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67 lines
1.8 KiB
67 lines
1.8 KiB
6 years ago
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/*
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* click.c - read and parse of a click
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* Copyright (C) 2014 Vivien Didelot
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "click.h"
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#include "json.h"
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#include "log.h"
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/*
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* Parse a click, previous read from stdin.
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*
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* A click looks like this ("name" and "instance" can be absent):
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*
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* ',{"name":"foo","instance":"bar","button":1,"x":1186,"y":13}\n'
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*
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* Note that this function is non-idempotent. We need to parse from right to
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* left. It's ok since the JSON layout is known and fixed.
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*/
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void
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click_parse(char *json, struct click *click)
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{
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int nst, nlen;
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int ist, ilen;
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int bst, blen;
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int xst, xlen;
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int yst, ylen;
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json_parse(json, "y", &yst, &ylen);
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json_parse(json, "x", &xst, &xlen);
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json_parse(json, "button", &bst, &blen);
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json_parse(json, "instance", &ist, &ilen);
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json_parse(json, "name", &nst, &nlen);
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click->name = json + nst;
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*(click->name + nlen) = '\0';
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click->instance = json + ist;
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*(click->instance + ilen) = '\0';
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click->button = json + bst;
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*(click->button + blen) = '\0';
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click->y = json + yst;
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*(click->y + ylen) = '\0';
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click->x = json + xst;
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*(click->x + xlen) = '\0';
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debug("parsed click: name=%s instance=%s button=%s x=%s y=%s",
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click->name, click->instance,
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click->button, click->x, click->y);
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}
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