my-emacs-d/elpa/helm-core-20160913.219/helm-lib.el
2016-09-15 11:18:17 +02:00

884 lines
32 KiB
EmacsLisp
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

;;; helm-lib.el --- Helm routines. -*- lexical-binding: t -*-
;; Copyright (C) 2015 ~ 2016 Thierry Volpiatto <thierry.volpiatto@gmail.com>
;; Author: Thierry Volpiatto <thierry.volpiatto@gmail.com>
;; URL: http://github.com/emacs-helm/helm
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; All helm functions that don't require specific helm code should go here.
;;; Code:
(require 'cl-lib)
(require 'dired)
;;; User vars.
;;
(defcustom helm-file-globstar t
"Same as globstar bash shopt option.
When non--nil a pattern beginning with two stars will expand recursively.
Directories expansion is not supported yet."
:group 'helm
:type 'boolean)
(defcustom helm-yank-text-at-point-function nil
"The function used to forward point with `helm-yank-text-at-point'.
With a nil value, fallback to default `forward-word'.
The function should take one arg, an integer like `forward-word'.
NOTE: Using `forward-symbol' here is not very useful as it is already
provided by \\<helm-map>\\[next-history-element]."
:type 'function
:group 'helm)
(defcustom helm-scroll-amount nil
"Scroll amount when scrolling other window in a helm session.
It is used by `helm-scroll-other-window'
and `helm-scroll-other-window-down'.
If you prefer scrolling line by line, set this value to 1."
:group 'helm
:type 'integer)
(defcustom helm-help-full-frame t
"Display help window in full frame when non nil.
Even when `nil' probably the same result (full frame)
can be reach by tweaking `display-buffer-alist' but it is
much more convenient to use a simple boolean value here."
:type 'boolean
:group 'helm-help)
;;; Internal vars
;;
(defvar helm-yank-point nil)
(defvar helm-pattern ""
"The input pattern used to update the helm buffer.")
(defvar helm-buffer "*helm*"
"Buffer showing completions.")
(defvar helm-current-buffer nil
"Current buffer when `helm' is invoked.")
(defvar helm-suspend-update-flag nil)
(defvar helm-action-buffer "*helm action*"
"Buffer showing actions.")
;;; Compatibility
;;
(defun helm-add-face-text-properties (beg end face &optional append object)
"Add the face property to the text from START to END.
It is a compatibility function which behave exactly like
`add-face-text-property' if available otherwise like `add-text-properties'.
When only `add-text-properties' is available APPEND is ignored."
(if (fboundp 'add-face-text-property)
(add-face-text-property beg end face append object)
(add-text-properties beg end `(face ,face) object)))
;;; Macros helper.
;;
(defmacro helm-with-gensyms (symbols &rest body)
"Bind the SYMBOLS to fresh uninterned symbols and eval BODY."
(declare (indent 1))
`(let ,(mapcar (lambda (s)
;; Use cl-gensym here instead of make-symbol
;; to ensure a symbol that have a live that go
;; beyond the live of its macro have different name.
;; i.e symbols created with `with-helm-temp-hook'
;; should have random names.
`(,s (cl-gensym (symbol-name ',s))))
symbols)
,@body))
;;; Command loop helper
;;
(defun helm-this-command ()
"Returns the actual command in action.
Like `this-command' but return the real command,
and not `exit-minibuffer' or other unwanted functions."
(cl-loop with bl = '(helm-maybe-exit-minibuffer
helm-confirm-and-exit-minibuffer
helm-exit-minibuffer
exit-minibuffer)
for count from 1 to 50
for btf = (backtrace-frame count)
for fn = (cl-second btf)
if (and
;; In some case we may have in the way an
;; advice compiled resulting in byte-code,
;; ignore it (Issue #691).
(symbolp fn)
(commandp fn)
(not (memq fn bl)))
return fn
else
if (and (eq fn 'call-interactively)
(> (length btf) 2))
return (cadr (cdr btf))))
;;; Iterators
;;
(defun helm-iter-list (seq)
"Return an iterator object from SEQ."
(let ((lis seq))
(lambda ()
(let ((elm (car lis)))
(setq lis (cdr lis))
elm))))
(defun helm-iter-next (iterator)
"Return next elm of ITERATOR."
