#compdef hg

# Zsh completion script for mercurial.  Rename this file to _hg and copy
# it into your zsh function path (/usr/share/zsh/site-functions for
# instance)
#
# Copyright (C) 2005 Steve Borho
#
# This 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.
#

local curcontext="$curcontext" state line
typeset -A opt_args
local subcmds repos tags newFiles addedFiles includeExclude

tags=($(hg tags 2> /dev/null | sed -e 's/[0-9]*:[a-f0-9]\{40\}$//; s/ *$//'))
subcmds=($(hg -v help | sed -e '1,/^list of commands:/d' \
      -e '/^global options:/,$d' -e '/^ [^ ]/!d; s/[,:].*//g;'))

# A lot of commands have these arguments
includeExclude=(
        '*-I-[include names matching the given patterns]:dir:_files -W $(hg root) -/'
        '*--include-[include names matching the given patterns]:dir:_files -W $(hg root) -/'
        '*-X-[exclude names matching the given patterns]:dir:_files -W $(hg root) -/'
        '*--exclude-[exclude names matching the given patterns]:dir:_files -W $(hg root) -/')

if [[ $service == "hg" ]]; then
    _arguments -C -A "-*" \
    '(--repository)-R[repository root directory]:root:_files -/' \
    '(-R)--repository[repository root directory]:root:_files -/' \
    '--cwd[change working directory]:new working directory:_files -/' \
    '(--noninteractive)-y[do not prompt, assume yes for any required answers]' \
    '(-y)--noninteractive[do not prompt, assume yes for any required answers]' \
    '(--verbose)-v[enable additional output]' \
    '(-v)--verbose[enable additional output]' \
    '(--quiet)-q[suppress output]' \
    '(-q)--quiet[suppress output]' \
    '(--help)-h[display help and exit]' \
    '(-h)--help[display help and exit]' \
    '--debug[debug mode]' \
    '--debugger[start debugger]' \
    '--traceback[print traceback on exception]' \
    '--time[time how long the command takes]' \
    '--profile[profile]' \
    '--version[output version information and exit]' \
    '*::command:->subcmd' && return 0

    if (( CURRENT == 1 )); then
        _wanted commands expl 'hg command' compadd -a subcmds
        return
    fi
    service="$words[1]"
    curcontext="${curcontext%:*}=$service:"
fi

case $service in
    (add)
        newFiles=(${(ps:\0:)"$(hg status -0un .)"})
        _arguments $includeExclude \
        '*:file:->unknown'
        _wanted files expl 'unknown files' compadd -a newFiles
    ;;

    (addremove)
        _arguments $includeExclude \
        '*:directories:_files -/'  # assume they want to add/remove a dir
    ;;

    (forget)
        addedFiles=(${(ps:\0:)"$(hg status -0an .)"})
        _arguments $includeExclude  \
        '*:file:->added'
        _wanted files expl 'newly added files' compadd -a addedFiles
    ;;

    (remove|rm)
        _arguments $includeExclude \
        '*:file:_files'
    ;;

    (copy|cp)
        _arguments $includeExclude \
        '(--after)-A[record a copy that has already occurred]' \
        '(-A)--after[record a copy that has already occurred]' \
        '(--force)-f[forcibly copy over an existing managed file]' \
        '(-f)--force[forcibly copy over an existing managed file]' \
        '(--parents)-p[append source path to dest]' \
        '(-p)--parents[append source path to dest]' \
        '*:files:_files'
    ;;

    (rename|mv)
        if (( CURRENT == 2 )); then
            _arguments $includeExclude \
            '(--after)-A[record a rename that has already occurred]' \
            '(-A)--after[record a rename that has already occurred]' \
            '(--force)-f[replace destination if it exists]' \
            '(-F)--force[replace destination if it exists]' \
            '(--parents)-p[append source path to dest]' \
            '(-p)--parents[append source path to dest]' \
            '*:files:_files'
        else
            _arguments '*:destination:_files'
        fi
    ;;

    (diff)
        _arguments $includeExclude \
        '*-r[revision]:revision:($tags)' \
        '*--rev[revision]:revision:($tags)' \
        '(--text)-a[treat all files as text]' \
        '(-a)--text[treat all files as text]' \
        '*:file:_files'
    ;;

