1 | # optparse.tcl -- |
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2 | # |
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3 | # (private) Option parsing package |
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4 | # Primarily used internally by the safe:: code. |
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5 | # |
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6 | # WARNING: This code will go away in a future release |
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7 | # of Tcl. It is NOT supported and you should not rely |
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8 | # on it. If your code does rely on this package you |
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9 | # may directly incorporate this code into your application. |
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10 | # |
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11 | # RCS: @(#) $Id: optparse.tcl,v 1.10 2003/09/10 20:27:30 dgp Exp $ |
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12 | |
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13 | package require Tcl 8.2 |
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14 | # When this version number changes, update the pkgIndex.tcl file |
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15 | # and the install directory in the Makefiles. |
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16 | package provide opt 0.4.5 |
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17 | |
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18 | namespace eval ::tcl { |
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19 | |
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20 | # Exported APIs |
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21 | namespace export OptKeyRegister OptKeyDelete OptKeyError OptKeyParse \ |
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22 | OptProc OptProcArgGiven OptParse \ |
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23 | Lempty Lget \ |
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24 | Lassign Lvarpop Lvarpop1 Lvarset Lvarincr \ |
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25 | SetMax SetMin |
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26 | |
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27 | |
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28 | ################# Example of use / 'user documentation' ################### |
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29 | |
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30 | proc OptCreateTestProc {} { |
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31 | |
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32 | # Defines ::tcl::OptParseTest as a test proc with parsed arguments |
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33 | # (can't be defined before the code below is loaded (before "OptProc")) |
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34 | |
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35 | # Every OptProc give usage information on "procname -help". |
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36 | # Try "tcl::OptParseTest -help" and "tcl::OptParseTest -a" and |
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37 | # then other arguments. |
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38 | # |
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39 | # example of 'valid' call: |
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40 | # ::tcl::OptParseTest save -4 -pr 23 -libsok SybTcl\ |
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41 | # -nostatics false ch1 |
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42 | OptProc OptParseTest { |
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43 | {subcommand -choice {save print} "sub command"} |
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44 | {arg1 3 "some number"} |
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45 | {-aflag} |
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46 | {-intflag 7} |
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47 | {-weirdflag "help string"} |
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48 | {-noStatics "Not ok to load static packages"} |
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49 | {-nestedloading1 true "OK to load into nested slaves"} |
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50 | {-nestedloading2 -boolean true "OK to load into nested slaves"} |
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51 | {-libsOK -choice {Tk SybTcl} |
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52 | "List of packages that can be loaded"} |
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53 | {-precision -int 12 "Number of digits of precision"} |
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54 | {-intval 7 "An integer"} |
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55 | {-scale -float 1.0 "Scale factor"} |
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56 | {-zoom 1.0 "Zoom factor"} |
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57 | {-arbitrary foobar "Arbitrary string"} |
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58 | {-random -string 12 "Random string"} |
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59 | {-listval -list {} "List value"} |
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60 | {-blahflag -blah abc "Funny type"} |
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61 | {arg2 -boolean "a boolean"} |
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62 | {arg3 -choice "ch1 ch2"} |
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63 | {?optarg? -list {} "optional argument"} |
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64 | } { |
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65 | foreach v [info locals] { |
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66 | puts stderr [format "%14s : %s" $v [set $v]] |
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67 | } |
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68 | } |
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69 | } |
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70 | |
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71 | ################### No User serviceable part below ! ############### |
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72 | |
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73 | # Array storing the parsed descriptions |
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74 | variable OptDesc; |
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75 | array set OptDesc {}; |
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76 | # Next potentially free key id (numeric) |
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77 | variable OptDescN 0; |
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78 | |
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79 | # Inside algorithm/mechanism description: |
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80 | # (not for the faint hearted ;-) |
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81 | # |
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82 | # The argument description is parsed into a "program tree" |
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83 | # It is called a "program" because it is the program used by |
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84 | # the state machine interpreter that use that program to |
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85 | # actually parse the arguments at run time. |
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86 | # |
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87 | # The general structure of a "program" is |
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88 | # notation (pseudo bnf like) |
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89 | # name :== definition defines "name" as being "definition" |
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90 | # { x y z } means list of x, y, and z |
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91 | # x* means x repeated 0 or more time |
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92 | # x+ means "x x*" |
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93 | # x? means optionally x |