(funcall iterator))
(defun helm-make-actions (&rest args)
"Build an alist with (NAME . ACTION) elements with each pairs in ARGS.
Where NAME is a string or a function returning a string or nil and ACTION
a function.
If NAME returns nil the pair is skipped.
\(fn NAME ACTION ...)"
(cl-loop for i on args by #'cddr
for name = (car i)
when (functionp name)
do (setq name (funcall name))
when name
collect (cons name (cadr i))))
;;; Anaphoric macros.
;;
(defmacro helm-aif (test-form then-form &rest else-forms)
"Anaphoric version of `if'.
Like `if' but set the result of TEST-FORM in a temporary variable called `it'.
THEN-FORM and ELSE-FORMS are then excuted just like in `if'."
(declare (indent 2) (debug t))
`(let ((it ,test-form))
(if it ,then-form ,@else-forms)))
(defmacro helm-awhile (sexp &rest body)
"Anaphoric version of `while'.
Same usage as `while' except that SEXP is bound to
a temporary variable called `it' at each turn.
An implicit nil block is bound to the loop so usage
of `cl-return' is possible to exit the loop."
(declare (indent 1) (debug t))
(helm-with-gensyms (flag)
`(let ((,flag t))
(cl-block nil
(while ,flag
(helm-aif ,sexp
(progn ,@body)
(setq ,flag nil)))))))
(defmacro helm-acond (&rest clauses)
"Anaphoric version of `cond'."
(unless (null clauses)
(helm-with-gensyms (sym)
(let ((clause1 (car clauses)))
`(let ((,sym ,(car clause1)))
(helm-aif ,sym
(progn ,@(cdr clause1))
(helm-acond ,@(cdr clauses))))))))
;;; Fuzzy matching routines
;;
(defsubst helm--mapconcat-pattern (pattern)
"Transform string PATTERN in regexp for further fuzzy matching.
e.g helm.el$
=> \"[^h]*h[^e]*e[^l]*l[^m]*m[^.]*[.][^e]*e[^l]*l$\"
^helm.el$
=> \"helm[.]el$\"."
(let ((ls (split-string-and-unquote pattern "")))
(if (string= "^" (car ls))
;; Exact match.
(mapconcat (lambda (c)
(if (and (string= c "$")
(string-match "$\\'" pattern))
c (regexp-quote c)))
(cdr ls) "")
;; Fuzzy match.
(mapconcat (lambda (c)
(if (and (string= c "$")
(string-match "$\\'" pattern))
c (format "[^%s]*%s" c (regexp-quote c))))
ls ""))))
(defsubst helm--collect-pairs-in-string (string)
(cl-loop for str on (split-string string "" t) by 'cdr
when (cdr str)
collect (list (car str) (cadr str))))
;;; Help routines.
;;
(defun helm-help-internal (bufname insert-content-fn)
"Show long message during `helm' session in BUFNAME.
INSERT-CONTENT-FN is the function that insert
text to be displayed in BUFNAME."
(let ((winconf (current-frame-configuration)))
(unwind-protect
(progn
(setq helm-suspend-update-flag t)
(set-buffer (get-buffer-create bufname))
(switch-to-buffer bufname)
(when helm-help-full-frame (delete-other-windows))
(delete-region (point-min) (point-max))
(org-mode)
(save-excursion
(funcall insert-content-fn))
(buffer-disable-undo)
(helm-help-event-loop))
(setq helm-suspend-update-flag nil)
(set-frame-configuration winconf))))
(defun helm-help-scroll-up (amount)
(condition-case _err
(scroll-up-command amount)
(beginning-of-buffer nil)
(end-of-buffer nil)))
(defun helm-help-scroll-down (amount)
(condition-case _err
(scroll-down-command amount)
(beginning-of-buffer nil)
(end-of-buffer nil)))
(defun helm-help-next-line ()
(condition-case _err
(call-interactively #'next-line)
(beginning-of-buffer nil)
(end-of-buffer nil)))
(defun helm-help-previous-line ()
(condition-case _err
(call-interactively #'previous-line)
(beginning-of-buffer nil)
(end-of-buffer nil)))
(defun helm-help-toggle-mark ()
(if (region-active-p)
(deactivate-mark)
(push-mark nil nil t)))
;; For movement of cursor in help buffer we need to call interactively
;; commands for impaired people using a synthetizer (#1347).
