1 | /* |
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2 | * Copyright 1996, University Corporation for Atmospheric Research |
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3 | * See netcdf/COPYRIGHT file for copying and redistribution conditions. |
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4 | */ |
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5 | /* $Id: var.c,v 1.144 2010/05/30 00:50:35 russ Exp $ */ |
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6 | |
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7 | #include "nc.h" |
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8 | #include <stdlib.h> |
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9 | #include <string.h> |
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10 | #include <assert.h> |
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11 | #include <limits.h> |
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12 | #include "ncx.h" |
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13 | #include "rnd.h" |
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14 | #include "utf8proc.h" |
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15 | |
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16 | #ifndef OFF_T_MAX |
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17 | #define OFF_T_MAX (~ (off_t) 0 - (~ (off_t) 0 << (CHAR_BIT * sizeof (off_t) - 1))) |
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18 | #endif |
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19 | |
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20 | /* |
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21 | * Free var |
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22 | * Formerly |
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23 | NC_free_var(var) |
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24 | */ |
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25 | void |
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26 | free_NC_var(NC_var *varp) |
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27 | { |
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28 | if(varp == NULL) |
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29 | return; |
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30 | free_NC_attrarrayV(&varp->attrs); |
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31 | free_NC_string(varp->name); |
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32 | #ifndef MALLOCHACK |
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33 | if(varp->dimids != NULL) free(varp->dimids); |
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34 | if(varp->shape != NULL) free(varp->shape); |
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35 | if(varp->dsizes != NULL) free(varp->dsizes); |
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36 | #endif /*!MALLOCHACK*/ |
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37 | free(varp); |
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38 | } |
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39 | |
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40 | |
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41 | /* |
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42 | * Common code for new_NC_var() |
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43 | * and ncx_get_NC_var() |
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44 | */ |
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45 | NC_var * |
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46 | new_x_NC_var( |
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47 | NC_string *strp, |
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48 | size_t ndims) |
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49 | { |
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50 | NC_var *varp; |
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51 | const size_t o1 = M_RNDUP(ndims * sizeof(int)); |
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52 | const size_t o2 = M_RNDUP(ndims * sizeof(size_t)); |
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53 | |
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54 | #ifdef MALLOCHACK |
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55 | const size_t sz = M_RNDUP(sizeof(NC_var)) + |
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56 | o1 + o2 + ndims * sizeof(off_t); |
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57 | #else /*!MALLOCHACK*/ |
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58 | const size_t o3 = ndims * sizeof(off_t); |
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59 | const size_t sz = sizeof(NC_var); |
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60 | #endif /*!MALLOCHACK*/ |
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61 | |
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62 | varp = (NC_var *) malloc(sz); |
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63 | if(varp == NULL ) |
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64 | return NULL; |
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65 | (void) memset(varp, 0, sz); |
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66 | varp->name = strp; |
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67 | varp->ndims = ndims; |
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68 | varp->hash = hash_fast(strp->cp, strlen(strp->cp)); |
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69 | |
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70 | if(ndims != 0) |
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71 | { |
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72 | #ifdef MALLOCHACK |
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73 | /* |
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74 | * NOTE: lint may complain about the next 3 lines: |
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75 | * "pointer cast may result in improper alignment". |
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76 | * We use the M_RNDUP() macro to get the proper alignment. |
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77 | */ |
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78 | varp->dimids = (int *)((char *)varp + M_RNDUP(sizeof(NC_var))); |
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79 | varp->shape = (size_t *)((char *)varp->dimids + o1); |
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80 | varp->dsizes = (off_t *)((char *)varp->shape + o2); |
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81 | #else /*!MALLOCHACK*/ |
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82 | varp->dimids = (int*)malloc(o1); |
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83 | varp->shape = (size_t*)malloc(o2); |
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84 | varp->dsizes = (off_t*)malloc(o3); |
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85 | #endif /*!MALLOCHACK*/ |
