17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*b2a1c443Svb * Common Development and Distribution License (the "License"). 6*b2a1c443Svb * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate /* 22*b2a1c443Svb * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 237c478bd9Sstevel@tonic-gate * Use is subject to license terms. 247c478bd9Sstevel@tonic-gate */ 257c478bd9Sstevel@tonic-gate 267c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 277c478bd9Sstevel@tonic-gate 287c478bd9Sstevel@tonic-gate /* 297c478bd9Sstevel@tonic-gate * The MDB command buffer is a simple structure that keeps track of the 307c478bd9Sstevel@tonic-gate * command history list, and provides operations to manipulate the current 317c478bd9Sstevel@tonic-gate * buffer according to the various emacs editing options. The terminal 327c478bd9Sstevel@tonic-gate * code uses this code to keep track of the actual contents of the command 337c478bd9Sstevel@tonic-gate * line, and then uses this content to perform redraw operations. 347c478bd9Sstevel@tonic-gate */ 357c478bd9Sstevel@tonic-gate 367c478bd9Sstevel@tonic-gate #include <strings.h> 377c478bd9Sstevel@tonic-gate #include <stdio.h> 387c478bd9Sstevel@tonic-gate #include <ctype.h> 397c478bd9Sstevel@tonic-gate 407c478bd9Sstevel@tonic-gate #include <mdb/mdb_modapi.h> 417c478bd9Sstevel@tonic-gate #include <mdb/mdb_cmdbuf.h> 427c478bd9Sstevel@tonic-gate #include <mdb/mdb_debug.h> 437c478bd9Sstevel@tonic-gate #include <mdb/mdb.h> 447c478bd9Sstevel@tonic-gate 457c478bd9Sstevel@tonic-gate #define CMDBUF_LINELEN BUFSIZ /* Length of each buffer line */ 467c478bd9Sstevel@tonic-gate #define CMDBUF_TABLEN 8 /* Length of a tab in spaces */ 477c478bd9Sstevel@tonic-gate 487c478bd9Sstevel@tonic-gate static void 497c478bd9Sstevel@tonic-gate cmdbuf_shiftr(mdb_cmdbuf_t *cmd, size_t nbytes) 507c478bd9Sstevel@tonic-gate { 517c478bd9Sstevel@tonic-gate bcopy(&cmd->cmd_buf[cmd->cmd_bufidx], 527c478bd9Sstevel@tonic-gate &cmd->cmd_buf[cmd->cmd_bufidx + nbytes], 537c478bd9Sstevel@tonic-gate cmd->cmd_buflen - cmd->cmd_bufidx); 547c478bd9Sstevel@tonic-gate } 557c478bd9Sstevel@tonic-gate 56*b2a1c443Svb static void 57*b2a1c443Svb mdb_cmdbuf_allocchunk(mdb_cmdbuf_t *cmd) 58*b2a1c443Svb { 59*b2a1c443Svb int i; 60*b2a1c443Svb char **newhistory; 61*b2a1c443Svb ssize_t newhalloc = cmd->cmd_halloc + MDB_DEF_HISTLEN; 62*b2a1c443Svb 63*b2a1c443Svb if (newhalloc > cmd->cmd_histlen) 64*b2a1c443Svb newhalloc = cmd->cmd_histlen; 65*b2a1c443Svb newhistory = mdb_alloc(newhalloc * sizeof (char *), UM_SLEEP); 66*b2a1c443Svb bcopy(cmd->cmd_history, newhistory, cmd->cmd_halloc * sizeof (char *)); 67*b2a1c443Svb mdb_free(cmd->cmd_history, cmd->cmd_halloc * sizeof (char *)); 68*b2a1c443Svb for (i = cmd->cmd_halloc; i < newhalloc; i++) 69*b2a1c443Svb newhistory[i] = mdb_alloc(CMDBUF_LINELEN, UM_SLEEP); 70*b2a1c443Svb cmd->cmd_history = newhistory; 71*b2a1c443Svb cmd->cmd_halloc = newhalloc; 72*b2a1c443Svb } 73*b2a1c443Svb 747c478bd9Sstevel@tonic-gate void 757c478bd9Sstevel@tonic-gate mdb_cmdbuf_create(mdb_cmdbuf_t *cmd) 767c478bd9Sstevel@tonic-gate { 777c478bd9Sstevel@tonic-gate size_t i; 787c478bd9Sstevel@tonic-gate 79*b2a1c443Svb cmd->cmd_halloc = MDB_DEF_HISTLEN < mdb.m_histlen ? 