1 | #!/usr/bin/env python2
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2 | """Flag parser defintions."""
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3 |
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4 | from __future__ import print_function
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5 |
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6 | from frontend import args
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7 | from frontend.flag_spec import (FlagSpec, FlagSpecAndMore, _FlagSpecAndMore)
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8 | from frontend import option_def
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9 |
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10 | #
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11 | # Definitions for builtin_assign
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12 | #
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13 |
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14 | EXPORT_SPEC = FlagSpec('export_')
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15 | EXPORT_SPEC.ShortFlag('-n')
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16 | EXPORT_SPEC.ShortFlag('-f') # stubbed
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17 | EXPORT_SPEC.ShortFlag('-p')
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18 |
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19 | READONLY_SPEC = FlagSpec('readonly')
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20 |
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21 | # TODO: Check the consistency of -a and -A against values, here and below.
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22 | READONLY_SPEC.ShortFlag('-a')
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23 | READONLY_SPEC.ShortFlag('-A')
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24 | READONLY_SPEC.ShortFlag('-p')
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25 |
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26 | NEW_VAR_SPEC = FlagSpec('new_var')
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27 |
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28 | # print stuff
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29 | NEW_VAR_SPEC.ShortFlag('-f')
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30 | NEW_VAR_SPEC.ShortFlag('-F')
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31 | NEW_VAR_SPEC.ShortFlag('-p')
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32 |
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33 | NEW_VAR_SPEC.ShortFlag('-g') # Look up in global scope
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34 |
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35 | # Options +r +x +n
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36 | NEW_VAR_SPEC.PlusFlag('x') # export
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37 | NEW_VAR_SPEC.PlusFlag('r') # readonly
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38 | NEW_VAR_SPEC.PlusFlag('n') # named ref
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39 |
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40 | # Common between readonly/declare
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41 | NEW_VAR_SPEC.ShortFlag('-a')
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42 | NEW_VAR_SPEC.ShortFlag('-A')
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43 | NEW_VAR_SPEC.ShortFlag('-i') # no-op for integers
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44 |
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45 | UNSET_SPEC = FlagSpec('unset')
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46 | UNSET_SPEC.ShortFlag('-v')
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47 | UNSET_SPEC.ShortFlag('-f')
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48 | #UNSET_SPEC.ShortFlag('-z', args.String)
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49 |
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50 | #
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51 | # Definitions for builtin_meta
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52 | #
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53 |
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54 | # Unused because there are no flags! Just --.
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55 | EVAL_SPEC = FlagSpec('eval')
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56 | SOURCE_SPEC = FlagSpec('source')
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57 | SOURCE_SPEC.LongFlag('--builtin')
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58 |
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59 | COMMAND_SPEC = FlagSpec('command')
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60 | COMMAND_SPEC.ShortFlag('-v')
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61 | COMMAND_SPEC.ShortFlag('-V')
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62 | COMMAND_SPEC.ShortFlag('-p')
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63 |
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64 | TYPE_SPEC = FlagSpec('type')
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65 | TYPE_SPEC.ShortFlag('-f')
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66 | TYPE_SPEC.ShortFlag('-t')
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67 | TYPE_SPEC.ShortFlag('-p')
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68 | TYPE_SPEC.ShortFlag('-P')
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69 | TYPE_SPEC.ShortFlag('-a')
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70 |
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71 | #
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72 | # Definitions for builtin_pure
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73 | #
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74 |
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75 | ALIAS_SPEC = FlagSpec('alias') # no flags yet
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76 | UNALIAS_SPEC = FlagSpec('unalias') # no flags yet
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77 | UNALIAS_SPEC.ShortFlag('-a')
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78 |
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79 | SHOPT_SPEC = FlagSpec('shopt')
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80 | SHOPT_SPEC.ShortFlag('-s', long_name='--set')
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81 | SHOPT_SPEC.ShortFlag('-u', long_name='--unset')
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82 | SHOPT_SPEC.ShortFlag('-o') # use 'set -o' names
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83 | # TODO: --print could print in a verbose format. (Annoying: codegen conflicts
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84 | # with Python keyword.)
