+function! s:NM_show_next(can_change_thread, find_matching)
+ let info = b:nm_raw_info
+ let lnum = line('.')
+ for msg in info['msgs']
+ if a:find_matching && msg['match'] == '0'
+ continue
+ endif
+ if lnum >= msg['start']
+ continue
+ endif
+
+ exec printf('norm %dGzt', msg['start'])
+ " TODO: try to fit the message on screen
+ return
+ endfor
+ if a:can_change_thread
+ call <SID>NM_show_next_thread()
+ endif
+endfunction
+
+function! s:NM_show_next_thread()
+ call <SID>NM_kill_this_buffer()
+ if line('.') != line('$')
+ norm j
+ call <SID>NM_search_show_thread()
+ else
+ echo 'No more messages.'
+ endif
+endfunction
+
+function! s:NM_show_archive_thread()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_mark_read_then_archive_thread()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_mark_read_then_next_open_message()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_previous_message()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_reply()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_view_all_mime_parts()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_view_raw_message()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_add_tag()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_remove_tag()
+ echo 'not implemented'
+endfunction
+
+" if entire message is not visible scroll down 1/2 page or less to get to the bottom of message
+" otherwise go to next message
+" any message that is viewed entirely has inbox and unread tags removed
+function! s:NM_show_advance_marking_read_and_archiving()
+ let advance_tags = ['unread', 'inbox']
+
+ let vis_top = line('w0')
+ let vis_bot = line('w$')
+
+ let msg_top = <SID>NM_show_get_message_for_line(vis_top)
+ if !has_key(msg_top,'id')
+ echo "No top visible message."
+ endif
+
+ " if the top message is the last message, just expunge the entire thread and move on
+ if msg_top['end'] == line('$')
+ let ids = []
+ for msg in b:nm_raw_info['msgs']
+ if has_key(msg,'match') && msg['match'] != '0'
+ if len(ids)
+ call add(ids, 'OR')
+ endif
+ call add(ids, msg['id'])
+ endif
+ endfor
+
+ let filter = ['('] + advance_tags + [')', 'AND', '('] + ids + [')']
+ call <SID>NM_add_remove_tags(filter, '-', advance_tags)
+ call <SID>NM_show_next(1, 1)
+ return
+ endif
+
+ let msg_bot = <SID>NM_show_get_message_for_line(vis_bot)
+ if !has_key(msg_bot,'id')
+ echo "No bottom visible message."
+ endif
+
+ " if entire message fits on the screen, read/archive it, move to the next one
+ if msg_top['id'] != msg_bot['id'] || msg_top['end'] <= vis_bot
+ call <SID>NM_add_remove_tags_on_screen(msg_top['start'], '-', advance_tags)
+ exec printf('norm %dG', vis_top)
+ call <SID>NM_show_next(0, 1)
+ if has_key(msg_top,'match') && msg_top['match'] != '0'
+ redraw
+ " do this last to hide the latency
+ let filter = ['('] + advance_tags + [')', 'AND', msg_top['id']]
+ call <SID>NM_add_remove_tags(filter, '-', advance_tags)
+ endif
+ return
+ endif
+
+ " entire message does not fit on the screen, scroll down to bottom, max 1/2 screen
+ let jmp = winheight(winnr()) / 2
+ let max = msg_bot['end'] - vis_bot
+ if jmp > max
+ let jmp = max
+ endif
+ exec printf('norm %dGzt', vis_top + jmp)
+ return
+endfunction
+
+function! s:NM_show_pipe_message()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_previous_fold()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_next_fold()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_toggle_fold()
+ echo 'not implemented'
+endfunction
+
+
+" --- --- show screen helper functions {{{2
+
+function! s:NM_show_get_message_for_line(line)
+ for msg in b:nm_raw_info['msgs']
+ if a:line > msg['end']
+ continue
+ endif
+ return msg
+ endfor
+ return {}
+endfunction
+
+function! s:NM_show_message_id()
+ if !exists('b:nm_raw_info')
+ throw 'Eeek! no b:nm_raw_info'
+ endif
+ let msg = <SID>NM_show_get_message_for_line(line('.'))
