1 | # |
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2 | # RTEMS Tools Project (http://www.rtems.org/) |
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3 | # Copyright 2010-2016 Chris Johns (chrisj@rtems.org) |
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4 | # All rights reserved. |
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5 | # |
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6 | # This file is part of the RTEMS Tools package in 'rtems-tools'. |
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7 | # |
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8 | # Redistribution and use in source and binary forms, with or without |
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9 | # modification, are permitted provided that the following conditions are met: |
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10 | # |
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11 | # 1. Redistributions of source code must retain the above copyright notice, |
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12 | # this list of conditions and the following disclaimer. |
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13 | # |
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14 | # 2. Redistributions in binary form must reproduce the above copyright notice, |
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15 | # this list of conditions and the following disclaimer in the documentation |
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16 | # and/or other materials provided with the distribution. |
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17 | # |
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18 | # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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19 | # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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20 | # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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21 | # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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22 | # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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23 | # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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24 | # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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25 | # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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26 | # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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27 | # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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28 | # POSSIBILITY OF SUCH DAMAGE. |
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29 | # |
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30 | |
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31 | # |
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32 | # Macro tables. |
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33 | # |
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34 | |
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35 | from __future__ import print_function |
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36 | |
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37 | import copy |
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38 | import inspect |
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39 | import re |
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40 | import os |
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41 | import string |
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42 | |
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43 | # |
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44 | # Support to handle use in a package and as a unit test. |
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45 | # If there is a better way to let us know. |
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46 | # |
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47 | try: |
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48 | from . import error |
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49 | from . import log |
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50 | from . import path |
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51 | except (ValueError, SystemError): |
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52 | import error |
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53 | import log |
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54 | import path |
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55 | |
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56 | # |
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57 | # Macro tables |
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58 | # |
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59 | class macros: |
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60 | |
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61 | class macro_iterator: |
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62 | def __init__(self, keys): |
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63 | self.keys = keys |
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64 | self.index = 0 |
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65 | |
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66 | def __iter__(self): |
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67 | return self |
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68 | |
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69 | def __next__(self): |
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70 | if self.index < len(self.keys): |
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71 | key = self.keys[self.index] |
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72 | self.index += 1 |
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73 | return key |
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74 | raise StopIteration |
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75 | |
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76 | def iterkeys(self): |
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77 | return self.keys |
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78 | |
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79 | def _unicode_to_str(self, us): |
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80 | try: |
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81 | if type(us) == unicode: |
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82 | return us.encode('ascii', 'replace') |
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83 | except: |
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84 | pass |
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85 | try: |
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86 | if type(us) == bytes: |
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87 | return us.encode('ascii', 'replace') |
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88 | except: |
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89 | pass |
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90 | return us |
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91 | |
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92 | def __init__(self, name = None, original = None, rtdir = '.'): |
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93 | self.files = [] |
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94 | self.macro_filter = re.compile(r'%{[^}]+}') |
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95 | if original is None: |
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96 | self.macros = {} |
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97 | self.read_maps = [] |
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98 | self.read_map_locked = False |
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99 | self.write_map = 'global' |
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100 | self.rtpath = path.abspath(path.dirname(inspect.getfile(macros))) |
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101 | if path.dirname(self.rtpath).endswith('/share/rtems'): |
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102 | self.prefix = path.dirname(self.rtpath)[:-len('/share/rtems')] |
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103 | else: |
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104 | self.prefix = '.' |
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105 | self.macros['global'] = {} |
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106 | self.macros['global']['nil'] = ('none', 'none', '') |
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107 | self.macros['global']['_cwd'] = ('dir', |
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108 | 'required', |
