]> code.delx.au - gnu-emacs/blobdiff - lisp/ediff-ptch.el
(c-backward-to-start-of-if): Don't assume point-min == 1.
[gnu-emacs] / lisp / ediff-ptch.el
index b3ee2f9a5277cdfd19910298657d61a232219c26..0b6bc49e2903eef9070f40ae46292a2cf6f90081 100644 (file)
@@ -44,6 +44,8 @@
   (let ((load-path (cons (expand-file-name ".") load-path)))
     (or (featurep 'ediff-init)
        (load "ediff-init.el" nil nil 'nosuffix))
+    (or (featurep 'ediff-mult)
+       (load "ediff-mult.el" nil nil 'nosuffix))
     (or (featurep 'ediff)
        (load "ediff.el" nil nil 'nosuffix))
     ))
@@ -181,11 +183,21 @@ program."
       count)))
 
 ;; Scan BUF (which is supposed to contain a patch) and make a list of the form 
-;;    ((filename1 marker1 marker2) (filename2 marker1 marker2) ...)
-;; where filenames are files to which patch would have applied the patch;
-;; marker1 delimits the beginning of the corresponding patch and marker2 does
-;; it for the end.  This list is then assigned to ediff-patch-map.
-;; Returns the number of elements in the list ediff-patch-map
+;;    ((nil nil filename-spec1 marker1 marker2)
+;;          (nil nil filename-spec2 marker1 marker2) ...)
+;; where filename-spec[12] are files to which the `patch' program would 
+;; have applied the patch.
+;; nin, nil are placeholders. See ediff-make-new-meta-list-element in
+;;    ediff-meta.el for the explanations.
+;; In the beginning we don't know exactly which files need to be patched.
+;; We usually come up with two candidates and ediff-file-name-sans-prefix
+;;    resolves this later.
+;;
+;; The marker `marker1' delimits the beginning of the corresponding patch and
+;;    `marker2' does it for the end.
+;; The result of ediff-map-patch-buffer is a list, which is then assigned
+;; to ediff-patch-map.
+;; The function returns the number of elements in the list ediff-patch-map
 (defun ediff-map-patch-buffer (buf)
   (ediff-with-current-buffer buf
     (let ((count 0)
@@ -210,7 +222,8 @@ program."
                  end2 (or (match-end 3) (match-end 5)))
            ;; possible-file-names is holding the new file names until we
            ;; insert the old file name in the patch map
-           ;; It is a pair (filename from 1st header line . fn from 2nd line)
+           ;; It is a pair
+           ;;     (filename-from-1st-header-line . fn from 2nd line)
            (setq possible-file-names
                  (cons (if (and beg1 end1)
                            (buffer-substring beg1 end1)
@@ -227,14 +240,19 @@ program."
            (goto-char mark2-end)
            
            (if filenames
-               (setq patch-map (cons (list filenames mark1 mark2) patch-map)))
+               (setq patch-map
+                     (cons (ediff-make-new-meta-list-element
+                            filenames mark1 mark2)
+                           patch-map)))
            (setq mark1 mark2
                  mark1-end mark2-end
                  filenames possible-file-names))
          (setq opoint (point)
                count (1+ count))))
       (setq mark2 (point-max-marker)
-           patch-map (cons (list possible-file-names mark1 mark2) patch-map))
+           patch-map (cons (ediff-make-new-meta-list-element
+                            possible-file-names mark1 mark2)
+                           patch-map))
       (setq ediff-patch-map (nreverse patch-map))
       count)))
 
@@ -254,44 +272,53 @@ program."
                        ;; directory part of filename
                        (file-name-as-directory filename)
                      (file-name-directory filename)))
+       ;; Filename-spec is objA; at this point it is represented as 
+       ;; (file1 . file2). We get it using ediff-get-session-objA
        ;; directory part of the first file in the patch
-       (base-dir1 (file-name-directory (car (car (car ediff-patch-map)))))
-       (base-dir2 (file-name-directory (cdr (car (car ediff-patch-map)))))
+       (base-dir1 (file-name-directory
+                   (car (ediff-get-session-objA-name (car ediff-patch-map)))))
+       ;; directory part of the 2nd file in the patch
+       (base-dir2 (file-name-directory
+                   (cdr (ediff-get-session-objA-name (car ediff-patch-map)))))
        )
 
