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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:\([0-9]*\) match:\([0-9]*\) 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, 0)<CR>',
 114         \ '<C-N>':      ':call <SID>NM_show_next(1, 0)<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, find_matching)
 403         let info = b:nm_raw_info
 404         let lnum = line('.')
 405         for msg in reverse(copy(info['msgs']))
 406                 if a:find_matching && msg['match'] == '0'
 407                         continue
 408                 endif
 409                 if lnum <= msg['start']
 410                         continue
 411                 endif
 412
 413                 exec printf('norm %dGzt', msg['start'])
 414                 " TODO: try to fit the message on screen
 415                 return
 416         endfor
 417         if !a:can_change_thread
 418                 return
 419         endif
 420         call <SID>NM_kill_this_buffer()
 421         if line('.') > 1
 422                 norm k
 423                 call <SID>NM_search_show_thread()
 424                 norm G
 425                 call <SID>NM_show_previous(0, a:find_matching)
 426         else
 427                 echo 'No more messages.'
 428         endif
 429 endfunction
 430
 431 function! s:NM_show_next(can_change_thread, find_matching)
 432         let info = b:nm_raw_info
 433         let lnum = line('.')
 434         for msg in info['msgs']
 435                 if a:find_matching && msg['match'] == '0'
 436                         continue
 437                 endif
 438                 if lnum >= msg['start']
 439                         continue
 440                 endif
 441
 442                 exec printf('norm %dGzt', msg['start'])
 443                 " TODO: try to fit the message on screen
 444                 return
 445         endfor
 446         if a:can_change_thread
 447                 call <SID>NM_show_next_thread()
 448         endif
 449 endfunction
 450
 451 function! s:NM_show_next_thread()
 452         call <SID>NM_kill_this_buffer()
 453         if line('.') != line('$')
 454                 norm j
 455                 call <SID>NM_search_show_thread()
 456         else
 457                 echo 'No more messages.'
 458         endif
 459 endfunction
 460
 461 function! s:NM_show_archive_thread()
 462         echo 'not implemented'
 463 endfunction
 464
 465 function! s:NM_show_mark_read_then_archive_thread()
 466         echo 'not implemented'
 467 endfunction
 468
 469 function! s:NM_show_mark_read_then_next_open_message()
 470         echo 'not implemented'
 471 endfunction
 472
 473 function! s:NM_show_previous_message()
 474         echo 'not implemented'
 475 endfunction
 476
 477 function! s:NM_show_reply()
 478         echo 'not implemented'
 479 endfunction
 480
 481 function! s:NM_show_view_all_mime_parts()
 482         echo 'not implemented'
 483 endfunction
 484
 485 function! s:NM_show_view_raw_message()
 486         echo 'not implemented'
 487 endfunction
 488
 489 function! s:NM_show_add_tag()
 490         echo 'not implemented'
 491 endfunction
 492
 493 function! s:NM_show_remove_tag()
 494         echo 'not implemented'
 495 endfunction
 496
 497 function! s:NM_show_advance_marking_read_and_archiving()
 498         echo 'not implemented'
 499 endfunction
 500
 501 function! s:NM_show_pipe_message()
 502         echo 'not implemented'
 503 endfunction
 504
 505 function! s:NM_show_previous_fold()
 506         echo 'not implemented'
 507 endfunction
 508
 509 function! s:NM_show_next_fold()
 510         echo 'not implemented'
 511 endfunction
 512
 513 function! s:NM_show_toggle_fold()
 514         echo 'not implemented'
 515 endfunction
 516
 517
 518 " --- --- show screen helper functions {{{2
 519
 520 function! s:NM_show_message_id()
 521         if !exists('b:nm_raw_info')
 522                 echoe 'no b:nm_raw_info'
 523                 return ''
 524         endif
 525         let info = b:nm_raw_info
 526         let lnum = line('.')