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86 | } |
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87 | |
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88 | varp->xsz = 0; |
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89 | varp->len = 0; |
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90 | varp->begin = 0; |
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91 | |
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92 | return varp; |
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93 | } |
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94 | |
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95 | |
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96 | /* |
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97 | * Formerly |
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98 | NC_new_var() |
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99 | */ |
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100 | static NC_var * |
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101 | new_NC_var(const char *uname, nc_type type, |
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102 | size_t ndims, const int *dimids) |
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103 | { |
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104 | NC_string *strp; |
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105 | NC_var *varp; |
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106 | |
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107 | char *name = (char *)utf8proc_NFC((const unsigned char *)uname); |
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108 | if(name == NULL) |
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109 | return NULL; |
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110 | strp = new_NC_string(strlen(name), name); |
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111 | free(name); |
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112 | if(strp == NULL) |
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113 | return NULL; |
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114 | |
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115 | varp = new_x_NC_var(strp, ndims); |
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116 | if(varp == NULL ) |
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117 | { |
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118 | free_NC_string(strp); |
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119 | return NULL; |
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120 | } |
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121 | |
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122 | varp->type = type; |
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123 | |
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124 | if( ndims != 0 && dimids != NULL) |
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125 | (void) memcpy(varp->dimids, dimids, ndims * sizeof(int)); |
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126 | |
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127 | return(varp); |
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128 | } |
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129 | |
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130 | |
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131 | static NC_var * |
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132 | dup_NC_var(const NC_var *rvarp) |
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133 | { |
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134 | NC_var *varp = new_NC_var(rvarp->name->cp, rvarp->type, |
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135 | rvarp->ndims, rvarp->dimids); |
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136 | if(varp == NULL) |
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137 | return NULL; |
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138 | |
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139 | |
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140 | if(dup_NC_attrarrayV(&varp->attrs, &rvarp->attrs) != NC_NOERR) |
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141 | { |
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142 | free_NC_var(varp); |
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143 | return NULL; |
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144 | } |
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145 | |
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146 | (void) memcpy(varp->shape, rvarp->shape, |
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147 | rvarp->ndims * sizeof(size_t)); |
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148 | (void) memcpy(varp->dsizes, rvarp->dsizes, |
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149 | rvarp->ndims * sizeof(size_t)); |
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150 | varp->xsz = rvarp->xsz; |
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151 | varp->len = rvarp->len; |
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152 | varp->begin = rvarp->begin; |
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153 | |
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154 | return varp; |
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155 | } |
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156 | |
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157 | |
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158 | /* vararray */ |
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159 | |
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160 | |
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161 | /* |
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162 | * Free the stuff "in" (referred to by) an NC_vararray. |
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163 | * Leaves the array itself allocated. |
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164 | */ |
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165 | void |
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166 | free_NC_vararrayV0(NC_vararray *ncap) |
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167 | { |
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168 | assert(ncap != NULL); |
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169 | |
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170 | if(ncap->nelems == 0) |
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171 | return; |
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172 | |
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173 | assert(ncap->value != NULL); |
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174 | |
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175 | { |
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176 | NC_var **vpp = ncap->value; |
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177 | NC_var *const *const end = &vpp[ncap->nelems]; |
