1 /* $Id: eqn.c,v 1.4 2011/03/22 09:48:13 kristaps Exp $ */ 2 /* 3 * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 #ifdef HAVE_CONFIG_H 18 #include "config.h" 19 #endif 20 21 #include <assert.h> 22 #include <stdio.h> 23 #include <stdlib.h> 24 #include <string.h> 25 #include <time.h> 26 27 #include "mandoc.h" 28 #include "libmandoc.h" 29 #include "libroff.h" 30 31 /* ARGSUSED */ 32 enum rofferr 33 eqn_read(struct eqn_node **epp, int ln, const char *p, int offs) 34 { 35 size_t sz; 36 struct eqn_node *ep; 37 38 if (0 == strcmp(p, ".EN")) { 39 *epp = NULL; 40 return(ROFF_EQN); 41 } 42 43 ep = *epp; 44 45 sz = strlen(&p[offs]); 46 ep->eqn.data = mandoc_realloc(ep->eqn.data, ep->eqn.sz + sz + 1); 47 if (0 == ep->eqn.sz) 48 *ep->eqn.data = '\0'; 49 50 ep->eqn.sz += sz; 51 strlcat(ep->eqn.data, &p[offs], ep->eqn.sz + 1); 52 return(ROFF_IGN); 53 } 54 55 struct eqn_node * 56 eqn_alloc(int pos, int line) 57 { 58 struct eqn_node *p; 59 60 p = mandoc_calloc(1, sizeof(struct eqn_node)); 61 p->eqn.line = line; 62 p->eqn.pos = pos; 63 64 return(p); 65 } 66 67 /* ARGSUSED */ 68 void 69 eqn_end(struct eqn_node *e) 70 { 71 72 /* Nothing to do. */ 73 } 74 75 void 76 eqn_free(struct eqn_node *p) 77 { 78 79 free(p->eqn.data); 80 free(p); 81 } 82