OS/2 Shareware BBS: 10 Tools/10-Tools.zip/cvs110.zip/cvs/scripts/loginfo.cmd

OS/2 REXX Batch file | 1998-08-21 | 25KB | 928 lines

/*
** $Id: loginfo.cmd,v 1.1.2.4 1998/08/01 16:24:23 ahuber Exp $
**
** Rexx filter to handle the log messages from the checkin of files in
** a directory. This script will group the lists of files by log message,
** and mail a single consolidated log message at the end of the commit.
**
** This file assumes a pre-commit checking program that leaves the names
** of the first and last commit directories in a temporary file.
**
** Commit messages are sent to the email addresses listed in the
** %CVSROOT%\maildist file on a per directory basis. This file also lists
** the names of files within %CVSROOT%\commitlogs to save commit messages
** to.
**
** The file %HOME%\.cvsauthors or %ETC%\.cvsauthors contains a list of
** all known login names and their corresponding full names and email
** addresses. This information is used determine the 'From:' address for
** commit messages.
**
** Usage: loginfo [-?dbS] [-i infolevel] [-a authors] repository files...
**
** Options:
**  -?            Display usage information.
**  -i infolevel  Include RCS ID and delta info:
**                 0: never,
**                 1: in mail only,
**                 2: in mail and logs (default).
**  -d            Enable debugging.
**  -b            Backup commitlogs on a monthly basis (requires gzip).
**  -a authors    Specify a different path for '.cvsauthors'.
**  -S            Do *not* include change summary.
**
** Originally by David Hampton <[e-mail]>.
**
** Extensively hacked for FreeBSD by Peter Wemm <[e-mail]>,
** with parts stolen from Greg A. Woods' <[e-mail]> version.
**
** Copyright (C) 1998  Andreas Huber <[e-mail]>
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License
** as published by the Free Software Foundation; either version 2
** of the License, or (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; see the file COPYING. If not, write to
** the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
** Boston, MA 02111-1307, USA.
*/
call RxFuncAdd 'SysLoadFuncs', 'RexxUtil', 'SysLoadFuncs'
call SysLoadFuncs

/*
** Constants.
*/
EXIT_SUCCESS    = 0
EXIT_FAILURE    = 1
EXIT_SIGNAL        = 3

FALSE            = 0
TRUE            = \FALSE

TAB                = d2c(9)

STATE_NONE        = 0
STATE_CHANGED    = 1
STATE_ADDED        = 2
STATE_REMOVED    = 3
STATE_LOG        = 4

TEMP_DIR        = value('TMPDIR',, 'OS2ENVIRONMENT')

FILE_PREFIX        = '#cvs.files'
LAST_FILE        = TEMP_DIR||'/'||FILE_PREFIX||'.lastdir'
CHANGED_FILE    = TEMP_DIR||'/'||FILE_PREFIX||'.changed'
ADDED_FILE        = TEMP_DIR||'/'||FILE_PREFIX||'.added'
REMOVED_FILE    = TEMP_DIR||'/'||FILE_PREFIX||'.removed'
LOG_FILE        = TEMP_DIR||'/'||FILE_PREFIX||'.log'
SUMMARY_FILE    = TEMP_DIR||'/'||FILE_PREFIX||'.summary'
MAIL_FILE        = TEMP_DIR||'/'||FILE_PREFIX||'.mail'
SUBJ_FILE        = TEMP_DIR||'/'||FILE_PREFIX||'.subj'

CVSROOT            = get_repository()

/*
** Configurable options.
**
** Where do you want the RCS ID and delta info?
** 0 = none,
** 1 = in mail only,
** 2 = RCS IDs in both mail and logs.
*/
rcsidinfo        = 2

/*
** Debug level, 0 = off.
*/
debug            = 0

/*
** Backup commit logs in %CVSROOT%\CVSROOT\commitlogs\ on a monthly
** basis (requires gzip).
*/
backup            = FALSE

/*
** Look for full names and email addresses in this file. The default
** is %ETC%\.cvsauthors or %HOME%\.cvsauthors.
*/
cvsauthors        = ''

/*
** Include a change summary with the commit message.
*/
include_summary    = TRUE