    (status|st)
        _arguments $includeExclude \
        '(--no-status)-n[hide status prefix]' \
        '(-n)--no-status[hide status prefix]' \
        '(--print0)-0[end filenames with NUL, for use with xargs]' \
        '(-0)--print0[end filenames with NUL, for use with xargs]' \
        '(--modified)-m[show only modified files]' \
        '(-m)--modified[show only modified files]' \
        '(--added)-a[show only added files]' \
        '(-a)--added[show only added files]' \
        '(--removed)-r[show only removed files]' \
        '(-r)--removed[show only removed files]' \
        '(--unknown)-u[show only unknown files]' \
        '(-u)--unknown[show only unknown files]' \
        '*:search pattern, then files:_files'
    ;;

    (revert)
        addedFiles=(${(ps:\0:)"$(hg status -0amrn .)"})
        _arguments \
        '(--rev)-r[revision to revert to]:revision:($tags)' \
        '(-r)--rev[revision to revert to]:revision:($tags)' \
        '(--nonrecursive)-n[do not recurse into subdirectories]' \
        '(-n)--nonrecursive[do not recurse into subdirectories]' \
        '*:file:->modified'
        _wanted files expl 'mofified files' compadd -a addedFiles
    ;;

    (commit|ci)
        addedFiles=(${(ps:\0:)"$(hg status -0amrn .)"})
        _arguments $includeExclude \
        '(--addremove)-A[run addremove during commit]' \
        '(-A)--addremove[run addremove during commit]' \
        '(--message)-m[use <txt> as commit message]:string:' \
        '(-m)--message[use <txt> as commit message]:string:' \
        '(--logfile)-l[read commit message from <file>]:.log file:_file -g \*.txt' \
        '(-l)--logfile[read commit message from <file>]:.log file:_file -g \*.txt' \
        '(--date)-d[record datecode as commit date]:date code:' \
        '(-d)--date[record datecode as commit date]:date code:' \
        '(--user)-u[record user as commiter]:user:' \
        '(-u)--user[record user as commiter]:user:' \
        '*:file:->modified'
        _wanted files expl 'mofified files' compadd -a addedFiles
    ;;

    (cat)
        _arguments $includeExclude \
        '(--output)-o[print output to file with formatted name]:filespec:' \
        '(-o)--output[print output to file with formatted name]:filespec:' \
        '(--rev)-r[revision]:revision:($tags)' \
        '(-r)--rev[revision]:revision:($tags)' \
        '*:file:_files'
    ;;

    (annotate)
        _arguments $includeExclude \
        '(--rev)-r[annotate the specified revision]:revision:($tags)' \
        '(-r)--rev[annotate the specified revision]:revision:($tags)' \
        '(--text)-a[treat all files as text]' \
        '(-a)--text[treat all files as text]' \
        '(--user)-u[list the author]' \
        '(-u)--user[list the author]' \
        '(--changeset)-c[list the changeset]' \
        '(-c)--changeset[list the changeset]' \
        '(--number)-n[list the revision number (default)]' \
        '(-n)--number[list the revision number (default)]' \
        '*:files:_files'
    ;;

    (grep)
        _arguments $includeExclude \
        '*-r[search in given revision range]:revision:($tags)' \
        '*--rev[search in given revision range]:revision:($tags)' \
        '--all[print all revisions with matches]' \
        '(-print0)-0[end filenames with NUL, for use with xargs]' \
        '(-0)--print0[end filenames with NUL, for use with xargs]' \
        '(--ignore-case)-i[ignore case when matching]' \
        '(-i)--ignore-case[ignore case when matching]' \
        '(--files-with-matches)-l[print names of files and revs that match]' \
        '(-l)--files-with-matches[print names of files and revs that match]' \
        '(--line-number)-n[print matching line numbers]' \
        '(-n)--line-number[print matching line numbers]' \
        '(--user)-u[print user who committed change]' \
        '(-u)--user[print user who committed change]' \
        '*:search pattern:'
    ;;

    (locate)
        _arguments $includeExclude \
        '(--rev)-r[search repository as it stood at revision]:revision:($tags)' \
        '(-r)--rev[search repository as it stood at revision]:revision:($tags)' \
        '(--print0)-0[end filenames with NUL, for use with xargs]' \
        '(-0)--print0[end filenames with NUL, for use with xargs]' \
        '(--fullpath)-f[print complete paths]' \
        '(-f)--fullpath[print complete paths]' \
        '*:search pattern:'
    ;;

