1 /* $NetBSD: ex_util.c,v 1.2 2013/11/22 15:52:05 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 #ifndef lint 14 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 "; 15 #endif /* not lint */ 16 17 #include <sys/types.h> 18 #include <sys/queue.h> 19 #include <sys/stat.h> 20 21 #include <bitstring.h> 22 #include <errno.h> 23 #include <limits.h> 24 #include <stdio.h> 25 #include <stdlib.h> 26 #include <string.h> 27 #include <unistd.h> 28 29 #include "../common/common.h" 30 31 /* 32 * ex_cinit -- 33 * Create an EX command structure. 34 * 35 * PUBLIC: void ex_cinit __P((SCR *, EXCMD *, int, int, db_recno_t, db_recno_t, int)); 36 */ 37 void 38 ex_cinit(SCR *sp, EXCMD *cmdp, int cmd_id, int naddr, db_recno_t lno1, db_recno_t lno2, int force) 39 { 40 memset(cmdp, 0, sizeof(EXCMD)); 41 cmdp->cmd = &cmds[cmd_id]; 42 cmdp->addrcnt = naddr; 43 cmdp->addr1.lno = lno1; 44 cmdp->addr2.lno = lno2; 45 cmdp->addr1.cno = cmdp->addr2.cno = 1; 46 if (force) 47 cmdp->iflags |= E_C_FORCE; 48 (void)argv_init(sp, cmdp); 49 } 50 51 /* 52 * ex_getline -- 53 * Return a line from the file. 54 * 55 * PUBLIC: int ex_getline __P((SCR *, FILE *, size_t *)); 56 */ 57 int 58 ex_getline(SCR *sp, FILE *fp, size_t *lenp) 59 { 60 EX_PRIVATE *exp; 61 size_t off; 62 int ch; 63 char *p; 64 65 exp = EXP(sp); 66 for (errno = 0, off = 0, p = exp->ibp;;) { 67 if (off >= exp->ibp_len) { 68 BINC_RETC(sp, exp->ibp, exp->ibp_len, off + 1); 69 p = exp->ibp + off; 70 } 71 if ((ch = getc(fp)) == EOF && !feof(fp)) { 72 if (errno == EINTR) { 73 errno = 0; 74 clearerr(fp); 75 continue; 76 } 77 return (1); 78 } 79 if (ch == EOF || ch == '\n') { 80 if (ch == EOF && !off) 81 return (1); 82 *lenp = off; 83 return (0); 84 } 85 *p++ = ch; 86 ++off; 87 } 88 /* NOTREACHED */ 89 } 90 91 /* 92 * ex_ncheck -- 93 * Check for more files to edit. 94 * 95 * PUBLIC: int ex_ncheck __P((SCR *, int)); 96 */ 97 int 98 ex_ncheck(SCR *sp, int force) 99 { 100 char **ap; 101 102 /* 103 * !!! 104 * Historic practice: quit! or two quit's done in succession 105 * (where ZZ counts as a quit) didn't check for other files. 106 */ 107 if (!force && sp->ccnt != sp->q_ccnt + 1 && 108 sp->cargv != NULL && sp->cargv[1] != NULL) { 109 sp->q_ccnt = sp->ccnt; 110 111 for (ap = sp->cargv + 1; *ap != NULL; ++ap); 112 msgq(sp, M_ERR, 113 "167|%zd more files to edit", (ap - sp->cargv) - 1); 114 115 return (1); 116 } 117 return (0); 118 } 119 120 /* 121 * ex_init -- 122 * Init the screen for ex. 123 * 124 * PUBLIC: int ex_init __P((SCR *)); 125 */ 126 int 127 ex_init(SCR *sp) 128 { 129 GS *gp; 130 131 gp = sp->gp; 132 133 if (gp->scr_screen(sp, SC_EX)) 134 return (1); 135 (void)gp->scr_attr(sp, SA_ALTERNATE, 0); 136 137 sp->rows = O_VAL(sp, O_LINES); 138 sp->cols = O_VAL(sp, O_COLUMNS); 139 140 F_CLR(sp, SC_VI); 141 F_SET(sp, SC_EX | SC_SCR_EX); 142 return (0); 143 } 144 145 /* 146 * ex_emsg -- 147 * Display a few common ex and vi error messages. 148 * 149 * PUBLIC: void ex_wemsg __P((SCR *, const CHAR_T *, exm_t)); 150 */ 151 void 152 ex_wemsg(SCR* sp, const CHAR_T *p, exm_t which) 153 { 154 const char *np; 155 size_t nlen; 156 157 if (p) INT2CHAR(sp, p, STRLEN(p), np, nlen); 158 else np = NULL; 159 ex_emsg(sp, np, which); 160 } 161 162 /* 163 * ex_emsg -- 164 * Display a few common ex and vi error messages. 165 * 166 * PUBLIC: void ex_emsg __P((SCR *, const char *, exm_t)); 167 */ 168 void 169 ex_emsg(SCR *sp, const char *p, exm_t which) 170 { 171 switch (which) { 172 case EXM_EMPTYBUF: 173 msgq(sp, M_ERR, "168|Buffer %s is empty", p); 174 break; 175 case EXM_FILECOUNT: 176 msgq_str(sp, M_ERR, p, 177 "144|%s: expanded into too many file names"); 178 break; 179 case EXM_LOCKED: 180 msgq(sp, M_ERR, 181 "Command failed, buffer is locked"); 182 break; 183 case EXM_NOCANON: 184 msgq(sp, M_ERR, 185 "283|The %s command requires the ex terminal interface", p); 186 break; 187 case EXM_NOCANON_F: 188 msgq(sp, M_ERR, 189 "272|That form of %s requires the ex terminal interface", 190 p); 191 break; 192 case EXM_NOFILEYET: 193 if (p == NULL) 194 msgq(sp, M_ERR, 195 "274|Command failed, no file read in yet."); 196 else 197 msgq(sp, M_ERR, 198 "173|The %s command requires that a file have already been read in", p); 199 break; 200 case EXM_NOPREVBUF: 201 msgq(sp, M_ERR, "171|No previous buffer to execute"); 202 break; 203 case EXM_NOPREVRE: 204 msgq(sp, M_ERR, "172|No previous regular expression"); 205 break; 206 case EXM_NOSUSPEND: 207 msgq(sp, M_ERR, "230|This screen may not be suspended"); 208 break; 209 case EXM_SECURE: 210 msgq(sp, M_ERR, 211 "290|The %s command is not supported when the secure edit option is set", p); 212 break; 213 case EXM_SECURE_F: 214 msgq(sp, M_ERR, 215 "284|That form of %s is not supported when the secure edit option is set", p); 216 break; 217 case EXM_USAGE: 218 msgq(sp, M_ERR, "174|Usage: %s", p); 219 break; 220 } 221 } 222