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85 | SHOPT_SPEC.ShortFlag('-p')
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86 | SHOPT_SPEC.ShortFlag('-q') # query option settings
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87 |
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88 | HASH_SPEC = FlagSpec('hash')
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89 | HASH_SPEC.ShortFlag('-r')
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90 |
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91 | ECHO_SPEC = FlagSpec('echo')
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92 | ECHO_SPEC.ShortFlag('-e') # no backslash escapes
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93 | ECHO_SPEC.ShortFlag('-n')
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94 |
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95 | #
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96 | # osh/builtin_printf.py
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97 | #
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98 |
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99 | PRINTF_SPEC = FlagSpec('printf')
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100 | PRINTF_SPEC.ShortFlag('-v', args.String)
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101 |
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102 | #
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103 | # osh/builtin_misc.py
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104 | #
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105 |
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106 | READ_SPEC = FlagSpec('read')
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107 | READ_SPEC.ShortFlag('-r')
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108 | READ_SPEC.ShortFlag('-s') # silent
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109 | READ_SPEC.ShortFlag('-u', args.Int) # file descriptor
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110 | READ_SPEC.ShortFlag('-t', args.Float) # timeout
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111 | READ_SPEC.ShortFlag('-n', args.Int)
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112 | READ_SPEC.ShortFlag('-N', args.Int)
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113 | READ_SPEC.ShortFlag('-a', args.String) # name of array to read into
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114 | READ_SPEC.ShortFlag('-d', args.String)
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115 | READ_SPEC.ShortFlag('-p', args.String) # prompt
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116 |
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117 | # YSH extensions
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118 | READ_SPEC.ShortFlag('-0') # until NUL, like -r -d ''
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119 | READ_SPEC.LongFlag('--all')
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120 |
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121 | # Why not have --j8-line, a shortcut for fromJ8Line()?
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122 | # Because buffered vs. unbuffered should be ORTHOGONAL to encoding
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123 | # TODO: my-j8-read should be possible
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124 |
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125 | READ_SPEC.LongFlag('--raw-line')
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126 | READ_SPEC.LongFlag('--num-bytes', args.Int)
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127 | # don't strip the trailing newline
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128 | READ_SPEC.LongFlag('--with-eol')
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129 |
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130 | MAPFILE_SPEC = FlagSpec('mapfile')
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131 | MAPFILE_SPEC.ShortFlag('-t')
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132 |
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133 | CD_SPEC = FlagSpec('cd')
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134 | CD_SPEC.ShortFlag('-L')
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135 | CD_SPEC.ShortFlag('-P')
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136 |
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137 | PUSHD_SPEC = FlagSpec('pushd')
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138 |
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139 | POPD_SPEC = FlagSpec('popd')
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140 |
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141 | DIRS_SPEC = FlagSpec('dirs')
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142 | DIRS_SPEC.ShortFlag('-c')
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143 | DIRS_SPEC.ShortFlag('-l')
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144 | DIRS_SPEC.ShortFlag('-p')
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145 | DIRS_SPEC.ShortFlag('-v')
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146 |
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147 | PWD_SPEC = FlagSpec('pwd')
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148 | PWD_SPEC.ShortFlag('-L')
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149 | PWD_SPEC.ShortFlag('-P')
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150 |
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151 | HELP_SPEC = FlagSpec('help')
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152 | #HELP_SPEC.ShortFlag('-i') # show index
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153 | # Note: bash has help -d -m -s, which change the formatting
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154 |
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155 | HISTORY_SPEC = FlagSpec('history')
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156 | HISTORY_SPEC.ShortFlag('-a')
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157 | HISTORY_SPEC.ShortFlag('-r')
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158 | HISTORY_SPEC.ShortFlag('-c')
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159 | HISTORY_SPEC.ShortFlag('-d', args.Int)
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160 |
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161 | #
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162 | # osh/builtin_process.py
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163 | #
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164 |
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165 | EXEC_SPEC = FlagSpec('exec')
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166 |
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167 | WAIT_SPEC = FlagSpec('wait')
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168 | WAIT_SPEC.ShortFlag('-n')
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169 |
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170 | TRAP_SPEC = FlagSpec('trap')
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171 | TRAP_SPEC.ShortFlag('-p')
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172 | TRAP_SPEC.ShortFlag('-l')
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173 |