/*
** Global names known to all procedures.
*/
globals = 'EXIT_SUCCESS EXIT_FAILURE EXIT_SIGNAL',
    'FALSE TRUE argc argv. TAB',
    'STATE_NONE STATE_CHANGED STATE_ADDED STATE_REMOVED STATE_LOG',
    'TEMP_DIR FILE_PREFIX LAST_FILE CHANGED_FILE ADDED_FILE',
    'REMOVED_FILE LOG_FILE SUMMARY_FILE MAIL_FILE SUBJ_FILE',
    'CVSROOT rcsidinfo debug backup cvsauthors id'

/*
** Main body.
*/
main:
/*
** Initialize basic variables.
*/
    argc = 1; argv. = ''; argv.0 = 'loginfo'
    signal on halt name signal_handler
    do i = 1 to arg(); call setargv arg(i); end
    optind = 0
    options = '?id::ba::S'
    do forever
        c = getopt(options)
        if c <= 0 then leave
        select
            when c = '?' | c = ':' then call usage
            when c = 'i' then rcsidinfo = numeric_argument(0, 2)
            when c = 'd' then debug = TRUE
            when c = 'b' then backup = TRUE
            when c = 'a' then cvsauthors = optarg
            when c = 'S' then include_summary = FALSE
            otherwise exit EXIT_FAILURE
        end
    end
    id = SysGetPPid()
    state = STATE_NONE
    tag = ''
    login = value('LOGNAME',, 'OS2ENVIRONMENT')
    if login = '' then
        login = value('USER',, 'OS2ENVIRONMENT')
    path = argv.optind; optind = optind+1
    files = ''
    do while optind < argc
        files = concat(files, argv.optind, ' ')
        optind = optind+1
    end
    parse var path modulename '/' dir
    if dir = '' then dir = '.'
    dir = dir||'/'

    call append_line MAIL_FILE||'.'||id, read_maildist(path)
    call append_line SUBJ_FILE||'.'||id, path files
/*
** Check for a new directory first. This will always appear as a
** single item in the argument list, and an empty log message.
*/
    if pos('- New directory', files) = 1 then do
        header = build_header()
        text. = ''; text.0 = 0
        call push header
        call push ''
        call push '  '||path files
        call do_changes_file
        call mail_notification login
        call cleanup_tmpfiles
        exit EXIT_SUCCESS
    end
/*
** Check for an import command. This will always appear as a
** single item in the argument list, and a log message.
*/
    if pos('- Imported sources', files) = 1 then do
        header = build_header()
        text. = ''; text.0 = 0
        call push header
        call push ''
        call push '  '||path files
        call push ''
        call push '  Log:'
        i = text.0
        do while lines() > 0
            call push '  '||linein()
        end
        call compress_log i
        call do_changes_file
        call mail_notification login
        call cleanup_tmpfiles
        exit EXIT_SUCCESS
    end
/*
** Iterate over the body of the message collecting information.
*/
    tag = 'HEAD'
    call init_state STATE_CHANGED
    call init_state STATE_ADDED
    call init_state STATE_REMOVED
    text. = ''; text.0 = 0
    do while lines() > 0
        line = strip(translate(linein(), ' ', TAB), 't')
        if pos('Revision/Branch:', line) = 1 then do
            parse var line . ':' tag
            iterate
        end
        if word(line, 1) = 'Tag:' then do
            parse var line . ': ' tag
            iterate
        end
        if strip(line, 'l') = 'No tag' then do
            tag = 'HEAD'
            iterate
        end
        if pos('Modified Files', line) = 1 then do
            state = STATE_CHANGED
            iterate
        end
        if pos('Added Files', line) = 1 then do
            state = STATE_ADDED
            iterate
        end
        if pos('Removed Files', line) = 1 then do
            state = STATE_REMOVED
            iterate
        end
        if pos('Log Message', line) = 1 then do
            state = STATE_LOG
            iterate
        end
        if state = STATE_LOG then do
            temp = translate(line)
            if temp = 'PR:' |,
                temp = 'REVIEWED BY:' |,
                temp = 'SUBMITTED BY:' |,
                temp = 'OBTAINED FROM:' then iterate
            call push line
        end
        else if state \= STATE_NONE then
            call push_tag state, tag, line
    end
/*
** Skip leading and trailing blank lines from the log message. Also
** compress multiple blank lines in the body of the message down to a
** single blank line.
** (Note, this only does the mail and changes log, not the rcs log),
*/
    call compress_log
/*
** Find the log that matches this log message.
*/
    do i = 0
        if \exists(LOG_FILE||'.'||i||'.'||id) then leave
        call read_logfile LOG_FILE||'.'||i||'.'||id, ''
        if lines.0 = 0 then leave
        if compare_log() then leave
    end
/*
** Spit out the information gathered in this pass.
*/
    filename = ADDED_FILE||'.'||i||'.'||id
    call append_state_to_file filename, dir, STATE_ADDED

