Mercurial > vim
annotate src/json.c @ 7918:ce5a7a613867 v7.4.1255
commit https://github.com/vim/vim/commit/66624ff0d9e1de2fc5eb4f95f3a3a2ed70b10138
Author: Bram Moolenaar <Bram@vim.org>
Date: Wed Feb 3 23:59:43 2016 +0100
patch 7.4.1255
Problem: Crash for channel "eval" command without third argument.
Solution: Check for missing argument.
author | Christian Brabandt <cb@256bit.org> |
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date | Thu, 04 Feb 2016 00:00:05 +0100 |
parents | df2b8af14072 |
children | 2679e636e862 |
rev | line source |
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1 /* vi:set ts=8 sts=4 sw=4: |
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2 * |
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3 * VIM - Vi IMproved by Bram Moolenaar |
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4 * |
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5 * Do ":help uganda" in Vim to read copying and usage conditions. |
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6 * Do ":help credits" in Vim to see a list of people who contributed. |
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7 * See README.txt for an overview of the Vim source code. |
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8 */ |
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9 |
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10 /* |
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11 * json.c: Encoding and decoding JSON. |
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12 * |
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13 * Follows this standard: https://tools.ietf.org/html/rfc7159.html |
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14 */ |
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15 |
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16 #include "vim.h" |
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17 |
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18 #if defined(FEAT_EVAL) || defined(PROTO) |
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19 static int json_encode_item(garray_T *gap, typval_T *val, int copyID); |
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20 static int json_decode_item(js_read_T *reader, typval_T *res); |
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21 |
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22 /* |
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23 * Encode "val" into a JSON format string. |
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24 */ |
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25 char_u * |
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26 json_encode(typval_T *val) |
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27 { |
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28 garray_T ga; |
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29 |
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30 /* Store bytes in the growarray. */ |
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31 ga_init2(&ga, 1, 4000); |
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32 json_encode_item(&ga, val, get_copyID()); |
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33 return ga.ga_data; |
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34 } |
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35 |
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36 /* |
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37 * Encode ["nr", "val"] into a JSON format string. |
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38 * Returns NULL when out of memory. |
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39 */ |
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40 char_u * |
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41 json_encode_nr_expr(int nr, typval_T *val) |
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42 { |
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43 typval_T listtv; |
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44 typval_T nrtv; |
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45 char_u *text; |
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46 |
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47 nrtv.v_type = VAR_NUMBER; |
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48 nrtv.vval.v_number = nr; |
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49 if (rettv_list_alloc(&listtv) == FAIL) |
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50 return NULL; |
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51 if (list_append_tv(listtv.vval.v_list, &nrtv) == FAIL |
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52 || list_append_tv(listtv.vval.v_list, val) == FAIL) |
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53 { |
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54 list_unref(listtv.vval.v_list); |
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55 return NULL; |
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56 } |
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57 |
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58 text = json_encode(&listtv); |
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59 list_unref(listtv.vval.v_list); |
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60 return text; |
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61 } |
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62 |
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63 static void |
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64 write_string(garray_T *gap, char_u *str) |
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65 { |
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66 char_u *res = str; |
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67 char_u numbuf[NUMBUFLEN]; |
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68 |
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69 if (res == NULL) |
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70 ga_concat(gap, (char_u *)"null"); |
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71 else |
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72 { |
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73 ga_append(gap, '"'); |
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74 while (*res != NUL) |
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75 { |
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76 int c = PTR2CHAR(res); |
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77 |
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78 switch (c) |
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79 { |
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80 case 0x08: |
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81 ga_append(gap, '\\'); ga_append(gap, 'b'); break; |
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82 case 0x09: |
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83 ga_append(gap, '\\'); ga_append(gap, 't'); break; |
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84 case 0x0a: |
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85 ga_append(gap, '\\'); ga_append(gap, 'n'); break; |
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86 case 0x0c: |
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87 ga_append(gap, '\\'); ga_append(gap, 'f'); break; |
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88 case 0x0d: |
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89 ga_append(gap, '\\'); ga_append(gap, 'r'); break; |
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90 case 0x22: /* " */ |
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91 case 0x5c: /* \ */ |
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92 ga_append(gap, '\\'); |
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93 ga_append(gap, c); |
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94 break; |
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95 default: |
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96 if (c >= 0x20) |
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97 { |
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98 #ifdef FEAT_MBYTE |
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99 numbuf[mb_char2bytes(c, numbuf)] = NUL; |
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100 #else |
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101 numbuf[0] = c; |
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102 numbuf[1] = NUL; |
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103 #endif |