(defun helm-help-event-loop ()
(let ((prompt (propertize
"[SPC,C-v,down,next:NextPage b,M-v,up,prior:PrevPage C-s/r:Isearch q:Quit]"
'face 'helm-helper))
scroll-error-top-bottom)
(helm-awhile (read-key prompt)
(cl-case it
((?\C-v ? down next) (helm-help-scroll-up helm-scroll-amount))
((?\M-v ?b up prior) (helm-help-scroll-down helm-scroll-amount))
(?\C-s (isearch-forward))
(?\C-r (isearch-backward))
(?\C-a (call-interactively #'move-beginning-of-line))
(?\C-e (call-interactively #'move-end-of-line))
(?\C-f (call-interactively #'forward-char))
(?\C-b (call-interactively #'backward-char))
(?\C-n (helm-help-next-line))
(?\C-p (helm-help-previous-line))
(?\M-a (call-interactively #'backward-sentence))
(?\M-e (call-interactively #'forward-sentence))
(?\M-f (call-interactively #'forward-word))
(?\M-b (call-interactively #'backward-word))
(?\C- (helm-help-toggle-mark))
(?\M-w (copy-region-as-kill
(region-beginning) (region-end))
(deactivate-mark))
(?q (cl-return))
(t (ignore))))))
;;; List processing
;;
(defun helm-flatten-list (seq &optional omit-nulls)
"Return a list of all single elements of sublists in SEQ."
(let (result)
(cl-labels ((flatten (seq)
(cl-loop
for elm in seq
if (and (or elm
(null omit-nulls))
(or (atom elm)
(functionp elm)
(and (consp elm)
(cdr elm)
(atom (cdr elm)))))
do (push elm result)
else do (flatten elm))))
(flatten seq))
(nreverse result)))
(defun helm-mklist (obj)
"If OBJ is a list \(but not lambda\), return itself.
Otherwise make a list with one element."
(if (and (listp obj) (not (functionp obj)))
obj
(list obj)))
(cl-defmacro helm-position (item seq &key (test 'eq) all)
"A simple and faster replacement of CL `position'.
Return position of first occurence of ITEM found in SEQ.
Argument SEQ can be a string, in this case ITEM have to be a char.
Argument ALL, if non--nil specify to return a list of positions of
all ITEM found in SEQ."
(let ((key (if (stringp seq) 'across 'in)))
`(cl-loop for c ,key ,seq
for index from 0
when (funcall ,test c ,item)
if ,all collect index into ls
else return index
finally return ls)))
(cl-defun helm-fast-remove-dups (seq &key (test 'eq))
"Remove duplicates elements in list SEQ.
This is same as `remove-duplicates' but with memoisation.
It is much faster, especially in large lists.
A test function can be provided with TEST argument key.
Default is `eq'."
(cl-loop with cont = (make-hash-table :test test)
for elm in seq
unless (gethash elm cont)
collect (puthash elm elm cont)))
(defun helm-skip-entries (seq black-regexp-list &optional white-regexp-list)
"Remove entries which matches one of REGEXP-LIST from SEQ."
(cl-loop for i in seq
unless (and (cl-loop for re in black-regexp-list
thereis (and (stringp i)
(string-match-p re i)))
(null
(cl-loop for re in white-regexp-list
thereis (and (stringp i)
(string-match-p re i)))))
collect i))
(defun helm-boring-directory-p (directory black-list)
"Check if one regexp in BLACK-LIST match DIRECTORY."
(helm-awhile (helm-basedir (directory-file-name
(expand-file-name directory)))
(when (string= it "/") (cl-return nil))
(when (cl-loop for r in black-list
thereis (string-match-p
r (directory-file-name directory)))
(cl-return t))
(setq directory it)))
(defun helm-shadow-entries (seq regexp-list)
"Put shadow property on entries in SEQ matching a regexp in REGEXP-LIST."
(let ((face 'italic))
(cl-loop for i in seq
if (cl-loop for regexp in regexp-list
thereis (and (stringp i)
(string-match regexp i)))
collect (propertize i 'face face)
else collect i)))
(defun helm-remove-if-not-match (regexp seq)
"Remove all elements of SEQ that don't match REGEXP."