80*b2a1c443Svb MDB_DEF_HISTLEN : mdb.m_histlen; 81*b2a1c443Svb 82*b2a1c443Svb cmd->cmd_history = mdb_alloc(cmd->cmd_halloc * sizeof (char *), 83*b2a1c443Svb UM_SLEEP); 847c478bd9Sstevel@tonic-gate cmd->cmd_linebuf = mdb_alloc(CMDBUF_LINELEN, UM_SLEEP); 857c478bd9Sstevel@tonic-gate 86*b2a1c443Svb for (i = 0; i < cmd->cmd_halloc; i++) 877c478bd9Sstevel@tonic-gate cmd->cmd_history[i] = mdb_alloc(CMDBUF_LINELEN, UM_SLEEP); 887c478bd9Sstevel@tonic-gate 897c478bd9Sstevel@tonic-gate cmd->cmd_buf = cmd->cmd_history[0]; 907c478bd9Sstevel@tonic-gate cmd->cmd_linelen = CMDBUF_LINELEN; 917c478bd9Sstevel@tonic-gate cmd->cmd_histlen = mdb.m_histlen; 927c478bd9Sstevel@tonic-gate cmd->cmd_buflen = 0; 937c478bd9Sstevel@tonic-gate cmd->cmd_bufidx = 0; 947c478bd9Sstevel@tonic-gate cmd->cmd_hold = 0; 957c478bd9Sstevel@tonic-gate cmd->cmd_hnew = 0; 967c478bd9Sstevel@tonic-gate cmd->cmd_hcur = 0; 977c478bd9Sstevel@tonic-gate cmd->cmd_hlen = 0; 987c478bd9Sstevel@tonic-gate } 997c478bd9Sstevel@tonic-gate 1007c478bd9Sstevel@tonic-gate void 1017c478bd9Sstevel@tonic-gate mdb_cmdbuf_destroy(mdb_cmdbuf_t *cmd) 1027c478bd9Sstevel@tonic-gate { 1037c478bd9Sstevel@tonic-gate size_t i; 1047c478bd9Sstevel@tonic-gate 105*b2a1c443Svb for (i = 0; i < cmd->cmd_halloc; i++) 1067c478bd9Sstevel@tonic-gate mdb_free(cmd->cmd_history[i], CMDBUF_LINELEN); 1077c478bd9Sstevel@tonic-gate 1087c478bd9Sstevel@tonic-gate mdb_free(cmd->cmd_linebuf, CMDBUF_LINELEN); 109*b2a1c443Svb mdb_free(cmd->cmd_history, cmd->cmd_halloc * sizeof (char *)); 1107c478bd9Sstevel@tonic-gate } 1117c478bd9Sstevel@tonic-gate 1127c478bd9Sstevel@tonic-gate int 1137c478bd9Sstevel@tonic-gate mdb_cmdbuf_caninsert(mdb_cmdbuf_t *cmd, size_t nbytes) 1147c478bd9Sstevel@tonic-gate { 1157c478bd9Sstevel@tonic-gate return (cmd->cmd_buflen + nbytes < cmd->cmd_linelen); 1167c478bd9Sstevel@tonic-gate } 1177c478bd9Sstevel@tonic-gate 1187c478bd9Sstevel@tonic-gate int 1197c478bd9Sstevel@tonic-gate mdb_cmdbuf_atstart(mdb_cmdbuf_t *cmd) 1207c478bd9Sstevel@tonic-gate { 1217c478bd9Sstevel@tonic-gate return (cmd->cmd_bufidx == 0); 1227c478bd9Sstevel@tonic-gate } 1237c478bd9Sstevel@tonic-gate 1247c478bd9Sstevel@tonic-gate int 1257c478bd9Sstevel@tonic-gate mdb_cmdbuf_atend(mdb_cmdbuf_t *cmd) 1267c478bd9Sstevel@tonic-gate { 1277c478bd9Sstevel@tonic-gate return (cmd->cmd_bufidx == cmd->cmd_buflen); 1287c478bd9Sstevel@tonic-gate } 1297c478bd9Sstevel@tonic-gate 1307c478bd9Sstevel@tonic-gate int 1317c478bd9Sstevel@tonic-gate mdb_cmdbuf_insert(mdb_cmdbuf_t *cmd, int c) 1327c478bd9Sstevel@tonic-gate { 1337c478bd9Sstevel@tonic-gate if (c == '\t') { 