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getlopt: Machinery to avoid leaking strdup() memory.

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Hm, why are we using strdup, anyway?



git-svn-id: svn://scm.orgis.org/mpg123/trunk@4657 35dc7657-300d-0410-a2e5-dc2837fedb53
This commit is contained in:
thor
2020-04-26 14:04:33 +00:00
parent 5729b3092c
commit cd793ecebd
5 changed files with 79 additions and 47 deletions
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13
src/getlopt.h
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@@ -18,14 +18,16 @@ extern int loptind; /* index in argv[] */
extern int loptchr; /* index in argv[loptind] */
extern char *loptarg; /* points to argument if present, else to option */
typedef struct {
struct topt;
typedef struct topt topt;
struct topt {
char sname; /* short option name, can be 0 */
char *lname; /* long option name, can be 0 */
int flags; /* see below */
void (*func)(char *); /* called if != 0 (after setting of var) */
void (*func)(char *, topt *); /* called if != 0 (after setting of var) */
void *var; /* type is *long, *char or **char, see below */
long value;
} topt;
};
/* ThOr: make this clear; distict long from int (since this is != on my Alpha) and really use a flag for every case (spare the 0 case
for .... no flag) */
@@ -34,6 +36,8 @@ for .... no flag) */
#define GLO_INT 4
#define GLO_LONG 8
#define GLO_DOUBLE 16
/* This is set if getlopt allocates memory for var. */
#define GLO_VAR_MEM 32
/* flags:
* bit 0 = 0 - no argument
@@ -64,7 +68,8 @@ for .... no flag) */
#define GLO_CONTINUE -3
int getlopt (int argc, char *argv[], topt *opts);
// Helper to set a char parameter, avoiding memory leaks.
void getlopt_set_char(topt *opts, char *name, char *value);
/* return values:
* GLO_END (0) end of options
* GLO_UNKNOWN (-1) unknown option *loptarg