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   1 " notmuch.vim plugin --- run notmuch within vim
   2 "
   3 " Copyright © Carl Worth
   4 "
   5 " This file is part of Notmuch.
   6 "
   7 " Notmuch is free software: you can redistribute it and/or modify it
   8 " under the terms of the GNU General Public License as published by
   9 " the Free Software Foundation, either version 3 of the License, or
  10 " (at your option) any later version.
  11 "
  12 " Notmuch is distributed in the hope that it will be useful, but
  13 " WITHOUT ANY WARRANTY; without even the implied warranty of
  14 " MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 " General Public License for more details.
  16 "
  17 " You should have received a copy of the GNU General Public License
  18 " along with Notmuch.  If not, see <http://www.gnu.org/licenses/>.
  19 "
  20 " Authors: Bart Trojanowski <bart@jukie.net>
  21
  22 " --- configuration defaults {{{1
  23
  24 let s:notmuch_defaults = {
  25         \ 'g:notmuch_cmd':                           'notmuch'                    ,
  26         \ 'g:notmuch_debug':                         0                            ,
  27         \
  28         \ 'g:notmuch_search_newest_first':           1                            ,
  29         \ 'g:notmuch_search_from_column_width':      20                           ,
  30         \
  31         \ 'g:notmuch_show_fold_signatures':          1                            ,
  32         \ 'g:notmuch_show_fold_citations':           1                            ,
  33         \ 'g:notmuch_show_fold_bodies':              0                            ,
  34         \ 'g:notmuch_show_fold_headers':             1                            ,
  35         \
  36         \ 'g:notmuch_show_message_begin_regexp':     '^\fmessage{'                ,
  37         \ 'g:notmuch_show_message_end_regexp':       '^\fmessage}'                ,
  38         \ 'g:notmuch_show_header_begin_regexp':      '^\fheader{'                 ,
  39         \ 'g:notmuch_show_header_end_regexp':        '^\fheader}'                 ,
  40         \ 'g:notmuch_show_body_begin_regexp':        '^\fbody{'                   ,
  41         \ 'g:notmuch_show_body_end_regexp':          '^\fbody}'                   ,
  42         \ 'g:notmuch_show_attachment_begin_regexp':  '^\fattachment{'             ,
  43         \ 'g:notmuch_show_attachment_end_regexp':    '^\fattachment}'             ,
  44         \ 'g:notmuch_show_part_begin_regexp':        '^\fpart{'                   ,
  45         \ 'g:notmuch_show_part_end_regexp':          '^\fpart}'                   ,
  46         \ 'g:notmuch_show_marker_regexp':            '^\f\\(message\\|header\\|body\\|attachment\\|part\\)[{}].*$',
  47         \
  48         \ 'g:notmuch_show_message_parse_regexp':     '\(id:[^ ]*\) depth:\([0-9]*\) filename:\(.*\)$',
  49         \ 'g:notmuch_show_tags_regexp':              '(\([^)]*\))$'               ,
  50         \
  51         \ 'g:notmuch_show_signature_regexp':         '^\(-- \?\|_\+\)$'           ,
  52         \ 'g:notmuch_show_signature_lines_max':      12                           ,
  53         \
  54         \ 'g:notmuch_show_citation_regexp':          '^\s*>'                      ,
  55         \ }
  56
  57 " defaults for g:notmuch_initial_search_words
  58 " override with: let g:notmuch_initial_search_words = [ ... ]
  59 let s:notmuch_initial_search_words_defaults = [
  60         \ 'tag:inbox and tag:unread',
  61         \ ]
  62
  63 " defaults for g:notmuch_show_headers
  64 " override with: let g:notmuch_show_headers = [ ... ]
  65 let s:notmuch_show_headers_defaults = [
  66         \ 'Subject',
  67         \ 'To',
  68         \ 'Cc',
  69         \ 'Bcc',
  70         \ 'Date',
  71         \ ]
  72
  73 " defaults for g:notmuch_folders
  74 " override with: let g:notmuch_folders = [ ... ]
  75 let s:notmuch_folders_defaults = [
  76         \ [ 'new',    'tag:inbox and tag:unread' ],
  77         \ [ 'inbox',  'tag:inbox'                ],
  78         \ [ 'unread', 'tag:unread'               ],
  79         \ ]
  80
  81 " --- keyboard mapping definitions {{{1
  82
  83 " --- --- bindings for folders mode {{{2
  84
  85 let g:notmuch_folders_maps = {
  86         \ 's':          ':call <SID>NM_search_prompt()<CR>',
  87         \ 'q':          ':call <SID>NM_kill_this_buffer()<CR>',
  88         \ '=':          ':call <SID>NM_folders_refresh_view()<CR>',
