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" config which can be overridden (shared lines)
if !exists('g:snipMate')
  let g:snipMate = {}
endif
let s:c = g:snipMate

try
call tlib#input#List('mi', '', [])
catch /.*/
echoe "you're missing tlib. See install instructions at ".expand('<sfile>:h:h').'/README.rst'
endtry


" disable write cache in files
" some people get errors about writing the cache files. Probably there is no
" pay off having slow disks anyway. So disabling the cache by default
let s:c.cache_parsed_snippets_on_disk = get(s:c, 'cache_parsed_snippets_on_disk', 0)
let s:c.read_snippets_cached = get(s:c, 'read_snippets_cached', {'func' : function('snipMate#ReadSnippetsFile'), 'version': 3, 'use_file_cache': s:c.cache_parsed_snippets_on_disk})

" if filetype is objc, cpp, or cs also append snippets from scope 'c'
" you can add multiple by separating scopes by ',', see s:AddScopeAliases
" TODO add documentation to doc/*
let s:c.scope_aliases = get(s:c, 'scope_aliases', {})
let s:c.scope_aliases.objc = get(s:c.scope_aliases, 'objc', 'c')
let s:c.scope_aliases.cpp = get(s:c.scope_aliases, 'cpp', 'c')
let s:c.scope_aliases.cs = get(s:c.scope_aliases, 'cs','c')
let s:c.scope_aliases.xhtml = get(s:c.scope_aliases, 'xhtml', 'html')
let s:c.scope_aliases.html = get(s:c.scope_aliases, 'html', 'javascript')
let s:c.scope_aliases.php = get(s:c.scope_aliases, 'php', 'php,html,javascript')
let s:c.scope_aliases.ur = get(s:c.scope_aliases, 'ur', 'html,javascript')
let s:c.scope_aliases.mxml = get(s:c.scope_aliases, 'mxml', 'actionscript')
let s:c.scope_aliases.eruby = get(s:c.scope_aliases, 'eruby', 'eruby-rails,html')

" set this to "\<tab>" to make snipmate not swallow tab (make sure to not have
" expandtab set). Remember that you can always enter tabs by <c-v> <tab> then
" you don't need this
let s:c['no_match_completion_feedkeys_chars'] = get(s:c, 'no_match_completion_feedkeys_chars', "\t")

fun! Filename(...)
let filename = expand('%:t:r')
if filename == '' | return a:0 == 2 ? a:2 : '' | endif
return !a:0 || a:1 == '' ? filename : substitute(a:1, '$1', filename, 'g')
endf

fun! s:RemoveSnippet()
unl! g:snipPos s:curPos s:snipLen s:endCol s:endLine s:prevLen
\ s:lastBuf s:oldWord
if exists('s:update')
unl s:startCol s:origWordLen s:update
if exists('s:oldVars') | unl s:oldVars s:oldEndCol | endif
endif
aug! snipMateAutocmds
endf

fun! snipMate#expandSnip(snip, col)
let lnum = line('.') | let col = a:col

let snippet = s:ProcessSnippet(a:snip)
" Avoid error if eval evaluates to nothing
if snippet == '' | return '' | endif

" Expand snippet onto current position with the tab stops removed
let snipLines = split(substitute(snippet, '$\d\+\|${\d\+.\{-}}', '', 'g'), "\n", 1)

let line = getline(lnum)
let afterCursor = strpart(line, col - 1)
" Keep text after the cursor
if afterCursor != "\t" && afterCursor != ' '
let line = strpart(line, 0, col - 1)
let snipLines[-1] .= afterCursor
else
let afterCursor = ''
" For some reason the cursor needs to move one right after this
if line != '' && col == 1 && &ve != 'all' && &ve != 'onemore'
let col += 1
endif
endif

call setline(lnum, line.snipLines[0])

" Autoindent snippet according to previous indentation
let indent = matchend(line, '^.\{-}\ze\(\S\|$\)') + 1
call append(lnum, map(snipLines[1:], "'".strpart(line, 0, indent - 1)."'.v:val"))

