Importing expression title 'by' author help?

wn1ytw · 05-07-2011, 07:01 AM

Concerning Calibe 'regular expressions', I have again run into a dilemma: when trying to use this one importing books

from the manual:
A regular expression that works here would be [a-zA-Z]+: (?P<title>.+) by (?P<author>.+).

the expression seems to work on one test

Academic Viewpoint by James Gunn.txt
Bicentennial Man, The by Isaac Asimov.txt
Breath's a Ware That Will Not Keep by Thomas F. Monteleone.txt
Crowd of Shadows, A by Charles L. Grant.txt
Houston, Houston Do You Read by James Tiptree Jr.txt
In The Bowl by John Varley.txt
Introduction to Nebula Award Stories 12.txt
Tricentennial by Joe Haldeman.txt

but when run against several folders of files it usually misses the author!

Any clues?

scott

Manichean · 05-07-2011, 08:04 AM

It's not surprising it doesn't match the author. The expression expects a different file name than you actually have- it looks for one word followed by a colon, which is discarded, followed by "title by author". For your filenames, try something like

Code:

(?P<title>.+?)\sby\s(?P<author>.+?)

wn1ytw · 05-07-2011, 09:16 AM

When I try that, I get the first letter of the authors name.... I really am having a hard time understanding the various expressions :-)

Manichean · 05-07-2011, 10:52 AM

Code:

(?P<title>.+)\sby\s(?P<author>.+)

Tested to work. A subtle, but important, difference to the one I posted earlier

wn1ytw · 05-08-2011, 05:30 PM

Thanks!

getting a glimmer of an idea how this works........

theducks · 05-08-2011, 06:00 PM

Quote:

Originally Posted by wn1ytw

Thanks!

getting a glimmer of an idea how this works........

the stuff inside the ( ) gets passed on, the \s matches and eats white space, the 'by' matches and gets eaten

05-07-2011, 07:01 AM	#1
wn1ytw Member Posts: 24 Karma: 10 Join Date: May 2011 Location: Worcester, MA USA Device: kindle PW2, PW3 & KV; Kobo Glo HD	Importing expression title 'by' author help? Concerning Calibe 'regular expressions', I have again run into a dilemma: when trying to use this one importing books from the manual: A regular expression that works here would be [a-zA-Z]+: (?P<title>.+) by (?P<author>.+). the expression seems to work on one test Academic Viewpoint by James Gunn.txt Bicentennial Man, The by Isaac Asimov.txt Breath's a Ware That Will Not Keep by Thomas F. Monteleone.txt Crowd of Shadows, A by Charles L. Grant.txt Houston, Houston Do You Read by James Tiptree Jr.txt In The Bowl by John Varley.txt Introduction to Nebula Award Stories 12.txt Tricentennial by Joe Haldeman.txt but when run against several folders of files it usually misses the author! Any clues? scott

05-07-2011, 08:04 AM	#2
Manichean Wizard Posts: 3,130 Karma: 91256 Join Date: Feb 2008 Location: Germany Device: Cybook Gen3	It's not surprising it doesn't match the author. The expression expects a different file name than you actually have- it looks for one word followed by a colon, which is discarded, followed by "title by author". For your filenames, try something like Code: (?P<title>.+?)\sby\s(?P<author>.+?)

05-07-2011, 10:52 AM	#4
Manichean Wizard Posts: 3,130 Karma: 91256 Join Date: Feb 2008 Location: Germany Device: Cybook Gen3	Code: (?P<title>.+)\sby\s(?P<author>.+) Tested to work. A subtle, but important, difference to the one I posted earlier

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05-07-2011, 09:16 AM	#3
wn1ytw Member Posts: 24 Karma: 10 Join Date: May 2011 Location: Worcester, MA USA Device: kindle PW2, PW3 & KV; Kobo Glo HD	When I try that, I get the first letter of the authors name.... I really am having a hard time understanding the various expressions :-)

05-08-2011, 05:30 PM	#5
wn1ytw Member Posts: 24 Karma: 10 Join Date: May 2011 Location: Worcester, MA USA Device: kindle PW2, PW3 & KV; Kobo Glo HD	Thanks! getting a glimmer of an idea how this works........

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