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Commit 11b1979b authored by unknown's avatar unknown
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New functionality to my_getopt. myisamchk now uses my_getopt 

only.


include/my_getopt.h:
  Added u_max_value as for user definable maximum value for
  a variable in my_getopt.
myisam/myisamchk.c:
  myisamchk now uses my_getopt struct for variables also.
  Variables can be set with -O var=val, --set-variable=var=val and
  --variable=val now.
mysys/getvar.c:
  my_set_changeable_var moved to my_getopt.c
mysys/my_getopt.c:
  Added special prefix --maximum[-variable-name=...] for user
  definable maximum values for variables, among other things.
parent dd76a460
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Showing with 246 additions and 239 deletions
include/my_getopt.h
View file @ 11b1979b
......@@ -23,14 +23,15 @@ struct my_optarg
};
enum get_opt_var_type { GET_NO_ARG, GET_INT, GET_LL, GET_STR };
enum get_opt_var_type { GET_NO_ARG, GET_LONG, GET_LL, GET_STR };
enum get_opt_arg_type { NO_ARG, OPT_ARG, REQUIRED_ARG };
struct my_option
{
const char *name; /* Name of the option */
const char *comment; /* option comment, for autom. --help */
char *value; /* The variable value */
gptr *value; /* The variable value */
gptr *u_max_value; /* The user def. max variable value */
const char **str_values; /* Pointer to possible values */
enum get_opt_var_type var_type;
enum get_opt_arg_type arg_type;
......@@ -41,6 +42,6 @@ struct my_option
longlong sub_size; /* Subtract this from given value */
long block_size; /* Value should be a mult. of this */
int app_type; /* To be used by an application */
my_bool changeable_var; /* If true, the option is a variable */
my_bool opt_is_var; /* If true, the option is a variable */
};
myisam/myisamchk.c
View file @ 11b1979b
......@@ -142,31 +142,6 @@ int main(int argc, char **argv)
#endif
} /* main */
static CHANGEABLE_VAR changeable_vars[] = {
{ "key_buffer_size",(long*) &check_param.use_buffers,(long) USE_BUFFER_INIT,
(long) MALLOC_OVERHEAD, (long) ~0L,(long) MALLOC_OVERHEAD,(long) IO_SIZE },
{ "myisam_block_size", (long*) &opt_myisam_block_size,
MI_KEY_BLOCK_LENGTH, MI_MIN_KEY_BLOCK_LENGTH, MI_MAX_KEY_BLOCK_LENGTH,
0, MI_MIN_KEY_BLOCK_LENGTH },
{ "read_buffer_size", (long*) &check_param.read_buffer_length,(long) READ_BUFFER_INIT,
(long) MALLOC_OVERHEAD,(long) ~0L,(long) MALLOC_OVERHEAD,(long) 1L },
{ "write_buffer_size", (long*) &check_param.write_buffer_length,(long) READ_BUFFER_INIT,
(long) MALLOC_OVERHEAD,(long) ~0L,(long) MALLOC_OVERHEAD,(long) 1L },
{ "sort_buffer_size",(long*) &check_param.sort_buffer_length,(long) SORT_BUFFER_INIT,
(long) (MIN_SORT_BUFFER+MALLOC_OVERHEAD),(long) ~0L,
(long) MALLOC_OVERHEAD,(long) 1L },
{ "sort_key_blocks",(long*) &check_param.sort_key_blocks,BUFFERS_WHEN_SORTING,4L,100L,0L,
1L },
{ "decode_bits",(long*) &decode_bits,9L,4L,17L,0L,1L },
{ "ft_min_word_len", (long*) &ft_min_word_len,
4, 1, HA_FT_MAXLEN, 0, 1 },
{ "ft_max_word_len", (long*) &ft_max_word_len,
HA_FT_MAXLEN, 10, HA_FT_MAXLEN, 0, 1 },
{ "ft_max_word_len_for_sort",(long*) &ft_max_word_len_for_sort,
20, 4, HA_FT_MAXLEN, 0, 1 },
{ NullS,(long*) 0,0L,0L,0L,0L,0L,} };
enum options {
OPT_CHARSETS_DIR=256, OPT_SET_CHARSET,OPT_START_CHECK_POS,
OPT_CORRECT_CHECKSUM, OPT_KEY_BUFFER_SIZE, OPT_MYISAM_BLOCK_SIZE,
......@@ -177,63 +152,63 @@ enum options {
static struct my_option my_long_options[] =
{
