mirror of
https://github.com/amix/vimrc
synced 2024-12-29 21:33:06 +00:00
342 lines
12 KiB
VimL
342 lines
12 KiB
VimL
if exists('g:gitgutter_grep_command')
|
|
let s:grep_available = 1
|
|
let s:grep_command = g:gitgutter_grep_command
|
|
else
|
|
let s:grep_available = executable('grep')
|
|
if s:grep_available
|
|
let s:grep_command = 'grep --color=never -e'
|
|
endif
|
|
endif
|
|
let s:hunk_re = '^@@ -\(\d\+\),\?\(\d*\) +\(\d\+\),\?\(\d*\) @@'
|
|
|
|
let s:c_flag = gitgutter#utility#git_supports_command_line_config_override()
|
|
|
|
let s:temp_index = tempname()
|
|
let s:temp_buffer = tempname()
|
|
|
|
" Returns a diff of the buffer.
|
|
"
|
|
" The way to get the diff depends on whether the buffer is saved or unsaved.
|
|
"
|
|
" * Saved: the buffer contents is the same as the file on disk in the working
|
|
" tree so we simply do:
|
|
"
|
|
" git diff myfile
|
|
"
|
|
" * Unsaved: the buffer contents is not the same as the file on disk so we
|
|
" need to pass two instances of the file to git-diff:
|
|
"
|
|
" git diff myfileA myfileB
|
|
"
|
|
" The first instance is the file in the index which we obtain with:
|
|
"
|
|
" git show :myfile > myfileA
|
|
"
|
|
" The second instance is the buffer contents. Ideally we would pass this to
|
|
" git-diff on stdin via the second argument to vim's system() function.
|
|
" Unfortunately git-diff does not do CRLF conversion for input received on
|
|
" stdin, and git-show never performs CRLF conversion, so repos with CRLF
|
|
" conversion report that every line is modified due to mismatching EOLs.
|
|
"
|
|
" Instead, we write the buffer contents to a temporary file - myfileB in this
|
|
" example. Note the file extension must be preserved for the CRLF
|
|
" conversion to work.
|
|
"
|
|
" Before diffing a buffer for the first time, we check whether git knows about
|
|
" the file:
|
|
"
|
|
" git ls-files --error-unmatch myfile
|
|
"
|
|
" After running the diff we pass it through grep where available to reduce
|
|
" subsequent processing by the plugin. If grep is not available the plugin
|
|
" does the filtering instead.
|
|
function! gitgutter#diff#run_diff(realtime, preserve_full_diff) abort
|
|
" Wrap compound commands in parentheses to make Windows happy.
|
|
" bash doesn't mind the parentheses.
|
|
let cmd = '('
|
|
|
|
let bufnr = gitgutter#utility#bufnr()
|
|
let tracked = gitgutter#utility#getbufvar(bufnr, 'tracked', 0) " i.e. tracked by git
|
|
if !tracked
|
|
" Don't bother trying to realtime-diff an untracked file.
|
|
" NOTE: perhaps we should pull this guard up to the caller?
|
|
if a:realtime
|
|
throw 'diff failed'
|
|
else
|
|
let cmd .= g:gitgutter_git_executable.' ls-files --error-unmatch '.gitgutter#utility#shellescape(gitgutter#utility#filename()).' && ('
|
|
endif
|
|
endif
|
|
|
|
if a:realtime
|
|
let blob_name = g:gitgutter_diff_base.':'.gitgutter#utility#shellescape(gitgutter#utility#file_relative_to_repo_root())
|
|
let blob_file = s:temp_index
|
|
let buff_file = s:temp_buffer
|
|
let extension = gitgutter#utility#extension()
|
|
if !empty(extension)
|
|
let blob_file .= '.'.extension
|
|
let buff_file .= '.'.extension
|
|
endif
|
|
let cmd .= g:gitgutter_git_executable.' show '.blob_name.' > '.blob_file.' && '
|
|
|
|
" Writing the whole buffer resets the '[ and '] marks and also the
|
|
" 'modified' flag (if &cpoptions includes '+'). These are unwanted
|
|
" side-effects so we save and restore the values ourselves.