+ if has_key(msg,'id')
+ return msg['id']
+ endif
+ return ''
+endfunction
+
+function! s:NM_show_search_words()
+ if !exists('b:nm_words')
+ throw 'Eeek! no b:nm_words'
+ endif
+ return b:nm_words
+endfunction
+
+function! s:NM_show_fold_toggle(key, type, fold)
+ let info = b:nm_raw_info
+ let act = 'open'
+ if a:fold
+ let act = 'close'
+ endif
+ for fld in info['folds']
+ if fld[0] == a:type
+ exec printf('%dfold%s', fld[1], act)
+ endif
+ endfor
+ exec printf('nnoremap <buffer> %s :call <SID>NM_show_fold_toggle(''%s'', ''%s'', %d)<CR>', a:key, a:key, a:type, !a:fold)
+endfunction
+
+
+" s:NM_cmd_show_parse returns the following dictionary:
+" 'disp': lines to display
+" 'msgs': message info dicts { start, end, id, depth, filename, descr, header }
+" 'folds': fold info arrays [ type, start, end ]
+" 'foldtext': fold text indexed by start line
+function! s:NM_cmd_show_parse(inlines)
+ let info = { 'disp': [],
+ \ 'msgs': [],
+ \ 'folds': [],
+ \ 'foldtext': {} }
+ let msg = {}
+ let hdr = {}
+
+ let in_message = 0
+ let in_header = 0
+ let in_body = 0
+ let in_part = ''
+
+ let body_start = -1
+ let part_start = -1
+
+ let mode_type = ''
+ let mode_start = -1
+
+ let inlnum = 0
+ for line in a:inlines
+ let inlnum = inlnum + 1
+ let foldinfo = []
+
+ if strlen(in_part)
+ let part_end = 0
+
+ if match(line, g:notmuch_show_part_end_regexp) != -1
+ let part_end = len(info['disp'])
+ else
+ call add(info['disp'], line)
+ endif
+
+ if in_part == 'text/plain'
+ if !part_end && mode_type == ''
+ if match(line, g:notmuch_show_signature_regexp) != -1
+ let mode_type = 'sig'
+ let mode_start = len(info['disp'])
+ elseif match(line, g:notmuch_show_citation_regexp) != -1
+ let mode_type = 'cit'
+ let mode_start = len(info['disp'])
+ endif
+ elseif mode_type == 'cit'
+ if part_end || match(line, g:notmuch_show_citation_regexp) == -1
+ let outlnum = len(info['disp'])
+ let foldinfo = [ mode_type, mode_start, outlnum-1, len(info['msgs']),
+ \ printf('[ %d-line citation. Press "c" to show. ]', outlnum - mode_start) ]
+ let mode_type = ''
+ endif
+ elseif mode_type == 'sig'
+ let outlnum = len(info['disp'])
+ if (outlnum - mode_start) > g:notmuch_show_signature_lines_max
+ let mode_type = ''
+ elseif part_end
+ let foldinfo = [ mode_type, mode_start, outlnum-1, len(info['msgs']),
+ \ printf('[ %d-line signature. Press "s" to show. ]', outlnum - mode_start) ]
+ let mode_type = ''
+ endif
+ endif
+ endif
+
+ if part_end
+ " FIXME: this is a hack for handling two folds being added for one line
+ " we should handle addinga fold in a function
+ if len(foldinfo) && foldinfo[1] < foldinfo[2]
+ call add(info['folds'], foldinfo[0:3])
+ let info['foldtext'][foldinfo[1]] = foldinfo[4]
+ endif
+
+ let foldinfo = [ 'text', part_start, part_end, len(info['msgs']),
+ \ printf('[ %d-line %s. Press "p" to show. ]', part_end - part_start, in_part) ]
+ let in_part = ''
+ call add(info['disp'], '')
+ endif
+
+ elseif in_body
+ if !has_key(msg,'body_start')