1347c478bd9Sstevel@tonic-gate if (cmd->cmd_buflen + CMDBUF_TABLEN < cmd->cmd_linelen) { 1357c478bd9Sstevel@tonic-gate int i; 1367c478bd9Sstevel@tonic-gate 1377c478bd9Sstevel@tonic-gate if (cmd->cmd_buflen != cmd->cmd_bufidx) 1387c478bd9Sstevel@tonic-gate cmdbuf_shiftr(cmd, CMDBUF_TABLEN); 1397c478bd9Sstevel@tonic-gate 1407c478bd9Sstevel@tonic-gate for (i = 0; i < CMDBUF_TABLEN; i++) 1417c478bd9Sstevel@tonic-gate cmd->cmd_buf[cmd->cmd_bufidx++] = ' '; 1427c478bd9Sstevel@tonic-gate 1437c478bd9Sstevel@tonic-gate cmd->cmd_buflen += CMDBUF_TABLEN; 1447c478bd9Sstevel@tonic-gate return (0); 1457c478bd9Sstevel@tonic-gate } 1467c478bd9Sstevel@tonic-gate 1477c478bd9Sstevel@tonic-gate return (-1); 1487c478bd9Sstevel@tonic-gate } 1497c478bd9Sstevel@tonic-gate 1507c478bd9Sstevel@tonic-gate if (c < ' ' || c > '~') 1517c478bd9Sstevel@tonic-gate return (-1); 1527c478bd9Sstevel@tonic-gate 1537c478bd9Sstevel@tonic-gate if (cmd->cmd_buflen < cmd->cmd_linelen) { 1547c478bd9Sstevel@tonic-gate if (cmd->cmd_buflen != cmd->cmd_bufidx) 1557c478bd9Sstevel@tonic-gate cmdbuf_shiftr(cmd, 1); 1567c478bd9Sstevel@tonic-gate 1577c478bd9Sstevel@tonic-gate cmd->cmd_buf[cmd->cmd_bufidx++] = (char)c; 1587c478bd9Sstevel@tonic-gate cmd->cmd_buflen++; 1597c478bd9Sstevel@tonic-gate 1607c478bd9Sstevel@tonic-gate return (0); 1617c478bd9Sstevel@tonic-gate } 1627c478bd9Sstevel@tonic-gate 1637c478bd9Sstevel@tonic-gate return (-1); 1647c478bd9Sstevel@tonic-gate } 1657c478bd9Sstevel@tonic-gate 1667c478bd9Sstevel@tonic-gate const char * 1677c478bd9Sstevel@tonic-gate mdb_cmdbuf_accept(mdb_cmdbuf_t *cmd) 1687c478bd9Sstevel@tonic-gate { 1697c478bd9Sstevel@tonic-gate if (cmd->cmd_bufidx < cmd->cmd_linelen) { 1707c478bd9Sstevel@tonic-gate cmd->cmd_buf[cmd->cmd_buflen++] = '\0'; 1717c478bd9Sstevel@tonic-gate (void) strcpy(cmd->cmd_linebuf, cmd->cmd_buf); 1727c478bd9Sstevel@tonic-gate 1737c478bd9Sstevel@tonic-gate /* 1747c478bd9Sstevel@tonic-gate * Don't bother inserting empty buffers into the history ring. 1757c478bd9Sstevel@tonic-gate */ 1767c478bd9Sstevel@tonic-gate if (cmd->cmd_buflen > 1) { 1777c478bd9Sstevel@tonic-gate cmd->cmd_hnew = (cmd->cmd_hnew + 1) % cmd->cmd_histlen; 178*b2a1c443Svb if (cmd->cmd_hnew >= cmd->cmd_halloc) 179*b2a1c443Svb mdb_cmdbuf_allocchunk(cmd); 180*b2a1c443Svb 1817c478bd9Sstevel@tonic-gate cmd->cmd_buf = cmd->cmd_history[cmd->cmd_hnew]; 1827c478bd9Sstevel@tonic-gate cmd->cmd_hcur = cmd->cmd_hnew; 1837c478bd9Sstevel@tonic-gate 1847c478bd9Sstevel@tonic-gate if (cmd->cmd_hlen + 1 == cmd->cmd_histlen) 1857c478bd9Sstevel@tonic-gate cmd->cmd_hold = 1867c478bd9Sstevel@tonic-gate (cmd->cmd_hold + 1) % cmd->cmd_histlen; 1877c478bd9Sstevel@tonic-gate else 1887c478bd9Sstevel@tonic-gate cmd->cmd_hlen++; 1897c478bd9Sstevel@tonic-gate } 1907c478bd9Sstevel@tonic-gate 1917c478bd9Sstevel@tonic-gate cmd->cmd_bufidx = 0; 1927c478bd9Sstevel@tonic-gate cmd->cmd_buflen = 0; 