1 /* $NetBSD: ex_util.c,v 1.3 2014/01/26 21:43:45 christos Exp $ */ 2 /*- 3 * Copyright (c) 1993, 1994 4 * The Regents of the University of California. All rights reserved. 5 * Copyright (c) 1993, 1994, 1995, 1996 6 * Keith Bostic. All rights reserved. 7 * 8 * See the LICENSE file for redistribution information. 9 */ 10 11 #include "config.h" 12 13 #include <sys/cdefs.h> 14 #if 0 15 #ifndef lint 16 static const char sccsid[] = "Id: ex_util.c,v 10.32 2001/06/25 15:19:21 skimo Exp (Berkeley) Date: 2001/06/25 15:19:21 "; 17 #endif /* not lint */ 18 #else 19 __RCSID("$NetBSD: ex_util.c,v 1.3 2014/01/26 21:43:45 christos Exp $"); 20 #endif 21 22 #include <sys/types.h> 23 #include <sys/queue.h> 24 #include <sys/stat.h> 25 26 #include <bitstring.h> 27 #include <errno.h> 28 #include <limits.h> 29 #include <stdio.h> 30 #include <stdlib.h> 31 #include <string.h> 32 #include <unistd.h> 33 34 #include "../common/common.h" 35 36 /* 37 * ex_cinit -- 38 * Create an EX command structure. 39 * 40 * PUBLIC: void ex_cinit __P((SCR *, EXCMD *, int, int, db_recno_t, db_recno_t, int)); 41 */ 42 void 43 ex_cinit(SCR *sp, EXCMD *cmdp, int cmd_id, int naddr, db_recno_t lno1, db_recno_t lno2, int force) 44 { 45 memset(cmdp, 0, sizeof(EXCMD)); 46 cmdp->cmd = &cmds[cmd_id]; 47 cmdp->addrcnt = naddr; 48 cmdp->addr1.lno = lno1; 49 cmdp->addr2.lno = lno2; 50 cmdp->addr1.cno = cmdp->addr2.cno = 1; 51 if (force) 52 cmdp->iflags |= E_C_FORCE; 53 (void)argv_init(sp, cmdp); 54 } 55 56 /* 57 * ex_getline -- 58 * Return a line from the file. 59 * 60 * PUBLIC: int ex_getline __P((SCR *, FILE *, size_t *)); 61 */ 62 int 63 ex_getline(SCR *sp, FILE *fp, size_t *lenp) 64 { 65 EX_PRIVATE *exp; 66 size_t off; 67 int ch; 68 char *p; 69 70 exp = EXP(sp); 71 for (errno = 0, off = 0, p = exp->ibp;;) { 72 if (off >= exp->ibp_len) { 73 BINC_RETC(sp, exp->ibp, exp->ibp_len, off + 1); 74 p = exp->ibp + off; 75 } 76 if ((ch = getc(fp)) == EOF && !feof(fp)) { 77 if (errno == EINTR) { 78 errno = 0; 79 clearerr(fp); 80 continue; 81 } 82 return (1); 83 } 84 if (ch == EOF || ch == '\n') { 85 if (ch == EOF && !off) 86 return (1); 87 *lenp = off; 88 return (0); 89 } 90 *p++ = ch; 91 ++off; 92 } 93 /* NOTREACHED */ 94 } 95 96 /* 97 * ex_ncheck -- 98 * Check for more files to edit. 99 * 100 * PUBLIC: int ex_ncheck __P((SCR *, int)); 101 */ 102 int 103 ex_ncheck(SCR *sp, int force) 104 { 105 char **ap; 106 107 /* 108 * !!! 109 * Historic practice: quit! or two quit's done in succession 110 * (where ZZ counts as a quit) didn't check for other files. 111 */ 112 if (!force && sp->ccnt != sp->q_ccnt + 1 && 113 sp->cargv != NULL && sp->cargv[1] != NULL) { 114 sp->q_ccnt = sp->ccnt; 115 116 for (ap = sp->cargv + 1; *ap != NULL; ++ap); 117 msgq(sp, M_ERR, 118 "167|%zd more files to edit", (ap - sp->cargv) - 1); 119 120 return (1); 121 } 122 return (0); 123 } 124 125 /* 126 * ex_init -- 127 * Init the screen for ex. 128 * 129 * PUBLIC: int ex_init __P((SCR *)); 130 */ 131 int 132 ex_init(SCR *sp) 133 { 134 GS *gp; 135 136 gp = sp->gp; 137 138 if (gp->scr_screen(sp, SC_EX)) 139 return (1); 140 (void)gp->scr_attr(sp, SA_ALTERNATE, 0); 141 142 sp->rows = O_VAL(sp, O_LINES); 143 sp->cols = O_VAL(sp, O_COLUMNS); 144 145 F_CLR(sp, SC_VI); 146 F_SET(sp, SC_EX | SC_SCR_EX); 147 return (0); 148 } 149 150 /* 151 * ex_emsg -- 152 * Display a few common ex and vi error messages. 153 * 154 * PUBLIC: void ex_wemsg __P((SCR *, const CHAR_T *, exm_t)); 155 */ 156 void 157 ex_wemsg(SCR* sp, const CHAR_T *p, exm_t which) 158 { 159 const char *np; 160 size_t nlen; 161 162 if (p) INT2CHAR(sp, p, STRLEN(p), np, nlen); 163 else np = NULL; 164 ex_emsg(sp, np, which); 165 } 166 167 /* 168 * ex_emsg -- 169 * Display a few common ex and vi error messages. 170 * 171 * PUBLIC: void ex_emsg __P((SCR *, const char *, exm_t)); 172 */ 173 void 174 ex_emsg(SCR *sp, const char *p, exm_t which) 175 { 176 switch (which) { 177 case EXM_EMPTYBUF: 178 msgq(sp, M_ERR, "168|Buffer %s is empty", p); 179 break; 180 case EXM_FILECOUNT: 181 msgq_str(sp, M_ERR, p, 182 "144|%s: expanded into too many file names"); 183 break; 184 case EXM_LOCKED: 185 msgq(sp, M_ERR, 186 "Command failed, buffer is locked"); 187 break; 188 case EXM_NOCANON: 189 msgq(sp, M_ERR, 190 "283|The %s command requires the ex terminal interface", p); 191 break; 192 case EXM_NOCANON_F: 193 msgq(sp, M_ERR, 194 "272|That form of %s requires the ex terminal interface", 195 p); 196 break; 197 case EXM_NOFILEYET: 198 if (p == NULL) 199 msgq(sp, M_ERR, 200 "274|Command failed, no file read in yet."); 201 else 202 msgq(sp, M_ERR, 203 "173|The %s command requires that a file have already been read in", p); 204 break; 205 case EXM_NOPREVBUF: 206 msgq(sp, M_ERR, "171|No previous buffer to execute"); 207 break; 208 case EXM_NOPREVRE: 209 msgq(sp, M_ERR, "172|No previous regular expression"); 210 break; 211 case EXM_NOSUSPEND: 212 msgq(sp, M_ERR, "230|This screen may not be suspended"); 213 break; 214 case EXM_SECURE: 215 msgq(sp, M_ERR, 216 "290|The %s command is not supported when the secure edit option is set", p); 217 break; 218 case EXM_SECURE_F: 219 msgq(sp, M_ERR, 220 "284|That form of %s is not supported when the secure edit option is set", p); 221 break; 222 case EXM_USAGE: 223 msgq(sp, M_ERR, "174|Usage: %s", p); 224 break; 225 } 226 } 227
Indexes created Mon May 25 00:24:39 UTC 2026