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annotate lwlib/lw_stringlist.c @ 389:2d9b7ae6c329
Throw error if address overflows in extended mode
This may or may not cause extra problems due to sloppiness in dealing with
calculations that overflow in 16 bits. However, presumably it is a good idea
so unless something major pops up, it seems like a good idea.
Thanks to Erik G <erik@6809.org> for the patch.
author | William Astle <lost@l-w.ca> |
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date | Mon, 13 Jul 2015 21:37:49 -0600 |
parents | a1a88a8ddc98 |
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0
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1 /* |
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2 lw_stringlist.c |
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3 |
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4 Copyright © 2010 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 #define ___lw_stringlist_c_seen___ |
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25 #include "lw_stringlist.h" |
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26 #include "lw_string.h" |
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27 #include "lw_alloc.h" |
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28 |
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29 lw_stringlist_t lw_stringlist_create(void) |
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30 { |
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31 lw_stringlist_t s; |
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32 |
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33 |
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34 s = lw_alloc(sizeof(struct lw_stringlist_priv)); |
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35 s -> strings = NULL; |
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36 s -> nstrings = 0; |
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37 s -> cstring = 0; |
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38 |
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39 return s; |
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40 } |
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41 |
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42 void lw_stringlist_destroy(lw_stringlist_t S) |
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43 { |
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44 if (S) |
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45 { |
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46 int i; |
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47 for (i = 0; i < S -> nstrings; i++) |
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48 { |
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49 lw_free(S -> strings[i]); |
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50 } |
284
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51 lw_free(S -> strings); |
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52 lw_free(S); |
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53 } |
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54 } |
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55 |
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56 void lw_stringlist_addstring(lw_stringlist_t S, char *str) |
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57 { |
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58 S -> strings = lw_realloc(S -> strings, sizeof(char *) * (S -> nstrings + 1)); |
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59 S -> strings[S -> nstrings] = lw_strdup(str); |
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60 S -> nstrings++; |
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61 } |
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62 |
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63 void lw_stringlist_reset(lw_stringlist_t S) |
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64 { |
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65 S -> cstring = 0; |
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66 } |
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67 |
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68 char *lw_stringlist_current(lw_stringlist_t S) |
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69 { |
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70 if (S -> cstring >= S -> nstrings) |
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71 return NULL; |
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72 return S -> strings[S -> cstring]; |
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73 } |
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74 |
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75 char *lw_stringlist_next(lw_stringlist_t S) |
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76 { |
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77 S -> cstring++; |
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78 return lw_stringlist_current(S); |
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79 } |
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80 |
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81 int lw_stringlist_nstrings(lw_stringlist_t S) |
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82 { |
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83 return S -> nstrings; |
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84 } |
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85 |
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86 lw_stringlist_t lw_stringlist_copy(lw_stringlist_t S) |
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87 { |
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88 lw_stringlist_t r; |
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89 |
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90 r = lw_alloc(sizeof(lw_stringlist_t)); |
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91 r -> nstrings = S -> nstrings; |
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92 if (S -> nstrings) |
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93 { |
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94 int i; |
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95 |
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96 r -> strings = lw_alloc(sizeof(char *) * S -> nstrings); |
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97 for (i = 0; i < S -> nstrings; i++) |
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98 { |
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99 r -> strings[i] = lw_strdup(S -> strings[i]); |
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100 } |
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101 } |
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102 return r; |
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103 } |