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tools: Implement a replacement for getopt_long(). 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2021-10-05 11:51:57 +02:00
parent 43cd5d8a2d
commit 9c4cbde78f
2 changed files with 113 additions and 3 deletions
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110
tools/tools.h
View File

@ -310,4 +310,114 @@ static inline int make_temp_file( const char *prefix, const char *suffix, char *
exit(1);
}
/* command-line option parsing */
/* partly based on the Glibc getopt() implementation */
struct long_option
{
const char *name;
int has_arg;
int val;
};
static inline struct strarray parse_options( int argc, char **argv, const char *short_opts,
const struct long_option *long_opts, int long_only,
void (*callback)( int, char* ) )
{
struct strarray ret = empty_strarray;
const char *flag;
char *start, *end;
int i;
#define OPT_ERR(fmt) { callback( '?', strmake( fmt, argv[1] )); continue; }
for (i = 1; i < argc; i++)
{
if (argv[i][0] != '-' || !argv[i][1]) /* not an option */
{
strarray_add( &ret, argv[i] );
continue;
}
if (!strcmp( argv[i], "--" ))
{
/* add remaining args */
while (++i < argc) strarray_add( &ret, argv[i] );
break;
}
start = argv[i] + 1 + (argv[i][1] == '-');
if (argv[i][1] == '-' || (long_only && (argv[i][2] || !strchr( short_opts, argv[i][1] ))))
{
/* handle long option */
const struct long_option *opt, *found = NULL;
int count = 0;
if (!(end = strchr( start, '=' ))) end = start + strlen(start);
for (opt = long_opts; opt && opt->name; opt++)
{
if (strncmp( opt->name, start, end - start )) continue;
if (!opt->name[end - start]) /* exact match */
{
found = opt;
count = 1;
break;
}
if (!found)
{
found = opt;
count++;
}
else if (long_only || found->has_arg != opt->has_arg || found->val != opt->val)
{
count++;
}
}
if (count > 1) OPT_ERR( "option '%s' is ambiguous" );
if (found)
{
if (*end)
{
if (!found->has_arg) OPT_ERR( "argument not allowed in '%s'" );
end++; /* skip '=' */
}
else if (found->has_arg == 1)
{
if (i == argc - 1) OPT_ERR( "option '%s' requires an argument" );
end = argv[++i];
}
else end = NULL;
callback( found->val, end );
continue;
}
if (argv[i][1] == '-' || !long_only || !strchr( short_opts, argv[i][1] ))
OPT_ERR( "unrecognized option '%s'" );
}
/* handle short option */
for ( ; *start; start++)
{
if (!(flag = strchr( short_opts, *start ))) OPT_ERR( "invalid option '%s'" );
if (flag[1] == ':')
{
end = start + 1;
if (!*end) end = NULL;
if (flag[2] != ':' && !end)
{
if (i == argc - 1) OPT_ERR( "option '%s' requires an argument" );
end = argv[++i];
}
callback( *start, end );
break;
}
callback( *start, NULL );
}
}
return ret;
#undef OPT_ERR
}
#endif /* __WINE_TOOLS_H */

6
tools/winedump/main.c
View File

@ -257,11 +257,11 @@ void do_usage (const char *arg)
/*******************************************************************
* parse_options
* parse_cmdline
*
* Parse options from the argv array
*/
static void parse_options (char *argv[])
static void parse_cmdline (char *argv[])
{
const struct my_option *opt;
char *const *ptr;
@ -388,7 +388,7 @@ int main (int argc, char *argv[])
globals.input_name = NULL;
globals.dumpsect = NULL;
parse_options (argv);
parse_cmdline (argv);
memset (&symbol, 0, sizeof (parsed_symbol));