gdb/copyright.py

   1 #! /usr/bin/env python
   2
   3 """copyright.py
   4
   5 This script updates most of the files that are not already handled
   6 by copyright.sh.  It must be run from the gdb/ subdirectory of the
   7 GDB source tree.
   8
   9 """
  10
  11 import datetime
  12 import re
  13 import os
  14 import os.path
  15
  16 class Comment(object):
  17     """A class describing comment.
  18
  19     ATTRIBUTES
  20       start:  A string describing how comments are started.
  21       stop:   A string describing how comments end.  If None, then
  22               a comment ends at the end of the line.
  23       start2: Some files accept more than 1 kind of comment.
  24               For those that do, this is the alternative form.
  25               For now, it is assumed that if start2 is not None,
  26               then stop is None (thus no stop2 attribute).
  27     """
  28     def __init__(self, start, stop=None, start2=None, max_lines=30):
  29         """The "Copyright" keyword should be within MAX_LINES lines
  30         from the start of the file."""
  31         self.start = start
  32         self.stop = stop
  33         self.start2 = start2
  34         self.max_lines = max_lines
  35
  36 # The Comment object for Ada code (and GPR files).
  37 ADA_COMMENT = Comment(start="--")
  38
  39 THIS_YEAR = str(datetime.date.today().year)
  40
  41 # Files which should not be modified, either because they are
  42 # generated, non-FSF, or otherwise special (e.g. license text,
  43 # or test cases which must be sensitive to line numbering).
  44 EXCLUSION_LIST = (
  45   "COPYING", "COPYING.LIB", "CVS", "configure", "copying.c", "gdbarch.c",
  46   "gdbarch.h", "fdl.texi", "gpl.texi", "gdbtk", "gdb.gdbtk", "osf-share",
  47   "aclocal.m4", "step-line.inp", "step-line.c",
  48   )
  49
  50 # Files that are too different from the rest to be processed automatically.
  51 BY_HAND = ['../sim/ppc/psim.texinfo']
  52
  53 # Files for which we know that they do not have a copyright header.
  54 # Ideally, this list should be empty (but it may not be possible to
  55 # add a copyright header in some of them).
  56 NO_COPYRIGHT = (
  57    # Configure files.  We should fix those, one day.
  58    "testsuite/gdb.cell/configure.ac", "testsuite/gdb.hp/configure.ac",
  59    "testsuite/gdb.hp/gdb.aCC/configure.ac",
  60    "testsuite/gdb.hp/gdb.base-hp/configure.ac",
  61    "testsuite/gdb.hp/gdb.compat/configure.ac",
  62    "testsuite/gdb.hp/gdb.defects/configure.ac",
  63    "testsuite/gdb.hp/gdb.objdbg/configure.ac",
  64    "testsuite/gdb.stabs/configure.ac",
  65    "../sim/arm/configure.ac", "../sim/avr/configure.ac",
  66    "../sim/common/configure.ac", "../sim/configure.ac",
  67    "../sim/cr16/configure.ac", "../sim/cris/configure.ac",
  68    "../sim/d10v/configure.ac", "../sim/erc32/configure.ac",
  69    "../sim/frv/configure.ac", "../sim/h8300/configure.ac",
  70    "../sim/igen/configure.ac", "../sim/iq2000/configure.ac",
  71    "../sim/lm32/configure.ac", "../sim/m32r/configure.ac",
  72    "../sim/m68hc11/configure.ac", "../sim/mcore/configure.ac",
  73    "../sim/microblaze/configure.ac", "../sim/mips/configure.ac",
  74    "../sim/mn10300/configure.ac", "../sim/moxie/configure.ac",
  75    "../sim/ppc/configure.ac", "../sim/sh/configure.ac",
  76    "../sim/sh64/configure.ac", "../sim/testsuite/configure.ac",
  77    "../sim/testsuite/d10v-elf/configure.ac",
  78    "../sim/testsuite/frv-elf/configure.ac",
  79    "../sim/testsuite/m32r-elf/configure.ac",
  80    "../sim/testsuite/mips64el-elf/configure.ac", "../sim/v850/configure.ac",
  81    # Assembly files.  It's not certain that we can add a copyright
  82    # header in a way that works for all platforms supported by the
  83    # testcase...