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174 | JOB_SPEC = FlagSpec('jobs')
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175 | JOB_SPEC.ShortFlag('-l', help='long format')
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176 | JOB_SPEC.ShortFlag('-p', help='prints PID only')
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177 | JOB_SPEC.LongFlag('--debug', help='display debug info')
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178 |
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179 | ULIMIT_SPEC = FlagSpec('ulimit')
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180 |
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181 | ULIMIT_SPEC.ShortFlag('-a', help='Print all limits')
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182 | ULIMIT_SPEC.LongFlag('--all', help='Alias for -a')
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183 | ULIMIT_SPEC.ShortFlag('-H', help='Use hard limit')
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184 | ULIMIT_SPEC.ShortFlag('-S', help='Use soft limit')
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185 |
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186 | _ULIMIT_RESOURCES = [
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187 | '-c',
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188 | '-d',
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189 | '-f',
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190 | '-n',
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191 | '-s',
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192 | '-t',
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193 | '-v',
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194 | ]
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195 |
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196 | for u_flag in _ULIMIT_RESOURCES:
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197 | ULIMIT_SPEC.ShortFlag(u_flag)
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198 |
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199 | #
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200 | # FlagSpecAndMore
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201 | #
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202 |
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203 | #
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204 | # set and shopt
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205 | #
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206 |
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207 |
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208 | def _AddShellOptions(spec):
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209 | # type: (_FlagSpecAndMore) -> None
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210 | """Shared between 'set' builtin and the shell's own arg parser."""
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211 | spec.InitOptions()
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212 | spec.InitShopt()
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213 |
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214 | for opt in option_def.All():
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215 | if opt.builtin == 'set':
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216 | spec.Option(opt.short_flag, opt.name)
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217 | # Notes:
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218 | # - shopt option don't need to be registered; we validate elsewhere
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219 | # - 'interactive' Has a cell for internal use, but isn't allowed to be
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220 | # modified.
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221 |
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222 |
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223 | MAIN_SPEC = FlagSpecAndMore('main')
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224 |
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225 | MAIN_SPEC.ShortFlag('-c', args.String,
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226 | quit_parsing_flags=True) # command string
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227 | MAIN_SPEC.LongFlag('--help')
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228 | MAIN_SPEC.LongFlag('--version')
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229 |
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230 | # --tool ysh-ify, etc.
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231 | # default is ''
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232 | #
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233 | # More ideas for tools
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234 | # undefined-vars - a static analysis pass
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235 | # parse-glob - to debug parsing
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236 | # parse-printf
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237 | MAIN_SPEC.LongFlag('--tool', [
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238 | 'tokens', 'lossless-cat', 'syntax-tree', 'fmt', 'test', 'ysh-ify', 'deps',
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239 | 'cat-em'
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240 | ])
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241 |
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242 | MAIN_SPEC.ShortFlag('-i') # interactive
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243 | MAIN_SPEC.ShortFlag('-l') # login - currently no-op
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244 | MAIN_SPEC.LongFlag('--login') # login - currently no-op
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245 | MAIN_SPEC.LongFlag('--headless') # accepts ECMD, etc.
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246 |
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247 | # TODO: -h too
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248 | # the output format when passing -n
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249 | MAIN_SPEC.LongFlag(
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250 | '--ast-format',
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251 | ['text', 'abbrev-text', 'html', 'abbrev-html', 'oheap', 'none'],
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252 | default='abbrev-text')
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253 |
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254 | # Defines completion style.
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255 | MAIN_SPEC.LongFlag('--completion-display', ['minimal', 'nice'], default='nice')
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256 | # TODO: Add option for YSH prompt style? RHS prompt?
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257 |
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258 | MAIN_SPEC.LongFlag('--completion-demo')
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259 |
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260 | # Debugging feature only. $SH -n won't reparse a[x+1] and ``. Note that $SH
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261 | # --tool automatically turns it on.