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178 | for( /*NADA*/; vpp < end; vpp++) |
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179 | { |
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180 | free_NC_var(*vpp); |
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181 | *vpp = NULL; |
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182 | } |
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183 | } |
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184 | ncap->nelems = 0; |
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185 | } |
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186 | |
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187 | |
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188 | /* |
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189 | * Free NC_vararray values. |
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190 | * formerly |
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191 | NC_free_array() |
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192 | */ |
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193 | void |
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194 | free_NC_vararrayV(NC_vararray *ncap) |
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195 | { |
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196 | assert(ncap != NULL); |
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197 | |
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198 | if(ncap->nalloc == 0) |
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199 | return; |
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200 | |
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201 | assert(ncap->value != NULL); |
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202 | |
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203 | free_NC_vararrayV0(ncap); |
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204 | |
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205 | free(ncap->value); |
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206 | ncap->value = NULL; |
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207 | ncap->nalloc = 0; |
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208 | } |
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209 | |
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210 | |
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211 | int |
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212 | dup_NC_vararrayV(NC_vararray *ncap, const NC_vararray *ref) |
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213 | { |
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214 | int status = NC_NOERR; |
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215 | |
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216 | assert(ref != NULL); |
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217 | assert(ncap != NULL); |
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218 | |
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219 | if(ref->nelems != 0) |
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220 | { |
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221 | const size_t sz = ref->nelems * sizeof(NC_var *); |
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222 | ncap->value = (NC_var **) malloc(sz); |
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223 | if(ncap->value == NULL) |
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224 | return NC_ENOMEM; |
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225 | (void) memset(ncap->value, 0, sz); |
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226 | ncap->nalloc = ref->nelems; |
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227 | } |
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228 | |
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229 | ncap->nelems = 0; |
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230 | { |
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231 | NC_var **vpp = ncap->value; |
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232 | const NC_var **drpp = (const NC_var **)ref->value; |
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233 | NC_var *const *const end = &vpp[ref->nelems]; |
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234 | for( /*NADA*/; vpp < end; drpp++, vpp++, ncap->nelems++) |
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235 | { |
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236 | *vpp = dup_NC_var(*drpp); |
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237 | if(*vpp == NULL) |
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238 | { |
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239 | status = NC_ENOMEM; |
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240 | break; |
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241 | } |
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242 | } |
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243 | } |
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244 | |
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245 | if(status != NC_NOERR) |
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246 | { |
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247 | free_NC_vararrayV(ncap); |
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248 | return status; |
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249 | } |
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250 | |
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251 | assert(ncap->nelems == ref->nelems); |
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252 | |
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253 | return NC_NOERR; |
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254 | } |
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255 | |
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256 | |
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257 | /* |
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258 | * Add a new handle on the end of an array of handles |
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259 | * Formerly |
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260 | NC_incr_array(array, tail) |
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261 | */ |
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262 | static int |
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263 | incr_NC_vararray(NC_vararray *ncap, NC_var *newelemp) |
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264 | { |
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265 | NC_var **vp; |
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266 | |
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267 | assert(ncap != NULL); |
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268 | |
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269 | if(ncap->nalloc == 0) |