" Open any folds snippet expands into
if &fen | sil! exe lnum.','.(lnum + len(snipLines) - 1).'foldopen' | endif

let [g:snipPos, s:snipLen] = s:BuildTabStops(snippet, lnum, col - indent, indent)

if s:snipLen
aug snipMateAutocmds
au CursorMovedI * call s:UpdateChangedSnip(0)
au InsertEnter * call s:UpdateChangedSnip(1)
aug END
let s:lastBuf = bufnr(0) " Only expand snippet while in current buffer
let s:curPos = 0
let s:endCol = g:snipPos[s:curPos][1]
let s:endLine = g:snipPos[s:curPos][0]

call cursor(g:snipPos[s:curPos][0], g:snipPos[s:curPos][1])
let s:prevLen = [line('$'), col('$')]
if g:snipPos[s:curPos][2] != -1 | return s:SelectWord() | endif
else
unl g:snipPos s:snipLen
" Place cursor at end of snippet if no tab stop is given
let newlines = len(snipLines) - 1
call cursor(lnum + newlines, indent + len(snipLines[-1]) - len(afterCursor)
\ + (newlines ? 0: col - 1))
endif
return ''
endf

" Prepare snippet to be processed by s:BuildTabStops
fun! s:ProcessSnippet(snip)
let snippet = a:snip

if exists('g:snipmate_content_visual')
let visual = g:snipmate_content_visual | unlet g:snipmate_content_visual
else
let visual = ''
endif
let snippet = substitute(snippet,'{VISUAL}', escape(visual,'%\'), 'g')

" Evaluate eval (`...`) expressions.
" Backquotes prefixed with a backslash "\" are ignored.
" And backslash can be escaped by doubling it.
" Using a loop here instead of a regex fixes a bug with nested "\=".
if stridx(snippet, '`') != -1
let new = []
let snip = split(snippet, '\%(\\\@<!\%(\\\\\)*\)\@<=`', 1)
let isexp = 0
for i in snip
if isexp
call add(new, substitute(eval(i), "\n\\%$", '', ''))
else
call add(new, i)
endif
let isexp = !isexp
endfor
let snippet = join(new, '')
let snippet = substitute(snippet, "\r", "\n", 'g')
let snippet = substitute(snippet, '\\`', "`", 'g')
let snippet = substitute(snippet, '\\\\', "\\", 'g')
endif

" Place all text after a colon in a tab stop after the tab stop
" (e.g. "${#:foo}" becomes "${:foo}foo").
" This helps tell the position of the tab stops later.
let snippet = substitute(snippet, '${\d\+:\(.\{-}\)}', '&\1', 'g')

" Update the a:snip so that all the $# become the text after
" the colon in their associated ${#}.
" (e.g. "${1:foo}" turns all "$1"'s into "foo")
let i = 1
while stridx(snippet, '${'.i) != -1
let s = matchstr(snippet, '${'.i.':\zs.\{-}\ze}')
if s != ''
let snippet = substitute(snippet, '$'.i, s.'&', 'g')
endif
let i += 1
endw

if &et " Expand tabs to spaces if 'expandtab' is set.
return substitute(snippet, '\t', repeat(' ', &sts ? &sts : &sw), 'g')
endif
return snippet
endf

" Counts occurences of haystack in needle
fun! s:Count(haystack, needle)
let counter = 0
let index = stridx(a:haystack, a:needle)
while index != -1
let index = stridx(a:haystack, a:needle, index+1)
let counter += 1
endw
return counter
endf

" Builds a list of a list of each tab stop in the snippet containing:
" 1.) The tab stop's line number.
" 2.) The tab stop's column number
" (by getting the length of the string between the last "\n" and the
" tab stop).
" 3.) The length of the text after the colon for the current tab stop
" (e.g. "${1:foo}" would return 3). If there is no text, -1 is returned.
" 4.) If the "${#:}" construct is given, another list containing all
" the matches of "$#", to be replaced with the placeholder. This list is
" composed the same way as the parent; the first item is the line number,
" and the second is the column.
fun! s:BuildTabStops(snip, lnum, col, indent)
let snipPos = []
let i = 1
let withoutVars = substitute(a:snip, '$\d\+', '', 'g')
while stridx(a:snip, '${'.i) != -1
let beforeTabStop = matchstr(withoutVars, '^.*\ze${'.i.'\D')
let withoutOthers = substitute(withoutVars, '${\('.i.'\D\)\@!\d\+.\{-}}', '', 'g')

let j = i - 1
call add(snipPos, [0, 0, -1])
let snipPos[j][0] = a:lnum + s:Count(beforeTabStop, "\n")
let snipPos[j][1] = a:indent + len(matchstr(withoutOthers, '.*\(\n\|^\)\zs.*\ze${'.i.'\D'))
if snipPos[j][0] == a:lnum | let snipPos[j][1] += a:col | endif