(cl-loop for s in seq
for str = (cond ((symbolp s)
(symbol-name s))
((consp s)
(car s))
(t s))
when (string-match-p regexp str)
collect s))
(defun helm-remove-if-match (regexp seq)
"Remove all elements of SEQ that match REGEXP."
(cl-loop for s in seq
for str = (cond ((symbolp s)
(symbol-name s))
((consp s)
(car s))
(t s))
unless (string-match-p regexp str)
collect s))
(defun helm-transform-mapcar (function args)
"`mapcar' for candidate-transformer.
ARGS is (cand1 cand2 ...) or ((disp1 . real1) (disp2 . real2) ...)
\(helm-transform-mapcar 'upcase '(\"foo\" \"bar\"))
=> (\"FOO\" \"BAR\")
\(helm-transform-mapcar 'upcase '((\"1st\" . \"foo\") (\"2nd\" . \"bar\")))
=> ((\"1st\" . \"FOO\") (\"2nd\" . \"BAR\"))
"
(cl-loop for arg in args
if (consp arg)
collect (cons (car arg) (funcall function (cdr arg)))
else
collect (funcall function arg)))
(defun helm-append-at-nth (seq elm index)
"Append ELM at INDEX in SEQ."
(let ((len (length seq)))
(cond ((> index len) (setq index len))
((< index 0) (setq index 0)))
(if (zerop index)
(append elm seq)
(cl-loop for i in seq
for count from 1 collect i
when (= count index)
if (listp elm) append elm
else collect elm))))
(defun helm-source-by-name (name &optional sources)
"Get a Helm source in SOURCES by NAME.
Optional argument SOURCES is a list of Helm sources. The default
value is computed with `helm-get-sources' which is faster
than specifying SOURCES because sources are cached."
(cl-loop with src-list = (if sources
(cl-loop for src in sources
collect (if (listp src)
src
(symbol-value src)))
(helm-get-sources))
for source in src-list
thereis (and (string= name (assoc-default 'name source)) source)))
;;; Strings processing.
;;
(defun helm-stringify (elm)
"Return the representation of ELM as a string.
ELM can be a string, a number or a symbol."
(cl-typecase elm
(string elm)
(number (number-to-string elm))
(symbol (symbol-name elm))))
(defun helm-substring (str width)
"Return the substring of string STR from 0 to WIDTH.
Handle multibyte characters by moving by columns."
(with-temp-buffer
(save-excursion
(insert str))
(move-to-column width)
(buffer-substring (point-at-bol) (point))))
(defun helm-substring-by-width (str width &optional endstr)
"Truncate string STR to end at column WIDTH.
Similar to `truncate-string-to-width'.
Add ENDSTR at end of truncated STR.
Add spaces at end if needed to reach WIDTH when STR is shorter than WIDTH."
(cl-loop for ini-str = str
then (substring ini-str 0 (1- (length ini-str)))
for sw = (string-width ini-str)
when (<= sw width) return
(concat ini-str endstr (make-string (- width sw) ? ))))
(defun helm-string-multibyte-p (str)
"Check if string STR contains multibyte characters."
(cl-loop for c across str
thereis (> (char-width c) 1)))
(defun helm-get-pid-from-process-name (process-name)
"Get pid from running process PROCESS-NAME."
(cl-loop with process-list = (list-system-processes)
for pid in process-list
for process = (assoc-default 'comm (process-attributes pid))
when (and process (string-match process-name process))
return pid))
(defun helm-ff-find-printers ()
"Return a list of available printers on Unix systems."
(when (executable-find "lpstat")
(let ((printer-list (with-temp-buffer
(call-process "lpstat" nil t nil "-a")
(split-string (buffer-string) "\n"))))
(cl-loop for p in printer-list
for printer = (car (split-string p))
when printer
collect printer))))
(defun helm-region-active-p ()
(and transient-mark-mode mark-active (/= (mark) (point))))
(defun helm-quote-whitespace (candidate)
"Quote whitespace, if some, in string CANDIDATE."
(replace-regexp-in-string " " "\\\\ " candidate))
(defun helm-current-line-contents ()
"Current line string without properties."
(buffer-substring-no-properties (point-at-bol) (point-at-eol)))
;;; Symbols routines
;;
(defun helm-symbolify (str-or-sym)
"Get symbol of STR-OR-SYM."
