Add 'template' as a search/replace input field in regexp mode

src/calibre/gui2/dialogs/metadata_bulk.py

@@ -12,6 +12,7 @@ from PyQt4 import QtGui
 from calibre.gui2.dialogs.metadata_bulk_ui import Ui_MetadataBulkDialog
 from calibre.gui2.dialogs.tag_editor import TagEditor
 from calibre.ebooks.metadata import string_to_authors, authors_to_string
+from calibre.ebooks.metadata.book.base import composite_formatter
 from calibre.gui2.custom_column_widgets import populate_metadata_page
 from calibre.gui2 import error_dialog
 from calibre.gui2.progress_indicator import ProgressIndicator
@@ -268,6 +269,7 @@ class MetadataBulkDialog(QDialog, Ui_MetadataBulkDialog):
     def prepare_search_and_replace(self):
         self.search_for.initialize('bulk_edit_search_for')
         self.replace_with.initialize('bulk_edit_replace_with')
+        self.s_r_template.initialize('bulk_edit_template')
         self.test_text.initialize('bulk_edit_test_test')
         self.all_fields = ['']
         self.writable_fields = ['']
@@ -282,6 +284,7 @@ class MetadataBulkDialog(QDialog, Ui_MetadataBulkDialog):
             if f in ['sort'] or fm[f]['datatype'] == 'composite':
                 self.all_fields.append(f)
         self.all_fields.sort()
+        self.all_fields.insert(1, '{template}')
         self.writable_fields.sort()
         self.search_field.setMaxVisibleItems(25)
         self.destination_field.setMaxVisibleItems(25)
@@ -360,15 +363,21 @@ class MetadataBulkDialog(QDialog, Ui_MetadataBulkDialog):
         self.test_text.editTextChanged[str].connect(self.s_r_paint_results)
         self.comma_separated.stateChanged.connect(self.s_r_paint_results)
         self.case_sensitive.stateChanged.connect(self.s_r_paint_results)
+        self.s_r_template.lost_focus.connect(self.s_r_template_changed)
         self.central_widget.setCurrentIndex(0)
 
         self.search_for.completer().setCaseSensitivity(Qt.CaseSensitive)
         self.replace_with.completer().setCaseSensitivity(Qt.CaseSensitive)
+        self.s_r_template.completer().setCaseSensitivity(Qt.CaseSensitive)
 
         self.s_r_search_mode_changed(self.search_mode.currentIndex())
 
     def s_r_get_field(self, mi, field):
         if field:
+            if field == '{template}':
+                v = composite_formatter.safe_format\
+                    (unicode(self.s_r_template.text()), mi, _('S/R TEMPLATE ERROR'), mi)
+                return [v]
             fm = self.db.metadata_for_field(field)
             if field == 'sort':
                 val = mi.get('title_sort', None)
@@ -384,7 +393,16 @@ class MetadataBulkDialog(QDialog, Ui_MetadataBulkDialog):
             val = []
         return val
 
+    def s_r_template_changed(self):
+        self.s_r_search_field_changed(self.search_field.currentIndex())
+
     def s_r_search_field_changed(self, idx):
+        if self.search_mode.currentIndex() != 0 and idx == 1: # Template
+            self.s_r_template.setVisible(True)
+            self.template_label.setVisible(True)
+        else:
+            self.s_r_template.setVisible(False)
+            self.template_label.setVisible(False)
         for i in range(0, self.s_r_number_of_books):
             w = getattr(self, 'book_%d_text'%(i+1))
             mi = self.db.get_metadata(self.ids[i], index_is_id=True)