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94 | # x | y means x or y |
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95 | # "cccc" means the literal string |
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96 | # |
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97 | # program :== { programCounter programStep* } |
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98 | # |
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99 | # programStep :== program | singleStep |
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100 | # |
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101 | # programCounter :== {"P" integer+ } |
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102 | # |
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103 | # singleStep :== { instruction parameters* } |
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104 | # |
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105 | # instruction :== single element list |
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106 | # |
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107 | # (the difference between singleStep and program is that \ |
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108 | # llength [lindex $program 0] >= 2 |
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109 | # while |
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110 | # llength [lindex $singleStep 0] == 1 |
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111 | # ) |
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112 | # |
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113 | # And for this application: |
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114 | # |
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115 | # singleStep :== { instruction varname {hasBeenSet currentValue} type |
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116 | # typeArgs help } |
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117 | # instruction :== "flags" | "value" |
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118 | # type :== knowType | anyword |
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119 | # knowType :== "string" | "int" | "boolean" | "boolflag" | "float" |
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120 | # | "choice" |
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121 | # |
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122 | # for type "choice" typeArgs is a list of possible choices, the first one |
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123 | # is the default value. for all other types the typeArgs is the default value |
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124 | # |
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125 | # a "boolflag" is the type for a flag whose presence or absence, without |
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126 | # additional arguments means respectively true or false (default flag type). |
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127 | # |
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128 | # programCounter is the index in the list of the currently processed |
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129 | # programStep (thus starting at 1 (0 is {"P" prgCounterValue}). |
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130 | # If it is a list it points toward each currently selected programStep. |
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131 | # (like for "flags", as they are optional, form a set and programStep). |
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132 | |
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133 | # Performance/Implementation issues |
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134 | # --------------------------------- |
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135 | # We use tcl lists instead of arrays because with tcl8.0 |
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136 | # they should start to be much faster. |
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137 | # But this code use a lot of helper procs (like Lvarset) |
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138 | # which are quite slow and would be helpfully optimized |
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139 | # for instance by being written in C. Also our struture |
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140 | # is complex and there is maybe some places where the |
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141 | # string rep might be calculated at great exense. to be checked. |
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142 | |
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143 | # |
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144 | # Parse a given description and saves it here under the given key |
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145 | # generate a unused keyid if not given |
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146 | # |
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147 | proc ::tcl::OptKeyRegister {desc {key ""}} { |
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148 | variable OptDesc; |
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149 | variable OptDescN; |
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150 | if {[string equal $key ""]} { |
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151 | # in case a key given to us as a parameter was a number |
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152 | while {[info exists OptDesc($OptDescN)]} {incr OptDescN} |
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153 | set key $OptDescN; |
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154 | incr OptDescN; |
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155 | } |
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156 | # program counter |
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157 | set program [list [list "P" 1]]; |
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158 | |
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159 | # are we processing flags (which makes a single program step) |
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160 | set inflags 0; |
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161 | |
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162 | set state {}; |
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163 | |
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164 | # flag used to detect that we just have a single (flags set) subprogram. |
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165 | set empty 1; |
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166 | |
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167 | foreach item $desc { |
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168 | if {$state == "args"} { |
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169 | # more items after 'args'... |
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170 | return -code error "'args' special argument must be the last one"; |
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171 | } |
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172 | set res [OptNormalizeOne $item]; |
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173 | set state [lindex $res 0]; |
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174 | if {$inflags} { |
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175 | if {$state == "flags"} { |
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176 | # add to 'subprogram' |
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177 | lappend flagsprg $res; |
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178 | } else { |
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179 | # put in the flags |
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180 | # structure for flag programs items is a list of |
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181 | # {subprgcounter {prg flag 1} {prg flag 2} {...}} |
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182 | lappend program $flagsprg; |
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183 | # put the other regular stuff |