{"analyze", "", 0, 0, GET_NO_ARG, NO_ARG, 'a', 0, 0, 0, 0, 0, 0, 0},
{"block-search", "", 0, 0, GET_LL, REQUIRED_ARG, 'b', 0, 0, 0, 0, 0, 0, 0},
{"backup", "", 0, 0, GET_NO_ARG, NO_ARG, 'B', 0, 0, 0, 0, 0, 0, 0},
{"character-sets-dir", "", 0, 0, GET_STR, REQUIRED_ARG, OPT_CHARSETS_DIR, 0, 0, 0, 0, 0, 0, 0},
{"analyze", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'a', 0, 0, 0, 0, 0, 0, 0},
{"block-search", "", 0, 0, 0, GET_LONG, REQUIRED_ARG, 'b', 0, 0, 0, 0, 0, 0, 0},
{"backup", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'B', 0, 0, 0, 0, 0, 0, 0},
{"character-sets-dir", "", 0, 0, 0, GET_STR, REQUIRED_ARG, OPT_CHARSETS_DIR, 0, 0, 0, 0, 0, 0, 0},
{"check", "", 0, 0, GET_NO_ARG, NO_ARG, 'c', 0, 0, 0, 0, 0, 0, 0},
{"check-only-changed", "", 0, 0, GET_NO_ARG, NO_ARG, 'C', 0, 0, 0, 0, 0, 0, 0},
{"check", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'c', 0, 0, 0, 0, 0, 0, 0},
{"check-only-changed", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'C', 0, 0, 0, 0, 0, 0, 0},
{"correct-checksum", "", 0, 0, GET_NO_ARG, NO_ARG, OPT_CORRECT_CHECKSUM, 0, 0, 0, 0, 0, 0, 0},
{"correct-checksum", "", 0, 0, 0, GET_NO_ARG, NO_ARG, OPT_CORRECT_CHECKSUM, 0, 0, 0, 0, 0, 0, 0},
#ifndef DBUG_OFF
{"debug", "", 0, 0, GET_STR, OPT_ARG, '#', 0, 0, 0, 0, 0, 0, 0},
{"debug", "", 0, 0, 0, GET_STR, OPT_ARG, '#', 0, 0, 0, 0, 0, 0, 0},
#endif
{"description", "", 0, 0, GET_NO_ARG, NO_ARG, 'd', 0, 0, 0, 0, 0, 0, 0},
{"data-file-length", "", 0, 0, GET_LL, REQUIRED_ARG, 'D', 0, 0, 0, 0, 0, 0, 0},
{"extend-check", "", 0, 0, GET_NO_ARG, NO_ARG, 'e', 0, 0, 0, 0, 0, 0, 0},
{"fast", "", 0, 0, GET_NO_ARG, NO_ARG, 'F', 0, 0, 0, 0, 0, 0, 0},
{"force", "", 0, 0, GET_NO_ARG, NO_ARG, 'f', 0, 0, 0, 0, 0, 0, 0},
{"help", "", 0, 0, GET_NO_ARG, NO_ARG, '?', 0, 0, 0, 0, 0, 0, 0},
{"information", "", 0, 0, GET_NO_ARG, NO_ARG, 'i', 0, 0, 0, 0, 0, 0, 0},
{"keys-used", "", 0, 0, GET_LL, REQUIRED_ARG, 'k', 0, 0, 0, 0, 0, 0, 0},
{"medium-check", "", 0, 0, GET_NO_ARG, NO_ARG, 'm', 0, 0, 0, 0, 0, 0, 0},
{"quick", "", 0, 0, GET_NO_ARG, NO_ARG, 'q', 0, 0, 0, 0, 0, 0, 0},
{"read-only", "", 0, 0, GET_NO_ARG, NO_ARG, 'T', 0, 0, 0, 0, 0, 0, 0},
{"recover", "", 0, 0, GET_NO_ARG, NO_ARG, 'r', 0, 0, 0, 0, 0, 0, 0},
{"safe-recover", "", 0, 0, GET_NO_ARG, NO_ARG, 'o', 0, 0, 0, 0, 0, 0, 0},
{"start-check-pos", "", 0, 0, GET_LL, REQUIRED_ARG, OPT_START_CHECK_POS, 0, 0, 0, 0, 0, 0, 0},
{"set-auto-increment", "", 0, 0, GET_LL, OPT_ARG, 'A', 0, 0, 0, 0, 0, 0, 0},
{"set-character-set", "", 0, 0, GET_STR, REQUIRED_ARG, OPT_SET_CHARSET, 0, 0, 0, 0, 0, 0, 0},
{"set-variable", "", 0, 0, GET_STR, REQUIRED_ARG, 'O', 0, 0, 0, 0, 0, 0, 0},
{"silent", "", 0, 0, GET_NO_ARG, NO_ARG, 's', 0, 0, 0, 0, 0, 0, 0},
{"sort-index", "", 0, 0, GET_NO_ARG, NO_ARG, 'S', 0, 0, 0, 0, 0, 0, 0},
{"sort-records", "", 0, 0, GET_INT, REQUIRED_ARG, 'R', 0, 0, 0, 0, 0, 0, 0},
{"sort-recover", "", 0, 0, GET_NO_ARG, NO_ARG, 'n', 0, 0, 0, 0, 0, 0, 0},
{"tmpdir", "", 0, 0, GET_STR, REQUIRED_ARG, 't', 0, 0, 0, 0, 0, 0, 0},
{"update-state", "", 0, 0, GET_NO_ARG, NO_ARG, 'U', 0, 0, 0, 0, 0, 0, 0},
{"unpack", "", 0, 0, GET_NO_ARG, NO_ARG, 'u', 0, 0, 0, 0, 0, 0, 0},
{"verbose", "", 0, 0, GET_NO_ARG, NO_ARG, 'v', 0, 0, 0, 0, 0, 0, 0},
{"version", "", 0, 0, GET_NO_ARG, NO_ARG, 'V', 0, 0, 0, 0, 0, 0, 0},
{"wait", "", 0, 0, GET_NO_ARG, NO_ARG, 'w', 0, 0, 0, 0, 0, 0, 0},
{"description", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'd', 0, 0, 0, 0, 0, 0, 0},
{"data-file-length", "", 0, 0, 0, GET_LONG, REQUIRED_ARG, 'D', 0, 0, 0, 0, 0, 0, 0},
