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#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/mman.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <limits.h>
#include <errno.h>
#include <search.h>
#include "blaze822.h"
#include "blaze822_priv.h"
char *
blaze822_seq_open(char *file)
{
int fd;
struct stat st;
// env $SEQ or something
if (!file)
file = "map";
fd = open(file, O_RDONLY);
if (!fd)
return 0;
fstat(fd, &st);
char *map = mmap(0, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
close(fd);
if (map == MAP_FAILED)
return 0;
return map;
}
static void *msgnums;
struct msgnum {
char *file;
long pos;
};
int
msgnumorder(const void *a, const void *b)
{
struct msgnum *ia = (struct msgnum *)a;
struct msgnum *ib = (struct msgnum *)b;
return strcmp(ia->file, ib->file);
}
long
blaze822_seq_find(char *file)
{
struct msgnum key, **result;
key.file = file;
if (!(result = tfind(&key, &msgnums, msgnumorder)))
return 0;
return (*result)->pos;
}
int
blaze822_seq_load(char *map)
{
char *s, *t;
long line;
for (s = map, line = 0; s; s = t+1) {
t = strchr(s, '\n');
if (!t)
break;
line++;
while (*s && iswsp(*s))
s++;
char *e = t;
while (s < e && isfws(*(e-1)))
e--;
// printf("{%.*s}\n", e-s, s);
char *f = strndup(s, e-s);
if (!f)
return -1;
struct msgnum key, **result;
key.file = f;
if (!(result = tfind(&key, &msgnums, msgnumorder))) {
struct msgnum *c = malloc(sizeof (struct msgnum));
c->file = f;
c->pos = line;
tsearch(c, &msgnums, msgnumorder);
}
}
return 0;
}
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