  84    "testsuite/gdb.arch/pa-nullify.s", "testsuite/gdb.arch/pa64-nullify.s",
  85    "testsuite/gdb.asm/asmsrc1.s", "testsuite/gdb.asm/asmsrc2.s",
  86    "testsuite/gdb.disasm/am33.s", "testsuite/gdb.disasm/h8300s.s",
  87    "testsuite/gdb.disasm/hppa.s", "testsuite/gdb.disasm/mn10200.s",
  88    "testsuite/gdb.disasm/mn10300.s", "testsuite/gdb.disasm/sh3.s",
  89    "testsuite/gdb.disasm/t01_mov.s", "testsuite/gdb.disasm/t02_mova.s",
  90    "testsuite/gdb.disasm/t03_add.s", "testsuite/gdb.disasm/t04_sub.s",
  91    "testsuite/gdb.disasm/t05_cmp.s", "testsuite/gdb.disasm/t06_ari2.s",
  92    "testsuite/gdb.disasm/t07_ari3.s", "testsuite/gdb.disasm/t08_or.s",
  93    "testsuite/gdb.disasm/t09_xor.s", "testsuite/gdb.disasm/t10_and.s",
  94    "testsuite/gdb.disasm/t11_logs.s", "testsuite/gdb.disasm/t12_bit.s",
  95    "testsuite/gdb.disasm/t13_otr.s", "testsuite/gdb.hp/gdb.base-hp/reg-pa64.s",
  96    "testsuite/gdb.hp/gdb.base-hp/reg.s",
  97    "../sim/testsuite/d10v-elf/exit47.s",
  98    "../sim/testsuite/d10v-elf/hello.s",
  99    "../sim/testsuite/d10v-elf/loop.s",
 100    "../sim/testsuite/d10v-elf/t-ae-ld-d.s",
 101    "../sim/testsuite/d10v-elf/t-ae-ld-i.s",
 102    "../sim/testsuite/d10v-elf/t-ae-ld-id.s",
 103    "../sim/testsuite/d10v-elf/t-ae-ld-im.s",
 104    "../sim/testsuite/d10v-elf/t-ae-ld-ip.s",
 105    "../sim/testsuite/d10v-elf/t-ae-ld2w-d.s",
 106    "../sim/testsuite/d10v-elf/t-ae-ld2w-i.s",
 107    "../sim/testsuite/d10v-elf/t-ae-ld2w-id.s",
 108    "../sim/testsuite/d10v-elf/t-ae-ld2w-im.s",
 109    "../sim/testsuite/d10v-elf/t-ae-ld2w-ip.s",
 110    "../sim/testsuite/d10v-elf/t-ae-st-d.s",
 111    "../sim/testsuite/d10v-elf/t-ae-st-i.s",
 112    "../sim/testsuite/d10v-elf/t-ae-st-id.s",
 113    "../sim/testsuite/d10v-elf/t-ae-st-im.s",
 114    "../sim/testsuite/d10v-elf/t-ae-st-ip.s",
 115    "../sim/testsuite/d10v-elf/t-ae-st-is.s",
 116    "../sim/testsuite/d10v-elf/t-ae-st2w-d.s",
 117    "../sim/testsuite/d10v-elf/t-ae-st2w-i.s",
 118    "../sim/testsuite/d10v-elf/t-ae-st2w-id.s",
 119    "../sim/testsuite/d10v-elf/t-ae-st2w-im.s",
 120    "../sim/testsuite/d10v-elf/t-ae-st2w-ip.s",
 121    "../sim/testsuite/d10v-elf/t-ae-st2w-is.s",
 122    "../sim/testsuite/d10v-elf/t-dbt.s",
 123    "../sim/testsuite/d10v-elf/t-ld-st.s",
 124    "../sim/testsuite/d10v-elf/t-mac.s",
 125    "../sim/testsuite/d10v-elf/t-mod-ld-pre.s",
 126    "../sim/testsuite/d10v-elf/t-msbu.s",
 127    "../sim/testsuite/d10v-elf/t-mulxu.s",
 128    "../sim/testsuite/d10v-elf/t-mvtac.s",
 129    "../sim/testsuite/d10v-elf/t-mvtc.s",
