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+$! Compare_gawk_source.com
+$!
+$! This procedure compares the files in two directories and reports the
+$! differences.
+$!
+$! It needs to be customized to the local site directories.
+$!
+$! This is used by me for these purposes:
+$! 1. Compare the original source of a project with an existing
+$! VMS port.
+$! 2. Compare the checked out repository of a project with the
+$! the local working copy to make sure they are in sync.
+$! 3. Keep a copy directory up to date. The third is needed by
+$! me because VMS Backup can create a saveset of files from a
+$! NFS mounted volume.
+$!
+$! First the files in the original source directory which is assumed to be
+$! under source codde control are compared with the copy directory.
+$!
+$! Then the files are are only in the copy directory are listed.
+$!
+$! The result will five diagnostics about of files:
+$! 1. Files that are not generation 1.
+$! 2. Files missing in the copy directory.
+$! 3. Files in the copy directory not in the source directory.
+$! 4. Files different from the source directory.
+$! 5. Files that VMS DIFF can not process.
+$!
+$! This needs to be run on an ODS-5 volume.
+$!
+$! If UPDATE is given as a second parameter, files missing or different in the
+$! copy directory will be updated.
+$!
+$! By default:
+$! The source directory is source_root:[gawk.reference.gawk],
+$! the logical used on my system for the GNV Mecurial repository checkout.
+$! If source_root: is not defined, then src_root:[gawk] will be
+$! translated to something like DISK:[dir.gawk.reference.gawk]
+$! and then DISK:[dir.gawk.vms_source.gawk] will be used.
+$!
+$! The copy directory is vms_root:[gawk]
+$! The UPDATE parameter is ignored.
+$!
+$! This setting is used to make sure that the working vms directory
+$! and the VMS specific repository checkout directory have the same
+$! contents if they are different.
+$!
+$! If P1 is "SRCBCK" then this
+$! The source directory tree is: src_root:[gawk]
+$! The copy directory is src_root1:[gawk]
+$!
+$! src_root1:[gawk] is used by me to work around that VMS backup will
+$! not use NFS as a source directory so I need to make a copy.
+$!
+$! This is to make sure that the backup save set for the unmodified
+$! source is up to date.
+$!
+$! If your repository checkout is not on an NFS mounted volume, you do not
+$! need to use this option or have the logical name src_root1 defined.
+$!
+$! If P1 is "VMSBCK" then this changes the two directories:
+$! The source directory is vms_root:[gawk]
+$! The copy directory is vms_root1:[gawk]
+$!
+$! vms_root:
+$! src_root1:[gawk] is used by me to work around that VMS backup will
+$! not use NFS as a source directory so I need to make a copy.
+$!
+$! This is to make sure that the backup save set for the unmodified
+$! source is up to date.
+$!
+$! If your repository checkout is not on an NFS mounted volume, you do not
+$! need to use this option or have the logical name src_root1 defined.
+$!
+$! 02-Jan-2014 J. Malmberg
+$!==========================================================================
+$!
+$! Update missing/changed files.
+$update_file = 0
+$if (p2 .eqs. "UPDATE")
+$then
+$ update_file = 1
+$endif
+$!
+$myproc = f$environment("PROCEDURE")
+$myprocdir = f$parse(myproc,,,"DIRECTORY") - "[" - "]" - "<" - ">"
+$myprocdir = f$edit(myprocdir, "LOWERCASE")
+$mydefault = f$environment("DEFAULT")
+$mydir = f$parse(mydefault,,,"DIRECTORY")
+$mydir = f$edit(mydir, "LOWERCASE")
+$odelim = f$extract(0, 1, mydir)
+$mydir = mydir - "[" - "]" - "<" - ">"
+$mydev = f$parse(mydefault,,,"DEVICE")
+$!
+$ref = ""
+$if P1 .eqs. ""
+$then
+$ ref_base_dir = myprocdir - ".vms"
+$ wrk_base_dir = mydir
+$ update_file = 0
+$ resultd = f$parse("src_root:",,,,"NO_CONCEAL")
+$ resultd = f$edit(resultd, "LOWERCASE")
+$ resultd = resultd - "][" - "><" - ".;" - ".."
+$ resultd_len = f$length(resultd) - 1
+$ delim = f$extract(resultd_len, 1, resultd)
+$ ref_root_base = mydir + delim
+$ if f$locate(".reference.", resultd) .lt. resultd_len
+$ then
+$ resultd = resultd - ref_root_base - "reference." + "vms_source."
+$ else
+$ resultd = resultd - ref_root_base - "gnu." + "gnu_vms."
