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path: root/src/libsystemd-terminal/term-parser.c
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2014-10-03terminal: make utf8 decoder return lengthDavid Herrmann
Lets return the parsed length in term_utf8_decode() instead of a buffer pointer. Store the pointer in the passed argument. This makes it adhere to the systemd coding-style, were we always avoid returning pointers, but store them in output arguments. In this case, the storage is not allocated, so it doesn't fit 100% to this idiom, but still looks much nicer.
2014-07-18terminal: silence warningThomas Hindoe Paaboel Andersen
2014-07-18terminal: add parser state-machineDavid Herrmann
The term-parser is used to parse any input from TTY-clients. It reads CSI, DCS, OSC and ST control sequences and normal escape sequences. It doesn't do anything with the parsed data besides detecting the sequence and returning it. The caller has to react to them. The parser also comes with its own UTF-8 helpers. The reason for that is that we don't want to assert() or hard-fail on parsing errors. Instead, we treat any invalid UTF-8 sequences as ISO-8859-1. This allows pasting invalid data into a terminal (which cannot be controlled through the TTY, anyway) and we still deal with it in a proper manner. This is _required_ for 8-bit and 7-bit DEC modes (including the g0-g3 mappings), so it's not just an ugly fallback because we can (it's still horribly ugly but at least we have an excuse).