    (log|history)
        _arguments $includeExclude \
        '*-r[show the specified revision or range]:revision:($tags)' \
        '*--rev[show the specified revision or range]:revision:($tags)' \
        '(--no-merges -M --only-merges)-m[show only merge revisions]' \
        '(--no-merges -M -m)--only-merges[show only merge revisions]' \
        '(--only-merges -m --no-merges)-M[do not show merge revisions]' \
        '(--only-merges -m -M)--no-merges[do not show merge revisions]' \
        '(--keyword)-k[search for a keyword]:keyword:' \
        '(-k)--keyword[search for a keyword]:keyword:' \
        '(--branch)-b[show branches]' \
        '(-b)--branch[show branches]' \
        '(--patch)-p[show patch]' \
        '(-p)--patch[show patch]' \
        '*:file:_files'
    ;;

    (update|checkout|co)
        _arguments \
        '(--branch)-b[checkout the head of a specific branch]' \
        '(-b)--branch[checkout the head of a specific branch]' \
        '(-C --clean --merge)-m[allow merging of branches]' \
        '(-C --clean -m)--merge[allow merging of branches]' \
        '(-m --merge --clean)-C[overwrite locally modified files]' \
        '(-m --merge -C)--clean[overwrite locally modified files]' \
        '*:revision or tag:($tags)'
    ;;

    (tag)
        _arguments \
        '(--local)-l[make the tag local]' \
        '(-l)--local[make the tag local]' \
        '(--message)-m[message for tag commit log entry]:string:' \
        '(-m)--message[message for tag commit log entry]:string:' \
        '(--date)-d[record datecode as commit date]:date code:' \
        '(-d)--date[record datecode as commit date]:date code:' \
        '(--user)-u[record user as commiter]:user:' \
        '(-u)--user[record user as commiter]:user:' \
        '*:name, then revision:($tags)'
    ;;

    (clone)
        if (( CURRENT == 2 )); then
            repos=( $(hg paths | sed -e 's/^.*= //') )
            _arguments \
            '(--no-update)-U[do not update the new working directory]' \
            '(-U)--no-update[do not update the new working directory]' \
            '(--ssh)-e[specify ssh command to use]:string:' \
            '(-e)--ssh[specify ssh command to use]:string:' \
            '--pull[use pull protocol to copy metadata]' \
            '--remotecmd[specify hg command to run on the remote side]:remote hg:' \
            '*:local repo:_files -/'
            _wanted source expl 'source repository' compadd -a repos
        elif (( CURRENT == 3 )); then
            _arguments '*:dest repo:_files -/'
        fi
    ;;

    (rawcommit)
        _arguments \
        '(--parent)-p[parent revision]:revision:($tags)' \
        '(-p)--parent[parent revision]:revision:($tags)' \
        '(--date)-d[record datecode as commit date]:date code:' \
        '(-d)--date[record datecode as commit date]:date code:' \
        '(--user)-u[record user as commiter]:user:' \
        '(-u)--user[record user as commiter]:user:' \
        '(--message)-m[use <txt> as commit message]:string:' \
        '(-m)--message[use <txt> as commit message]:string:' \
        '(--logfile)-l[read commit message from <file>]:.log file:_file -g \*.txt' \
        '(-l)--logfile[read commit message from <file>]:.log file:_file -g \*.txt' \
        '(--files)-F[file list]:file list:_files' \
        '(-F)--files[file list]:file list:_files' \
        '*:files to commit:_files'
    ;;

    (bundle)
        if (( CURRENT == 2 )); then
            _arguments '*:changegroup file:_files -g \*.hg'
        elif (( CURRENT == 3 )); then
            _arguments '*:other repo:_files -/'
        fi
    ;;

    (unbundle)
        _arguments '*:changegroup .hg file:_files -g \*.hg'
    ;;

    (incoming)
        _arguments \
        '(--patch)-p[show patch]' \
        '(-p)--patch[show patch]' \
        '(--no-merges)-M[do not show merge revisions]' \
        '(-M)--no-merges[do not show merge revisions]' \
        '(--newest-first)-n[show newest record first]' \
        '(-n)--newest-first[show newest record first]' \
        '*:mercurial repository:_files -/'
    ;;