" Get all $# matches in another list, if ${#:name} is given
if stridx(withoutVars, '${'.i.':') != -1
let snipPos[j][2] = len(matchstr(withoutVars, '${'.i.':\zs.\{-}\ze}'))
let dots = repeat('.', snipPos[j][2])
call add(snipPos[j], [])
let withoutOthers = substitute(a:snip, '${\d\+.\{-}}\|$'.i.'\@!\d\+', '', 'g')
while match(withoutOthers, '$'.i.'\(\D\|$\)') != -1
let beforeMark = matchstr(withoutOthers, '^.\{-}\ze'.dots.'$'.i.'\(\D\|$\)')
call add(snipPos[j][3], [0, 0])
let snipPos[j][3][-1][0] = a:lnum + s:Count(beforeMark, "\n")
let snipPos[j][3][-1][1] = a:indent + (snipPos[j][3][-1][0] > a:lnum
\ ? len(matchstr(beforeMark, '.*\n\zs.*'))
\ : a:col + len(beforeMark))
let withoutOthers = substitute(withoutOthers, '$'.i.'\ze\(\D\|$\)', '', '')
endw
endif
let i += 1
endw
return [snipPos, i - 1]
endf

fun! snipMate#jumpTabStop(backwards)
let leftPlaceholder = exists('s:origWordLen')
\ && s:origWordLen != g:snipPos[s:curPos][2]
if leftPlaceholder && exists('s:oldEndCol')
let startPlaceholder = s:oldEndCol + 1
endif

if exists('s:update')
call s:UpdatePlaceholderTabStops()
else
call s:UpdateTabStops()
endif

" Don't reselect placeholder if it has been modified
if leftPlaceholder && g:snipPos[s:curPos][2] != -1
if exists('startPlaceholder')
let g:snipPos[s:curPos][1] = startPlaceholder
else
let g:snipPos[s:curPos][1] = col('.')
let g:snipPos[s:curPos][2] = 0
endif
endif

let s:curPos += a:backwards ? -1 : 1
" Loop over the snippet when going backwards from the beginning
if s:curPos < 0 | let s:curPos = s:snipLen - 1 | endif

if s:curPos == s:snipLen
let sMode = s:endCol == g:snipPos[s:curPos-1][1]+g:snipPos[s:curPos-1][2]
call s:RemoveSnippet()
return sMode ? "\<tab>" : snipMate#TriggerSnippet()
endif

call cursor(g:snipPos[s:curPos][0], g:snipPos[s:curPos][1])

let s:endLine = g:snipPos[s:curPos][0]
let s:endCol = g:snipPos[s:curPos][1]
let s:prevLen = [line('$'), col('$')]

return g:snipPos[s:curPos][2] == -1 ? '' : s:SelectWord()
endf

fun! s:UpdatePlaceholderTabStops()
let changeLen = s:origWordLen - g:snipPos[s:curPos][2]
unl s:startCol s:origWordLen s:update
if !exists('s:oldVars') | return | endif
" Update tab stops in snippet if text has been added via "$#"
" (e.g., in "${1:foo}bar$1${2}").
if changeLen != 0
let curLine = line('.')

for pos in g:snipPos
if pos == g:snipPos[s:curPos] | continue | endif
let changed = pos[0] == curLine && pos[1] > s:oldEndCol
let changedVars = 0
let endPlaceholder = pos[2] - 1 + pos[1]
" Subtract changeLen from each tab stop that was after any of
" the current tab stop's placeholders.
for [lnum, col] in s:oldVars
if lnum > pos[0] | break | endif
if pos[0] == lnum
if pos[1] > col || (pos[2] == -1 && pos[1] == col)
let changed += 1
elseif col < endPlaceholder
let changedVars += 1
endif
endif
endfor
let pos[1] -= changeLen * changed
let pos[2] -= changeLen * changedVars " Parse variables within placeholders
" e.g., "${1:foo} ${2:$1bar}"

