66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
#ifndef STRANS_IPC_H
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#define STRANS_IPC_H
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#include <stddef.h>
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#define IPCPATH "/tmp/strans.%d"
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/*
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* Request: [flags, modifiers, key byte 0, ..., key byte 3].
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* Flags request preedit and distinguish lifecycle reset from physical Escape.
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* The server assigns the connection's owner generation; it is not sent on
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* the wire.
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* Only Mmask modifier bits are retained.
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* Response: [eaten, commit-length-low, commit-length-high, commit...],
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* followed, when requested, by
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* [preedit-length-low, preedit-length-high, preedit...].
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* Lengths are little-endian byte counts; fields are at most Ipcfieldmax bytes.
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*/
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enum
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{
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Ipcreqwant = 1<<0,
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Ipcreqreset = 1<<1,
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Kspec = 0x110000,
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Kback = Kspec|0x08,
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Ktab = Kspec|0x09,
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Kret = Kspec|0x0d,
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Kesc = Kspec|0x1b,
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Kup = Kspec|0x52,
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Kdown = Kspec|0x54,
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Kmodfirst = Kspec|0xe1,
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Kmodlast = Kspec|0xee,
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Mshift = 1<<0,
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Mctrl = 1<<2,
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Malt = 1<<3,
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Msuper = 1<<6,
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Mmask = Mshift|Mctrl|Malt|Msuper,
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Ipcreqsz = 6,
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Ipclensz = 2,
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Ipcresphdrsz = 1 + Ipclensz,
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Ipcfieldmax = 256,
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Ipcmaxresp = Ipcresphdrsz + Ipcfieldmax + Ipclensz + Ipcfieldmax,
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};
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typedef struct Ipcresp Ipcresp;
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struct Ipcresp
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{
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int eaten;
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size_t ncommit;
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size_t npreedit;
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};
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void ipcpackreq(unsigned char[Ipcreqsz], int, unsigned int, unsigned int);
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void ipcpackreset(unsigned char[Ipcreqsz], int);
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void ipcunpackreq(const unsigned char[Ipcreqsz], int*, unsigned int*, unsigned int*);
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int ipcreqreset(const unsigned char[Ipcreqsz]);
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int ipcpackresp(unsigned char*, size_t, int, const char*, size_t, const char*, size_t, int);
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int ipcreadn(int, void*, size_t);
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int ipcsend(int, const void*, size_t);
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int ipcreadresp(int, int, char*, size_t, char*, size_t, Ipcresp*);
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#endif
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