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270 | { |
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271 | assert(ncap->nelems == 0); |
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272 | vp = (NC_var **) malloc(NC_ARRAY_GROWBY * sizeof(NC_var *)); |
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273 | if(vp == NULL) |
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274 | return NC_ENOMEM; |
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275 | ncap->value = vp; |
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276 | ncap->nalloc = NC_ARRAY_GROWBY; |
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277 | } |
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278 | else if(ncap->nelems +1 > ncap->nalloc) |
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279 | { |
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280 | vp = (NC_var **) realloc(ncap->value, |
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281 | (ncap->nalloc + NC_ARRAY_GROWBY) * sizeof(NC_var *)); |
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282 | if(vp == NULL) |
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283 | return NC_ENOMEM; |
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284 | ncap->value = vp; |
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285 | ncap->nalloc += NC_ARRAY_GROWBY; |
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286 | } |
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287 | |
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288 | if(newelemp != NULL) |
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289 | { |
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290 | ncap->value[ncap->nelems] = newelemp; |
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291 | ncap->nelems++; |
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292 | } |
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293 | return NC_NOERR; |
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294 | } |
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295 | |
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296 | |
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297 | static NC_var * |
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298 | elem_NC_vararray(const NC_vararray *ncap, size_t elem) |
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299 | { |
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300 | assert(ncap != NULL); |
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301 | /* cast needed for braindead systems with signed size_t */ |
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302 | if(ncap->nelems == 0 || (unsigned long)elem >= ncap->nelems) |
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303 | return NULL; |
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304 | |
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305 | assert(ncap->value != NULL); |
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306 | |
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307 | return ncap->value[elem]; |
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308 | } |
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309 | |
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310 | |
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311 | /* End vararray per se */ |
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312 | |
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313 | |
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314 | /* |
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315 | * Step thru NC_VARIABLE array, seeking match on name. |
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316 | * Return varid or -1 on not found. |
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317 | * *varpp is set to the appropriate NC_var. |
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318 | * Formerly (sort of) |
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319 | NC_hvarid |
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320 | */ |
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321 | int |
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322 | NC_findvar(const NC_vararray *ncap, const char *uname, NC_var **varpp) |
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323 | { |
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324 | NC_var **loc; |
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325 | uint32_t shash; |
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326 | int varid; |
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327 | char *name; |
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328 | |
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329 | assert(ncap != NULL); |
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330 | |
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331 | if(ncap->nelems == 0) |
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332 | return -1; |
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333 | |
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334 | loc = (NC_var **) ncap->value; |
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335 | |
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336 | /* normalized version of uname */ |
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337 | name = (char *)utf8proc_NFC((const unsigned char *)uname); |
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338 | if(name == NULL) |
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339 | return NC_ENOMEM; |
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340 | shash = hash_fast(name, strlen(name)); |
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341 | |
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342 | for(varid = 0; (size_t) varid < ncap->nelems; varid++, loc++) |
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343 | { |
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344 | if((*loc)->hash == shash && |
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345 | strncmp((*loc)->name->cp, name, strlen(name)) == 0) |
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346 | { |
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347 | if(varpp != NULL) |
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348 | *varpp = *loc; |
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349 | free(name); |
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350 | return(varid); /* Normal return */ |
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351 | } |
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352 | } |
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353 | free(name); |
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354 | return(-1); /* not found */ |
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355 | } |
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356 | |
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357 | /* |