 527         for msg in info['msgs']
 528                 if lnum > msg['end']
 529                         continue
 530                 endif
 531                 if has_key(msg,'id')
 532                         return msg['id']
 533                 endif
 534                 return ''
 535         endfor
 536         return ''
 537 endfunction
 538
 539 function! s:NM_show_search_words()
 540         if !exists('b:nm_words')
 541                 echoe 'no b:nm_words'
 542                 return []
 543         endif
 544         return b:nm_words
 545 endfunction
 546
 547 function! s:NM_show_fold_toggle(key, type, fold)
 548         let info = b:nm_raw_info
 549         let act = 'open'
 550         if a:fold
 551                 let act = 'close'
 552         endif
 553         for fld in info['folds']
 554                 if fld[0] == a:type
 555                         exec printf('%dfold%s', fld[1], act)
 556                 endif
 557         endfor
 558         exec printf('nnoremap <buffer> %s :call <SID>NM_show_fold_toggle(''%s'', ''%s'', %d)<CR>', a:key, a:key, a:type, !a:fold)
 559 endfunction
 560
 561
 562 " s:NM_cmd_show_parse returns the following dictionary:
 563 "    'disp':     lines to display
 564 "    'msgs':     message info dicts { start, end, id, depth, filename, descr, header }
 565 "    'folds':    fold info arrays [ type, start, end ]
 566 "    'foldtext': fold text indexed by start line
 567 function! s:NM_cmd_show_parse(inlines)
 568         let info = { 'disp': [],
 569                    \ 'msgs': [],
 570                    \ 'folds': [],
 571                    \ 'foldtext': {} }
 572         let msg = {}
 573         let hdr = {}
 574
 575         let in_message = 0
 576         let in_header = 0
 577         let in_body = 0
 578         let in_part = ''
 579
 580         let body_start = -1
 581         let part_start = -1
 582
 583         let mode_type = ''
 584         let mode_start = -1
 585
 586         let inlnum = 0
 587         for line in a:inlines
 588                 let inlnum = inlnum + 1
 589                 let foldinfo = []
 590
 591                 if strlen(in_part)
 592                         let part_end = 0
 593
 594                         if match(line, g:notmuch_show_part_end_regexp) != -1
 595                                 let part_end = len(info['disp'])
 596                         else
 597                                 call add(info['disp'], line)
 598                         endif
 599
 600                         if in_part == 'text/plain'
 601                                 if !part_end && mode_type == ''
 602                                         if match(line, g:notmuch_show_signature_regexp) != -1
 603                                                 let mode_type = 'sig'
 604                                                 let mode_start = len(info['disp'])
 605                                         elseif match(line, g:notmuch_show_citation_regexp) != -1
 606                                                 let mode_type = 'cit'
 607                                                 let mode_start = len(info['disp'])
 608                                         endif
 609                                 elseif mode_type == 'cit'
 610                                         if part_end || match(line, g:notmuch_show_citation_regexp) == -1
 611                                                 let outlnum = len(info['disp'])
 612                                                 let foldinfo = [ mode_type, mode_start, outlnum-1, len(info['msgs']),
 613                                                                \ printf('[ %d-line citation.  Press "c" to show. ]', outlnum - mode_start) ]
 614                                                 let mode_type = ''
 615                                         endif
 616                                 elseif mode_type == 'sig'
 617                                         let outlnum = len(info['disp'])
 618                                         if (outlnum - mode_start) > g:notmuch_show_signature_lines_max
 619                                                 let mode_type = ''
 620                                         elseif part_end
 621                                                 let foldinfo = [ mode_type, mode_start, outlnum-1, len(info['msgs']),
 622                                                                \ printf('[ %d-line signature.  Press "s" to show. ]', outlnum - mode_start) ]
 623                                                 let mode_type = ''
 624                                         endif
 625                                 endif
 626                         endif
 627
 628                         if part_end
 629                                 " FIXME: this is a hack for handling two folds being added for one line
 630                                 "         we should handle addinga fold in a function
 631                                 if len(foldinfo) && foldinfo[1] < foldinfo[2]
 632                                         call add(info['folds'], foldinfo[0:3])
 633                                         let info['foldtext'][foldinfo[1]] = foldinfo[4]