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262 | MAIN_SPEC.LongFlag('--do-lossless')
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263 |
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264 | MAIN_SPEC.LongFlag('--print-status') # TODO: Replace with a shell hook
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265 | MAIN_SPEC.LongFlag('--debug-file', args.String)
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266 | MAIN_SPEC.LongFlag('--xtrace-to-debug-file')
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267 |
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268 | # This flag has is named like bash's equivalent. We got rid of --norc because
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269 | # it can simply by --rcfile /dev/null.
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270 | MAIN_SPEC.LongFlag('--rcfile', args.String)
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271 | MAIN_SPEC.LongFlag('--rcdir', args.String)
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272 | MAIN_SPEC.LongFlag('--norc')
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273 |
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274 | # e.g. to pass data on stdin but pretend that it came from a .hay file
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275 | MAIN_SPEC.LongFlag('--location-str', args.String)
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276 | MAIN_SPEC.LongFlag('--location-start-line', args.Int)
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277 |
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278 | _AddShellOptions(MAIN_SPEC)
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279 |
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280 | SET_SPEC = FlagSpecAndMore('set')
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281 | _AddShellOptions(SET_SPEC)
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282 |
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283 | #
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284 | # Types for completion
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285 | #
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286 |
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287 |
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288 | def _DefineCompletionFlags(spec):
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289 | # type: (_FlagSpecAndMore) -> None
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290 | spec.ShortFlag('-F', args.String, help='Complete with this function')
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291 | spec.ShortFlag('-W', args.String, help='Complete with these words')
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292 | spec.ShortFlag('-C',
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293 | args.String,
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294 | help='Complete with stdout lines of this command')
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295 |
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296 | spec.ShortFlag(
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297 | '-P',
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298 | args.String,
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299 | help=
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300 | 'Prefix is added at the beginning of each possible completion after '
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301 | 'all other options have been applied.')
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302 | spec.ShortFlag('-S',
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303 | args.String,
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304 | help='Suffix is appended to each possible completion after '
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305 | 'all other options have been applied.')
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306 | spec.ShortFlag('-X',
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307 | args.String,
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308 | help='''
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309 | A glob pattern to further filter the matches. It is applied to the list of
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310 | possible completions generated by the preceding options and arguments, and each
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311 | completion matching filterpat is removed from the list. A leading ! in
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312 | filterpat negates the pattern; in this case, any completion not matching
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313 | filterpat is removed.
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314 | ''')
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315 |
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316 |
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317 | def _DefineCompletionOptions(spec):
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318 | # type: (_FlagSpecAndMore) -> None
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319 | """Common -o options for complete and compgen."""
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320 | spec.InitOptions()
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321 |
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322 | # bashdefault, default, filenames, nospace are used in git
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323 | spec.Option2('bashdefault',
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324 | help='If nothing matches, perform default bash completions')
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325 | spec.Option2(
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326 | 'default',
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327 | help="If nothing matches, use readline's default filename completion")
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328 | spec.Option2(
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329 | 'filenames',
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330 | help="The completion function generates filenames and should be "
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331 | "post-processed")
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332 | spec.Option2('dirnames',
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333 | help="If nothing matches, perform directory name completion")
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334 | spec.Option2(
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335 | 'nospace',
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336 | help="Don't append a space to words completed at the end of the line")
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337 | spec.Option2(
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338 | 'plusdirs',
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339 | help="After processing the compspec, attempt directory name completion "
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340 | "and return those matches.")
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341 |
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342 |
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343 | def _DefineCompletionActions(spec):
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344 | # type: (_FlagSpecAndMore) -> None
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345 | """Common -A actions for complete and compgen."""
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346 |
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347 | # NOTE: git-completion.bash uses -f and -v.
