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
|
###
# Bits stolen from fileutil
###
###
# Search for the pattern [emph pattern] amongst $files
###
proc ::practcl::grep {pattern {files {}}} {
set result [list]
if {[llength $files] == 0} {
# read from stdin
set lnum 0
while {[gets stdin line] >= 0} {
incr lnum
if {[regexp -- $pattern $line]} {
lappend result "${lnum}:${line}"
}
}
} else {
foreach filename $files {
set file [open $filename r]
set lnum 0
while {[gets $file line] >= 0} {
incr lnum
if {[regexp -- $pattern $line]} {
lappend result "${filename}:${lnum}:${line}"
}
}
close $file
}
}
return $result
}
proc ::practcl::file_lexnormalize {sp} {
set spx [file split $sp]
# Resolution of embedded relative modifiers (., and ..).
if {
([lsearch -exact $spx . ] < 0) &&
([lsearch -exact $spx ..] < 0)
} {
# Quick path out if there are no relative modifiers
return $sp
}
set absolute [expr {![string equal [file pathtype $sp] relative]}]
# A volumerelative path counts as absolute for our purposes.
set sp $spx
set np {}
set noskip 1
while {[llength $sp]} {
set ele [lindex $sp 0]
set sp [lrange $sp 1 end]
set islast [expr {[llength $sp] == 0}]
if {[string equal $ele ".."]} {
if {
($absolute && ([llength $np] > 1)) ||
(!$absolute && ([llength $np] >= 1))
} {
# .. : Remove the previous element added to the
# new path, if there actually is enough to remove.
set np [lrange $np 0 end-1]
}
} elseif {[string equal $ele "."]} {
# Ignore .'s, they stay at the current location
continue
} else {
# A regular element.
lappend np $ele
}
}
if {[llength $np] > 0} {
return [eval [linsert $np 0 file join]]
# 8.5: return [file join {*}$np]
}
return {}
}
###
# Calculate a relative path between base and dst
#
# example:
# ::practcl::file_relative ~/build/tcl/unix ~/build/tcl/library
# > ../library
###
proc ::practcl::file_relative {base dst} {
# Ensure that the link to directory 'dst' is properly done relative to
# the directory 'base'.
if {![string equal [file pathtype $base] [file pathtype $dst]]} {
return -code error "Unable to compute relation for paths of different pathtypes: [file pathtype $base] vs. [file pathtype $dst], ($base vs. $dst)"
}
set base [file_lexnormalize [file join [pwd] $base]]
set dst [file_lexnormalize [file join [pwd] $dst]]
set save $dst
set base [file split $base]
set dst [file split $dst]
while {[string equal [lindex $dst 0] [lindex $base 0]]} {
set dst [lrange $dst 1 end]
set base [lrange $base 1 end]
if {![llength $dst]} {break}
}
set dstlen [llength $dst]
set baselen [llength $base]
if {($dstlen == 0) && ($baselen == 0)} {
# Cases:
# (a) base == dst
set dst .
} else {
# Cases:
# (b) base is: base/sub = sub
# dst is: base = {}
# (c) base is: base = {}
# dst is: base/sub = sub
while {$baselen > 0} {
set dst [linsert $dst 0 ..]
incr baselen -1
}
# 8.5: set dst [file join {*}$dst]
set dst [eval [linsert $dst 0 file join]]
}
return $dst
}
# ::fileutil::findByPattern --
#
# Specialization of find. Finds files based on their names,
# which have to match the specified patterns. Options are used
# to specify which type of patterns (regexp-, glob-style) is
# used.
#
# Arguments:
# basedir Directory to start searching from.
# args Options (-glob, -regexp, --) followed by a
# list of patterns to search for.
#
# Results:
# files a list of interesting files.
proc ::practcl::findByPattern {basedir patterns} {
set queue $basedir
set result {}
while {[llength $queue]} {
set item [lindex $queue 0]
set queue [lrange $queue 1 end]
if {[file isdirectory $item]} {
foreach path [glob -nocomplain [file join $item *]] {
lappend queue $path
}
continue
}
foreach pattern $patterns {
set fname [file tail $item]
if {[string match $pattern $fname]} {
lappend result $item
break
}
}
}
return $result
}
###
# Record an event in the practcl log
###
proc ::practcl::log {fname comment} {
set fname [file normalize $fname]
if {[info exists ::practcl::logchan($fname)]} {
set fout $::practcl::logchan($fname)
after cancel $::practcl::logevent($fname)
} else {
set fout [open $fname a]
}
puts $fout $comment
# Defer close until idle
set ::practcl::logevent($fname) [after idle "close $fout ; unset ::practcl::logchan($fname)"]
}
|
