75 lines
1.3 KiB
C
75 lines
1.3 KiB
C
#include <libcbd.h>
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#include <cbdutil.h>
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uint verbose_level;
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void __attribute__((noreturn))
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error(const char* fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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exit(EXIT_FAILURE);
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}
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int
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verbose(uint level, const char* fmt, ...)
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{
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int ret = 0;
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va_list ap;
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if (verbose_level >= level) {
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va_start(ap, fmt);
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vprintf(fmt, ap);
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}
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return ret;
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}
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bool
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ask_user_bool(tristate_t auto_response, const char* fmt, ...)
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{
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va_list ap;
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char prompt[256];
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char* line;
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size_t len;
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int ret;
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bool answer;
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va_start(ap, fmt);
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vsnprintf(prompt, sizeof(prompt), fmt, ap);
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va_end(ap);
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again:
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printf("%s [y/n]? ", prompt);
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if (auto_response != t_none) {
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answer = (auto_response == t_true);
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printf("%s\n", (answer ? "y" : "n"));
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return answer;
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}
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line = NULL;
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len = 0;
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getline(&line, &len, stdin);
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if (ret > 0) {
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switch (line[0]) {
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case 'y':
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case 'Y':
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answer = true;
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break;
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case 'n':
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case 'N':
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answer = false;
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break;
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default:
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ret = -1;
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}
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}
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free(line);
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if (ret <= 0) {
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goto again;
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}
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return answer;
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}
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