    filename = CHANGED_FILE||'.'||i||'.'||id
    call append_state_to_file filename, dir, STATE_CHANGED

    filename = REMOVED_FILE||'.'||i||'.'||id
    call append_state_to_file filename, dir, STATE_REMOVED

    call write_logfile LOG_FILE||'.'||i||'.'||id

    if rcsidinfo \= 0 & include_summary then do
        filename = SUMMARY_FILE||'.'||i||'.'||id
        tags = states.STATE_ADDED.keys
        do i = 1 to words(tags)
            call change_summary_added filename, word(tags, i)
        end
        tags = states.STATE_CHANGED.keys
        do i = 1 to words(tags)
            call change_summary_changed filename, word(tags, i)
        end
        tags = states.STATE_REMOVED.keys
        do i = 1 to words(tags)
            call change_summary_removed filename, word(tags, i)
        end
    end
/*
** Check wether this is the last directory. If not, quit.
*/
    if exists(LAST_FILE||'.'||id) then do
        line = read_line(LAST_FILE||'.'||id)
        if right(line, length(path)) \= path then do
            say 'More commits to come...'
            exit 0
        end
    end
/*
** This is it. The commits are all finished. Lump everthing together
** into a single message, fire a copy off to the mailing list, and drop
** it on the end of the Changes file.
*/
    header = build_header()
/*
** Produce the final compilation of the log messages.
*/
    text. = ''; text.0 = 0
    call push header
    call push ''
    do i = 0
        if \exists(LOG_FILE||'.'||i||'.'||id) then leave
        call read_logfile CHANGED_FILE||'.'||i||'.'||id, ''
        if lines.0 > 0 then
            call format_lists 'Modified'
        call read_logfile ADDED_FILE||'.'||i||'.'||id, ''
        if lines.0 > 0 then
            call format_lists 'Added'
        call read_logfile REMOVED_FILE||'.'||i||'.'||id, ''
        if lines.0 > 0 then
            call format_lists 'Removed'
        call read_logfile LOG_FILE||'.'||i||'.'||id, '  '
        if lines.0 > 0 then do
            call push '  Log:'
            call push_lines
        end
        if rcsidinfo = 2 & exists(SUMMARY_FILE||'.'||i||'.'||id) then do
            call push '  '
            call push '  Revision  Changes    Path'
            call read_logfile SUMMARY_FILE||'.'||i||'.'||id, '  '
            call push_lines
        end
        call push ''
    end
/*
** Put the log message at the beginning of the Changes file.
*/
    call do_changes_file
/*
** Now generate the extra info for the mail message.
*/
    if rcsidinfo = 1 then do
        revhdr = 0
        do i = 0
            if \exists(LOG_FILE||'.'||i||'.'||id) then leave
            if exists(SUMMARY_FILE||'.'||i||'.'||id) then do
                if revhdr = 0 then
                    call push 'Revision  Changes    Path'
                call read_logfile SUMMARY_FILE||'.'||i||'.'||id, ''
                call push_lines
                revhdr = revhdr+1
            end
        end
        if revhdr > 0 then
            call push ''
    end
/*
** Mail out the notification.
*/
    call mail_notification login
    call cleanup_tmpfiles
    exit EXIT_SUCCESS
/*
** Subroutines.
*/
die: procedure expose (globals)
    parse arg text
    call lineout 'stderr:', argv.0||': '||text
    exit EXIT_FAILURE

push: procedure expose text.
    parse arg line
    i = text.0+1
    text.i = line
    text.0 = i
    return