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104 ga_concat(gap, numbuf); |
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105 } |
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106 else |
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107 { |
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108 vim_snprintf((char *)numbuf, NUMBUFLEN, |
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109 "\\u%04lx", (long)c); |
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110 ga_concat(gap, numbuf); |
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111 } |
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112 } |
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113 mb_cptr_adv(res); |
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114 } |
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115 ga_append(gap, '"'); |
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116 } |
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117 } |
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118 |
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119 /* |
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120 * Encode "val" into "gap". |
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121 * Return FAIL or OK. |
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122 */ |
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123 static int |
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124 json_encode_item(garray_T *gap, typval_T *val, int copyID) |
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125 { |
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126 char_u numbuf[NUMBUFLEN]; |
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127 char_u *res; |
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128 list_T *l; |
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129 dict_T *d; |
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130 |
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131 switch (val->v_type) |
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132 { |
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133 case VAR_SPECIAL: |
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134 switch (val->vval.v_number) |
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135 { |
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136 case VVAL_FALSE: ga_concat(gap, (char_u *)"false"); break; |
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137 case VVAL_TRUE: ga_concat(gap, (char_u *)"true"); break; |
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138 case VVAL_NONE: break; |
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139 case VVAL_NULL: ga_concat(gap, (char_u *)"null"); break; |
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140 } |
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141 break; |
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142 |
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143 case VAR_NUMBER: |
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144 vim_snprintf((char *)numbuf, NUMBUFLEN, "%ld", |
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145 (long)val->vval.v_number); |
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146 ga_concat(gap, numbuf); |
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147 break; |
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148 |
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149 case VAR_STRING: |
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150 res = val->vval.v_string; |
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151 write_string(gap, res); |
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152 break; |
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153 |
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154 case VAR_FUNC: |
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155 /* no JSON equivalent */ |
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156 EMSG(_(e_invarg)); |
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157 return FAIL; |
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158 |
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159 case VAR_LIST: |
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160 l = val->vval.v_list; |
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161 if (l == NULL) |
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162 ga_concat(gap, (char_u *)"null"); |
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163 else |
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164 { |
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165 if (l->lv_copyID == copyID) |
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166 ga_concat(gap, (char_u *)"[]"); |
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167 else |
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168 { |
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169 listitem_T *li; |
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170 |
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171 l->lv_copyID = copyID; |
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172 ga_append(gap, '['); |
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173 for (li = l->lv_first; li != NULL && !got_int; ) |
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174 { |
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175 if (json_encode_item(gap, &li->li_tv, copyID) == FAIL) |
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176 return FAIL; |
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177 li = li->li_next; |
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178 if (li != NULL) |
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179 ga_append(gap, ','); |
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180 } |
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181 ga_append(gap, ']'); |
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182 l->lv_copyID = 0; |
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183 } |
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184 } |
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185 break; |
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186 |
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187 case VAR_DICT: |
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188 d = val->vval.v_dict; |
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189 if (d == NULL) |
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190 ga_concat(gap, (char_u *)"null"); |
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191 else |
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192 { |
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193 if (d->dv_copyID == copyID) |
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194 ga_concat(gap, (char_u *)"{}"); |
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195 else |
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196 { |
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197 int first = TRUE; |
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198 int todo = (int)d->dv_hashtab.ht_used; |
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199 hashitem_T *hi; |
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200 |
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201 d->dv_copyID = copyID; |
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202 ga_append(gap, '{'); |
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203 |
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204 for (hi = d->dv_hashtab.ht_array; todo > 0 && !got_int; |
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205 ++hi) |
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206 if (!HASHITEM_EMPTY(hi)) |
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207 { |
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208 --todo; |
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209 if (first) |
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210 first = FALSE; |
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211 else |
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212 ga_append(gap, ','); |
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213 write_string(gap, hi->hi_key); |
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214 ga_append(gap, ':'); |
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215 if (json_encode_item(gap, &dict_lookup(hi)->di_tv, |
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216 copyID) == FAIL) |
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217 return FAIL; |