src/calibre/gui2/dialogs/metadata_bulk.ui

@@ -501,6 +501,29 @@ Future conversion of these books will use the default settings.</string>
           </layout>
          </item>
          <item row="4" column="0">
+          <widget class="QLabel" name="template_label">
+           <property name="text">
+            <string>Te&amp;mplate:</string>
+           </property>
+           <property name="buddy">
+            <cstring>s_r_template</cstring>
+           </property>
+          </widget>
+         </item>
+         <item row="4" column="1">
+          <widget class="HistoryLineEdit" name="s_r_template">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+             <horstretch>100</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="toolTip">
+            <string>Enter a template to be used as the source for the search/replace</string>
+           </property>
+          </widget>
+         </item>
+         <item row="5" column="0">
           <widget class="QLabel" name="xlabel_2">
            <property name="text">
             <string>&amp;Search for:</string>
@@ -510,7 +533,7 @@ Future conversion of these books will use the default settings.</string>
            </property>
           </widget>
          </item>
-         <item row="4" column="1">
+         <item row="5" column="1">
           <widget class="HistoryLineEdit" name="search_for">
            <property name="sizePolicy">
             <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
@@ -523,7 +546,7 @@ Future conversion of these books will use the default settings.</string>
            </property>
           </widget>
          </item>
-         <item row="4" column="2">
+         <item row="5" column="2">
           <widget class="QCheckBox" name="case_sensitive">
            <property name="toolTip">
             <string>Check this box if the search string must match exactly upper and lower case. Uncheck it if case is to be ignored</string>
@@ -536,7 +559,7 @@ Future conversion of these books will use the default settings.</string>
            </property>
           </widget>
          </item>
-         <item row="5" column="0">
+         <item row="6" column="0">
           <widget class="QLabel" name="xlabel_4">
            <property name="text">
             <string>&amp;Replace with:</string>
@@ -546,14 +569,14 @@ Future conversion of these books will use the default settings.</string>
            </property>
           </widget>
          </item>
-         <item row="5" column="1">
+         <item row="6" column="1">
           <widget class="HistoryLineEdit" name="replace_with">
            <property name="toolTip">
             <string>The replacement text. The matched search text will be replaced with this string</string>
            </property>
           </widget>
          </item>
-         <item row="5" column="2">
+         <item row="6" column="2">
           <layout class="QHBoxLayout" name="verticalLayout">
            <item>
             <widget class="QLabel" name="label_41">
@@ -588,7 +611,7 @@ field is processed. In regular expression mode, only the matched text is process
            </item>
           </layout>
          </item>
-         <item row="6" column="0">
+         <item row="7" column="0">
           <widget class="QLabel" name="destination_field_label">
            <property name="text">
             <string>&amp;Destination field:</string>
@@ -598,14 +621,15 @@ field is processed. In regular expression mode, only the matched text is process
            </property>
           </widget>
          </item>
-         <item row="6" column="1">
+         <item row="7" column="1">
           <widget class="QComboBox" name="destination_field">
            <property name="toolTip">
-            <string>The field that the text will be put into after all replacements. If blank, the source field is used.</string>
+            <string>The field that the text will be put into after all replacements.
+If blank, the source field is used if the field is modifiable</string>
            </property>
           </widget>
          </item>
-         <item row="6" column="2">
+         <item row="7" column="2">
           <layout class="QHBoxLayout" name="verticalLayout">
            <item>
             <widget class="QLabel" name="replace_mode_label">
@@ -653,7 +677,7 @@ nothing should be put between the original text and the inserted text</string>
            </item>
           </layout>
          </item>
-         <item row="7" column="1">
+         <item row="8" column="1">
           <widget class="QLabel" name="xlabel_3">
            <property name="text">
             <string>Test &amp;text</string>
@@ -663,7 +687,7 @@ nothing should be put between the original text and the inserted text</string>
            </property>
           </widget>
          </item>
-         <item row="7" column="2">
+         <item row="8" column="2">
           <widget class="QLabel" name="label_51">
            <property name="text">
             <string>Test re&amp;sult</string>
@@ -784,6 +808,7 @@ nothing should be put between the original text and the inserted text</string>
   <tabstop>central_widget</tabstop>
   <tabstop>search_field</tabstop>
   <tabstop>search_mode</tabstop>
+  <tabstop>s_r_template</tabstop>
   <tabstop>search_for</tabstop>
   <tabstop>case_sensitive</tabstop>
   <tabstop>replace_with</tabstop>

src/calibre/gui2/widgets.py

@@ -524,6 +524,8 @@ class EnComboBox(QComboBox):
 
 class HistoryLineEdit(QComboBox):
 
+    lost_focus = pyqtSignal()
+
     def __init__(self, *args):
         QComboBox.__init__(self, *args)
         self.setEditable(True)
@@ -559,6 +561,10 @@ class HistoryLineEdit(QComboBox):
     def text(self):
         return self.currentText()
 
+    def focusOutEvent(self, e):
+        QComboBox.focusOutEvent(self, e)
+        self.lost_focus.emit()
+
 class ComboBoxWithHelp(QComboBox):
     '''
     A combobox where item 0 is help text. CurrentText will return '' for item 0.