darcs - qt.examples

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38

39 (in-package :qt.examples)

40

41 ;; Small example using only qt.core

42

43 (defun xml-lint (input-file-path)

44 "Reads the XML from the file at INPUT-FILE-PATH and returns a copy."

45 (qt:with-core-app ()

46 (let ((input-file (make-instance 'qt:file

47 :arg0 input-file-path)))

48 (unless (cxx:exists input-file)

49 (error "File ~A does not exist." input-file-path))

50 (unless (cxx:open input-file qt:iodevice.+read-only+)

51 (error "Failed to open file ~A." input-file-path))

52

53 (let* ((reader (make-instance 'qt:xml-stream-reader

54 :arg0 input-file))

55 (output (make-instance 'qt:byte-array))

56 (writer (make-instance 'qt:xml-stream-writer

57 :arg0 output)))

58 (loop until (cxx:at-end reader) do

59 (cxx:read-next reader)

60 (when (cxx:has-error reader)

61 (error "Error: ~A in file ~A at line ~A, column ~A."

62 (cxx:error-string reader)

63 input-file-path

64 (cxx:line-number reader) (cxx:column-number reader)))

65 (cxx:write-current-token writer reader))

66 (cxx:data output)))))