1937c478bd9Sstevel@tonic-gate 1947c478bd9Sstevel@tonic-gate return ((const char *)cmd->cmd_linebuf); 1957c478bd9Sstevel@tonic-gate } 1967c478bd9Sstevel@tonic-gate 1977c478bd9Sstevel@tonic-gate return (NULL); 1987c478bd9Sstevel@tonic-gate } 1997c478bd9Sstevel@tonic-gate 2007c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 2017c478bd9Sstevel@tonic-gate int 2027c478bd9Sstevel@tonic-gate mdb_cmdbuf_backspace(mdb_cmdbuf_t *cmd, int c) 2037c478bd9Sstevel@tonic-gate { 2047c478bd9Sstevel@tonic-gate if (cmd->cmd_bufidx > 0) { 2057c478bd9Sstevel@tonic-gate if (cmd->cmd_buflen != cmd->cmd_bufidx) { 2067c478bd9Sstevel@tonic-gate bcopy(&cmd->cmd_buf[cmd->cmd_bufidx], 2077c478bd9Sstevel@tonic-gate &cmd->cmd_buf[cmd->cmd_bufidx - 1], 2087c478bd9Sstevel@tonic-gate cmd->cmd_buflen - cmd->cmd_bufidx); 2097c478bd9Sstevel@tonic-gate } 2107c478bd9Sstevel@tonic-gate 2117c478bd9Sstevel@tonic-gate cmd->cmd_bufidx--; 2127c478bd9Sstevel@tonic-gate cmd->cmd_buflen--; 2137c478bd9Sstevel@tonic-gate 2147c478bd9Sstevel@tonic-gate return (0); 2157c478bd9Sstevel@tonic-gate } 2167c478bd9Sstevel@tonic-gate 2177c478bd9Sstevel@tonic-gate return (-1); 2187c478bd9Sstevel@tonic-gate } 2197c478bd9Sstevel@tonic-gate 2207c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 2217c478bd9Sstevel@tonic-gate int 2227c478bd9Sstevel@tonic-gate mdb_cmdbuf_delchar(mdb_cmdbuf_t *cmd, int c) 2237c478bd9Sstevel@tonic-gate { 2247c478bd9Sstevel@tonic-gate if (cmd->cmd_bufidx < cmd->cmd_buflen) { 2257c478bd9Sstevel@tonic-gate if (cmd->cmd_bufidx < --cmd->cmd_buflen) { 2267c478bd9Sstevel@tonic-gate bcopy(&cmd->cmd_buf[cmd->cmd_bufidx + 1], 2277c478bd9Sstevel@tonic-gate &cmd->cmd_buf[cmd->cmd_bufidx], 2287c478bd9Sstevel@tonic-gate cmd->cmd_buflen - cmd->cmd_bufidx); 2297c478bd9Sstevel@tonic-gate } 2307c478bd9Sstevel@tonic-gate 2317c478bd9Sstevel@tonic-gate return (0); 2327c478bd9Sstevel@tonic-gate } 2337c478bd9Sstevel@tonic-gate 2347c478bd9Sstevel@tonic-gate return (-1); 2357c478bd9Sstevel@tonic-gate } 2367c478bd9Sstevel@tonic-gate 2377c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 2387c478bd9Sstevel@tonic-gate int 2397c478bd9Sstevel@tonic-gate mdb_cmdbuf_fwdchar(mdb_cmdbuf_t *cmd, int c) 2407c478bd9Sstevel@tonic-gate { 2417c478bd9Sstevel@tonic-gate if (cmd->cmd_bufidx < cmd->cmd_buflen) { 2427c478bd9Sstevel@tonic-gate cmd->cmd_bufidx++; 2437c478bd9Sstevel@tonic-gate return (0); 2447c478bd9Sstevel@tonic-gate } 2457c478bd9Sstevel@tonic-gate 2467c478bd9Sstevel@tonic-gate return (-1); 2477c478bd9Sstevel@tonic-gate } 2487c478bd9Sstevel@tonic-gate 2497c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 2507c478bd9Sstevel@tonic-gate int 2517c478bd9Sstevel@tonic-gate mdb_cmdbuf_backchar(mdb_cmdbuf_t *cmd, int c) 2527c478bd9Sstevel@tonic-gate { 2537c478bd9Sstevel@tonic-gate if (cmd->cmd_bufidx > 0) { 2547c478bd9Sstevel@tonic-gate cmd->cmd_bufidx--; 2557c478bd9Sstevel@tonic-gate return (0); 2567c478bd9Sstevel@tonic-gate } 2577c478bd9Sstevel@tonic-gate 2587c478bd9Sstevel@tonic-gate return (-1); 2597c478bd9Sstevel@tonic-gate } 2607c478bd9Sstevel@tonic-gate 2617c478bd9Sstevel@tonic-gate int 2627c478bd9Sstevel@tonic-gate mdb_cmdbuf_transpose(mdb_cmdbuf_t *cmd, int c) 2637c478bd9Sstevel@tonic-gate { 2647c478bd9Sstevel@tonic-gate if (cmd->cmd_bufidx > 0 && cmd->cmd_buflen > 1) { 2657c478bd9Sstevel@tonic-gate c = cmd->cmd_buf[cmd->cmd_bufidx - 1]; 2667c478bd9Sstevel@tonic-gate 2677c478bd9Sstevel@tonic-gate if (cmd->cmd_bufidx == cmd->cmd_buflen) { 2687c478bd9Sstevel@tonic-gate cmd->cmd_buf[cmd->cmd_bufidx - 1] = 2697c478bd9Sstevel@tonic-gate cmd->cmd_buf[cmd->cmd_bufidx - 2]; 2707c478bd9Sstevel@tonic-gate cmd->cmd_buf[cmd->cmd_bufidx - 2] = (char)c; 2717c478bd9Sstevel@tonic-gate } else { 2727c478bd9Sstevel@tonic-gate cmd->cmd_buf[cmd->cmd_bufidx - 1] = 2737c478bd9Sstevel@tonic-gate cmd->cmd_buf[cmd->cmd_bufidx]; 2747c478bd9Sstevel@tonic-gate cmd->cmd_buf[cmd->cmd_bufidx++] = (char)c; 2757c478bd9Sstevel@tonic-gate } 2767c478bd9Sstevel@tonic-gate 2777c478bd9Sstevel@tonic-gate return (0); 2787c478bd9Sstevel@tonic-gate } 2797c478bd9Sstevel@tonic-gate 2807c478bd9Sstevel@tonic-gate return (-1); 2817c478bd9Sstevel@tonic-gate } 2827c478bd9Sstevel@tonic-gate 2837c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 2847c478bd9Sstevel@tonic-gate int 2857c478bd9Sstevel@tonic-gate mdb_cmdbuf_home(mdb_cmdbuf_t *cmd, int c) 2867c478bd9Sstevel@tonic-gate { 2877c478bd9Sstevel@tonic-gate cmd->cmd_bufidx = 0; 2887c478bd9Sstevel@tonic-gate return (0); 2897c478bd9Sstevel@tonic-gate } 2907c478bd9Sstevel@tonic-gate 2917c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 2927c478bd9Sstevel@tonic-gate int 2937c478bd9Sstevel@tonic-gate mdb_cmdbuf_end(mdb_cmdbuf_t *cmd, int c) 2947c478bd9Sstevel@tonic-gate { 2957c478bd9Sstevel@tonic-gate cmd->cmd_bufidx = cmd->cmd_buflen; 2967c478bd9Sstevel@tonic-gate return (0); 2977c478bd9Sstevel@tonic-gate } 2987c478bd9Sstevel@tonic-gate 2997c478bd9Sstevel@tonic-gate static size_t 3007c478bd9Sstevel@tonic-gate fwdword_index(mdb_cmdbuf_t *cmd) 3017c478bd9Sstevel@tonic-gate { 3027c478bd9Sstevel@tonic-gate size_t i = cmd->cmd_bufidx + 1; 3037c478bd9Sstevel@tonic-gate 3047c478bd9Sstevel@tonic-gate ASSERT(cmd->cmd_bufidx < cmd->cmd_buflen); 3057c478bd9Sstevel@tonic-gate 3067c478bd9Sstevel@tonic-gate while (i < cmd->cmd_buflen && isspace(cmd->cmd_buf[i])) 3077c478bd9Sstevel@tonic-gate i++; 3087c478bd9Sstevel@tonic-gate 3097c478bd9Sstevel@tonic-gate while (i < cmd->cmd_buflen && !isspace(cmd->cmd_buf[i]) && 3107c478bd9Sstevel@tonic-gate !isalnum(cmd->cmd_buf[i]) && cmd->cmd_buf[i] != '_') 3117c478bd9Sstevel@tonic-gate i++; 3127c478bd9Sstevel@tonic-gate 3137c478bd9Sstevel@tonic-gate while (i < cmd->cmd_buflen && 3147c478bd9Sstevel@tonic-gate (isalnum(cmd->cmd_buf[i]) || cmd->cmd_buf[i] == '_')) 3157c478bd9Sstevel@tonic-gate i++; 3167c478bd9Sstevel@tonic-gate 