parse_config: use getline. BIG speedup with glibc (~40%).

function                                             old     new   delta
config_read                                          559     604     +45
getline                                                -      23     +23
config_close                                          29      49     +20
find_pair                                            169     187     +18
showmode                                             330     338      +8
hash_find                                            233     234      +1
builtin_umask                                        133     132      -1
lzo1x_optimize                                      1434    1429      -5
test_main                                            253     247      -6
buffer_fill_and_print                                196     179     -17
create_J                                            1849    1826     -23
config_free_data                                      37       -     -37
------------------------------------------------------------------------------
(add/remove: 3/1 grow/shrink: 5/5 up/down: 138/-89)            Total: 26 bytes

Signed-off-by: Timo Teras <timo.teras@iki.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/libbb.h b/include/libbb.h
index 2cac7e60c..953bec334 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -1184,8 +1184,9 @@ enum {
 };
 typedef struct parser_t {
         FILE *fp;
-        char *line;
         char *data;
+        char *line, *nline;
+        size_t line_alloc, nline_alloc;
         int lineno;
 } parser_t;
 parser_t* config_open(const char *filename) FAST_FUNC;