{"extend-check", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'e', 0, 0, 0, 0, 0, 0, 0},
{"fast", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'F', 0, 0, 0, 0, 0, 0, 0},
{"force", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'f', 0, 0, 0, 0, 0, 0, 0},
{"help", "", 0, 0, 0, GET_NO_ARG, NO_ARG, '?', 0, 0, 0, 0, 0, 0, 0},
{"information", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'i', 0, 0, 0, 0, 0, 0, 0},
{"keys-used", "", 0, 0, 0, GET_LONG, REQUIRED_ARG, 'k', 0, 0, 0, 0, 0, 0, 0},
{"medium-check", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'm', 0, 0, 0, 0, 0, 0, 0},
{"quick", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'q', 0, 0, 0, 0, 0, 0, 0},
{"read-only", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'T', 0, 0, 0, 0, 0, 0, 0},
{"recover", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'r', 0, 0, 0, 0, 0, 0, 0},
{"safe-recover", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'o', 0, 0, 0, 0, 0, 0, 0},
{"start-check-pos", "", 0, 0, 0, GET_LONG, REQUIRED_ARG, OPT_START_CHECK_POS, 0, 0, 0, 0, 0, 0, 0},
{"set-auto-increment", "", 0, 0, 0, GET_LONG, OPT_ARG, 'A', 0, 0, 0, 0, 0, 0, 0},
{"set-character-set", "", 0, 0, 0, GET_STR, REQUIRED_ARG, OPT_SET_CHARSET, 0, 0, 0, 0, 0, 0, 0},
{"set-variable", "", 0, 0, 0, GET_STR, REQUIRED_ARG, 'O', 0, 0, 0, 0, 0, 0, 0},
{"silent", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 's', 0, 0, 0, 0, 0, 0, 0},
{"sort-index", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'S', 0, 0, 0, 0, 0, 0, 0},
{"sort-records", "", 0, 0, 0, GET_LONG, REQUIRED_ARG, 'R', 0, 0, 0, 0, 0, 0, 0},
{"sort-recover", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'n', 0, 0, 0, 0, 0, 0, 0},
{"tmpdir", "", 0, 0, 0, GET_STR, REQUIRED_ARG, 't', 0, 0, 0, 0, 0, 0, 0},
{"update-state", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'U', 0, 0, 0, 0, 0, 0, 0},
{"unpack", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'u', 0, 0, 0, 0, 0, 0, 0},
{"verbose", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'v', 0, 0, 0, 0, 0, 0, 0},
{"version", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'V', 0, 0, 0, 0, 0, 0, 0},
{"wait", "", 0, 0, 0, GET_NO_ARG, NO_ARG, 'w', 0, 0, 0, 0, 0, 0, 0},
/* variables begin here */
{ "key_buffer_size", "", 0, 0, GET_LL, REQUIRED_ARG, OPT_KEY_BUFFER_SIZE, 0, 0, 0, 0, 0, 0, 1},
{ "myisam_block_size", "", 0, 0, GET_LL, REQUIRED_ARG, OPT_MYISAM_BLOCK_SIZE, 0, 0, 0, 0, 0, 0, 1},
{ "read_buffer_size", "", 0, 0, GET_LL, REQUIRED_ARG, OPT_READ_BUFFER_SIZE, 0, 0, 0, 0, 0, 0, 1},
{ "write_buffer_size", "", 0, 0, GET_LL, REQUIRED_ARG, OPT_WRITE_BUFFER_SIZE, 0, 0, 0, 0, 0, 0, 1},
{ "sort_buffer_size", "", 0, 0, GET_LL, REQUIRED_ARG, OPT_SORT_BUFFER_SIZE, 0, 0, 0, 0, 0, 0, 1},
{ "sort_key_blocks", "", 0, 0, GET_LL, REQUIRED_ARG, OPT_SORT_KEY_BLOCKS, 0, 0, 0, 0, 0, 0, 1},
{ "decode_bits", "", 0, 0, GET_LL, REQUIRED_ARG, OPT_DECODE_BITS, 0, 0, 0, 0, 0, 0, 1},
{ "ft_min_word_len", "", 0, 0, GET_LL, REQUIRED_ARG, OPT_FT_MIN_WORD_LEN, 0, 0, 0, 0, 0, 0, 1},
{ "ft_max_word_len", "", 0, 0, GET_LL, REQUIRED_ARG, OPT_FT_MAX_WORD_LEN, 0, 0, 0, 0, 0, 0, 1},
{ "ft_max_word_len_for_sort", "", 0, 0, GET_LL, REQUIRED_ARG, OPT_FT_MAX_WORD_LEN_FOR_SORT, 0, 0, 0, 0, 0, 0, 1},
{ "key_buffer_size", "", (gptr*) &check_param.use_buffers, (gptr*) &check_param.use_buffers, 0, GET_LONG, REQUIRED_ARG, OPT_KEY_BUFFER_SIZE, (long) USE_BUFFER_INIT, (long) MALLOC_OVERHEAD, (long) ~0L, (long) MALLOC_OVERHEAD, (long) IO_SIZE, 0, 1},