+$ endif
+$ ref = resultd + ref_base_dir
+$ wrk = "VMS_ROOT:" + odelim + wrk_base_dir
+$ resultd_len = f$length(resultd) - 1
+$ resultd = f$extract(0, resultd_len, resultd) + delim
+$ ref_root_dir = f$parse(resultd,,,"DIRECTORY")
+$ ref_root_dir = f$edit(ref_root_dir, "LOWERCASE")
+$ ref_root_dir = ref_root_dir - "[" - "]"
+$ ref_base_dir = ref_root_dir + "." + ref_base_dir
+$endif
+$!
+$if p1 .eqs. "SRCBCK"
+$then
+$ ref_base_dir = "gawk"
+$ wrk_base_dir = "gawk"
+$ ref = "src_root:[" + ref_base_dir
+$ wrk = "src_root1:[" + wrk_base_dir
+$ if update_file
+$ then
+$ if f$search("src_root1:[000000]gawk.dir") .eqs. ""
+$ then
+$ create/dir/prot=o:rwed src_root1:[gawk]
+$ endif
+$ endif
+$endif
+$!
+$!
+$if p1 .eqs. "VMSBCK"
+$then
+$ ref_base_dir = "gawk"
+$ wrk_base_dir = "gawk"
+$ ref = "vms_root:[" + ref_base_dir
+$ wrk = "vms_root1:[" + wrk_base_dir
+$ if update_file
+$ then
+$ if f$search("vms_root1:[000000]gawk.dir") .eqs. ""
+$ then
+$ create/dir/prot=o:rwed vms_root1:[gawk]
+$ endif
+$ endif
+$endif
+$!
+$!
+$if ref .eqs. ""
+$then
+$ write sys$output "Unknown compare type specified!"
+$ exit 44
+$endif
+$!
+$!
+$!
+$! Future - check the device types involved for the
+$! the syntax to check.
+$ODS2_SYNTAX = 0
+$NFS_MANGLE = 0
+$PWRK_MANGLE = 0
+$!
+$vax = f$getsyi("HW_MODEL") .lt. 1024
+$if vax
+$then
+$ ODS2_SYNTAX = 1
+$endif
+$!
+$report_missing = 1
+$!
+$if .not. ODS2_SYNTAX
+$then
+$ set proc/parse=extended
+$endif
+$!
+$loop:
+$ ref_spec = f$search("''ref'...]*.*;",1)
+$ if ref_spec .eqs. "" then goto loop_end
+$!
+$ ref_dev = f$parse(ref_spec,,,"DEVICE")
+$ ref_dir = f$parse(ref_spec,,,"DIRECTORY")
+$ ref_dir = f$edit(ref_dir, "LOWERCASE")
+$ ref_name = f$parse(ref_spec,,,"NAME")
+$ ref_type = f$parse(ref_spec,,,"TYPE")
+$!
+$!
+$ if f$locate(".CVS]", ref_dir) .lt. f$length(ref_dir) then goto loop
+$ if f$locate(".cvs]", ref_dir) .lt. f$length(ref_dir) then goto loop
+$ if f$locate(".$cvs]", ref_dir) .lt. f$length(ref_dir) then goto loop
+$ if f$locate(".^.git", ref_dir) .lt. f$length(ref_dir) then goto loop
+$ if f$locate(".$5ngit", ref_dir) .lt. f$length(ref_dir) then goto loop
+$!
+$ rel_path = ref_dir - "[" - ref_base_dir
+$! rel_path_len = f$length(rel_path) - 1
+$! delim = f$extract(rel_path_len, 1, rel_path)
+$! rel_path = rel_path - ".]" - ".>" - "]" - ">"
+$! rel_path = rel_path + delim
+$!
+$ if ODS2_SYNTAX
+$ then
+$ endif
+$!
+$ wrk_path = wrk + rel_path
+$!
+$ ref_name_type = ref_name + ref_type
+$!
+$ if ref_name_type .eqs. "CVS.DIR" then goto loop
+$ if ref_name_type .eqs. "cvs.dir" then goto loop
+$ if ref_name_type .eqs. "$CVS.DIR" then goto loop
+$ if ref_name_type .eqs. "^.git.DIR" then goto loop
+$ if ref_name_type .eqs. "$5ngit.DIR" then goto loop
+$ if ref_name_type .eqs. "$5NGIT.DIR" then goto loop
+$ if ODS2_SYNTAX
+$ then
+$!
+$ endif
+$!
+$ wrk_spec = wrk_path + ref_name_type
+$!
+$!
+$ wrk_chk = f$search(wrk_spec, 0)
+$ if wrk_chk .eqs. ""
+$ then
+$ if report_missing
+$ then
+$ write sys$output "''wrk_spec' is missing"
+$ endif
+$ if update_file
+$ then
+$ copy/log 'ref_spec' 'wrk_spec'
+$ endif
+$ goto loop
+$ endif
+$!