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218 } |
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219 ga_append(gap, '}'); |
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220 d->dv_copyID = 0; |
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221 } |
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222 } |
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223 break; |
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224 |
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225 #ifdef FEAT_FLOAT |
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226 case VAR_FLOAT: |
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227 vim_snprintf((char *)numbuf, NUMBUFLEN, "%g", val->vval.v_float); |
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228 ga_concat(gap, numbuf); |
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229 break; |
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230 #endif |
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231 default: EMSG2(_(e_intern2), "json_encode_item()"); break; |
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232 return FAIL; |
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233 } |
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234 return OK; |
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235 } |
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236 |
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237 /* |
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238 * When "reader" has less than NUMBUFLEN bytes available, call the fill |
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239 * callback to get more. |
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240 */ |
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241 static void |
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242 fill_numbuflen(js_read_T *reader) |
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243 { |
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244 if (reader->js_fill != NULL && (int)(reader->js_end - reader->js_buf) |
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245 - reader->js_used < NUMBUFLEN) |
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246 { |
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247 if (reader->js_fill(reader)) |
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248 reader->js_end = reader->js_buf + STRLEN(reader->js_buf); |
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249 } |
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250 } |
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251 |
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252 /* |
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253 * Skip white space in "reader". |
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254 * Also tops up readahead when needed. |
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255 */ |
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256 static void |
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257 json_skip_white(js_read_T *reader) |
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258 { |
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259 int c; |
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260 |
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261 for (;;) |
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262 { |
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263 c = reader->js_buf[reader->js_used]; |
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264 if (reader->js_fill != NULL && c == NUL) |
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265 { |
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266 if (reader->js_fill(reader)) |
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267 reader->js_end = reader->js_buf + STRLEN(reader->js_buf); |
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268 continue; |
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269 } |
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270 if (c != ' ' && c != TAB && c != NL && c != CAR) |
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271 break; |
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272 ++reader->js_used; |
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273 } |
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274 fill_numbuflen(reader); |
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275 } |
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276 |
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277 static int |
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278 json_decode_array(js_read_T *reader, typval_T *res) |
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279 { |
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280 char_u *p; |
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281 typval_T item; |
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282 listitem_T *li; |
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283 int ret; |
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284 |
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285 if (res != NULL && rettv_list_alloc(res) == FAIL) |
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286 { |
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287 res->v_type = VAR_SPECIAL; |
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288 res->vval.v_number = VVAL_NONE; |
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289 return FAIL; |
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290 } |
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291 ++reader->js_used; /* consume the '[' */ |
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292 |
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293 while (TRUE) |
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294 { |
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295 json_skip_white(reader); |
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296 p = reader->js_buf + reader->js_used; |
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297 if (*p == NUL) |
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298 return MAYBE; |
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299 if (*p == ']') |
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300 { |
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301 ++reader->js_used; /* consume the ']' */ |
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302 break; |
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303 } |
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304 |
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305 ret = json_decode_item(reader, res == NULL ? NULL : &item); |
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306 if (ret != OK) |
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307 return ret; |
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308 if (res != NULL) |
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309 { |
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310 li = listitem_alloc(); |
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311 if (li == NULL) |
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312 { |
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313 clear_tv(&item); |
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314 return FAIL; |
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315 } |
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316 li->li_tv = item; |
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317 list_append(res->vval.v_list, li); |
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318 } |
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319 |
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320 json_skip_white(reader); |
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321 p = reader->js_buf + reader->js_used; |
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322 if (*p == ',') |
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323 ++reader->js_used; |
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324 else if (*p != ']') |
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325 { |
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326 if (*p == NUL) |
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327 return MAYBE; |
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328 return FAIL; |
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329 } |
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330 } |
