| 2031 | |
| 2032 | |
| 2033 | QList<Patch> diff_match_patch::patch_fromText(const QString &textline) { |
| 2034 | QList<Patch> patches; |
| 2035 | if (textline.isEmpty()) { |
| 2036 | return patches; |
| 2037 | } |
| 2038 | QStringList text = textline.split("\n", QString::SkipEmptyParts); |
| 2039 | Patch patch; |
| 2040 | QRegExp patchHeader("^@@ -(\\d+),?(\\d*) \\+(\\d+),?(\\d*) @@$"); |
| 2041 | char sign; |
| 2042 | QString line; |
| 2043 | while (!text.isEmpty()) { |
| 2044 | if (!patchHeader.exactMatch(text.front())) { |
| 2045 | throw QString("Invalid patch string: %1").arg(text.front()); |
| 2046 | } |
| 2047 | |
| 2048 | patch = Patch(); |
| 2049 | patch.start1 = patchHeader.cap(1).toInt(); |
| 2050 | if (patchHeader.cap(2).isEmpty()) { |
| 2051 | patch.start1--; |
| 2052 | patch.length1 = 1; |
| 2053 | } else if (patchHeader.cap(2) == "0") { |
| 2054 | patch.length1 = 0; |
| 2055 | } else { |
| 2056 | patch.start1--; |
| 2057 | patch.length1 = patchHeader.cap(2).toInt(); |
| 2058 | } |
| 2059 | |
| 2060 | patch.start2 = patchHeader.cap(3).toInt(); |
| 2061 | if (patchHeader.cap(4).isEmpty()) { |
| 2062 | patch.start2--; |
| 2063 | patch.length2 = 1; |
| 2064 | } else if (patchHeader.cap(4) == "0") { |
| 2065 | patch.length2 = 0; |
| 2066 | } else { |
| 2067 | patch.start2--; |
| 2068 | patch.length2 = patchHeader.cap(4).toInt(); |
| 2069 | } |
| 2070 | text.removeFirst(); |
| 2071 | |
| 2072 | while (!text.isEmpty()) { |
| 2073 | if (text.front().isEmpty()) { |
| 2074 | text.removeFirst(); |
| 2075 | continue; |
| 2076 | } |
| 2077 | sign = text.front()[0].toLatin1(); |
| 2078 | line = safeMid(text.front(), 1); |
| 2079 | line = line.replace("+", "%2B"); // decode would change all "+" to " " |
| 2080 | line = QUrl::fromPercentEncoding(qPrintable(line)); |
| 2081 | if (sign == '-') { |
| 2082 | // Deletion. |
| 2083 | patch.diffs.append(Diff(DELETE, line)); |
| 2084 | } else if (sign == '+') { |
| 2085 | // Insertion. |
| 2086 | patch.diffs.append(Diff(INSERT, line)); |
| 2087 | } else if (sign == ' ') { |
| 2088 | // Minor equality. |
| 2089 | patch.diffs.append(Diff(EQUAL, line)); |
| 2090 | } else if (sign == '@') { |