|
|
let modified = getbufvar(bufnr, "&mod")
|
|
let op_mark_start = getpos("'[")
|
|
let op_mark_end = getpos("']")
|
|
|
|
execute 'keepalt noautocmd silent write!' buff_file
|
|
|
|
call setbufvar(bufnr, "&mod", modified)
|
|
call setpos("'[", op_mark_start)
|
|
call setpos("']", op_mark_end)
|
|
endif
|
|
|
|
let cmd .= g:gitgutter_git_executable
|
|
if s:c_flag
|
|
let cmd .= ' -c "diff.autorefreshindex=0"'
|
|
let cmd .= ' -c "diff.noprefix=false"'
|
|
endif
|
|
let cmd .= ' diff --no-ext-diff --no-color -U0 '.g:gitgutter_diff_args.' '
|
|
|
|
if a:realtime
|
|
let cmd .= ' -- '.blob_file.' '.buff_file
|
|
else
|
|
let cmd .= g:gitgutter_diff_base.' -- '.gitgutter#utility#shellescape(gitgutter#utility#filename())
|
|
endif
|
|
|
|
if !a:preserve_full_diff && s:grep_available
|
|
let cmd .= ' | '.s:grep_command.' '.gitgutter#utility#shellescape('^@@ ')
|
|
endif
|
|
|
|
if (!a:preserve_full_diff && s:grep_available) || a:realtime
|
|
" grep exits with 1 when no matches are found; diff exits with 1 when
|
|
" differences are found. However we want to treat non-matches and
|
|
" differences as non-erroneous behaviour; so we OR the command with one
|
|
" which always exits with success (0).
|
|
let cmd .= ' || exit 0'
|
|
endif
|
|
|
|
let cmd .= ')'
|
|
|
|
if !tracked
|
|
let cmd .= ')'
|
|
endif
|
|
|
|
let cmd = gitgutter#utility#command_in_directory_of_file(cmd)
|
|
|
|
if g:gitgutter_async && gitgutter#async#available() && !a:preserve_full_diff
|
|
call gitgutter#async#execute(cmd)
|
|
return 'async'
|
|
|
|
else
|
|
let diff = gitgutter#utility#system(cmd)
|
|
|
|
if gitgutter#utility#shell_error()
|
|
" A shell error indicates the file is not tracked by git (unless something bizarre is going on).
|
|
throw 'diff failed'
|
|
endif
|
|
|
|
return diff
|
|
endif
|
|
endfunction
|
|
|
|
function! gitgutter#diff#parse_diff(diff) abort
|
|
let hunks = []
|
|
for line in split(a:diff, '\n')
|
|
let hunk_info = gitgutter#diff#parse_hunk(line)
|
|
if len(hunk_info) == 4
|
|
call add(hunks, hunk_info)
|
|
endif
|
|
endfor
|
|
return hunks
|
|
endfunction
|
|
|
|
function! gitgutter#diff#parse_hunk(line) abort
|
|
let matches = matchlist(a:line, s:hunk_re)
|
|
if len(matches) > 0
|
|
let from_line = str2nr(matches[1])
|
|
let from_count = (matches[2] == '') ? 1 : str2nr(matches[2])
|
|
let to_line = str2nr(matches[3])
|
|
let to_count = (matches[4] == '') ? 1 : str2nr(matches[4])
|
|
return [from_line, from_count, to_line, to_count]
|
|
else
|
|
return []
|
|
end
|
|
endfunction
|
|
|
|
function! gitgutter#diff#process_hunks(hunks) abort
|
|
let modified_lines = []
|
|
for hunk in a:hunks
|
|
call extend(modified_lines, gitgutter#diff#process_hunk(hunk))
|
|
endfor
|
|
return modified_lines
|
|
endfunction
|
|
|
|
" Returns [ [<line_number (number)>, <name (string)>], ...]