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331 return OK; |
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332 } |
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333 |
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334 static int |
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335 json_decode_object(js_read_T *reader, typval_T *res) |
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336 { |
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337 char_u *p; |
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338 typval_T tvkey; |
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339 typval_T item; |
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340 dictitem_T *di; |
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341 char_u buf[NUMBUFLEN]; |
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342 char_u *key = NULL; |
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343 int ret; |
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344 |
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345 if (res != NULL && rettv_dict_alloc(res) == FAIL) |
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346 { |
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347 res->v_type = VAR_SPECIAL; |
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348 res->vval.v_number = VVAL_NONE; |
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349 return FAIL; |
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350 } |
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351 ++reader->js_used; /* consume the '{' */ |
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352 |
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353 while (TRUE) |
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354 { |
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355 json_skip_white(reader); |
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356 p = reader->js_buf + reader->js_used; |
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357 if (*p == NUL) |
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358 return MAYBE; |
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359 if (*p == '}') |
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360 { |
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361 ++reader->js_used; /* consume the '}' */ |
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362 break; |
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363 } |
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364 |
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365 ret = json_decode_item(reader, res == NULL ? NULL : &tvkey); |
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366 if (ret != OK) |
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367 return ret; |
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368 if (res != NULL) |
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369 { |
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370 key = get_tv_string_buf_chk(&tvkey, buf); |
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371 if (key == NULL || *key == NUL) |
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372 { |
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373 clear_tv(&tvkey); |
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374 return FAIL; |
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375 } |
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376 } |
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377 |
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378 json_skip_white(reader); |
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379 p = reader->js_buf + reader->js_used; |
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380 if (*p != ':') |
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381 { |
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382 if (res != NULL) |
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383 clear_tv(&tvkey); |
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384 if (*p == NUL) |
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385 return MAYBE; |
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386 return FAIL; |
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387 } |
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388 ++reader->js_used; |
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389 json_skip_white(reader); |
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390 |
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391 ret = json_decode_item(reader, res == NULL ? NULL : &item); |
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392 if (ret != OK) |
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393 { |
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394 if (res != NULL) |
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395 clear_tv(&tvkey); |
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396 return ret; |
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397 } |
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398 |
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399 if (res != NULL) |
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400 { |
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401 di = dictitem_alloc(key); |
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402 clear_tv(&tvkey); |
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403 if (di == NULL) |
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404 { |
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405 clear_tv(&item); |
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406 return FAIL; |
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407 } |
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408 di->di_tv = item; |
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409 if (dict_add(res->vval.v_dict, di) == FAIL) |
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410 { |
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411 dictitem_free(di); |
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412 return FAIL; |
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413 } |
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414 } |
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415 |
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416 json_skip_white(reader); |
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417 p = reader->js_buf + reader->js_used; |
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418 if (*p == ',') |
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419 ++reader->js_used; |
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420 else if (*p != '}') |
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421 { |
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422 if (*p == NUL) |
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423 return MAYBE; |
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424 return FAIL; |
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425 } |
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426 } |
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427 return OK; |
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428 } |
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429 |
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430 static int |
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431 json_decode_string(js_read_T *reader, typval_T *res) |
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432 { |
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433 garray_T ga; |
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434 int len; |
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435 char_u *p; |
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436 int c; |
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437 long nr; |
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438 char_u buf[NUMBUFLEN]; |
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439 |
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440 if (res != NULL) |
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441 ga_init2(&ga, 1, 200); |
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442 |
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443 p = reader->js_buf + reader->js_used + 1; /* skip over " */ |
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444 while (*p != '"') |
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445 { |
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446 if (*p == NUL || p[1] == NUL |