+ let msg['body_start'] = len(info['disp']) + 1
+ endif
+ if match(line, g:notmuch_show_body_end_regexp) != -1
+ let body_end = len(info['disp'])
+ let foldinfo = [ 'bdy', body_start, body_end, len(info['msgs']),
+ \ printf('[ BODY %d - %d lines ]', len(info['msgs']), body_end - body_start) ]
+
+ let in_body = 0
+
+ elseif match(line, g:notmuch_show_part_begin_regexp) != -1
+ let m = matchlist(line, 'ID: \(\d\+\), Content-type: \(\S\+\)')
+ let in_part = 'unknown'
+ if len(m)
+ let in_part = m[2]
+ endif
+ call add(info['disp'],
+ \ printf('--- %s ---', in_part))
+ let part_start = len(info['disp']) + 1
+ endif
+
+ elseif in_header
+ if in_header == 1
+ let msg['descr'] = line
+ call add(info['disp'], line)
+ let in_header = 2
+ let msg['hdr_start'] = len(info['disp']) + 1
+
+ else
+ if match(line, g:notmuch_show_header_end_regexp) != -1
+ let hdr_start = msg['hdr_start']+1
+ let hdr_end = len(info['disp'])
+ let foldinfo = [ 'hdr', hdr_start, hdr_end, len(info['msgs']),
+ \ printf('[ %d-line headers. Press "h" to show. ]', hdr_end + 1 - hdr_start) ]
+ let msg['header'] = hdr
+ let in_header = 0
+ let hdr = {}
+ else
+ let m = matchlist(line, '^\(\w\+\):\s*\(.*\)$')
+ if len(m)
+ let hdr[m[1]] = m[2]
+ if match(g:notmuch_show_headers, m[1]) != -1
+ call add(info['disp'], line)
+ endif
+ endif
+ endif
+ endif
+
+ elseif in_message
+ if match(line, g:notmuch_show_message_end_regexp) != -1
+ let msg['end'] = len(info['disp'])
+ call add(info['disp'], '')
+
+ let foldinfo = [ 'msg', msg['start'], msg['end'], len(info['msgs']),
+ \ printf('[ MSG %d - %s ]', len(info['msgs']), msg['descr']) ]
+
+ call add(info['msgs'], msg)
+ let msg = {}
+ let in_message = 0
+ let in_header = 0
+ let in_body = 0
+ let in_part = ''
+
+ elseif match(line, g:notmuch_show_header_begin_regexp) != -1
+ let in_header = 1
+ continue
+
+ elseif match(line, g:notmuch_show_body_begin_regexp) != -1
+ let body_start = len(info['disp']) + 1
+ let in_body = 1
+ continue
+ endif
+
+ else
+ if match(line, g:notmuch_show_message_begin_regexp) != -1
+ let msg['start'] = len(info['disp']) + 1
+
+ let m = matchlist(line, g:notmuch_show_message_parse_regexp)
+ if len(m)
+ let msg['id'] = m[1]
+ let msg['depth'] = m[2]
+ let msg['match'] = m[3]
+ let msg['filename'] = m[4]
+ endif
+
+ let in_message = 1
+ endif
+ endif
+
+ if len(foldinfo) && foldinfo[1] < foldinfo[2]
+ call add(info['folds'], foldinfo[0:3])
+ let info['foldtext'][foldinfo[1]] = foldinfo[4]
+ endif
+ endfor
+ return info
+endfunction
+
+function! s:NM_cmd_show_mkfolds()
+ let info = b:nm_raw_info
+
+ for afold in info['folds']
+ exec printf('%d,%dfold', afold[1], afold[2])
+ let state = 'open'
+ if (afold[0] == 'sig' && g:notmuch_show_fold_signatures)
+ \ || (afold[0] == 'cit' && g:notmuch_show_fold_citations)
+ \ || (afold[0] == 'bdy' && g:notmuch_show_fold_bodies)
+ \ || (afold[0] == 'hdr' && g:notmuch_show_fold_headers)
+ let state = 'close'
+ elseif afold[0] == 'msg'
+ let idx = afold[3]
+ let msg = info['msgs'][idx]
