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25 Sat, 06 Aug 2016 13:52:44 -0000
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26 From: David Bremner <david@tethera.net>
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27 To: notmuch@notmuchmail.org
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28 Subject: [PATCH 4/9] lib: extend private string map API with iterators
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29 Date: Sat, 6 Aug 2016 22:52:34 +0900
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30 Message-Id: <1470491559-3946-5-git-send-email-david@tethera.net>
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33 References: <1470491559-3946-1-git-send-email-david@tethera.net>
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38 <notmuch.notmuchmail.org>
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48 Support for prefix based iterators is perhaps overengineering, but I
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49 wanted to mimic the existing database_config API.
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51 lib/notmuch-private.h | 21 ++++++++++++++-
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52 lib/string-map.c | 72 +++++++++++++++++++++++++++++++++++++++++++++++++++
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53 2 files changed, 92 insertions(+), 1 deletion(-)
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55 diff --git a/lib/notmuch-private.h b/lib/notmuch-private.h
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56 index 5abde88..65f7ead 100644
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57 --- a/lib/notmuch-private.h
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58 +++ b/lib/notmuch-private.h
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59 @@ -539,7 +539,7 @@ _notmuch_string_list_sort (notmuch_string_list_t *list);
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62 typedef struct _notmuch_string_map notmuch_string_map_t;
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64 +typedef struct _notmuch_string_map_iterator notmuch_string_map_iterator_t;
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65 notmuch_string_map_t *
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66 _notmuch_string_map_create (const void *ctx);
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68 @@ -551,6 +551,25 @@ _notmuch_string_map_append (notmuch_string_map_t *map,
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70 _notmuch_string_map_get (notmuch_string_map_t *map, const char *key);
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72 +notmuch_string_map_iterator_t *
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73 +_notmuch_string_map_iterator_create (notmuch_string_map_t *map, const char *key,
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74 + notmuch_bool_t exact);
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77 +_notmuch_string_map_iterator_valid (notmuch_string_map_iterator_t *iter);
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80 +_notmuch_string_map_iterator_move_to_next (notmuch_string_map_iterator_t *iter);
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83 +_notmuch_string_map_iterator_key (notmuch_string_map_iterator_t *iterator);
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86 +_notmuch_string_map_iterator_value (notmuch_string_map_iterator_t *iterator);
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89 +_notmuch_string_map_iterator_destroy (notmuch_string_map_iterator_t *iterator);
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94 diff --git a/lib/string-map.c b/lib/string-map.c
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95 index 0491a10..591ff6d 100644
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96 --- a/lib/string-map.c
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97 +++ b/lib/string-map.c
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98 @@ -38,6 +38,12 @@ struct _notmuch_string_map {
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99 notmuch_string_pair_t *pairs;
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102 +struct _notmuch_string_map_iterator {
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103 + notmuch_string_pair_t *current;
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104 + notmuch_bool_t exact;
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108 notmuch_string_map_t *
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109 _notmuch_string_map_create (const void *ctx)
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111 @@ -151,3 +157,69 @@ _notmuch_string_map_get (notmuch_string_map_t *map, const char *key)
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113 return pair->value;
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116 +notmuch_string_map_iterator_t *
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117 +_notmuch_string_map_iterator_create (notmuch_string_map_t *map, const char *key,
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118 + notmuch_bool_t exact)
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120 + notmuch_string_map_iterator_t *iter;
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122 + _notmuch_string_map_sort (map);
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124 + iter = talloc (map, notmuch_string_map_iterator_t);
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125 + if (unlikely (iter == NULL))
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128 + iter->key = talloc_strdup (iter, key);
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129 + iter->exact = exact;
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130 + iter->current = bsearch_first (map->pairs, map->length, key, exact);
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135 +_notmuch_string_map_iterator_valid (notmuch_string_map_iterator_t *iterator)
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137 + if (iterator->current == NULL)
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141 + if (iterator->current->key == NULL)
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144 + return (0 == string_cmp (iterator->key, iterator->current->key, iterator->exact));
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149 +_notmuch_string_map_iterator_move_to_next (notmuch_string_map_iterator_t *iterator)
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152 + if (! _notmuch_string_map_iterator_valid (iterator))
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155 + (iterator->current)++;
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159 +_notmuch_string_map_iterator_key (notmuch_string_map_iterator_t *iterator)
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161 + if (! _notmuch_string_map_iterator_valid (iterator))
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164 + return iterator->current->key;
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168 +_notmuch_string_map_iterator_value (notmuch_string_map_iterator_t *iterator)
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170 + if (! _notmuch_string_map_iterator_valid (iterator))
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173 + return iterator->current->value;
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177 +_notmuch_string_map_iterator_destroy (notmuch_string_map_iterator_t *iterator)
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179 + talloc_free (iterator);
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