  89         \ '<Enter>':    ':call <SID>NM_folders_show_search()<CR>',
  90         \ }
  91
  92 " --- --- bindings for search screen {{{2
  93 let g:notmuch_search_maps = {
  94         \ '<Enter>':    ':call <SID>NM_search_show_thread()<CR>',
  95         \ '<C-]>':      ':call <SID>NM_search_expand(''<cword>'')<CR>',
  96         \ 'a':          ':call <SID>NM_search_archive_thread()<CR>',
  97         \ 'f':          ':call <SID>NM_search_filter()<CR>',
  98         \ 'm':          ':call <SID>NM_new_mail()<CR>',
  99         \ 'o':          ':call <SID>NM_search_toggle_order()<CR>',
 100         \ 'r':          ':call <SID>NM_search_reply_to_thread()<CR>',
 101         \ 's':          ':call <SID>NM_search_prompt()<CR>',
 102         \ ',s':         ':call <SID>NM_search_edit()<CR>',
 103         \ 't':          ':call <SID>NM_search_filter_by_tag()<CR>',
 104         \ 'q':          ':call <SID>NM_kill_this_buffer()<CR>',
 105         \ '+':          ':call <SID>NM_search_add_tags([])<CR>',
 106         \ '-':          ':call <SID>NM_search_remove_tags([])<CR>',
 107         \ '=':          ':call <SID>NM_search_refresh_view()<CR>',
 108         \ '?':          ':echo <SID>NM_search_thread_id()<CR>',
 109         \ }
 110
 111 " --- --- bindings for show screen {{{2
 112 let g:notmuch_show_maps = {
 113         \ '<C-P>':      ':call <SID>NM_show_previous(1)<CR>',
 114         \ '<C-N>':      ':call <SID>NM_show_next(1)<CR>',
 115         \ '<C-]>':      ':call <SID>NM_search_expand(''<cword>'')<CR>',
 116         \ 'q':          ':call <SID>NM_kill_this_buffer()<CR>',
 117         \
 118         \ 'b':          ':call <SID>NM_show_fold_toggle(''b'', ''bdy'', !g:notmuch_show_fold_bodies)<CR>',
 119         \ 'c':          ':call <SID>NM_show_fold_toggle(''c'', ''cit'', !g:notmuch_show_fold_citations)<CR>',
 120         \ 'h':          ':call <SID>NM_show_fold_toggle(''h'', ''hdr'', !g:notmuch_show_fold_headers)<CR>',
 121         \ 's':          ':call <SID>NM_show_fold_toggle(''s'', ''sig'', !g:notmuch_show_fold_signatures)<CR>',
 122         \
 123         \ 'a':          ':call <SID>NM_show_archive_thread()<CR>',
 124         \ 'A':          ':call <SID>NM_show_mark_read_then_archive_thread()<CR>',
 125         \ 'N':          ':call <SID>NM_show_mark_read_then_next_open_message()<CR>',
 126         \ 'v':          ':call <SID>NM_show_view_all_mime_parts()<CR>',
 127         \ '+':          ':call <SID>NM_show_add_tag()<CR>',
 128         \ '-':          ':call <SID>NM_show_remove_tag()<CR>',
 129         \ '<Space>':    ':call <SID>NM_show_advance_marking_read_and_archiving()<CR>',
 130         \ '\|':         ':call <SID>NM_show_pipe_message()<CR>',
 131         \
 132         \ '<S-Tab>':    ':call <SID>NM_show_previous_fold()<CR>',
 133         \ '<Tab>':      ':call <SID>NM_show_next_fold()<CR>',
 134         \ '<Enter>':    ':call <SID>NM_show_toggle_fold()<CR>',
 135         \
 136         \ 'r':          ':call <SID>NM_show_reply()<CR>',
 137         \ 'm':          ':call <SID>NM_new_mail()<CR>',
 138         \ '?':          ':echo <SID>NM_show_message_id() . ''  @ '' . join(<SID>NM_show_search_words())<CR>',
 139         \ }
 140
 141
 142 " --- implement folders screen {{{1
 143
 144 function! s:NM_cmd_folders(words)
 145         if len(a:words)
 146                 echoe 'Not exapecting any arguments for folders command.'
 147         endif
 148         let cmd = ['count']
 149         let disp = []
 150         let searches = []
 151         for entry in g:notmuch_folders
 152                 let [ name, search ] = entry
 153                 let data = s:NM_run(cmd + [search])
 154                 let cnt = matchlist(data, '\(\d\+\)')[1]
 155                 call add(disp, printf('%9d %-20s (%s)', cnt, name, search))
 156                 call add(searches, search)
 157         endfor
 158
 159         call <SID>NM_newBuffer('folders', join(disp, "\n"))
 160         let b:nm_searches = searches
 161         let b:nm_timestamp = reltime()
 162
 163         call <SID>NM_cmd_folders_mksyntax()
 164         call <SID>NM_set_map(g:notmuch_folders_maps)
 165         setlocal cursorline
 166         setlocal nowrap
 167 endfunction
 168
 169 function! s:NM_cmd_folders_mksyntax()
 170 endfunction
 171
 172 " --- --- folders screen action functions {{{2
 173
 174 function! s:NM_folders_refresh_view()
 175         let lno = line('.')