(if (symbolp str-or-sym)
str-or-sym
(intern str-or-sym)))
(defun helm-symbol-name (obj)
(if (or (and (consp obj) (functionp obj))
(byte-code-function-p obj))
"Anonymous"
(symbol-name obj)))
(defun helm-describe-function (func)
"FUNC is symbol or string."
(cl-letf (((symbol-function 'message) #'ignore))
(describe-function (helm-symbolify func))))
(defun helm-describe-variable (var)
"VAR is symbol or string."
(cl-letf (((symbol-function 'message) #'ignore))
(describe-variable (helm-symbolify var))))
(defun helm-describe-face (face)
"FACE is symbol or string."
(cl-letf (((symbol-function 'message) #'ignore))
(describe-face (helm-symbolify face))))
(defun helm-find-function (func)
"FUNC is symbol or string."
(find-function (helm-symbolify func)))
(defun helm-find-variable (var)
"VAR is symbol or string."
(find-variable (helm-symbolify var)))
(defun helm-find-face-definition (face)
"FACE is symbol or string."
(find-face-definition (helm-symbolify face)))
(defun helm-kill-new (candidate &optional replace)
"CANDIDATE is symbol or string.
See `kill-new' for argument REPLACE."
(kill-new (helm-stringify candidate) replace))
;;; Modes
;;
(defun helm-same-major-mode-p (start-buffer alist)
"Decide if current-buffer is related to START-BUFFER.
Argument ALIST is an alist of associated major modes."
;; START-BUFFER is the current-buffer where we start searching.
;; Determine the major-mode of START-BUFFER as `cur-maj-mode'.
;; Each time the loop go in another buffer we try from this buffer
;; to determine if its `major-mode' is:
;; - same as the `cur-maj-mode'
;; - derived from `cur-maj-mode' and from
;; START-BUFFER if its mode is derived from the one in START-BUFFER.
;; - have an assoc entry (major-mode . cur-maj-mode)
;; - have an rassoc entry (cur-maj-mode . major-mode)
;; - check if one of these entries inherit from another one in
;; `alist'.
(let* ((cur-maj-mode (with-current-buffer start-buffer major-mode))
(maj-mode major-mode)
(c-assoc-mode (assq cur-maj-mode alist))
(c-rassoc-mode (rassq cur-maj-mode alist))
(o-assoc-mode (assq major-mode alist))
(o-rassoc-mode (rassq major-mode alist))
(cdr-c-assoc-mode (cdr c-assoc-mode))
(cdr-o-assoc-mode (cdr o-assoc-mode)))
(or (eq major-mode cur-maj-mode)
(derived-mode-p cur-maj-mode)
(with-current-buffer start-buffer
(derived-mode-p maj-mode))
(or (eq cdr-c-assoc-mode major-mode)
(eq (car c-rassoc-mode) major-mode)
(eq (cdr (assq cdr-c-assoc-mode alist))
major-mode)
(eq (car (rassq cdr-c-assoc-mode alist))
major-mode))
(or (eq cdr-o-assoc-mode cur-maj-mode)
(eq (car o-rassoc-mode) cur-maj-mode)
(eq (cdr (assq cdr-o-assoc-mode alist))
cur-maj-mode)
(eq (car (rassq cdr-o-assoc-mode alist))
cur-maj-mode)))))
;;; Files routines
;;
(defun helm-file-name-sans-extension (filename)
"Same as `file-name-sans-extension' but remove all extensions."
(helm-aif (file-name-sans-extension filename)
;; Start searching at index 1 for files beginning with a dot (#1335).
(if (string-match "\\." (helm-basename it) 1)
(helm-file-name-sans-extension it)
it)))
(defun helm-basename (fname &optional ext)
"Print FNAME with any leading directory components removed.
If specified, also remove filename extension EXT.
Arg EXT can be specified as a string with or without dot,
in this case it should match file-name-extension.
It can also be non-nil (`t') in this case no checking
of file-name-extension is done and the extension is removed
unconditionally."
(let ((non-essential t))
(if (and ext (or (string= (file-name-extension fname) ext)
(string= (file-name-extension fname t) ext)
(eq ext t))
(not (file-directory-p fname)))
(file-name-sans-extension (file-name-nondirectory fname))
(file-name-nondirectory (directory-file-name fname)))))
(defun helm-basedir (fname)
"Return the base directory of filename ending by a slash."