+ if has_key(msg,'match') && msg['match'] == '0'
+ let state = 'close'
+ endif
+ endif
+ exec printf('%dfold%s', afold[1], state)
+ endfor
+endfunction
+
+function! s:NM_cmd_show_mksyntax()
+ let info = b:nm_raw_info
+ let cnt = 0
+ for msg in info['msgs']
+ let cnt = cnt + 1
+ let start = msg['start']
+ let hdr_start = msg['hdr_start']
+ let body_start = msg['body_start']
+ let end = msg['end']
+ exec printf('syntax region nmShowMsg%dDesc start=''\%%%dl'' end=''\%%%dl'' contains=@nmShowMsgDesc', cnt, start, start+1)
+ exec printf('syntax region nmShowMsg%dHead start=''\%%%dl'' end=''\%%%dl'' contains=@nmShowMsgHead', cnt, hdr_start, body_start)
+ exec printf('syntax region nmShowMsg%dBody start=''\%%%dl'' end=''\%%%dl'' contains=@nmShowMsgBody', cnt, body_start, end)
+ endfor
+endfunction
+
+function! NM_cmd_show_foldtext()
+ let foldtext = b:nm_raw_info['foldtext']
+ return foldtext[v:foldstart]
+endfunction
+
+
+" --- implement compose screen {{{1
+
+function! s:NM_cmd_compose(words, body_lines)
+ let lines = !g:notmuch_compose_header_help ? [] : [
+ \ 'Notmuch-Help: Type in your message here; to help you use these bindings:',
+ \ 'Notmuch-Help: ,a - attach a file',
+ \ 'Notmuch-Help: ,s - send the message (Notmuch-Help lines will be removed)',
+ \ 'Notmuch-Help: ,q - abort the message',
+ \ 'Notmuch-Help: <Tab> - skip through header lines',
+ \ ]
+ let start_on_line = 0
+
+ let hdrs = { }
+ for word in a:words
+ let m = matchlist(word, '^\(\w[^:]*\):\s*\(.*\)\s*$')
+ if !len(m)
+ throw 'Eeek! bad parameter ''' . string(word) . ''''
+ endif
+ let key = substitute(m[1], '\<\w', '\U&', 'g')
+ if !has_key(hdrs, key)
+ let hdrs[key] = []
+ endif
+ if strlen(m[2])
+ call add(hdrs[key], m[2])
+ endif
+ endfor
+
+ if !has_key(hdrs, 'From') || !len(hdrs['From'])
+ let me = <SID>NM_compose_get_user_email()
+ let hdrs['From'] = [ me ]
+ endif
+
+ for key in g:notmuch_compose_headers
+ let text = has_key(hdrs, key) ? join(hdrs[key], ', ') : ''
+ call add(lines, key . ': ' . text)
+ if !start_on_line && !strlen(text)
+ let start_on_line = len(lines)
+ endif
+ endfor
+
+ for [key,val] in items(hdrs)
+ if match(g:notmuch_compose_headers, key) == -1
+ let line = key . ': ' . join(val, ', ')
+ call add(lines, line)
+ endif
+ endfor
+
+ call extend(lines, [ '', '' ])
+ if !start_on_line
+ let start_on_line = len(lines) + 1
+ endif
+
+ if len(a:body_lines)
+ call extend(lines, a:body_lines)
+ else
+ call add(lines, '')
+ endif
+ call extend(lines, g:notmuch_signature)
+
+ let prev_bufnr = bufnr('%')
+ setlocal bufhidden=hide
+ call <SID>NM_newFileBuffer(g:notmuch_compose_temp_file_dir, '%s.mail',
+ \ 'compose', lines)
+ setlocal bufhidden=hide
+ let b:nm_prev_bufnr = prev_bufnr
+
+ call <SID>NM_set_map('n', g:notmuch_compose_nmaps)
+ call <SID>NM_set_map('i', g:notmuch_compose_imaps)
+
+ call cursor(start_on_line, strlen(start_on_line) + 1)
+ if g:notmuch_compose_insert_mode_start
+ startinsert!
+ endif
+ echo 'Type your message, use <TAB> to jump to next header and then body.'