 634                                 endif
 635
 636                                 let foldinfo = [ 'text', part_start, part_end, len(info['msgs']),
 637                                                \ printf('[ %d-line %s.  Press "p" to show. ]', part_end - part_start, in_part) ]
 638                                 let in_part = ''
 639                                 call add(info['disp'], '')
 640                         endif
 641
 642                 elseif in_body
 643                         if !has_key(msg,'body_start')
 644                                 let msg['body_start'] = len(info['disp']) + 1
 645                         endif
 646                         if match(line, g:notmuch_show_body_end_regexp) != -1
 647                                 let body_end = len(info['disp'])
 648                                 let foldinfo = [ 'bdy', body_start, body_end, len(info['msgs']),
 649                                                \ printf('[ BODY %d - %d lines ]', len(info['msgs']), body_end - body_start) ]
 650
 651                                 let in_body = 0
 652
 653                         elseif match(line, g:notmuch_show_part_begin_regexp) != -1
 654                                 let m = matchlist(line, 'ID: \(\d\+\), Content-type: \(\S\+\)')
 655                                 let in_part = 'unknown'
 656                                 if len(m)
 657                                         let in_part = m[2]
 658                                 endif
 659                                 call add(info['disp'],
 660                                          \ printf('--- %s ---', in_part))
 661                                 let part_start = len(info['disp']) + 1
 662                         endif
 663
 664                 elseif in_header
 665                         if in_header == 1
 666                                 let msg['descr'] = line
 667                                 call add(info['disp'], line)
 668                                 let in_header = 2
 669                                 let msg['hdr_start'] = len(info['disp']) + 1
 670
 671                         else
 672                                 if match(line, g:notmuch_show_header_end_regexp) != -1
 673                                         let hdr_start = msg['hdr_start']+1
 674                                         let hdr_end = len(info['disp'])
 675                                         let foldinfo = [ 'hdr', hdr_start, hdr_end, len(info['msgs']),
 676                                                \ printf('[ %d-line headers.  Press "h" to show. ]', hdr_end + 1 - hdr_start) ]
 677                                         let msg['header'] = hdr
 678                                         let in_header = 0
 679                                         let hdr = {}
 680                                 else
 681                                         let m = matchlist(line, '^\(\w\+\):\s*\(.*\)$')
 682                                         if len(m)
 683                                                 let hdr[m[1]] = m[2]
 684                                                 if match(g:notmuch_show_headers, m[1]) != -1
 685                                                         call add(info['disp'], line)
 686                                                 endif
 687                                         endif
 688                                 endif
 689                         endif
 690
 691                 elseif in_message
 692                         if match(line, g:notmuch_show_message_end_regexp) != -1
 693                                 let msg['end'] = len(info['disp'])
 694                                 call add(info['disp'], '')
 695
 696                                 let foldinfo = [ 'msg', msg['start'], msg['end'], len(info['msgs']),
 697                                                \ printf('[ MSG %d - %s ]', len(info['msgs']), msg['descr']) ]
 698
 699                                 call add(info['msgs'], msg)
 700                                 let msg = {}
 701                                 let in_message = 0
 702                                 let in_header = 0
 703                                 let in_body = 0
 704                                 let in_part = ''
 705
 706                         elseif match(line, g:notmuch_show_header_begin_regexp) != -1
 707                                 let in_header = 1
 708                                 continue
 709
 710                         elseif match(line, g:notmuch_show_body_begin_regexp) != -1
 711                                 let body_start = len(info['disp']) + 1
 712                                 let in_body = 1
 713                                 continue
 714                         endif
 715
 716                 else
 717                         if match(line, g:notmuch_show_message_begin_regexp) != -1
 718                                 let msg['start'] = len(info['disp']) + 1
 719
 720                                 let m = matchlist(line, g:notmuch_show_message_parse_regexp)
 721                                 if len(m)
 722                                         let msg['id'] = m[1]
