diff options
Diffstat (limited to 'lisp/image/exif.el')
| -rw-r--r-- | lisp/image/exif.el | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/lisp/image/exif.el b/lisp/image/exif.el index 503e3ffadc7..4807df0fbbb 100644 --- a/lisp/image/exif.el +++ b/lisp/image/exif.el @@ -151,7 +151,7 @@ If the orientation isn't present in the data, return nil." (defun exif--parse-jpeg () (unless (= (exif--read-number-be 2) #xffd8) ; SOI (start of image) - (signal 'exif-error "Not a valid JPEG file")) + (signal 'exif-error '("Not a valid JPEG file"))) (cl-loop for segment = (exif--read-number-be 2) for size = (exif--read-number-be 2) ;; Stop parsing when we get to SOS (start of stream); @@ -168,7 +168,7 @@ If the orientation isn't present in the data, return nil." ;; The Exif data is in the APP1 JPEG chunk and starts with ;; "Exif\0\0". (unless (equal (exif--read-chunk 6) (string ?E ?x ?i ?f ?\0 ?\0)) - (signal 'exif-error "Not a valid Exif chunk")) + (signal 'exif-error '("Not a valid Exif chunk"))) (delete-region (point-min) (point)) (let* ((endian-marker (exif--read-chunk 2)) (le (cond @@ -180,14 +180,15 @@ If the orientation isn't present in the data, return nil." t) (t (signal 'exif-error - (format "Invalid endian-ness %s" endian-marker)))))) + (list (format "Invalid endian-ness %s" + endian-marker))))))) ;; Another magical number. (unless (= (exif--read-number 2 le) #x002a) - (signal 'exif-error "Invalid TIFF header length")) + (signal 'exif-error '("Invalid TIFF header length"))) (let ((offset (exif--read-number 4 le))) ;; Jump to where the IFD (directory) starts and parse it. (when (> (1+ offset) (point-max)) - (signal 'exif-error "Invalid IFD (directory) offset")) + (signal 'exif-error '("Invalid IFD (directory) offset"))) (goto-char (1+ offset)) (exif--parse-directory le))))) @@ -230,7 +231,7 @@ If the orientation isn't present in the data, return nil." (when (> (+ (1+ value) length) (point-max)) (signal 'exif-error - "Premature end of file")) + '("Premature end of file"))) (buffer-substring (1+ value) (+ (1+ value) length))) @@ -248,7 +249,7 @@ If the orientation isn't present in the data, return nil." ;; keep parsing. (progn (when (> (1+ next) (point-max)) - (signal 'exif-error "Invalid IFD (directory) next-offset")) + (signal 'exif-error '("Invalid IFD (directory) next-offset"))) (goto-char (1+ next)) (nconc dir (exif--parse-directory le))) ;; We've reached the end of the directories. @@ -287,7 +288,7 @@ VALUE is little-endian, otherwise it is big-endian." "Return BYTES octets from the current buffer and advance point that much. This function assumes that the current buffer is unibyte." (when (> (+ (point) bytes) (point-max)) - (signal 'exif-error "Premature end of file")) + (signal 'exif-error '("Premature end of file"))) (prog1 (buffer-substring (point) (+ (point) bytes)) (forward-char bytes))) @@ -297,7 +298,7 @@ This function assumes that the current buffer is unibyte." Advance point to after the read bytes. This function assumes that the current buffer is unibyte." (when (> (+ (point) bytes) (point-max)) - (signal 'exif-error "Premature end of file")) + (signal 'exif-error '("Premature end of file"))) (let ((sum 0)) (dotimes (_ bytes) (setq sum (+ (* sum 256) (following-char))) @@ -309,7 +310,7 @@ This function assumes that the current buffer is unibyte." Advance point to after the read bytes. This function assumes that the current buffer is unibyte." (when (> (+ (point) bytes) (point-max)) - (signal 'exif-error "Premature end of file")) + (signal 'exif-error '("Premature end of file"))) (let ((sum 0)) (dotimes (i bytes) (setq sum (+ (* (following-char) (expt 256 i)) sum)) |