cscg24-guacamole

CSCG 2024 Challenge 'Guacamole Mashup'
git clone https://git.sinitax.com/sinitax/cscg24-guacamole
Log | Files | Refs | sfeed.txt

xparsecolor.c (2364B)

      1/*
      2 * Licensed to the Apache Software Foundation (ASF) under one
      3 * or more contributor license agreements.  See the NOTICE file
      4 * distributed with this work for additional information
      5 * regarding copyright ownership.  The ASF licenses this file
      6 * to you under the Apache License, Version 2.0 (the
      7 * "License"); you may not use this file except in compliance
      8 * with the License.  You may obtain a copy of the License at
      9 *
     10 *   http://www.apache.org/licenses/LICENSE-2.0
     11 *
     12 * Unless required by applicable law or agreed to in writing,
     13 * software distributed under the License is distributed on an
     14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     15 * KIND, either express or implied.  See the License for the
     16 * specific language governing permissions and limitations
     17 * under the License.
     18 */
     19
     20
     21#include "terminal/named-colors.h"
     22#include "terminal/palette.h"
     23
     24#include <stdio.h>
     25
     26int guac_terminal_xparsecolor(const char* spec,
     27        guac_terminal_color* color) {
     28
     29    int red;
     30    int green;
     31    int blue;
     32
     33    /* 12-bit RGB ("rgb:h/h/h"), zero-padded to 24-bit */
     34    if (sscanf(spec, "rgb:%1x/%1x/%1x", &red, &green, &blue) == 3) {
     35        color->palette_index = -1; /* Not from palette. */
     36        color->red   = red   << 4;
     37        color->green = green << 4;
     38        color->blue  = blue  << 4;
     39        return 0;
     40    }
     41
     42    /* 24-bit RGB ("rgb:hh/hh/hh") */
     43    if (sscanf(spec, "rgb:%2x/%2x/%2x", &red, &green, &blue) == 3) {
     44        color->palette_index = -1; /* Not from palette. */
     45        color->red   = red;
     46        color->green = green;
     47        color->blue  = blue;
     48        return 0;
     49    }
     50
     51    /* 36-bit RGB ("rgb:hhh/hhh/hhh"), truncated to 24-bit */
     52    if (sscanf(spec, "rgb:%3x/%3x/%3x", &red, &green, &blue) == 3) {
     53        color->palette_index = -1; /* Not from palette. */
     54        color->red   = red   >> 4;
     55        color->green = green >> 4;
     56        color->blue  = blue  >> 4;
     57        return 0;
     58    }
     59
     60    /* 48-bit RGB ("rgb:hhhh/hhhh/hhhh"), truncated to 24-bit */
     61    if (sscanf(spec, "rgb:%4x/%4x/%4x", &red, &green, &blue) == 3) {
     62        color->palette_index = -1; /* Not from palette. */
     63        color->red   = red   >> 8;
     64        color->green = green >> 8;
     65        color->blue  = blue  >> 8;
     66        return 0;
     67    }
     68
     69    /* If not RGB, search for color by name */
     70    return guac_terminal_find_color(spec, color);
     71
     72}
     73