1 /* $NetBSD: lf.cpp,v 1.1.1.1 2016/01/13 18:41:48 christos Exp $ */ 2 3 // -*- C++ -*- 4 /* Copyright (C) 1989, 1990, 1991, 1992, 2004 Free Software Foundation, Inc. 5 Written by James Clark (jjc@jclark.com) 6 7 This file is part of groff. 8 9 groff is free software; you can redistribute it and/or modify it under 10 the terms of the GNU General Public License as published by the Free 11 Software Foundation; either version 2, or (at your option) any later 12 version. 13 14 groff is distributed in the hope that it will be useful, but WITHOUT ANY 15 WARRANTY; without even the implied warranty of MERCHANTABILITY or 16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 17 for more details. 18 19 You should have received a copy of the GNU General Public License along 20 with groff; see the file COPYING. If not, write to the Free Software 21 Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */ 22 23 #include <ctype.h> 24 25 #include "lib.h" 26 #include "cset.h" 27 #include "stringclass.h" 28 29 extern void change_filename(const char *); 30 extern void change_lineno(int); 31 32 int interpret_lf_args(const char *p) 33 { 34 while (*p == ' ') 35 p++; 36 if (!csdigit(*p)) 37 return 0; 38 int ln = 0; 39 do { 40 ln *= 10; 41 ln += *p++ - '0'; 42 } while (csdigit(*p)); 43 if (*p != ' ' && *p != '\n' && *p != '\0') 44 return 0; 45 while (*p == ' ') 46 p++; 47 if (*p == '\0' || *p == '\n') { 48 change_lineno(ln); 49 return 1; 50 } 51 const char *q; 52 for (q = p; 53 *q != '\0' && *q != ' ' && *q != '\n' && *q != '\\'; 54 q++) 55 ; 56 string tem(p, q - p); 57 while (*q == ' ') 58 q++; 59 if (*q != '\n' && *q != '\0') 60 return 0; 61 tem += '\0'; 62 change_filename(tem.contents()); 63 change_lineno(ln); 64 return 1; 65 } 66