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109 | path.abspath(os.getcwd())) |
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110 | self.macros['global']['_prefix'] = ('dir', 'required', self.prefix) |
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111 | self.macros['global']['_rtdir'] = ('dir', |
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112 | 'required', |
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113 | path.abspath(self.expand(rtdir))) |
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114 | self.macros['global']['_rttop'] = ('dir', 'required', self.prefix) |
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115 | else: |
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116 | self.macros = {} |
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117 | for m in original.macros: |
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118 | if m not in self.macros: |
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119 | self.macros[m] = {} |
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120 | for k in original.macros[m]: |
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121 | self.macros[m][k] = copy.copy(original.macros[m][k]) |
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122 | self.read_maps = sorted(copy.copy(original.read_maps)) |
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123 | self.read_map_locked = copy.copy(original.read_map_locked) |
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124 | self.write_map = copy.copy(original.write_map) |
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125 | if name is not None: |
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126 | self.load(name) |
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127 | |
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128 | def __copy__(self): |
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129 | return macros(original = self) |
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130 | |
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131 | def __str__(self): |
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132 | text_len = 80 |
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133 | text = '' |
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134 | for f in self.files: |
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135 | text += '> %s%s' % (f, os.linesep) |
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136 | for map in self.macros: |
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137 | if map in self.read_maps: |
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138 | if self.read_map_locked: |
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139 | rm = 'R' |
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140 | else: |
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141 | rm = 'r' |
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142 | else: |
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143 | rm = '-' |
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144 | if map == self.write_map: |
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145 | wm = 'w' |
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146 | else: |
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147 | wm = '-' |
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148 | text += '[%s] %s%s%s' % (map, rm, wm, os.linesep) |
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149 | for k in sorted(self.macros[map].keys()): |
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150 | d = self.macros[map][k] |
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151 | text += " %s:%s '%s'%s '%s'%s" % \ |
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152 | (k, ' ' * (20 - len(k)), |
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153 | d[0], ' ' * (8 - len(d[0])), |
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154 | d[1], ' ' * (10 - len(d[1]))) |
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155 | if len(d[2]) == 0: |
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156 | text += "''%s" % (os.linesep) |
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157 | else: |
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158 | if '\n' in d[2]: |
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159 | text += "'''" |
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160 | else: |
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161 | text += "'" |
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162 | indent = False |
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163 | ds = d[2].split('\n') |
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164 | lc = 0 |
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165 | for l in ds: |
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166 | lc += 1 |
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167 | while len(l): |
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168 | if indent: |
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169 | text += ' %21s %10s %12s' % (' ', ' ', ' ') |
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170 | text += l[0:text_len] |
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171 | l = l[text_len:] |
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172 | if len(l): |
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173 | text += ' \\' |
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174 | elif lc == len(ds): |
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175 | if len(ds) > 1: |
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176 | text += "'''" |
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177 | else: |
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178 | text += "'" |
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179 | text += '%s' % (os.linesep) |
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180 | indent = True |
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181 | return text |
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182 | |
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183 | def __iter__(self): |
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184 | return macros.macro_iterator(self.keys()) |
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185 | |
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186 | def __getitem__(self, key): |
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187 | macro = self.get(key) |
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188 | if macro is None or macro[1] == 'undefine': |
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189 | raise IndexError('key: %s' % (key)) |
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190 | return macro[2] |
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191 | |
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192 | def __setitem__(self, key, value): |
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193 | key = self._unicode_to_str(key) |
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194 | if type(key) is not str: |
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195 | raise TypeError('bad key type (want str): %s' % (type(key))) |
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196 | if type(value) is not tuple: |
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197 | value = self._unicode_to_str(value) |
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198 | if type(value) is str: |
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199 | value = ('none', 'none', value) |
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200 | if type(value) is not tuple: |
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201 | raise TypeError('bad value type (want tuple): %s' % (type(value))) |
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202 | if len(value) != 3: |
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203 | raise TypeError('bad value tuple (len not 3): %d' % (len(value))) |
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204 | value = (self._unicode_to_str(value[0]), |
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205 | self._unicode_to_str(value[1]), |
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206 | self._unicode_to_str(value[2])) |
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207 | if type(value[0]) is not str: |
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208 | raise TypeError('bad value tuple type field: %s' % (type(value[0]))) |
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209 | if type(value[1]) is not str: |
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210 | raise TypeError('bad value tuple attrib field: %s' % (type(value[1]))) |
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211 | if type(value[2]) is not str: |
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212 | raise TypeError('bad value tuple value field: %s' % (type(value[2]))) |
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213 | if value[0] not in ['none', 'triplet', 'dir', 'file', 'exe']: |
