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53 lines
1.1 KiB
53 lines
1.1 KiB
3 years ago
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#include <stdint.h>
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#include <string.h>
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#include <stdbool.h>
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#include <fcntl.h>
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#include <errno.h>
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#include "common_utils/utils.h"
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char *append(char *buf, const char *appended, size_t *pcap)
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{
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char c;
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char *buf0 = buf;
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size_t cap = *pcap;
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if (buf0 == NULL) return NULL;
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if (appended == NULL || appended[0] == 0) return buf0;
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while (cap > 1 && 0 != (c = *appended++)) {
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*buf++ = c;
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cap--;
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}
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if (cap == 0) {
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*buf0 = '\0';
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return NULL;
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}
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*pcap = cap;
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*buf = 0;
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return buf;
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}
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bool fd_is_valid(int fd)
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{
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return fcntl(fd, F_GETFD) != -1 || errno != EBADF;
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}
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int parse_boolean_arg(const char *str)
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{
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if (0 == strcasecmp(str, "on")) return 1;
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if (strstarts(str, "en")) return 1;
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if (strstarts(str, "y")) return 1;
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if (0 == strcmp(str, "1")) return 1;
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if (0 == strcasecmp(str, "a")) return 1;
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if (0 == strcasecmp(str, "off")) return 0;
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if (0 == strcmp(str, "0")) return 0;
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if (strstarts(str, "dis")) return 0;
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if (strstarts(str, "n")) return 0;
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return -1;
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}
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