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2061c5d692
We used a small buffer to preprocess a text to insert in text area (add indentation, remove empty code points, compute the next cursor location), but the size of this buffer was sometimes too small and caused a crash. Now we do all the text odification in place in the text area buffer.
33 lines
1.0 KiB
C++
33 lines
1.0 KiB
C++
#include <escher/text_input_helpers.h>
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#include <ion/unicode/utf8_decoder.h>
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#include <string.h>
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namespace TextInputHelpers {
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const char * CursorPositionInCommand(const char * text, const char * stoppingPosition) {
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assert(stoppingPosition == nullptr || text <= stoppingPosition);
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UTF8Decoder decoder(text);
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const char * currentPointer = text;
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CodePoint codePoint = decoder.nextCodePoint();
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while ((stoppingPosition == nullptr || currentPointer < stoppingPosition) && codePoint != UCodePointNull) {
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if (codePoint == UCodePointEmpty) {
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return currentPointer;
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}
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//TODO make sure changing empty / ' order was OK
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if (codePoint == '\'') {
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currentPointer = decoder.stringPosition();
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codePoint = decoder.nextCodePoint();
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if (codePoint == '\'') {
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return currentPointer;
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}
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// Continue because we already incremented codePoint
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continue;
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}
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currentPointer = decoder.stringPosition();
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codePoint = decoder.nextCodePoint();
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}
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return currentPointer;
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}
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}
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