{ "myisam_block_size", "", (gptr*) &opt_myisam_block_size, (gptr*) &opt_myisam_block_size, 0, GET_LONG, REQUIRED_ARG, OPT_MYISAM_BLOCK_SIZE, MI_KEY_BLOCK_LENGTH, MI_MIN_KEY_BLOCK_LENGTH, MI_MAX_KEY_BLOCK_LENGTH, 0, MI_MIN_KEY_BLOCK_LENGTH, 0, 1},
{ "read_buffer_size", "", (gptr*) &check_param.read_buffer_length, (gptr*) &check_param.read_buffer_length, 0, GET_LONG, REQUIRED_ARG, OPT_READ_BUFFER_SIZE, (long) READ_BUFFER_INIT, (long) MALLOC_OVERHEAD, (long) ~0L, (long) MALLOC_OVERHEAD, (long) 1L, 0, 1},
{ "write_buffer_size", "", (gptr*) &check_param.write_buffer_length, (gptr*) &check_param.write_buffer_length, 0, GET_LONG, REQUIRED_ARG, OPT_WRITE_BUFFER_SIZE, (long) READ_BUFFER_INIT, (long) MALLOC_OVERHEAD, (long) ~0L, (long) MALLOC_OVERHEAD, (long) 1L, 0, 1},
{ "sort_buffer_size", "", (gptr*) &check_param.sort_buffer_length, (gptr*) &check_param.sort_buffer_length, 0, GET_LONG, REQUIRED_ARG, OPT_SORT_BUFFER_SIZE, (long) SORT_BUFFER_INIT, (long) (MIN_SORT_BUFFER + MALLOC_OVERHEAD), (long) ~0L, (long) MALLOC_OVERHEAD, (long) 1L, 0, 1},
{ "sort_key_blocks", "", (gptr*) &check_param.sort_key_blocks, (gptr*) &check_param.sort_key_blocks, 0, GET_LONG, REQUIRED_ARG, OPT_SORT_KEY_BLOCKS, BUFFERS_WHEN_SORTING, 4L, 100L, 0L, 1L, 0, 1},
{ "decode_bits", "", (gptr*) &decode_bits, (gptr*) &decode_bits, 0, GET_LONG, REQUIRED_ARG, OPT_DECODE_BITS, 9L, 4L, 17L, 0L, 1L, 0, 1},
{ "ft_min_word_len", "", (gptr*) &ft_min_word_len, (gptr*) &ft_min_word_len, 0, GET_LONG, REQUIRED_ARG, OPT_FT_MIN_WORD_LEN, 4, 1, HA_FT_MAXLEN, 0, 1, 0, 1},
{ "ft_max_word_len", "", (gptr*) &ft_max_word_len, (gptr*) &ft_max_word_len, 0, GET_LONG, REQUIRED_ARG, OPT_FT_MAX_WORD_LEN, HA_FT_MAXLEN, 10, HA_FT_MAXLEN, 0, 1, 0, 1},
{ "ft_max_word_len_for_sort", "", (gptr*) &ft_max_word_len_for_sort, (gptr*) &ft_max_word_len_for_sort, 0, GET_LONG, REQUIRED_ARG, OPT_FT_MAX_WORD_LEN_FOR_SORT, 20, 4, HA_FT_MAXLEN, 0, 1, 0, 1},
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
};
static void print_version(void)
{
printf("%s Ver 2.1 for %s at %s\n", my_progname, SYSTEM_TYPE,
printf("%s Ver 2.2 for %s at %s\n", my_progname, SYSTEM_TYPE,
MACHINE_TYPE);
}
......@@ -323,10 +298,14 @@ static void usage(void)
print_defaults("my",load_default_groups);
printf("\nPossible variables for option --set-variable (-O) are:\n");
for (i=0; changeable_vars[i].name ; i++)
printf("%-20s current value: %lu\n",
changeable_vars[i].name,
*changeable_vars[i].varptr);
for (i=0; my_long_options[i].name ; i++)
{
if (!my_long_options[i].opt_is_var)
continue;
printf("%-20s current value: %lu\n", my_long_options[i].name,
*my_long_options[i].value);
}
}
......@@ -417,27 +396,6 @@ static my_bool get_one_option(int optid, const struct my_option *opt,
check_param.testflag|= T_VERBOSE;
check_param.verbose++;
break;
case 'O':
/* this is a temporary fix for variables to work until my_getopt */
/* can my_set_changeable_vars */
case OPT_KEY_BUFFER_SIZE:
case OPT_MYISAM_BLOCK_SIZE:
case OPT_READ_BUFFER_SIZE:
case OPT_WRITE_BUFFER_SIZE:
case OPT_SORT_BUFFER_SIZE:
case OPT_SORT_KEY_BLOCKS:
case OPT_DECODE_BITS:
case OPT_FT_MIN_WORD_LEN:
case OPT_FT_MAX_WORD_LEN:
case OPT_FT_MAX_WORD_LEN_FOR_SORT:
end= buff;
end= strmov(strmov(strmov(end, opt->name), "="), argument);
if (set_changeable_var(buff, changeable_vars))
{
usage();
exit(1);
}
break;
case 'R': /* Sort records */
old_testflag=check_param.testflag;
check_param.testflag|= T_SORT_RECORDS;
......@@ -492,11 +450,10 @@ static my_bool get_one_option(int optid, const struct my_option *opt,
