10Sstevel@tonic-gate /* 20Sstevel@tonic-gate * CDDL HEADER START 30Sstevel@tonic-gate * 40Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*13093SRoger.Faulkner@Oracle.COM * Common Development and Distribution License (the "License"). 6*13093SRoger.Faulkner@Oracle.COM * You may not use this file except in compliance with the License. 70Sstevel@tonic-gate * 80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 100Sstevel@tonic-gate * See the License for the specific language governing permissions 110Sstevel@tonic-gate * and limitations under the License. 120Sstevel@tonic-gate * 130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 180Sstevel@tonic-gate * 190Sstevel@tonic-gate * CDDL HEADER END 200Sstevel@tonic-gate */ 21*13093SRoger.Faulkner@Oracle.COM 220Sstevel@tonic-gate /* 23*13093SRoger.Faulkner@Oracle.COM * Copyright (c) 1990, 2010, Oracle and/or its affiliates. All rights reserved. 240Sstevel@tonic-gate */ 250Sstevel@tonic-gate 260Sstevel@tonic-gate #include <stdio.h> 270Sstevel@tonic-gate #include <string.h> 280Sstevel@tonic-gate #include "util.h" 290Sstevel@tonic-gate 300Sstevel@tonic-gate 310Sstevel@tonic-gate 320Sstevel@tonic-gate 330Sstevel@tonic-gate /* 340Sstevel@tonic-gate * This is just like fgets, but recognizes that "\\n" signals a continuation 350Sstevel@tonic-gate * of a line 360Sstevel@tonic-gate */ 370Sstevel@tonic-gate char * 38*13093SRoger.Faulkner@Oracle.COM getaline(line, maxlen, fp) 390Sstevel@tonic-gate char *line; 400Sstevel@tonic-gate int maxlen; 410Sstevel@tonic-gate FILE *fp; 420Sstevel@tonic-gate { 430Sstevel@tonic-gate register char *p; 440Sstevel@tonic-gate register char *start; 450Sstevel@tonic-gate int c; 460Sstevel@tonic-gate 470Sstevel@tonic-gate start = line; 480Sstevel@tonic-gate 490Sstevel@tonic-gate nextline: 500Sstevel@tonic-gate if (fgets(start, maxlen, fp) == NULL) { 510Sstevel@tonic-gate return (NULL); 520Sstevel@tonic-gate } 530Sstevel@tonic-gate for (p = start; *p; p++) { 540Sstevel@tonic-gate if (*p == '\n') { 550Sstevel@tonic-gate if (p > start && *(p-1) == '\\') { 560Sstevel@tonic-gate start = p - 1; 570Sstevel@tonic-gate maxlen++; 580Sstevel@tonic-gate goto nextline; 590Sstevel@tonic-gate } else { 600Sstevel@tonic-gate return (line); 610Sstevel@tonic-gate } 620Sstevel@tonic-gate } 630Sstevel@tonic-gate maxlen--; 640Sstevel@tonic-gate } 650Sstevel@tonic-gate 660Sstevel@tonic-gate /* 670Sstevel@tonic-gate * Input line is too long. Rest of the line needs to be discarded. 680Sstevel@tonic-gate * Reinsert the last char into the stream. This is done so that 690Sstevel@tonic-gate * in case the last char read is '\' and it is followed by a '\n' 700Sstevel@tonic-gate * then the next line too can be discarded. 710Sstevel@tonic-gate */ 720Sstevel@tonic-gate if (p > start) 730Sstevel@tonic-gate (void) ungetc(*(p-1), fp); 740Sstevel@tonic-gate 750Sstevel@tonic-gate /* 760Sstevel@tonic-gate * Discard the rest of the line 770Sstevel@tonic-gate */ 780Sstevel@tonic-gate while ((c = getc(fp)) != EOF) { 790Sstevel@tonic-gate if (c == '\n') 800Sstevel@tonic-gate break; 810Sstevel@tonic-gate else if (c == '\\') { 820Sstevel@tonic-gate /* 830Sstevel@tonic-gate * Ignore the next character except EOF 840Sstevel@tonic-gate */ 850Sstevel@tonic-gate if (getc(fp) == EOF) 860Sstevel@tonic-gate break; 870Sstevel@tonic-gate } 880Sstevel@tonic-gate } 890Sstevel@tonic-gate 900Sstevel@tonic-gate maxlen = strlen(line) + 1; 910Sstevel@tonic-gate 920Sstevel@tonic-gate /* 930Sstevel@tonic-gate * Certain functions expects a newline in the buffer. 940Sstevel@tonic-gate */ 950Sstevel@tonic-gate if (maxlen >= 2) 960Sstevel@tonic-gate line[maxlen - 2] = '\n'; 970Sstevel@tonic-gate (void) fprintf(stderr, "Following line too long - remaining chars " 980Sstevel@tonic-gate "ignored\n--- %s", line); 990Sstevel@tonic-gate return (line); 1000Sstevel@tonic-gate } 1010Sstevel@tonic-gate 1020Sstevel@tonic-gate 1030Sstevel@tonic-gate void 1040Sstevel@tonic-gate fatal(message) 1050Sstevel@tonic-gate char *message; 1060Sstevel@tonic-gate { 1070Sstevel@tonic-gate (void) fprintf(stderr, "fatal error: %s\n", message); 1080Sstevel@tonic-gate exit(1); 1090Sstevel@tonic-gate } 110