 176         setlocal bufhidden=delete
 177         call s:NM_cmd_folders([])
 178         exec printf('norm %dG', lno)
 179 endfunction
 180
 181 function! s:NM_folders_show_search()
 182         let line = line('.')
 183         let search = b:nm_searches[line-1]
 184
 185         let prev_bufnr = bufnr('%')
 186         setlocal bufhidden=hide
 187         call <SID>NM_cmd_search([search])
 188         setlocal bufhidden=delete
 189         let b:nm_prev_bufnr = prev_bufnr
 190 endfunction
 191
 192
 193 " --- implement search screen {{{1
 194
 195 function! s:NM_cmd_search(words)
 196         let cmd = ['search']
 197         if g:notmuch_search_newest_first
 198                 let cmd = cmd + ['--sort=newest-first']
 199         else
 200                 let cmd = cmd + ['--sort=oldest-first']
 201         endif
 202         let data = s:NM_run(cmd + a:words)
 203         let lines = split(data, "\n")
 204         let disp = copy(lines)
 205         call map(disp, 's:NM_cmd_search_fmtline(v:val)')
 206
 207         call <SID>NM_newBuffer('search', join(disp, "\n"))
 208         let b:nm_raw_lines = lines
 209         let b:nm_search_words = a:words
 210
 211         call <SID>NM_cmd_search_mksyntax()
 212         call <SID>NM_set_map(g:notmuch_search_maps)
 213         setlocal cursorline
 214         setlocal nowrap
 215 endfunction
 216 function! s:NM_cmd_search_fmtline(line)
 217         let m = matchlist(a:line, '^\(thread:\S\+\)\s\([^]]\+\]\) \([^;]\+\); \(.*\) (\([^(]*\))$')
 218         if !len(m)
 219                 return 'ERROR PARSING: ' . a:line
 220         endif
 221         let max = g:notmuch_search_from_column_width
 222         let from = m[3]
 223         if strlen(from) >= max
 224                 let from = substitute(m[3][0:max-4], '[^A-Za-z1-9_]*$', '', '') . '...'
 225         endif
 226         return printf('%-20s %-20s | %s (%s)', m[2], from, m[4], m[5])
 227 endfunction
 228 function! s:NM_cmd_search_mksyntax()
 229         syntax clear nmSearchFrom
 230         exec printf('syntax match nmSearchFrom /\(\] \)\@<=.\{%d\}/ oneline contained', g:notmuch_search_from_column_width)
 231 endfunction
 232
 233 " --- --- search screen action functions {{{2
 234
 235 function! s:NM_search_show_thread()
 236         let id = <SID>NM_search_thread_id()
 237         if id != ''
 238                 let words = [id]
 239                 if exists('b:nm_search_words')
 240                         let words = ['('] + b:nm_search_words + [')', 'and', id]
 241                 endif
 242                 if len(words)
 243                         call <SID>NM_cmd_show(words)
 244                 endif
 245         endif
 246 endfunction
 247
 248 function! s:NM_search_prompt()
 249         " TODO: input() can support completion
 250         let text = input('NotMuch Search: ')
 251         if strlen(text)
 252                 let tags = split(text)
 253         else
 254                 let tags = s:notmuch_initial_search_words_defaults
 255         endif
 256         let prev_bufnr = bufnr('%')
 257         if b:nm_type == 'search'
 258                 " TODO: we intend to replace the current buffer,
 259                 "       ... maybe we could just clear it
 260                 let prev_bufnr = b:nm_prev_bufnr
 261                 setlocal bufhidden=delete
 262         else
 263                 setlocal bufhidden=hide
 264         endif
 265         call <SID>NM_cmd_search(tags)
 266         setlocal bufhidden=delete
 267         let b:nm_prev_bufnr = prev_bufnr
 268 endfunction
 269
 270 function! s:NM_search_edit()
 271         " TODO: input() can support completion
 272         let text = input('NotMuch Search: ', join(b:nm_search_words, ' '))
 273         if strlen(text)
 274                 call <SID>NM_cmd_search(split(text))
 275         endif
 276 endfunction
 277
 278 function! s:NM_search_archive_thread()
 279         call <SID>NM_add_remove_tags_on_screen('-', ['inbox'])
 280         call <SID>NM_add_remove_tags('-', ['inbox'])
 281         norm j
 282 endfunction
 283
 284 function! s:NM_search_filter()
 285         call <SID>NM_search_filter_helper('Filter: ', '', '')
 286 endfunction
 287
 288 function! s:NM_search_filter_by_tag()
 289         call <SID>NM_search_filter_helper('Filter Tag(s): ', 'tag:', 'and')
 290 endfunction
 291
 292 function! s:NM_search_filter_helper(prompt, prefix, joiner)
 293         " TODO: input() can support completion
 294         let text = input(a:prompt)
 295         if !strlen(text)
 296                 return
 297         endif
 298
 299         let tags = split(text)
 300         if strlen(a:prefix)
