NCX dtb:depth incorrectly set

thiago.eec · 12-20-2018, 09:37 AM

Hey, guys!

Please take a look at the NCX file below.

NCX File:

Spoiler:

Code:

<?xml version='1.0' encoding='utf-8'?>
<ncx xmlns="http://www.daisy.org/z3986/2005/ncx/" version="2005-1" xml:lang="pt-BR">
	<head>
		<meta content="uuid:6e4c4cdf-edf5-4330-8204-7dfc3a8414cf" name="dtb:uid"/>
		<meta content="3" name="dtb:depth"/>
		<meta content="calibre (3.35.0)" name="dtb:generator"/>
		<meta content="0" name="dtb:totalPageCount"/>
		<meta content="0" name="dtb:maxPageNumber"/>
	</head>
	<docTitle>
		<text>Hannibal: A origem do mal</text>
	</docTitle>
	<navMap>
		<navPoint id="num_1" playOrder="1">
			<navLabel>
				<text>Capa</text>
			</navLabel>
			<content src="OEBPS/Text/Capa.xhtml"/>
		</navPoint>
		<navPoint id="num_2" playOrder="2">
			<navLabel>
				<text>Edições BestBolso</text>
			</navLabel>
			<content src="OEBPS/Text/Autor.xhtml"/>
		</navPoint>
		<navPoint id="num_3" playOrder="3">
			<navLabel>
				<text>Rosto</text>
			</navLabel>
			<content src="OEBPS/Text/Rosto.xhtml"/>
		</navPoint>
		<navPoint id="num_4" playOrder="4">
			<navLabel>
				<text>Créditos</text>
			</navLabel>
			<content src="OEBPS/Text/Creditos.xhtml"/>
		</navPoint>
		<navPoint id="num_5" playOrder="5">
			<navLabel>
				<text>Sumário</text>
			</navLabel>
			<content src="OEBPS/Text/Sumario.xhtml"/>
		</navPoint>
		<navPoint id="num_6" playOrder="6">
			<navLabel>
				<text>Prólogo</text>
			</navLabel>
			<content src="OEBPS/Text/Prologo.xhtml"/>
		</navPoint>
		<navPoint id="num_7" playOrder="7">
			<navLabel>
				<text>Parte I</text>
			</navLabel>
			<content src="OEBPS/Text/Parte-I.xhtml"/>
			<navPoint id="num_8" playOrder="8">
				<navLabel>
					<text>1</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-01.xhtml"/>
			</navPoint>
			<navPoint id="num_9" playOrder="9">
				<navLabel>
					<text>2</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-02.xhtml"/>
			</navPoint>
			<navPoint id="num_10" playOrder="10">
				<navLabel>
					<text>3</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-03.xhtml"/>
			</navPoint>
			<navPoint id="num_11" playOrder="11">
				<navLabel>
					<text>4</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-04.xhtml"/>
			</navPoint>
			<navPoint id="num_12" playOrder="12">
				<navLabel>
					<text>5</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-05.xhtml"/>
			</navPoint>
			<navPoint id="num_13" playOrder="13">
				<navLabel>
					<text>6</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-06.xhtml"/>
			</navPoint>
			<navPoint id="num_14" playOrder="14">
				<navLabel>
					<text>7</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-07.xhtml"/>
			</navPoint>
			<navPoint id="num_15" playOrder="15">
				<navLabel>
					<text>8</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-08.xhtml"/>
			</navPoint>
			<navPoint id="num_16" playOrder="16">
				<navLabel>
					<text>9</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-09.xhtml"/>
			</navPoint>
			<navPoint id="num_17" playOrder="17">
				<navLabel>
					<text>10</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-10.xhtml"/>
			</navPoint>
			<navPoint id="num_18" playOrder="18">
				<navLabel>
					<text>11</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-11.xhtml"/>
			</navPoint>
			<navPoint id="num_19" playOrder="19">
				<navLabel>
					<text>12</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-12.xhtml"/>
			</navPoint>
			<navPoint id="num_20" playOrder="20">
				<navLabel>
					<text>13</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-13.xhtml"/>
			</navPoint>
			<navPoint id="num_21" playOrder="21">
				<navLabel>
					<text>14</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-14.xhtml"/>
			</navPoint>
			<navPoint id="num_22" playOrder="22">
				<navLabel>
					<text>15</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-15.xhtml"/>
			</navPoint>
			<navPoint id="num_23" playOrder="23">
				<navLabel>
					<text>16</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-16.xhtml"/>
			</navPoint>
			<navPoint id="num_24" playOrder="24">
				<navLabel>
					<text>17</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-17.xhtml"/>
			</navPoint>
			<navPoint id="num_25" playOrder="25">
				<navLabel>
					<text>18</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-18.xhtml"/>
			</navPoint>
			<navPoint id="num_26" playOrder="26">
				<navLabel>
					<text>19</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-19.xhtml"/>
			</navPoint>
			<navPoint id="num_27" playOrder="27">
				<navLabel>
					<text>20</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-20.xhtml"/>
			</navPoint>
			<navPoint id="num_28" playOrder="28">
				<navLabel>
					<text>21</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-21.xhtml"/>
			</navPoint>
			<navPoint id="num_29" playOrder="29">
				<navLabel>
					<text>22</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-22.xhtml"/>
			</navPoint>
			<navPoint id="num_30" playOrder="30">
				<navLabel>
					<text>23</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-23.xhtml"/>
			</navPoint>
			<navPoint id="num_31" playOrder="31">
				<navLabel>
					<text>24</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-24.xhtml"/>
			</navPoint>
			<navPoint id="num_32" playOrder="32">
				<navLabel>
					<text>25</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-25.xhtml"/>
			</navPoint>
			<navPoint id="num_33" playOrder="33">
				<navLabel>
					<text>26</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-26.xhtml"/>
			</navPoint>
			<navPoint id="num_34" playOrder="34">
