Git: Provide a real highlighter for interactive rebase

* Kate highlighter doesn't have enough colors
* It works out of the box only on Windows
* New editor support links

Change-Id: I09bbaef08574660e535ccb86c2c460d5976fc2e3
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

1 files changed, 56 insertions, 0 deletions

diff --git a/src/plugins/git/githighlighters.cpp b/src/plugins/git/githighlighters.cpp
index d223a5e524..2f00c9f2db 100644
--- a/src/plugins/git/githighlighters.cpp
+++ b/src/plugins/git/githighlighters.cpp
@@ -38,6 +38,8 @@
 namespace Git {
 namespace Internal {
 
+static const char CHANGE_PATTERN[] = "\\b[a-f0-9]{7,40}\\b";
+
 // Retrieve the comment char format from the text editor.
 static QTextCharFormat commentFormat()
 {
@@ -104,5 +106,59 @@ void GitSubmitHighlighter::highlightBlock(const QString &text)
     }
 }
 
+GitRebaseHighlighter::RebaseAction::RebaseAction(const QString &regexp,
+                                                 const TextEditor::FontSettings &settings,
+                                                 TextEditor::TextStyle category)
+    : exp(regexp)
+{
+    format = settings.toTextCharFormat(category);
+}
+
+GitRebaseHighlighter::GitRebaseHighlighter(TextEditor::BaseTextDocument *parent) :
+    TextEditor::SyntaxHighlighter(parent),
+    m_hashChar(QLatin1Char('#')),
+    m_changeNumberPattern(QLatin1String(CHANGE_PATTERN))
+{
+    const TextEditor::FontSettings settings = TextEditor::TextEditorSettings::instance()->fontSettings();
+    m_commentFormat = settings.toTextCharFormat(TextEditor::C_COMMENT);
+    m_changeFormat = settings.toTextCharFormat(TextEditor::C_DOXYGEN_COMMENT);
+    m_descFormat = settings.toTextCharFormat(TextEditor::C_STRING);
+    m_actions << RebaseAction(QLatin1String("^(p|pick)\\b"), settings, TextEditor::C_KEYWORD);
+    m_actions << RebaseAction(QLatin1String("^(r|reword)\\b"), settings, TextEditor::C_FIELD);
+    m_actions << RebaseAction(QLatin1String("^(e|edit)\\b"), settings, TextEditor::C_TYPE);
+    m_actions << RebaseAction(QLatin1String("^(s|squash)\\b"), settings, TextEditor::C_ENUMERATION);
+    m_actions << RebaseAction(QLatin1String("^(f|fixup)\\b"), settings, TextEditor::C_NUMBER);
+    m_actions << RebaseAction(QLatin1String("^(x|exec)\\b"), settings, TextEditor::C_LABEL);
+}
+
+void GitRebaseHighlighter::highlightBlock(const QString &text)
+{
+    if (text.startsWith(m_hashChar)) {
+        setFormat(0, text.size(), m_commentFormat);
+        int changeIndex = 0;
+        while ((changeIndex = m_changeNumberPattern.indexIn(text, changeIndex)) != -1) {
+            const int changeLen = m_changeNumberPattern.matchedLength();
+            setFormat(changeIndex, changeLen, m_changeFormat);
+            changeIndex += changeLen;
+        }
+        return;
+    }
+
+    foreach (const RebaseAction &action, m_actions) {
+        if (action.exp.indexIn(text) != -1) {
+            const int len = action.exp.matchedLength();
+            setFormat(0, len, action.format);
+            const int changeIndex = m_changeNumberPattern.indexIn(text, len);
+            if (changeIndex != -1) {
+                const int changeLen = m_changeNumberPattern.matchedLength();
+                const int descStart = changeIndex + changeLen + 1;
+                setFormat(changeIndex, changeLen, m_changeFormat);
+                setFormat(descStart, text.size() - descStart, m_descFormat);
+            }
+            break;
+        }
+    }
+}
+
 } // namespace Internal
 } // namespace Git