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447 #ifdef FEAT_MBYTE |
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448 || utf_ptr2len(p) < utf_byte2len(*p) |
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449 #endif |
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450 ) |
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451 { |
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452 if (reader->js_fill == NULL) |
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453 break; |
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454 len = (int)(reader->js_end - p); |
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455 reader->js_used = (int)(p - reader->js_buf); |
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456 if (!reader->js_fill(reader)) |
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457 break; /* didn't get more */ |
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458 p = reader->js_buf + reader->js_used; |
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459 reader->js_end = reader->js_buf + STRLEN(reader->js_buf); |
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460 continue; |
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461 } |
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462 |
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463 if (*p == '\\') |
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464 { |
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465 c = -1; |
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466 switch (p[1]) |
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467 { |
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468 case '\\': c = '\\'; break; |
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469 case '"': c = '"'; break; |
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470 case 'b': c = BS; break; |
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471 case 't': c = TAB; break; |
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472 case 'n': c = NL; break; |
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473 case 'f': c = FF; break; |
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474 case 'r': c = CAR; break; |
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475 case 'u': |
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476 if (reader->js_fill != NULL |
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477 && (int)(reader->js_end - p) < NUMBUFLEN) |
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478 { |
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479 reader->js_used = (int)(p - reader->js_buf); |
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480 if (reader->js_fill(reader)) |
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481 { |
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482 p = reader->js_buf + reader->js_used; |
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483 reader->js_end = reader->js_buf |
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484 + STRLEN(reader->js_buf); |
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485 } |
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486 } |
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487 vim_str2nr(p + 2, NULL, &len, |
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488 STR2NR_HEX + STR2NR_FORCE, &nr, NULL, 4); |
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489 p += len + 2; |
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490 if (res != NULL) |
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491 { |
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492 #ifdef FEAT_MBYTE |
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493 buf[(*mb_char2bytes)((int)nr, buf)] = NUL; |
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494 ga_concat(&ga, buf); |
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495 #else |
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496 ga_append(&ga, nr); |
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497 #endif |
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498 } |
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499 break; |
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500 default: |
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501 /* not a special char, skip over \ */ |
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502 ++p; |
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503 continue; |
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504 } |
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505 if (c > 0) |
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506 { |
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507 p += 2; |
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508 if (res != NULL) |
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509 ga_append(&ga, c); |
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510 } |
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511 } |
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512 else |
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513 { |
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514 len = MB_PTR2LEN(p); |
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515 if (res != NULL) |
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516 { |
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517 if (ga_grow(&ga, len) == FAIL) |
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518 { |
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519 ga_clear(&ga); |
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520 return FAIL; |
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521 } |
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522 mch_memmove((char *)ga.ga_data + ga.ga_len, p, (size_t)len); |
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523 ga.ga_len += len; |
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524 } |
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525 p += len; |
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526 } |
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527 } |
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528 |
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529 reader->js_used = (int)(p - reader->js_buf); |
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530 if (*p == '"') |
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531 { |
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532 ++reader->js_used; |
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533 if (res != NULL) |
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534 { |
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535 res->v_type = VAR_STRING; |
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536 if (ga.ga_data == NULL) |
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537 res->vval.v_string = NULL; |
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538 else |
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539 res->vval.v_string = vim_strsave(ga.ga_data); |
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540 } |
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541 return OK; |
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542 } |
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543 if (res != NULL) |
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544 { |
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545 res->v_type = VAR_SPECIAL; |
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546 res->vval.v_number = VVAL_NONE; |
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547 ga_clear(&ga); |
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548 } |
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549 return MAYBE; |
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550 } |
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551 |
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552 /* |
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553 * Decode one item and put it in "res". If "res" is NULL only advance. |
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554 * Must already have skipped white space. |
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555 * |
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556 * Return FAIL for a decoding error. |
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557 * Return MAYBE for an incomplete message. |
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558 */ |
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559 static int |
