/* * Extended (M-X) commands, rebinding, and * startup file processing. */ #include "def.h" #include "kbd.h" #ifndef NO_MACRO #include "macro.h" #endif #ifdef FKEYS #include "key.h" #ifndef NO_STARTUP #ifndef BINDKEY #define BINDKEY /* bindkey is used by FKEYS startup code */ #endif #endif #endif extern int rescan(); /* insert a string, mainly for use from macros (created by selfinsert) */ /*ARGSUSED*/ insert(f, n) int f, n; { register char *cp; char buf[128]; #ifndef NO_MACRO register int count; int c; if(inmacro) { while(--n >= 0) { for(count = 0; count < maclcur->l_used; count++) { if((((c=maclcur->l_text[count]) == '\n') ? lnewline() : linsert(1, c)) != TRUE) return FALSE; } } maclcur = maclcur->l_fp; return TRUE; } if(n==1) thisflag |= CFINS; /* CFINS means selfinsert can tack on end */ #endif if(eread("Insert: ", buf, sizeof(buf), EFNEW) == FALSE) return FALSE; while(--n >= 0) { cp = buf; while(*cp) { if(((*cp == '\n') ? lnewline() : linsert(1, *cp)) != TRUE) return FALSE; cp++; } } return TRUE; } /* * Bind a key to a function. Cases range from the trivial (replacing an * existing binding) to the extremly complex (creating a new prefix in a * map_element that already has one, so the map_element must be split, * but the keymap doesn't have enough room for another map_element, so * the keymap is reallocated). No attempt is made to reclaim space no * longer used, if this is a problem flags must be added to indicate * malloced verses static storage in both keymaps and map_elements. * Structure assignments would come in real handy, but K&R based compilers * don't have them. Care is taken so running out of memory will leave * the keymap in a usable state. */ static int remap(curmap, c, funct, pref_map) register KEYMAP *curmap;/* pointer to the map being changed */ int c; /* character being changed */ PF funct; /* function being changed to */ KEYMAP *pref_map; /* if funct==prefix, map to bind to or NULL for new */ /* extern MAP_ELEMENT *ele; must be set before calling */ { register int i; int n1, n2, nold; KEYMAP *mp; PF *pfp; MAP_ELEMENT *mep; static KEYMAP *realocmap(); if(ele >= &curmap->map_element[curmap->map_num] || c < ele->k_base) { if(ele > &curmap->map_element[0] && (funct!=prefix || (ele-1)->k_prefmap==NULL)) { n1 = c - (ele-1)->k_num; } else n1 = HUGE; if(ele < &curmap->map_element[curmap->map_num] && (funct!=prefix || ele->k_prefmap==NULL)) { n2 = ele->k_base - c; } else n2 = HUGE; if(n1 <= MAPELEDEF && n1 <= n2) { ele--; if((pfp = (PF *)malloc((unsigned)(c - ele->k_base+1) * sizeof(PF))) == NULL) { ewprintf("Out of memory"); return FALSE; } nold = ele->k_num - ele->k_base + 1; for(i=0; i < nold; i++) pfp[i] = ele->k_funcp[i]; while(--n1) pfp[i++] = curmap->map_default; pfp[i] = funct; ele->k_num = c; ele->k_funcp = pfp; } else if(n2 <= MAPELEDEF) { if((pfp = (PF *)malloc((unsigned)(ele->k_num - c + 1) * sizeof(PF))) == NULL) { ewprintf("Out of memory"); return FALSE; } nold = ele->k_num - ele->k_base + 1; for(i=0; i < nold; i++) pfp[i+n2] = ele->k_funcp[i]; while(--n2) pfp[n2] = curmap->map_default; pfp[0] = funct; ele->k_base = c; ele->k_funcp = pfp; } else { if(curmap->map_num >= curmap->map_max && (curmap = realocmap(curmap)) == NULL) return FALSE; if((pfp = (PF *)malloc(sizeof(PF))) == NULL) { ewprintf("Out of memory"); return FALSE; } pfp[0] = funct; for(mep = &curmap->map_element[curmap->map_num]; mep > ele; mep--) { mep->k_base = (mep-1)->k_base; mep->k_num = (mep-1)->k_num; mep->k_funcp = (mep-1)->k_funcp; mep->k_prefmap = (mep-1)->k_prefmap; } ele->k_base = c; ele->k_num = c; ele->k_funcp = pfp; ele->k_prefmap = NULL; curmap->map_num++; } if(funct == prefix) { if(pref_map != NULL) { ele->k_prefmap = pref_map; } else { if((mp = (KEYMAP *)malloc(sizeof(KEYMAP) + (MAPINIT-1)*sizeof(MAP_ELEMENT))) == NULL) { ewprintf("Out of memory"); ele->k_funcp[c - ele->k_base] = curmap->map_default; return FALSE; } mp->map_num = 0; mp->map_max = MAPINIT; mp->map_default = rescan; ele->k_prefmap = mp; } } } else { n1 = c - ele->k_base; if(ele->k_funcp[n1] == funct && (funct!