1 | import time, os, sys |
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2 | import logging |
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3 | import copy |
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4 | import DataLoader |
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5 | from xml.dom.minidom import parse |
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6 | from lxml import etree |
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7 | |
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8 | from DataLoader.readers.cansas_reader import Reader as CansasReader |
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9 | from DataLoader.readers.cansas_reader import get_content |
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10 | from sans.guiframe.utils import format_number |
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11 | from sans.guiframe.dataFitting import Theory1D, Data1D |
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12 | INVNODE_NAME = 'invariant' |
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13 | CANSAS_NS = "cansas1d/1.0" |
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14 | # default state |
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15 | list = {'file': 'None', |
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16 | 'compute_num':0, |
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17 | 'state_num':0, |
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18 | 'is_time_machine':False, |
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19 | 'background_tcl':0.0, |
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20 | 'scale_tcl':1.0, |
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21 | 'contrast_tcl':1.0, |
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22 | 'porod_constant_tcl':'', |
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23 | 'npts_low_tcl':10, |
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24 | 'npts_high_tcl':10, |
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25 | 'power_high_tcl':4.0, |
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26 | 'power_low_tcl': 4.0, |
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27 | 'enable_high_cbox':False, |
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28 | 'enable_low_cbox':False, |
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29 | 'guinier': True, |
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30 | 'power_law_high': False, |
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31 | 'power_law_low': False, |
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32 | 'fit_enable_high': False, |
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33 | 'fit_enable_low': False, |
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34 | 'fix_enable_high':True, |
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35 | 'fix_enable_low':True, |
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36 | 'volume_tcl':'', |
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37 | 'volume_err_tcl':'', |
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38 | 'surface_tcl':'', |
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39 | 'surface_err_tcl':''} |
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40 | # list of states: This list will be filled as panel init and the number of states increases |
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41 | state_list = {} |
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42 | bookmark_list = {} |
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43 | # list of input parameters (will be filled up on panel init) used by __str__ |
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44 | input_list = {'background_tcl':0, |
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45 | 'scale_tcl':0, |
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46 | 'contrast_tcl':0, |
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47 | 'porod_constant_tcl':'', |
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48 | 'npts_low_tcl':0, |
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49 | 'npts_high_tcl':0, |
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50 | 'power_high_tcl':0, |
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51 | 'power_low_tcl': 0} |
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52 | # list of output parameters (order sensitive) used by __str__ |
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53 | output_list = [["qstar_low", "Q* from low Q extrapolation [1/(cm*A)]"], |
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54 | ["qstar_low_err", "dQ* from low Q extrapolation"], |
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55 | ["qstar_low_percent", "Q* percent from low Q extrapolation"], |
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56 | ["qstar", "Q* from data [1/(cm*A)]"], |
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57 | ["qstar_err", "dQ* from data"], |
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58 | ["qstar_percent", "Q* percent from data"], |
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59 | ["qstar_high", "Q* from high Q extrapolation [1/(cm*A)]"], |
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60 | ["qstar_high_err", "dQ* from high Q extrapolation"], |
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61 | ["qstar_high_percent", "Q* percent from low Q extrapolation"], |
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62 | ["qstar_total", "total Q* [1/(cm*A)]"], |
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63 | ["qstar_total_err", "total dQ*"], |
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64 | ["volume", "volume fraction"], |
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65 | ["volume_err", "volume fraction error"], |
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66 | ["surface", "specific surface"], |
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67 | ["surface_err", "specific surface error"]] |
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68 | |
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69 | |
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70 | |
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71 | class InvariantState(object): |
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72 | """ |
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73 | Class to hold the state information of the InversionControl panel. |
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74 | """ |