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184 | lappend program $res; |
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185 | set inflags 0; |
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186 | set empty 0; |
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187 | } |
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188 | } else { |
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189 | if {$state == "flags"} { |
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190 | set inflags 1; |
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191 | # sub program counter + first sub program |
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192 | set flagsprg [list [list "P" 1] $res]; |
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193 | } else { |
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194 | lappend program $res; |
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195 | set empty 0; |
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196 | } |
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197 | } |
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198 | } |
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199 | if {$inflags} { |
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200 | if {$empty} { |
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201 | # We just have the subprogram, optimize and remove |
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202 | # unneeded level: |
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203 | set program $flagsprg; |
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204 | } else { |
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205 | lappend program $flagsprg; |
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206 | } |
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207 | } |
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208 | |
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209 | set OptDesc($key) $program; |
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210 | |
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211 | return $key; |
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212 | } |
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213 | |
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214 | # |
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215 | # Free the storage for that given key |
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216 | # |
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217 | proc ::tcl::OptKeyDelete {key} { |
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218 | variable OptDesc; |
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219 | unset OptDesc($key); |
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220 | } |
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221 | |
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222 | # Get the parsed description stored under the given key. |
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223 | proc OptKeyGetDesc {descKey} { |
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224 | variable OptDesc; |
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225 | if {![info exists OptDesc($descKey)]} { |
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226 | return -code error "Unknown option description key \"$descKey\""; |
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227 | } |
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228 | set OptDesc($descKey); |
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229 | } |
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230 | |
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231 | # Parse entry point for ppl who don't want to register with a key, |
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232 | # for instance because the description changes dynamically. |
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233 | # (otherwise one should really use OptKeyRegister once + OptKeyParse |
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234 | # as it is way faster or simply OptProc which does it all) |
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235 | # Assign a temporary key, call OptKeyParse and then free the storage |
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236 | proc ::tcl::OptParse {desc arglist} { |
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237 | set tempkey [OptKeyRegister $desc]; |
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238 | set ret [catch {uplevel 1 [list ::tcl::OptKeyParse $tempkey $arglist]} res]; |
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239 | OptKeyDelete $tempkey; |
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240 | return -code $ret $res; |
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241 | } |
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242 | |
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243 | # Helper function, replacement for proc that both |
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244 | # register the description under a key which is the name of the proc |
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245 | # (and thus unique to that code) |
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246 | # and add a first line to the code to call the OptKeyParse proc |
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247 | # Stores the list of variables that have been actually given by the user |
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248 | # (the other will be sets to their default value) |
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249 | # into local variable named "Args". |
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250 | proc ::tcl::OptProc {name desc body} { |
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251 | set namespace [uplevel 1 [list ::namespace current]]; |
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252 | if {[string match "::*" $name] || [string equal $namespace "::"]} { |
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253 | # absolute name or global namespace, name is the key |
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254 | set key $name; |
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255 | } else { |
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256 | # we are relative to some non top level namespace: |
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257 | set key "${namespace}::${name}"; |
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258 | } |
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259 | OptKeyRegister $desc $key; |
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260 | uplevel 1 [list ::proc $name args "set Args \[::tcl::OptKeyParse $key \$args\]\n$body"]; |
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261 | return $key; |
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262 | } |
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263 | # Check that a argument has been given |
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264 | # assumes that "OptProc" has been used as it will check in "Args" list |
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265 | proc ::tcl::OptProcArgGiven {argname} { |
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266 | upvar Args alist; |
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267 | expr {[lsearch $alist $argname] >=0} |
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268 | } |
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269 | |
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270 | ####### |
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271 | # Programs/Descriptions manipulation |
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272 | |
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273 | # Return the instruction word/list of a given step/(sub)program |
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274 | proc OptInstr {lst} { |
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275 | lindex $lst 0; |
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276 | } |
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277 | # Is a (sub) program or a plain instruction ? |
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278 | proc OptIsPrg {lst} { |
