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New function index_first().

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default 2022-11-26 17:35:18 +01:00
parent d03b988c99
commit 4f261ec7b9
2 changed files with 20 additions and 0 deletions
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19
data.c
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@ -306,6 +306,25 @@ int index_in(const char *fn, const char *id)
}
int index_first(const char *fn, char *line, int size)
/* reads the first entry of an index */
{
FILE *f;
int ret = 0;
if ((f = fopen(fn, "r")) != NULL) {
if (fgets(line, size, f) != NULL) {
line[32] = '\0';
ret = 1;
}
fclose(f);
}
return ret;
}
d_char *index_list(const char *fn, int max)
/* returns an index as a list */
{

1
snac.h
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@ -55,6 +55,7 @@ double mtime_nl(const char *fn, int *n_link);
int index_add(const char *fn, const char *md5);
int index_del(const char *fn, const char *md5);
int index_first(const char *fn, char *buf, int size);
d_char *index_list(const char *fn, int max);
d_char *index_list_desc(const char *fn, int max);