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75 | def __init__(self): |
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76 | """ |
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77 | Default values |
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78 | """ |
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79 | # Input |
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80 | self.file = None |
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81 | self.data = Data1D(x=[], y=[], dx=None, dy=None) |
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82 | self.theory_lowQ = Theory1D(x=[], y=[], dy=None) |
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83 | self.theory_highQ = Theory1D(x=[], y=[], dy=None) |
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84 | #self.is_time_machine = False |
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85 | self.saved_state = list |
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86 | self.state_list = state_list |
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87 | self.bookmark_list = bookmark_list |
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88 | self.input_list = input_list |
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89 | self.output_list = output_list |
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90 | |
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91 | self.compute_num = 0 |
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92 | self.state_num = 0 |
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93 | self.timestamp = ('00:00:00', '00/00/0000') |
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94 | self.container = None |
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95 | #plot image |
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96 | self.wximbmp = None |
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97 | # report_html strings |
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98 | import sans.perspectives.invariant as invariant |
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99 | path = invariant.get_data_path(media='media') |
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100 | path_report_html= os.path.join(path,"report_template.html") |
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101 | html_template=open(path_report_html,"r") |
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102 | self.template_str = html_template.read() |
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103 | self.report_str = self.template_str |
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104 | #self.report_str_save = None |
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105 | html_template.close() |
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106 | |
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107 | |
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108 | |
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109 | def __str__(self): |
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110 | """ |
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111 | Pretty print |
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112 | |
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113 | : return: string representing the state |
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114 | """ |
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115 | # Input string |
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116 | compute_num = self.saved_state['compute_num'] |
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117 | compute_state = self.state_list[str(compute_num)] |
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118 | my_time, date = self.timestamp |
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119 | file_name = self.file |
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120 | |
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121 | state_num = int(self.saved_state['state_num']) |
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122 | state = "\n[Invariant computation for %s: "% file_name |
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123 | state += "performed at %s on %s] \n"%(my_time, date) |
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124 | state += "State No.: %d \n"% state_num |
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125 | state += "\n=== Inputs ===\n" |
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126 | |
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127 | # text ctl general inputs ( excluding extrapolation text ctl) |
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128 | for key,value in self.input_list.iteritems(): |
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129 | if value == '': |
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130 | continue |
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131 | key_split = key.split('_') |
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132 | max_ind = len(key_split)-1 |
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133 | if key_split[max_ind] == 'tcl': |
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134 | name ="" |
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135 | if key_split[1]== 'low' or key_split[1]== 'high': |
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136 | continue |
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137 | for ind in range(0,max_ind): |
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138 | name +=" %s"%key_split[ind] |
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139 | state += "%s: %s\n"% (name.lstrip(" "),value) |
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140 | |
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141 | # other input parameters |
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142 | extra_lo = compute_state['enable_low_cbox'] |
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143 | if compute_state['enable_low_cbox']: |
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144 | if compute_state['guinier']: |
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145 | extra_lo = 'Guinier' |
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146 | else: |
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147 | extra_lo = 'Power law' |
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148 | extra_hi = compute_state['enable_high_cbox'] |
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149 | if compute_state['enable_high_cbox']: |
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150 | extra_hi = 'Power law' |
