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1 /*
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2 * Copyright (c) 2003, 2007-14 Matteo Frigo
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3 * Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
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4 *
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5 * This program is free software; you can redistribute it and/or modify
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6 * it under the terms of the GNU General Public License as published by
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7 * the Free Software Foundation; either version 2 of the License, or
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8 * (at your option) any later version.
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9 *
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10 * This program is distributed in the hope that it will be useful,
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 * GNU General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU General Public License
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16 * along with this program; if not, write to the Free Software
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17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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18 *
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19 */
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20
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21 #include "api.h"
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22 #include <stdio.h>
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23
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24 #define BUFSZ 256
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25
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26 typedef struct {
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27 printer super;
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28 FILE *f;
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29 char buf[BUFSZ];
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30 char *bufw;
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31 } P;
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32
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33 static void myflush(P *p)
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34 {
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35 fwrite(p->buf, 1, p->bufw - p->buf, p->f);
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36 p->bufw = p->buf;
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37 }
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38
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39 static void myputchr(printer *p_, char c)
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40 {
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41 P *p = (P *) p_;
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42 if (p->bufw >= p->buf + BUFSZ)
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43 myflush(p);
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44 *p->bufw++ = c;
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45 }
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46
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47 static void mycleanup(printer *p_)
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48 {
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49 P *p = (P *) p_;
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50 myflush(p);
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51 }
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52
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53 printer *X(mkprinter_file)(FILE *f)
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54 {
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55 P *p = (P *) X(mkprinter)(sizeof(P), myputchr, mycleanup);
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56 p->f = f;
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57 p->bufw = p->buf;
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58 return &p->super;
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59 }
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