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"=============================================================================
" Copyright (c) 2007-2010 Takeshi NISHIDA
"
"=============================================================================
" LOAD GUARD {{{1
if !l9#guardScriptLoading(expand('<sfile>:p'), 0, 0, [])
finish
endif
" }}}1
"=============================================================================
" GLOBAL FUNCTIONS {{{1
"
function fuf#help#createHandler(base)
return a:base.concretize(copy(s:handler))
endfunction
"
function fuf#help#getSwitchOrder()
return g:fuf_help_switchOrder
endfunction
"
function fuf#help#getEditableDataNames()
return []
endfunction
"
function fuf#help#renewCache()
let s:cache = {}
endfunction
"
function fuf#help#requiresOnCommandPre()
return 0
endfunction
"
function fuf#help#onInit()
call fuf#defineLaunchCommand('FufHelp' , s:MODE_NAME, '""', [])
call fuf#defineLaunchCommand('FufHelpWithCursorWord', s:MODE_NAME, 'expand(''<cword>'')', [])
endfunction
" }}}1
"=============================================================================
" LOCAL FUNCTIONS/VARIABLES {{{1
let s:MODE_NAME = expand('<sfile>:t:r')
"
function s:getCurrentHelpTagFiles()
let prefix = 'doc' . l9#getPathSeparator()
let tagFiles = split(globpath(&runtimepath, prefix . 'tags' ), "\n")
\ + split(globpath(&runtimepath, prefix . 'tags-??'), "\n")
return sort(map(tagFiles, 'fnamemodify(v:val, ":p")'))
endfunction
"
function s:parseHelpTagEntry(line, tagFile)
let elements = split(a:line, "\t")
if len(elements) != 3 || elements[0][0] ==# '!'
return {}
endif
let suffix = matchstr(a:tagFile, '-\zs..$')
if empty(suffix)
let suffix = '@en'
else
let suffix = '@' . suffix
endif
let dir = fnamemodify(a:tagFile, ':h') . l9#getPathSeparator()
return {
\ 'word' : elements[0] . suffix,
\ 'path' : dir . elements[1],
\ 'pattern': elements[2][1:],
\ }
endfunction
"
function s:getHelpTagEntries(tagFile)
let names = map(l9#readFile(a:tagFile), 's:parseHelpTagEntry(v:val, a:tagFile)')
return filter(names, '!empty(v:val)')
endfunction
"
function s:parseHelpTagFiles(tagFiles, key)
let cacheName = 'cache-' . l9#hash224(a:key)
let cacheTime = fuf#getDataFileTime(s:MODE_NAME, cacheName)
if cacheTime != -1 && fuf#countModifiedFiles(a:tagFiles, cacheTime) == 0
return fuf#loadDataFile(s:MODE_NAME, cacheName)
endif
let items = l9#unique(l9#concat(map(copy(a:tagFiles), 's:getHelpTagEntries(v:val)')))
let items = map(items, 'extend(v:val, fuf#makeNonPathItem(v:val.word, ""))')
call fuf#mapToSetSerialIndex(items, 1)
let items = map(items, 'fuf#setAbbrWithFormattedWord(v:val, 1)')
call fuf#saveDataFile(s:MODE_NAME, cacheName, items)
return items
endfunction
"
function s:enumHelpTags(tagFiles)
if !len(a:tagFiles)
return []
endif
let key = join([g:fuf_ignoreCase] + a:tagFiles, "\n")
if !exists('s:cache[key]') || fuf#countModifiedFiles(a:tagFiles, s:cache[key].time)
let s:cache[key] = {
\ 'time' : localtime(),
\ 'items' : s:parseHelpTagFiles(a:tagFiles, key)
\ }
endif
return s:cache[key].items
endfunction
"
function s:getMatchingIndex(lines, pattern)
if empty(a:pattern)
return -1
endif
for i in range(len(a:lines))
if stridx(a:lines[i], a:pattern) >= 0
return i
endif
endfor
return -1
endfunction
" }}}1
"=============================================================================
" s:handler {{{1
let s:handler = {}
"
function s:handler.getModeName()
return s:MODE_NAME
endfunction
"
function s:handler.getPrompt()
return fuf#formatPrompt(g:fuf_help_prompt, self.partialMatching, '')
endfunction
"
function s:handler.getPreviewHeight()
return g:fuf_previewHeight
endfunction
"
function s:handler.isOpenable(enteredPattern)
return 1
endfunction
"
function s:handler.makePatternSet(patternBase)
return fuf#makePatternSet(a:patternBase, 's:interpretPrimaryPatternForNonPath',
\ self.partialMatching)
endfunction
"
function s:handler.makePreviewLines(word, count)
let items = filter(copy(s:enumHelpTags(self.tagFiles)), 'v:val.word ==# a:word')
if empty(items)
return []
endif
let lines = fuf#getFileLines(items[0].path)
let index = s:getMatchingIndex(lines, items[0].pattern)
return [items[0].path . ':'] + fuf#makePreviewLinesAround(
\ lines, (index < 0 ? [] : [index]), a:count, self.getPreviewHeight() - 1)
endfunction
"
function s:handler.getCompleteItems(patternPrimary)
return s:enumHelpTags(self.tagFiles)
endfunction
"
function s:handler.onOpen(word, mode)
call fuf#openHelp(a:word, a:mode)
endfunction
"
function s:handler.onModeEnterPre()
let self.tagFiles = s:getCurrentHelpTagFiles()
endfunction
"
function s:handler.onModeEnterPost()
endfunction
"
function s:handler.onModeLeavePost(opened)
endfunction
" }}}1
"=============================================================================
" vim: set fdm=marker:
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