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151 | state += "\nExtrapolation: High=%s; Low=%s\n" %(extra_hi,extra_lo) |
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152 | low_off = False |
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153 | high_off = False |
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154 | for key,value in self.input_list.iteritems(): |
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155 | key_split = key.split('_') |
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156 | max_ind = len(key_split)-1 |
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157 | if key_split[max_ind] == 'tcl': |
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158 | name ="" |
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159 | # check each buttons whether or not ON or OFF |
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160 | if key_split[1]== 'low' or key_split[1]== 'high': |
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161 | if not compute_state['enable_low_cbox'] and key_split[max_ind-1] == 'low': |
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162 | low_off = True |
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163 | continue |
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164 | elif not compute_state['enable_high_cbox'] and key_split[max_ind-1]== 'high': |
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165 | high_off = True |
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166 | continue |
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167 | elif extra_lo == 'Guinier' and key_split[0]== 'power' and key_split[max_ind-1]== 'low': |
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168 | continue |
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169 | for ind in range(0,max_ind): |
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170 | name +=" %s"%key_split[ind] |
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171 | name = name.lstrip(" ") |
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172 | if name == "power low" : |
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173 | if compute_state['fix_enable_low']: |
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174 | name += ' (Fixed)' |
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175 | else: |
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176 | name += ' (Fitted)' |
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177 | if name == "power high" : |
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178 | if compute_state['fix_enable_high']: |
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179 | name += ' (Fixed)' |
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180 | else: |
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181 | name += ' (Fitted)' |
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182 | state += "%s: %s\n"% (name,value) |
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183 | # Outputs |
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184 | state += "\n=== Outputs ===" |
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185 | for item in output_list: |
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186 | item_split = item[0].split('_') |
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187 | # Exclude the extrapolation that turned off |
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188 | if len(item_split)>1: |
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189 | if low_off and item_split[1] == 'low': continue |
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190 | if high_off and item_split[1] == 'high': continue |
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191 | max_ind = len(item_split)-1 |
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192 | value = None |
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193 | try: |
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194 | # Q* outputs |
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195 | exec "value = self.container.%s\n"% item[0] |
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196 | except: |
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197 | # other outputs than Q* |
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198 | name = item[0]+"_tcl" |
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199 | exec "value = self.saved_state['%s']"% name |
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200 | |
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201 | # Exclude the outputs w/'' |
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202 | if value == '': continue |
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203 | |
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204 | # Error outputs |
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205 | if item_split[max_ind] == 'err': |
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206 | state += "+- %s "%format_number(value) |
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207 | |
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208 | # Percentage outputs |
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209 | elif item_split[max_ind] == 'percent': |
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210 | try: |
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211 | value = float(value)*100 |
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212 | except: |
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213 | pass |
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214 | state += "(%s %s)"%(format_number(value),'o/o') |
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215 | # Outputs |
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216 | else: |
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217 | state += "\n%s: %s "%(item[1],format_number(value,high=True)) |
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218 | # Include warning msg |
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219 | state += "\n\nNote:\n" + self.container.warning_msg |
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220 | |
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221 | return state |
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222 | |
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223 | |
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224 | def clone_state(self): |
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225 | """ |
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226 | deepcopy the state |
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227 | """ |