 301                 call map(tags, 'a:prefix . v:val')
 302         endif
 303         if strlen(a:joiner)
 304                 let idx = len(tags) - 1
 305                 while idx > 0
 306                         call insert(tags, a:joiner, idx)
 307                         let idx = idx - 1
 308                 endwhile
 309         endif
 310         let tags = b:nm_search_words + ['and', '('] + tags + [')']
 311
 312         let prev_bufnr = bufnr('%')
 313         setlocal bufhidden=hide
 314         call <SID>NM_cmd_search(tags)
 315         setlocal bufhidden=delete
 316         let b:nm_prev_bufnr = prev_bufnr
 317 endfunction
 318
 319 function! s:NM_search_toggle_order()
 320         let g:notmuch_search_newest_first = !g:notmuch_search_newest_first
 321         " FIXME: maybe this would be better done w/o reading re-reading the lines
 322         "         reversing the b:nm_raw_lines and the buffer lines would be better
 323         call <SID>NM_search_refresh_view()
 324 endfunction
 325
 326 function! s:NM_search_reply_to_thread()
 327         echo 'not implemented'
 328 endfunction
 329
 330 function! s:NM_search_add_tags(tags)
 331         call <SID>NM_search_add_remove_tags('Add Tag(s): ', '+', a:tags)
 332 endfunction
 333
 334 function! s:NM_search_remove_tags(tags)
 335         call <SID>NM_search_add_remove_tags('Remove Tag(s): ', '-', a:tags)
 336 endfunction
 337
 338 function! s:NM_search_refresh_view()
 339         let lno = line('.')
 340         let prev_bufnr = b:nm_prev_bufnr
 341         setlocal bufhidden=delete
 342         call <SID>NM_cmd_search(b:nm_search_words)
 343         let b:nm_prev_bufnr = prev_bufnr
 344         " FIXME: should find the line of the thread we were on if possible
 345         exec printf('norm %dG', lno)
 346 endfunction
 347
 348 " --- --- search screen helper functions {{{2
 349
 350 function! s:NM_search_thread_id()
 351         if !exists('b:nm_raw_lines')
 352                 echoe 'no b:nm_raw_lines'
 353                 return ''
 354         else
 355                 let line = line('.')
 356                 let info = b:nm_raw_lines[line-1]
 357                 let what = split(info, '\s\+')[0]
 358                 return what
 359         endif
 360 endfunction
 361
 362 function! s:NM_search_add_remove_tags(prompt, prefix, intags)
 363         if type(a:intags) != type([]) || len(a:intags) == 0
 364                 " TODO: input() can support completion
 365                 let text = input(a:prompt)
 366                 if !strlen(text)
 367                         return
 368                 endif
 369                 let tags = split(text, ' ')
 370         else
 371                 let tags = a:intags
 372         endif
 373         call <SID>NM_add_remove_tags(a:prefix, tags)
 374         call <SID>NM_add_remove_tags_on_screen(a:prefix, tags)
 375 endfunction
 376
 377 " --- implement show screen {{{1
 378
 379 function! s:NM_cmd_show(words)
 380         let prev_bufnr = bufnr('%')
 381         let data = s:NM_run(['show'] + a:words)
 382         let lines = split(data, "\n")
 383
 384         let info = s:NM_cmd_show_parse(lines)
 385
 386         setlocal bufhidden=hide
 387         call <SID>NM_newBuffer('show', join(info['disp'], "\n"))
 388         setlocal bufhidden=delete
 389         let b:nm_words = a:words
 390         let b:nm_raw_info = info
 391         let b:nm_prev_bufnr = prev_bufnr
 392
 393         call <SID>NM_cmd_show_mkfolds()
 394         call <SID>NM_cmd_show_mksyntax()
 395         call <SID>NM_set_map(g:notmuch_show_maps)
 396         setlocal foldtext=NM_cmd_show_foldtext()
 397         setlocal fillchars=
 398         setlocal foldcolumn=6
 399
 400 endfunction
 401
 402 function! s:NM_show_previous(can_change_thread)
 403         let info = b:nm_raw_info
 404         let lnum = line('.')
 405         for msg in reverse(copy(info['msgs']))
 406                 if lnum <= msg['start']
 407                         continue
 408                 endif
 409
 410                 exec printf('norm %dG', msg['start'])
 411                 " TODO: try to fit the message on screen
 412                 norm zz
 413                 return
 414         endfor
 415         if !a:can_change_thread
 416                 return
 417         endif
 418         call <SID>NM_kill_this_buffer()
 419         if line('.') != line('0')
 420                 norm k
 421                 call <SID>NM_search_show_thread()
 422                 norm G
 423                 call <SID>NM_show_previous(0)
 424         else
 425                 echo 'No more messages.'
