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More listfile functions.

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default 2022-11-23 19:32:26 +01:00
parent 0ff3b32e71
commit 7f458f4fd6
1 changed files with 62 additions and 4 deletions
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66
data.c
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@ -295,7 +295,7 @@ int object_del(const char *id)
} }
int list_add_md5(const char *fn, const char *md5) int listfile_add_md5(const char *fn, const char *md5)
/* adds an md5 to a list */ /* adds an md5 to a list */
{ {
int status = 200; int status = 200;
@ -314,7 +314,7 @@ int list_add_md5(const char *fn, const char *md5)
} }
int list_del_md5(const char *fn, const char *md5) int listfile_del_md5(const char *fn, const char *md5)
/* deletes an md5 from a list */ /* deletes an md5 from a list */
{ {
int status = 404; int status = 404;
@ -324,10 +324,9 @@ int list_del_md5(const char *fn, const char *md5)
flock(fileno(i), LOCK_EX); flock(fileno(i), LOCK_EX);
xs *nfn = xs_fmt("%s.new", fn); xs *nfn = xs_fmt("%s.new", fn);
char line[32 + 1];
if ((o = fopen(nfn, "w")) != NULL) { if ((o = fopen(nfn, "w")) != NULL) {
char line[32 + 1];
while (fgets(line, sizeof(line), i) != NULL) { while (fgets(line, sizeof(line), i) != NULL) {
if (memcmp(line, md5, 32) != 0) if (memcmp(line, md5, 32) != 0)
fwrite(line, sizeof(line), 1, o); fwrite(line, sizeof(line), 1, o);
@ -352,6 +351,65 @@ int list_del_md5(const char *fn, const char *md5)
} }
d_char *listfile_get_n(const char *fn, int max)
/* returns a list */
{
xs *list = NULL;
FILE *f;
int n = 0;
if ((f = fopen(fn, "r")) != NULL) {
flock(fileno(f), LOCK_SH);
char line[32 + 1];
list = xs_list_new();
while (n < max && fgets(line, sizeof(line), f) != NULL) {
line[32] = '\0';
list = xs_list_append(list, line);
n++;
}
fclose(f);
}
return list;
}
d_char *listfile_get_inv_n(const char *fn, int max)
/* returns a list, inversely */
{
xs *list = NULL;
FILE *f;
int n = 0;
if ((f = fopen(fn, "r")) != NULL) {
flock(fileno(f), LOCK_SH);
char line[32 + 1];
list = xs_list_new();
/* move to the end minus one entry */
if (!fseek(f, 0, SEEK_END) && !fseek(f, -sizeof(line), SEEK_SET)) {
while (n < max && fgets(line, sizeof(line), f) != NULL) {
line[32] = '\0';
list = xs_list_append(list, line);
n++;
/* move backwards 2 entries */
if (fseek(f, -sizeof(line) * 2, SEEK_SET) == -1)
break;
}
}
fclose(f);
}
return list;
}
d_char *_follower_fn(snac *snac, char *actor) d_char *_follower_fn(snac *snac, char *actor)
{ {
xs *md5 = xs_md5_hex(actor, strlen(actor)); xs *md5 = xs_md5_hex(actor, strlen(actor));