73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
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/*
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* Copyright (C) 2016 Glyptodon, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "config.h"
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#include <errno.h>
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#include <limits.h>
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#include <string.h>
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#include <stdlib.h>
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int guacenc_parse_int(char* arg, int* i) {
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char* end;
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/* Parse string as an integer */
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errno = 0;
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long int value = strtol(arg, &end, 10);
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/* Ignore number if invalid / non-positive */
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if (errno != 0 || value <= 0 || value > INT_MAX || *end != '\0')
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return 1;
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/* Store value */
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*i = value;
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/* Parsing successful */
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return 0;
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}
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int guacenc_parse_dimensions(char* arg, int* width, int* height) {
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/* Locate the 'x' within the dimensions string */
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char* x = strchr(arg, 'x');
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if (x == NULL)
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return 1;
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/* Replace 'x' with a null terminator */
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*x = '\0';
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/* Parse width and height */
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int w, h;
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if (guacenc_parse_int(arg, &w) || guacenc_parse_int(x+1, &h))
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return 1;
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/* Width and height are both valid */
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*width = w;
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*height = h;
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return 0;
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}
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