|
|
function! gitgutter#diff#process_hunk(hunk) abort
|
|
let modifications = []
|
|
let from_line = a:hunk[0]
|
|
let from_count = a:hunk[1]
|
|
let to_line = a:hunk[2]
|
|
let to_count = a:hunk[3]
|
|
|
|
if gitgutter#diff#is_added(from_count, to_count)
|
|
call gitgutter#diff#process_added(modifications, from_count, to_count, to_line)
|
|
call gitgutter#hunk#increment_lines_added(to_count)
|
|
|
|
elseif gitgutter#diff#is_removed(from_count, to_count)
|
|
call gitgutter#diff#process_removed(modifications, from_count, to_count, to_line)
|
|
call gitgutter#hunk#increment_lines_removed(from_count)
|
|
|
|
elseif gitgutter#diff#is_modified(from_count, to_count)
|
|
call gitgutter#diff#process_modified(modifications, from_count, to_count, to_line)
|
|
call gitgutter#hunk#increment_lines_modified(to_count)
|
|
|
|
elseif gitgutter#diff#is_modified_and_added(from_count, to_count)
|
|
call gitgutter#diff#process_modified_and_added(modifications, from_count, to_count, to_line)
|
|
call gitgutter#hunk#increment_lines_added(to_count - from_count)
|
|
call gitgutter#hunk#increment_lines_modified(from_count)
|
|
|
|
elseif gitgutter#diff#is_modified_and_removed(from_count, to_count)
|
|
call gitgutter#diff#process_modified_and_removed(modifications, from_count, to_count, to_line)
|
|
call gitgutter#hunk#increment_lines_modified(to_count)
|
|
call gitgutter#hunk#increment_lines_removed(from_count - to_count)
|
|
|
|
endif
|
|
return modifications
|
|
endfunction
|
|
|
|
function! gitgutter#diff#is_added(from_count, to_count) abort
|
|
return a:from_count == 0 && a:to_count > 0
|
|
endfunction
|
|
|
|
function! gitgutter#diff#is_removed(from_count, to_count) abort
|
|
return a:from_count > 0 && a:to_count == 0
|
|
endfunction
|
|
|
|
function! gitgutter#diff#is_modified(from_count, to_count) abort
|
|
return a:from_count > 0 && a:to_count > 0 && a:from_count == a:to_count
|
|
endfunction
|
|
|
|
function! gitgutter#diff#is_modified_and_added(from_count, to_count) abort
|
|
return a:from_count > 0 && a:to_count > 0 && a:from_count < a:to_count
|
|
endfunction
|
|
|
|
function! gitgutter#diff#is_modified_and_removed(from_count, to_count) abort
|
|
return a:from_count > 0 && a:to_count > 0 && a:from_count > a:to_count
|
|
endfunction
|
|
|
|
function! gitgutter#diff#process_added(modifications, from_count, to_count, to_line) abort
|
|
let offset = 0
|
|
while offset < a:to_count
|
|
let line_number = a:to_line + offset
|
|
call add(a:modifications, [line_number, 'added'])
|
|
let offset += 1
|
|
endwhile
|
|
endfunction
|
|
|
|
function! gitgutter#diff#process_removed(modifications, from_count, to_count, to_line) abort
|
|
if a:to_line == 0
|
|
call add(a:modifications, [1, 'removed_first_line'])
|
|
else
|
|
call add(a:modifications, [a:to_line, 'removed'])
|
|
endif
|
|
endfunction
|
|
|
|
function! gitgutter#diff#process_modified(modifications, from_count, to_count, to_line) abort
|
|
let offset = 0
|
|
while offset < a:to_count
|
|
let line_number = a:to_line + offset
|
|
call add(a:modifications, [line_number, 'modified'])
|
|
let offset += 1
|
|
endwhile
|
|
endfunction
|
|
|
|
function! gitgutter#diff#process_modified_and_added(modifications, from_count, to_count, to_line) abort
|
|
let offset = 0
|
|
while offset < a:from_count
|
|
let line_number = a:to_line + offset
|
|
call add(a:modifications, [line_number, 'modified'])
|
|
let offset += 1
|
|
endwhile
|
|
while offset < a:to_count
|
|
let line_number = a:to_line + offset
|
|
call add(a:modifications, [line_number, 'added'])
|
|
let offset += 1
|
|
endwhile
|
|
endfunction
|
|
|
|
function! gitgutter#diff#process_modified_and_removed(modifications, from_count, to_count, to_line) abort
|
|
let offset = 0
|
|
while offset < a:to_count
|
|
let line_number = a:to_line + offset
|
|
call add(a:modifications, [line_number, 'modified'])
|
|
let offset += 1
|
|
endwhile
|
|
let a:modifications[-1] = [a:to_line + offset - 1, 'modified_removed']
|
|
endfunction
|
|
|
|
" Generates a zero-context diff for the current hunk.