(helm-aif (and fname
(or (and (string= fname "~") "~")
(file-name-directory fname)))
(file-name-as-directory it)))
(defun helm-current-directory ()
"Return current-directory name at point.
Useful in dired buffers when there is inserted subdirs."
(expand-file-name
(if (eq major-mode 'dired-mode)
(dired-current-directory)
default-directory)))
(defun helm-w32-prepare-filename (file)
"Convert filename FILE to something usable by external w32 executables."
(replace-regexp-in-string ; For UNC paths
"/" "\\"
(replace-regexp-in-string ; Strip cygdrive paths
"/cygdrive/\\(.\\)" "\\1:"
file nil nil) nil t))
(defun helm-w32-shell-execute-open-file (file)
(with-no-warnings
(w32-shell-execute "open" (helm-w32-prepare-filename file))))
;; Same as `vc-directory-exclusion-list'.
(defvar helm-walk-ignore-directories
'("SCCS/" "RCS/" "CVS/" "MCVS/" ".svn/" ".git/" ".hg/" ".bzr/"
"_MTN/" "_darcs/" "{arch}/" ".gvfs/"))
(defsubst helm--dir-file-name (file dir)
(expand-file-name
(substring file 0 (1- (length file))) dir))
(defsubst helm--dir-name-p (str)
(char-equal (aref str (1- (length str))) ?/))
(cl-defun helm-walk-directory (directory &key (path 'basename)
directories
match skip-subdirs)
"Walk through DIRECTORY tree.
Argument PATH can be one of basename, relative, full, or a function
called on file name, default to basename.
Argument DIRECTORIES when non--nil (default) return also directories names,
otherwise skip directories names, with a value of 'only returns
only subdirectories, i.e files are skipped.
Argument MATCH is a regexp matching files or directories.
Argument SKIP-SUBDIRS when `t' will skip `helm-walk-ignore-directories'
otherwise if it is given as a list of directories, this list will be used
instead of `helm-walk-ignore-directories'."
(let ((fn (cl-case path
(basename 'file-name-nondirectory)
(relative 'file-relative-name)
(full 'identity)
(t path)))) ; A function.
(setq skip-subdirs (if (listp skip-subdirs)
skip-subdirs
helm-walk-ignore-directories))
(cl-labels ((ls-rec (dir)
(unless (file-symlink-p dir)
(cl-loop for f in (sort (file-name-all-completions "" dir)
'string-lessp)
unless (member f '("./" "../"))
;; A directory.
;; Use `helm--dir-file-name' to remove the final slash.
;; Needed to avoid infloop on directory symlinks.
if (and (helm--dir-name-p f)
(helm--dir-file-name f dir))
nconc
(unless (member f skip-subdirs)
(if (and directories
(or (null match)
(string-match match f)))
(nconc (list (concat (funcall fn it) "/"))
(ls-rec it))
(ls-rec it)))
;; A regular file.
else nconc
(when (and (null (eq directories 'only))
(or (null match) (string-match match f)))
(list (funcall fn (expand-file-name f dir))))))))
(ls-rec directory))))
(defun helm-file-expand-wildcards (pattern &optional full)
"Same as `file-expand-wildcards' but allow recursion.
Recursion happen when PATTERN starts with two stars.
Directories expansion is not supported."
(let ((bn (helm-basename pattern))
(case-fold-search nil))
(if (and helm-file-globstar
(string-match "\\`\\*\\{2\\}\\(.*\\)" bn))
(helm-walk-directory (helm-basedir pattern)
:path (cl-case full
(full 'full)
(relative 'relative)
((basename nil) 'basename)
(t 'full))
:directories nil
:match (wildcard-to-regexp bn)
:skip-subdirs t)
(file-expand-wildcards pattern full))))
;;; helm internals
;;
(defun helm-set-pattern (pattern &optional noupdate)
"Set minibuffer contents to PATTERN.
if optional NOUPDATE is non-nil, helm buffer is not changed."
(with-selected-window (or (active-minibuffer-window) (minibuffer-window))
(delete-minibuffer-contents)
(insert pattern))
(when noupdate
(setq helm-pattern pattern)))
(defun helm-minibuffer-completion-contents ()
"Return the user input in a minibuffer before point as a string.