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228 | return copy.deepcopy(self.saved_state) |
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229 | |
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230 | |
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231 | def toXML(self, file="inv_state.inv", doc=None, entry_node=None): |
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232 | """ |
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233 | Writes the state of the InversionControl panel to file, as XML. |
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234 | |
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235 | Compatible with standalone writing, or appending to an |
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236 | already existing XML document. In that case, the XML document |
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237 | is required. An optional entry node in the XML document may also be given. |
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238 | |
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239 | : param file: file to write to |
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240 | : param doc: XML document object [optional] |
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241 | : param entry_node: XML node within the XML document at which we will append the data [optional] |
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242 | """ |
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243 | from xml.dom.minidom import getDOMImplementation |
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244 | import time |
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245 | timestamp = time.time() |
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246 | # Check whether we have to write a standalone XML file |
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247 | if doc is None: |
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248 | impl = getDOMImplementation() |
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249 | |
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250 | doc_type = impl.createDocumentType(INVNODE_NAME, "1.0", "1.0") |
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251 | |
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252 | newdoc = impl.createDocument(None, INVNODE_NAME, doc_type) |
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253 | top_element = newdoc.documentElement |
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254 | else: |
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255 | # We are appending to an existing document |
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256 | newdoc = doc |
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257 | top_element = newdoc.createElement(INVNODE_NAME) |
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258 | if entry_node is None: |
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259 | newdoc.documentElement.appendChild(top_element) |
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260 | else: |
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261 | entry_node.appendChild(top_element) |
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262 | |
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263 | attr = newdoc.createAttribute("version") |
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264 | attr.nodeValue = '1.0' |
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265 | top_element.setAttributeNode(attr) |
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266 | |
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267 | # File name |
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268 | element = newdoc.createElement("filename") |
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269 | if self.file is not None: |
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270 | element.appendChild(newdoc.createTextNode(str(self.file))) |
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271 | else: |
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272 | element.appendChild(newdoc.createTextNode(str(file))) |
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273 | top_element.appendChild(element) |
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274 | |
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275 | element = newdoc.createElement("timestamp") |
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276 | element.appendChild(newdoc.createTextNode(time.ctime(timestamp))) |
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277 | attr = newdoc.createAttribute("epoch") |
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278 | attr.nodeValue = str(timestamp) |
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279 | element.setAttributeNode(attr) |
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280 | top_element.appendChild(element) |
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281 | |
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282 | # Current state |
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283 | state = newdoc.createElement("state") |
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284 | top_element.appendChild(state) |
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285 | |
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286 | for name,value in self.saved_state.iteritems(): |
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287 | element = newdoc.createElement(str(name)) |
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288 | element.appendChild(newdoc.createTextNode(str(value))) |
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289 | state.appendChild(element) |
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290 | |
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291 | # State history list |
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292 | history = newdoc.createElement("history") |
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293 | top_element.appendChild(history) |
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294 | |
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295 | for name, value in self.state_list.iteritems(): |
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296 | history_element = newdoc.createElement('state_'+str(name)) |
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297 | for state_name,state_value in value.iteritems(): |
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298 | state_element = newdoc.createElement(str(state_name)) |