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348 | # My ~/.bashrc on Ubuntu uses -d, -u, -j, -v, -a, -c, -b
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349 | spec.InitActions()
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350 | spec.Action('a', 'alias')
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351 | spec.Action('b', 'binding')
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352 | spec.Action('c', 'command')
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353 | spec.Action('d', 'directory')
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354 | spec.Action('e', 'export')
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355 | spec.Action('f', 'file')
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356 | spec.Action('k', 'keyword')
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357 | spec.Action('j', 'job')
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358 | spec.Action('u', 'user')
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359 | spec.Action('v', 'variable')
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360 | spec.Action(None, 'builtin')
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361 | spec.Action(None, 'function')
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362 | spec.Action(None, 'helptopic') # help
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363 | spec.Action(None, 'setopt') # set -o
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364 | spec.Action(None, 'shopt') # shopt -s
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365 | spec.Action(None, 'signal') # kill -s
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366 | spec.Action(None, 'stopped')
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367 |
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368 |
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369 | COMPLETE_SPEC = FlagSpecAndMore('complete')
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370 |
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371 | _DefineCompletionFlags(COMPLETE_SPEC)
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372 | _DefineCompletionOptions(COMPLETE_SPEC)
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373 | _DefineCompletionActions(COMPLETE_SPEC)
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374 |
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375 | COMPLETE_SPEC.ShortFlag('-E', help='Define the compspec for an empty line')
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376 | COMPLETE_SPEC.ShortFlag(
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377 | '-D', help='Define the compspec that applies when nothing else matches')
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378 |
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379 | # I would like this to be less compatible
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380 | # Field name conflicts with 'print' keyword
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381 | #COMPLETE_SPEC.LongFlag(
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382 | # '--print', help='Print spec')
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383 |
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384 | COMPGEN_SPEC = FlagSpecAndMore('compgen') # for -o and -A
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385 |
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386 | # TODO: Add -l for COMP_LINE. -p for COMP_POINT ?
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387 | _DefineCompletionFlags(COMPGEN_SPEC)
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388 | _DefineCompletionOptions(COMPGEN_SPEC)
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389 | _DefineCompletionActions(COMPGEN_SPEC)
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390 |
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391 | COMPOPT_SPEC = FlagSpecAndMore('compopt') # for -o
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392 | _DefineCompletionOptions(COMPOPT_SPEC)
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393 |
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394 | COMPADJUST_SPEC = FlagSpecAndMore('compadjust')
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395 |
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396 | COMPADJUST_SPEC.ShortFlag(
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397 | '-n',
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398 | args.String,
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399 | help=
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400 | 'Do NOT split by these characters. It omits them from COMP_WORDBREAKS.')
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401 | COMPADJUST_SPEC.ShortFlag('-s',
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402 | help='Treat --foo=bar and --foo bar the same way.')
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403 |
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404 | COMPEXPORT_SPEC = FlagSpecAndMore('compexport')
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405 |
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406 | COMPEXPORT_SPEC.ShortFlag('-c',
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407 | args.String,
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408 | help='Shell string to complete, like sh -c')
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409 |
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410 | COMPEXPORT_SPEC.LongFlag('--begin',
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411 | args.Int,
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412 | help='Simulate readline begin index into line buffer')
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413 |
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414 | COMPEXPORT_SPEC.LongFlag('--end',
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415 | args.Int,
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416 | help='Simulate readline end index into line buffer')
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417 |
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418 | # jlines is an array of strings with NO header line
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419 | # TSV8 has a header line. It can have flag descriptions and other data.
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420 | COMPEXPORT_SPEC.LongFlag('--format', ['jlines', 'tsv8'],
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421 | default='jlines',
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422 | help='Output format')
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423 |
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424 | #
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425 | # Pure YSH
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426 | #
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427 |
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428 | TRY_SPEC = FlagSpec('try_')
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429 | TRY_SPEC.LongFlag('--assign',
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430 | args.String,
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431 | help='Assign status to this variable, and return 0')
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432 |
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433 | ERROR_SPEC = FlagSpec('error')
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434 | FAILED_SPEC = FlagSpec('failed')
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435 |
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436 | BOOLSTATUS_SPEC = FlagSpec('boolstatus')
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437 |
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438 | # Future directions:
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439 | # run --builtin, run --command, run --proc:
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440 | # to "replace" 'builtin' and # 'command'
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441 |
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442 | APPEND_SPEC = FlagSpec('append')
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443 |
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444 | SHVAR_SPEC = FlagSpec('shvar')
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445 | #SHVAR_SPEC.Flag('-temp', args.String,
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446 | # help='Push a NAME=val binding')
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447 | #SHVAR_SPEC.Flag('-env', args.String,
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448 | # help='Push a NAME=val binding and set the -x flag')
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449 |
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450 | CTX_SPEC = FlagSpec('ctx')
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451 |
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452 | PP_SPEC = FlagSpec('pp')
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453 |
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454 | SHVM_SPEC = FlagSpec('shvm')
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455 |
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456 | # --verbose?
