1 /* $NetBSD: glbl.c,v 1.4 1998/08/19 01:33:31 thorpej Exp $ */ 2 3 /* glob.c: This file contains the global command routines for the ed line 4 editor */ 5 /*- 6 * Copyright (c) 1993 Andrew Moore, Talke Studio. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 #ifndef lint 33 #if 0 34 static char *rcsid = "@(#)glob.c,v 1.1 1994/02/01 00:34:40 alm Exp"; 35 #else 36 __RCSID("$NetBSD: glbl.c,v 1.4 1998/08/19 01:33:31 thorpej Exp $"); 37 #endif 38 #endif /* not lint */ 39 40 #include <sys/ioctl.h> 41 #include <sys/wait.h> 42 43 #include "ed.h" 44 45 46 /* build_active_list: add line matching a pattern to the global-active list */ 47 int 48 build_active_list(isgcmd) 49 int isgcmd; 50 { 51 pattern_t *pat; 52 line_t *lp; 53 long n; 54 char *s; 55 char delimiter; 56 57 if ((delimiter = *ibufp) == ' ' || delimiter == '\n') { 58 sprintf(errmsg, "invalid pattern delimiter"); 59 return ERR; 60 } else if ((pat = get_compiled_pattern()) == NULL) 61 return ERR; 62 else if (*ibufp == delimiter) 63 ibufp++; 64 clear_active_list(); 65 lp = get_addressed_line_node(first_addr); 66 for (n = first_addr; n <= second_addr; n++, lp = lp->q_forw) { 67 if ((s = get_sbuf_line(lp)) == NULL) 68 return ERR; 69 if (isbinary) 70 NUL_TO_NEWLINE(s, lp->len); 71 if (!regexec(pat, s, 0, NULL, 0) == isgcmd && 72 set_active_node(lp) < 0) 73 return ERR; 74 } 75 return 0; 76 } 77 78 79 /* exec_global: apply command list in the command buffer to the active 80 lines in a range; return command status */ 81 long 82 exec_global(interact, gflag) 83 int interact; 84 int gflag; 85 { 86 static char *ocmd = NULL; 87 static int ocmdsz = 0; 88 89 line_t *lp = NULL; 90 int status; 91 int n; 92 char *cmd = NULL; 93 94 #ifdef BACKWARDS 95 if (!interact) { 96 if (!strcmp(ibufp, "\n")) 97 cmd = "p\n"; /* null cmd-list == `p' */ 98 else if ((cmd = get_extended_line(&n, 0)) == NULL) 99 return ERR; 100 } 101 #else 102 if (!interact && (cmd = get_extended_line(&n, 0)) == NULL) 103 return ERR; 104 #endif 105 clear_undo_stack(); 106 while ((lp = next_active_node()) != NULL) { 107 if ((current_addr = get_line_node_addr(lp)) < 0) 108 return ERR; 109 if (interact) { 110 /* print current_addr; get a command in global syntax */ 111 if (display_lines(current_addr, current_addr, gflag) < 0) 112 return ERR; 113 while ((n = get_tty_line()) > 0 && 114 ibuf[n - 1] != '\n') 115 clearerr(stdin); 116 if (n < 0) 117 return ERR; 118 else if (n == 0) { 119 sprintf(errmsg, "unexpected end-of-file"); 120 return ERR; 121 } else if (n == 1 && !strcmp(ibuf, "\n")) 122 continue; 123 else if (n == 2 && !strcmp(ibuf, "&\n")) { 124 if (cmd == NULL) { 125 sprintf(errmsg, "no previous command"); 126 return ERR; 127 } else cmd = ocmd; 128 } else if ((cmd = get_extended_line(&n, 0)) == NULL) 129 return ERR; 130 else { 131 REALLOC(ocmd, ocmdsz, n + 1, ERR); 132 memcpy(ocmd, cmd, n + 1); 133 cmd = ocmd; 134 } 135 136 } 137 ibufp = cmd; 138 for (; *ibufp;) 139 if ((status = extract_addr_range()) < 0 || 140 (status = exec_command()) < 0 || 141 (status > 0 && (status = display_lines( 142 current_addr, current_addr, status))) < 0) 143 return status; 144 } 145 return 0; 146 } 147 148 149 line_t **active_list; /* list of lines active in a global command */ 150 long active_last; /* index of last active line in active_list */ 151 long active_size; /* size of active_list */ 152 long active_ptr; /* active_list index (non-decreasing) */ 153 long active_ndx; /* active_list index (modulo active_last) */ 154 155 /* set_active_node: add a line node to the global-active list */ 156 int 157 set_active_node(lp) 158 line_t *lp; 159 { 160 if (active_last + 1 > active_size) { 161 int ti = active_size; 162 line_t **ts; 163 SPL1(); 164 #if defined(sun) || defined(NO_REALLOC_NULL) 165 if (active_list != NULL) { 166 #endif 167 if ((ts = (line_t **) realloc(active_list, 168 (ti += MINBUFSZ) * sizeof(line_t **))) == NULL) { 169 fprintf(stderr, "%s\n", strerror(errno)); 170 sprintf(errmsg, "out of memory"); 171 SPL0(); 172 return ERR; 173 } 174 #if defined(sun) || defined(NO_REALLOC_NULL) 175 } else { 176 if ((ts = (line_t **) malloc((ti += MINBUFSZ) * 177 sizeof(line_t **))) == NULL) { 178 fprintf(stderr, "%s\n", strerror(errno)); 179 sprintf(errmsg, "out of memory"); 180 SPL0(); 181 return ERR; 182 } 183 } 184 #endif 185 active_size = ti; 186 active_list = ts; 187 SPL0(); 188 } 189 active_list[active_last++] = lp; 190 return 0; 191 } 192 193 194 /* unset_active_nodes: remove a range of lines from the global-active list */ 195 void 196 unset_active_nodes(np, mp) 197 line_t *np, *mp; 198 { 199 line_t *lp; 200 long i; 201 202 for (lp = np; lp != mp; lp = lp->q_forw) 203 for (i = 0; i < active_last; i++) 204 if (active_list[active_ndx] == lp) { 205 active_list[active_ndx] = NULL; 206 active_ndx = INC_MOD(active_ndx, active_last - 1); 207 break; 208 } else active_ndx = INC_MOD(active_ndx, active_last - 1); 209 } 210 211 212 /* next_active_node: return the next global-active line node */ 213 line_t * 214 next_active_node() 215 { 216 while (active_ptr < active_last && active_list[active_ptr] == NULL) 217 active_ptr++; 218 return (active_ptr < active_last) ? active_list[active_ptr++] : NULL; 219 } 220 221 222 /* clear_active_list: clear the global-active list */ 223 void 224 clear_active_list() 225 { 226 SPL1(); 227 active_size = active_last = active_ptr = active_ndx = 0; 228 free(active_list); 229 active_list = NULL; 230 SPL0(); 231 } 232