     ;; chop off base-dirs
-    (mapcar (lambda (triple)
-             (or (string= (car (car triple)) "/dev/null")
-                 (setcar (car triple)
-                         (ediff-file-name-sans-prefix
-                          (car (car triple)) base-dir1)))
-             (or (string= (cdr (car triple)) "/dev/null")
-                 (setcdr (car triple)
+    (mapcar (lambda (session-info)
+             (let ((proposed-file-names
+                    (ediff-get-session-objA-name session-info)))
+               (or (string= (car proposed-file-names) "/dev/null")
+                   (setcar proposed-file-names
+                           (ediff-file-name-sans-prefix
+                            (car proposed-file-names) base-dir1)))
+             (or (string=
+                  (cdr proposed-file-names) "/dev/null")
+                 (setcdr proposed-file-names
                          (ediff-file-name-sans-prefix
-                          (cdr (car triple)) base-dir2)))
-             )
+                          (cdr proposed-file-names) base-dir2)))
+             ))
            ediff-patch-map)
 
     ;; take the given file name into account
     (or (file-directory-p filename)
        (string= "/dev/null" filename)
-       (progn
-         (setcar (car ediff-patch-map)
-                 (cons (file-name-nondirectory filename)
-                       (file-name-nondirectory filename)))))
+       (setcar (ediff-get-session-objA (car ediff-patch-map))
+               (cons (file-name-nondirectory filename)
+                     (file-name-nondirectory filename))))
 
