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(Tcl) Fetch ISBN XML from isbndb.com and Parse

Demonstrates sending a query to isbndb.com and parsing the XML response.

Chilkat Tcl Extension Downloads

Chilkat Tcl Extension Downloads

load ./chilkat.dll

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

set http [new_CkHttp]

# The access_key in this URL is a valid access key, but limited to 100 queries per day.
# If the key does not work, it may be that others were testing and exhausted the limit.
set strXml [CkHttp_quickGetStr $http "http://isbndb.com/api/books.xml?access_key=OV8L2Y9I&results=details&index1=isbn&value1=0443074348"]
if {[expr [CkHttp_get_LastMethodSuccess $http] != 1]} then {
    puts [CkHttp_lastErrorText $http]
    delete_CkHttp $http
    exit
}

set xml [new_CkXml]

set success [CkXml_LoadXml $xml $strXml]

# The XML returned for this URL is the following:

# <?xml version="1.0" encoding="UTF-8" ?>

# <ISBNdb server_time="2007-10-25T14:07:25Z">
#     <BookList total_results="1" page_size="10" page_number="1" shown_results="1">
#         <BookData book_id="diagnostic_histopathology_of_tumors_2_volume_set_with_cd_rom" isbn="0443074348">
#             <Title>Diagnostic Histopathology of Tumors: 2-Volume Set with CD-ROMs</Title>
#             <TitleLong>Diagnostic Histopathology of Tumors: 2-Volume Set with CD-ROMs (Diagnostic Histopathology of Tumors (Fletcher))</TitleLong>
#             <AuthorsText>Christopher D. M. Fletcher (Editor)</AuthorsText>
#             <PublisherText publisher_id="churchill_livingstone">Churchill Livingstone</PublisherText>
#             <Details dewey_decimal="616" physical_description_text="2166 pages" language="" edition_info="Hardcover; 2007-03-13" dewey_decimal_normalized="616" lcc_number="" change_time="2006-12-13T14:53:42Z" price_time="2007-10-25T01:12:13Z" />
#         </BookData>
#     </BookList>
# </ISBNdb>

# First, navigate to the BookData node:
set success [CkXml_FirstChild2 $xml]
set success [CkXml_FirstChild2 $xml]

# Show the Title and AuthorsText:
puts [CkXml_getChildContent $xml Title]
puts [CkXml_getChildContent $xml AuthorsText]

# Show the publisher_id attribute of the PublisherText node:
# xml2 is a CkXml

set xml2 [CkXml_FindChild $xml "PublisherText"]
puts [CkXml_getAttrValue $xml2 publisher_id]

delete_CkXml $xml2

# Save the XML to a file:
set success [CkXml_SaveXml $xml "book.xml"]

delete_CkHttp $http
delete_CkXml $xml

 

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