Wed, 24 Jul 2024 23:45:31 +0200
fix dav add-repo crash in case .dav/config.xml doesn't exist
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1 | /* |
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2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. |
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3 | * |
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4 | * Copyright 2024 Mike Becker, Olaf Wintermann All rights reserved. |
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5 | * |
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6 | * Redistribution and use in source and binary forms, with or without |
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7 | * modification, are permitted provided that the following conditions are met: |
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8 | * |
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9 | * 1. Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * |
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12 | * 2. Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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26 | * POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |
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29 | #include "cx/iterator.h" |
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30 | |
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31 | #include <string.h> |
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32 | |
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33 | static bool cx_iter_valid(void const *it) { |
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34 | struct cx_iterator_s const *iter = it; |
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35 | return iter->index < iter->elem_count; |
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36 | } |
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37 | |
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38 | static void *cx_iter_current(void const *it) { |
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39 | struct cx_iterator_s const *iter = it; |
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40 | return iter->elem_handle; |
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41 | } |
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42 | |
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43 | static void cx_iter_next_fast(void *it) { |
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44 | struct cx_iterator_s *iter = it; |
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45 | if (iter->base.remove) { |
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46 | iter->base.remove = false; |
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47 | iter->elem_count--; |
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48 | // only move the last element when we are not currently aiming |
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49 | // at the last element already |
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50 | if (iter->index < iter->elem_count) { |
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51 | void *last = ((char *) iter->src_handle.m) |
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52 | + iter->elem_count * iter->elem_size; |
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53 | memcpy(iter->elem_handle, last, iter->elem_size); |
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54 | } |
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55 | } else { |
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56 | iter->index++; |
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57 | iter->elem_handle = ((char *) iter->elem_handle) + iter->elem_size; |
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58 | } |
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59 | } |
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60 | |
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61 | static void cx_iter_next_slow(void *it) { |
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62 | struct cx_iterator_s *iter = it; |
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63 | if (iter->base.remove) { |
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64 | iter->base.remove = false; |
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65 | iter->elem_count--; |
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66 | |
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67 | // number of elements to move |
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68 | size_t remaining = iter->elem_count - iter->index; |
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69 | if (remaining > 0) { |
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70 | memmove( |
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71 | iter->elem_handle, |
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72 | ((char *) iter->elem_handle) + iter->elem_size, |
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73 | remaining * iter->elem_size |
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74 | ); |
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75 | } |
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76 | } else { |
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77 | iter->index++; |
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78 | iter->elem_handle = ((char *) iter->elem_handle) + iter->elem_size; |
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79 | } |
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80 | } |
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81 | |
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82 | CxIterator cxMutIterator( |
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83 | void *array, |
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84 | size_t elem_size, |
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85 | size_t elem_count, |
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86 | bool remove_keeps_order |
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87 | ) { |
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88 | CxIterator iter; |
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89 | |
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90 | iter.index = 0; |
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91 | iter.src_handle.m = array; |
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92 | iter.elem_handle = array; |
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93 | iter.elem_size = elem_size; |
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94 | iter.elem_count = array == NULL ? 0 : elem_count; |
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95 | iter.base.valid = cx_iter_valid; |
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96 | iter.base.current = cx_iter_current; |
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97 | iter.base.next = remove_keeps_order ? cx_iter_next_slow : cx_iter_next_fast; |
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98 | iter.base.remove = false; |
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99 | iter.base.mutating = true; |
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100 | |
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101 | return iter; |
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102 | } |
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103 | |
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104 | CxIterator cxIterator( |
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105 | void const *array, |
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106 | size_t elem_size, |
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107 | size_t elem_count |
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108 | ) { |
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109 | CxIterator iter = cxMutIterator((void*)array, elem_size, elem_count, false); |
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110 | iter.base.mutating = false; |
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111 | return iter; |
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112 | } |