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358 | * For a netcdf type |
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359 | * return the size of one element in the external representation. |
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360 | * Note that arrays get rounded up to X_ALIGN boundaries. |
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361 | * Formerly |
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362 | NC_xtypelen |
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363 | * See also ncx_len() |
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364 | */ |
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365 | size_t |
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366 | ncx_szof(nc_type type) |
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367 | { |
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368 | switch(type){ |
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369 | case NC_BYTE: |
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370 | case NC_CHAR: |
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371 | return(1); |
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372 | case NC_SHORT : |
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373 | return(2); |
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374 | case NC_INT: |
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375 | return X_SIZEOF_INT; |
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376 | case NC_FLOAT: |
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377 | return X_SIZEOF_FLOAT; |
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378 | case NC_DOUBLE : |
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379 | return X_SIZEOF_DOUBLE; |
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380 | default: |
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381 | assert("ncx_szof invalid type" == 0); |
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382 | return 0; |
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383 | } |
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384 | } |
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385 | |
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386 | |
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387 | /* |
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388 | * 'compile' the shape and len of a variable |
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389 | * Formerly |
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390 | NC_var_shape(var, dims) |
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391 | */ |
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392 | int |
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393 | NC_var_shape(NC_var *varp, const NC_dimarray *dims) |
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394 | { |
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395 | size_t *shp, *op; |
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396 | off_t *dsp; |
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397 | int *ip; |
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398 | const NC_dim *dimp; |
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399 | off_t product = 1; |
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400 | |
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401 | varp->xsz = ncx_szof(varp->type); |
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402 | |
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403 | if(varp->ndims == 0) |
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404 | { |
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405 | goto out; |
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406 | } |
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407 | |
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408 | /* |
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409 | * use the user supplied dimension indices |
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410 | * to determine the shape |
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411 | */ |
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412 | for(ip = varp->dimids, op = varp->shape |
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413 | ; ip < &varp->dimids[varp->ndims]; ip++, op++) |
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414 | { |
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415 | if(*ip < 0 || (size_t) (*ip) >= ((dims != NULL) ? dims->nelems : 1) ) |
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416 | return NC_EBADDIM; |
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417 | |
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418 | dimp = elem_NC_dimarray(dims, (size_t)*ip); |
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419 | *op = dimp->size; |
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420 | if(*op == NC_UNLIMITED && ip != varp->dimids) |
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421 | return NC_EUNLIMPOS; |
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422 | } |
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423 | |
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424 | /* |
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425 | * Compute the dsizes |
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426 | */ |
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427 | /* ndims is > 0 here */ |
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428 | for(shp = varp->shape + varp->ndims -1, |
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429 | dsp = varp->dsizes + varp->ndims -1; |
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430 | shp >= varp->shape; |
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431 | shp--, dsp--) |
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432 | { |
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433 | if(!(shp == varp->shape && IS_RECVAR(varp))) |
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434 | { |
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435 | if( (off_t)(*shp) <= OFF_T_MAX / product ) |
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436 | { |
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437 | product *= *shp; |
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438 | } else |
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439 | { |
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440 | product = OFF_T_MAX ; |
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441 | } |
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442 | } |
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443 | *dsp = product; |
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444 | } |
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445 | |
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446 | |
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447 | out : |