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299 | state_element.appendChild(newdoc.createTextNode(str(state_value))) |
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300 | history_element.appendChild(state_element) |
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301 | #history_element.appendChild(state_list_element) |
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302 | history.appendChild(history_element) |
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303 | |
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304 | # Bookmarks bookmark_list[self.bookmark_num] = [my_time,date,state,comp_state] |
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305 | bookmark = newdoc.createElement("bookmark") |
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306 | top_element.appendChild(bookmark) |
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307 | item_list = ['time','date','state','comp_state'] |
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308 | for name, value_list in self.bookmark_list.iteritems(): |
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309 | element = newdoc.createElement('mark_'+ str(name)) |
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310 | time,date,state,comp_state = value_list |
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311 | time_element = newdoc.createElement('time') |
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312 | time_element.appendChild(newdoc.createTextNode(str(value_list[0]))) |
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313 | date_element = newdoc.createElement('date') |
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314 | date_element.appendChild(newdoc.createTextNode(str(value_list[1]))) |
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315 | state_list_element = newdoc.createElement('state') |
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316 | comp_state_list_element = newdoc.createElement('comp_state') |
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317 | for state_name,state_value in value_list[2].iteritems(): |
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318 | state_element = newdoc.createElement(str(state_name)) |
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319 | state_element.appendChild(newdoc.createTextNode(str(state_value))) |
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320 | state_list_element.appendChild(state_element) |
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321 | for comp_name,comp_value in value_list[3].iteritems(): |
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322 | comp_element = newdoc.createElement(str(comp_name)) |
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323 | comp_element.appendChild(newdoc.createTextNode(str(comp_value))) |
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324 | comp_state_list_element.appendChild(comp_element) |
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325 | element.appendChild(time_element) |
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326 | element.appendChild(date_element) |
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327 | element.appendChild(state_list_element) |
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328 | element.appendChild(comp_state_list_element) |
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329 | bookmark.appendChild(element) |
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330 | |
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331 | # Save the file |
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332 | if doc is None: |
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333 | fd = open('test000', 'w') |
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334 | fd.write(newdoc.toprettyxml()) |
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335 | fd.close() |
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336 | return None |
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337 | else: |
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338 | return newdoc.toprettyxml() |
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339 | |
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340 | def fromXML(self, file=None, node=None): |
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341 | """ |
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342 | Load invariant states from a file |
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343 | |
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344 | : param file: .inv file |
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345 | : param node: node of a XML document to read from |
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346 | """ |
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347 | if file is not None: |
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348 | raise RuntimeError, "InvariantSate no longer supports non-CanSAS format for invariant files" |
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349 | |
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350 | if node.get('version')\ |
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351 | and node.get('version') == '1.0': |
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352 | |
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353 | # Get file name |
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354 | entry = get_content('ns:filename', node) |
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355 | if entry is not None: |
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356 | self.file = entry.text.strip() |
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357 | |
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358 | # Get time stamp |
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359 | entry = get_content('ns:timestamp', node) |
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360 | if entry is not None and entry.get('epoch'): |
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361 | try: |
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362 | timestamp = (entry.get('epoch')) |
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363 | except: |
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364 | logging.error("InvariantSate.fromXML: Could not read timestamp\n %s" % sys.exc_value) |
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365 | |
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366 | # Parse bookmarks |
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367 | entry_bookmark = get_content('ns:bookmark', node) |