/*
** Mail distribution and commit log mapping.
*/
read_maildist: procedure expose (globals)
    parse arg dir
    filename = CVSROOT||'/CVSROOT/maildist'
    if stream(filename, 'c', 'open read') \= 'READY:' then
        return ''
    default_dist = ''; all_dist = ''; mail_dist = ''
    do while lines(filename) > 0
        line = space(translate(linein(filename), '  ', ','||TAB))
        if left(line, 1) = '#' then iterate
        parse var line prefix dist
        if prefix = '' | dist = '' then iterate
        if prefix = 'DEFAULT' then
            default_dist = concat(default_dist, dist, ' ')
        else if prefix = 'ALL' then
            all_dist = concat(all_dist, dist, ' ')
        else if is_prefix(prefix, dir) then
            mail_dist = concat(mail_dist, dist, ' ')
    end
    call stream filename, 'c', 'close'
    if mail_dist = '' then
        mail_dist = concat(all_dist, default_dist, ' ')
    else
        mail_dist = concat(all_dist, mail_dist, ' ')
    return mail_dist

concat: procedure
    parse arg s1, s2, sep
    if s1 = '' then return s2
    if s2 = '' then return s1
    return s1||sep||s2

is_prefix: procedure expose (globals)
    parse arg prefix, dir
    if prefix = dir then return TRUE
    if length(prefix) >= length(dir) then return FALSE
    parse var dir (prefix) '/' dir
    return dir \= ''

append_line: procedure expose (globals)
    parse arg filename, line
    if stream(filename, 'c', 'open write') \= 'READY:' then
        call die 'Cannot open for append file '||filename||'.'
    call lineout filename, line
    call stream filename, 'c', 'close'
    return

build_header: procedure expose login
    date = insert('/', insert('/', date('s'), 4), 7)
    time = time('n')
    return left(login, 8)||'    '||date||' '||time

do_changes_file: procedure expose (globals) text.
    parse arg
    call read_logfile MAIL_FILE||'.'||id, ''
    unique. = FALSE
    do i = 1 to lines.0
        do j = 1 to words(lines.i)
            category = word(lines.i, j)
            if pos('@', category) > 0 then iterate
            if unique.category then iterate
            unique.category = TRUE
            changes = CVSROOT||'/CVSROOT/commitlogs/'||category
            if backup then
                call backup_changes changes
            call stream changes, 'c', 'open write'
            do k = 1 to text.0
                call lineout changes, text.k
            end
            call lineout changes, ''
            call stream changes, 'c', 'close'
        end
    end
    return

backup_changes: procedure expose (globals)
    parse arg filename
    parse value stream(filename, 'c', 'query datetime') with,
        m '-' . '-' y ' '
    if m \= '' & y \= '' then if m \= substr(date('s'), 5, 2) then do
        if y >= 70 then y = 1900+y; else y = 2000+y
        filename = translate(filename, '\', '/')
        '@rename' filename filename||'.'||y||'-'||m '>nul'
        if rc = 0 then
            '@gzip -q' filename||'.'||y||'-'||m '>nul'
        if rc \= 0 then
            call lineout 'stderr:', argv.0||': Warning:',
                'Couldn''t backup "'||filename||'".'
    end
    return

read_logfile: procedure expose lines.
    parse arg filename, leader
    lines. = ''; lines.0 = 0
    call stream filename, 'c', 'open read'
    i = 0
    do while lines(filename) > 0
        i = i+1
        lines.i = leader||linein(filename)
    end
    lines.0 = i
    call stream filename, 'c', 'close'
    return

cleanup_tmpfiles: procedure expose (globals)
    filemask = TEMP_DIR||'/'||FILE_PREFIX||'.*.'||id
    call SysFileTree translate(filemask, '\', '/'),,
        'files', 'FO', '*----'
    do i = 1 to files.0
        call SysFileDelete files.i
    end
    return