 130    "../sim/testsuite/d10v-elf/t-rac.s",
 131    "../sim/testsuite/d10v-elf/t-rachi.s",
 132    "../sim/testsuite/d10v-elf/t-rdt.s",
 133    "../sim/testsuite/d10v-elf/t-rep.s",
 134    "../sim/testsuite/d10v-elf/t-rie-xx.s",
 135    "../sim/testsuite/d10v-elf/t-rte.s",
 136    "../sim/testsuite/d10v-elf/t-sac.s",
 137    "../sim/testsuite/d10v-elf/t-sachi.s",
 138    "../sim/testsuite/d10v-elf/t-sadd.s",
 139    "../sim/testsuite/d10v-elf/t-slae.s",
 140    "../sim/testsuite/d10v-elf/t-sp.s",
 141    "../sim/testsuite/d10v-elf/t-sub.s",
 142    "../sim/testsuite/d10v-elf/t-sub2w.s",
 143    "../sim/testsuite/d10v-elf/t-subi.s",
 144    "../sim/testsuite/d10v-elf/t-trap.s",
 145    "../sim/testsuite/frv-elf/cache.s",
 146    "../sim/testsuite/frv-elf/exit47.s",
 147    "../sim/testsuite/frv-elf/grloop.s",
 148    "../sim/testsuite/frv-elf/hello.s",
 149    "../sim/testsuite/frv-elf/loop.s",
 150    "../sim/testsuite/m32r-elf/exit47.s",
 151    "../sim/testsuite/m32r-elf/hello.s",
 152    "../sim/testsuite/m32r-elf/loop.s",
 153    "../sim/testsuite/sim/cris/hw/rv-n-cris/quit.s",
 154    "../sim/testsuite/sim/h8300/addb.s",
 155    "../sim/testsuite/sim/h8300/addl.s",
 156    "../sim/testsuite/sim/h8300/adds.s",
 157    "../sim/testsuite/sim/h8300/addw.s",
 158    "../sim/testsuite/sim/h8300/addx.s",
 159    "../sim/testsuite/sim/h8300/andb.s",
 160    "../sim/testsuite/sim/h8300/andl.s",
 161    "../sim/testsuite/sim/h8300/andw.s",
 162    "../sim/testsuite/sim/h8300/band.s",
 163    "../sim/testsuite/sim/h8300/bfld.s",
 164    "../sim/testsuite/sim/h8300/biand.s",
 165    "../sim/testsuite/sim/h8300/bra.s",
 166    "../sim/testsuite/sim/h8300/brabc.s",
 167    "../sim/testsuite/sim/h8300/bset.s",
 168    "../sim/testsuite/sim/h8300/cmpb.s",
 169    "../sim/testsuite/sim/h8300/cmpl.s",
 170    "../sim/testsuite/sim/h8300/cmpw.s",
 171    "../sim/testsuite/sim/h8300/daa.s",
 172    "../sim/testsuite/sim/h8300/das.s",
 173    "../sim/testsuite/sim/h8300/dec.s",
 174    "../sim/testsuite/sim/h8300/div.s",
 175    "../sim/testsuite/sim/h8300/extl.s",
 176    "../sim/testsuite/sim/h8300/extw.s",
 177    "../sim/testsuite/sim/h8300/inc.s",
 178    "../sim/testsuite/sim/h8300/jmp.s",
 179    "../sim/testsuite/sim/h8300/ldc.s",
 180    "../sim/testsuite/sim/h8300/ldm.s",
 181    "../sim/testsuite/sim/h8300/mac.s",
 182    "../sim/testsuite/sim/h8300/mova.s",
 183    "../sim/testsuite/sim/h8300/movb.s",
 184    "../sim/testsuite/sim/h8300/movl.s",
 185    "../sim/testsuite/sim/h8300/movmd.s",
