+" --- implement compose screen {{{1
+
+function! s:NM_cmd_compose(words, body_lines)
+ let lines = []
+ let start_on_line = 0
+
+ let hdrs = { }
+ for word in a:words
+ let m = matchlist(word, '^\(\w[^:]*\):\s*\(.*\)\s*$')
+ if !len(m)
+ throw 'Eeek! bad parameter ''' . string(word) . ''''
+ endif
+ let key = substitute(m[1], '\<\w', '\U&', 'g')
+ if !has_key(hdrs, key)
+ let hdrs[key] = []
+ endif
+ if strlen(m[2])
+ call add(hdrs[key], m[2])
+ endif
+ endfor
+
+ if !has_key(hdrs, 'From') || !len(hdrs['From'])
+ let me = <SID>NM_compose_get_user_email()
+ let hdrs['From'] = [ me ]
+ endif
+
+ for key in g:notmuch_compose_headers
+ let text = has_key(hdrs, key) ? join(hdrs[key], ', ') : ''
+ call add(lines, key . ': ' . text)
+ if !start_on_line && !strlen(text)
+ let start_on_line = len(lines)
+ endif
+ endfor
+
+ for [key,val] in items(hdrs)
+ if match(g:notmuch_compose_headers, key) == -1
+ let line = key . ': ' . join(val, ', ')
+ call add(lines, line)
+ endif
+ endfor
+
+ call add(lines, '')
+ if !start_on_line
+ let start_on_line = len(lines) + 1
+ endif
+
+ if len(a:body_lines)
+ call extend(lines, a:body_lines)
+ else
+ call extend(lines, [ '', '' ])
+ endif
+
+ call <SID>NM_newComposeBuffer(lines, start_on_line)
+endfunction
+
+function! s:NM_compose_send()
+ call <SID>NM_assert_buffer_type('compose')
+ let fname = expand('%')
+ let lnum = 1
+ let line = getline(lnum)
+ let lst_hdr = ''
+ while match(line, '^$') == -1
+ if !exists("hdr_starts") && match(line, '^Notmuch-Help:') == -1
+ let hdr_starts = lnum - 1
+ endif
+ let lnum = lnum + 1
+ let line = getline(lnum)
+ endwhile
+ let body_starts = lnum - 1
+
+ call append(body_starts, 'Date: ' . strftime('%a, %d %b %Y %H:%M:%S %z'))
+ exec printf(':0,%dd', hdr_starts)
+ write
+
+ let line = getline(1)
+ let m = matchlist(line, '^From:\s*\(.*\)\s*<\(.*\)>$')
+ if (len(m) >= 2)
+ let from = m[2]
+ else
+ let m = matchlist(line, '^From:\s*\(.*\)$')
+ let from = m[1]
+ endif
+
+ let cmdtxt = g:notmuch_sendmail . ' -t -f ' . from . ' < ' . fname
+ let out = system(cmdtxt)
+ let err = v:shell_error
+ if err
+ undo
+ write
+ call <SID>NM_newBuffer('new', 'error',
+ \ "While running...\n" .
+ \ ' ' . cmdtxt . "\n" .
+ \ "\n" .
+ \ "Failed with...\n" .
+ \ substitute(out, '^', ' ', 'g'))
+ echohl Error
+ echo 'Eeek! unable to send mail'
+ echohl None
+ return
+ endif
+
+ if !exists('b:nm_prev_bufnr')
+ bdelete
+ else
+ let prev_bufnr = b:nm_prev_bufnr
+ bdelete
+ if prev_bufnr == bufnr('%')
+ exec printf("buffer %d", prev_bufnr)
+ endif
+ endif
+ call delete(fname)
+ echo 'Mail sent successfully.'
+endfunction
+
+function! s:NM_compose_attach()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_compose_next_entry_area()
+ let lnum = line('.')
+ let hdr_end = <SID>NM_compose_find_line_match(1,'^$',1)
+ if lnum < hdr_end
+ let lnum = lnum + 1
+ let line = getline(lnum)
+ if match(line, '^\([^:]\+\):\s*$') == -1
+ call cursor(lnum, strlen(line) + 1)
+ return ''
+ endif
+ while match(getline(lnum+1), '^\s') != -1
+ let lnum = lnum + 1
+ endwhile
+ call cursor(lnum, strlen(getline(lnum)) + 1)
+ return ''
+
+ elseif lnum == hdr_end
+ call cursor(lnum+1, strlen(getline(lnum+1)) + 1)
+ return ''
+ endif
+ if mode() == 'i'
+ if !getbufvar(bufnr('.'), '&et')
+ return "\t"
+ endif
+ let space = ''
+ let shiftwidth = a:shiftwidth
+ let shiftwidth = shiftwidth - ((virtcol('.')-1) % shiftwidth)
+ " we assume no one has shiftwidth set to more than 40 :)
+ return ' '[0:shiftwidth]
+ endif
+endfunction
+
+" --- --- compose screen helper functions {{{2
+
+function! s:NM_compose_get_user_email()
+ " TODO: do this properly (still), i.e., allow for multiple email accounts
+ let email = substitute(system('notmuch config get user.primary_email'), '\v(^\s*|\s*$|\n)', '', 'g')
+ return email
+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
+
+