 426         endif
 427 endfunction
 428
 429 function! s:NM_show_next(can_change_thread)
 430         let info = b:nm_raw_info
 431         let lnum = line('.')
 432         for msg in info['msgs']
 433                 if lnum >= msg['start']
 434                         continue
 435                 endif
 436
 437                 exec printf('norm %dG', msg['start'])
 438                 " TODO: try to fit the message on screen
 439                 norm zz
 440                 return
 441         endfor
 442         if !a:can_change_thread
 443                 return
 444         endif
 445         call <SID>NM_kill_this_buffer()
 446         if line('.') != line('$')
 447                 norm j
 448                 call <SID>NM_search_show_thread()
 449         else
 450                 echo 'No more messages.'
 451         endif
 452 endfunction
 453
 454 function! s:NM_show_archive_thread()
 455         echo 'not implemented'
 456 endfunction
 457
 458 function! s:NM_show_mark_read_then_archive_thread()
 459         echo 'not implemented'
 460 endfunction
 461
 462 function! s:NM_show_next_message()
 463         echo 'not implemented'
 464 endfunction
 465
 466 function! s:NM_show_mark_read_then_next_open_message()
 467         echo 'not implemented'
 468 endfunction
 469
 470 function! s:NM_show_previous_message()
 471         echo 'not implemented'
 472 endfunction
 473
 474 function! s:NM_show_reply()
 475         echo 'not implemented'
 476 endfunction
 477
 478 function! s:NM_show_view_all_mime_parts()
 479         echo 'not implemented'
 480 endfunction
 481
 482 function! s:NM_show_view_raw_message()
 483         echo 'not implemented'
 484 endfunction
 485
 486 function! s:NM_show_add_tag()
 487         echo 'not implemented'
 488 endfunction
 489
 490 function! s:NM_show_remove_tag()
 491         echo 'not implemented'
 492 endfunction
 493
 494 function! s:NM_show_advance_marking_read_and_archiving()
 495         echo 'not implemented'
 496 endfunction
 497
 498 function! s:NM_show_pipe_message()
 499         echo 'not implemented'
 500 endfunction
 501
 502 function! s:NM_show_previous_fold()
 503         echo 'not implemented'
 504 endfunction
 505
 506 function! s:NM_show_next_fold()
 507         echo 'not implemented'
 508 endfunction
 509
 510 function! s:NM_show_toggle_fold()
 511         echo 'not implemented'
 512 endfunction
 513
 514
 515 " --- --- show screen helper functions {{{2
 516
 517 function! s:NM_show_message_id()
 518         if !exists('b:nm_raw_info')
 519                 echoe 'no b:nm_raw_info'
 520                 return ''
 521         endif
 522         let info = b:nm_raw_info
 523         let lnum = line('.')
 524         for msg in info['msgs']
 525                 if lnum > msg['end']
 526                         continue
 527                 endif
 528
 529                 return msg['id']
 530         endfor
 531         return ''
 532 endfunction
 533
 534 function! s:NM_show_search_words()
 535         if !exists('b:nm_words')
 536                 echoe 'no b:nm_words'
 537                 return []
 538         endif
 539         return b:nm_words
 540 endfunction
 541
 542 function! s:NM_show_fold_toggle(key, type, fold)
 543         let info = b:nm_raw_info
 544         let act = 'open'
 545         if a:fold
 546                 let act = 'close'
 547         endif
 548         for fld in info['folds']
 549                 if fld[0] == a:type
 550                         exec printf('%dfold%s', fld[1], act)
 551                 endif
 552         endfor
 553         exec printf('nnoremap <buffer> %s :call <SID>NM_show_fold_toggle(''%s'', ''%s'', %d)<CR>', a:key, a:key, a:type, !a:fold)
 554 endfunction
 555
 556
 557 " s:NM_cmd_show_parse returns the following dictionary:
 558 "    'disp':     lines to display
 559 "    'msgs':     message info dicts { start, end, id, depth, filename, descr, header }
 560 "    'folds':    fold info arrays [ type, start, end ]
 561 "    'foldtext': fold text indexed by start line
 562 function! s:NM_cmd_show_parse(inlines)
 563         let info = { 'disp': [],
 564                    \ 'msgs': [],
 565                    \ 'folds': [],
 566                    \ 'foldtext': {} }
 567         let msg = {}
 568         let hdr = {}
 569
 570         let in_message = 0
 571         let in_header = 0
 572         let in_body = 0
 573         let in_part = ''
 574
 575         let body_start = -1
 576         let part_start = -1
 577
 578         let mode_type = ''
 579         let mode_start = -1
 580
 581         let inlnum = 0
 582         for line in a:inlines
 583                 let inlnum = inlnum + 1
 584                 let foldinfo = []
 585
 586                 if strlen(in_part)
 587                         let part_end = 0
 588
 589                         if match(line, g:notmuch_show_part_end_regexp) != -1
 590                                 let part_end = len(info['disp'])
 591                         else
 592                                 call add(info['disp'], line)
 593                         endif
 594
 595                         if in_part == 'text/plain'
 596                                 if !part_end && mode_type == ''
 597                                         if match(line, g:notmuch_show_signature_regexp) != -1
 598                                                 let mode_type = 'sig'
 599                                                 let mode_start = len(info['disp'])
 600                                         elseif match(line, g:notmuch_show_citation_regexp) != -1
 601                                                 let mode_type = 'cit'
