Class: ChkBuild::LogFile

Inherits:
Object
  • Object
show all
Defined in:
lib/chkbuild/logfile.rb

Constant Summary collapse

InitialMark = 
'=='

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(filename, writemode) ⇒ LogFile

Returns a new instance of LogFile.



83
84
85
86
87
88
89
90
91
92
 
# File 'lib/chkbuild/logfile.rb', line 83

def initialize(filename, writemode)
  @writemode = writemode
  mode = writemode ? File::RDWR|File::CREAT|File::APPEND : File::RDONLY
  @filename = filename
  @io = File.open(filename, mode)
  @io.set_encoding("ascii-8bit") if @io.respond_to? :set_encoding
  @io.sync = true
  @mark = read_separator
  @sections = detect_sections
end

Class Method Details

.read_open(filename) ⇒ Object 



79
80
81
 
# File 'lib/chkbuild/logfile.rb', line 79

def self.read_open(filename)
  self.new(filename, false)
end

.write_open(filename, build) ⇒ Object 



33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
 
# File 'lib/chkbuild/logfile.rb', line 33

def self.write_open(filename, build)
  logfile = self.new(filename, true)
  logfile.start_section build.depsuffixed_name
  logfile.with_default_output {
    system("uname -a")
    section_started = false
    build.traverse_depbuild {|depbuild|
      if !section_started
        logfile.start_section 'dependencies'
        section_started = true
      end
      if depbuild.suffixed_name == depbuild.version
        puts "#{depbuild.suffixed_name} #{depbuild.start_time}"
      else
        puts "#{depbuild.suffixed_name} #{depbuild.start_time} (#{depbuild.version})"
      end
    }
  }
  logfile
end

Instance Method Details

#change_default_output ⇒ Object 



134
135
136
137
138
139
140
 
# File 'lib/chkbuild/logfile.rb', line 134

def change_default_output
  raise "not opened for writing" if !@writemode
  STDOUT.reopen(@save_io = File.for_fd(@io.fileno, File::WRONLY|File::APPEND))
  STDERR.reopen(STDOUT)
  STDOUT.sync = true
  STDERR.sync = true
end

#dependencies ⇒ Object 



54
55
56
57
58
59
60
61
62
63
64
65
 
# File 'lib/chkbuild/logfile.rb', line 54

def dependencies
  return [] unless log = self.get_section('dependencies')
  r = []
  log.each_line {|line|
    if /^(\S+) (\d+T\d+) \((.*)\)$/ =~ line
      r << [$1, $2, $3]
    elsif /^(\S+) (\d+T\d+)$/ =~ line
      r << [$1, $2, $1]
    end
  }
  r
end

#depsuffixed_name ⇒ Object 



67
68
69
70
71
72
73
 
# File 'lib/chkbuild/logfile.rb', line 67

def depsuffixed_name
  return @depsuffixed_name if defined? @depsuffixed_name
  if /\A\S+\s+(\S+)/ =~ self.get_all_log
    return @depsuffixed_name = $1
  end
  raise "unexpected log format"
end

#each_secname(&block) ⇒ Object 



169
170
171
 
# File 'lib/chkbuild/logfile.rb', line 169

def each_secname(&block)
  @sections.keys.sort_by {|secname| @sections[secname] }.each(&block)
end

#get_all_log ⇒ Object 



188
189
190
191
 
# File 'lib/chkbuild/logfile.rb', line 188

def get_all_log
  @io.rewind
  @io.read
end

#get_section(secname) ⇒ Object 



181
182
183
184
185
186
 
# File 'lib/chkbuild/logfile.rb', line 181

def get_section(secname)
  spos = @sections[secname]
  return nil if !spos
  @io.seek spos
  @io.gets("\n#{@mark} ").chomp("#{@mark} ").sub(/\A.*\n/, '')
end

#modify_section(secname, data) ⇒ Object

Raises:

  • (ArgumentError) 


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
 
# File 'lib/chkbuild/logfile.rb', line 193

def modify_section(secname, data)
  raise "not opened for writing" if !@writemode
  spos = @sections[secname]
  raise ArgumentError, "no section: #{secname.inspect}" if !spos
  data += "\n" if /\n\z/ !~ data
  old = nil
  File.open(@filename, File::RDWR) {|f|
    f.seek spos
    rest = f.read
    if /\n#{Regexp.quote @mark} / =~ rest
      epos = $~.begin(0) + 1
      curr = rest[0...epos]
      rest = rest[epos..-1]
    else
      curr = rest
      rest = ''
    end
    if /\n/ =~ curr
      secline = $` + $&
      old = $'
    else
      secline = curr + "\n"
      old = ''
    end
    f.seek spos
    f.print secline, data, rest
    f.flush
    f.truncate(f.pos)
  }
  off = data.length - old.length
  @sections.each_pair {|n, pos|
    if spos < pos
      @sections[n] = pos + off
    end
  }
  nil
end

#secnames ⇒ Object 



165
166
167
 
# File 'lib/chkbuild/logfile.rb', line 165

def secnames
  @sections.keys.sort_by {|secname| @sections[secname] }
end

#section_size(secname) ⇒ Object

Raises:

  • (ArgumentError) 


173
174
175
176
177
178
179
 
# File 'lib/chkbuild/logfile.rb', line 173

def section_size(secname)
  spos = @sections[secname]
  raise ArgumentError, "no section : #{secname.inspect}" if !spos
  epos = @sections.values.reject {|pos| pos <= spos }.min
  epos = @io.stat.size if !epos
  epos - spos
end

#start_section(secname) ⇒ Object

start_section returns the (unique) section name.



143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
 
# File 'lib/chkbuild/logfile.rb', line 143

def start_section(secname)
  @io.flush
  if 0 < @io.stat.size
    @io.seek(-1, IO::SEEK_END)
    if @io.read != "\n"
      @io.write "\n"
    end
  end
  spos = @io.pos
  secname = secname.strip
  if @sections[secname]
    i = 2
    while @sections["#{secname}(#{i})"]
      i += 1
    end
    secname = "#{secname}(#{i})"
  end
  @sections[secname] = spos
  @io.write "#{@mark} #{secname} \# #{Time.now.iso8601}\n"
  secname
end

#suffixed_name ⇒ Object 



75
 
# File 'lib/chkbuild/logfile.rb', line 75

def suffixed_name() depsuffixed_name.sub(/_.*/, '') end

#suffixes ⇒ Object 



77
 
# File 'lib/chkbuild/logfile.rb', line 77

def suffixes() suffixed_name.split(/-/)[1..-1] end

#target_name ⇒ Object 



76
 
# File 'lib/chkbuild/logfile.rb', line 76

def target_name() suffixed_name.sub(/-.*/, '') end

#with_default_output ⇒ Object

logfile.with_default_output { … }



121
122
123
124
125
126
127
128
129
130
131
132
 
# File 'lib/chkbuild/logfile.rb', line 121

def with_default_output
  raise "not opened for writing" if !@writemode
  File.open(@filename, File::WRONLY|File::APPEND) {|f|
    STDERR.tmp_reopen(f) {
      STDERR.sync = true
      STDOUT.tmp_reopen(f) {
        STDOUT.sync = true
        yield
      }
    }
  }
end