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author | Gard Spreemann <gspreemann@gmail.com> | 2019-01-08 23:28:14 +0100 |
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committer | Gard Spreemann <gspreemann@gmail.com> | 2019-01-08 23:28:14 +0100 |
commit | d1728e33e48d258d72058082a22b0406f48c9e9e (patch) | |
tree | ea3c3bdfd2255c7f00296d65c5a0ee0f4b2620fb /src/data/delimitedstringvalidator.cpp | |
parent | 4c6f7799004b4d10641dfe659a9a7b9af0653513 (diff) | |
parent | 7807d9c60d2574fb58069eb3faf65cd478905ff7 (diff) |
Merge tag 'v2.1' into debian/sid
Diffstat (limited to 'src/data/delimitedstringvalidator.cpp')
-rw-r--r-- | src/data/delimitedstringvalidator.cpp | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/data/delimitedstringvalidator.cpp b/src/data/delimitedstringvalidator.cpp new file mode 100644 index 0000000..9f1057e --- /dev/null +++ b/src/data/delimitedstringvalidator.cpp @@ -0,0 +1,58 @@ +/* + TikZiT - a GUI diagram editor for TikZ + Copyright (C) 2018 Aleks Kissinger + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <https://www.gnu.org/licenses/>. +*/ + +#include "delimitedstringvalidator.h" + +DelimitedStringValidator::DelimitedStringValidator(QObject *parent) : QValidator(parent) +{ +} + +QValidator::State DelimitedStringValidator::validate(QString &input, int &/*pos*/) const +{ + int depth = braceDepth(input); + if (depth == 0) return Acceptable; + else if (depth > 0) return Intermediate; + else return Invalid; +} + +void DelimitedStringValidator::fixup(QString &input) const +{ + int depth = braceDepth(input); + if (depth > 0) input.append(QString("}").repeated(depth)); +} + +int DelimitedStringValidator::braceDepth(QString input) const +{ + int depth = 0; + bool escape = false; + for (int i = 0; i < input.length(); ++i) { + QCharRef c = input[i]; + if (escape) { + escape = false; + } else if (c == '\\') { + escape = true; + } else if (c == '{') { + depth++; + } else if (c == '}') { + depth--; + if (depth < 0) return -1; + } + } + + return depth; +} |