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368 | |
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369 | for ind in range(1,len(entry_bookmark)+1): |
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370 | temp_state = {} |
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371 | temp_bookmark = {} |
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372 | entry = get_content('ns:mark_%s' % ind, entry_bookmark) |
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373 | |
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374 | if entry is not None: |
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375 | time = get_content('ns:time', entry ) |
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376 | val_time = str(time.text.strip()) |
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377 | date = get_content('ns:date', entry ) |
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378 | val_date = str(date.text.strip()) |
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379 | state_entry = get_content('ns:state', entry ) |
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380 | for item in list: |
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381 | |
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382 | input_field = get_content('ns:%s' % item, state_entry ) |
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383 | val = str(input_field.text.strip()) |
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384 | |
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385 | if input_field is not None: |
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386 | try: |
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387 | exec "temp_state['%s'] = %s"% (item,val) |
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388 | except: |
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389 | exec "temp_state['%s'] = '%s'"% (item,val) |
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390 | |
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391 | comp_entry = get_content('ns:comp_state', entry ) |
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392 | |
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393 | for item in list: |
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394 | input_field = get_content('ns:%s' % item, comp_entry ) |
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395 | val = str(input_field.text.strip()) |
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396 | if input_field is not None: |
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397 | try: |
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398 | exec "temp_bookmark['%s'] = %s"% (item,val) |
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399 | except: |
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400 | exec "temp_bookmark['%s'] = '%s'"% (item,val) |
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401 | try: |
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402 | exec "self.bookmark_list[%s] = [val_time,val_date,temp_state,temp_bookmark]"% ind |
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403 | |
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404 | except: |
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405 | raise "missing components of bookmarks..." |
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406 | |
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407 | # Parse histories |
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408 | entry_history = get_content('ns:history', node) |
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409 | |
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410 | for ind in range(0,len(entry_history)): |
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411 | temp_state = {} |
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412 | entry = get_content('ns:state_%s' % ind, entry_history) |
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413 | |
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414 | if entry is not None: |
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415 | for item in list: |
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416 | input_field = get_content('ns:%s' % item, entry ) |
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417 | val = str(input_field.text.strip()) |
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418 | |
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419 | if input_field is not None: |
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420 | try: |
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421 | exec "temp_state['%s'] = %s"% (item,val) |
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422 | except: |
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423 | exec "temp_state['%s'] = '%s'"% (item,val) |
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424 | finally: |
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425 | exec "self.state_list['%s'] = temp_state"% ind |
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426 | |
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427 | # Parse current state (ie, saved_state) |
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428 | entry = get_content('ns:state', node) |
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429 | if entry is not None: |
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430 | for item in list: |
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431 | input_field = get_content('ns:%s' % item, entry) |
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432 | val = str(input_field.text.strip()) |
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433 | if input_field is not None: |
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434 | self.set_saved_state(name=item, value=val) |
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435 | |
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436 | def set_report_string(self): |
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437 | """ |
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438 | Get the values (strings) from __str__ for report |
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439 | """ |
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440 | strings = self.__str__() |
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441 | |
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442 | # default string values |
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443 | for num in range (1,19): |