static void get_options(register int *argc,register char ***argv)
{
int c,option_index=0;
int c, option_index=0;
load_defaults("my",load_default_groups,argc,argv);
load_defaults("my", load_default_groups, argc, argv);
default_argv= *argv;
set_all_changeable_vars(changeable_vars);
if (isatty(fileno(stdout)))
check_param.testflag|=T_WRITE_LOOP;
......
mysys/getvar.c
View file @ 11b1979b
......@@ -109,78 +109,3 @@ my_bool set_changeable_var(my_string str,CHANGEABLE_VAR *vars)
}
DBUG_RETURN(1);
}
my_bool my_set_changeable_var(my_string str, const struct my_option *vars)
{
char endchar;
my_string end;
DBUG_ENTER("my_set_changeable_var");
DBUG_PRINT("enter",("%s",str));
if (str)
{
if (!(end=strchr(str,'=')))
fprintf(stderr,"Can't find '=' in expression '%s' to option -O\n",str);
else
{
uint length,found_count=0;
const struct my_option *var, *found;
my_string var_end;
const char *name;
longlong num;
/* Skip end space from variable */
for (var_end=end ; end > str && isspace(var_end[-1]) ; var_end--) ;
length=(uint) (var_end-str);
/* Skip start space from argument */
for (end++ ; isspace(*end) ; end++) ;
for (var= vars, found= 0; (name= var->name); var++)
{
if (var->changeable_var)
{
if (!my_casecmp(name, str, length))
{
found= var; found_count++;
if (!name[length])
{
found_count=1;
break;
}
}
}
}
if (found_count == 0)
{
fprintf(stderr,"No variable match for: -O '%s'\n",str);
DBUG_RETURN(1);
}
if (found_count > 1)
{
fprintf(stderr,"Variable prefix '%*s' is not unique\n",length,str);
DBUG_RETURN(1);
}
num=strtoll(end, (char **)NULL, 10); endchar=strend(end)[-1];
if (endchar == 'k' || endchar == 'K')
num*=1024;
else if (endchar == 'm' || endchar == 'M')
num*=1024L*1024L;
else if (endchar == 'g' || endchar == 'G')
num*=1024L*1024L*1024L;
else if (!isdigit(endchar))
{
fprintf(stderr,"Unknown prefix used for variable value '%s'\n",str);
DBUG_RETURN(1);
}
if (num < (longlong) found->min_value)
num=(longlong) found->min_value;
else if (num > 0 && (ulonglong) num > (ulonglong) (ulong) found->max_value)
num=(longlong) (ulong) found->max_value;
num=((num- (longlong) found->sub_size) / (ulonglong) found->block_size);
/* (*found->varptr)= (long) (num*(ulonglong) found->block_size);*/
DBUG_RETURN(0);
}
}
DBUG_RETURN(1);
}
mysys/my_getopt.c
View file @ 11b1979b
......@@ -21,22 +21,36 @@
#include <my_getopt.h>
#include <assert.h>
static int sortopt (int *argc, char ***argv);
static int findopt (char *optpat, uint length,
const struct my_option **opt_res,
char **ffname);
static my_bool compare_strings (register const char *s, register const char *t,
uint length);
static longlong getopt_ll (char *arg, const struct my_option *optp, int *err);
static void init_variables(const struct my_option *options);
#define DISABLE_OPTION_COUNT 2
#define DISABLE_OPTION_COUNT 2
static char *special_opt_prefix[] = {"skip", "disable", "enable", 0};
#define ERR_UNKNOWN_OPTION 1
#define ERR_AMBIGUOUS_OPTION 2
#define ERR_NO_ARGUMENT_ALLOWED 3
#define ERR_ARGUMENT_REQUIRED 4
#define ERR_VAR_PREFIX_NOT_UNIQUE 5
#define ERR_UNKNOWN_VARIABLE 6
#define ERR_MUST_BE_VARIABLE 7
#define ERR_UNKNOWN_SUFFIX 8
static char *special_opt_prefix[]= {"skip", "disable", "enable", "maximum", 0};
/* function: handle_options
Sort options; put options first, until special end of options (--), or
until end of argv. Parse options; check that the given option matches with
one of the options in struct 'my_option', return error in case of ambiguous