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279 | expr {[llength [OptInstr $lst]]>=2} |
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280 | } |
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281 | # Is this instruction a program counter or a real instr |
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282 | proc OptIsCounter {item} { |
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283 | expr {[lindex $item 0]=="P"} |
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284 | } |
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285 | # Current program counter (2nd word of first word) |
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286 | proc OptGetPrgCounter {lst} { |
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287 | Lget $lst {0 1} |
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288 | } |
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289 | # Current program counter (2nd word of first word) |
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290 | proc OptSetPrgCounter {lstName newValue} { |
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291 | upvar $lstName lst; |
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292 | set lst [lreplace $lst 0 0 [concat "P" $newValue]]; |
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293 | } |
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294 | # returns a list of currently selected items. |
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295 | proc OptSelection {lst} { |
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296 | set res {}; |
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297 | foreach idx [lrange [lindex $lst 0] 1 end] { |
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298 | lappend res [Lget $lst $idx]; |
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299 | } |
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300 | return $res; |
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301 | } |
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302 | |
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303 | # Advance to next description |
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304 | proc OptNextDesc {descName} { |
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305 | uplevel 1 [list Lvarincr $descName {0 1}]; |
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306 | } |
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307 | |
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308 | # Get the current description, eventually descend |
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309 | proc OptCurDesc {descriptions} { |
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310 | lindex $descriptions [OptGetPrgCounter $descriptions]; |
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311 | } |
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312 | # get the current description, eventually descend |
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313 | # through sub programs as needed. |
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314 | proc OptCurDescFinal {descriptions} { |
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315 | set item [OptCurDesc $descriptions]; |
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316 | # Descend untill we get the actual item and not a sub program |
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317 | while {[OptIsPrg $item]} { |
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318 | set item [OptCurDesc $item]; |
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319 | } |
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320 | return $item; |
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321 | } |
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322 | # Current final instruction adress |
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323 | proc OptCurAddr {descriptions {start {}}} { |
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324 | set adress [OptGetPrgCounter $descriptions]; |
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325 | lappend start $adress; |
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326 | set item [lindex $descriptions $adress]; |
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327 | if {[OptIsPrg $item]} { |
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328 | return [OptCurAddr $item $start]; |
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329 | } else { |
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330 | return $start; |
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331 | } |
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332 | } |
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333 | # Set the value field of the current instruction |
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334 | proc OptCurSetValue {descriptionsName value} { |
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335 | upvar $descriptionsName descriptions |
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336 | # get the current item full adress |
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337 | set adress [OptCurAddr $descriptions]; |
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338 | # use the 3th field of the item (see OptValue / OptNewInst) |
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339 | lappend adress 2 |
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340 | Lvarset descriptions $adress [list 1 $value]; |
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341 | # ^hasBeenSet flag |
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342 | } |
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343 | |
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344 | # empty state means done/paste the end of the program |
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345 | proc OptState {item} { |
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346 | lindex $item 0 |
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347 | } |
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348 | |
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349 | # current state |
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350 | proc OptCurState {descriptions} { |
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351 | OptState [OptCurDesc $descriptions]; |
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352 | } |
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353 | |
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354 | ####### |
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355 | # Arguments manipulation |
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356 | |
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357 | # Returns the argument that has to be processed now |
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358 | proc OptCurrentArg {lst} { |
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359 | lindex $lst 0; |
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360 | } |
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361 | # Advance to next argument |
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362 | proc OptNextArg {argsName} { |
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363 | uplevel 1 [list Lvarpop1 $argsName]; |
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364 | } |
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365 | ####### |
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366 | |
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367 | |
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368 | |
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369 | |
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370 | |
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371 | # Loop over all descriptions, calling OptDoOne which will |
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372 | # eventually eat all the arguments. |
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373 | proc OptDoAll {descriptionsName argumentsName} { |
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374 | upvar $descriptionsName descriptions |
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375 | upvar $argumentsName arguments; |