if pos[2] == -1 | continue | endif
" Do the same to any placeholders in the other tab stops.
for nPos in pos[3]
let changed = nPos[0] == curLine && nPos[1] > s:oldEndCol
for [lnum, col] in s:oldVars
if lnum > nPos[0] | break | endif
if nPos[0] == lnum && nPos[1] > col
let changed += 1
endif
endfor
let nPos[1] -= changeLen * changed
endfor
endfor
endif
unl s:endCol s:oldVars s:oldEndCol
endf

fun! s:UpdateTabStops()
let changeLine = s:endLine - g:snipPos[s:curPos][0]
let changeCol = s:endCol - g:snipPos[s:curPos][1]
if exists('s:origWordLen')
let changeCol -= s:origWordLen
unl s:origWordLen
endif
let lnum = g:snipPos[s:curPos][0]
let col = g:snipPos[s:curPos][1]
" Update the line number of all proceeding tab stops if <cr> has
" been inserted.
if changeLine != 0
let changeLine -= 1
for pos in g:snipPos
if pos[0] >= lnum
if pos[0] == lnum | let pos[1] += changeCol | endif
let pos[0] += changeLine
endif
if pos[2] == -1 | continue | endif
for nPos in pos[3]
if nPos[0] >= lnum
if nPos[0] == lnum | let nPos[1] += changeCol | endif
let nPos[0] += changeLine
endif
endfor
endfor
elseif changeCol != 0
" Update the column of all proceeding tab stops if text has
" been inserted/deleted in the current line.
for pos in g:snipPos
if pos[1] >= col && pos[0] == lnum
let pos[1] += changeCol
endif
if pos[2] == -1 | continue | endif
for nPos in pos[3]
if nPos[0] > lnum | break | endif
if nPos[0] == lnum && nPos[1] >= col
let nPos[1] += changeCol
endif
endfor
endfor
endif
endf

fun! s:SelectWord()
let s:origWordLen = g:snipPos[s:curPos][2]
let s:oldWord = strpart(getline('.'), g:snipPos[s:curPos][1] - 1,
\ s:origWordLen)
let s:prevLen[1] -= s:origWordLen
if !empty(g:snipPos[s:curPos][3])
let s:update = 1
let s:endCol = -1
let s:startCol = g:snipPos[s:curPos][1] - 1
endif
if !s:origWordLen | return '' | endif
let l = col('.') != 1 ? 'l' : ''
if &sel == 'exclusive'
return "\<esc>".l.'v'.s:origWordLen."l\<c-g>"
endif
return s:origWordLen == 1 ? "\<esc>".l.'gh'
\ : "\<esc>".l.'v'.(s:origWordLen - 1)."l\<c-g>"
endf

" This updates the snippet as you type when text needs to be inserted
" into multiple places (e.g. in "${1:default text}foo$1bar$1",
" "default text" would be highlighted, and if the user types something,
" UpdateChangedSnip() would be called so that the text after "foo" & "bar"
" are updated accordingly)
"
" It also automatically quits the snippet if the cursor is moved out of it
" while in insert mode.
fun! s:UpdateChangedSnip(entering)
if exists('g:snipPos') && bufnr(0) != s:lastBuf
call s:RemoveSnippet()
elseif exists('s:update') " If modifying a placeholder
if !exists('s:oldVars') && s:curPos + 1 < s:snipLen
" Save the old snippet & word length before it's updated
" s:startCol must be saved too, in case text is added
" before the snippet (e.g. in "foo$1${2}bar${1:foo}").
let s:oldEndCol = s:startCol
let s:oldVars = deepcopy(g:snipPos[s:curPos][3])
endif
let col = col('.') - 1

if s:endCol != -1
let changeLen = col('$') - s:prevLen[1]
let s:endCol += changeLen
else " When being updated the first time, after leaving select mode
if a:entering | return | endif
let s:endCol = col - 1
endif