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214 | raise TypeError('bad value tuple (type field): %s' % (value[0])) |
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215 | if value[1] not in ['none', 'optional', 'required', |
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216 | 'override', 'undefine', 'convert']: |
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217 | raise TypeError('bad value tuple (attrib field): %s' % (value[1])) |
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218 | if value[1] == 'convert': |
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219 | value = self.expand(value) |
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220 | self.macros[self.write_map][self.key_filter(key)] = value |
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221 | |
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222 | def __delitem__(self, key): |
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223 | self.undefine(key) |
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224 | |
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225 | def __contains__(self, key): |
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226 | return self.has_key(key) |
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227 | |
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228 | def __len__(self): |
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229 | return len(list(self.keys())) |
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230 | |
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231 | def keys(self): |
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232 | keys = list(self.macros['global'].keys()) |
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233 | for rm in self.get_read_maps(): |
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234 | for mk in self.macros[rm]: |
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235 | if self.macros[rm][mk][1] == 'undefine': |
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236 | if mk in keys: |
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237 | keys.remove(mk) |
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238 | else: |
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239 | keys.append(mk) |
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240 | return sorted(set(keys)) |
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241 | |
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242 | def has_key(self, key): |
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243 | if type(key) is not str: |
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244 | raise TypeError('bad key type (want str): %s' % (type(key))) |
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245 | if self.key_filter(key) not in list(self.keys()): |
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246 | return False |
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247 | return True |
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248 | |
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249 | def maps(self): |
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250 | return self.macros.keys() |
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251 | |
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252 | def get_read_maps(self): |
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253 | return [rm[5:] for rm in self.read_maps] |
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254 | |
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255 | def key_filter(self, key): |
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256 | if key.startswith('%{') and key[-1] is '}': |
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257 | key = key[2:-1] |
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258 | return key.lower() |
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259 | |
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260 | def parse(self, lines): |
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261 | |
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262 | def _clean(l): |
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263 | if '#' in l: |
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264 | l = l[:l.index('#')] |
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265 | if '\r' in l: |
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266 | l = l[:l.index('r')] |
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267 | if '\n' in l: |
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268 | l = l[:l.index('\n')] |
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269 | return l.strip() |
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270 | |
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271 | trace_me = False |
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272 | if trace_me: |
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273 | print('[[[[]]]] parsing macros') |
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274 | orig_macros = copy.copy(self.macros) |
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275 | map = 'global' |
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276 | lc = 0 |
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277 | state = 'key' |
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278 | token = '' |
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279 | macro = [] |
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280 | for l in lines: |
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281 | lc += 1 |
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282 | #print 'l:%s' % (l[:-1]) |
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283 | if len(l) == 0: |
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284 | continue |
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285 | l_remaining = l |
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286 | for c in l: |
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287 | if trace_me: |
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288 | print(']]]]]]]] c:%s(%d) s:%s t:"%s" m:%r M:%s' % \ |
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289 | (c, ord(c), state, token, macro, map)) |
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290 | l_remaining = l_remaining[1:] |
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291 | if c is '#' and not state.startswith('value'): |
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292 | break |
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293 | if c == '\n' or c == '\r': |
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294 | if not (state is 'key' and len(token) == 0) and \ |
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295 | not state.startswith('value-multiline'): |
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296 | self.macros = orig_macros |
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297 | raise error.general('malformed macro line:%d: %s' % (lc, l)) |
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298 | if state is 'key': |
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299 | if c not in string.whitespace: |
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300 | if c is '[': |
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301 | state = 'map' |
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302 | elif c is '%': |
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303 | state = 'directive' |
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304 | elif c is ':': |
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305 | macro += [token] |
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306 | token = '' |
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307 | state = 'attribs' |
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308 | elif c is '#': |
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309 | break |
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310 | else: |
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311 | token += c |
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312 | elif state is 'map': |
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313 | if c is ']': |
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314 | if token not in self.macros: |
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315 | self.macros[token] = {} |
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316 | map = token |
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317 | token = '' |
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318 | state = 'key' |
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319 | elif c in string.printable and c not in string.whitespace: |
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320 | token += c |
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321 | else: |
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322 | self.macros = orig_macros |
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323 | raise error.general('invalid macro map:%d: %s' % (lc, l)) |
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324 | elif state is 'directive': |