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376 | # puts "entered DoAll"; |
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377 | # Nb: the places where "state" can be set are tricky to figure |
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378 | # because DoOne sets the state to flagsValue and return -continue |
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379 | # when needed... |
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380 | set state [OptCurState $descriptions]; |
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381 | # We'll exit the loop in "OptDoOne" or when state is empty. |
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382 | while 1 { |
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383 | set curitem [OptCurDesc $descriptions]; |
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384 | # Do subprograms if needed, call ourselves on the sub branch |
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385 | while {[OptIsPrg $curitem]} { |
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386 | OptDoAll curitem arguments |
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387 | # puts "done DoAll sub"; |
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388 | # Insert back the results in current tree; |
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389 | Lvarset1nc descriptions [OptGetPrgCounter $descriptions]\ |
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390 | $curitem; |
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391 | OptNextDesc descriptions; |
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392 | set curitem [OptCurDesc $descriptions]; |
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393 | set state [OptCurState $descriptions]; |
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394 | } |
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395 | # puts "state = \"$state\" - arguments=($arguments)"; |
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396 | if {[Lempty $state]} { |
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397 | # Nothing left to do, we are done in this branch: |
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398 | break; |
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399 | } |
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400 | # The following statement can make us terminate/continue |
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401 | # as it use return -code {break, continue, return and error} |
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402 | # codes |
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403 | OptDoOne descriptions state arguments; |
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404 | # If we are here, no special return code where issued, |
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405 | # we'll step to next instruction : |
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406 | # puts "new state = \"$state\""; |
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407 | OptNextDesc descriptions; |
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408 | set state [OptCurState $descriptions]; |
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409 | } |
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410 | } |
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411 | |
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412 | # Process one step for the state machine, |
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413 | # eventually consuming the current argument. |
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414 | proc OptDoOne {descriptionsName stateName argumentsName} { |
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415 | upvar $argumentsName arguments; |
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416 | upvar $descriptionsName descriptions; |
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417 | upvar $stateName state; |
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418 | |
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419 | # the special state/instruction "args" eats all |
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420 | # the remaining args (if any) |
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421 | if {($state == "args")} { |
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422 | if {![Lempty $arguments]} { |
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423 | # If there is no additional arguments, leave the default value |
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424 | # in. |
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425 | OptCurSetValue descriptions $arguments; |
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426 | set arguments {}; |
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427 | } |
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428 | # puts "breaking out ('args' state: consuming every reminding args)" |
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429 | return -code break; |
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430 | } |
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431 | |
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432 | if {[Lempty $arguments]} { |
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433 | if {$state == "flags"} { |
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434 | # no argument and no flags : we're done |
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435 | # puts "returning to previous (sub)prg (no more args)"; |
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436 | return -code return; |
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437 | } elseif {$state == "optValue"} { |
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438 | set state next; # not used, for debug only |
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439 | # go to next state |
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440 | return ; |
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441 | } else { |
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442 | return -code error [OptMissingValue $descriptions]; |
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443 | } |
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444 | } else { |
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445 | set arg [OptCurrentArg $arguments]; |
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446 | } |
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447 | |
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448 | switch $state { |
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449 | flags { |
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450 | # A non-dash argument terminates the options, as does -- |
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451 | |
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452 | # Still a flag ? |
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453 | if {![OptIsFlag $arg]} { |
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454 | # don't consume the argument, return to previous prg |
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455 | return -code return; |
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456 | } |
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457 | # consume the flag |
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458 | OptNextArg arguments; |
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459 | if {[string equal "--" $arg]} { |
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460 | # return from 'flags' state |
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461 | return -code return; |
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462 | } |
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463 | |
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464 | set hits [OptHits descriptions $arg]; |
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465 | if {$hits > 1} { |
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466 | return -code error [OptAmbigous $descriptions $arg] |
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467 | } elseif {$hits == 0} { |
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468 | return -code error [OptFlagUsage $descriptions $arg] |
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469 | } |