3177c478bd9Sstevel@tonic-gate return (i); 3187c478bd9Sstevel@tonic-gate } 3197c478bd9Sstevel@tonic-gate 3207c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 3217c478bd9Sstevel@tonic-gate int 3227c478bd9Sstevel@tonic-gate mdb_cmdbuf_fwdword(mdb_cmdbuf_t *cmd, int c) 3237c478bd9Sstevel@tonic-gate { 3247c478bd9Sstevel@tonic-gate if (cmd->cmd_bufidx == cmd->cmd_buflen) 3257c478bd9Sstevel@tonic-gate return (-1); 3267c478bd9Sstevel@tonic-gate 3277c478bd9Sstevel@tonic-gate cmd->cmd_bufidx = fwdword_index(cmd); 3287c478bd9Sstevel@tonic-gate 3297c478bd9Sstevel@tonic-gate return (0); 3307c478bd9Sstevel@tonic-gate } 3317c478bd9Sstevel@tonic-gate 3327c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 3337c478bd9Sstevel@tonic-gate int 3347c478bd9Sstevel@tonic-gate mdb_cmdbuf_killfwdword(mdb_cmdbuf_t *cmd, int c) 3357c478bd9Sstevel@tonic-gate { 3367c478bd9Sstevel@tonic-gate size_t i; 3377c478bd9Sstevel@tonic-gate 3387c478bd9Sstevel@tonic-gate if (cmd->cmd_bufidx == cmd->cmd_buflen) 3397c478bd9Sstevel@tonic-gate return (-1); 3407c478bd9Sstevel@tonic-gate 3417c478bd9Sstevel@tonic-gate i = fwdword_index(cmd); 3427c478bd9Sstevel@tonic-gate 3437c478bd9Sstevel@tonic-gate bcopy(&cmd->cmd_buf[i], &cmd->cmd_buf[cmd->cmd_bufidx], 3447c478bd9Sstevel@tonic-gate cmd->cmd_buflen - i); 3457c478bd9Sstevel@tonic-gate 3467c478bd9Sstevel@tonic-gate cmd->cmd_buflen -= i - cmd->cmd_bufidx; 3477c478bd9Sstevel@tonic-gate 3487c478bd9Sstevel@tonic-gate return (0); 3497c478bd9Sstevel@tonic-gate } 3507c478bd9Sstevel@tonic-gate 3517c478bd9Sstevel@tonic-gate static size_t 3527c478bd9Sstevel@tonic-gate backword_index(mdb_cmdbuf_t *cmd) 3537c478bd9Sstevel@tonic-gate { 3547c478bd9Sstevel@tonic-gate size_t i = cmd->cmd_bufidx - 1; 3557c478bd9Sstevel@tonic-gate 3567c478bd9Sstevel@tonic-gate ASSERT(cmd->cmd_bufidx != 0); 3577c478bd9Sstevel@tonic-gate 3587c478bd9Sstevel@tonic-gate while (i != 0 && isspace(cmd->cmd_buf[i])) 3597c478bd9Sstevel@tonic-gate i--; 3607c478bd9Sstevel@tonic-gate 3617c478bd9Sstevel@tonic-gate while (i != 0 && !isspace(cmd->cmd_buf[i]) && 3627c478bd9Sstevel@tonic-gate !isalnum(cmd->cmd_buf[i]) && cmd->cmd_buf[i] != '_') 3637c478bd9Sstevel@tonic-gate i--; 3647c478bd9Sstevel@tonic-gate 3657c478bd9Sstevel@tonic-gate while (i != 0 && (isalnum(cmd->cmd_buf[i]) || cmd->cmd_buf[i] == '_')) 3667c478bd9Sstevel@tonic-gate i--; 3677c478bd9Sstevel@tonic-gate 3687c478bd9Sstevel@tonic-gate if (i != 0) 3697c478bd9Sstevel@tonic-gate i++; 3707c478bd9Sstevel@tonic-gate 3717c478bd9Sstevel@tonic-gate return (i); 3727c478bd9Sstevel@tonic-gate } 3737c478bd9Sstevel@tonic-gate 3747c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 3757c478bd9Sstevel@tonic-gate int 3767c478bd9Sstevel@tonic-gate mdb_cmdbuf_backword(mdb_cmdbuf_t *cmd, int c) 3777c478bd9Sstevel@tonic-gate { 3787c478bd9Sstevel@tonic-gate if (cmd->cmd_bufidx == 0) 3797c478bd9Sstevel@tonic-gate return (-1); 