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444 | exec "s_%s = 'NA'"% str(num) |
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445 | lines = strings.split('\n') |
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446 | # get all string values from __str__() |
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447 | for line in range(0,len(lines)): |
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448 | if line == 1: |
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449 | s_1 = lines[1] |
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450 | elif line == 2: |
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451 | s_2 = lines[2] |
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452 | else: |
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453 | item = lines[line].split(':') |
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454 | item[0] = item[0].strip() |
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455 | if item[0]== "scale": |
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456 | s_3 = item[1] |
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457 | elif item[0] == "porod constant": |
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458 | s_4 = item[1] |
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459 | elif item[0] == "background": |
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460 | s_5 = item[1] |
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461 | elif item[0] == "contrast": |
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462 | s_6 = item[1] |
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463 | elif item[0] == "Extrapolation": |
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464 | extra = item[1].split(";") |
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465 | bool_0 = extra[0].split("=") |
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466 | bool_1 = extra[1].split("=") |
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467 | s_7 = " "+bool_0[0]+"Q region = "+bool_0[1] |
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468 | s_8 = " "+bool_1[0]+"Q region = "+bool_1[1] |
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469 | elif item[0]=="npts low": |
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470 | s_9 = item[1] |
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471 | elif item[0]=="npts high": |
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472 | s_10 = item[1] |
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473 | elif item[0] == "volume fraction": |
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474 | s_17 = item[1] |
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475 | elif item[0] == "specific surface": |
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476 | s_18 = item[1] |
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477 | elif item[0].split("(")[0].strip()=="power high": |
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478 | s_11 = item[0]+" ="+item[1] |
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479 | elif item[0].split("(")[0].strip()=="power low": |
---|
480 | s_12 = item[0]+" ="+item[1] |
---|
481 | elif item[0].split("[")[0].strip()=="Q* from low Q extrapolation": |
---|
482 | s_13 = item[1] |
---|
483 | elif item[0].split("[")[0].strip()=="Q* from data": |
---|
484 | s_14 = item[1] |
---|
485 | elif item[0].split("[")[0].strip()=="Q* from high Q extrapolation": |
---|
486 | s_15 = item[1] |
---|
487 | elif item[0].split("[")[0].strip()=="total Q*": |
---|
488 | s_16 = item[1] |
---|
489 | else: |
---|
490 | continue |
---|
491 | |
---|
492 | # make plot image |
---|
493 | self.set_plot_state(extra_high=bool_0[1],extra_low=bool_1[1]) |
---|
494 | # get ready for report with setting all the html strings |
---|
495 | self.report_str = str(self.template_str)% (s_1,s_2,s_3,s_4,s_5,s_6,s_7,s_8,s_9,s_10,s_11,s_12,s_13,s_14,s_15,s_16,s_17,s_18,self.file,"%s") |
---|
496 | |
---|
497 | |
---|
498 | def set_saved_state(self, name, value): |
---|
499 | """ |
---|
500 | Set the state list |
---|
501 | |
---|
502 | : param name: name of the state component |
---|
503 | : param value: value of the state component |
---|
504 | """ |
---|
505 | rb_list = [['power_law_low','guinier'],['fit_enable_low','fix_enable_low'],['fit_enable_high','fix_enable_high']] |
---|
506 | |
---|
507 | try: |
---|
508 | if value == None or value.lstrip().rstrip() =='': |
---|
509 | exec "self.%s = '%s'" % (name, value) |
---|
510 | exec "self.saved_state['%s'] = '%s'" % (name, value) |
---|
511 | else: |
---|
512 | exec 'self.%s = %s' % (name, value) |
---|
513 | exec "self.saved_state['%s'] = %s" % (name, value) |
---|
514 | |
---|
515 | |
---|
516 | # set the count part of radio button clicked False for the saved_state |
---|
517 | for title,content in rb_list: |
---|
518 | if name == title: |
---|
519 | name = content |
---|
520 | value = False |
---|
521 | elif name == content: |
---|
522 | name = title |
---|
523 | value = False |
---|
524 | exec "self.saved_state['%s'] = '%s'" % (name, value) |
---|
525 | self.state_num = self.saved_state['state_num'] |
---|
526 | except: |
---|
527 | pass |
---|
528 | |
---|
529 | def set_plot_state(self,extra_high=False,extra_low=False): |
---|
530 | """ |
---|
531 | Build image state that wx.html understand |
---|
532 | by plotting, putting it into wx.FileSystem image object |
---|
533 | |
---|
534 | : extrap_high,extra_low: low/high extrapolations are possible extra-plots |
---|
535 | """ |
---|
536 | # some imports |
---|
537 | import cStringIO |
---|
538 | import matplotlib,wx |
---|
539 | matplotlib.use('Agg') |
---|
540 | import matplotlib.pyplot as plt |
---|
541 | import Image |
---|
542 | |
---|
543 | #we use simple plot, not plotpanel |
---|
544 | #make matlab figure |
---|
545 | fig = plt.figure() |
---|
546 | graph = fig.add_subplot(111) |
---|
547 | |
---|
548 | #data plot |
---|
549 | graph.errorbar(self.data.x, self.data.y, yerr=self.data.dy, fmt='o') |
---|
550 | #low Q extrapolation fit plot |
---|
551 | if not extra_low == 'False': |
---|
552 | graph.plot(self.theory_lowQ.x,self.theory_lowQ.y) |
---|
553 | #high Q extrapolation fit plot |
---|
554 | if not extra_high == 'False': |
---|
555 | graph.plot(self.theory_highQ.x,self.theory_highQ.y) |
---|
556 | graph.set_xscale("log", nonposx='clip') |
---|
557 | graph.set_yscale("log", nonposy='clip') |
---|
558 | plt.xlabel('$\\rm{Q}(\\AA^{-1})$', fontsize = 12) |
---|
559 | plt.ylabel('$\\rm{Intensity}(cm^{-1})$', fontsize = 12) |
---|
560 | |
---|
561 | #make python.Image object |
---|
562 | imagedata = cStringIO.StringIO() |