" If the cursor moves outside the snippet, quit it
if line('.') != g:snipPos[s:curPos][0] || col < s:startCol ||
\ col - 1 > s:endCol
unl! s:startCol s:origWordLen s:oldVars s:update
return s:RemoveSnippet()
endif

call s:UpdateVars()
let s:prevLen[1] = col('$')
elseif exists('g:snipPos')
if !a:entering && g:snipPos[s:curPos][2] != -1
let g:snipPos[s:curPos][2] = -2
endif

let col = col('.')
let lnum = line('.')
let changeLine = line('$') - s:prevLen[0]

if lnum == s:endLine
let s:endCol += col('$') - s:prevLen[1]
let s:prevLen = [line('$'), col('$')]
endif
if changeLine != 0
let s:endLine += changeLine
let s:endCol = col
endif

" Delete snippet if cursor moves out of it in insert mode
if (lnum == s:endLine && (col > s:endCol || col < g:snipPos[s:curPos][1]))
\ || lnum > s:endLine || lnum < g:snipPos[s:curPos][0]
call s:RemoveSnippet()
endif
endif
endf

" This updates the variables in a snippet when a placeholder has been edited.
" (e.g., each "$1" in "${1:foo} $1bar $1bar")
fun! s:UpdateVars()
let newWordLen = s:endCol - s:startCol + 1
let newWord = strpart(getline('.'), s:startCol, newWordLen)
if newWord == s:oldWord || empty(g:snipPos[s:curPos][3])
return
endif

let changeLen = g:snipPos[s:curPos][2] - newWordLen
let curLine = line('.')
let startCol = col('.')
let oldStartSnip = s:startCol
let updateTabStops = changeLen != 0
let i = 0

for [lnum, col] in g:snipPos[s:curPos][3]
if updateTabStops
let start = s:startCol
if lnum == curLine && col <= start
let s:startCol -= changeLen
let s:endCol -= changeLen
endif
for nPos in g:snipPos[s:curPos][3][(i):]
" This list is in ascending order, so quit if we've gone too far.
if nPos[0] > lnum | break | endif
if nPos[0] == lnum && nPos[1] > col
let nPos[1] -= changeLen
endif
endfor
if lnum == curLine && col > start
let col -= changeLen
let g:snipPos[s:curPos][3][i][1] = col
endif
let i += 1
endif

" "Very nomagic" is used here to allow special characters.
call setline(lnum, substitute(getline(lnum), '\%'.col.'c\V'.
\ escape(s:oldWord, '\'), escape(newWord, '\&'), ''))
endfor
if oldStartSnip != s:startCol
call cursor(0, startCol + s:startCol - oldStartSnip)
endif

let s:oldWord = newWord
let g:snipPos[s:curPos][2] = newWordLen
endf

" should be moved to utils or such?
fun! snipMate#SetByPath(dict, path, value)
let d = a:dict
for p in a:path[:-2]
if !has_key(d,p) | let d[p] = {} | endif
let d = d[p]
endfor
let d[a:path[-1]] = a:value
endf

" reads a .snippets file
" returns list of
" ['triggername', 'name', 'contents']
" if triggername is not set 'default' is assumed
fun! snipMate#ReadSnippetsFile(file)
let result = []
if !filereadable(a:file) | return result | endif
let r_guard = 'guard\s\+\zs.*'
let inSnip = 0
let guard = 1
for line in readfile(a:file) + ["\n"]
if inSnip == 2 && line =~ r_guard
let guard = matchstr(line, r_guard)
elseif inSnip && (line[0] == "\t" || line == '')
let content .= strpart(line, 1)."\n"
continue
elseif inSnip
call add(result, [trigger, name == '' ? 'default' : name, content[:-2], guard])
let inSnip = 0
let guard = "1"
endif

if inSnip == 2
let inSnip = 1
endif
if line[:6] == 'snippet'
" 2 signals first line
let inSnip = 2
let trigger = strpart(line, 8)
let name = ''
let space = stridx(trigger, ' ') + 1
if space " Process multi snip
let name = strpart(trigger, space)
let trigger = strpart(trigger, 0, space - 1)
endif
let content = ''
endif
endfor
return result
endf

" adds scope aliases to list.
" returns new list
" the aliases of aliases are added recursively
fun! s:AddScopeAliases(list)
  let did = {}
  let scope_aliases = get(s:c,'scope_aliases', {})
  let new = a:list
  let new2 = []
  while !empty(new)
for i in new
if !has_key(did, i)
let did[i] = 1
call extend(new2, split(get(scope_aliases,i,''),','))
endif
endfor
let new = new2
let new2 = []
  endwhile
  return keys(did)
endf

