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295
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1 /*
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2 lwcc/strbuf.c
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3
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4 Copyright © 2013 William Astle
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5
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6 This file is part of LWTOOLS.
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7
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8 LWTOOLS is free software: you can redistribute it and/or modify it under the
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9 terms of the GNU General Public License as published by the Free Software
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10 Foundation, either version 3 of the License, or (at your option) any later
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11 version.
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12
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13 This program is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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16 more details.
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17
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18 You should have received a copy of the GNU General Public License along with
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19 this program. If not, see <http://www.gnu.org/licenses/>.
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20 */
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21
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22 #include <stdlib.h>
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23
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24 #include <lw_alloc.h>
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25
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26 #include "strbuf.h"
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27
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28 struct strbuf *strbuf_new(void)
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29 {
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30 struct strbuf *strbuf;
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31
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32 strbuf = lw_alloc(sizeof(struct strbuf));
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33 strbuf -> str = NULL;
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34 strbuf -> bo = 0;
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35 strbuf -> bl = 0;
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36 return strbuf;
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37 }
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38
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39 void strbuf_add(struct strbuf *strbuf, int c)
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40 {
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41 if (strbuf -> bo >= strbuf -> bl)
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42 {
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43 strbuf -> bl += 100;
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44 strbuf -> str = lw_realloc(strbuf -> str, strbuf -> bl);
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45 }
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46 strbuf -> str[strbuf -> bo++] = c;
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47 }
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48
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49 char *strbuf_end(struct strbuf *strbuf)
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50 {
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51 char *rv;
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52
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53 strbuf_add(strbuf, 0);
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54 rv = strbuf -> str;
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55 lw_free(strbuf);
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56 return rv;
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57 }
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