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470 | set item [OptCurDesc $descriptions]; |
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471 | if {[OptNeedValue $item]} { |
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472 | # we need a value, next state is |
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473 | set state flagValue; |
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474 | } else { |
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475 | OptCurSetValue descriptions 1; |
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476 | } |
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477 | # continue |
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478 | return -code continue; |
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479 | } |
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480 | flagValue - |
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481 | value { |
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482 | set item [OptCurDesc $descriptions]; |
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483 | # Test the values against their required type |
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484 | if {[catch {OptCheckType $arg\ |
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485 | [OptType $item] [OptTypeArgs $item]} val]} { |
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486 | return -code error [OptBadValue $item $arg $val] |
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487 | } |
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488 | # consume the value |
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489 | OptNextArg arguments; |
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490 | # set the value |
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491 | OptCurSetValue descriptions $val; |
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492 | # go to next state |
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493 | if {$state == "flagValue"} { |
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494 | set state flags |
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495 | return -code continue; |
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496 | } else { |
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497 | set state next; # not used, for debug only |
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498 | return ; # will go on next step |
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499 | } |
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500 | } |
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501 | optValue { |
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502 | set item [OptCurDesc $descriptions]; |
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503 | # Test the values against their required type |
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504 | if {![catch {OptCheckType $arg\ |
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505 | [OptType $item] [OptTypeArgs $item]} val]} { |
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506 | # right type, so : |
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507 | # consume the value |
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508 | OptNextArg arguments; |
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509 | # set the value |
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510 | OptCurSetValue descriptions $val; |
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511 | } |
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512 | # go to next state |
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513 | set state next; # not used, for debug only |
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514 | return ; # will go on next step |
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515 | } |
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516 | } |
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517 | # If we reach this point: an unknown |
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518 | # state as been entered ! |
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519 | return -code error "Bug! unknown state in DoOne \"$state\"\ |
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520 | (prg counter [OptGetPrgCounter $descriptions]:\ |
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521 | [OptCurDesc $descriptions])"; |
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522 | } |
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523 | |
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524 | # Parse the options given the key to previously registered description |
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525 | # and arguments list |
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526 | proc ::tcl::OptKeyParse {descKey arglist} { |
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527 | |
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528 | set desc [OptKeyGetDesc $descKey]; |
---|
529 | |
---|
530 | # make sure -help always give usage |
---|
531 | if {[string equal -nocase "-help" $arglist]} { |
---|
532 | return -code error [OptError "Usage information:" $desc 1]; |
---|
533 | } |
---|
534 | |
---|
535 | OptDoAll desc arglist; |
---|
536 | |
---|
537 | if {![Lempty $arglist]} { |
---|
538 | return -code error [OptTooManyArgs $desc $arglist]; |
---|
539 | } |
---|
540 | |
---|
541 | # Analyse the result |
---|
542 | # Walk through the tree: |
---|
543 | OptTreeVars $desc "#[expr {[info level]-1}]" ; |
---|
544 | } |
---|
545 | |
---|
546 | # determine string length for nice tabulated output |
---|
547 | proc OptTreeVars {desc level {vnamesLst {}}} { |
---|
548 | foreach item $desc { |
---|
549 | if {[OptIsCounter $item]} continue; |
---|
550 | if {[OptIsPrg $item]} { |
---|
551 | set vnamesLst [OptTreeVars $item $level $vnamesLst]; |
---|
552 | } else { |
---|
553 | set vname [OptVarName $item]; |
---|
554 | upvar $level $vname var |
---|
555 | if {[OptHasBeenSet $item]} { |
---|
556 | # puts "adding $vname" |
---|
557 | # lets use the input name for the returned list |
---|
558 | # it is more usefull, for instance you can check that |
---|
559 | # no flags at all was given with expr |
---|
560 | # {![string match "*-*" $Args]} |
---|
561 | lappend vnamesLst [OptName $item]; |
---|
562 | set var [OptValue $item]; |
---|
563 | } else { |
---|
564 | set var [OptDefaultValue $item]; |
---|
565 | } |
---|
566 | } |
---|
567 | } |
---|
568 | return $vnamesLst |
---|
569 | } |
---|
570 | |
---|
571 | |
---|
572 | # Check the type of a value |
---|
573 | # and emit an error if arg is not of the correct type |
---|
574 | # otherwise returns the canonical value of that arg (ie 0/1 for booleans) |
---|
575 | proc ::tcl::OptCheckType {arg type {typeArgs ""}} { |
---|
576 | # puts "checking '$arg' against '$type' ($typeArgs)"; |
---|
577 | |
---|
578 | # only types "any", "choice", and numbers can have leading "-" |
---|
579 | |
---|
580 | switch -exact -- $type { |
---|
581 | int { |
---|
582 | if {![string is integer -strict $arg]} { |
---|
583 | error "not an integer" |
---|
584 | } |
---|
585 | return $arg; |
---|
586 | } |
---|
587 | float { |
---|
588 | return [expr {double($arg)}] |
---|
589 | } |
---|
590 | script - |
---|
591 | list { |
---|
592 | # if llength fail : malformed list |
---|
593 | if {[llength $arg]==0 && [OptIsFlag $arg]} { |
---|
594 | error "no values with leading -" |
---|
595 | } |
---|
596 | return $arg; |
---|
597 | } |
---|
598 | boolean { |
---|
599 | if {![string is boolean -strict $arg]} { |
---|
600 | error "non canonic boolean" |
---|
601 | } |
---|
602 | # convert true/false because expr/if is broken with "!,... |
---|
603 | return [expr {$arg ? 1 : 0}] |
---|
604 | } |
---|
605 | choice { |
---|
606 | if {[lsearch -exact $typeArgs $arg] < 0} { |
---|
607 | error "invalid choice" |
---|
608 | } |
---|
609 | return $arg; |
---|
610 | } |
---|
611 | any { |
---|
612 | return $arg; |
---|
613 | } |
---|
614 | string - |
---|
615 | default { |
---|
616 | if {[OptIsFlag $arg]} { |
---|
617 | error "no values with leading -" |
---|
618 | } |
---|
619 | return $arg |
---|
620 | } |
---|
621 | } |
---|
622 | return neverReached; |
---|
623 | } |
---|
624 | |
---|