init_state: procedure expose states.
    parse arg state
    call value 'states.'||state||'.keys', ''
    return

init_tag: procedure expose states.
    parse arg state, tag
    call value 'states.'||state||'.'||tag||'.', ''
    call value 'states.'||state||'.'||tag||'.0', 0
    return

push_tag: procedure expose states.
    parse arg state, tag, line
    tags = value('states.'||state||'.keys')
    if wordpos(tag, tags) = 0 then do
        tags = tags||' '||tag
        call init_tag state, tag
        call value 'states.'||state||'.keys', tags
    end
    n = value('states.'||state||'.'||tag||'.0')
    do i = 1 to words(line)
        n = n+1
        call value 'states.'||state||'.'||tag||'.'||n, word(line, i)
    end
    call value 'states.'||state||'.'||tag||'.0', n
    return

exists: procedure
    parse arg filename
    return stream(filename, 'c', 'query size') \= ''

compare_log: procedure expose text. lines.
    if text.0 \= lines.0 then return 0
    do i = 1 to text.0
        if text.i \= lines.i then return 0
    end
    return 1

compress_log: procedure expose text.
    offset = 0
    if arg(1, 'e') then parse arg offset
    i = text.0
    do while i > offset & text.i = ''; i = i-1; end
    text.0 = i
    i = offset+1
    if left(text.i, 1) = '{' then do
        p = verify(text.i, ' }'||TAB, 'm')
        if substr(text.i, p, 1) = '}' then do
            text.i = substr(text.i,,
                p+verify(substr(text.i, p+1), ' '||TAB))
        end
    end
    do while i <= text.0 & text.i = ''; i = i+1; end
    j = offset
    do while i <= text.0
        j = j+1
        text.j = text.i
        if text.i \= '' then do; i = i+1; iterate; end
        i = i+1
        do while i <= text.0 & text.i = ''; i = i+1; end
    end
    text.0 = j
    return

append_state_to_file: procedure expose (globals) states.
    parse arg filename, dir, state
    tags = value('states.'||state||'.keys')
    do i = 1 to words(tags)
        call append_names_to_file filename, dir, word(tags, i), state
    end
    return

append_names_to_file: procedure expose (globals) states.
    parse arg filename, dir, tag, state
    n = value('states.'||state||'.'||tag||'.0')
    if n > 0 then do
        if stream(filename, 'c', 'open write') \= 'READY:' then
            call die 'Cannot open for append file '||filename||'.'
        call lineout filename, dir
        call lineout filename, tag
        do i = 1 to n
            call lineout filename,,
                value('states.'||state||'.'||tag||'.'||i)
        end
        call stream filename, 'c', 'close'
    end
    return

write_logfile: procedure expose (globals) text.
    parse arg filename
    call SysFileDelete translate(filename, '\', '/')
    if stream(filename, 'c', 'open write') \= 'READY:' then
        call die 'Cannot open for write log file '||filename||'.'
    do i = 1 to text.0
        call lineout filename, text.i
    end
    call stream filename, 'c', 'close'
    return

/*
** Write these one day.
*/
change_summary_removed: procedure expose (globals) states.
    parse arg filename, tag
    return

change_summary_added: procedure expose (globals) states.
    parse arg filename, tag
    return

/*
** Do an 'cvs -Qn status' on each file in the arguments,
** and extract info.
*/
change_summary_changed: procedure expose (globals) states.
    parse arg filename, tag
    queue = rxqueue('create')
    call rxqueue 'set', queue
    do i = 1 to value('states.STATE_CHANGED.'||tag||'.0')
        file = value('states.STATE_CHANGED.'||tag||'.'||i)
        if file = '' then iterate
        'cvs -Qn status '||file||' | rxqueue '||queue
        rev = ''
        delta = ''
        rcsfile = ''
        do while queued() > 0
            line = space(translate(linein('queue:'), ' ', TAB))
            if pos('Repository revision:', line) = 1 then
                parse var line . ': ' rev ' ',
                    (CVSROOT) '/' rcsfile ',v'
        end
        if rev \= '' & rcsfile \= '' then do
            'cvs -Qn log -N -r'||rev||' '||file||' | rxqueue '||queue
            do while queued() > 0
                line = linein('queue:')
                if pos('date:', line) = 1 then
                    parse var line . 'lines:' delta
            end
        end
        call append_line filename, left(rev, 9)||left(delta, 12)||rcsfile
    end
    call rxqueue 'delete', queue
    return