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325 | if c in string.whitespace: |
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326 | if token == 'include': |
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327 | self.load(_clean(l_remaining)) |
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328 | token = '' |
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329 | state = 'key' |
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330 | break |
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331 | elif c in string.printable and c not in string.whitespace: |
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332 | token += c |
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333 | else: |
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334 | self.macros = orig_macros |
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335 | raise error.general('invalid macro directive:%d: %s' % (lc, l)) |
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336 | elif state is 'include': |
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337 | if c is string.whitespace: |
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338 | if token == 'include': |
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339 | state = 'include' |
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340 | elif c in string.printable and c not in string.whitespace: |
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341 | token += c |
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342 | else: |
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343 | self.macros = orig_macros |
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344 | raise error.general('invalid macro directive:%d: %s' % (lc, l)) |
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345 | elif state is 'attribs': |
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346 | if c not in string.whitespace: |
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347 | if c is ',': |
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348 | macro += [token] |
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349 | token = '' |
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350 | if len(macro) == 3: |
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351 | state = 'value-start' |
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352 | else: |
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353 | token += c |
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354 | elif state is 'value-start': |
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355 | if c is "'": |
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356 | state = 'value-line-start' |
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357 | elif state is 'value-line-start': |
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358 | if c is "'": |
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359 | state = 'value-multiline-start' |
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360 | else: |
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361 | state = 'value-line' |
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362 | token += c |
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363 | elif state is 'value-multiline-start': |
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364 | if c is "'": |
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365 | state = 'value-multiline' |
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366 | else: |
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367 | macro += [token] |
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368 | state = 'macro' |
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369 | elif state is 'value-line': |
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370 | if c is "'": |
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371 | macro += [token] |
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372 | state = 'macro' |
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373 | else: |
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374 | token += c |
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375 | elif state is 'value-multiline': |
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376 | if c is "'": |
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377 | state = 'value-multiline-end' |
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378 | else: |
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379 | token += c |
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380 | elif state is 'value-multiline-end': |
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381 | if c is "'": |
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382 | state = 'value-multiline-end-end' |
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383 | else: |
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384 | state = 'value-multiline' |
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385 | token += "'" + c |
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386 | elif state is 'value-multiline-end-end': |
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387 | if c is "'": |
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388 | macro += [token] |
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389 | state = 'macro' |
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390 | else: |
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391 | state = 'value-multiline' |
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392 | token += "''" + c |
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393 | else: |
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394 | self.macros = orig_macros |
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395 | raise error.internal('bad state: %s' % (state)) |
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396 | if state is 'macro': |
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397 | self.macros[map][macro[0].lower()] = (macro[1], macro[2], macro[3]) |
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398 | macro = [] |
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399 | token = '' |
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400 | state = 'key' |
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401 | |
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402 | def load(self, name): |
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403 | names = self.expand(name).split(':') |
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404 | for n in names: |
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405 | log.trace('opening: %s' % (n)) |
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406 | if path.exists(n): |
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407 | try: |
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408 | mc = open(path.host(n), 'r') |
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409 | macros = self.parse(mc) |
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410 | mc.close() |
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411 | self.files += [n] |
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412 | return |
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413 | except IOError as err: |
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414 | pass |
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415 | raise error.general('opening macro file: %s' % \ |
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416 | (path.host(self.expand(name)))) |
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417 | |
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418 | def get(self, key): |
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419 | if type(key) is not str: |
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420 | raise TypeError('bad key type: %s' % (type(key))) |
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421 | key = self.key_filter(key) |
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422 | for rm in self.get_read_maps(): |
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423 | if key in self.macros[rm]: |
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424 | return self.macros[rm][key] |
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425 | if key in self.macros['global']: |
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426 | return self.macros['global'][key] |
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427 | return None |
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428 | |
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429 | def get_type(self, key): |
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430 | m = self.get(key) |
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431 | if m is None: |
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432 | return None |
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433 | return m[0] |
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434 | |
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435 | def get_attribute(self, key): |