or unknown option. Check that option was given an argument if it requires
one. Call function 'get_one_option()' once for each option.
/*
function: handle_options
Sort options; put options first, until special end of options (--), or
until end of argv. Parse options; check that the given option matches with
one of the options in struct 'my_option', return error in case of ambiguous
or unknown option. Check that option was given an argument if it requires
one. Call function 'get_one_option()' once for each option.
*/
extern int handle_options (int *argc, char ***argv,
const struct my_option *longopts,
......@@ -44,25 +58,29 @@ extern int handle_options (int *argc, char ***argv,
const struct my_option *,
char *))
{
uint opt_found, argvpos = 0, length, spec_len, i;
my_bool end_of_options = 0, must_be_var = 0;
char *progname = *(*argv), **pos, *optend, *prev_found;
uint opt_found, argvpos= 0, length, spec_len, i;
int err;
my_bool end_of_options= 0, must_be_var, set_maximum_value;
char *progname= *(*argv), **pos, *optend, *prev_found;
const struct my_option *optp;
(*argc)--;
(*argv)++;
for (pos = *argv; *pos; pos++)
(*argc)--; /* Skip the program name */
(*argv)++; /* --- || ---- */
init_variables(longopts);
for (pos= *argv; *pos; pos++)
{
char *cur_arg= *pos;
if (*cur_arg == '-' && *(cur_arg + 1) && !end_of_options) // must be opt.
{
char *argument = 0;
char *argument= 0;
must_be_var= 0;
set_maximum_value= 0;
// check for long option, or --set-variable (-O)
if (*(cur_arg + 1) == '-' || *(cur_arg + 1) == 'O')
{
if (*(cur_arg + 1) == 'O' || !strncmp(cur_arg, "--set-variable", 14))
if (*(cur_arg + 1) == 'O' ||
!compare_strings(cur_arg, "--set-variable", 14))
{
must_be_var= 1;
......@@ -76,7 +94,7 @@ extern int handle_options (int *argc, char ***argv,
{
fprintf(stderr, "%s: Option '-O' requires an argument\n",
progname);
return 4;
return ERR_ARGUMENT_REQUIRED;
}
pos++;
cur_arg= *pos;
......@@ -94,7 +112,7 @@ extern int handle_options (int *argc, char ***argv,
fprintf(stderr,
"%s: Option '--set-variable' requires an argument\n",
progname);
return 4;
return ERR_ARGUMENT_REQUIRED;
}
}
else if (*cur_arg) // garbage, or another option. break out
......@@ -110,7 +128,7 @@ extern int handle_options (int *argc, char ***argv,
fprintf(stderr,
"%s: Option '--set-variable' requires an argument\n",
progname);
return 4;
return ERR_ARGUMENT_REQUIRED;
}
pos++;
cur_arg= *pos;
......@@ -122,37 +140,39 @@ extern int handle_options (int *argc, char ***argv,
{
if (!*(cur_arg + 2)) // '--' means end of options, look no further
{
end_of_options = 1;
end_of_options= 1;
(*argc)--;
continue;
}
cur_arg+= 2; // skip the double dash
}
for (optend = cur_arg; *optend && *optend != '='; optend++) ;
length = optend - cur_arg;
for (optend= cur_arg; *optend && *optend != '='; optend++) ;
length= optend - cur_arg;
/*
Find first the right option. Return error in case of an ambiguous,
or unknown option
*/
optp = longopts;
if (!(opt_found = findopt(cur_arg, length, &optp, &prev_found)))
optp= longopts;
if (!(opt_found= findopt(cur_arg, length, &optp, &prev_found)))
{
/*
Didn't find any matching option. Let's see if someone called
option with a special option prefix
*/
if (*optend != '=' && !must_be_var)
if (!must_be_var)
{
for (i = 0; special_opt_prefix[i]; i++)
if (*optend == '=')
must_be_var= 1;
for (i= 0; special_opt_prefix[i]; i++)
{
spec_len = strlen(special_opt_prefix[i]);
if (!strncmp(special_opt_prefix[i], cur_arg, spec_len) &&