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448 | if( varp->xsz <= (X_UINT_MAX - 1) / product ) /* if integer multiply will not overflow */ |
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449 | { |
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450 | varp->len = product * varp->xsz; |
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451 | switch(varp->type) { |
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452 | case NC_BYTE : |
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453 | case NC_CHAR : |
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454 | case NC_SHORT : |
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455 | if( varp->len%4 != 0 ) |
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456 | { |
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457 | varp->len += 4 - varp->len%4; /* round up */ |
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458 | /* *dsp += 4 - *dsp%4; */ |
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459 | } |
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460 | break; |
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461 | default: |
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462 | /* already aligned */ |
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463 | break; |
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464 | } |
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465 | } else |
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466 | { /* OK for last var to be "too big", indicated by this special len */ |
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467 | varp->len = X_UINT_MAX; |
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468 | } |
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469 | #if 0 |
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470 | arrayp("\tshape", varp->ndims, varp->shape); |
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471 | arrayp("\tdsizes", varp->ndims, varp->dsizes); |
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472 | #endif |
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473 | return NC_NOERR; |
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474 | } |
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475 | |
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476 | /* |
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477 | * Check whether variable size is less than or equal to vlen_max, |
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478 | * without overflowing in arithmetic calculations. If OK, return 1, |
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479 | * else, return 0. For CDF1 format or for CDF2 format on non-LFS |
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480 | * platforms, vlen_max should be 2^31 - 4, but for CDF2 format on |
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481 | * systems with LFS it should be 2^32 - 4. |
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482 | */ |
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483 | int |
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484 | NC_check_vlen(NC_var *varp, size_t vlen_max) { |
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485 | size_t prod=varp->xsz; /* product of xsz and dimensions so far */ |
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486 | |
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487 | int ii; |
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488 | |
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489 | assert(varp != NULL); |
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490 | for(ii = IS_RECVAR(varp) ? 1 : 0; ii < varp->ndims; ii++) { |
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491 | if (varp->shape[ii] > vlen_max / prod) { |
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492 | return 0; /* size in bytes won't fit in a 32-bit int */ |
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493 | } |
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494 | prod *= varp->shape[ii]; |
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495 | } |
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496 | return 1; /* OK */ |
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497 | } |
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498 | |
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499 | |
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500 | /* |
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501 | * Given valid ncp and varid, return var |
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502 | * else NULL on error |
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503 | * Formerly |
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504 | NC_hlookupvar() |
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505 | */ |
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506 | NC_var * |
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507 | NC_lookupvar(NC *ncp, int varid) |
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508 | { |
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509 | NC_var *varp; |
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510 | |
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511 | if(varid == NC_GLOBAL) |
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512 | { |
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513 | /* Global is error in this context */ |
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514 | return(NULL); |
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515 | } |
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516 | |
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517 | varp = elem_NC_vararray(&ncp->vars, (size_t)varid); |
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518 | if(varp == NULL) |
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519 | { |
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520 | return NULL; |
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521 | } |
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522 | |
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523 | assert(varp != NULL); |
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524 | |
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525 | return(varp); |
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526 | } |
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527 | |
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528 | |
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529 | /* Public */ |
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530 | |
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531 | int |
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532 | NC3_def_var( int ncid, const char *name, nc_type type, |
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533 | int ndims, const int *dimids, int *varidp) |
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534 | { |