				<navLabel>
					<text>27</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-27.xhtml"/>
			</navPoint>
			<navPoint id="num_35" playOrder="35">
				<navLabel>
					<text>28</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-28.xhtml"/>
			</navPoint>
			<navPoint id="num_36" playOrder="36">
				<navLabel>
					<text>29</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-29.xhtml"/>
			</navPoint>
			<navPoint id="num_37" playOrder="37">
				<navLabel>
					<text>30</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-30.xhtml"/>
			</navPoint>
			<navPoint id="num_38" playOrder="38">
				<navLabel>
					<text>31</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-31.xhtml"/>
			</navPoint>
			<navPoint id="num_39" playOrder="39">
				<navLabel>
					<text>32</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-32.xhtml"/>
			</navPoint>
		</navPoint>
		<navPoint id="num_40" playOrder="40">
			<navLabel>
				<text>Parte II</text>
			</navLabel>
			<content src="OEBPS/Text/Parte-II.xhtml"/>
			<navPoint id="num_41" playOrder="41">
				<navLabel>
					<text>33</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-33.xhtml"/>
			</navPoint>
			<navPoint id="num_42" playOrder="42">
				<navLabel>
					<text>34</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-34.xhtml"/>
			</navPoint>
			<navPoint id="num_43" playOrder="43">
				<navLabel>
					<text>35</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-35.xhtml"/>
			</navPoint>
			<navPoint id="num_44" playOrder="44">
				<navLabel>
					<text>36</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-36.xhtml"/>
			</navPoint>
			<navPoint id="num_45" playOrder="45">
				<navLabel>
					<text>37</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-37.xhtml"/>
			</navPoint>
			<navPoint id="num_46" playOrder="46">
				<navLabel>
					<text>38</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-38.xhtml"/>
			</navPoint>
			<navPoint id="num_47" playOrder="47">
				<navLabel>
					<text>39</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-39.xhtml"/>
			</navPoint>
			<navPoint id="num_48" playOrder="48">
				<navLabel>
					<text>40</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-40.xhtml"/>
			</navPoint>
			<navPoint id="num_49" playOrder="49">
				<navLabel>
					<text>41</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-41.xhtml"/>
			</navPoint>
			<navPoint id="num_50" playOrder="50">
				<navLabel>
					<text>42</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-42.xhtml"/>
			</navPoint>
			<navPoint id="num_51" playOrder="51">
				<navLabel>
					<text>43</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-43.xhtml"/>
			</navPoint>
			<navPoint id="num_52" playOrder="52">
				<navLabel>
					<text>44</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-44.xhtml"/>
			</navPoint>
			<navPoint id="num_53" playOrder="53">
				<navLabel>
					<text>45</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-45.xhtml"/>
			</navPoint>
			<navPoint id="num_54" playOrder="54">
				<navLabel>
					<text>46</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-46.xhtml"/>
			</navPoint>
			<navPoint id="num_55" playOrder="55">
				<navLabel>
					<text>47</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-47.xhtml"/>
			</navPoint>
			<navPoint id="num_56" playOrder="56">
				<navLabel>
					<text>48</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-48.xhtml"/>
			</navPoint>
			<navPoint id="num_57" playOrder="57">
				<navLabel>
					<text>49</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-49.xhtml"/>
			</navPoint>
			<navPoint id="num_58" playOrder="58">
				<navLabel>
					<text>50</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-50.xhtml"/>
			</navPoint>
			<navPoint id="num_59" playOrder="59">
				<navLabel>
					<text>51</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-51.xhtml"/>
			</navPoint>
			<navPoint id="num_60" playOrder="60">
				<navLabel>
					<text>52</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-52.xhtml"/>
			</navPoint>
			<navPoint id="num_61" playOrder="61">
				<navLabel>
					<text>53</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-53.xhtml"/>
			</navPoint>
			<navPoint id="num_62" playOrder="62">
				<navLabel>
					<text>54</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-54.xhtml"/>
			</navPoint>
			<navPoint id="num_63" playOrder="63">
				<navLabel>
					<text>55</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-55.xhtml"/>
			</navPoint>
			<navPoint id="num_64" playOrder="64">
				<navLabel>
					<text>56</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-56.xhtml"/>
			</navPoint>
			<navPoint id="num_65" playOrder="65">
				<navLabel>
					<text>57</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-57.xhtml"/>
			</navPoint>
		</navPoint>
		<navPoint id="num_66" playOrder="66">
			<navLabel>
				<text>Parte III</text>
			</navLabel>
			<content src="OEBPS/Text/Parte-III.xhtml"/>
			<navPoint id="num_67" playOrder="67">
				<navLabel>
					<text>58</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-58.xhtml"/>
			</navPoint>
			<navPoint id="num_68" playOrder="68">
				<navLabel>
					<text>59</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-59.xhtml"/>
			</navPoint>
			<navPoint id="num_69" playOrder="69">
				<navLabel>
					<text>60</text>
				</navLabel>
				<content src="OEBPS/Text/Capitulo-60.xhtml"/>
			</navPoint>
		</navPoint>
		<navPoint id="num_70" playOrder="70">
			<navLabel>
				<text>Agradecimentos</text>
			</navLabel>
			<content src="OEBPS/Text/Agradecimentos.xhtml"/>
		</navPoint>
	</navMap>
</ncx>