+endfunction
+
+function! s:NM_compose_send()
+ call <SID>NM_assert_buffer_type('compose')
+ let fname = expand('%')
+ let lnum = 1
+ let line = getline(lnum)
+ let hdrs = {}
+ let lst_hdr = ''
+ while match(line, '^$') == -1
+ if match(line, '^Notmuch-Help:') != -1
+ " skip it
+ elseif strlen(lst_hdr) && match(line, '^\s') != -1
+ let hdrs[lst_hdr][-1] = hdrs[lst_hdr][-1] . substitute(line, '^\s*', ' ', '')
+ else
+ let m = matchlist(line, '^\(\w[^:]*\):\s*\(.*\)\s*$')
+ if !len(m)
+ cursor(lnum, 0)
+ throw printf('Eeek! invalid header on line %d', lnum)
+ endif
+ let key = substitute(m[1], '\<\w', '\U&', 'g')
+ if strlen(m[2])
+ if !has_key(hdrs, key)
+ let hdrs[key] = []
+ endif
+ call add(hdrs[key], m[2])
+ endif
+ let lst_hdr = key
+ endif
+ let lnum = lnum + 1
+ let line = getline(lnum)
+ endwhile
+ let body_starts = lnum + 1
+ exec printf('0,%dd', body_starts)
+ write
+
+ "[-a header] [-b bcc-addr] [-c cc-addr] [-s subject] to-addr
+ let cmd = ['mail']
+ let tos = []
+ for [key, vals] in items(hdrs)
+ if key == 'To'
+ call extend(tos, vals)
+ elseif key == 'Bcc'
+ for adr in vals
+ call add(cmd, '-b')
+ call add(cmd, adr)
+ endfor
+ elseif key == 'Cc'
+ for adr in vals
+ call add(cmd, '-c')
+ call add(cmd, adr)
+ endfor
+ elseif key == 'Subject'
+ for txt in vals
+ call add(cmd, '-s')
+ call add(cmd, txt)
+ endfor
+ else
+ for val in vals
+ call add(cmd, '-a')
+ call add(cmd, key . ': ' . val)
+ endfor
+ endif
+ endfor
+ call extend(cmd, tos)
+
+ call map(cmd, 's:NM_shell_escape(v:val)')
+ let cmdtxt = join(cmd) . '< ' . fname
+ let out = system(cmdtxt)
+ let err = v:shell_error
+ if err
+ undo
+ write
+ call <SID>NM_newBuffer('new', 'error',
+ \ "While running...\n" .
+ \ ' ' . cmdtxt . "\n" .
+ \ "\n" .
+ \ "Failed with...\n" .
+ \ substitute(out, '^', ' ', 'g'))
+ echohl Error
+ echo 'Eeek! unable to send mail'
+ echohl None
+ return
+ endif
+
+ if !exists('b:nm_prev_bufnr')
+ bdelete
+ else
+ let prev_bufnr = b:nm_prev_bufnr
+ bdelete
+ if prev_bufnr == bufnr('%')
+ exec printf("buffer %d", prev_bufnr)
+ endif
+ endif
+ call delete(fname)
+ echo 'Mail sent successfully.'
+endfunction
+
+function! s:NM_compose_attach()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_compose_next_entry_area()
+ let lnum = line('.')
+ let hdr_end = <SID>NM_compose_find_line_match(1,'^$',1)
+ echo 'header end = ' . string(hdr_end)
+ if lnum < hdr_end
+ let lnum = lnum + 1
+ let line = getline(lnum)
+ if match(line, '^\([^:]\+\):\s*$') == -1
+ call cursor(lnum, strlen(line) + 1)
+ return ''
+ endif
+ while match(getline(lnum+1), '^\s') != -1
+ let lnum = lnum + 1
+ endwhile
+ call cursor(lnum, strlen(getline(lnum)) + 1)
+ return ''
+
+ elseif lnum == hdr_end
+ call cursor(lnum+1, strlen(getline(lnum+1)) + 1)
+ return ''
+ endif
+ if mode() == 'i'
+ if !getbufvar(bufnr('.'), '&et')
+ return "\t"
+ endif
+ let space = ''
+ let shiftwidth = a:shiftwidth
+ let shiftwidth = shiftwidth - ((virtcol('.')-1) % shiftwidth)
+ " we assume no one has shiftwidth set to more than 40 :)
+ return ' '[0:shiftwidth]
+ endif
+endfunction
+
+" --- --- compose screen helper functions {{{2
+
+function! s:NM_compose_get_user_email()
+ let name = substitute(system('id -u -n'), '\v(^\s*|\s*$|\n)', '', 'g')
+ let fqdn = substitute(system('hostname -f'), '\v(^\s*|\s*$|\n)', '', 'g')
+
+ " TODO: do this properly
+ return name . '@' . fqdn
+endfunction
+
+function! s:NM_compose_find_line_match(start, pattern, failure)
+ let lnum = a:start
+ let lend = line('$')
+ while lnum < lend
+ if match(getline(lnum), a:pattern) != -1
+ return lnum
+ endif
+ let lnum = lnum + 1
+ endwhile
+ return a:failure
+endfunction
+
+
+" --- notmuch helper functions {{{1
+
+function! s:NM_newBuffer(how, type, content)
+ if strlen(a:how)
+ exec a:how
+ else
+ enew
+ endif
+ setlocal buftype=nofile readonly modifiable scrolloff=0 sidescrolloff=0