summaryrefslogtreecommitdiffstats
path: root/tcl8.6/tools/regexpTestLib.tcl
blob: d84a01284afb17708631a81f5fa788d5dec1798e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
# regexpTestLib.tcl --
#
# This file contains tcl procedures used by spencer2testregexp.tcl and
# spencer2regexp.tcl, which are programs written to convert Henry
# Spencer's test suite to tcl test files.
#
# Copyright (c) 1996 by Sun Microsystems, Inc.

proc readInputFile {} {
    global inFileName
    global lineArray

    set fileId [open $inFileName r]

    set i 0
    while {[gets $fileId line] >= 0} {

	set len [string length $line]

	if {($len > 0) && ([string index $line [expr $len - 1]] == "\\")} {
	    if {[info exists lineArray(c$i)] == 0} {
		set lineArray(c$i) 1
	    } else {
		incr lineArray(c$i)
	    }
	    set line [string range $line 0 [expr $len - 2]]
	    append lineArray($i) $line
	    continue
	}
	if {[info exists lineArray(c$i)] == 0} {
	    set lineArray(c$i) 1
	} else {
	    incr lineArray(c$i)
	}
	append lineArray($i) $line
	incr i
    }

    close $fileId
    return $i
}

#
# strings with embedded @'s are truncated
# unpreceeded @'s are replaced by {}
#
proc removeAts {ls} {
    set len [llength $ls]
    set newLs {}
    foreach item $ls {
	regsub @.* $item "" newItem
	lappend newLs $newItem
    }
    return $newLs
}

proc convertErrCode {code} {

    set errMsg "couldn't compile regular expression pattern:"

    if {[string compare $code "INVARG"] == 0} {
	return "$errMsg invalid argument to regex routine"
    } elseif {[string compare $code "BADRPT"] == 0} {
	return "$errMsg ?+* follows nothing"
    } elseif {[string compare $code "BADBR"] == 0} {
	return "$errMsg invalid repetition count(s)"
    } elseif {[string compare $code "BADOPT"] == 0} {
	return "$errMsg invalid embedded option"
    } elseif {[string compare $code "EPAREN"] == 0} {
	return "$errMsg unmatched ()"
    } elseif {[string compare $code "EBRACE"] == 0} {
	return "$errMsg unmatched {}"
    } elseif {[string compare $code "EBRACK"] == 0} {
	return "$errMsg unmatched \[\]"
    } elseif {[string compare $code "ERANGE"] == 0} {
	return "$errMsg invalid character range"
    } elseif {[string compare $code "ECTYPE"] == 0} {
	return "$errMsg invalid character class"
    } elseif {[string compare $code "ECOLLATE"] == 0} {
	return "$errMsg invalid collating element"
    } elseif {[string compare $code "EESCAPE"] == 0} {
	return "$errMsg invalid escape sequence"
    } elseif {[string compare $code "BADPAT"] == 0} {
	return "$errMsg invalid regular expression"
    } elseif {[string compare $code "ESUBREG"] == 0} {
	return "$errMsg invalid backreference number"
    } elseif {[string compare $code "IMPOSS"] == 0} {
	return "$errMsg can never match"
    }
    return "$errMsg $code"
}

proc writeOutputFile {numLines fcn} {
    global outFileName
    global lineArray

    # open output file and write file header info to it.

    set fileId [open $outFileName w]

    puts $fileId "# Commands covered:  $fcn"
    puts $fileId "#"
    puts $fileId "# This Tcl-generated file contains tests for the $fcn tcl command."
    puts $fileId "# Sourcing this file into Tcl runs the tests and generates output for"
    puts $fileId "# errors.  No output means no errors were found.  Setting VERBOSE to"
    puts $fileId "# -1 will run tests that are known to fail."
    puts $fileId "#"
    puts $fileId "# Copyright (c) 1998 Sun Microsystems, Inc."
    puts $fileId "#"
    puts $fileId "# See the file \"license.terms\" for information on usage and redistribution"
    puts $fileId "# of this file, and for a DISCLAIMER OF ALL WARRANTIES."
    puts $fileId "#"
    puts $fileId "\# SCCS: \%Z\% \%M\% \%I\% \%E\% \%U\%"
    puts $fileId "\nproc print \{arg\} \{puts \$arg\}\n"
    puts $fileId "if \{\[string compare test \[info procs test\]\] == 1\} \{"
    puts $fileId "    source defs ; set VERBOSE -1\n\}\n"
    puts $fileId "if \{\$VERBOSE != -1\} \{"
    puts $fileId "    proc print \{arg\} \{\}\n\}\n"
    puts $fileId "#"
    puts $fileId "# The remainder of this file is Tcl tests that have been"
    puts $fileId "# converted from Henry Spencer's regexp test suite."
    puts $fileId "#\n"

    set lineNum 0
    set srcLineNum 1
    while {$lineNum < $numLines} {

	set currentLine $lineArray($lineNum)

