Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/lib-storage/mail-search.h @ 7908:1e69c84a1e5a HEAD

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Search code cleanups and minor optimizations.
author Timo Sirainen <tss@iki.fi>
date Fri, 20 Jun 2008 05:35:05 +0300
parents ec49260ed4ee
children bf9c51edbc66
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rev   line source
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1 #ifndef MAIL_SEARCH_H
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2 #define MAIL_SEARCH_H
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3
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4 #include "seq-range-array.h"
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5 #include "mail-types.h"
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6
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7 enum mail_search_arg_type {
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8 SEARCH_OR,
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9 SEARCH_SUB,
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10
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11 /* sequence sets */
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12 SEARCH_ALL,
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13 SEARCH_SEQSET,
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14 SEARCH_UIDSET,
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15
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16 /* flags */
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17 SEARCH_FLAGS,
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18 SEARCH_KEYWORDS,
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19
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20 /* dates */
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21 SEARCH_BEFORE,
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22 SEARCH_ON, /* time must point to beginning of the day */
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23 SEARCH_SINCE,
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24 SEARCH_SENTBEFORE,
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25 SEARCH_SENTON, /* time must point to beginning of the day */
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26 SEARCH_SENTSINCE,
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27
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28 /* sizes */
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29 SEARCH_SMALLER,
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30 SEARCH_LARGER,
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31
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32 /* headers */
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33 SEARCH_HEADER,
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34 SEARCH_HEADER_ADDRESS,
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35 SEARCH_HEADER_COMPRESS_LWSP,
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36
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37 /* body */
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38 SEARCH_BODY,
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39 SEARCH_TEXT,
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40 SEARCH_BODY_FAST,
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41 SEARCH_TEXT_FAST,
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42
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43 /* extensions */
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44 SEARCH_MODSEQ
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45 };
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46
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47 enum mail_search_arg_flag {
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48 /* For (SENT)BEFORE/SINCE/ON searches: Don't drop timezone from
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49 comparisons */
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50 MAIL_SEARCH_ARG_FLAG_USE_TZ = 0x01,
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51 };
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52
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53 enum mail_search_modseq_type {
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54 MAIL_SEARCH_MODSEQ_TYPE_ANY = 0,
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55 MAIL_SEARCH_MODSEQ_TYPE_PRIVATE,
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56 MAIL_SEARCH_MODSEQ_TYPE_SHARED
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57 };
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58
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59 struct mail_search_modseq {
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60 uint64_t modseq;
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61 enum mail_search_modseq_type type;
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62 };
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63
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64 struct mail_search_arg {
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65 struct mail_search_arg *next;
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66
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67 enum mail_search_arg_type type;
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68 struct {
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69 struct mail_search_arg *subargs;
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70 ARRAY_TYPE(seq_range) seqset;
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71 const char *str;
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72 time_t time;
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73 uoff_t size;
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74 enum mail_flags flags;
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75 struct mail_keywords *keywords;
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76 struct mail_search_modseq *modseq;
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77 enum mail_search_arg_flag search_flags;
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78 } value;
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79
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80 void *context;
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81 const char *hdr_field_name; /* for SEARCH_HEADER* */
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82 unsigned int not:1;
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83 unsigned int match_always:1; /* result = 1 always */
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84
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85 int result; /* -1 = unknown, 0 = unmatched, 1 = matched */
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86 };
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87
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88 struct mail_search_args {
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89 int refcount;
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90 pool_t pool;
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91 struct mailbox *box;
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92 struct mail_search_arg *args;
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93 const char *charset;
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94
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95 unsigned int initialized:1;
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96 unsigned int simplified:1;
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97 unsigned int have_inthreads:1;
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98 };
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99
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100 #define ARG_SET_RESULT(arg, res) \
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101 STMT_START { \
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102 (arg)->result = !(arg)->not ? (res) : \
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103 (res) == -1 ? -1 : !(res); \
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104 } STMT_END
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105
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106 typedef void mail_search_foreach_callback_t(struct mail_search_arg *arg,
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107 void *context);
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108
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109 /* Allocate keywords for search arguments. If change_uidsets is TRUE,
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110 change uidsets to seqsets. */
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111 void mail_search_args_init(struct mail_search_args *args,
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112 struct mailbox *box, bool change_uidsets,
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113 const ARRAY_TYPE(seq_range) *search_saved_uidset);
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114 /* Free keywords. The args can initialized afterwards again if needed. */
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115 void mail_search_args_deinit(struct mail_search_args *args);
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116 /* Convert sequence sets in args to UIDs. */
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117 void mail_search_args_seq2uid(struct mail_search_args *args);
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118
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119 void mail_search_args_ref(struct mail_search_args *args);
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120 void mail_search_args_unref(struct mail_search_args **args);
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121
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122 /* Reset the results in search arguments. match_always is reset only if
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123 full_reset is TRUE. */
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124 void mail_search_args_reset(struct mail_search_arg *args, bool full_reset);
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125
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126 /* goes through arguments in list that don't have a result yet.
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127 Returns 1 = search matched, 0 = search unmatched, -1 = don't know yet */
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128 int mail_search_args_foreach(struct mail_search_arg *args,
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129 mail_search_foreach_callback_t *callback,
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130 void *context);
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131 #ifdef CONTEXT_TYPE_SAFETY
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132 # define mail_search_args_foreach(args, callback, context) \
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133 ({(void)(1 ? 0 : callback((struct mail_search_arg *)NULL, context)); \
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134 mail_search_args_foreach(args, \
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135 (mail_search_foreach_callback_t *)callback, context); })
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136 #else
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137 # define mail_search_args_foreach(args, callback, context) \
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138 mail_search_args_foreach(args, \
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139 (mail_search_foreach_callback_t *)callback, context)
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140 #endif
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141
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142 /* Fills have_headers and have_body based on if such search argument exists
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143 that needs to be checked. Returns the headers that we're searching for, or
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144 NULL if we're searching for TEXT. */
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145 const char *const *
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146 mail_search_args_analyze(struct mail_search_arg *args,
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147 bool *have_headers, bool *have_body);
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148
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149 /* Simplify/optimize search arguments */
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150 void mail_search_args_simplify(struct mail_search_args *args);
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151
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152 #endif