3807c478bd9Sstevel@tonic-gate 3817c478bd9Sstevel@tonic-gate cmd->cmd_bufidx = backword_index(cmd); 3827c478bd9Sstevel@tonic-gate 3837c478bd9Sstevel@tonic-gate return (0); 3847c478bd9Sstevel@tonic-gate } 3857c478bd9Sstevel@tonic-gate 3867c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 3877c478bd9Sstevel@tonic-gate int 3887c478bd9Sstevel@tonic-gate mdb_cmdbuf_killbackword(mdb_cmdbuf_t *cmd, int c) 3897c478bd9Sstevel@tonic-gate { 3907c478bd9Sstevel@tonic-gate size_t i; 3917c478bd9Sstevel@tonic-gate 3927c478bd9Sstevel@tonic-gate if (cmd->cmd_bufidx == 0) 3937c478bd9Sstevel@tonic-gate return (-1); 3947c478bd9Sstevel@tonic-gate 3957c478bd9Sstevel@tonic-gate i = backword_index(cmd); 3967c478bd9Sstevel@tonic-gate 3977c478bd9Sstevel@tonic-gate bcopy(&cmd->cmd_buf[cmd->cmd_bufidx], &cmd->cmd_buf[i], 3987c478bd9Sstevel@tonic-gate cmd->cmd_buflen - cmd->cmd_bufidx); 3997c478bd9Sstevel@tonic-gate 4007c478bd9Sstevel@tonic-gate cmd->cmd_buflen -= cmd->cmd_bufidx - i; 4017c478bd9Sstevel@tonic-gate cmd->cmd_bufidx = i; 4027c478bd9Sstevel@tonic-gate 4037c478bd9Sstevel@tonic-gate return (0); 4047c478bd9Sstevel@tonic-gate } 4057c478bd9Sstevel@tonic-gate 4067c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 4077c478bd9Sstevel@tonic-gate int 4087c478bd9Sstevel@tonic-gate mdb_cmdbuf_kill(mdb_cmdbuf_t *cmd, int c) 4097c478bd9Sstevel@tonic-gate { 4107c478bd9Sstevel@tonic-gate cmd->cmd_buflen = cmd->cmd_bufidx; 4117c478bd9Sstevel@tonic-gate return (0); 4127c478bd9Sstevel@tonic-gate } 4137c478bd9Sstevel@tonic-gate 4147c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 4157c478bd9Sstevel@tonic-gate int 4167c478bd9Sstevel@tonic-gate mdb_cmdbuf_reset(mdb_cmdbuf_t *cmd, int c) 4177c478bd9Sstevel@tonic-gate { 4187c478bd9Sstevel@tonic-gate cmd->cmd_buflen = 0; 4197c478bd9Sstevel@tonic-gate cmd->cmd_bufidx = 0; 4207c478bd9Sstevel@tonic-gate return (0); 4217c478bd9Sstevel@tonic-gate } 4227c478bd9Sstevel@tonic-gate 4237c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 4247c478bd9Sstevel@tonic-gate int 4257c478bd9Sstevel@tonic-gate mdb_cmdbuf_prevhist(mdb_cmdbuf_t *cmd, int c) 4267c478bd9Sstevel@tonic-gate { 4277c478bd9Sstevel@tonic-gate if (cmd->cmd_hcur != cmd->cmd_hold) { 4287c478bd9Sstevel@tonic-gate if (cmd->cmd_hcur-- == cmd->cmd_hnew) { 4297c478bd9Sstevel@tonic-gate cmd->cmd_buf[cmd->cmd_buflen] = 0; 4307c478bd9Sstevel@tonic-gate (void) strcpy(cmd->cmd_linebuf, cmd->cmd_buf); 4317c478bd9Sstevel@tonic-gate } 4327c478bd9Sstevel@tonic-gate 4337c478bd9Sstevel@tonic-gate if (cmd->cmd_hcur < 0) 434*b2a1c443Svb cmd->cmd_hcur = cmd->cmd_halloc - 1; 4357c478bd9Sstevel@tonic-gate 4367c478bd9Sstevel@tonic-gate (void) strcpy(cmd->cmd_buf, cmd->cmd_history[cmd->cmd_hcur]); 4377c478bd9Sstevel@tonic-gate cmd->cmd_bufidx = strlen(cmd->cmd_buf); 4387c478bd9Sstevel@tonic-gate cmd->cmd_buflen = cmd->cmd_bufidx; 4397c478bd9Sstevel@tonic-gate 4407c478bd9Sstevel@tonic-gate return (0); 