" don't ask me wy searching for trigger { is soo slow.
fun! s:Glob(dir, file)
let f = a:dir.a:file
if a:dir =~ '\*' || isdirectory(a:dir)
return split(glob(escape(f,"{}")),"\n")
else
return filereadable(f) ? [f] : []
endif
endf

" returns dict of
" { path: { 'type': one of 'snippet' 'snippets',
" 'exists': 1 or 0
" " for single snippet files:
" 'name': name of snippet
" 'trigger': trigger of snippet
" }
" }
" use trigger = '*' to match all snippet files
" use mustExist = 1 to return existing files only
"
" mustExist = 0 is used by OpenSnippetFiles
fun! snipMate#GetSnippetFiles(mustExist, scopes, trigger)
  let paths = funcref#Call(s:c.snippet_dirs)

  let result = {}
  let scopes = s:AddScopeAliases(a:scopes)

" collect existing files
  for scope in scopes

for r in paths
let rtp_last = fnamemodify(r,':t')

" .snippets files (many snippets per file).
let glob_p = r.'/snippets/'.scope.'.snippets'
for snippetsF in split(glob(glob_p),"\n")
let scope = fnamemodify(snippetsF,':t:r')
let result[snippetsF] = {'exists': 1, 'type': 'snippets', 'name_prefix': rtp_last.' '.scope }
endfor

if !a:mustExist && !has_key(result, glob_p)
" name_prefix not used
let result[glob_p] = {'exists': 0, 'type': 'snippets'}
endif

let glob_p = r.'/snippets/'.scope.'/*.snippets'
for snippetsF in split(glob(glob_p),"\n")
let result[snippetsF] = {'exists': 1, 'type': 'snippets', 'name_prefix' : rtp_last.' '.fnamemodify(snippetsF,':t:r')}
endfor

" == one file per snippet: ==

" without name snippets/<filetype>/<trigger>.snippet
for f in s:Glob(r.'/snippets/'.scope,'/'.a:trigger.'.snippet')
let trigger = fnamemodify(f,':t:r')
let result[f] = {'exists': 1, 'type': 'snippet', 'name': 'default', 'trigger': trigger, 'name_prefix' : rtp_last.' '.scope}
endfor
" add /snippets/trigger/*.snippet files (TODO)

" with name (multi-snip) snippets/<filetype>/<trigger>/<name>.snippet
for f in s:Glob(r.'/snippets/'.scope.'/'.a:trigger,'/*.snippet')
let name = fnamemodify(f,':t:r')
let trigger = fnamemodify(f,':h:t')
let result[f] = {'exists': 1, 'type': 'snippet', 'name': name, 'trigger': trigger, 'name_prefix' : rtp_last.' '.scope}
endfor
endfor
  endfor
  return result
endf

fun! snipMate#EvalGuard(guard)
" left: everything left of expansion
" word: the expanded word
" are guaranteed to be in scpe

if a:guard == '1' | return 1 | endif
let word = s:c.word
" eval is evil, but backticks are allowed anyway.
let left = getline('.')[:col('.')-3 - len(word)]
exec 'return '.a:guard
endf

" default triggers based on paths
fun! snipMate#DefaultPool(scopes, trigger, result)
let triggerR = substitute(a:trigger,'*','.*','g')
for [f,opts] in items(snipMate#GetSnippetFiles(1, a:scopes, a:trigger))
if opts.type == 'snippets'
for [trigger, name, contents, guard] in cached_file_contents#CachedFileContents(f, s:c.read_snippets_cached, 0)
if trigger !~ triggerR | continue | endif
if snipMate#EvalGuard(guard)
call snipMate#SetByPath(a:result, [trigger, opts.name_prefix.' '.name], contents)
endif
endfor
elseif opts.type == 'snippet'
call snipMate#SetByPath(a:result, [opts.trigger, opts.name_prefix.' '.opts.name], funcref#Function('return readfile('.string(f).')'))
else
throw "unexpected"
endif
endfor
endf