read_line: procedure expose (globals)
    parse arg filename
    if stream(filename, 'c', 'open read') \= 'READY:' then
        call die 'Cannot open for read file '||filename||'.'
    line = linein(filename)
    call stream filename, 'c', 'close'
    return line

push_lines: procedure expose text. lines.
    do i = 1 to lines.0
        call push lines.i
    end
    return

format_lists: procedure expose lines. text.
    parse arg header
    files. = ''; files.0 = 0
    lastdir = ''
    lastsep = ''
    do i = 1 to lines.0
        if right(lines.i, 1) = '/' then do
            if lastdir \= '' then
                  call format_names lastdir
            lastdir = lines.i
            tag = ''
            files. = ''; files.0 = 0
        end
        else if tag = '' then do
            tag = lines.i
            if header||tag = lastsep then iterate
            lastsep = header||tag
            if tag = 'HEAD' then
                call push '  '||header||' files:'
            else
                call push '  '||left(header||' files:', 22)||,
                    ' (Branch: '||tag||')'
        end
        else do
            n = files.0+1
            files.n = lines.i
            files.0 = n
        end
    end
    call format_names lastdir
    return

format_names: procedure expose files. text.
    parse arg dir
    indent = length(dir)
    if indent < 20 then
        indent = 20
    line = '    '||left(dir, indent)
    do i = 1 to files.0
        if length(line)+length(files.i) > 66 then do
            call push line
            line = '    '||left('', indent)
        end
        line = line||' '||files.i
    end
    call push line
    return

mail_notification: procedure expose (globals) text.
    parse arg login
    from = read_author(login)
    call read_logfile MAIL_FILE||'.'||id, ''
    to = ''
    unique. = FALSE
    do i = 1 to lines.0
        do j = 1 to words(lines.i)
            word = word(lines.i, j)
            if pos('@', word) = 0 then iterate
            if unique.word then iterate
            unique.word = TRUE
            to = concat(to, word, ' ')
        end
    end
    if to = '' then return
    say 'Mailing the commit message...'
    filename = translate(TEMP_DIR||'/cvs-mail.?????', '\', '/')
    filename = SysTempFileName(filename)
    call stream filename, 'c', 'open write'
    call lineout filename, 'From:' from
    call lineout filename, 'To:' word(to, 1)
    if words(to) > 1 then
        call lineout filename, 'Bcc:' space(subword(to, 2),, ',')
    subject = 'Subject: cvs commit:'
    call read_logfile SUBJ_FILE||'.'||id, ''
    subjlines = 0; subjwords = 0
    do i = 1 to lines.0
        line = lines.i
        do j = 1 to words(line)
            if subjwords > 2 &,
                    length(subject||' '||word(line, j)) > 75 then do
                if subjlines > 2 then
                    subject = subject||' ...'
                call lineout filename, subject
                if subjlines > 2 then do
                    subject = ''
                    leave i
                end
                subject = '        '
                subjwords = 0
                subjlines = subjlines+1
            end
            subject = subject||' '||word(line, j)
            subjwords = subjwords+1
        end
    end
    if subject \= '' then
        call lineout filename, subject
    call lineout filename, ''
    do i = 1 to text.0
        call lineout filename, text.i
    end
    call stream filename, 'c', 'close'
    '@sendmail -odb -oem -t -a' filename
    call SysFileDelete translate(filename, '\', '/')
    return

find_authors: procedure expose (globals)
    parse arg env
    dir = value(env,, 'OS2ENVIRONMENT')
    if dir \= '' then if exists(dir||'/.cvsauthors') then
        return dir||'/.cvsauthors'
    return ''

