- Added a file dialog example

- Added pointers to library documentation

Mac/Demo/example0/checktext.py

@@ -0,0 +1,39 @@
+"""checktext - Check that a text file has macintosh-style newlines"""
+
+import macfs
+import sys
+import EasyDialogs
+import string
+
+def main():
+	fsspec, ok = macfs.PromptGetFile('File to check end-of-lines in:', 'TEXT')
+	if not ok:
+		sys.exit(0)
+	pathname = fsspec.as_pathname()
+	fp = open(pathname, 'rb')
+	try:
+		data = fp.read()
+	except MemoryError:
+		EasyDialogs.Message('Sorry, file is too big.')
+		sys.exit(0)
+	if len(data) == 0:
+		EasyDialogs.Message('File is empty.')
+		sys.exit(0)
+	number_cr = string.count(data, '\r')
+	number_lf = string.count(data, '\n')
+	if number_cr == number_lf == 0:
+		EasyDialogs.Message('File contains no lines.')
+	if number_cr == 0:
+		EasyDialogs.Message('File has unix-style line endings')
+	elif number_lf == 0:
+		EasyDialogs.Message('File has mac-style line endings')
+	elif number_cr == number_lf:
+		EasyDialogs.Message('File probably has MSDOS-style line endings')
+	else:
+		EasyDialogs.Message('File has no recognizable line endings (binary file?)')
+	sys.exit(0)
+	
+if __name__ == '__main__':
+	main()
+	
+