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560 json_decode_item(js_read_T *reader, typval_T *res) |
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561 { |
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562 char_u *p; |
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563 int len; |
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564 |
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565 fill_numbuflen(reader); |
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566 p = reader->js_buf + reader->js_used; |
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567 switch (*p) |
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568 { |
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569 case '[': /* array */ |
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570 return json_decode_array(reader, res); |
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571 |
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572 case '{': /* object */ |
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573 return json_decode_object(reader, res); |
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574 |
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575 case '"': /* string */ |
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576 return json_decode_string(reader, res); |
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577 |
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578 case ',': /* comma: empty item */ |
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579 case NUL: /* empty */ |
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580 if (res != NULL) |
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581 { |
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582 res->v_type = VAR_SPECIAL; |
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583 res->vval.v_number = VVAL_NONE; |
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584 } |
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585 return OK; |
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586 |
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587 default: |
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588 if (VIM_ISDIGIT(*p) || *p == '-') |
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589 { |
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590 char_u *sp = p; |
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591 |
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592 #ifdef FEAT_FLOAT |
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593 if (*sp == '-') |
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594 { |
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595 ++sp; |
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596 if (*sp == NUL) |
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597 return MAYBE; |
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598 if (!VIM_ISDIGIT(*sp)) |
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599 return FAIL; |
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600 } |
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601 sp = skipdigits(sp); |
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602 if (*sp == '.' || *sp == 'e' || *sp == 'E') |
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603 { |
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604 if (res == NULL) |
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605 { |
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606 float_T f; |
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607 |
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608 len = string2float(p, &f); |
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609 } |
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610 else |
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611 { |
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612 res->v_type = VAR_FLOAT; |
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613 len = string2float(p, &res->vval.v_float); |
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614 } |
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615 } |
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616 else |
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617 #endif |
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618 { |
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619 long nr; |
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620 |
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621 vim_str2nr(reader->js_buf + reader->js_used, |
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622 NULL, &len, 0, /* what */ |
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623 &nr, NULL, 0); |
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624 if (res != NULL) |
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625 { |
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626 res->v_type = VAR_NUMBER; |
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627 res->vval.v_number = nr; |
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628 } |
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629 } |
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630 reader->js_used += len; |
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631 return OK; |
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632 } |
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633 if (STRNICMP((char *)p, "false", 5) == 0) |
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634 { |
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635 reader->js_used += 5; |
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commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
636 if (res != NULL) |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
637 { |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
638 res->v_type = VAR_SPECIAL; |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
639 res->vval.v_number = VVAL_FALSE; |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
640 } |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
641 return OK; |
7712
bce3b5ddb393
commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
diff
changeset
|
642 } |
bce3b5ddb393
commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
diff
changeset
|
643 if (STRNICMP((char *)p, "true", 4) == 0) |
bce3b5ddb393
commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
diff
changeset
|
644 { |
bce3b5ddb393
commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
diff
changeset
|
645 reader->js_used += 4; |
7883
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
646 if (res != NULL) |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
647 { |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
648 res->v_type = VAR_SPECIAL; |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
649 res->vval.v_number = VVAL_TRUE; |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
650 } |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
651 return OK; |
7712
bce3b5ddb393
commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
diff
changeset
|
652 } |
bce3b5ddb393
commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
diff
changeset
|
653 if (STRNICMP((char *)p, "null", 4) == 0) |
bce3b5ddb393
commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
diff
changeset
|
654 { |
bce3b5ddb393
commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
diff
changeset
|
655 reader->js_used += 4; |
7883
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
656 if (res != NULL) |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
657 { |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
658 res->v_type = VAR_SPECIAL; |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
659 res->vval.v_number = VVAL_NULL; |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
660 } |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
661 return OK; |
7712
bce3b5ddb393
commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
diff
changeset
|
662 } |
7883
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
663 /* check for truncated name */ |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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changeset
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664 len = (int)(reader->js_end - (reader->js_buf + reader->js_used)); |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
665 if ((len < 5 && STRNICMP((char *)p, "false", len) == 0) |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
666 || (len < 4 && (STRNICMP((char *)p, "true", len) == 0 |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