spec_len= strlen(special_opt_prefix[i]);
if (!compare_strings(special_opt_prefix[i], cur_arg, spec_len) &&
cur_arg[spec_len] == '-')
{
// We were called with a special prefix, we can reuse opt_found
cur_arg += (spec_len + 1);
if ((opt_found = findopt(cur_arg, length - (spec_len + 1),
&optp, &prev_found)))
if ((opt_found= findopt(cur_arg, length - (spec_len + 1),
&optp, &prev_found)))
{
if (opt_found > 1)
{
......@@ -160,12 +180,17 @@ extern int handle_options (int *argc, char ***argv,
"%s: ambiguous option '--%s-%s' (--%s-%s)\n",
progname, special_opt_prefix[i], cur_arg,
special_opt_prefix[i], prev_found);
return 2;
return ERR_AMBIGUOUS_OPTION;
}
if (i < DISABLE_OPTION_COUNT)
optend= "=0";
else // enable
else if (!compare_strings(special_opt_prefix[i],"enable",6))
optend= "=1";
else if (!compare_strings(special_opt_prefix[i],"maximum",7))
{
set_maximum_value= 1;
must_be_var= 1;
}
break; // note break from the inner loop, main loop continues
}
}
......@@ -177,13 +202,13 @@ extern int handle_options (int *argc, char ***argv,
{
fprintf(stderr,
"%s: unknown variable '%s'\n", progname, cur_arg);
return 7;
return ERR_UNKNOWN_VARIABLE;
}
else
{
fprintf(stderr,
"%s: unknown option '--%s'\n", progname, cur_arg);
return 1;
return ERR_UNKNOWN_OPTION;
}
}
}
......@@ -193,26 +218,26 @@ extern int handle_options (int *argc, char ***argv,
{
fprintf(stderr, "%s: variable prefix '%s' is not unique\n",
progname, cur_arg);
return 6;
return ERR_VAR_PREFIX_NOT_UNIQUE;
}
else
{
fprintf(stderr, "%s: ambiguous option '--%s' (%s, %s)\n",
progname, cur_arg, prev_found, optp->name);
return 2;
return ERR_AMBIGUOUS_OPTION;
}
}
if (must_be_var && !optp->changeable_var)
if (must_be_var && !optp->opt_is_var)
{
fprintf(stderr, "%s: the argument to -O must be a variable\n",
progname);
return 8;
return ERR_MUST_BE_VARIABLE;
}
if (optp->arg_type == NO_ARG && *optend == '=')
{
fprintf(stderr, "%s: option '--%s' cannot take an argument\n",
progname, optp->name);
return 3;
return ERR_NO_ARGUMENT_ALLOWED;
}
else if (optp->arg_type == REQUIRED_ARG && !*optend)
{
......@@ -221,21 +246,21 @@ extern int handle_options (int *argc, char ***argv,
{
fprintf(stderr, "%s: option '--%s' requires an argument\n",
progname, optp->name);
return 4;
return ERR_ARGUMENT_REQUIRED;
}
pos++;
argument = *pos;
argument= *pos;
(*argc)--;
}
else if (*optend == '=')
argument = *(optend + 1) ? optend + 1 : "";
argument= *(optend + 1) ? optend + 1 : "";
}
else // must be short option
{
my_bool skip;
for (skip = 0, optend = (cur_arg + 1); *optend && !skip; optend++)
for (skip= 0, optend= (cur_arg + 1); *optend && !skip; optend++)
{
for (optp = longopts; optp->id ; optp++)
for (optp= longopts; optp->id ; optp++)
{
if (optp->id == (int) (uchar) *optend)
{
......@@ -244,12 +269,12 @@ extern int handle_options (int *argc, char ***argv,
{
if (*(optend + 1))
{
argument = (optend + 1);
argument= (optend + 1);
/*
The rest of the option is option argument
This is in effect a jump out of this loop
*/
skip = 1;
skip= 1;
}
else if (optp->arg_type == REQUIRED_ARG)
{
......@@ -258,10 +283,10 @@ extern int handle_options (int *argc, char ***argv,
{
fprintf(stderr, "%s: option '-%c' requires an argument\n",
progname, optp->id);
return 4;
return ERR_ARGUMENT_REQUIRED;
}
pos++;
argument = *pos;
argument= *pos;
(*argc)--;
}
}
......@@ -272,23 +297,41 @@ extern int handle_options (int *argc, char ***argv,
}
}
}
get_one_option(optp->id, optp, argument);
if (optp->opt_is_var)
{
gptr *result_pos= (set_maximum_value) ?