 723                                         let msg['depth'] = m[2]
 724                                         let msg['match'] = m[3]
 725                                         let msg['filename'] = m[4]
 726                                 endif
 727
 728                                 let in_message = 1
 729                         endif
 730                 endif
 731
 732                 if len(foldinfo) && foldinfo[1] < foldinfo[2]
 733                         call add(info['folds'], foldinfo[0:3])
 734                         let info['foldtext'][foldinfo[1]] = foldinfo[4]
 735                 endif
 736         endfor
 737         return info
 738 endfunction
 739
 740 function! s:NM_cmd_show_mkfolds()
 741         let info = b:nm_raw_info
 742
 743         for afold in info['folds']
 744                 exec printf('%d,%dfold', afold[1], afold[2])
 745                 let state = 'open'
 746                 if (afold[0] == 'sig' && g:notmuch_show_fold_signatures)
 747                  \ || (afold[0] == 'cit' && g:notmuch_show_fold_citations)
 748                  \ || (afold[0] == 'bdy' && g:notmuch_show_fold_bodies)
 749                  \ || (afold[0] == 'hdr' && g:notmuch_show_fold_headers)
 750                         let state = 'close'
 751                 elseif afold[0] == 'msg'
 752                         let idx = afold[3]
 753                         let msg = info['msgs'][idx]
 754                         if has_key(msg,'match') && msg['match'] == '0'
 755                                 let state = 'close'
 756                         endif
 757                 endif
 758                 exec printf('%dfold%s', afold[1], state)
 759         endfor
 760 endfunction
 761
 762 function! s:NM_cmd_show_mksyntax()
 763         let info = b:nm_raw_info
 764         let cnt = 0
 765         for msg in info['msgs']
 766                 let cnt = cnt + 1
 767                 let start = msg['start']
 768                 let hdr_start = msg['hdr_start']
 769                 let body_start = msg['body_start']
 770                 let end = msg['end']
 771                 exec printf('syntax region nmShowMsg%dDesc start=''\%%%dl'' end=''\%%%dl'' contains=@nmShowMsgDesc', cnt, start, start+1)
 772                 exec printf('syntax region nmShowMsg%dHead start=''\%%%dl'' end=''\%%%dl'' contains=@nmShowMsgHead', cnt, hdr_start, body_start)
 773                 exec printf('syntax region nmShowMsg%dBody start=''\%%%dl'' end=''\%%%dl'' contains=@nmShowMsgBody', cnt, body_start, end)
 774         endfor
 775 endfunction
 776
 777 function! NM_cmd_show_foldtext()
 778         let foldtext = b:nm_raw_info['foldtext']
 779         return foldtext[v:foldstart]
 780 endfunction
 781
 782
 783 " --- notmuch helper functions {{{1
 784
 785 function! s:NM_newBuffer(type, content)
 786         enew
 787         setlocal buftype=nofile readonly modifiable
 788         silent put=a:content
 789         keepjumps 0d
 790         setlocal nomodifiable
 791         execute printf('set filetype=notmuch-%s', a:type)
 792         execute printf('set syntax=notmuch-%s', a:type)
 793         let b:nm_type = a:type
 794 endfunction
 795
 796 function! s:NM_shell_escape(word)
 797         let word = substitute(a:word, '''', '\\''', 'g')
 798         return '''' . word . ''''
 799 endfunction
 800
 801 function! s:NM_run(args)
 802         let words = a:args
 803         call map(words, 's:NM_shell_escape(v:val)')
 804         let cmd = g:notmuch_cmd . ' ' . join(words) . '< /dev/null'
 805
 806         let start = reltime()
 807         let out = system(cmd)
 808         let err = v:shell_error
 809         let delta = reltime(start)
 810
 811         if exists('g:notmuch_debug') && g:notmuch_debug
 812                 echo printf('[%s] {%s} %s', reltimestr(delta), string(err), string(cmd))
 813         endif
 814
 815         if err
 816                 echohl Error
 817                 echo substitute(out, '\n*$', '', '')
 818                 echohl None
 819                 return ''
 820         else
 821                 return out
 822         endif
 823 endfunction
 824
 825 " --- external mail handling helpers {{{1
 826
 827 function! s:NM_new_mail()
 828         echo 'not implemented'
 829 endfunction
 830
 831 " --- other helpers {{{1
 832
 833 function! s:NM_kill_this_buffer()
 834         if exists('b:nm_prev_bufnr')
 835                 setlocal bufhidden=delete
 836                 exec printf(":buffer %d", b:nm_prev_bufnr)
 837         else
 838                 echo "This is the last buffer; use :q<CR> to quit."
 839         endif
 840 endfunction
 841
 842 function! s:NM_search_expand(arg)
 843         let word = expand(a:arg)
 844         let prev_bufnr = bufnr('%')
 845         setlocal bufhidden=hide
 846         call <SID>NM_cmd_search([word])
 847         setlocal bufhidden=delete
 848         let b:nm_prev_bufnr = prev_bufnr
 849 endfunction
 850
 851 function! s:NM_add_remove_tags(filter, prefix, tags)
 852         let filter = len(a:filter) ? a:filter : [<SID>NM_search_thread_id()]
 853         if !len(filter)
 854                 echoe 'Eeek! I couldn''t find the thead id!'