 602                                                 let mode_start = len(info['disp'])
 603                                         endif
 604                                 elseif mode_type == 'cit'
 605                                         if part_end || match(line, g:notmuch_show_citation_regexp) == -1
 606                                                 let outlnum = len(info['disp'])
 607                                                 let foldinfo = [ mode_type, mode_start, outlnum-1,
 608                                                                \ printf('[ %d-line citation.  Press "c" to show. ]', outlnum - mode_start) ]
 609                                                 let mode_type = ''
 610                                         endif
 611                                 elseif mode_type == 'sig'
 612                                         let outlnum = len(info['disp'])
 613                                         if (outlnum - mode_start) > g:notmuch_show_signature_lines_max
 614                                                 let mode_type = ''
 615                                         elseif part_end
 616                                                 let foldinfo = [ mode_type, mode_start, outlnum-1,
 617                                                                \ printf('[ %d-line signature.  Press "s" to show. ]', outlnum - mode_start) ]
 618                                                 let mode_type = ''
 619                                         endif
 620                                 endif
 621                         endif
 622
 623                         if part_end
 624                                 " FIXME: this is a hack for handling two folds being added for one line
 625                                 "         we should handle addinga fold in a function
 626                                 if len(foldinfo) && foldinfo[1] < foldinfo[2]
 627                                         call add(info['folds'], foldinfo[0:2])
 628                                         let info['foldtext'][foldinfo[1]] = foldinfo[3]
 629                                 endif
 630
 631                                 let foldinfo = [ 'text', part_start, part_end,
 632                                                \ printf('[ %d-line %s.  Press "p" to show. ]', part_end - part_start, in_part) ]
 633                                 let in_part = ''
 634                                 call add(info['disp'], '')
 635                         endif
 636
 637                 elseif in_body
 638                         if !has_key(msg,'body_start')
 639                                 let msg['body_start'] = len(info['disp']) + 1
 640                         endif
 641                         if match(line, g:notmuch_show_body_end_regexp) != -1
 642                                 let body_end = len(info['disp'])
 643                                 let foldinfo = [ 'bdy', body_start, body_end,
 644                                                \ printf('[ BODY %d - %d lines ]', len(info['msgs']), body_end - body_start) ]
 645
 646                                 let in_body = 0
 647
 648                         elseif match(line, g:notmuch_show_part_begin_regexp) != -1
 649                                 let m = matchlist(line, 'ID: \(\d\+\), Content-type: \(\S\+\)')
 650                                 let in_part = 'unknown'
 651                                 if len(m)
 652                                         let in_part = m[2]
 653                                 endif
 654                                 call add(info['disp'],
 655                                          \ printf('--- %s ---', in_part))
 656                                 let part_start = len(info['disp']) + 1
 657                         endif
 658
 659                 elseif in_header
 660                         if in_header == 1
 661                                 let msg['descr'] = line
 662                                 call add(info['disp'], line)
 663                                 let in_header = 2
 664                                 let msg['hdr_start'] = len(info['disp']) + 1
 665
 666                         else
 667                                 if match(line, g:notmuch_show_header_end_regexp) != -1
 668                                         let hdr_start = msg['hdr_start']+1
 669                                         let hdr_end = len(info['disp'])
 670                                         let foldinfo = [ 'hdr', hdr_start, hdr_end,
 671                                                \ printf('[ %d-line headers.  Press "h" to show. ]', hdr_end + 1 - hdr_start) ]
 672                                         let msg['header'] = hdr
 673                                         let in_header = 0
 674                                         let hdr = {}
 675                                 else
 676                                         let m = matchlist(line, '^\(\w\+\):\s*\(.*\)$')
 677                                         if len(m)
 678                                                 let hdr[m[1]] = m[2]
 679                                                 if match(g:notmuch_show_headers, m[1]) != -1
 680                                                         call add(info['disp'], line)
 681                                                 endif
 682                                         endif
 683                                 endif
 684                         endif
 685
 686                 elseif in_message
 687                         if match(line, g:notmuch_show_message_end_regexp) != -1
 688                                 let msg['end'] = len(info['disp'])
