timer23
/
efl
forked from enlightenment/efl
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

efreet: make mime type evaluation way faster by using mmap.

This commit is contained in:
Cedric BAIL 2016-11-14 15:16:32 -08:00
parent 8368f6e1d2
commit 6da2fbc9c4
1 changed files with 24 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

64
src/lib/efreet/efreet_mime.c
View File

@ -1128,34 +1128,23 @@ efreet_mime_magic_check_priority(const char *file,
Efreet_Mime_Magic *m = NULL;
Efreet_Mime_Magic_Entry *e = NULL;
Eina_List *l, *ll;
FILE *f = NULL;
unsigned int i = 0, offset = 0,level = 0, match = 0, bytes_read = 0;
Eina_File *f = NULL;
const char *mem = NULL;
size_t sz;
unsigned int i = 0, offset = 0,level = 0, match = 0;
const char *last_mime = NULL;
int c;
char v, buf[EFREET_MIME_MAGIC_BUFFER_SIZE];
struct stat s;
char v;
#ifdef _WIN32
if (stat(file, &s) || s.st_size == 0)
#else
if (lstat(file, &s) || s.st_size == 0)
#endif
return NULL;
if (!magics) return NULL;
f = fopen(file, "rb");
f = eina_file_open(file, EINA_FALSE);
if (!f) return NULL;
if (!magics)
{
fclose(f);
return NULL;
}
mem = eina_file_map_all(f, EINA_FILE_RANDOM);
if (!mem) goto end;
if ((bytes_read = fread(buf, 1, sizeof(buf), f)) == 0)
{
fclose(f);
return NULL;
}
sz = eina_file_size_get(f);
EINA_LIST_FOREACH(magics, l, m)
{
@ -1171,30 +1160,25 @@ efreet_mime_magic_check_priority(const char *file,
continue;
if ((level >= e->indent) && !match)
level = e->indent;
{
level = e->indent;
}
else if ((level > e->indent) && match)
{
fclose(f);
return last_mime;
goto end;
}
for (offset = e->offset; offset < e->offset + e->range_len; offset++)
{
if (((offset + e->value_len) > bytes_read) &&
(fseek(f, offset, SEEK_SET) == -1))
break;
if (offset + e->value_len >= sz) break;
match = 1;
for (i = 0; i < e->value_len; ++i)
{
if (offset + e->value_len > bytes_read)
c = fgetc(f);
else
c = buf[offset + i];
c = mem[offset + i];
v = e->value[i];
if (e->mask) v &= e->mask[i];
if (e->mask) c &= e->mask[i];
if (!(c == v))
{
@ -1212,15 +1196,15 @@ efreet_mime_magic_check_priority(const char *file,
}
}
if (match)
{
fclose(f);
return last_mime;
}
if (match) break;
}
fclose(f);
return NULL;
end:
if (mem) eina_file_map_free(f, (void*) mem);
eina_file_close(f);
return last_mime;
}
/**