     ;; prepend actual-dir
-    (mapcar (lambda (triple)
-             (if (and (string-match "^/null/" (car (car triple)))
-                      (string-match "^/null/" (cdr (car triple))))
-                 ;; couldn't strip base-dir1 and base-dir2
-                 ;; hence, something wrong
-                 (progn
-                   (with-output-to-temp-buffer ediff-msg-buffer
-                     (ediff-with-current-buffer standard-output
-                       (fundamental-mode))
-                     (princ
-                      (format "
+    (mapcar (lambda (session-info)
+             (let ((proposed-file-names
+                    (ediff-get-session-objA-name session-info)))
+               (if (and (string-match "^/null/" (car proposed-file-names))
+                        (string-match "^/null/" (cdr proposed-file-names)))
+                   ;; couldn't strip base-dir1 and base-dir2
+                   ;; hence, something is wrong
+                   (progn
+                     (with-output-to-temp-buffer ediff-msg-buffer
+                       (ediff-with-current-buffer standard-output
+                         (fundamental-mode))
+                       (princ
+                        (format "
 The patch file contains a context diff for
        %s
        %s
@@ -302,47 +329,52 @@ please enter it now.
 If you don't know and still would like to apply patches to
 other files, enter /dev/null
 "
-                              (substring (car (car triple)) 6)
-                              (substring (cdr (car triple)) 6))))
-                   (let ((directory t)
-                         user-file)
-                     (while directory
-                       (setq user-file
-                             (read-file-name
-                              "Please enter file name: "
-                              actual-dir actual-dir t))
-                       (if (not (file-directory-p user-file))
-                           (setq directory nil)
-                         (setq directory t)
-                         (beep)
-                         (message "%s is a directory" user-file)
-                         (sit-for 2)))
-                     (setcar triple (cons user-file user-file))))
-               (setcar (car triple)
-                       (expand-file-name 
-                        (concat actual-dir (car (car triple)))))
-               (setcdr (car triple)
-                       (expand-file-name 
-                        (concat actual-dir (cdr (car triple))))))
-             )
+                                (substring (car proposed-file-names) 6)
+                                (substring (cdr proposed-file-names) 6))))
+                     (let ((directory t)
+                           user-file)
+                       (while directory
+                         (setq user-file
+                               (read-file-name
+                                "Please enter file name: "
+                                actual-dir actual-dir t))
+                         (if (not (file-directory-p user-file))
+                             (setq directory nil)
+                           (setq directory t)
+                           (beep)
+                           (message "%s is a directory" user-file)
+                           (sit-for 2)))
+                       (setcar (ediff-get-session-objA session-info)
+                               (cons user-file user-file))))
+                 (setcar proposed-file-names
+                         (expand-file-name 
+                          (concat actual-dir (car proposed-file-names))))
+                 (setcdr proposed-file-names
+                         (expand-file-name 
+                          (concat actual-dir (cdr proposed-file-names)))))
+               ))
            ediff-patch-map)
     ;; check for the shorter existing file in each pair and discard the other
     ;; one
-    (mapcar (lambda (triple)
-             (let* ((file1 (car (car triple)))
-                    (file2 (cdr (car triple)))
+    (mapcar (lambda (session-info)
+             (let* ((file1 (car (ediff-get-session-objA-name session-info)))
+                    (file2 (cdr (ediff-get-session-objA-name session-info)))
+                    (session-file-object
+                     (ediff-get-session-objA session-info))
                     (f1-exists (file-exists-p file1))
                     (f2-exists (file-exists-p file2)))
                (cond
                 ((and (< (length file2) (length file1))
                       f2-exists)
-                 (setcar triple file2))
+                 ;; replace file-pair with the winning file2
+                 (setcar session-file-object file2))
                 ((and (< (length file1) (length file2))
                       f1-exists)
-                 (setcar triple file1))
+                 ;; replace file-pair with the winning file1
+                 (setcar session-file-object file1))
                 ((and f1-exists f2-exists
                       (string= file1 file2))
-                 (setcar triple file1))
+                 (setcar session-file-object file1))
                 ((and f1-exists f2-exists)
                  (with-output-to-temp-buffer ediff-msg-buffer
                    (ediff-with-current-buffer standard-output
@@ -359,11 +391,11 @@ Please advice:
     Type `n' to use %s as the target.
 "
                                   file1 file2 file2 file1)))
-                 (setcar triple
+                 (setcar session-file-object
                          (if (y-or-n-p (format "Use %s ? " file2))
                              file2 file1)))
-                (f2-exists (setcar triple file2))
-                (f1-exists (setcar triple file1))
+                (f2-exists (setcar session-file-object file2))
+                (f1-exists (setcar session-file-object file1))
                 (t
                  (with-output-to-temp-buffer ediff-msg-buffer
                    (ediff-with-current-buffer standard-output
@@ -392,7 +424,7 @@ are two possible targets for this patch.  However, these files do not exist."
                        (beep)
                        (message "%s is a directory" target)
                        (sit-for 2)))
-                   (setcar triple target))))))
+                   (setcar session-file-object target))))))
            ediff-patch-map)
     ))
 
@@ -491,9 +523,14 @@ optional argument, then use it."
        (ediff-patch-file-internal
         patch-buf
         (if (and ediff-patch-map
-                 (not (string-match "^/dev/null" (car (car ediff-patch-map))))
-                 (> (length (car (car ediff-patch-map))) 1))
-            (car (car ediff-patch-map))
+                 (not (string-match
+                       "^/dev/null"
+                       ;; this is the file to patch
+                       (ediff-get-session-objA-name (car ediff-patch-map))))
+                 (> (length 
+                     (ediff-get-session-objA-name (car ediff-patch-map)))
+                    1))
+            (ediff-get-session-objA-name (car ediff-patch-map))
           filename)
         startup-hooks)
       (ediff-multi-patch-internal patch-buf startup-hooks))
@@ -739,8 +776,13 @@ you can still examine the changes via M-x ediff-files"
     (setq meta-buf (ediff-prepare-meta-buffer 
                    'ediff-filegroup-action
                    (ediff-with-current-buffer patch-buf
-                     ;; nil replaces a regular expression
-                     (cons (list nil (format "%S" patch-buf))
+                     (cons (ediff-make-new-meta-list-header
+                            nil                     ; regexp
+                            (format "%S" patch-buf) ; obj A
+                            nil nil                 ; objects B,C
+                            nil                     ; merge-auto-store-dir
+                            nil                     ; comparison-func
+                            )
                            ediff-patch-map))
                    "*Ediff Session Group Panel"
                    'ediff-redraw-directory-group-buffer