625 | # internal utilities |
---|
626 | |
---|
627 | # returns the number of flags matching the given arg |
---|
628 | # sets the (local) prg counter to the list of matches |
---|
629 | proc OptHits {descName arg} { |
---|
630 | upvar $descName desc; |
---|
631 | set hits 0 |
---|
632 | set hitems {} |
---|
633 | set i 1; |
---|
634 | |
---|
635 | set larg [string tolower $arg]; |
---|
636 | set len [string length $larg]; |
---|
637 | set last [expr {$len-1}]; |
---|
638 | |
---|
639 | foreach item [lrange $desc 1 end] { |
---|
640 | set flag [OptName $item] |
---|
641 | # lets try to match case insensitively |
---|
642 | # (string length ought to be cheap) |
---|
643 | set lflag [string tolower $flag]; |
---|
644 | if {$len == [string length $lflag]} { |
---|
645 | if {[string equal $larg $lflag]} { |
---|
646 | # Exact match case |
---|
647 | OptSetPrgCounter desc $i; |
---|
648 | return 1; |
---|
649 | } |
---|
650 | } elseif {[string equal $larg [string range $lflag 0 $last]]} { |
---|
651 | lappend hitems $i; |
---|
652 | incr hits; |
---|
653 | } |
---|
654 | incr i; |
---|
655 | } |
---|
656 | if {$hits} { |
---|
657 | OptSetPrgCounter desc $hitems; |
---|
658 | } |
---|
659 | return $hits |
---|
660 | } |
---|
661 | |
---|
662 | # Extract fields from the list structure: |
---|
663 | |
---|
664 | proc OptName {item} { |
---|
665 | lindex $item 1; |
---|
666 | } |
---|
667 | proc OptHasBeenSet {item} { |
---|
668 | Lget $item {2 0}; |
---|
669 | } |
---|
670 | proc OptValue {item} { |
---|
671 | Lget $item {2 1}; |
---|
672 | } |
---|
673 | |
---|
674 | proc OptIsFlag {name} { |
---|
675 | string match "-*" $name; |
---|
676 | } |
---|
677 | proc OptIsOpt {name} { |
---|
678 | string match {\?*} $name; |
---|
679 | } |
---|
680 | proc OptVarName {item} { |
---|
681 | set name [OptName $item]; |
---|
682 | if {[OptIsFlag $name]} { |
---|
683 | return [string range $name 1 end]; |
---|
684 | } elseif {[OptIsOpt $name]} { |
---|
685 | return [string trim $name "?"]; |
---|
686 | } else { |
---|
687 | return $name; |
---|
688 | } |
---|
689 | } |
---|
690 | proc OptType {item} { |
---|
691 | lindex $item 3 |
---|
692 | } |
---|
693 | proc OptTypeArgs {item} { |
---|
694 | lindex $item 4 |
---|
695 | } |
---|
696 | proc OptHelp {item} { |
---|
697 | lindex $item 5 |
---|
698 | } |
---|
699 | proc OptNeedValue {item} { |
---|
700 | expr {![string equal [OptType $item] boolflag]} |
---|
701 | } |
---|
702 | proc OptDefaultValue {item} { |
---|
703 | set val [OptTypeArgs $item] |
---|
704 | switch -exact -- [OptType $item] { |
---|
705 | choice {return [lindex $val 0]} |
---|
706 | boolean - |
---|
707 | boolflag { |
---|
708 | # convert back false/true to 0/1 because expr !$bool |
---|
709 | # is broken.. |
---|
710 | if {$val} { |
---|
711 | return 1 |
---|
712 | } else { |
---|
713 | return 0 |
---|
714 | } |
---|
715 | } |
---|
716 | } |
---|
717 | return $val |
---|
718 | } |
---|
719 | |
---|
720 | # Description format error helper |
---|
721 | proc OptOptUsage {item {what ""}} { |
---|
722 | return -code error "invalid description format$what: $item\n\ |
---|
723 | should be a list of {varname|-flagname ?-type? ?defaultvalue?\ |
---|
724 | ?helpstring?}"; |
---|
725 | } |
---|
726 | |
---|
727 | |
---|
728 | # Generate a canonical form single instruction |
---|
729 | proc OptNewInst {state varname type typeArgs help} { |
---|
730 | list $state $varname [list 0 {}] $type $typeArgs $help; |
---|
731 | # ^ ^ |
---|
732 | # | | |
---|
733 | # hasBeenSet=+ +=currentValue |
---|
734 | } |
---|
735 | |
---|
736 | # Translate one item to canonical form |
---|
737 | proc OptNormalizeOne {item} { |
---|
738 | set lg [Lassign $item varname arg1 arg2 arg3]; |
---|
739 | # puts "called optnormalizeone '$item' v=($varname), lg=$lg"; |
---|
740 | set isflag [OptIsFlag $varname]; |
---|
741 | set isopt [OptIsOpt $varname]; |
---|
742 | if {$isflag} { |
---|
743 | set state "flags"; |
---|
744 | } elseif {$isopt} { |
---|
745 | set state "optValue"; |
---|
746 | } elseif {![string equal $varname "args"]} { |
---|
747 | set state "value"; |
---|
748 | } else { |
---|
749 | set state "args"; |
---|
750 | } |
---|
751 | |
---|
752 | # apply 'smart' 'fuzzy' logic to try to make |
---|
753 | # description writer's life easy, and our's difficult : |
---|
754 | # let's guess the missing arguments :-) |
---|
755 | |
---|
756 | switch $lg { |
---|
757 | 1 { |
---|
758 | if {$isflag} { |
---|
759 | return [OptNewInst $state $varname boolflag false ""]; |
---|
760 | } else { |
---|
761 | return [OptNewInst $state $varname any "" ""]; |
---|
762 | } |
---|
763 | } |
---|
764 | 2 { |
---|
765 | # varname default |
---|
766 | # varname help |
---|
767 | set type [OptGuessType $arg1] |
---|
768 | if {[string equal $type "string"]} { |
---|
769 | if {$isflag} { |
---|
770 | set type boolflag |
---|
771 | set def false |
---|
772 | } else { |
---|
773 | set type any |
---|
774 | set def "" |
---|
775 | } |
---|
776 | set help $arg1 |
---|
777 | } else { |
---|
778 | set help "" |
---|
779 | set def $arg1 |
---|
780 | } |
---|
781 | return [OptNewInst $state $varname $type $def $help]; |
---|
782 | } |
---|
783 | 3 { |
---|
784 | # varname type value |
---|
785 | # varname value comment |
---|
786 | |
---|
787 | if {[regexp {^-(.+)$} $arg1 x type]} { |
---|
788 | # flags/optValue as they are optional, need a "value", |
---|
789 | # on the contrary, for a variable (non optional), |
---|
790 | # default value is pointless, 'cept for choices : |
---|
791 | if {$isflag || $isopt || ($type == "choice")} { |
---|
792 | return [OptNewInst $state $varname $type $arg2 ""]; |
---|
793 | } else { |
---|
794 | return [OptNewInst $state $varname $type "" $arg2]; |
---|
795 | } |
---|
796 | } else { |
---|
797 | return [OptNewInst $state $varname\ |
---|
798 | [OptGuessType $arg1] $arg1 $arg2] |
---|
799 | } |
---|
800 | } |
---|
801 | 4 { |
---|
802 | if {[regexp {^-(.+)$} $arg1 x type]} { |
---|
803 | return [OptNewInst $state $varname $type $arg2 $arg3]; |
---|
804 | } else { |
---|
805 | return -code error [OptOptUsage $item]; |
---|
806 | } |
---|
807 | } |
---|
808 | default { |
---|
809 | return -code error [OptOptUsage $item]; |
---|
810 | } |
---|
811 | } |
---|
812 | } |
---|
813 | |
---|
814 | # Auto magic lazy type determination |
---|
815 | proc OptGuessType {arg} { |
---|
816 | if { $arg == "true" || $arg == "false" } { |
---|
817 | return boolean |
---|
818 | } |
---|
819 | if {[string is integer -strict $arg]} { |
---|
820 | return int |
---|
821 | } |
---|
822 | if {[string is double -strict $arg]} { |
---|
823 | return float |
---|
824 | } |
---|
825 | return string |
---|
826 | } |
---|
827 | |
---|
828 | # Error messages front ends |
---|
829 | |
---|
830 | proc OptAmbigous {desc arg} { |
---|
831 | OptError "ambigous option \"$arg\", choose from:" [OptSelection $desc] |
---|
832 | } |
---|
833 | proc OptFlagUsage {desc arg} { |
---|
834 | OptError "bad flag \"$arg\", must be one of" $desc; |
---|
835 | } |
---|
836 | proc OptTooManyArgs {desc arguments} { |
---|
837 | OptError "too many arguments (unexpected argument(s): $arguments),\ |
---|
838 | usage:"\ |
---|
839 | $desc 1 |
---|
840 | } |
---|
841 | proc OptParamType {item} { |
---|
842 | if {[OptIsFlag $item]} { |
---|
843 | return "flag"; |
---|
844 | } else { |
---|
845 | return "parameter"; |
---|
846 | } |
---|
847 | } |
---|
848 | proc OptBadValue {item arg {err {}}} { |
---|
849 | # puts "bad val err = \"$err\""; |
---|
850 | OptError "bad value \"$arg\" for [OptParamType $item]"\ |
---|
851 | [list $item] |
---|
852 | } |
---|
853 | proc OptMissingValue {descriptions} { |
---|
854 | # set item [OptCurDescFinal $descriptions]; |
---|
855 | set item [OptCurDesc $descriptions]; |
---|
856 | OptError "no value given for [OptParamType $item] \"[OptName $item]\"\ |
---|
857 | (use -help for full usage) :"\ |
---|
858 | [list $item] |
---|
859 | } |
---|
860 | |
---|
861 | proc ::tcl::OptKeyError {prefix descKey {header 0}} { |
---|
862 | OptError $prefix [OptKeyGetDesc $descKey] $header; |
---|
863 | } |
---|
864 | |
---|
865 | # determine string length for nice tabulated output |
---|
866 | proc OptLengths {desc nlName tlName dlName} { |
---|
867 | upvar $nlName nl; |
---|
868 | upvar $tlName tl; |
---|
869 | upvar $dlName dl; |
---|
870 | foreach item $desc { |