 186    "../sim/testsuite/sim/h8300/movsd.s",
 187    "../sim/testsuite/sim/h8300/movw.s",
 188    "../sim/testsuite/sim/h8300/mul.s",
 189    "../sim/testsuite/sim/h8300/neg.s",
 190    "../sim/testsuite/sim/h8300/nop.s",
 191    "../sim/testsuite/sim/h8300/not.s",
 192    "../sim/testsuite/sim/h8300/orb.s",
 193    "../sim/testsuite/sim/h8300/orl.s",
 194    "../sim/testsuite/sim/h8300/orw.s",
 195    "../sim/testsuite/sim/h8300/rotl.s",
 196    "../sim/testsuite/sim/h8300/rotr.s",
 197    "../sim/testsuite/sim/h8300/rotxl.s",
 198    "../sim/testsuite/sim/h8300/rotxr.s",
 199    "../sim/testsuite/sim/h8300/shal.s",
 200    "../sim/testsuite/sim/h8300/shar.s",
 201    "../sim/testsuite/sim/h8300/shll.s",
 202    "../sim/testsuite/sim/h8300/shlr.s",
 203    "../sim/testsuite/sim/h8300/stack.s",
 204    "../sim/testsuite/sim/h8300/stc.s",
 205    "../sim/testsuite/sim/h8300/subb.s",
 206    "../sim/testsuite/sim/h8300/subl.s",
 207    "../sim/testsuite/sim/h8300/subs.s",
 208    "../sim/testsuite/sim/h8300/subw.s",
 209    "../sim/testsuite/sim/h8300/subx.s",
 210    "../sim/testsuite/sim/h8300/tas.s",
 211    "../sim/testsuite/sim/h8300/xorb.s",
 212    "../sim/testsuite/sim/h8300/xorl.s",
 213    "../sim/testsuite/sim/h8300/xorw.s",
 214    "../sim/testsuite/sim/mips/fpu64-ps-sb1.s",
 215    "../sim/testsuite/sim/mips/fpu64-ps.s",
 216    "../sim/testsuite/sim/mips/hilo-hazard-1.s",
 217    "../sim/testsuite/sim/mips/hilo-hazard-2.s",
 218    "../sim/testsuite/sim/mips/hilo-hazard-3.s",
 219    "../sim/testsuite/sim/mips/mdmx-ob-sb1.s",
 220    "../sim/testsuite/sim/mips/mdmx-ob.s",
 221    "../sim/testsuite/sim/mips/mips32-dsp.s",
 222    "../sim/testsuite/sim/mips/mips32-dsp2.s",
 223    "../sim/testsuite/sim/mips/sanity.s",
 224    "../sim/testsuite/sim/sh/add.s",
 225    "../sim/testsuite/sim/sh/and.s",
 226    "../sim/testsuite/sim/sh/bandor.s",
 227    "../sim/testsuite/sim/sh/bandornot.s",
 228    "../sim/testsuite/sim/sh/bclr.s",
 229    "../sim/testsuite/sim/sh/bld.s",
 230    "../sim/testsuite/sim/sh/bldnot.s",
 231    "../sim/testsuite/sim/sh/bset.s",
 232    "../sim/testsuite/sim/sh/bst.s",
 233    "../sim/testsuite/sim/sh/bxor.s",
 234    "../sim/testsuite/sim/sh/clip.s",
 235    "../sim/testsuite/sim/sh/div.s",
 236    "../sim/testsuite/sim/sh/dmxy.s",
 237    "../sim/testsuite/sim/sh/fabs.s",
 238    "../sim/testsuite/sim/sh/fadd.s",
 239    "../sim/testsuite/sim/sh/fail.s",
 240    "../sim/testsuite/sim/sh/fcmpeq.s",
 241    "../sim/testsuite/sim/sh/fcmpgt.s",
 242    "../sim/testsuite/sim/sh/fcnvds.s",
