Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/lib-index/mail-index-transaction-view.c @ 5855:fd6ff4d9cab1 HEAD

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Removed view->hdr. Use view->map->hdr directly.
author Timo Sirainen <tss@iki.fi>
date Sun, 01 Jul 2007 22:11:41 +0300
parents 3bccf203fa91
children 5d3a941444f1
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1 /* Copyright (C) 2004-2006 Timo Sirainen */
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2
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3 #include "lib.h"
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4 #include "array.h"
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5 #include "buffer.h"
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6 #include "seq-range-array.h"
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7 #include "mail-index-private.h"
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8 #include "mail-index-view-private.h"
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9 #include "mail-index-transaction-private.h"
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10
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11 struct mail_index_view_transaction {
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12 struct mail_index_view view;
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13 struct mail_index_view_vfuncs *super;
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14 struct mail_index_transaction *t;
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15
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16 struct mail_index_header hdr;
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17 };
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18
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19 static void _tview_close(struct mail_index_view *view)
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20 {
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21 struct mail_index_view_transaction *tview =
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22 (struct mail_index_view_transaction *)view;
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23 struct mail_index_transaction *t = tview->t;
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25 tview->super->close(view);
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26 mail_index_transaction_unref(&t);
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27 }
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29 static uint32_t _tview_get_message_count(struct mail_index_view *view)
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30 {
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31 struct mail_index_view_transaction *tview =
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32 (struct mail_index_view_transaction *)view;
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33
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34 return view->map->hdr.messages_count +
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35 (tview->t->last_new_seq == 0 ? 0 :
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36 tview->t->last_new_seq - tview->t->first_new_seq);
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37 }
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38
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39 static const struct mail_index_header *
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40 _tview_get_header(struct mail_index_view *view)
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41 {
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42 struct mail_index_view_transaction *tview =
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43 (struct mail_index_view_transaction *)view;
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44 const struct mail_index_header *hdr;
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45 const struct mail_index_record *recs;
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46 unsigned int count;
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47
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48 /* FIXME: header counters may not be correct */
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49 hdr = tview->super->get_header(view);
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50
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51 if (array_is_created(&tview->t->appends)) {
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52 /* update next_uid from appends, if UIDs have been given yet */
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53 mail_index_transaction_sort_appends(tview->t);
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54
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55 recs = array_get(&tview->t->appends, &count);
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56 if (count > 0 && recs[count-1].uid != 0) {
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57 i_assert(recs[count-1].uid >= hdr->next_uid);
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58 tview->hdr = *hdr;
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59 tview->hdr.next_uid = recs[count-1].uid + 1;
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60 hdr = &tview->hdr;
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61 }
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62 }
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63 return hdr;
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64 }
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65
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66 static int _tview_lookup_full(struct mail_index_view *view, uint32_t seq,
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67 struct mail_index_map **map_r,
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68 const struct mail_index_record **rec_r)
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69 {
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70 struct mail_index_view_transaction *tview =
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71 (struct mail_index_view_transaction *)view;
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72 int ret;
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73
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74 if (seq >= tview->t->first_new_seq) {
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75 /* FIXME: is this right to return index map..?
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76 it's not there yet. */
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77 *map_r = view->index->map;
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78 *rec_r = mail_index_transaction_lookup(tview->t, seq);
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79 return 1;
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80 }
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81
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82 ret = tview->super->lookup_full(view, seq, map_r, rec_r);
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83 if (ret <= 0)
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84 return ret;
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85
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86 /* if we're expunged within this transaction, return 0 */
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87 return array_is_created(&tview->t->expunges) &&
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88 seq_range_exists(&tview->t->expunges, seq) ? 0 : 1;
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89
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90 }
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91
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92 static int _tview_lookup_uid(struct mail_index_view *view, uint32_t seq,
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93 uint32_t *uid_r)
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94 {
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95 struct mail_index_view_transaction *tview =
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96 (struct mail_index_view_transaction *)view;
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97
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98 if (seq >= tview->t->first_new_seq) {
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99 *uid_r = mail_index_transaction_lookup(tview->t, seq)->uid;
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100 return 0;
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101 } else {
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102 return tview->super->lookup_uid(view, seq, uid_r);
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103 }
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104 }
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105
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106 static int _tview_lookup_uid_range(struct mail_index_view *view,
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107 uint32_t first_uid, uint32_t last_uid,
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108 uint32_t *first_seq_r, uint32_t *last_seq_r)
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109 {
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110 struct mail_index_view_transaction *tview =
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111 (struct mail_index_view_transaction *)view;
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112
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113 if (tview->super->lookup_uid_range(view, first_uid, last_uid,
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114 first_seq_r, last_seq_r) < 0)
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115 return -1;
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116
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117 /* FIXME: we don't need this function yet.. new UIDs might be 0 as
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118 well.. */
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119
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120 if (*first_seq_r == 0) {
