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annotate libmlk-core/mlk/core/err.c @ 634:3930234ab1f5

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author David Demelier <markand@malikania.fr>
date Tue, 29 Aug 2023 13:34:10 +0200
parents 4349b591c3ac
children
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1 /*
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2 * err.h -- error routines
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3 *
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4 * Copyright (c) 2020-2023 David Demelier <markand@malikania.fr>
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5 *
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6 * Permission to use, copy, modify, and/or distribute this software for any
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7 * purpose with or without fee is hereby granted, provided that the above
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8 * copyright notice and this permission notice appear in all copies.
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9 *
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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17 */
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18
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19 #include <assert.h>
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20 #include <stdio.h>
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21
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22 #include <mlk/util/util.h>
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23
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24 #include "core_p.h"
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25 #include "err.h"
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26
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27 #define ERR_MAX 128
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28 #define DEFAULT_ERR _("no error")
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29
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30 static MLK_THREAD_LOCAL char err[ERR_MAX];
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31
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32 int
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33 mlk_errf(const char *fmt, ...)
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34 {
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35 assert(fmt);
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36
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37 va_list ap;
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38
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39 va_start(ap, fmt);
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40 mlk_errva(fmt, ap);
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41 va_end(ap);
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42
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43 return -1;
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44 }
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45
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46 int
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47 mlk_errva(const char *fmt, va_list ap)
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48 {
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49 assert(fmt);
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50
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51 int ret;
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52
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53 /* Don't keep an empty string... */
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54 ret = vsnprintf(err, sizeof (err), fmt, ap);
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55
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56 if (ret < 0)
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57 mlk_util_strlcpy(err, _("unknown error"), sizeof (err));
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58 else if (ret == 0)
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59 mlk_util_strlcpy(err, DEFAULT_ERR, sizeof (err));
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60
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61 return -1;
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62 }
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63
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64 const char *
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65 mlk_err(void)
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66 {
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67 if (!err[0])
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68 mlk_util_strlcpy(err, DEFAULT_ERR, sizeof (err));
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69
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70 return err;
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71 }