	# copy comment string to output file and continue

	if {[string index $currentLine 0] == "#"} {
	    puts $fileId $currentLine
	    incr srcLineNum $lineArray(c$lineNum)
	    incr lineNum
	    continue
	}

	set len [llength $currentLine]

	# copy empty string to output file and continue

	if {$len == 0} {
	    puts $fileId "\n"
	    incr srcLineNum $lineArray(c$lineNum)
	    incr lineNum
	    continue
	}
	if {($len < 3)} {
	    puts "warning: test is too short --\n\t$currentLine"
	    incr srcLineNum $lineArray(c$lineNum)
	    incr lineNum
	    continue
	}

	puts $fileId [convertTestLine $currentLine $len $lineNum $srcLineNum]

	incr srcLineNum $lineArray(c$lineNum)
	incr lineNum
    }

    close $fileId
}

proc convertTestLine {currentLine len lineNum srcLineNum} {

    regsub -all {(?b)\\} $currentLine {\\\\} currentLine
    set re [lindex $currentLine 0]
    set flags [lindex $currentLine 1]
    set str [lindex $currentLine 2]

    # based on flags, decide whether to skip the test

    if {[findSkipFlag $flags]} {
	regsub -all {\[|\]|\(|\)|\{|\}|\#} $currentLine {\&} line
	set msg "\# skipping char mapping test from line $srcLineNum\n"
	append msg "print \{... skip test from line $srcLineNum:  $line\}"
	return $msg
    }

    # perform mapping if '=' flag exists

    set noBraces 0
    if {[regexp {=|>} $flags] == 1} {
	regsub -all {_} $currentLine {\\ } currentLine
	regsub -all {A} $currentLine {\\007} currentLine
	regsub -all {B} $currentLine {\\b} currentLine
	regsub -all {E} $currentLine {\\033} currentLine
	regsub -all {F} $currentLine {\\f} currentLine
	regsub -all {N} $currentLine {\\n} currentLine

	# if and \r substitutions are made, do not wrap re, flags,
	# str, and result in braces

	set noBraces [regsub -all {R} $currentLine {\\\u000D} currentLine]
	regsub -all {T} $currentLine {\\t} currentLine
	regsub -all {V} $currentLine {\\v} currentLine
	if {[regexp {=} $flags] == 1} {
	    set re [lindex $currentLine 0]
	}
	set str [lindex $currentLine 2]
    }
    set flags [removeFlags $flags]

    # find the test result

    set numVars [expr $len - 3]
    set vars {}
    set vals {}
    set result 0
    set v 0

    if {[regsub {\*} "$flags" "" newFlags] == 1} {
	# an error is expected

	if {[string compare $str "EMPTY"] == 0} {
	    # empty regexp is not an error
	    # skip this test

	    return "\# skipping the empty-re test from line $srcLineNum\n"
	}
	set flags $newFlags
	set result "\{1 \{[convertErrCode $str]\}\}"
    } elseif {$numVars > 0} {
	# at least 1 match is made

	if {[regexp {s} $flags] == 1} {
	    set result "\{0 1\}"
	} else {
	    while {$v < $numVars} {
		append vars " var($v)"
		append vals " \$var($v)"
		incr v
	    }
	    set tmp [removeAts [lrange $currentLine 3 $len]]
	    set result "\{0 \{1 $tmp\}\}"
	    if {$noBraces} {
		set result "\[subst $result\]"
	    }
	}
    } else {
	# no match is made

	set result "\{0 0\}"
    }

    # set up the test and write it to the output file

    set cmd [prepareCmd $flags $re $str $vars $noBraces]
    if {$cmd == -1} {
	return "\# skipping test with metasyntax from line $srcLineNum\n"
    }

    set test "test regexp-1.$srcLineNum \{converted from line $srcLineNum\} \{\n"
    append test "\tcatch {unset var}\n"
    append test "\tlist \[catch \{\n"
    append test "\t\tset match \[$cmd\]\n"
    append test "\t\tlist \$match $vals\n"
    append test "\t\} msg\] \$msg\n"
    append test "\} $result\n"
    return $test
}