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121 /* nothing found, either doesn't exist or it's completely
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122 newly appended. */
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123 } else if (*last_seq_r + 1 == tview->t->first_new_seq) {
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124 /* last_seq_r may be growed from transactions */
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125 }
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126
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127 return 0;
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128 }
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129
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130 static int _tview_lookup_first(struct mail_index_view *view,
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131 enum mail_flags flags, uint8_t flags_mask,
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132 uint32_t *seq_r)
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133 {
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134 struct mail_index_view_transaction *tview =
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135 (struct mail_index_view_transaction *)view;
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136 const struct mail_index_record *rec;
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137 unsigned int append_count;
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138 uint32_t seq, message_count;
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139
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140 if (tview->super->lookup_first(view, flags, flags_mask, seq_r) < 0)
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141 return -1;
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142
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143 if (*seq_r != 0)
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144 return 0;
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145
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146 rec = array_get(&tview->t->appends, &append_count);
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147 seq = tview->t->first_new_seq;
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148 message_count = tview->t->last_new_seq;
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149 i_assert(append_count == message_count - seq + 1);
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150
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151 for (; seq <= message_count; seq++, rec++) {
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152 if ((rec->flags & flags_mask) == (uint8_t)flags) {
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153 *seq_r = seq;
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154 break;
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155 }
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156 }
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157
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158 return 0;
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159 }
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160
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161 static int
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162 _tview_lookup_ext_full(struct mail_index_view *view, uint32_t seq,
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163 uint32_t ext_id, struct mail_index_map **map_r,
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164 const void **data_r)
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165 {
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166 struct mail_index_view_transaction *tview =
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167 (struct mail_index_view_transaction *)view;
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168 const ARRAY_TYPE(seq_array) *ext_buf;
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169 const void *data;
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170 unsigned int idx;
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171
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172 i_assert(ext_id < array_count(&view->index->extensions));
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173
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174 *map_r = view->index->map;
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175
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176 if (array_is_created(&tview->t->ext_rec_updates) &&
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177 ext_id < array_count(&tview->t->ext_rec_updates)) {
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178 /* there are some ext updates in transaction.
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179 see if there's any for this sequence. */
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180 ext_buf = array_idx(&tview->t->ext_rec_updates, ext_id);
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181 if (array_is_created(ext_buf) &&
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182 mail_index_seq_array_lookup(ext_buf, seq, &idx)) {
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183 data = array_idx(ext_buf, idx);
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184 *data_r = CONST_PTR_OFFSET(data, sizeof(uint32_t));
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185 return 1;
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186 }
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187 }
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188
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189 /* not updated, return the existing value */
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190 if (seq < tview->t->first_new_seq) {
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191 return tview->super->lookup_ext_full(view, seq, ext_id,
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192 map_r, data_r);
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193 }
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194
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195 *data_r = NULL;
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196 return 1;
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197 }
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198
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199 static int _tview_get_header_ext(struct mail_index_view *view,
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200 struct mail_index_map *map, uint32_t ext_id,
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201 const void **data_r, size_t *data_size_r)
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202 {
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203 struct mail_index_view_transaction *tview =
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204 (struct mail_index_view_transaction *)view;
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205
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206 /* FIXME: check updates */
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207 return tview->super->get_header_ext(view, map, ext_id,
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208 data_r, data_size_r);
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209 }
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210
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211 static struct mail_index_view_vfuncs trans_view_vfuncs = {
2224
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212 _tview_close,
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213 _tview_get_message_count,
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214 _tview_get_header,
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215 _tview_lookup_full,
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216 _tview_lookup_uid,
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217 _tview_lookup_uid_range,
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218 _tview_lookup_first,
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219 _tview_lookup_ext_full,
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220 _tview_get_header_ext
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221 };
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222
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223 struct mail_index_view *
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224 mail_index_transaction_open_updated_view(struct mail_index_transaction *t)
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225 {
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226 struct mail_index_view_transaction *tview;
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227
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228 if (t->view->syncing) {
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229 /* transaction view is being synced. while it's done, it's not
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230 possible to add new messages, but the view itself might
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231 change. so we can't make a copy of the view. */
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232 mail_index_view_ref(t->view);
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233 return t->view;
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234 }
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235
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236 tview = i_new(struct mail_index_view_transaction, 1);
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237 mail_index_view_clone(&tview->view, t->view);
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238 tview->view.v = trans_view_vfuncs;
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239 tview->super = &t->view->v;
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240 tview->t = t;
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241
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242 mail_index_transaction_ref(t);
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243 return &tview->view;
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244 }