|
|
"
|
|
" diff - the full diff for the buffer
|
|
" type - stage | undo | preview
|
|
function! gitgutter#diff#generate_diff_for_hunk(diff, type) abort
|
|
let diff_for_hunk = gitgutter#diff#discard_hunks(a:diff, a:type == 'stage' || a:type == 'undo')
|
|
|
|
if a:type == 'stage' || a:type == 'undo'
|
|
let diff_for_hunk = gitgutter#diff#adjust_hunk_summary(diff_for_hunk, a:type == 'stage')
|
|
endif
|
|
|
|
return diff_for_hunk
|
|
endfunction
|
|
|
|
" Returns the diff with all hunks discarded except the current.
|
|
"
|
|
" diff - the diff to process
|
|
" keep_header - truthy to keep the diff header and hunk summary, falsy to discard it
|
|
function! gitgutter#diff#discard_hunks(diff, keep_header) abort
|
|
let modified_diff = []
|
|
let keep_line = a:keep_header
|
|
for line in split(a:diff, '\n')
|
|
let hunk_info = gitgutter#diff#parse_hunk(line)
|
|
if len(hunk_info) == 4 " start of new hunk
|
|
let keep_line = gitgutter#hunk#cursor_in_hunk(hunk_info)
|
|
endif
|
|
if keep_line
|
|
call add(modified_diff, line)
|
|
endif
|
|
endfor
|
|
|
|
if a:keep_header
|
|
return gitgutter#utility#stringify(modified_diff)
|
|
else
|
|
" Discard hunk summary too.
|
|
return gitgutter#utility#stringify(modified_diff[1:])
|
|
endif
|
|
endfunction
|
|
|
|
" Adjust hunk summary (from's / to's line number) to ignore changes above/before this one.
|
|
"
|
|
" diff_for_hunk - a diff containing only the hunk of interest
|
|
" staging - truthy if the hunk is to be staged, falsy if it is to be undone
|
|
"
|
|
" TODO: push this down to #discard_hunks?
|
|
function! gitgutter#diff#adjust_hunk_summary(diff_for_hunk, staging) abort
|
|
let line_adjustment = gitgutter#hunk#line_adjustment_for_current_hunk()
|
|
let adj_diff = []
|
|
for line in split(a:diff_for_hunk, '\n')
|
|
if match(line, s:hunk_re) != -1
|
|
if a:staging
|
|
" increment 'to' line number
|
|
let line = substitute(line, '+\@<=\(\d\+\)', '\=submatch(1)+line_adjustment', '')
|
|
else
|
|
" decrement 'from' line number
|
|
let line = substitute(line, '-\@<=\(\d\+\)', '\=submatch(1)-line_adjustment', '')
|
|
endif
|
|
endif
|
|
call add(adj_diff, line)
|
|
endfor
|
|
return gitgutter#utility#stringify(adj_diff)
|
|
endfunction
|
|
|