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457 | FORK_SPEC = FlagSpec('fork')
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458 | FORKWAIT_SPEC = FlagSpec('forkwait')
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459 |
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460 | # Might want --list at some point
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461 | MODULE_SPEC = FlagSpec('module')
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462 |
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463 | RUNPROC_SPEC = FlagSpec('runproc')
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464 | RUNPROC_SPEC.ShortFlag('-h', args.Bool, help='Show all procs')
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465 |
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466 | WRITE_SPEC = FlagSpec('write')
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467 | WRITE_SPEC.LongFlag('--sep',
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468 | args.String,
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469 | default='\n',
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470 | help='Characters to separate each argument')
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471 | WRITE_SPEC.LongFlag('--end',
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472 | args.String,
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473 | default='\n',
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474 | help='Characters to terminate the whole invocation')
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475 | WRITE_SPEC.ShortFlag('-n',
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476 | args.Bool,
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477 | help="Omit newline (synonym for -end '')")
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478 | # Do we need these two?
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479 | WRITE_SPEC.LongFlag('--json',
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480 | args.Bool,
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481 | default=False,
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482 | help='Write elements as JSON strings(lossy)')
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483 | WRITE_SPEC.LongFlag('--j8',
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484 | args.Bool,
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485 | default=False,
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486 | help='Write elements as J8 strings')
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487 | # TODO: --jlines for conditional j"" prefix? Like maybe_shell_encode()
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488 |
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489 | # Legacy that's not really needed with J8 notation. The = operator might use a
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490 | # separate pretty printer that shows \u{3bc}
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491 | #
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492 | # x means I want \x00
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493 | # u means I want \u{1234}
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494 | # raw is utf-8
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495 | if 0:
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496 | WRITE_SPEC.LongFlag(
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497 | '--unicode', ['raw', 'u', 'x'],
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498 | default='raw',
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499 | help='Encode QSN with these options. '
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500 | 'x assumes an opaque byte string, while raw and u try to '
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501 | 'decode UTF-8.')
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502 |
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503 | PUSH_REGISTERS_SPEC = FlagSpec('push-registers')
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504 |
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505 | FOPEN_SPEC = FlagSpec('fopen')
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506 |
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507 | #
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508 | # JSON
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509 | #
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510 |
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511 | JSON_WRITE_SPEC = FlagSpec('json_write')
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512 |
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513 | # TODO: --compact is probably better
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514 | # --pretty=F is like JSON.stringify(d, null, 0)
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515 | JSON_WRITE_SPEC.LongFlag('--pretty',
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516 | args.Bool,
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517 | default=True,
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518 | help='Whitespace in output (default true)')
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519 |
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520 | # Unused:
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521 | # JSON has the questionable decision of allowing (unpaired) surrogate like
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522 | # \udc00.
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523 | # When encoding, we try to catch the error on OUR side, rather than letting it
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524 | # travel over the wire. But you can disable this.
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525 | JSON_WRITE_SPEC.LongFlag(
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526 | '--surrogate-ok',
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527 | args.Bool,
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528 | default=False,
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529 | help='Invalid UTF-8 can be encoded as surrogate like \\udc00')
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530 |
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531 | JSON_WRITE_SPEC.LongFlag('--indent',
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532 | args.Int,
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533 | default=2,
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534 | help='Indent JSON by this amount')
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535 |
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536 | JSON_READ_SPEC = FlagSpec('json_read')
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