+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
+ " Evaluate eval (`...`) expressions.
+ " Using a loop here instead of a regex fixes a bug with nested "\=".
+ if stridx(snippet, '`') != -1
+ while match(snippet, '`.\{-}`') != -1
+ let snippet = substitute(snippet, '`.\{-}`',
+ \ substitute(eval(matchstr(snippet, '`\zs.\{-}\ze`')),
+ \ "\n\\%$", '', ''), '')
+ endw
+ let snippet = substitute(snippet, "\r", "\n", 'g')
+ endif
+
+ " Place all text after a colon in a tab stop after the tab stop
+ " (e.g. "${#: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>" : 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
+" vim:noet:sw=4:ts=4:ft=vim
projects / etc / vim.git / commitdiff