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Lua replace fscanf

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Rocklua was using the full fscanf implementation
to simply read %ld for the file:read("*n") function
wasting 1k on unneeded/unused functionality

Instead, I've implemented a filetol function to duplicate it
without the extra overhead using strtol which as an added bonus
ERANGE errors now resolve to LONG_MIN and LONGMAX instead of
integer overflow

filetol()
   reads long int from an open file, skips preceding
   whitespaces returns -1 if error, 1 on success.
   *num set to LONG_MAX or LONG_MIN on overflow.
   If number of digits is > than LUAI_MAXNUMBER2STR
   filepointer will continue till the next non digit
   but buffer will stop being filled with characters.
   Preceding zero is ignored.

Change-Id: Ia42d0f73c63a894625bca4581e9b7e1cc7387fd2
This commit is contained in:
William Wilgus 2018-10-29 02:54:35 -04:00
parent cc0a4c632a
commit eab73b3dee
6 changed files with 66 additions and 295 deletions
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apps/plugins/lua/SOURCES
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@ -30,7 +30,6 @@ rockaux.c
rocklib.c
rocklib_img.c
tlsf_helper.c
fscanf.c
strftime.c
strpbrk.c
strtoul.c