Hacking Gmail

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188 Part III — Conquering <strong>Gmail</strong> Listing 13-2 (continued) Ben Hammersley Heads Here’s a nice message. Jan 6 If you look at this code, and know what you already do about the way <strong>Gmail</strong> works, it’s easy to deduce the structure of the page. Each line of the Inbox is structured like this: A LINK TO A STAR IMAGE IF THE MESSAGE IS STARRED THE AUTHOR NAME THE LABEL THE SUBJECT LINE THE DATE. And so, to retrieve your Inbox, you simply retrieve this page, walk through the code until you get to the correct table, collect every instance of the preceding structure, and parse out the details. This is what you shall do now. Parsing the Inbox Listing 13-3 shows some Perl code that uses HTML::TokeParser to walk through the HTML-only Inbox page that you saved earlier and print out details of the messages therein. Note that it loads the page as a text file from the disk, and just
Chapter 13 — Building an API from the HTML-Only Version 189 prints the results out to the screen. You will need to save the Inbox source as ‘gmailinboxsource.html’ and save it in the same directory as this script. You’ll use these results in a more meaningful way later. Listing 13-3: Walking Through the Inbox with HTML::TokeParser #!/usr/bin/perl use warnings; use strict; use HTML::TokeParser; open( FILEIN, “gmailinboxsource.html” ); undef $/; my $filecontents = ; my $stream = HTML::TokeParser->new( \$filecontents ); # Go to the right part of the page, skipping 8 tables (!!!) $stream->get_tag(“table”); $stream->get_tag(“table”); $stream->get_tag(“table”); $stream->get_tag(“table”); $stream->get_tag(“table”); $stream->get_tag(“table”); $stream->get_tag(“table”); $stream->get_tag(“table”); $stream->get_tag(“table”); # Now we loop through the table, getting the dates and locations. We need to stop at the bottom of the table, so we test for a closing /table tag. PARSE: while ( my $tag = $stream->get_tag ) { my $nexttag = $stream->get_tag->[0]; last PARSE if ( $nexttag eq ‘table’ ); $stream->unget_token(); my $input_tag = $stream->get_tag(“input”); my $threadid = $input_tag->[1]{value}; my $starred = $stream->get_trimmed_text() || “Not Starred”; Continued
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Hacking Gmail Ben Hammersley
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Hacking Gmail Ben Hammersley
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Meanwhile, back in Florence, Anna,
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Credits Executive Editor Chris Webb
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Contents Acknowledgments . . . . .
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Contents xiii Chapter 7: Gmail Libr
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Contents xv How GmailFS Works . . .
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Introduction Welcome to Hacking Gma
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Hacking Gmail
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Desktop Integration chapter The fir
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Chapter 1 — Desktop Integration 5
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12 Part I — Starting to Use Gmail
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Skinning Gmail chapter Being a web-
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Chapter 4 — Skinning Gmail 31 FIG
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Chapter 4 — Skinning Gmail 47 } /
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Chapter 4 — Skinning Gmail 49 /*
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Chapter 4 — Skinning Gmail 51 The
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How Gmail Works chapter By now you
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Chapter 5 — How Gmail Works 55 FI
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Chapter 5 — How Gmail Works 85 pX
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Chapter 5 — How Gmail Works 89 li
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92 Part II — Getting Inside Gmail
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100 Part II — Getting Inside Gmai
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Gmail Libraries chapter In the prev
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Chapter 7 — Gmail Libraries 119 H
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Page 191: Conquering Gmail part You’re the
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Page 227 and 228: Using Gmail to . . . chapter Gmail
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Page 247 and 248: Long Code Listings appendix This bo
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Appendix — Long Code Listings 239
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Index SYMBOLS backslash (/) keyboar
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Index ■ F-G 277 fstab, mounting G
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Index ■ H-L 279 overview, 186-188
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Index ■ L-M 281 Mail::Webmail::Gm
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Index ■ P-S 283 j key, 18 k key,
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