 243    "../sim/testsuite/sim/sh/fcnvsd.s",
 244    "../sim/testsuite/sim/sh/fdiv.s",
 245    "../sim/testsuite/sim/sh/fipr.s",
 246    "../sim/testsuite/sim/sh/fldi0.s",
 247    "../sim/testsuite/sim/sh/fldi1.s",
 248    "../sim/testsuite/sim/sh/flds.s",
 249    "../sim/testsuite/sim/sh/float.s",
 250    "../sim/testsuite/sim/sh/fmac.s",
 251    "../sim/testsuite/sim/sh/fmov.s",
 252    "../sim/testsuite/sim/sh/fmul.s",
 253    "../sim/testsuite/sim/sh/fneg.s",
 254    "../sim/testsuite/sim/sh/fpchg.s",
 255    "../sim/testsuite/sim/sh/frchg.s",
 256    "../sim/testsuite/sim/sh/fsca.s",
 257    "../sim/testsuite/sim/sh/fschg.s",
 258    "../sim/testsuite/sim/sh/fsqrt.s",
 259    "../sim/testsuite/sim/sh/fsrra.s",
 260    "../sim/testsuite/sim/sh/fsub.s",
 261    "../sim/testsuite/sim/sh/ftrc.s",
 262    "../sim/testsuite/sim/sh/ldrc.s",
 263    "../sim/testsuite/sim/sh/loop.s",
 264    "../sim/testsuite/sim/sh/macl.s",
 265    "../sim/testsuite/sim/sh/macw.s",
 266    "../sim/testsuite/sim/sh/mov.s",
 267    "../sim/testsuite/sim/sh/movi.s",
 268    "../sim/testsuite/sim/sh/movli.s",
 269    "../sim/testsuite/sim/sh/movua.s",
 270    "../sim/testsuite/sim/sh/movxy.s",
 271    "../sim/testsuite/sim/sh/mulr.s",
 272    "../sim/testsuite/sim/sh/pabs.s",
 273    "../sim/testsuite/sim/sh/padd.s",
 274    "../sim/testsuite/sim/sh/paddc.s",
 275    "../sim/testsuite/sim/sh/pand.s",
 276    "../sim/testsuite/sim/sh/pass.s",
 277    "../sim/testsuite/sim/sh/pclr.s",
 278    "../sim/testsuite/sim/sh/pdec.s",
 279    "../sim/testsuite/sim/sh/pdmsb.s",
 280    "../sim/testsuite/sim/sh/pinc.s",
 281    "../sim/testsuite/sim/sh/pmuls.s",
 282    "../sim/testsuite/sim/sh/prnd.s",
 283    "../sim/testsuite/sim/sh/pshai.s",
 284    "../sim/testsuite/sim/sh/pshar.s",
 285    "../sim/testsuite/sim/sh/pshli.s",
 286    "../sim/testsuite/sim/sh/pshlr.s",
 287    "../sim/testsuite/sim/sh/psub.s",
 288    "../sim/testsuite/sim/sh/pswap.s",
 289    "../sim/testsuite/sim/sh/pushpop.s",
 290    "../sim/testsuite/sim/sh/resbank.s",
 291    "../sim/testsuite/sim/sh/sett.s",
 292    "../sim/testsuite/sim/sh/shll.s",
 293    "../sim/testsuite/sim/sh/shll16.s",
 294    "../sim/testsuite/sim/sh/shll2.s",
 295    "../sim/testsuite/sim/sh/shll8.s",
 296    "../sim/testsuite/sim/sh/shlr.s",
 297    "../sim/testsuite/sim/sh/shlr16.s",
 298    "../sim/testsuite/sim/sh/shlr2.s",
 299    "../sim/testsuite/sim/sh/shlr8.s",
 300    "../sim/testsuite/sim/sh/swap.s",
 301    "../sim/testsuite/sim/sh64/misc/fr-dr.s",
 302    # .inc files.  These are usually assembly or C files...