optp->u_max_value : optp->value;
if (optp->var_type == GET_LONG)
*((long*) result_pos)= (long) getopt_ll(argument, optp, &err);
else if (optp->var_type == GET_LL)
*((longlong*) result_pos)= getopt_ll(argument, optp, &err);
else if (optp->var_type == GET_STR)
*((char**) result_pos)= argument;
if (err)
return ERR_UNKNOWN_SUFFIX;
}
else
get_one_option(optp->id, optp, argument);
(*argc)--; // option handled (shortorlong), decrease argument count
}
else // non-option found
(*argv)[argvpos++] = cur_arg;
(*argv)[argvpos++]= cur_arg;
}
return 0;
}
/* function: findopt
Arguments: opt_pattern, length of opt_pattern, opt_struct, first found
name (ffname)
Go through all options in the my_option struct. Return number
of options found that match the pattern and in the argument
list the option found, if any. In case of ambiguous option, store
the name in ffname argument
/*
function: findopt
Arguments: opt_pattern, length of opt_pattern, opt_struct, first found
name (ffname)
Go through all options in the my_option struct. Return number
of options found that match the pattern and in the argument
list the option found, if any. In case of ambiguous option, store
the name in ffname argument
*/
static int findopt (char *optpat, uint length,
const struct my_option **opt_res,
......@@ -297,13 +340,13 @@ static int findopt (char *optpat, uint length,
int count;
struct my_option *opt= (struct my_option *) *opt_res;
for (count = 0; opt->id; opt++)
for (count= 0; opt->id; opt++)
{
if (!strncmp(opt->name, optpat, length)) // match found
if (!compare_strings(opt->name, optpat, length)) // match found
{
(*opt_res) = opt;
(*opt_res)= opt;
if (!count)
*ffname = (char *) opt->name; // we only need to know one prev
*ffname= (char *) opt->name; // we only need to know one prev
if (length == strlen(opt->name)) // exact match
return 1;
count++;
......@@ -311,3 +354,84 @@ static int findopt (char *optpat, uint length,
}
return count;
}
/*
function: compare_strings
Works like strncmp, other than 1.) considers '-' and '_' the same.
2.) Returns -1 if strings differ, 0 if they are equal
*/
static my_bool compare_strings(register const char *s, register const char *t,
uint length)
{
char const *end= s + length;
for (;s != end ; s++, t++)
{
if ((*s != '-' ? *s : '_') != (*t != '-' ? *t : '_'))
return 1;
}
return 0;
}
/*
function: getopt_ll
Evaluates and returns the value that user gave as an argument
to a variable. Recognizes (case insensitive) K as KILO, M as MEGA
and G as GIGA bytes. Some values must be in certain blocks, as
defined in the given my_option struct, this function will check
that those values are honored.
In case of an error, set error value in *err.
*/
static longlong getopt_ll (char *arg, const struct my_option *optp, int *err)
{
char *endchar;
longlong num;
*err= 0;
num= strtoll(arg, &endchar, 10);
if (*endchar == 'k' || *endchar == 'K')
num*= 1024L;
else if (*endchar == 'm' || *endchar == 'M')
num*= 1024L * 1024L;
else if (*endchar == 'g' || *endchar == 'G')
num*= 1024L * 1024L * 1024L;
else if (*endchar)
{
fprintf(stderr,
"Unknown suffix '%c' used for variable '%s' (value '%s')\n",
*endchar, optp->name, arg);
*err= 1;
}
if (num < (longlong) optp->min_value)
num= (longlong) optp->min_value;
else if (num > 0 && (ulonglong) num > (ulonglong) (ulong) optp->max_value)
num= (longlong) (ulong) optp->max_value;
num= ((num - (longlong) optp->sub_size) / (ulonglong) optp->block_size);
return (longlong) (num * (ulonglong) optp->block_size);
}
/*
function: init_variables
initialize all variables to their default values
*/
static void init_variables(const struct my_option *options)
{
for ( ; options->name ; options++)
{
if (options->opt_is_var)
{
if (options->var_type == GET_LONG)
*((long*) options->u_max_value)= *((long*) options->value)=
options->def_value;
else if (options->var_type == GET_LL)
*((longlong*) options->u_max_value)= *((longlong*) options->value)=
options->def_value;
}
}
}
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