That is what completion commands operate on."
(buffer-substring (field-beginning) (point)))
(defmacro with-helm-buffer (&rest body)
"Eval BODY inside `helm-buffer'."
(declare (indent 0) (debug t))
`(with-current-buffer (helm-buffer-get)
,@body))
(defmacro with-helm-current-buffer (&rest body)
"Eval BODY inside `helm-current-buffer'."
(declare (indent 0) (debug t))
`(with-current-buffer (or (and (buffer-live-p helm-current-buffer)
helm-current-buffer)
(setq helm-current-buffer
(current-buffer)))
,@body))
(defun helm-buffer-get ()
"Return `helm-action-buffer' if shown otherwise `helm-buffer'."
(if (helm-action-window)
helm-action-buffer
helm-buffer))
(defun helm-window ()
"Window of `helm-buffer'."
(get-buffer-window (helm-buffer-get) 0))
(defun helm-action-window ()
"Window of `helm-action-buffer'."
(get-buffer-window helm-action-buffer 'visible))
(defmacro with-helm-window (&rest body)
"Be sure BODY is excuted in the helm window."
(declare (indent 0) (debug t))
`(with-selected-window (helm-window)
,@body))
;; Yank text at point.
;;
;;
(defun helm-yank-text-at-point ()
"Yank text at point in `helm-current-buffer' into minibuffer."
(interactive)
(with-helm-current-buffer
(let ((fwd-fn (or helm-yank-text-at-point-function #'forward-word)))
;; Start to initial point if C-w have never been hit.
(unless helm-yank-point (setq helm-yank-point (point)))
(save-excursion
(goto-char helm-yank-point)
(funcall fwd-fn 1)
(helm-set-pattern
(concat
helm-pattern (replace-regexp-in-string
"\\`\n" ""
(buffer-substring-no-properties
helm-yank-point (point)))))
(setq helm-yank-point (point))))))
(defun helm-reset-yank-point ()
(setq helm-yank-point nil))
(add-hook 'helm-cleanup-hook 'helm-reset-yank-point)
(add-hook 'helm-after-initialize-hook 'helm-reset-yank-point)
;;; Ansi
;;
;;
(defvar helm--ansi-color-regexp
"\033\\[\\(K\\|[0-9;]*m\\)")
(defvar helm--ansi-color-drop-regexp
"\033\\[\\([ABCDsuK]\\|[12][JK]\\|=[0-9]+[hI]\\|[0-9;]*[Hf]\\)")
(defun helm--ansi-color-apply (string)
"A version of `ansi-color-apply' immune to upstream changes.
Similar to the emacs-24.5 version without support to `ansi-color-context'
which is buggy in emacs.
Modify also `ansi-color-regexp' by using own variable `helm--ansi-color-regexp'
that match whole STRING.
This is needed to provide compatibility for both emacs-25 and emacs-24.5
as emacs-25 version of `ansi-color-apply' is partially broken."
(let ((start 0)
codes end escape-sequence
result colorized-substring)
;; Find the next escape sequence.
(while (setq end (string-match helm--ansi-color-regexp string start))
(setq escape-sequence (match-string 1 string))
;; Colorize the old block from start to end using old face.
(when codes
(put-text-property
start end 'font-lock-face (ansi-color--find-face codes) string))
(setq colorized-substring (substring string start end)
start (match-end 0))
;; Eliminate unrecognized ANSI sequences.
(while (string-match helm--ansi-color-drop-regexp colorized-substring)
(setq colorized-substring
(replace-match "" nil nil colorized-substring)))
(push colorized-substring result)
;; Create new face, by applying escape sequence parameters.
(setq codes (ansi-color-apply-sequence escape-sequence codes)))
;; If the rest of the string should have a face, put it there.
(when codes
(put-text-property
start (length string)
'font-lock-face (ansi-color--find-face codes) string))
;; Save the remainder of the string to the result.
(if (string-match "\033" string start)
(push (substring string start (match-beginning 0)) result)
(push (substring string start) result))
(apply 'concat (nreverse result))))
(provide 'helm-lib)
;; Local Variables:
;; byte-compile-warnings: (not cl-functions obsolete)
;; coding: utf-8
;; indent-tabs-mode: nil
;; End:
;;; helm-lib ends here