 689                                 call add(info['disp'], '')
 690
 691                                 let foldinfo = [ 'msg', msg['start'], msg['end'],
 692                                                \ printf('[ MSG %d - %s ]', len(info['msgs']), msg['descr']) ]
 693
 694                                 call add(info['msgs'], msg)
 695                                 let msg = {}
 696                                 let in_message = 0
 697                                 let in_header = 0
 698                                 let in_body = 0
 699                                 let in_part = ''
 700
 701                         elseif match(line, g:notmuch_show_header_begin_regexp) != -1
 702                                 let in_header = 1
 703                                 continue
 704
 705                         elseif match(line, g:notmuch_show_body_begin_regexp) != -1
 706                                 let body_start = len(info['disp']) + 1
 707                                 let in_body = 1
 708                                 continue
 709                         endif
 710
 711                 else
 712                         if match(line, g:notmuch_show_message_begin_regexp) != -1
 713                                 let msg['start'] = len(info['disp']) + 1
 714
 715                                 let m = matchlist(line, g:notmuch_show_message_parse_regexp)
 716                                 if len(m)
 717                                         let msg['id'] = m[1]
 718                                         let msg['depth'] = m[2]
 719                                         let msg['filename'] = m[3]
 720                                 endif
 721
 722                                 let in_message = 1
 723                         endif
 724                 endif
 725
 726                 if len(foldinfo) && foldinfo[1] < foldinfo[2]
 727                         call add(info['folds'], foldinfo[0:2])
 728                         let info['foldtext'][foldinfo[1]] = foldinfo[3]
 729                 endif
 730         endfor
 731         return info
 732 endfunction
 733
 734 function! s:NM_cmd_show_mkfolds()
 735         let info = b:nm_raw_info
 736
 737         for afold in info['folds']
 738                 exec printf('%d,%dfold', afold[1], afold[2])
 739                 if (afold[0] == 'sig' && g:notmuch_show_fold_signatures)
 740                  \ || (afold[0] == 'cit' && g:notmuch_show_fold_citations)
 741                  \ || (afold[0] == 'bdy' && g:notmuch_show_fold_bodies)
 742                  \ || (afold[0] == 'hdr' && g:notmuch_show_fold_headers)
 743                         exec printf('%dfoldclose', afold[1])
 744                 else
 745                         exec printf('%dfoldopen', afold[1])
 746                 endif
 747         endfor
 748 endfunction
 749
 750 function! s:NM_cmd_show_mksyntax()
 751         let info = b:nm_raw_info
 752         let cnt = 0
 753         for msg in info['msgs']
 754                 let cnt = cnt + 1
 755                 let start = msg['start']
 756                 let hdr_start = msg['hdr_start']
 757                 let body_start = msg['body_start']
 758                 let end = msg['end']
 759                 exec printf('syntax region nmShowMsg%dDesc start=''\%%%dl'' end=''\%%%dl'' contains=@nmShowMsgDesc', cnt, start, start+1)
 760                 exec printf('syntax region nmShowMsg%dHead start=''\%%%dl'' end=''\%%%dl'' contains=@nmShowMsgHead', cnt, hdr_start, body_start)
 761                 exec printf('syntax region nmShowMsg%dBody start=''\%%%dl'' end=''\%%%dl'' contains=@nmShowMsgBody', cnt, body_start, end)
 762         endfor
 763 endfunction
 764
 765 function! NM_cmd_show_foldtext()
 766         let foldtext = b:nm_raw_info['foldtext']
 767         return foldtext[v:foldstart]
 768 endfunction
 769
 770
 771 " --- notmuch helper functions {{{1
 772
 773 function! s:NM_newBuffer(type, content)
 774         enew
 775         setlocal buftype=nofile readonly modifiable
 776         silent put=a:content
 777         keepjumps 0d
 778         setlocal nomodifiable
 779         execute printf('set filetype=notmuch-%s', a:type)
 780         execute printf('set syntax=notmuch-%s', a:type)
 781         let b:nm_type = a:type
 782 endfunction
 783
 784 function! s:NM_shell_escape(word)
 785         let word = substitute(a:word, '''', '\\''', 'g')
 786         return '''' . word . ''''
 787 endfunction
 788
 789 function! s:NM_run(args)
 790         let words = a:args
 791         call map(words, 's:NM_shell_escape(v:val)')
 792         let cmd = g:notmuch_cmd . ' ' . join(words) . '< /dev/null'
 793
 794         let start = reltime()
 795         let out = system(cmd)
 796         let err = v:shell_error
 797         let delta = reltime(start)
 798
 799         if exists('g:notmuch_debug') && g:notmuch_debug
 800                 echo printf('[%s] {%s} %s', reltimestr(delta), string(err), string(cmd))
 801         endif
 802
 803         if err
 804                 echohl Error
 805                 echo substitute(out, '\n*$', '', '')
 806                 echohl None
 807                 return ''
 808         else
 809                 return out
 810         endif
 811 endfunction
 812
 813 " --- external mail handling helpers {{{1
 814
 815 function! s:NM_new_mail()
 816         echo 'not implemented'
 817 endfunction
 818
 819 " --- other helpers {{{1
 820
 821 function! s:NM_kill_this_buffer()
 822         if exists('b:nm_prev_bufnr')
 823                 setlocal bufhidden=delete
 824                 exec printf(":buffer %d", b:nm_prev_bufnr)
 825         else
 826                 echo "This is the last buffer; use :q<CR> to quit."
