > xcp; cp)
|
|
* x_bs(*--cp);
|
|
*
|
|
* Will position the cursor correctly on the screen.
|
|
*
|
|
* RETURN VALUE:
|
|
* cp or NULL
|
|
*/
|
|
|
|
static char *
|
|
x_lastcp()
|
|
{
|
|
register char *rcp;
|
|
register int i;
|
|
|
|
if (!xlp_valid)
|
|
{
|
|
for (i = 0, rcp = xbp; rcp < xep && i < x_displen; rcp++)
|
|
i += x_size(*rcp);
|
|
xlp = rcp;
|
|
}
|
|
xlp_valid = TRUE;
|
|
return (xlp);
|
|
}
|
|
|
|
#endif /* EDIT */
|