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Annotation of src/usr.bin/mandoc/eqn.c, Revision 1.2

1.2     ! schwarze    1: /*     $Id: eqn.c,v 1.1 2011/03/21 00:48:02 schwarze Exp $ */
1.1       schwarze    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 <stdlib.h>
                     23: #include <string.h>
                     24:
                     25: #include "mandoc.h"
                     26: #include "roff.h"
                     27: #include "libmandoc.h"
                     28: #include "libroff.h"
                     29:
                     30: /* ARGSUSED */
                     31: enum rofferr
                     32: eqn_read(struct eqn_node **epp, int ln, const char *p, int offs)
                     33: {
                     34:        size_t           sz;
                     35:        struct eqn_node *ep;
                     36:
                     37:        if (0 == strcmp(p, ".EN")) {
                     38:                *epp = NULL;
                     39:                return(ROFF_EQN);
                     40:        }
                     41:
                     42:        ep = *epp;
                     43:
                     44:        sz = strlen(&p[offs]);
                     45:        ep->eqn.data = mandoc_realloc(ep->eqn.data, ep->eqn.sz + sz + 1);
                     46:        if (0 == ep->eqn.sz)
                     47:                *ep->eqn.data = '\0';
                     48:
                     49:        ep->eqn.sz += sz;
                     50:        strlcat(ep->eqn.data, &p[offs], ep->eqn.sz + 1);
                     51:        return(ROFF_IGN);
                     52: }
                     53:
                     54: struct eqn_node *
                     55: eqn_alloc(int pos, int line)
                     56: {
                     57:        struct eqn_node *p;
                     58:
                     59:        p = mandoc_calloc(1, sizeof(struct eqn_node));
                     60:        p->eqn.line = line;
                     61:        p->eqn.pos = pos;
                     62:
                     63:        return(p);
                     64: }
                     65:
1.2     ! schwarze   66: /* ARGSUSED */
1.1       schwarze   67: void
                     68: eqn_end(struct eqn_node *e)
                     69: {
                     70:
                     71:        /* Nothing to do. */
                     72: }
                     73:
                     74: void
                     75: eqn_free(struct eqn_node *p)
                     76: {
                     77:
                     78:        free(p->eqn.data);
                     79:        free(p);
                     80: }