 303    "testsuite/gdb.asm/alpha.inc",
 304    "testsuite/gdb.asm/arm.inc",
 305    "testsuite/gdb.asm/common.inc",
 306    "testsuite/gdb.asm/empty.inc",
 307    "testsuite/gdb.asm/frv.inc",
 308    "testsuite/gdb.asm/h8300.inc",
 309    "testsuite/gdb.asm/i386.inc",
 310    "testsuite/gdb.asm/ia64.inc",
 311    "testsuite/gdb.asm/iq2000.inc",
 312    "testsuite/gdb.asm/m32c.inc",
 313    "testsuite/gdb.asm/m32r-linux.inc",
 314    "testsuite/gdb.asm/m32r.inc",
 315    "testsuite/gdb.asm/m68hc11.inc",
 316    "testsuite/gdb.asm/m68k.inc",
 317    "testsuite/gdb.asm/mips.inc",
 318    "testsuite/gdb.asm/netbsd.inc",
 319    "testsuite/gdb.asm/openbsd.inc",
 320    "testsuite/gdb.asm/pa.inc",
 321    "testsuite/gdb.asm/pa64.inc",
 322    "testsuite/gdb.asm/powerpc.inc",
 323    "testsuite/gdb.asm/powerpc64.inc",
 324    "testsuite/gdb.asm/s390.inc",
 325    "testsuite/gdb.asm/s390x.inc",
 326    "testsuite/gdb.asm/sh.inc",
 327    "testsuite/gdb.asm/sparc.inc",
 328    "testsuite/gdb.asm/sparc64.inc",
 329    "testsuite/gdb.asm/spu.inc",
 330    "testsuite/gdb.asm/v850.inc",
 331    "testsuite/gdb.asm/x86_64.inc",
 332    "testsuite/gdb.asm/xstormy16.inc",
 333    "../sim/testsuite/sim/arm/iwmmxt/testutils.inc",
 334    "../sim/testsuite/sim/arm/testutils.inc",
 335    "../sim/testsuite/sim/arm/thumb/testutils.inc",
 336    "../sim/testsuite/sim/arm/xscale/testutils.inc",
 337    "../sim/testsuite/sim/cr16/testutils.inc",
 338    "../sim/testsuite/sim/cris/asm/testutils.inc",
 339    "../sim/testsuite/sim/cris/hw/rv-n-cris/testutils.inc",
 340    "../sim/testsuite/sim/fr30/testutils.inc",
 341    "../sim/testsuite/sim/frv/testutils.inc",
 342    "../sim/testsuite/sim/h8300/testutils.inc",
 343    "../sim/testsuite/sim/m32r/testutils.inc",
 344    "../sim/testsuite/sim/sh/testutils.inc",
 345    "../sim/testsuite/sim/sh64/compact/testutils.inc",
 346    "../sim/testsuite/sim/sh64/media/testutils.inc",
 347    "../sim/testsuite/sim/v850/testutils.inc",
 348    )
 349
 350 # A mapping between file extensions to their associated Comment object.
 351 # This dictionary also contains a number of exceptions, based on
 352 # filename.
 353 COMMENT_MAP = \
 354   {".1" : Comment(start=r'.\"'),
 355    ".ac" : Comment(start="dnl", start2="#"),
 356    ".ads" : ADA_COMMENT,
 357    ".adb" : ADA_COMMENT,
 358    ".f" : Comment(start="c"),
 359    ".f90" : Comment(start="!"),
 360    ".gpr" : ADA_COMMENT,
 361    ".inc" : Comment(start="#", start2=";"),
 362    ".s" : Comment(start="!"),
 363    ".tex" : Comment(start="%"),
 364    ".texi" : Comment(start="@c"),
 365    ".texinfo" : Comment(start="@c"),
 366
 367    # Files that use a different way of including the copyright
 368    # header...
 369    "ada-operator.inc" : Comment(start="/*", stop="*/"),
 370    "gdbint.texinfo" : Comment(start='@copying', stop="@end copying"),
 371    "annotate.texinfo" : Comment(start='@copying', stop="@end copying",
 372                                 max_lines=50),
 373    "stabs.texinfo" : Comment(start='@copying', stop="@end copying"),
 374   }
 375
 376 class NotFound(Exception):
 377     pass
 378
 379 class AlreadyDone(Exception):
 380     pass
 381
 382 def process_header(src, dst, cdescr):
 383     """Read from SRC for up to CDESCR.MAX_LINES until we find a copyright
 384     notice.  If found, then write the entire file, with the copyright
 385     noticed updated with the current year added.
 386
 387     Raises NotFound if the copyright notice could not be found or has
 388     some inconsistencies.
 389
 390     Raises AlreadyDone if the copyright notice already includes the current
 391     year.
