50 lines
1.1 KiB
C
Executable File
50 lines
1.1 KiB
C
Executable File
#include "errors.h"
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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void error_buffer_init(struct error_buffer *eb) {
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eb->err = ERR_NO_ERR;
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eb->text_len = 0;
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eb->text[0] = 0;
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}
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void error_set(struct error_buffer *eb, enum error_code err) {
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eb->err = err;
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}
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enum error_code error_get(const struct error_buffer *eb) {
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return eb->err;
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}
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void error_printf(struct error_buffer *eb, const char *format, ...) {
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va_list args;
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/* volné místo v zásobníku */
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int space = MAX_ERROR_MESSAGE_LENGTH - eb->text_len;
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int write_size;
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/* už není volné místo */
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if (space == 0)
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return;
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/* zápis */
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va_start(args, format);
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write_size = vsnprintf(eb->text + eb->text_len, MAX_ERROR_MESSAGE_LENGTH - eb->text_len, format, args);
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va_end(args);
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/* chyba */
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if (write_size < 0)
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return;
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/* aktualizace délky */
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if (write_size < space) {
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eb->text_len += write_size;
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}
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else {
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eb->text_len = MAX_ERROR_MESSAGE_LENGTH;
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}
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}
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const char *error_get_text(const struct error_buffer *eb) {
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return eb->text;
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} |