---|
871 | if {[OptIsCounter $item]} continue; |
---|
872 | if {[OptIsPrg $item]} { |
---|
873 | OptLengths $item nl tl dl |
---|
874 | } else { |
---|
875 | SetMax nl [string length [OptName $item]] |
---|
876 | SetMax tl [string length [OptType $item]] |
---|
877 | set dv [OptTypeArgs $item]; |
---|
878 | if {[OptState $item] != "header"} { |
---|
879 | set dv "($dv)"; |
---|
880 | } |
---|
881 | set l [string length $dv]; |
---|
882 | # limit the space allocated to potentially big "choices" |
---|
883 | if {([OptType $item] != "choice") || ($l<=12)} { |
---|
884 | SetMax dl $l |
---|
885 | } else { |
---|
886 | if {![info exists dl]} { |
---|
887 | set dl 0 |
---|
888 | } |
---|
889 | } |
---|
890 | } |
---|
891 | } |
---|
892 | } |
---|
893 | # output the tree |
---|
894 | proc OptTree {desc nl tl dl} { |
---|
895 | set res ""; |
---|
896 | foreach item $desc { |
---|
897 | if {[OptIsCounter $item]} continue; |
---|
898 | if {[OptIsPrg $item]} { |
---|
899 | append res [OptTree $item $nl $tl $dl]; |
---|
900 | } else { |
---|
901 | set dv [OptTypeArgs $item]; |
---|
902 | if {[OptState $item] != "header"} { |
---|
903 | set dv "($dv)"; |
---|
904 | } |
---|
905 | append res [format "\n %-*s %-*s %-*s %s" \ |
---|
906 | $nl [OptName $item] $tl [OptType $item] \ |
---|
907 | $dl $dv [OptHelp $item]] |
---|
908 | } |
---|
909 | } |
---|
910 | return $res; |
---|
911 | } |
---|
912 | |
---|
913 | # Give nice usage string |
---|
914 | proc ::tcl::OptError {prefix desc {header 0}} { |
---|
915 | # determine length |
---|
916 | if {$header} { |
---|
917 | # add faked instruction |
---|
918 | set h [list [OptNewInst header Var/FlagName Type Value Help]]; |
---|
919 | lappend h [OptNewInst header ------------ ---- ----- ----]; |
---|
920 | lappend h [OptNewInst header {( -help} "" "" {gives this help )}] |
---|
921 | set desc [concat $h $desc] |
---|
922 | } |
---|
923 | OptLengths $desc nl tl dl |
---|
924 | # actually output |
---|
925 | return "$prefix[OptTree $desc $nl $tl $dl]" |
---|
926 | } |
---|
927 | |
---|
928 | |
---|
929 | ################ General Utility functions ####################### |
---|
930 | |
---|
931 | # |
---|
932 | # List utility functions |
---|
933 | # Naming convention: |
---|
934 | # "Lvarxxx" take the list VARiable name as argument |
---|
935 | # "Lxxxx" take the list value as argument |
---|
936 | # (which is not costly with Tcl8 objects system |
---|
937 | # as it's still a reference and not a copy of the values) |
---|
938 | # |
---|
939 | |
---|
940 | # Is that list empty ? |
---|
941 | proc ::tcl::Lempty {list} { |
---|
942 | expr {[llength $list]==0} |
---|
943 | } |
---|
944 | |
---|
945 | # Gets the value of one leaf of a lists tree |
---|
946 | proc ::tcl::Lget {list indexLst} { |
---|
947 | if {[llength $indexLst] <= 1} { |
---|
948 | return [lindex $list $indexLst]; |
---|
949 | } |
---|
950 | Lget [lindex $list [lindex $indexLst 0]] [lrange $indexLst 1 end]; |
---|
951 | } |
---|
952 | # Sets the value of one leaf of a lists tree |
---|
953 | # (we use the version that does not create the elements because |
---|
954 | # it would be even slower... needs to be written in C !) |
---|
955 | # (nb: there is a non trivial recursive problem with indexes 0, |
---|
956 | # which appear because there is no difference between a list |
---|
957 | # of 1 element and 1 element alone : [list "a"] == "a" while |
---|
958 | # it should be {a} and [listp a] should be 0 while [listp {a b}] would be 1 |
---|
959 | # and [listp "a b"] maybe 0. listp does not exist either...) |
---|
960 | proc ::tcl::Lvarset {listName indexLst newValue} { |
---|
961 | upvar $listName list; |
---|
962 | if {[llength $indexLst] <= 1} { |
---|
963 | Lvarset1nc list $indexLst $newValue; |
---|
964 | } else { |
---|
965 | set idx [lindex $indexLst 0]; |
---|
966 | set targetList [lindex $list $idx]; |
---|
967 | # reduce refcount on targetList (not really usefull now, |
---|
968 | # could be with optimizing compiler) |
---|
969 | # Lvarset1 list $idx {}; |
---|
970 | # recursively replace in targetList |
---|
971 | Lvarset targetList [lrange $indexLst 1 end] $newValue; |
---|
972 | # put updated sub list back in the tree |
---|
973 | Lvarset1nc list $idx $targetList; |
---|
974 | } |
---|
975 | } |
---|
976 | # Set one cell to a value, eventually create all the needed elements |
---|
977 | # (on level-1 of lists) |
---|
978 | variable emptyList {} |
---|
979 | proc ::tcl::Lvarset1 {listName index newValue} { |
---|
980 | upvar $listName list; |
---|
981 | if {$index < 0} {return -code error "invalid negative index"} |
---|
982 | set lg [llength $list]; |
---|
983 | if {$index >= $lg} { |
---|
984 | variable emptyList; |
---|
985 | for {set i $lg} {$i<$index} {incr i} { |
---|
986 | lappend list $emptyList; |
---|
987 | } |
---|
988 | lappend list $newValue; |
---|
989 | } else { |
---|
990 | set list [lreplace $list $index $index $newValue]; |
---|
991 | } |
---|
992 | } |
---|
993 | # same as Lvarset1 but no bound checking / creation |
---|
994 | proc ::tcl::Lvarset1nc {listName index newValue} { |
---|
995 | upvar $listName list; |
---|
996 | set list [lreplace $list $index $index $newValue]; |
---|
997 | } |
---|
998 | # Increments the value of one leaf of a lists tree |
---|
999 | # (which must exists) |
---|
1000 | proc ::tcl::Lvarincr {listName indexLst {howMuch 1}} { |
---|
1001 | upvar $listName list; |
---|
1002 | if {[llength $indexLst] <= 1} { |
---|
1003 | Lvarincr1 list $indexLst $howMuch; |
---|
1004 | } else { |
---|
1005 | set idx [lindex $indexLst 0]; |
---|
1006 | set targetList [lindex $list $idx]; |
---|
1007 | # reduce refcount on targetList |
---|
1008 | Lvarset1nc list $idx {}; |
---|
1009 | # recursively replace in targetList |
---|
1010 | Lvarincr targetList [lrange $indexLst 1 end] $howMuch; |
---|
1011 | # put updated sub list back in the tree |
---|
1012 | Lvarset1nc list $idx $targetList; |
---|
1013 | } |
---|
1014 | } |
---|
1015 | # Increments the value of one cell of a list |
---|
1016 | proc ::tcl::Lvarincr1 {listName index {howMuch 1}} { |
---|
1017 | upvar $listName list; |
---|
1018 | set newValue [expr {[lindex $list $index]+$howMuch}]; |
---|
1019 | set list [lreplace $list $index $index $newValue]; |
---|
1020 | return $newValue; |
---|
1021 | } |
---|
1022 | # Removes the first element of a list |
---|
1023 | # and returns the new list value |
---|
1024 | proc ::tcl::Lvarpop1 {listName} { |
---|
1025 | upvar $listName list; |
---|
1026 | set list [lrange $list 1 end]; |
---|
1027 | } |
---|
1028 | # Same but returns the removed element |
---|
1029 | # (Like the tclX version) |
---|
1030 | proc ::tcl::Lvarpop {listName} { |
---|
1031 | upvar $listName list; |
---|
1032 | set el [lindex $list 0]; |
---|
1033 | set list [lrange $list 1 end]; |
---|
1034 | return $el; |
---|
1035 | } |
---|
1036 | # Assign list elements to variables and return the length of the list |
---|
1037 | proc ::tcl::Lassign {list args} { |
---|
1038 | # faster than direct blown foreach (which does not byte compile) |
---|
1039 | set i 0; |
---|
1040 | set lg [llength $list]; |
---|
1041 | foreach vname $args { |
---|
1042 | if {$i>=$lg} break |
---|
1043 | uplevel 1 [list ::set $vname [lindex $list $i]]; |
---|
1044 | incr i; |
---|
1045 | } |
---|
1046 | return $lg; |
---|
1047 | } |
---|
1048 | |
---|
1049 | # Misc utilities |
---|
1050 | |
---|
1051 | # Set the varname to value if value is greater than varname's current value |
---|
1052 | # or if varname is undefined |
---|
1053 | proc ::tcl::SetMax {varname value} { |
---|
1054 | upvar 1 $varname var |
---|
1055 | if {![info exists var] || $value > $var} { |
---|
1056 | set var $value |
---|
1057 | } |
---|
1058 | } |
---|
1059 | |
---|
1060 | # Set the varname to value if value is smaller than varname's current value |
---|
1061 | # or if varname is undefined |
---|
1062 | proc ::tcl::SetMin {varname value} { |
---|
1063 | upvar 1 $varname var |
---|
1064 | if {![info exists var] || $value < $var} { |
---|
1065 | set var $value |
---|
1066 | } |
---|
1067 | } |
---|
1068 | |
---|
1069 | |
---|
1070 | # everything loaded fine, lets create the test proc: |
---|
1071 | # OptCreateTestProc |
---|
1072 | # Don't need the create temp proc anymore: |
---|
1073 | # rename OptCreateTestProc {} |
---|
1074 | } |
---|