 855         endif
 856         echo 'filter = ' . string(filter) . ' ... ' . string(type(filter))
 857         call map(a:tags, 'a:prefix . v:val')
 858         " TODO: handle errors
 859         let args = ['tag']
 860         call extend(args, a:tags)
 861         call add(args, '--')
 862         call extend(args, filter)
 863         echo 'NUM_run( ' . string(args) . ' )'
 864         call <SID>NM_run(args)
 865 endfunction
 866
 867 function! s:NM_add_remove_tags_on_screen(online, prefix, tags)
 868         setlocal modifiable
 869         if a:prefix == '-'
 870                 for tagname in a:tags
 871                         exec printf('silent! %ss/(\([^)]*\)\<%s\>\([^)]*\))$/(\1\2)/', string(a:online), tagname)
 872                 endfor
 873         else
 874                 for tagname in a:tags
 875                         exec printf('silent! %ss/(\([^)]*\)\([^)]*\))$/(\1 %s)/', string(a:online), tagname)
 876                 endfor
 877         endif
 878         setlocal nomodifiable
 879 endfunction
 880
 881 " --- process and set the defaults {{{1
 882
 883 function! NM_set_defaults(force)
 884         for [key, dflt] in items(s:notmuch_defaults)
 885                 let cmd = ''
 886                 if !a:force && exists(key) && type(dflt) == type(eval(key))
 887                         continue
 888                 elseif type(dflt) == type(0)
 889                         let cmd = printf('let %s = %d', key, dflt)
 890                 elseif type(dflt) == type('')
 891                         let cmd = printf('let %s = ''%s''', key, dflt)
 892                 " FIXME: not sure why this didn't work when dflt is an array
 893                 "elseif type(dflt) == type([])
 894                 "        let cmd = printf('let %s = %s', key, string(dflt))
 895                 else
 896                         echoe printf('E: Unknown type in NM_set_defaults(%d) using [%s,%s]',
 897                                                 \ a:force, key, string(dflt))
 898                         continue
 899                 endif
 900                 exec cmd
 901         endfor
 902 endfunction
 903 call NM_set_defaults(0)
 904
 905 " for some reason NM_set_defaults() didn't work for arrays...
 906 if !exists('g:notmuch_show_headers')
 907         let g:notmuch_show_headers = s:notmuch_show_headers_defaults
 908 endif
 909 if !exists('g:notmuch_initial_search_words')
 910         let g:notmuch_initial_search_words = s:notmuch_initial_search_words_defaults
 911 endif
 912 if !exists('g:notmuch_folders')
 913         let g:notmuch_folders = s:notmuch_folders_defaults
 914 endif
 915
 916
 917 " --- assign keymaps {{{1
 918
 919 function! s:NM_set_map(maps)
 920         nmapclear
 921         for [key, code] in items(a:maps)
 922                 exec printf('nnoremap <buffer> %s %s', key, code)
 923         endfor
 924         " --- this is a hack for development :)
 925         nnoremap ,nmr :source ~/.vim/plugin/notmuch.vim<CR>:call NotMuch('')<CR>
 926 endfunction
 927
 928 " --- command handler {{{1
 929
 930 function! NotMuch(args)
 931         let args = a:args
 932         if !strlen(args)
 933                 let args = 'folders'
 934         endif
 935
 936         let words = split(args)
 937         if words[0] == 'folders'
 938                 let words = words[1:]
 939                 call <SID>NM_cmd_folders(words)
 940         elseif words[0] == 'search'
 941                 if len(words) > 1
 942                         let words = words[1:]
 943                 elseif exists('b:nm_search_words')
 944                         let words = b:nm_search_words
 945                 else
 946                         let words = g:notmuch_initial_search_words
 947                 endif
 948                 call <SID>NM_cmd_search(words)
 949
 950         elseif words[0] == 'show'
 951                 echoe 'show is not yet implemented.'
 952         endif
 953 endfunction
 954 function! CompleteNotMuch(arg_lead, cmd_line, cursor_pos)
 955         return []
 956 endfunction
 957
 958
 959 " --- glue {{{1
 960
 961 command! -nargs=* -complete=customlist,CompleteNotMuch NotMuch call NotMuch(<q-args>)
 962 cabbrev  notmuch <c-r>=(getcmdtype()==':' && getcmdpos()==1 ? 'NotMuch' : 'notmuch')<CR>
 963
 964 " vim: set ft=vim ts=8 sw=8 et foldmethod=marker :