 392     """
 393     line_count = 0
 394     # The start-of-comment marker used for this file.  Only really useful
 395     # in the case where comments ends at the end of the line, as this
 396     # allows us to know which comment marker to use when breaking long
 397     # lines (in the cases where there are more than one.
 398     cdescr_start = ""
 399
 400     while True:
 401         # If we still haven't found a copyright line within a certain
 402         # number of lines, then give up.
 403         if line_count > cdescr.max_lines:
 404             raise NotFound("start of Copyright not found")
 405
 406         line = src.readline()
 407         line_count += 1
 408         if not line:
 409             raise NotFound("start of Copyright not found (EOF)")
 410
 411         # Is this a copyright line?  If not, then no transformation is
 412         # needed.  Write it as is, and continue.
 413         if not re.search(r"Copyright\b.*\b(199\d|20\d\d)\b", line):
 414             dst.write(line)
 415             continue
 416
 417         # If a start-of-comment marker is needed for every line, try to
 418         # figure out which one it is that is being used in this file (most
 419         # files only accept one, in which case it's easy - but some accept
 420         # two or more...).
 421         if cdescr.stop is None:
 422             stripped_line = line.lstrip()
 423             if stripped_line.startswith(cdescr.start):
 424                 cdescr_start = cdescr.start
 425             elif (cdescr.start2 is not None
 426                   and stripped_line.startswith(cdescr.start2)):
 427                 cdescr_start = cdescr.start2
 428             elif cdescr.start in stripped_line:
 429                 cdescr_start = cdescr.start
 430             elif (cdescr.start2 is not None
 431                   and cdescr.start2 in stripped_line):
 432                 cdescr_start = cdescr.start2
 433             else:
 434                 # This can't be a line with a comment, so not the copyright
 435                 # line we were looking for.  Ignore.
 436                 continue
 437
 438         comment = line
 439         break
 440
 441     while not re.search(r"Free\s+Software\s+Foundation", comment):
 442         line = src.readline()
 443         line_count += 1
 444         if not line:
 445             raise NotFound("Copyright owner not found (EOF)")
 446
 447         if cdescr.stop is None:
 448             # Expect a new comment marker at the start of each line
 449             line = line.lstrip()
 450             if not line.startswith(cdescr_start):
 451                 raise NotFound("Copyright owner not found "
 452                                "(end of comment)")
 453             comment += " " + line[len(cdescr_start):]
 454         else:
 455             if cdescr.stop in comment:
 456                 raise NotFound("Copyright owner not found "
 457                                "(end of comment)")
 458             comment += line
 459
 460     # Normalize a bit the copyright string (we preserve the string
 461     # up until "Copyright", in order to help preserve any original
 462     # alignment.
 463     (before, after) = comment.split("Copyright", 1)
 464     after = after.replace("\n", " ")
 465     after = re.sub("\s+", " ", after)
 466     after = after.rstrip()
 467
 468     # If the copyright year has already been added, the nothing else
 469     # to do.
 470     if THIS_YEAR in after:
 471         raise AlreadyDone
 472
 473     m = re.match("(.*[0-9]+)(.*)", after)
 474     if m is None:
 475         raise NotFound("Internal error - cannot split copyright line: "
 476                        "`%s'" % comment)
 477
 478     # Reconstruct the comment line
 479     comment = before + "Copyright" + m.group(1) + ', %s' % THIS_YEAR
 480     owner_part = m.group(2).lstrip()
 481
 482     # Max comment len...
 483     max_len = 76
 484
 485     # If we have to break the copyright line into multiple lines,
 486     # we want to align all the lines on the "Copyright" keyword.
 487     # Create a small "indent" string that we can use for that.
 488     if cdescr.stop is None:
 489         # The comment marker is needed on every line, so put it at the
 490         # start of our "indent" string.
 491         indent = cdescr_start + ' ' * (len(before) - len(cdescr_start))
 492     else:
 493         indent = ' ' * len(before)
 494
 495     # If the line is too long...
 496     while len(comment) > max_len:
 497         # Split the line at the first space before max_len.
 498         space_index = comment[0:max_len].rfind(' ')
 499         if space_index < 0:  # No space in the first max_len characters???
 500             # Split at the first space, then...
