Mercurial > dovecot > core-2.2

annotate src/lib-storage/index/index-sort.c @ 792:d573c53946ac HEAD

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Full not-too-well-tested support for SORT extension. Required a few library interface changes.
author Timo Sirainen <tss@iki.fi>
date Tue, 17 Dec 2002 06:28:40 +0200
parents f57c52738f90
children 35abd7a5d381
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /* Copyright (C) 2002 Timo Sirainen */
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2
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3 #include "lib.h"
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4 #include "ostream.h"
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5 #include "rfc822-date.h"
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6 #include "imap-envelope.h"
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7 #include "imap-message-cache.h"
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8 #include "mail-index.h"
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9 #include "index-storage.h"
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10 #include "index-sort.h"
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11
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12 static ImapMessageCache *search_open_cache(IndexSortContext *ctx,
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13 unsigned int uid)
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14 {
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15 if (ctx->last_uid != uid) {
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16 ctx->cached = FALSE;
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17 ctx->last_uid = uid;
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18 ctx->rec = ctx->ibox->index->lookup_uid_range(ctx->ibox->index,
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19 uid, uid, NULL);
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20 if (ctx->rec == NULL) {
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21 ctx->last_uid = 0;
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22 return NULL;
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23 }
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24 }
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25
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26 if (!ctx->cached) {
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27 ctx->cached = TRUE;
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28 (void)index_msgcache_open(ctx->ibox->cache,
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29 ctx->ibox->index, ctx->rec,
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30 IMAP_CACHE_ENVELOPE);
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31 }
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32
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33 return ctx->ibox->cache;
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34 }
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35
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36 static uoff_t _input_uofft(MailSortType type, unsigned int id, void *context)
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37 {
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38 IndexSortContext *ctx = context;
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39 ImapMessageCache *cache;
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40
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41 if (type != MAIL_SORT_SIZE) {
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42 i_unreached();
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43 return 0;
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44 }
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45
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46 cache = search_open_cache(ctx, id);
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47 return cache == NULL ? 0 : imap_msgcache_get_virtual_size(cache);
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48 }
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49
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50 static const char *_input_mailbox(MailSortType type, unsigned int id,
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51 void *context)
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52 {
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53 IndexSortContext *ctx = context;
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54 ImapEnvelopeField env_field;
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55 const char *envelope;
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56
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57 switch (type) {
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58 case MAIL_SORT_CC:
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59 env_field = IMAP_ENVELOPE_CC;
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60 break;
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61 case MAIL_SORT_FROM:
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62 env_field = IMAP_ENVELOPE_FROM;
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63 break;
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64 case MAIL_SORT_TO:
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65 env_field = IMAP_ENVELOPE_TO;
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66 break;
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67 default:
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68 i_unreached();
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69 return NULL;
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70 }
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71
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72 /* get field from hopefully cached envelope */
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73 envelope = imap_msgcache_get(search_open_cache(ctx, id),
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74 IMAP_CACHE_ENVELOPE);
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75 return envelope == NULL ? NULL :
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76 imap_envelope_parse(envelope, env_field,
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77 IMAP_ENVELOPE_RESULT_FIRST_MAILBOX);
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78 }
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79
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80 static const char *_input_str(MailSortType type, unsigned int id, void *context)
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81 {
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82 IndexSortContext *ctx = context;
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83 ImapEnvelopeField env_field;
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84 const char *envelope;
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85
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86 switch (type) {
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87 case MAIL_SORT_DATE:
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88 env_field = IMAP_ENVELOPE_DATE;
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89 break;
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90 case MAIL_SORT_SUBJECT:
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91 env_field = IMAP_ENVELOPE_SUBJECT;
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92 break;
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93 default:
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94 i_unreached();
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95 return NULL;
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96 }
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97
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98 /* get field from hopefully cached envelope */
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99 envelope = imap_msgcache_get(search_open_cache(ctx, id),
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100 IMAP_CACHE_ENVELOPE);
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101 return envelope == NULL ? NULL :
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102 imap_envelope_parse(envelope, env_field,
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103 IMAP_ENVELOPE_RESULT_STRING);
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104 }
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105
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106 static time_t _input_time(MailSortType type, unsigned int id, void *context)
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107 {
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108 IndexSortContext *ctx = context;
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109 ImapMessageCache *cache;
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110 const char *str;
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111 time_t time;
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112 int timezone_offset;
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113
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114 switch (type) {
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115 case MAIL_SORT_ARRIVAL:
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116 cache = search_open_cache(ctx, id);
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117 return cache == NULL ? 0 :
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118 imap_msgcache_get_internal_date(cache);
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119 case MAIL_SORT_DATE:
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120 str = _input_str(type, id, context);
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121 if (str == NULL)
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122 return 0;
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123
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124 if (!rfc822_parse_date(str, &time, &timezone_offset))
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125 return 0;
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126
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127 return time - timezone_offset*60;
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128 default:
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129 i_unreached();
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130 return 0;
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131 }
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132 }
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133
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134 static void _input_reset(void *context)
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135 {
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136 IndexSortContext *ctx = context;
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137
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138 ctx->cached = FALSE;
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139 }
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140
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141 static void _output(unsigned int *data, size_t count, void *context)
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142 {
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143 IndexSortContext *ctx = context;
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144 char num[MAX_INT_STRLEN+1];
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145 size_t i, len;
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146
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147 for (i = 0; i < count; i++) {
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148 len = i_snprintf(num, sizeof(num), " %u", data[i]);
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149 o_stream_send(ctx->output, num, len);
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150 }
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151 }
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152
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153 MailSortFuncs index_sort_funcs = {
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154 _input_time,
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155 _input_uofft,
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156 _input_mailbox,
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157 _input_str,
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158 _input_reset,
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159 _output
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160 };