It seems like the value for the "dtb:depth" property on NCX heading is being incorrectly set by calibre. The value should be "2", since there are only 2 levels on the TOC. After testing with other books, it looks like calibre always increase the value by 1.

Am I missing something? Or is my assuption incorrect and the value should really be "3" for some reason?

kovidgoyal · 12-20-2018, 11:04 AM

depends on whether you consdier the counting 0 based or 1 based. calibre has always done this 1- based, it's not going to change at this point.

thiago.eec · 12-20-2018, 01:28 PM

Quote:

Originally Posted by kovidgoyal

depends on whether you consdier the counting 0 based or 1 based. calibre has always done this 1- based, it's not going to change at this point.

Kovid,

Ok. Since it's 1 based, the value should be 1 or more, right?
That's also what is defined by the specs:

Quote:

dtb:depth
Content: Positive integer indicating depth of structure of the DTB as exposed by the NCX.
Occurrence: Required

But the way calibre sets this value, a flat TOC gets a depth of 2. Shouldn't it be 1?

kovidgoyal · 12-20-2018, 10:52 PM

No an empty toc gets 1, in other words the root node is depth 1 not depth 0

thiago.eec · 12-21-2018, 06:06 AM

Ok. Thank you, Kovid.

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12-20-2018, 11:04 AM	#2
kovidgoyal creator of calibre Posts: 45,622 Karma: 28549046 Join Date: Oct 2006 Location: Mumbai, India Device: Various	depends on whether you consdier the counting 0 based or 1 based. calibre has always done this 1- based, it's not going to change at this point.

12-20-2018, 10:52 PM	#4
kovidgoyal creator of calibre Posts: 45,622 Karma: 28549046 Join Date: Oct 2006 Location: Mumbai, India Device: Various	No an empty toc gets 1, in other words the root node is depth 1 not depth 0

12-21-2018, 06:06 AM	#5
thiago.eec Wizard Posts: 1,294 Karma: 1436993 Join Date: Dec 2016 Location: Goiânia - Brazil Device: iPad, Kindle Paperwhite, Kindle Oasis	Ok. Thank you, Kovid.

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