667 || STRNICMP((char *)p, "null", len) == 0))) |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
668 return MAYBE; |
7712
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commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
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changeset
|
669 break; |
bce3b5ddb393
commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
diff
changeset
|
670 } |
bce3b5ddb393
commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
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changeset
|
671 |
7883
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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changeset
|
672 if (res != NUL) |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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changeset
|
673 { |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
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changeset
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674 res->v_type = VAR_SPECIAL; |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
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changeset
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675 res->vval.v_number = VVAL_NONE; |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
676 } |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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changeset
|
677 return FAIL; |
7712
bce3b5ddb393
commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
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changeset
|
678 } |
bce3b5ddb393
commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
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changeset
|
679 |
bce3b5ddb393
commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
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changeset
|
680 /* |
bce3b5ddb393
commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
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changeset
|
681 * Decode the JSON from "reader" and store the result in "res". |
7883
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
682 * Return FAIL if not the whole message was consumed. |
7712
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commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
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changeset
|
683 */ |
7868
17e6ff1a74f1
commit https://github.com/vim/vim/commit/19d2f1589850d7db1ce77efec052929246f156e2
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
684 int |
7883
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
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parents:
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changeset
|
685 json_decode_all(js_read_T *reader, typval_T *res) |
7712
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commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
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changeset
|
686 { |
7883
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
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changeset
|
687 int ret; |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
688 |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
689 /* We get the end once, to avoid calling strlen() many times. */ |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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changeset
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690 reader->js_end = reader->js_buf + STRLEN(reader->js_buf); |
7712
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commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
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changeset
|
691 json_skip_white(reader); |
7883
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
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|
692 ret = json_decode_item(reader, res); |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
693 if (ret != OK) |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
694 return FAIL; |
7712
bce3b5ddb393
commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
diff
changeset
|
695 json_skip_white(reader); |
bce3b5ddb393
commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
diff
changeset
|
696 if (reader->js_buf[reader->js_used] != NUL) |
7868
17e6ff1a74f1
commit https://github.com/vim/vim/commit/19d2f1589850d7db1ce77efec052929246f156e2
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
697 return FAIL; |
17e6ff1a74f1
commit https://github.com/vim/vim/commit/19d2f1589850d7db1ce77efec052929246f156e2
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
698 return OK; |
7712
bce3b5ddb393
commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34
Christian Brabandt <cb@256bit.org>
parents:
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changeset
|
699 } |
7883
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
700 |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
701 /* |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
702 * Decode the JSON from "reader" and store the result in "res". |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
703 * Return FAIL if the message has a decoding error or the message is |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
704 * truncated. Consumes the message anyway. |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
705 */ |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
706 int |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
707 json_decode(js_read_T *reader, typval_T *res) |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
708 { |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
709 int ret; |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
710 |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
711 /* We get the end once, to avoid calling strlen() many times. */ |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
712 reader->js_end = reader->js_buf + STRLEN(reader->js_buf); |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
713 json_skip_white(reader); |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
714 ret = json_decode_item(reader, res); |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
715 json_skip_white(reader); |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
716 |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
717 return ret == OK ? OK : FAIL; |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
718 } |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
719 |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
720 /* |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
721 * Decode the JSON from "reader" to find the end of the message. |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
722 * Return FAIL if the message has a decoding error. |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
723 * Return MAYBE if the message is truncated, need to read more. |
98a96e0ca73b
commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e
Christian Brabandt <cb@256bit.org>
parents:
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724 * This only works reliable if the message contains an object, array or |
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725 * string. A number might be trucated without knowing. |
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726 * Does not advance the reader. |
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727 */ |
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728 int |
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729 json_find_end(js_read_T *reader) |
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730 { |
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731 int used_save = reader->js_used; |
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732 int ret; |
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733 |
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734 /* We get the end once, to avoid calling strlen() many times. */ |
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735 reader->js_end = reader->js_buf + STRLEN(reader->js_buf); |
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736 json_skip_white(reader); |
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737 ret = json_decode_item(reader, NULL); |
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738 reader->js_used = used_save; |
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739 return ret; |
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740 } |
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741 #endif |