=prefix || pref_map==NULL || pref_map==ele->k_prefmap)) return TRUE; /* no change */ if(funct!=prefix || ele->k_prefmap==NULL) { if(ele->k_funcp[n1] == prefix) ele->k_prefmap = (KEYMAP *)NULL; ele->k_funcp[n1] = funct; /* easy case */ if(funct==prefix) { if(pref_map!=NULL) ele->k_prefmap = pref_map; else { if((mp = (KEYMAP *)malloc(sizeof(KEYMAP) + (MAPINIT-1)*sizeof(MAP_ELEMENT))) == NULL) { ewprintf("Out of memory"); ele->k_funcp[c - ele->k_base] = curmap->map_default; return FALSE; } mp->map_num = 0; mp->map_max = MAPINIT; mp->map_default = rescan; ele->k_prefmap = mp; } } } else { /* this case is the splits */ /* determine which side of the break c goes on */ /* 0 = after break; 1 = before break */ n2 = 1; for(i=0; n2 && i < n1; i++) n2 &= ele->k_funcp[i] != prefix; if(curmap->map_num >= curmap->map_max && (curmap = realocmap(curmap)) == NULL) return FALSE; if((pfp = (PF *)malloc((unsigned)(ele->k_num - c + !n2) * sizeof(PF))) == NULL) { ewprintf("Out of memory"); return FALSE; } ele->k_funcp[n1] = prefix; for(i=n1+n2; i <= ele->k_num - ele->k_base; i++) pfp[i-n1-n2] = ele->k_funcp[i]; for(mep = &curmap->map_element[curmap->map_num]; mep > ele; mep--) { mep->k_base = (mep-1)->k_base; mep->k_num = (mep-1)->k_num; mep->k_funcp = (mep-1)->k_funcp; mep->k_prefmap = (mep-1)->k_prefmap; } ele->k_num = c - !n2; (ele+1)->k_base = c + n2; (ele+1)->k_funcp = pfp; ele += !n2; ele->k_prefmap = NULL; curmap->map_num++; if(pref_map == NULL) { if((mp = (KEYMAP *)malloc(sizeof(KEYMAP) + (MAPINIT-1)*sizeof(MAP_ELEMENT))) == NULL) { ewprintf("Out of memory"); ele->k_funcp[c - ele->k_base] = curmap->map_default; return FALSE; } mp->map_num = 0; mp->map_max = MAPINIT; mp->map_default = rescan; ele->k_prefmap = mp; } else ele->k_prefmap = pref_map; } } return TRUE; } /* reallocate a keymap, used above */ static KEYMAP *realocmap(curmap) register KEYMAP *curmap; { register KEYMAP *mp; register int i; static VOID fixmap(); extern int nmaps; if((mp = (KEYMAP *)malloc((unsigned)(sizeof(KEYMAP)+ (curmap->map_max+(MAPGROW-1))*sizeof(MAP_ELEMENT)))) == NULL) { ewprintf("Out of memory"); return NULL; } mp->map_num = curmap->map_num; mp->map_max = curmap->map_max + MAPGROW; mp->map_default = curmap->map_default; for(i=curmap->map_num; i--; ) { mp->map_element[i].k_base = curmap->map_element[i].k_base; mp->map_element[i].k_num = curmap->map_element[i].k_num; mp->map_element[i].k_funcp = curmap->map_element[i].k_funcp; mp->map_element[i].k_prefmap = curmap->map_element[i].k_prefmap; } for(i=nmaps; i--; ) { if(map_table[i].p_map == curmap) map_table[i].p_map = mp; else fixmap(curmap, mp, map_table[i].p_map); } ele = &mp->map_element[ele - &curmap->map_element[0]]; return mp; } /* fix references to a reallocated keymap (recursive) */ static VOID fixmap(curmap, mp, mt) register KEYMAP *mt; register KEYMAP *curmap; KEYMAP *mp; { register int i; for(i = mt->map_num; i--; ) { if(mt->map_element[i].k_prefmap != NULL) { if(mt->map_element[i].k_prefmap == curmap) mt->map_element[i].k_prefmap = mp; else fixmap(curmap, mp, mt->map_element[i].k_prefmap); } } } /* * do the input for local-set-key, global-set-key and define-key * then call remap to do the work. */ static int dobind(curmap, p, unbind) register KEYMAP *curmap; char *p; int unbind; { PF funct; char prompt[80]; char *pep; int