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535 | int status; |
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536 | NC *ncp; |
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537 | int varid; |
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538 | NC_var *varp; |
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539 | |
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540 | status = NC_check_id(ncid, &ncp); |
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541 | if(status != NC_NOERR) |
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542 | return status; |
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543 | |
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544 | if(!NC_indef(ncp)) |
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545 | { |
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546 | return NC_ENOTINDEFINE; |
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547 | } |
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548 | |
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549 | status = NC_check_name(name); |
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550 | if(status != NC_NOERR) |
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551 | return status; |
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552 | |
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553 | status = nc_cktype(type); |
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554 | if(status != NC_NOERR) |
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555 | return status; |
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556 | |
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557 | /* cast needed for braindead systems with signed size_t */ |
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558 | if((unsigned long) ndims > X_INT_MAX) /* Backward compat */ |
---|
559 | { |
---|
560 | return NC_EINVAL; |
---|
561 | } |
---|
562 | |
---|
563 | if(ncp->vars.nelems >= NC_MAX_VARS) |
---|
564 | { |
---|
565 | return NC_EMAXVARS; |
---|
566 | } |
---|
567 | |
---|
568 | varid = NC_findvar(&ncp->vars, name, &varp); |
---|
569 | if(varid != -1) |
---|
570 | { |
---|
571 | return NC_ENAMEINUSE; |
---|
572 | } |
---|
573 | |
---|
574 | varp = new_NC_var(name, type, ndims, dimids); |
---|
575 | if(varp == NULL) |
---|
576 | return NC_ENOMEM; |
---|
577 | |
---|
578 | status = NC_var_shape(varp, &ncp->dims); |
---|
579 | if(status != NC_NOERR) |
---|
580 | { |
---|
581 | free_NC_var(varp); |
---|
582 | return status; |
---|
583 | } |
---|
584 | |
---|
585 | status = incr_NC_vararray(&ncp->vars, varp); |
---|
586 | if(status != NC_NOERR) |
---|
587 | { |
---|
588 | free_NC_var(varp); |
---|
589 | return status; |
---|
590 | } |
---|
591 | |
---|
592 | if(varidp != NULL) |
---|
593 | *varidp = (int)ncp->vars.nelems -1; /* varid */ |
---|
594 | return NC_NOERR; |
---|
595 | } |
---|
596 | |
---|
597 | |
---|
598 | int |
---|
599 | NC3_inq_varid(int ncid, const char *name, int *varid_ptr) |
---|
600 | { |
---|
601 | int status; |
---|
602 | NC *ncp; |
---|
603 | NC_var *varp; |
---|
604 | int varid; |
---|
605 | |
---|
606 | status = NC_check_id(ncid, &ncp); |
---|
607 | if(status != NC_NOERR) |
---|
608 | return status; |
---|
609 | |
---|
610 | varid = NC_findvar(&ncp->vars, name, &varp); |
---|
611 | if(varid == -1) |
---|
612 | { |
---|
613 | return NC_ENOTVAR; |
---|
614 | } |
---|
615 | |
---|
616 | *varid_ptr = varid; |
---|
617 | return NC_NOERR; |
---|
618 | } |
---|
619 | |
---|
620 | |
---|
621 | int |
---|
622 | NC3_inq_var(int ncid, |
---|
623 | int varid, |
---|
624 | char *name, |
---|
625 | nc_type *typep, |
---|
626 | int *ndimsp, |
---|
627 | int *dimids, |
---|
628 | int *nattsp) |
---|
629 | { |
---|
630 | int status; |
---|
631 | NC *ncp; |
---|
632 | NC_var *varp; |
---|
633 | size_t ii; |
---|
634 | |
---|
635 | status = NC_check_id(ncid, &ncp); |
---|
636 | if(status != NC_NOERR) |
---|
637 | return status; |
---|
638 | |
---|
639 | varp = elem_NC_vararray(&ncp->vars, (size_t)varid); |
---|
640 | if(varp == NULL) |
---|
641 | return NC_ENOTVAR; |
---|
642 | |
---|
643 | if(name != NULL) |
---|
644 | { |
---|
645 | (void) strncpy(name, varp->name->cp, varp->name->nchars); |
---|
646 | name[varp->name->nchars] = 0; |
---|
647 | } |
---|
648 | |
---|
649 | if(typep != 0) |
---|
650 | *typep = varp->type; |
---|
651 | if(ndimsp != 0) |
---|
652 | { |
---|
653 | *ndimsp = (int) varp->ndims; |
---|
654 | } |
---|
655 | if(dimids != 0) |
---|
656 | { |
---|
657 | for(ii = 0; ii < varp->ndims; ii++) |
---|
658 | { |
---|
659 | dimids[ii] = varp->dimids[ii]; |
---|
660 | } |
---|
661 | } |
---|
662 | if(nattsp != 0) |
---|
663 | { |
---|
664 | *nattsp = (int) varp->attrs.nelems; |
---|
665 | } |
---|
666 | |
---|
667 | return NC_NOERR; |
---|
668 | } |
---|
669 | |
---|
670 | int |
---|
671 | NC3_rename_var(int ncid, int varid, const char *unewname) |
---|
672 | { |
---|
673 | int status; |
---|
674 | NC *ncp; |
---|
675 | NC_var *varp; |
---|
676 | NC_string *old, *newStr; |
---|
677 | int other; |
---|
678 | char *newname; /* normalized */ |
---|
679 | |
---|
680 | status = NC_check_id(ncid, &ncp); |
---|
681 | if(status != NC_NOERR) |
---|
682 | return status; |
---|
683 | |
---|
684 | if(NC_readonly(ncp)) |
---|
685 | { |
---|
686 | return NC_EPERM; |
---|
687 | } |
---|
688 | |
---|
689 | status = NC_check_name(unewname); |
---|
690 | if(status != NC_NOERR) |
---|
691 | return status; |
---|
692 | |
---|
693 | /* check for name in use */ |
---|
694 | other = NC_findvar(&ncp->vars, unewname, &varp); |
---|
695 | if(other != -1) |
---|
696 | { |
---|
697 | return NC_ENAMEINUSE; |
---|
698 | } |
---|
699 | |
---|
700 | varp = NC_lookupvar(ncp, varid); |
---|
701 | if(varp == NULL) |
---|
702 | { |
---|
703 | /* invalid varid */ |
---|
704 | return NC_ENOTVAR; /* TODO: is this the right error code? */ |
---|
705 | } |
---|
706 | |
---|
707 | old = varp->name; |
---|
708 | newname = (char *)utf8proc_NFC((const unsigned char *)unewname); |
---|
709 | if(newname == NULL) |
---|
710 | return NC_ENOMEM; |
---|
711 | if(NC_indef(ncp)) |
---|
712 | { |
---|
713 | newStr = new_NC_string(strlen(newname),newname); |
---|
714 | free(newname); |
---|
715 | if(newStr == NULL) |
---|
716 | return(-1); |
---|
717 | varp->name = newStr; |
---|
718 | varp->hash = hash_fast(newStr->cp, strlen(newStr->cp)); |
---|
719 | free_NC_string(old); |
---|
720 | return NC_NOERR; |
---|
721 | } |
---|
722 | |
---|
723 | /* else, not in define mode */ |
---|
724 | status = set_NC_string(varp->name, newname); |
---|
725 | varp->hash = hash_fast(newname, strlen(newname)); |
---|
726 | free(newname); |
---|
727 | if(status != NC_NOERR) |
---|
728 | return status; |
---|
729 | |
---|
730 | set_NC_hdirty(ncp); |
---|
731 | |
---|
732 | if(NC_doHsync(ncp)) |
---|
733 | { |
---|
734 | status = NC_sync(ncp); |
---|
735 | if(status != NC_NOERR) |
---|
736 | return status; |
---|
737 | } |
---|
738 | |
---|
739 | return NC_NOERR; |
---|
740 | } |
---|