---|
563 | fig.savefig(imagedata,format='png') |
---|
564 | imagedata.seek(0) |
---|
565 | img = Image.open(imagedata) |
---|
566 | #convert to wx.Image |
---|
567 | wxim = wx.EmptyImage(img.size[0],img.size[1]) |
---|
568 | wxim.SetData(img.convert("RGB").tostring()) |
---|
569 | #get the dynamic image for the htmlwindow |
---|
570 | wximbmp = wx.BitmapFromImage(wxim) |
---|
571 | #store the image in wx.FileSystem Object |
---|
572 | wx.FileSystem.AddHandler(wx.MemoryFSHandler()) |
---|
573 | # use wx.MemoryFSHandler |
---|
574 | self.imgRAM = wx.MemoryFSHandler() |
---|
575 | #AddFile, image can be retrieved with 'memory:filename' |
---|
576 | self.imgRAM.AddFile('img_inv.png',wximbmp, wx.BITMAP_TYPE_PNG) |
---|
577 | |
---|
578 | self.wximbmp = 'memory:img_inv.png' |
---|
579 | self.image = img |
---|
580 | |
---|
581 | class Reader(CansasReader): |
---|
582 | """ |
---|
583 | Class to load a .inv invariant file |
---|
584 | """ |
---|
585 | ## File type |
---|
586 | type_name = "Invariant" |
---|
587 | |
---|
588 | ## Wildcards |
---|
589 | type = ["Invariant file (*.inv)|*.inv"] |
---|
590 | ## List of allowed extensions |
---|
591 | ext=['.inv', '.INV'] |
---|
592 | |
---|
593 | def __init__(self, call_back, cansas=True): |
---|
594 | """ |
---|
595 | Initialize the call-back method to be called |
---|
596 | after we load a file |
---|
597 | |
---|
598 | : param call_back: call-back method |
---|
599 | : param cansas: True = files will be written/read in CanSAS format |
---|
600 | False = write CanSAS format |
---|
601 | """ |
---|
602 | ## Call back method to be executed after a file is read |
---|
603 | self.call_back = call_back |
---|
604 | ## CanSAS format flag |
---|
605 | self.cansas = cansas |
---|
606 | |
---|
607 | def read(self, path): |
---|
608 | """ |
---|
609 | Load a new invariant state from file |
---|
610 | |
---|
611 | : param path: file path |
---|
612 | : return: None |
---|
613 | """ |
---|
614 | if self.cansas==True: |
---|
615 | return self._read_cansas(path) |
---|
616 | else: |
---|
617 | return self._read_standalone(path) |
---|
618 | |
---|
619 | def _read_standalone(self, path): |
---|
620 | """ |
---|
621 | Load a new invariant state from file. |
---|
622 | The invariant node is assumed to be the top element. |
---|
623 | |
---|
624 | : param path: file path |
---|
625 | : return: None |
---|
626 | """ |
---|
627 | # Read the new state from file |
---|
628 | state = InvariantState() |
---|
629 | |
---|
630 | state.fromXML(file=path) |
---|
631 | |
---|
632 | # Call back to post the new state |
---|
633 | self.call_back(state) |
---|
634 | return None |
---|
635 | |
---|
636 | def _parse_state(self, entry): |
---|
637 | """ |
---|
638 | Read an invariant result from an XML node |
---|
639 | |
---|
640 | : param entry: XML node to read from |
---|
641 | : return: InvariantState object |
---|
642 | """ |
---|
643 | # Create an empty state |
---|
644 | state = InvariantState() |
---|
645 | |
---|
646 | # Locate the invariant node |
---|
647 | try: |
---|
648 | nodes = entry.xpath('ns:%s' % INVNODE_NAME, namespaces={'ns': CANSAS_NS}) |
---|
649 | state.fromXML(node=nodes[0]) |
---|
650 | except: |
---|
651 | logging.info("XML document does not contain invariant information.\n %s" % sys.exc_value) |
---|
652 | return state |
---|
653 | |
---|
654 | def _read_cansas(self, path): |
---|
655 | """ |
---|
656 | Load data and invariant information from a CanSAS XML file. |
---|
657 | |
---|
658 | : param path: file path |
---|
659 | : return: Data1D object if a single SASentry was found, |
---|
660 | or a list of Data1D objects if multiple entries were found, |
---|
661 | or None of nothing was found |
---|
662 | : raise RuntimeError: when the file can't be opened |
---|
663 | : raise ValueError: when the length of the data vectors are inconsistent |
---|
664 | """ |
---|
665 | output = [] |
---|
666 | |
---|
667 | if os.path.isfile(path): |
---|
668 | basename = os.path.basename(path) |
---|
669 | root, extension = os.path.splitext(basename) |
---|
670 | |
---|
671 | if extension.lower() in self.ext or \ |
---|
672 | extension.lower() == '.xml': |
---|
673 | tree = etree.parse(path, parser=etree.ETCompatXMLParser()) |
---|
674 | |
---|
675 | # Check the format version number |
---|
676 | # Specifying the namespace will take care of the file format version |
---|
677 | root = tree.getroot() |
---|
678 | |
---|
679 | entry_list = root.xpath('/ns:SASroot/ns:SASentry', namespaces={'ns': CANSAS_NS}) |
---|
680 | |
---|
681 | for entry in entry_list: |
---|
682 | |
---|
683 | sas_entry = self._parse_entry(entry) |
---|
684 | invstate = self._parse_state(entry) |
---|
685 | sas_entry.meta_data['invstate'] = invstate |
---|
686 | |
---|
687 | sas_entry.filename = invstate.file |
---|
688 | output.append(sas_entry) |
---|
689 | |
---|
690 | else: |
---|
691 | raise RuntimeError, "%s is not a file" % path |
---|
692 | |
---|
693 | # Return output consistent with the loader's api |
---|
694 | if len(output)==0: |
---|
695 | return None |
---|
696 | elif len(output)==1: |
---|
697 | # Call back to post the new state |
---|
698 | |
---|
699 | self.call_back(state=output[0].meta_data['invstate'], datainfo = output[0]) |
---|
700 | return output[0] |
---|
701 | else: |
---|
702 | return output |
---|
703 | |
---|
704 | |
---|
705 | def write(self, filename, datainfo=None, invstate=None): |
---|
706 | """ |
---|
707 | Write the content of a Data1D as a CanSAS XML file |
---|
708 | |
---|
709 | : param filename: name of the file to write |
---|
710 | : param datainfo: Data1D object |
---|
711 | : param invstate: InvariantState object |
---|
712 | """ |
---|
713 | |
---|
714 | # Sanity check |
---|
715 | if self.cansas == True: |
---|
716 | if datainfo is None: |
---|
717 | datainfo = DataLoader.data_info.Data1D(x=[], y=[]) |
---|
718 | elif not issubclass(datainfo.__class__, DataLoader.data_info.Data1D): |
---|
719 | raise RuntimeError, "The cansas writer expects a Data1D instance: %s" % str(datainfo.__class__.__name__) |
---|
720 | |
---|
721 | # Create basic XML document |
---|
722 | doc, sasentry = self._to_xml_doc(datainfo) |
---|
723 | |
---|
724 | # Add the invariant information to the XML document |
---|
725 | if invstate is not None: |
---|
726 | invstate.toXML(doc=doc, entry_node=sasentry) |
---|
727 | |
---|
728 | # Write the XML document |
---|
729 | fd = open(filename, 'w') |
---|
730 | fd.write(doc.toprettyxml()) |
---|
731 | fd.close() |
---|
732 | else: |
---|
733 | invstate.toXML(file=filename) |
---|
734 | |
---|
735 | |
---|
736 | |
---|