c; int s; KEYMAP *pref_map = NULL; #ifndef NO_MACRO if(macrodef) { /* keystrokes arn't collected. Not hard, but pretty useless */ /* would not work for function keys in any case */ ewprintf("Can't rebind key in macro"); return FALSE; } #ifndef NO_STARTUP if(inmacro) { for(s=0; s < maclcur->l_used - 1; s++) { if(doscan(curmap, c=CHARMASK(maclcur->l_text[s])) != prefix) { if(remap(curmap, c, prefix, (KEYMAP *)NULL) != TRUE) { return FALSE; } } curmap = ele->k_prefmap; } (VOID) doscan(curmap, c=maclcur->l_text[s]); maclcur = maclcur->l_fp; } else { #endif #endif (VOID) strcpy(prompt, p); pep = prompt + strlen(prompt); for(;;) { ewprintf("%s", prompt); pep[-1] = ' '; pep = keyname(pep, c = getkey(FALSE)); if(doscan(curmap,c) != prefix) break; *pep++ = '-'; *pep = '\0'; curmap = ele->k_prefmap; } #ifndef NO_STARTUP } #endif if(unbind) funct = rescan; else { if ((s=eread("%s to command: ", prompt, 80, EFFUNC|EFNEW, prompt)) != TRUE) return s; if (((funct = name_function(prompt)) == prefix) ? (pref_map = name_map(prompt)) == NULL : funct==NULL) { ewprintf("[No match]"); return FALSE; } } return remap(curmap, c, funct, pref_map); } /* * bindkey: bind key sequence to a function in * the specified map. Used by excline so it can bind function keys. * To close to release to change calling sequence, should just pass * KEYMAP *curmap rather than KEYMAP **mapp. */ #ifdef BINDKEY bindkey(mapp, fname, keys, kcount) KEYMAP **mapp; char *fname; KCHAR *keys; int kcount; { KEYMAP *curmap = *mapp; PF funct; int c; KEYMAP *pref_map = NULL; if(fname == NULL) funct = rescan; else if (((funct = name_function(fname)) == prefix) ? (pref_map = name_map(fname)) == NULL : funct==NULL) { ewprintf("[No match: %s]", fname); return FALSE; } while(--kcount) { if(doscan(curmap, c = *keys++) != prefix) { if(remap(curmap, c, prefix, (KEYMAP *)NULL) != TRUE) return FALSE; } curmap = ele->k_prefmap; } (VOID) doscan(curmap, c = *keys); return remap(curmap, c, funct, pref_map); } #ifdef FKEYS /* * Wrapper for bindkey() that converts escapes. */ int dobindkey(map, func, str) KEYMAP *map; char *func; char *str; { int i; for (i = 0; *str && i < MAXKEY; i++) { /* XXX - convert numbers w/ strol()? */ if (*str != '\\') key.k_chars[i] = *str; else { switch(*++str) { case 't': case 'T': key.k_chars[i] = '\t'; break; case 'n': case 'N': key.k_chars[i] = '\n'; break; case 'r': case 'R': key.k_chars[i] = '\r'; break; case 'e': case 'E': key.k_chars[i] = CCHR('['); break; } } str++; } key.k_count = i; return(bindkey(&map, func, key.k_chars, key.k_count)); } #endif #endif /* * This function modifies the fundamental keyboard map. */ /*ARGSUSED*/ bindtokey(f, n) { return dobind(map_table[0].p_map, "Global set key: ", FALSE); } /* * This function modifies the current mode's keyboard map. */ /*ARGSUSED*/ localbind(f, n) { return dobind(curbp->b_modes[curbp->b_nmodes]->p_map, "Local set key: ", FALSE); } /* * This function redefines a key in any keymap. */ /*ARGSUSED*/ define_key(f, n) { static char buf[48] = "Define key map: "; MAPS *mp; char *strncat(); buf[16] = '\0'; if(eread(buf, &buf[16], 48 - 16, EFNEW) != TRUE) return FALSE; if((mp = name_mode(&buf[16])) == NULL) { ewprintf("Unknown map %s", &buf[16]); return FALSE; } (VOID) strncat(&buf[16], " key: ", 48-16-1); return dobind(mp->p_map, buf, FALSE); } unbindtokey(f, n) int f, n; { return dobind(map_table[0].p_map, "Global unset key: ", TRUE); } localunbind(f, n) int f, n; { return dobind(curbp->b_modes[curbp->b_nmodes]->p_map, "Local unset key: ", TRUE); } /* * Extended command. Call the message line * routine to read in the command name and apply autocompletion * to it. When it comes back, look the name up in the symbol table * and run the command if it is found. * Print an error if there is anything wrong. */ extend(f, n) { PF funct; int s; char xname[NXNAME]; if(!