" return a dict of snippets found in runtimepath matching trigger
" scopes: list of scopes. usually this is the filetype. eg ['c','cpp']
" trigger may contain glob patterns. Thus use '*' to get all triggers
"
fun! snipMate#GetSnippets(scopes, trigger)
let result = {}
let triggerR = escape(substitute(a:trigger,'*','.*','g'), '~') " escape '~' for use as regexp
" let scopes = s:AddScopeAliases(a:scopes)

for F in values(g:snipMateSources)
call funcref#Call(F, [a:scopes, a:trigger, result])
endfor
return result
endf

" adds leading tab
" and replaces leading spaces by tabs
" see ftplugin/snippet.vim
fun! snipMate#RetabSnip() range
  let leadingTab = expand('%:e') == 'snippets'

  let lines = getline(a:firstline, a:lastline)

" remove leading "\t"
  let allIndented = 1
  for l in lines
if l[0] != '\t' | let allIndented = 0 | endif
  endfor

" retab
  if allIndented
call map(lines, 'v:val[1:]')
  endif

  let leadingSp = filter(map(copy(lines),'matchstr(v:val,"^\\s*") '),'v:val !=""')
  if !empty(leadingSp)
" lines containing leading spaces found
let smallestInd = len(sort(leadingSp)[-1])
let ind = input('retab, spaces per tab: ', smallestInd)
for i in range(0, len(lines)-1)
let ml = matchlist(lines[i], '^\(\s*\)\(.*\)')
let lines[i] = repeat("\t", len(ml[1]) / ind)
\ . repeat( " ", len(ml[1]) % ind)
\ . ml[2]
endfor
  endif
" readd tab
  let tab = leadingTab ? "\t" : ""
  for i in range(0,len(lines)-1)
call setline(a:firstline + i, tab.lines[i])
  endfor
endf

fun! snipMate#OpenSnippetFiles()
  let dict = snipMate#GetSnippetFiles(0, snipMate#ScopesByFile(), '*')
" sort by files wether they exist - put existing files first
  let exists = []
  let notExists = []
  for [file, v] in items(dict)
let v['file'] = file
if v['exists']
call add(exists, v)
else
call add(notExists, v)
endif
  endfor
  let all = exists + notExists
  let show = map(copy(all),'(v:val["exists"] ? "exists:" : "does not exist yet:")." ".v:val["file"]')
  let select = tlib#input#List('mi', 'select files to be opened in splits', show)
  for idx in select
exec 'sp '.all[idx - 1]['file']
  endfor
endf

fun! snipMate#ScopesByFile()
" duplicates are removed in AddScopeAliases
return filter(funcref#Call(s:c.get_scopes), "v:val != ''")
endf

" used by both: completion and insert snippet
fun! snipMate#GetSnippetsForWordBelowCursor(word, suffix, break_on_first_match)
" Setup lookups: '1.2.3' becomes [1.2.3] + [3, 2.3]
let parts = split(a:word, '\W\zs')
if len(parts) > 2
let parts = parts[-2:] " max 2 additional items, this might become a setting
endif
let lookups = [a:word.a:suffix]
let lookup = ''
for w in reverse(parts)
let lookup = w . lookup
if index(lookups, lookup) == -1
call add(lookups, lookup.a:suffix)
endif
endfor

" allow matching '.'
if a:word =~ '\.$'
call add(lookups, '.'.a:suffix)
endif

call filter(lookups, 'v:val != ""')
" echo lookups

let matching_snippets = []
let snippet = ''
" prefer longest word
for word in lookups
let s:c.word = word
" echomsg string(lookups).' current: '.word
for [k,snippetD] in items(funcref#Call(s:c['get_snippets'], [snipMate#ScopesByFile(), word]))
if a:suffix == ''
" hack: require exact match
if k !=# word | continue | endif
endif
call add(matching_snippets, [k, snippetD])
if a:break_on_first_match | break| endif
endfor
endfor
return matching_snippets
endf