4417c478bd9Sstevel@tonic-gate } 4427c478bd9Sstevel@tonic-gate 4437c478bd9Sstevel@tonic-gate return (-1); 4447c478bd9Sstevel@tonic-gate } 4457c478bd9Sstevel@tonic-gate 4467c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 4477c478bd9Sstevel@tonic-gate int 4487c478bd9Sstevel@tonic-gate mdb_cmdbuf_nexthist(mdb_cmdbuf_t *cmd, int c) 4497c478bd9Sstevel@tonic-gate { 4507c478bd9Sstevel@tonic-gate if (cmd->cmd_hcur != cmd->cmd_hnew) { 451*b2a1c443Svb cmd->cmd_hcur = (cmd->cmd_hcur + 1) % cmd->cmd_halloc; 4527c478bd9Sstevel@tonic-gate 4537c478bd9Sstevel@tonic-gate if (cmd->cmd_hcur == cmd->cmd_hnew) { 4547c478bd9Sstevel@tonic-gate (void) strcpy(cmd->cmd_buf, cmd->cmd_linebuf); 4557c478bd9Sstevel@tonic-gate } else { 4567c478bd9Sstevel@tonic-gate (void) strcpy(cmd->cmd_buf, 4577c478bd9Sstevel@tonic-gate cmd->cmd_history[cmd->cmd_hcur]); 4587c478bd9Sstevel@tonic-gate } 4597c478bd9Sstevel@tonic-gate 4607c478bd9Sstevel@tonic-gate cmd->cmd_bufidx = strlen(cmd->cmd_buf); 4617c478bd9Sstevel@tonic-gate cmd->cmd_buflen = cmd->cmd_bufidx; 4627c478bd9Sstevel@tonic-gate 4637c478bd9Sstevel@tonic-gate return (0); 4647c478bd9Sstevel@tonic-gate } 4657c478bd9Sstevel@tonic-gate 4667c478bd9Sstevel@tonic-gate return (-1); 4677c478bd9Sstevel@tonic-gate } 4687c478bd9Sstevel@tonic-gate 4697c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 4707c478bd9Sstevel@tonic-gate int 4717c478bd9Sstevel@tonic-gate mdb_cmdbuf_findhist(mdb_cmdbuf_t *cmd, int c) 4727c478bd9Sstevel@tonic-gate { 4737c478bd9Sstevel@tonic-gate ssize_t i, n; 4747c478bd9Sstevel@tonic-gate 4757c478bd9Sstevel@tonic-gate if (cmd->cmd_buflen != 0) { 4767c478bd9Sstevel@tonic-gate cmd->cmd_hcur = cmd->cmd_hnew; 4777c478bd9Sstevel@tonic-gate cmd->cmd_buf[cmd->cmd_buflen] = 0; 4787c478bd9Sstevel@tonic-gate (void) strcpy(cmd->cmd_linebuf, cmd->cmd_buf); 4797c478bd9Sstevel@tonic-gate } 4807c478bd9Sstevel@tonic-gate 4817c478bd9Sstevel@tonic-gate for (i = cmd->cmd_hcur, n = 0; n < cmd->cmd_hlen; n++) { 4827c478bd9Sstevel@tonic-gate if (--i < 0) 483*b2a1c443Svb i = cmd->cmd_halloc - 1; 4847c478bd9Sstevel@tonic-gate 4857c478bd9Sstevel@tonic-gate if (strstr(cmd->cmd_history[i], cmd->cmd_linebuf) != NULL) { 4867c478bd9Sstevel@tonic-gate (void) strcpy(cmd->cmd_buf, cmd->cmd_history[i]); 4877c478bd9Sstevel@tonic-gate cmd->cmd_bufidx = strlen(cmd->cmd_buf); 4887c478bd9Sstevel@tonic-gate cmd->cmd_buflen = cmd->cmd_bufidx; 4897c478bd9Sstevel@tonic-gate cmd->cmd_hcur = i; 4907c478bd9Sstevel@tonic-gate 4917c478bd9Sstevel@tonic-gate return (0); 4927c478bd9Sstevel@tonic-gate } 4937c478bd9Sstevel@tonic-gate } 4947c478bd9Sstevel@tonic-gate 4957c478bd9Sstevel@tonic-gate cmd->cmd_hcur = cmd->cmd_hnew; 4967c478bd9Sstevel@tonic-gate 4977c478bd9Sstevel@tonic-gate cmd->cmd_bufidx = 0; 4987c478bd9Sstevel@tonic-gate cmd->cmd_buflen = 0; 4997c478bd9Sstevel@tonic-gate 5007c478bd9Sstevel@tonic-gate return (-1); 5017c478bd9Sstevel@tonic-gate } 502