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annotate lwlib/lw_strbuf.c @ 540:98d68c27f610

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Added tag lwtools-4.20 for changeset 0b0f4d5339f9
author William Astle <lost@l-w.ca>
date Wed, 17 Aug 2022 16:50:53 -0600
parents 670ea8f90212
children
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1 /*
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2 lwlib/lw_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 #include "lw_strbuf.h"
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26
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27 struct lw_strbuf *lw_strbuf_new(void)
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28 {
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29 struct lw_strbuf *lw_strbuf;
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30
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31 lw_strbuf = lw_alloc(sizeof(struct lw_strbuf));
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32 lw_strbuf -> str = NULL;
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33 lw_strbuf -> bo = 0;
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34 lw_strbuf -> bl = 0;
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35 return lw_strbuf;
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36 }
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37
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38 void lw_strbuf_add(struct lw_strbuf *lw_strbuf, int c)
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39 {
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40 if (lw_strbuf -> bo >= lw_strbuf -> bl)
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41 {
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42 lw_strbuf -> bl += 100;
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43 lw_strbuf -> str = lw_realloc(lw_strbuf -> str, lw_strbuf -> bl);
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44 }
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45 lw_strbuf -> str[lw_strbuf -> bo++] = c;
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46 }
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47
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48 char *lw_strbuf_end(struct lw_strbuf *lw_strbuf)
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49 {
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50 char *rv;
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51
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52 lw_strbuf_add(lw_strbuf, 0);
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53 rv = lw_strbuf -> str;
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54 lw_free(lw_strbuf);
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55 return rv;
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56 }