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#ifndef lint static char Rcs_Id[] = "$Id: xgets.c,v 1.21 1994/01/25 07:12:22 geoff Exp $"; #endif /* * Copyright 1987, 1988, 1989, 1992, 1993, Geoff Kuenning, Granada Hills, CA * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All modifications to the source code must be clearly marked as * such. Binary redistributions based on modified source code * must be clearly marked as modified versions in the documentation * and/or other materials provided with the distribution. * 4. All advertising materials mentioning features or use of this software * must display the following acknowledgment: * This product includes software developed by Geoff Kuenning and * other unpaid contributors. * 5. The name of Geoff Kuenning may not be used to endorse or promote * products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY GEOFF KUENNING AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL GEOFF KUENNING OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * $Log: xgets.c,v $ * Revision 1.21 1994/01/25 07:12:22 geoff * Get rid of all old RCS log lines in preparation for the 3.1 release. * */ #include "config.h" #include "ispell.h" #include "proto.h" char * xgets P ((char * string, int size, FILE * stream)); #ifndef MAXINCLUDEFILES #define MAXINCLUDEFILES 1 /* maximum number of new files in stack */ #endif /* * xgets () acts just like gets () except that if a line matches * "&Include_File&<something>" xgets () will start reading from the * file <something>. * * Andrew Vignaux -- andrew@vuwcomp Fri May 8 16:40:23 NZST 1987 * modified * Mark Davies -- mark@vuwcomp Mon May 11 22:38:10 NZST 1987 */ char * xgets (str, size, stream) char str[]; int size; FILE * stream; { #if MAXINCLUDEFILES == 0 return fgets (str, size, stream); #else static char * Include_File = DEFINCSTR; static int Include_Len = 0; static FILE * F[MAXINCLUDEFILES+1]; static FILE ** current_F = F; char * s = str; int c; /* read the environment variable if we havent already */ if (Include_Len == 0) { char * env_variable; if ((env_variable = getenv (INCSTRVAR)) != NULL) Include_File = env_variable; Include_Len = strlen (Include_File); /* initialise the file stack */ *current_F = stream; } for ( ; ; ) { c = '\0'; if ((s - str) + 1 < size && (c = getc (*current_F)) != EOF && c != '\n') { *s++ = (char) c; continue; } *s = '\0'; /* end of line */ if (c == EOF) { if (current_F == F) /* if end of standard input */ { if (s == str) return (NULL); } else { (void) fclose (*(current_F--)); if (s == str) continue; } } if (incfileflag != 0 && strncmp (str, Include_File, (unsigned int) Include_Len) == 0) { char * file_name = str + Include_Len; if (current_F - F < MAXINCLUDEFILES && strlen (file_name) != 0) { FILE * f; if (f = fopen (file_name, "r")) *(++current_F) = f; } s = str; continue; } break; } return (str); #endif }
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