+$ wrk_name = f$parse(wrk_spec,,,"NAME")
+$ wrk_type = f$parse(wrk_spec,,,"TYPE")
+$ wrk_fname = wrk_name + wrk_type"
+$ ref_fname = ref_name + ref_type
+$!
+$ if ref_fname .nes. wrk_fname
+$ then
+$ write sys$output "''wrk_spc' wrong name, should be ""''ref_fname'"""
+$ endif
+$!
+$ ref_type = f$edit(ref_type, "UPCASE")
+$ if ref_type .eqs. ".DIR" then goto loop
+$!
+$ if ODS2_SYNTAX
+$ then
+$ ref_fname = f$edit(ref_fname, "LOWERCASE")
+$ endif
+$!
+$! These files have records to long to diff, and we don't change them anyway.
+$ ref_skip = 0
+$ if ref_type .eqs. ".GMO" then ref_skip = 1
+$ if ref_type .eqs. ".PDF" then ref_skip = 1
+$ if ref_type .eqs. ".PNG" then ref_skip = 1
+$ if ref_type .eqs. ".JPG" then ref_skip = 1
+$ if ref_fname .eqs. "inftest.ok" then ref_skip = 1
+$ if ref_fname .eqs. "longsub.in" then ref_skip = 1
+$ if ref_fname .eqs. "longsub.ok" then ref_skip = 1
+$ if ref_fname .eqs. "nasty2.ok" then ref_skip = 1
+$ if ref_fname .eqs. "profile5.awk" then ref_skip = 1
+$ if ref_fname .eqs. "profile5.ok" then ref_skip = 1
+$ if ref_fname .eqs. "po.m4" then ref_skip = 1
+$!
+$!
+$ if ref_skip .ne. 0
+$ then
+$ if report_missing
+$ then
+$ write sys$output "Skipping diff of ''ref_fname'"
+$ endif
+$ goto loop
+$ endif
+$!
+$!
+$ wrk_ver = f$parse(wrk_chk,,,"VERSION")
+$ if wrk_ver .nes. ";1"
+$ then
+$ write sys$output "Version for ''wrk_spec' is not 1"
+$ endif
+$ set noon
+$ diff/out=nl: 'wrk_spec' 'ref_spec'
+$ if $severity .nes. "1"
+$ then
+$ write sys$output "''wrk_spec' is different from ''ref_spec'"
+$ if update_file
+$ then
+$ delete 'wrk_spec';*
+$ copy/log 'ref_spec' 'wrk_spec'
+$ endif
+$ endif
+$ set on
+$
+$!
+$ goto loop
+$loop_end:
+$!
+$!
+$missing_loop:
+$! For missing loop, check the latest generation.
+$ ref_spec = f$search("''wrk'...]*.*;")
+$ if ref_spec .eqs. "" then goto missing_loop_end
+$!
+$ ref_dev = f$parse(ref_spec,,,"DEVICE")
+$ ref_dir = f$parse(ref_spec,,,"DIRECTORY")
+$ ref_dir = f$edit(ref_dir, "LOWERCASE")
+$ ref_name = f$parse(ref_spec,,,"NAME")
+$ ref_type = f$parse(ref_spec,,,"TYPE")
+$!
+$ rel_path = ref_dir - "[" - wrk_base_dir
+$!
+$!
+$ wrk_path = ref + rel_path
+$ wrk_spec = wrk_path + ref_name + ref_type
+$ wrk_name = f$parse(wrk_spec,,,"NAME")
+$ wrk_type = f$parse(wrk_spec,,,"TYPE")
+$!
+$ wrk_fname = wrk_name + wrk_type"
+$ ref_fname = ref_name + ref_type
+$!
+$ wrk_skip = 0
+$ ref_utype = f$edit(ref_type,"UPCASE")
+$ ref_ufname = f$edit(ref_fname,"UPCASE")
+$!
+$!
+$ if wrk_skip .eq. 0
+$ then
+$ wrk_chk = f$search(wrk_spec, 0)
+$ if wrk_chk .eqs. ""
+$ then
+$ if report_missing
+$ then
+$ write sys$output "''wrk_spec' is missing"
+$ endif
+$ goto missing_loop
+$ endif
+$ else
+$ goto missing_loop
+$ endif
+$!
+$ if ref_fname .nes. wrk_fname
+$ then
+$ write sys$output "''wrk_spc' wrong name, should be ""''ref_fname'"""
+$ endif
+$!
+$ if ref_utype .eqs. ".DIR" then goto missing_loop
+$!
+$ wrk_ver = f$parse(wrk_chk,,,"VERSION")
+$ if wrk_ver .nes. ";1"
+$ then
+$ write sys$output "Version for ''wrk_spec' is not 1"
+$ endif
+$!
+$ goto missing_loop
+$!
+$!
+$missing_loop_end:
+$!
+$exit