 827         endif
 828 endfunction
 829
 830 function! s:NM_search_expand(arg)
 831         let word = expand(a:arg)
 832         let prev_bufnr = bufnr('%')
 833         setlocal bufhidden=hide
 834         call <SID>NM_cmd_search([word])
 835         setlocal bufhidden=delete
 836         let b:nm_prev_bufnr = prev_bufnr
 837 endfunction
 838
 839 function! s:NM_add_remove_tags(prefix, tags)
 840         let id = <SID>NM_search_thread_id()
 841         if id == ''
 842                 echoe 'Eeek! I couldn''t find the thead id!'
 843         endif
 844         call map(a:tags, 'a:prefix . v:val')
 845         " TODO: handle errors
 846         call <SID>NM_run(['tag'] + a:tags + ['--', id])
 847 endfunction
 848
 849 function! s:NM_add_remove_tags_on_screen(prefix, tags)
 850         let online = ''
 851         setlocal modifiable
 852         if a:prefix == '-'
 853                 for tagname in a:tags
 854                         exec printf('silent %ss/(\([^)]*\)\<%s\>\([^)]*\))$/(\1\2)/', online, tagname)
 855                 endfor
 856         else
 857                 for tagname in a:tags
 858                         exec printf('silent %ss/(\([^)]*\)\([^)]*\))$/(\1 %s)/', online, tagname)
 859                 endfor
 860         endif
 861         setlocal nomodifiable
 862 endfunction
 863
 864 " --- process and set the defaults {{{1
 865
 866 function! NM_set_defaults(force)
 867         for [key, dflt] in items(s:notmuch_defaults)
 868                 let cmd = ''
 869                 if !a:force && exists(key) && type(dflt) == type(eval(key))
 870                         continue
 871                 elseif type(dflt) == type(0)
 872                         let cmd = printf('let %s = %d', key, dflt)
 873                 elseif type(dflt) == type('')
 874                         let cmd = printf('let %s = ''%s''', key, dflt)
 875                 " FIXME: not sure why this didn't work when dflt is an array
 876                 "elseif type(dflt) == type([])
 877                 "        let cmd = printf('let %s = %s', key, string(dflt))
 878                 else
 879                         echoe printf('E: Unknown type in NM_set_defaults(%d) using [%s,%s]',
 880                                                 \ a:force, key, string(dflt))
 881                         continue
 882                 endif
 883                 exec cmd
 884         endfor
 885 endfunction
 886 call NM_set_defaults(0)
 887
 888 " for some reason NM_set_defaults() didn't work for arrays...
 889 if !exists('g:notmuch_show_headers')
 890         let g:notmuch_show_headers = s:notmuch_show_headers_defaults
 891 endif
 892 if !exists('g:notmuch_initial_search_words')
 893         let g:notmuch_initial_search_words = s:notmuch_initial_search_words_defaults
 894 endif
 895 if !exists('g:notmuch_folders')
 896         let g:notmuch_folders = s:notmuch_folders_defaults
 897 endif
 898
 899
 900 " --- assign keymaps {{{1
 901
 902 function! s:NM_set_map(maps)
 903         nmapclear
 904         for [key, code] in items(a:maps)
 905                 exec printf('nnoremap <buffer> %s %s', key, code)
 906         endfor
 907         " --- this is a hack for development :)
 908         nnoremap ,nmr :source ~/.vim/plugin/notmuch.vim<CR>:call NotMuch('')<CR>
 909 endfunction
 910
 911 " --- command handler {{{1
 912
 913 function! NotMuch(args)
 914         let args = a:args
 915         if !strlen(args)
 916                 let args = 'folders'
 917         endif
 918
 919         let words = split(args)
 920         if words[0] == 'folders'
 921                 let words = words[1:]
 922                 call <SID>NM_cmd_folders(words)
 923         elseif words[0] == 'search'
 924                 if len(words) > 1
 925                         let words = words[1:]
 926                 elseif exists('b:nm_search_words')
 927                         let words = b:nm_search_words
 928                 else
 929                         let words = g:notmuch_initial_search_words
 930                 endif
 931                 call <SID>NM_cmd_search(words)
 932
 933         elseif words[0] == 'show'
 934                 echoe 'show is not yet implemented.'
 935         endif
 936 endfunction
 937 function! CompleteNotMuch(arg_lead, cmd_line, cursor_pos)
 938         return []
 939 endfunction
 940
 941
 942 " --- glue {{{1
 943
 944 command! -nargs=* -complete=customlist,CompleteNotMuch NotMuch call NotMuch(<q-args>)
 945 cabbrev  notmuch <c-r>=(getcmdtype()==':' && getcmdpos()==1 ? 'NotMuch' : 'notmuch')<CR>
 946
 947 " vim: set ft=vim ts=8 sw=8 et foldmethod=marker :