    (import|patch)
        _arguments \
        '(--strip)-p[directory strip option for patch (default: 1)]:count:' \
        '(-p)--strip[directory strip option for patch (default: 1)]:count:' \
        '(--force)-f[skip check for outstanding uncommitted changes]' \
        '(-f)--force[skip check for outstanding uncommitted changes]' \
        '(--base)-b[base directory to read patches from]:file:_files -W $(hg root) -/' \
        '(-b)--base[base directory to read patches from]:file:_files -W $(hg root) -/' \
        '*:patch file:_files'
    ;;

    (pull)
        repos=( $(hg paths | sed -e 's/^.*= //') )
        _arguments \
        '(--update)-u[update working directory to tip after pull]' \
        '(-u)--update[update working directory to tip after pull]' \
        '(--ssh)-e[specify ssh command to use]:ssh command:' \
        '(-e)--ssh[specify ssh command to use]:ssh command:' \
        '--remotecmd[specify hg command to run on the remote side]:remote hg:' \
        '*:local repo:_files -/'
        _wanted source expl 'source repository' compadd -a repos
    ;;

    (outgoing)
        _arguments \
        '(--patch)-p[show patch]' \
        '(-p)--patch[show patch]' \
        '(--no-merges)-M[do not show merge revisions]' \
        '(-M)--no-merges[do not show merge revisions]' \
        '(--newest-first)-n[show newest record first]' \
        '(-n)--newest-first[show newest record first]' \
        '*:local repo:_files -/'
        _wanted source expl 'source repository' compadd -a repos
    ;;

    (export)
        _arguments \
        '(--outout)-o[print output to file with formatted name]:filespec:' \
        '(-o)--output[print output to file with formatted name]:filespec:' \
        '(--text)-a[treat all files as text]' \
        '(-a)--text[treat all files as text]' \
        '*:revision:->revs'
        _wanted revs expl 'revision or tag' compadd -a tags
    ;;

    (push)
        repos=( $(hg paths | sed -e 's/^.*= //') )
        _arguments \
        '(--force)-f[force push]' \
        '(-f)--force[force push]' \
        '(--ssh)-e[specify ssh command to use]:ssh command:' \
        '(-e)--ssh[specify ssh command to use]:ssh command:' \
        '--remotecmd[specify hg command to run on the remote side]:remote hg:' \
        '*:local repo:_files -/'
        _wanted source expl 'source repository' compadd -a repos
    ;;

    (serve)
        _arguments \
        '(--accesslog)-A[name of access log file]:log file:_files' \
        '(-A)--accesslog[name of access log file]:log file:_files' \
        '(--errorlog)-E[name of error log file]:log file:_files' \
        '(-E)--errorlog[name of error log file]:log file:_files' \
        '(--port)-p[listen port]:listen port:' \
        '(-p)--port[listen port]:listen port:' \
        '(--address)-a[interface address]:interface address:' \
        '(-a)--address[interface address]:interface address:' \
        '(--name)-n[name to show in web pages]:repository name:' \
        '(-n)--name[name to show in web pages]:repository name:' \
        '(--templates)-t[web template directory]:template dir:_files -/' \
        '(-t)--templates[web template directory]:template dir:_files -/' \
        '--style[web template style]:style' \
        '--stdio[for remote clients]' \
        '(--ipv6)-6[use IPv6 in addition to IPv4]' \
        '(-6)--ipv6[use IPv6 in addition to IPv4]'
    ;;

    (help)
        _wanted commands expl 'hg command' compadd -a subcmds
    ;;

    (heads)
        _arguments \
        '(--branches)-b[find branch info]' \
        '(-b)--branches[find branch info]'
    ;;

    (paths)
        _arguments '*:symbolic name:(default default-push)'
    ;;

    (init)
        _arguments '*:new repo directory:_files -/'
    ;;

    (manifest)
        _arguments '*:revision:($tags)'
    ;;

    (parents)
        _arguments '*:revision:($tags)'
    ;;

    (identify|recover|root|undo|view|verify|version|ct|tags)
        # no arguments for these commands
    ;;

    (*)
        _message "unknown hg command completion: $service"
    ;;
esac