 501             space_index = comment.find(' ')
 502         if space_index < 0:
 503             # Still no space found.  This is extremely unlikely, but
 504             # just pretend there is one at the end of the string.
 505             space_index = len(comment)
 506
 507         # Write the first part of the string up until the space
 508         # we selected to break our line.
 509         dst.write(comment[:space_index] + '\n')
 510
 511         # Strip the part of comment that we have finished printing.
 512         if space_index < len(comment):
 513             comment = comment[space_index + 1:]
 514         else:
 515             comment = ""
 516
 517         # Prepend the "indent" string to make sure that we remain
 518         # aligned on the "Copyright" word.
 519         comment = indent + comment
 520
 521     # And finally, write the rest of the last line...  We want to write
 522     # "Free Software Foundation, Inc" on the same line, so handle this
 523     # with extra care.
 524     dst.write(comment)
 525     if len(comment) + 1 + len (owner_part) > max_len:
 526         dst.write('\n' + indent)
 527     else:
 528         dst.write(' ')
 529     dst.write(owner_part + '\n')
 530
 531 def comment_for_filename(filename):
 532     """Return the Comment object that best describes the given file.
 533     This a smart lookup of the COMMENT_MAP dictionary where we check
 534     for filename-based exceptions first, before looking up the comment
 535     by filename extension.  """
 536     # First, consult the COMMENT_MAP using the filename, in case this
 537     # file needs special treatment.
 538     basename = os.path.basename(filename)
 539     if basename in COMMENT_MAP:
 540         return COMMENT_MAP[basename]
 541     # Not a special file.  Check the file extension.
 542     ext = os.path.splitext(filename)[1]
 543     if ext in COMMENT_MAP:
 544         return COMMENT_MAP[ext]
 545     # Not a know extension either, return None.
 546     return None
 547
 548 def process_file(filename):
 549     """Processes the given file.
 550     """
 551     cdescr = comment_for_filename(filename)
 552     if cdescr is None:
 553         # Either no filename extension, or not an extension that we
 554         # know how to handle.
 555         return
 556
 557     dst_filename = filename + '.new'
 558     src = open(filename)
 559     dst = open(dst_filename, 'w')
 560     try:
 561         process_header(src, dst, cdescr)
 562     except AlreadyDone:
 563         print "+++ Already up to date: `%s'." % filename
 564         dst.close()
 565         os.unlink(dst_filename)
 566         if filename in NO_COPYRIGHT:
 567             # We expect the search for a copyright header to fail, and
 568             # yet we found one...
 569             print "Warning: `%s' should not be in NO_COPYRIGHT" % filename
 570         return
 571     except NotFound as inst:
 572         dst.close()
 573         os.unlink(dst_filename)
 574         if not filename in NO_COPYRIGHT:
 575             print "*** \033[31m%s\033[0m: %s" % (filename, inst)
 576         return
 577
 578     if filename in NO_COPYRIGHT:
 579         # We expect the search for a copyright header to fail, and
 580         # yet we found one...
 581         print "Warning: `%s' should not be in NO_COPYRIGHT" % filename
 582
 583     for line in src:
 584         dst.write(line)
 585     src.close()
 586     dst.close()
 587     os.rename(dst_filename, filename)
 588
 589 if __name__ == "__main__":
 590     if not os.path.isfile("doc/gdb.texinfo"):
 591         print "Error: This script must be called from the gdb directory."
 592     for gdb_dir in ('.', '../sim', '../include/gdb'):
 593         for root, dirs, files in os.walk(gdb_dir):
 594             for filename in files:
 595                 fullpath = os.path.join(root, filename)
 596                 if fullpath.startswith('./'):
 597                     fullpath = fullpath[2:]
 598                 if filename not in EXCLUSION_LIST and fullpath not in BY_HAND:
 599                     # Paths that start with './' are ugly, so strip that.
 600                     # This also allows us to omit them in the NO_COPYRIGHT
 601                     # list...
 602                     process_file(fullpath)
 603     print
 604     print "\033[32mREMINDER: The following files must be updated by hand." \
 605           "\033[0m"
 606     for filename in BY_HAND:
 607         print "  ", filename
 608