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Thread: Help with a regular expression.

  1. 10th March 2017, 07:59 #1
    ayanda83
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    Default Help with a regular expression.

    Hi there guys, I am trying to put together a regular expression for pulling out data from the html below. The text I am interested in, is in line 3,22, and "href" of line 25. I have have put together this regular expression for line 25 and it works perfectly
    Qt Code: 
    1. <a\\s+class=\"linkDetails\"\\s+href=\"(.*)\"\\s+target=\"_blank\"\\s+title=\"Details\">
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    I would like to extend the above regular expression to retrieve line 3 and 22 as well and through the use of QRegExp::cap(), I can store the data accordingly in a QStringList. I could use a little help with extending the R.E.
    Qt Code: 
    1. <tr class="gridDetails">
    2.                             <td style="width: 70px;">
    3.                                 R01170512A
    4.                             </td>
    5.                             <td>
    6.  
    7.                                 Gloves;nytrile, heavy duty;10
    8.                             </td>
    9.                             <td style="width: 100px; padding-right: 10px;">
    10.                                 Clothing - PPE &amp; Accessories
    11.                             </td>
    12.                             <td style="width: 70px; padding-right: 10px;">
    13.                                 2017/03/15
    14.                             </td>
    15.                             <td style="width: 70px; padding-right: 10px;">
    16.                                 3/15/2017 10:00:00 AM
    17.                             </td>
    18.                             <td style="width: 70px; padding-right: 10px;">
    19.                                 2017/03/09
    20.                             </td>
    21.                             <td style="width: 70px; padding-right: 10px;">
    22.                                 3/9/2017 9:59:27 AM
    23.                             </td>
    24.                             <td style="width: 10px; padding-right: 5px; padding-left: 5px;">
    25.                                 <a class="linkDetails" href="/web1/ProcurementPortal/RFQ/Details/123668" target="_blank" title="Details"> </a>
    26.                             </td>
    27.                         </tr>
    28.                         <tr class="gridDetails">
    29.                             <td style="width: 70px;">
    30.                                 R01170554A
    31.                             </td>
    32.                             <td>
    33.  
    34.                                 Overall trousers;white;34/87cm
    35.                             </td>
    36.                             <td style="width: 100px; padding-right: 10px;">
    37.                                 Clothing - PPE &amp; Accessories
    38.                             </td>
    39.                             <td style="width: 70px; padding-right: 10px;">
    40.                                 2017/03/15
    41.                             </td>
    42.                             <td style="width: 70px; padding-right: 10px;">
    43.                                 3/15/2017 10:00:00 AM
    44.                             </td>
    45.                             <td style="width: 70px; padding-right: 10px;">
    46.                                 2017/03/09
    47.                             </td>
    48.                             <td style="width: 70px; padding-right: 10px;">
    49.                                 3/9/2017 9:59:27 AM
    50.                             </td>
    51.                             <td style="width: 10px; padding-right: 5px; padding-left: 5px;">
    52.                                 <a class="linkDetails" href="/web1/ProcurementPortal/RFQ/Details/123667" target="_blank" title="Details"> </a>
    53.                             </td>
    54.                         </tr>
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  2. 10th March 2017, 12:25 #2
    Santosh Reddy's Avatar
    Santosh Reddy
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    Default Re: Help with a regular expression.

    Can't you just parse the file and pick the required tags.
    When you know how to do it then you may do it wrong.
    When you don't know how to do it then it is not that you may do it wrong but you may not do it right.
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  3. 10th March 2017, 12:33 #3
    ayanda83
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    Default Re: Help with a regular expression.

    I tried using QDom classes to parse but it turns out that QDom classes don't work with html, so I tried using external libs like libxml++ and libxml2 but I got a bunch of linker errors I could not figure out. What can I use to parse html in Qt? thanking you in advance.
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  4. 11th March 2017, 01:46 #4
    d_stranz's Avatar
    d_stranz
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    Default Re: Help with a regular expression.

    See the answer at this stackoverflow link on using QXmlQuery to parse HTML.
    <=== The Great Pumpkin says ===>
    Please use CODE tags when posting source code so it is more readable. Click "Go Advanced" and then the "#" icon to insert the tags. Paste your code between them.
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