read_author: procedure expose (globals)
    parse arg login
    filename = cvsauthors
    if filename = '' then do
        filename = find_authors('HOME')
        if filename = '' then
            filename = find_authors('ETC')
    end
    mailaddr = ''
    if filename \= '' then do
        if stream(filename, 'c', 'open read') \= 'READY:' then
            call die 'Cannot open' filename 'for reading.'
        do while lines(filename) > 0
            line = linein(filename)
            parse var line (login) '|' fullname '|' mailaddr
            if mailaddr \= '' then leave
        end
        call stream filename, 'c', 'close'
    end
    if mailaddr \= '' then do
        if fullname = '' then
            from = mailaddr
        else
            from = '"'||fullname||'" <'||mailaddr||'>'
    end
    else
        from = login||'@'||get_hostname()
    return from

get_hostname: procedure expose (globals)
    hostname = value('HOSTNAME',, 'OS2ENVIRONMENT')
    if hostname \= '' then return hostname
    queue = rxqueue('create')
    call rxqueue 'set', queue
    'hostname | rxqueue '||queue
    if rc = 0 then if lines('queue:') > 0 then
        hostname = linein('queue:')
    call rxqueue 'delete', queue
    if hostname = '' then
        hostname = 'localhost'
    return hostname

get_repository: procedure
    cvsroot = value('CVSROOT',, 'OS2ENVIRONMENT')
    if left(cvsroot, 1) = ':' then
        parse var cvsroot ':' method ':' cvsroot
    else if pos(cvsroot, ':') = 0 then
        method = 'local'
    else
        method = 'server'
    if method \= 'local' then
        parse var cvsroot . ':' cvsroot
    return cvsroot

usage: procedure expose (globals)
    say 'Usage: '||argv.0||' [-?dbS] [-i infolevel] [-a authors]',
        'repository files...'
    exit EXIT_USAGE

numeric_argument: procedure expose (globals) optopt optarg
    parse arg minval, maxval
    if \datatype(optarg, 'w') then
        call die '-'||optopt optarg||': invalid argument.'
    if optarg < minval | optarg > maxval then
        call die '-'||optopt optarg||': argument out of range',
            '['||minval||', '||maxval||'].'
    return optarg

getopt: procedure expose (globals) optind optarg optopt optptr
    parse arg options
    if optind = 0 then optptr = 0
    if optptr = 0 | optptr > length(argv.optind) then do
        if optind >= argc then return -1
        optind = optind+1
        optptr = 1
        if substr(argv.optind, optptr, 1) \= '-' then return 0
        optptr = optptr+1
    end
    optopt = substr(argv.optind, optptr, 1)
    optptr = optptr+1
    if optopt = '-' then do
        optind = optind+1
        optptr = 0
        return -1
    end
    i = pos(optopt, options)
    if optopt = ':' | i = 0 then do
        say argv.0||': -'||optopt||' is not a valid option.'
        return '?'
    end
    if substr(options, i+1, 1) = ':' then do
        if optptr <= length(argv.optind) then do
            optarg = substr(argv.optind, optptr)
            optptr = 0
            return optopt;
        end
        if substr(options, i+2, 1) = ':' then do
            i = optind+1
            optptr = 1
            if i < argc & substr(argv.i, optptr, 1) \= '-' then do
                optind = i
                optarg = argv.optind
                optptr = 0
                return optopt
            end
            say argv.0||': -'||optopt||' is missing an argument.'
            return ':'
        end
        optptr = 0
    end
    optarg = ''
    return optopt

setargv: procedure expose (globals)
    parse arg args
    inquote = FALSE
    do forever
        parse var args arg args
        if arg = '' then leave
        quotes = FALSE
        i = 1
        do forever
            i = pos('"', arg, i)
            if i = 0 then leave
            if i > 1 then if substr(arg, i-1, 1) = '\' then do
                arg = delstr(arg, i-1, 1)
                iterate
            end
            arg = delstr(arg, i, 1)
            quotes = \quotes
        end
        if inquote then
            argv.argc = argv.argc arg
        else do
            argv.argc = arg
            argc = argc+1
        end
        if quotes then inquote = \inquote
    end
    return

signal_handler:
    call lineout 'stderr:', argv.0||': terminated by SIGINT.'
    call cleanup_tmpfiles
    exit EXIT_SIGNAL