Mercurial > hg > index.cgi

annotate lwlib/lw_strpool.c @ 500:733fd05ca2a8

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Initialize temporary line structures properly Apparently, not initializing all elements of a struct can lead to random problems if something somewhere decides it should reference one of those uninitialized fields. Who knew. Set the temporary line_t structure to zeroes before passing it into anything when calculating the stuff for "object" output which should at least make things predictable. This seems to fix a crash reported by "strick" in Discord.
author William Astle <lost@l-w.ca>
date Thu, 29 Aug 2019 17:00:17 -0600
parents 670ea8f90212
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
304
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
1 /*
308
670ea8f90212 Converted preproc logic to library and moved some utility stuff to lwlib
William Astle <lost@l-w.ca>
parents: 304
diff changeset
2 lwlib/lw_strpool.c
304
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
3
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
4 Copyright © 2013 William Astle
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
5
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
6 This file is part of LWTOOLS.
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
7
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
8 LWTOOLS is free software: you can redistribute it and/or modify it under the
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
9 terms of the GNU General Public License as published by the Free Software
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
10 Foundation, either version 3 of the License, or (at your option) any later
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
11 version.
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
12
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
13 This program is distributed in the hope that it will be useful, but WITHOUT
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
16 more details.
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
17
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
18 You should have received a copy of the GNU General Public License along with
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
19 this program. If not, see <http://www.gnu.org/licenses/>.
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
20 */
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
21
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
22 #include <stdlib.h>
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
23 #include <string.h>
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
24
308
670ea8f90212 Converted preproc logic to library and moved some utility stuff to lwlib
William Astle <lost@l-w.ca>
parents: 304
diff changeset
25 #include "lw_alloc.h"
670ea8f90212 Converted preproc logic to library and moved some utility stuff to lwlib
William Astle <lost@l-w.ca>
parents: 304
diff changeset
26 #include "lw_string.h"
670ea8f90212 Converted preproc logic to library and moved some utility stuff to lwlib
William Astle <lost@l-w.ca>
parents: 304
diff changeset
27 #include "lw_strpool.h"
304
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
28
308
670ea8f90212 Converted preproc logic to library and moved some utility stuff to lwlib
William Astle <lost@l-w.ca>
parents: 304
diff changeset
29 struct lw_strpool *lw_strpool_create(void)
304
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
30 {
308
670ea8f90212 Converted preproc logic to library and moved some utility stuff to lwlib
William Astle <lost@l-w.ca>
parents: 304
diff changeset
31 struct lw_strpool *sp;
304
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
32
308
670ea8f90212 Converted preproc logic to library and moved some utility stuff to lwlib
William Astle <lost@l-w.ca>
parents: 304
diff changeset
33 sp = lw_alloc(sizeof(struct lw_strpool));
304
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
34 sp -> nstrs = 0;
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
35 sp -> strs = NULL;
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
36 return sp;
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
37 }
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
38
308
670ea8f90212 Converted preproc logic to library and moved some utility stuff to lwlib
William Astle <lost@l-w.ca>
parents: 304
diff changeset
39 extern void lw_strpool_free(struct lw_strpool *sp)
304
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
40 {
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
41 int i;
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
42
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
43 for (i = 0; i < sp -> nstrs; i++)
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
44 lw_free(sp -> strs[i]);
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
45 lw_free(sp -> strs);
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
46 lw_free(sp);
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
47 }
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
48
308
670ea8f90212 Converted preproc logic to library and moved some utility stuff to lwlib
William Astle <lost@l-w.ca>
parents: 304
diff changeset
49 char *lw_strpool_strdup(struct lw_strpool *sp, const char *s)
304
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
50 {
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
51 int i;
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
52
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
53 if (!s)
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
54 return NULL;
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
55
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
56 /* first do a fast scan for a pointer match */
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
57 for (i = 0; i < sp -> nstrs; i++)
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
58 if (sp -> strs[i] == s)
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
59 return sp -> strs[i];
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
60
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
61 /* no match - do a slow scan for a string match */
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
62 for (i = 0; i < sp -> nstrs; i++)
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
63 if (strcmp(sp -> strs[i], s) == 0)
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
64 return sp -> strs[i];
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
65
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
66 /* no match - create a new string entry */
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
67 sp -> strs = lw_realloc(sp -> strs, sizeof(char *) * (sp -> nstrs + 1));
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
68 sp -> strs[sp -> nstrs] = lw_strdup(s);
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
69 sp -> nstrs++;
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
70 return sp -> strs[sp -> nstrs - 1];
d85d173ba120 Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
diff changeset
71 }