mirror of https://github.com/pygos/cron
78 lines
1.1 KiB
C
78 lines
1.1 KiB
C
/* SPDX-License-Identifier: ISC */
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#include "gcrond.h"
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int rdline(rdline_t *t)
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{
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size_t i, len;
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do {
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free(t->line);
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t->line = NULL;
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errno = 0;
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len = 0;
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if (getline(&t->line, &len, t->fp) < 0) {
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if (errno) {
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rdline_complain(t, strerror(errno));
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return -1;
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}
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return 1;
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}
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t->lineno += 1;
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for (i = 0; isspace(t->line[i]); ++i)
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;
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if (t->line[i] == '\0' || t->line[i] == '#') {
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t->line[0] = '\0';
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} else if (i) {
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memmove(t->line, t->line + i, len - i + 1);
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}
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} while (t->line[0] == '\0');
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return 0;
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}
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void rdline_complain(rdline_t *t, const char *msg, ...)
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{
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va_list ap;
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fprintf(stderr, "%s: %zu: ", t->filename, t->lineno);
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va_start(ap, msg);
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vfprintf(stderr, msg, ap);
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va_end(ap);
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fputc('\n', stderr);
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}
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int rdline_init(rdline_t *t, int dirfd, const char *filename)
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{
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int fd;
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memset(t, 0, sizeof(*t));
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fd = openat(dirfd, filename, O_RDONLY);
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if (fd == -1) {
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perror(filename);
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return -1;
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}
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t->fp = fdopen(fd, "r");
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if (t->fp == NULL) {
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perror("fdopen");
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close(fd);
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return -1;
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}
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t->filename = filename;
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return 0;
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}
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void rdline_cleanup(rdline_t *t)
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{
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free(t->line);
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fclose(t->fp);
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}
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