" snippets: dict containing snippets by name
" usually this is just {'default' : snippet_contents }
fun! s:ChooseSnippet(snippets)
let snippet = []
let keys = keys(a:snippets)
let i = 1
for snip in keys
let snippet += [i.'. '.snip]
let i += 1
endfor
if len(snippet) == 1
" there's only a single snippet, choose it
let idx = 0
else
let idx = tlib#input#List('si','select snippet by name',snippet) -1
if idx == -1
return ''
endif
endif
" if a:snippets[..] is a String Call returns it
" If it's a function or a function string the result is returned
return funcref#Call(a:snippets[keys(a:snippets)[idx]])
endf

fun! snipMate#ShowAvailableSnips()
let line = getline('.')
let col = col('.')
let word = matchstr(line, '\S\+\%'.col.'c')
let matchlen = 0
let matches = []

let snippet_triggers = map(snipMate#GetSnippetsForWordBelowCursor(word, '*', 0),'v:val[0]')

for trigger in snippet_triggers
if word == ''
let matches += [trigger] " Show all matches if word is empty
elseif trigger =~ '^'.word
let matches += [trigger]
let len = len(word)
if len > matchlen | let matchlen = len | endif
endif
endfor

" Pretty hacky, but really can't have the tab swallowed!
if len(matches) == 0
call feedkeys(s:c['no_match_completion_feedkeys_chars'], 'n')
return ""
endif

" This is to avoid a bug with Vim when using complete(col - matchlen, matches)
" (Issue#46 on the Google Code snipMate issue tracker).
call setline(line('.'), substitute(line, repeat('.', matchlen).'\%'.col.'c', '', ''))
call complete(col, sort(matches))
return ''
endf


" user interface implementation {{{1

fun! snipMate#TriggerSnippet()
if exists('g:SuperTabMappingForward')
if g:SuperTabMappingForward == "<tab>"
let SuperTabPlug = maparg('<Plug>SuperTabForward', 'i')
if SuperTabPlug == ""
let SuperTabKey = "\<c-n>"
else
exec "let SuperTabKey = \"" . escape(SuperTabPlug, '<') . "\""
endif
elseif g:SuperTabMappingBackward == "<tab>"
let SuperTabPlug = maparg('<Plug>SuperTabBackward', 'i')
if SuperTabPlug == ""
let SuperTabKey = "\<c-p>"
else
exec "let SuperTabKey = \"" . escape(SuperTabPlug, '<') . "\""
endif
endif
endif

if pumvisible() " Update snippet if completion is used, or deal with supertab
if exists('SuperTabKey')
call feedkeys(SuperTabKey) | return ''
endif
call feedkeys("\<esc>a", 'n') " Close completion menu
call feedkeys("\<tab>") | return ''
endif

if exists('g:snipPos') | return snipMate#jumpTabStop(0) | endif

let word = matchstr(getline('.'), '\S\+\%'.col('.').'c')
let list = snipMate#GetSnippetsForWordBelowCursor(word, '', 1)
if empty(list)
let snippet = ''
else
let [trigger, snippetD] = list[0]

let s = s:ChooseSnippet(snippetD)
if type(s) == type([])
let snippet = join(s, "\n")
else
let snippet = s
end

let &undolevels = &undolevels " create new undo point
let col = col('.') - len(trigger)
sil exe 's/\V'.escape(trigger, '/\.').'\%#//'
return snipMate#expandSnip(snippet, col)
endif

" should allow other plugins to register hooks instead (duplicate code)
if exists('SuperTabKey')
call feedkeys(SuperTabKey)
return ''
endif
return word == ''
\ ? "\<tab>"
\ : "\<c-r>=snipMate#ShowAvailableSnips()\<cr>"
endf


fun! snipMate#BackwardsSnippet()
if exists('g:snipPos') | return snipMate#jumpTabStop(1) | endif

if exists('g:SuperTabMappingForward')
if g:SuperTabMappingForward == "<s-tab>"
let SuperTabPlug = maparg('<Plug>SuperTabForward', 'i')
if SuperTabPlug == ""
let SuperTabKey = "\<c-n>"
else
exec "let SuperTabKey = \"" . escape(SuperTabPlug, '<') . "\""
endif
elseif g:SuperTabMappingBackward == "<s-tab>"
let SuperTabPlug = maparg('<Plug>SuperTabBackward', 'i')
if SuperTabPlug == ""
let SuperTabKey = "\<c-p>"
else
exec "let SuperTabKey = \"" . escape(SuperTabPlug, '<') . "\""
endif
endif
endif
" should allow other plugins to register hooks instead (duplicate code)
if exists('SuperTabKey')
call feedkeys(SuperTabKey)
return ''
endif
return "\<s-tab>"
endf


" vim:noet:sw=4:ts=4:ft=vim
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