(f & FFARG)) s = eread("M-x ", xname, NXNAME, EFNEW|EFFUNC); else s = eread("%d M-x ", xname, NXNAME, EFNEW|EFFUNC, n); if(s != TRUE) return s; if((funct = name_function(xname)) != NULL) { #ifndef NO_MACRO if(macrodef) { LINE *lp = maclcur; macro[macrocount-1].m_funct = funct; maclcur = lp->l_bp; maclcur->l_fp = lp->l_fp; free((char *)lp); } #endif return (*funct)(f, n); } ewprintf("[No match]"); return FALSE; } #ifndef NO_STARTUP /* * Define the commands needed to do startup-file processing. * This code is mostly a kludge just so we can get startup-file processing. * * If you're serious about having this code, you should rewrite it. * To wit: * It has lots of funny things in it to make the startup-file look * like a GNU startup file; mostly dealing with parens and semicolons. * This should all vanish. * * We define eval-expression because it's easy. It can make * *-set-key or define-key set an arbitrary key sequence, so it isn't * useless. */ /* * evalexpr - get one line from the user, and run it. */ /*ARGSUSED*/ evalexpr(f, n) { int s; char exbuf[128]; if ((s = ereply("Eval: ", exbuf, 128)) != TRUE) return s; return excline(exbuf); } /* * evalbuffer - evaluate the current buffer as line commands. Useful * for testing startup files. */ /*ARGSUSED*/ evalbuffer(f, n) { register LINE *lp; register BUFFER *bp = curbp; register int s; static char excbuf[128]; for (lp = lforw(bp->b_linep); lp != bp->b_linep; lp = lforw(lp)) { if (llength(lp) >= 128) return FALSE; (VOID) strncpy(excbuf, ltext(lp), llength(lp)); excbuf[llength(lp)] = '\0'; /* make sure it's terminated */ if ((s = excline(excbuf)) != TRUE) return s; } return TRUE; } /* * evalfile - go get a file and evaluate it as line commands. You can * go get your own startup file if need be. */ /*ARGSUSED*/ evalfile(f, n) { register int s; char fname[NFILEN]; if ((s = ereply("Load file: ", fname, NFILEN)) != TRUE) return s; return load(fname); } /* * load - go load the file name we got passed. */ load(fname) char *fname; { int s = TRUE; int nbytes; char excbuf[128]; if ((fname = adjustname(fname)) == NULL) return FALSE; /* just to be careful */ if (ffropen(fname, (BUFFER *) NULL) != FIOSUC) return FALSE; while ((s = ffgetline(excbuf, sizeof(excbuf)-1, &nbytes)) == FIOSUC) { excbuf[nbytes] = '\0'; if (excline(excbuf) != TRUE) { s = FIOERR; ewprintf("Error loading file %s", fname); break; } } (VOID) ffclose((BUFFER *) NULL); excbuf[nbytes] = '\0'; if(s!=FIOEOF || (nbytes && excline(excbuf)!=TRUE)) return FALSE; return TRUE; } /* * excline - run a line from a load file or eval-expression. * if FKEYS is defined, duplicate functionallity of dobind so function * key values don't have to fit in type char. */ excline(line) register char *line; { register char *funcp, *argp = NULL; register int c; int status; int f, n; LINE *lp, *np; PF fp; #ifdef FKEYS int bind; KEYMAP *curmap; MAPS *mp; #define BINDARG 0 /* this arg is key to bind (local/global set key) */ #define BINDNO 1 /* not binding or non-quoted BINDARG */ #define BINDNEXT 2 /* next arg " (define-key) */ #define BINDDO 3 /* already found key to bind */ #define BINDEXT 1 /* space for trailing \0 */ #else #define BINDEXT 0 #endif PF name_function(); LINE *lalloc(); static char *skipwhite(), *parsetoken(); if(macrodef || inmacro) { ewprintf("Not now!"); return FALSE; } f = 0; n = 1; funcp = skipwhite(line); if (*funcp == '\0') return TRUE; /* No error on blank lines */ line = parsetoken(funcp); if (*line != '\0') { *line++ = '\0'; line = skipwhite(line); if ((*line >= '0' && *line <= '9') || *line == '-') { argp = line; line = parsetoken(line); } } if (argp != NULL) { f = FFARG; n = atoi(argp); } if((fp = name_function(funcp)) == NULL) { ewprintf("Unknown function: %s", funcp); return FALSE; } #ifdef FKEYS if(fp == bindtokey || fp == unbindtokey) { bind = BINDARG; curmap = map_table[0].p_map; } else if(fp == localbind || fp == localunbind) { bind = BINDARG; curmap = curbp->b_modes[curbp->b_nmodes]->p_map; } else if(fp == define_key) bind = BINDNEXT; else bind = BINDNO; #endif /* Pack away all the args now... */ if((np = lalloc(0))==FALSE) return FALSE; np->l_fp = np->l_bp = maclcur = np; while (*line != '\0') { argp = skipwhite(line); if (*argp == '\0') break; line = parsetoken(argp); if (*argp != '"') { if (*argp == '\'') ++argp; if((lp = lalloc((int)(line-argp)+BINDEXT))==NULL) { status = FALSE; goto cleanup; } bcopy(argp, ltext(lp), (int)(line-argp)); #ifdef FKEYS lp->l_used--; /* don't count BINDEXT! */ if(bind == BINDARG) bind = BINDNO; #endif } else { /* Quoted strings special */ ++argp; #ifdef FKEYS if(bind != BINDARG) { #endif if((lp = lalloc((int)(line-argp)+BINDEXT))==NULL) { status = FALSE; goto cleanup; } lp->l_used = 0; #ifdef FKEYS } else { key.k_count = 0; } #endif while (*argp != '"' && *argp != '\0') { if (*argp != '\\') c = *argp++; else { switch(*++argp) { case 't': case 'T': c = CCHR('I'); break; case 'n': case 'N': c = CCHR('J'); break; case 'r': case 'R': c = CCHR('M'); break; case 'e': case 'E': c = CCHR('['); break; case '^': /* split into two statements due to bug in OSK cpp */ c = CHARMASK(*++argp); c = ISLOWER(c) ? CCHR(TOUPPER(c)) : CCHR(c); break; case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': c = *argp - '0'; if(argp[1] <= '7' && argp[1] >= '0') { c <<= 3; c += *++argp - '0'; if(argp[1] <= '7' && argp[1] >= '0') { c <<= 3; c += *++argp - '0'; } } break; #ifdef FKEYS case 'f': case 'F': c = *++argp - '0'; if(ISDIGIT(argp[1])) { c *= 10; c += *++argp - '0'; } c += KFIRST; break; #endif default: c = CHARMASK(*argp); break; } argp++; } #ifdef FKEYS if(bind == BINDARG) key.k_chars[key.k_count++] = c; else #endif lp->l_text[lp->l_used++] = c; } if(*line) line++; } #ifdef FKEYS switch(bind) { case BINDARG: bind = BINDDO; break; case BINDNEXT: lp->l_text[lp->l_used] = '\0'; if((mp = name_mode(lp->l_text)) == NULL) { ewprintf("No such mode: %s", lp->l_text); status = FALSE; free((char *)lp); goto cleanup; } curmap = mp->p_map; free((char *)lp); bind = BINDARG; break; default: #endif lp->l_fp = np->l_fp; lp->l_bp = np; np->l_fp = lp; np = lp; #ifdef FKEYS } #endif } #ifdef FKEYS switch(bind) { default: ewprintf("Bad args to set key"); status = FALSE; break; case BINDDO: if(fp != unbindtokey && fp != localunbind) { lp->l_text[lp->l_used] = '\0'; status = bindkey(&curmap, lp->l_text, key.k_chars, key.k_count); } else status = bindkey(&curmap, (char *)NULL, key.k_chars, key.k_count); break; case BINDNO: #endif inmacro = TRUE; maclcur = maclcur->l_fp; status = (*fp)(f, n); inmacro = FALSE; #ifdef FKEYS } #endif cleanup: lp = maclcur->l_fp; while(lp!=maclcur) { np = lp->l_fp; free((char *)lp); lp = np; } free((char *)lp); return status; } /* * a pair of utility functions for the above */ static char * skipwhite(s) register char *s; { while(*s == ' ' || *s == '\t' || *s == ')' || *s == '(') s++; if (*s == ';') *s = '\0' ; return s; } static char * parsetoken(s) register char *s; { if (*s != '"') { while(*s && *s!=' ' && *s!='\t' && *s!=')' && *s!='(') s++; if(*s==';') *s='\0'; } else do { /* Strings get special treatment */ /* Beware: You can \ out the end of the string! */ if (*s == '\\') ++s; } while (*++s != '"' && *s != '\0'); return s; } #endif