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436 | m = self.get(key) |
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437 | if m is None: |
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438 | return None |
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439 | return m[1] |
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440 | |
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441 | def get_value(self, key): |
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442 | m = self.get(key) |
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443 | if m is None: |
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444 | return None |
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445 | return m[2] |
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446 | |
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447 | def overridden(self, key): |
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448 | return self.get_attribute(key) == 'override' |
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449 | |
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450 | def define(self, key, value = '1'): |
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451 | if type(key) is not str: |
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452 | raise TypeError('bad key type: %s' % (type(key))) |
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453 | self.__setitem__(key, ('none', 'none', value)) |
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454 | |
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455 | def undefine(self, key): |
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456 | if type(key) is not str: |
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457 | raise TypeError('bad key type: %s' % (type(key))) |
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458 | key = self.key_filter(key) |
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459 | for map in self.macros: |
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460 | if key in self.macros[map]: |
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461 | del self.macros[map][key] |
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462 | |
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463 | def expand(self, _str): |
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464 | """Simple basic expander of config file macros.""" |
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465 | start_str = _str |
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466 | expanded = True |
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467 | count = 0 |
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468 | while expanded: |
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469 | count += 1 |
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470 | if count > 1000: |
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471 | raise error.general('expansion looped over 1000 times "%s"' % |
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472 | (start_str)) |
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473 | expanded = False |
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474 | for m in self.macro_filter.findall(_str): |
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475 | name = m[2:-1] |
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476 | macro = self.get(name) |
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477 | if macro is None: |
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478 | raise error.general('cannot expand default macro: %s in "%s"' % |
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479 | (m, _str)) |
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480 | _str = _str.replace(m, macro[2]) |
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481 | expanded = True |
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482 | return _str |
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483 | |
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484 | def find(self, regex): |
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485 | what = re.compile(regex) |
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486 | keys = [] |
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487 | for key in self.keys(): |
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488 | if what.match(key): |
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489 | keys += [key] |
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490 | return keys |
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491 | |
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492 | def set_read_map(self, _map): |
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493 | if not self.read_map_locked: |
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494 | if _map in self.macros: |
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495 | if _map not in self.get_read_maps(): |
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496 | rm = '%04d_%s' % (len(self.read_maps), _map) |
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497 | self.read_maps = sorted(self.read_maps + [rm]) |
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498 | return True |
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499 | return False |
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500 | |
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501 | def unset_read_map(self, _map): |
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502 | if not self.read_map_locked: |
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503 | if _map in self.get_read_maps(): |
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504 | for i in range(0, len(self.read_maps)): |
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505 | if '%04d_%s' % (i, _map) == self.read_maps[i]: |
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506 | self.read_maps.pop(i) |
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507 | return True |
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508 | return False |
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509 | |
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510 | def set_write_map(self, map): |
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511 | if map in self.macros: |
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512 | self.write_map = map |
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513 | return True |
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514 | return False |
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515 | |
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516 | def lock_read_map(self): |
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517 | self.read_map_locked = True |
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518 | |
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519 | def unlock_read_map(self): |
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520 | self.read_map_locked = False |
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521 | |
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522 | if __name__ == "__main__": |
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523 | import copy |
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524 | import sys |
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525 | print(inspect.getfile(macros)) |
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526 | m = macros() |
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527 | d = copy.copy(m) |
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528 | m['test1'] = 'something' |
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529 | if d.has_key('test1'): |
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530 | print('error: copy failed.') |
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531 | sys.exit(1) |
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532 | m.parse("[test]\n" \ |
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533 | "test1: none, undefine, ''\n" \ |
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534 | "name: none, override, 'pink'\n") |
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535 | print('set test:', m.set_read_map('test')) |
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536 | if m['name'] != 'pink': |
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537 | print('error: override failed. name is %s' % (m['name'])) |
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538 | sys.exit(1) |
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539 | if m.has_key('test1'): |
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540 | print('error: map undefine failed.') |
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541 | sys.exit(1) |
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542 | print('unset test:', m.unset_read_map('test')) |
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543 | print(m) |
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544 | print(m.keys()) |
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