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Return the previous sys print callbacks

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This allows for temporary overrides.
This commit is contained in:
Bill Currie 2020-02-23 11:41:19 +09:00
parent 52d54f98bf
commit f8b1a3a89f
2 changed files with 8 additions and 4 deletions
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4
include/QF/sys.h
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@ -65,8 +65,8 @@ int Sys_mkdir (const char *path);
typedef void (*sys_printf_t) (const char *fmt, va_list args) __attribute__((format(printf, 1, 0))); typedef void (*sys_printf_t) (const char *fmt, va_list args) __attribute__((format(printf, 1, 0)));
typedef void (*sys_error_t) (void *data); typedef void (*sys_error_t) (void *data);
void Sys_SetStdPrintf (sys_printf_t func); sys_printf_t Sys_SetStdPrintf (sys_printf_t func);
void Sys_SetErrPrintf (sys_printf_t func); sys_printf_t Sys_SetErrPrintf (sys_printf_t func);
void Sys_PushErrorHandler (sys_error_t func, void *data); void Sys_PushErrorHandler (sys_error_t func, void *data);
void Sys_PopErrorHandler (void); void Sys_PopErrorHandler (void);

8
libs/util/sys.c
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@ -240,16 +240,20 @@ Sys_FileExists (const char *path)
for want of a better name, but it sets the function pointer for the for want of a better name, but it sets the function pointer for the
actual implementation of Sys_Printf. actual implementation of Sys_Printf.
*/ */
VISIBLE void VISIBLE sys_printf_t
Sys_SetStdPrintf (sys_printf_t func) Sys_SetStdPrintf (sys_printf_t func)
{ {
sys_printf_t prev = sys_std_printf_function;
sys_std_printf_function = func; sys_std_printf_function = func;
return prev;
} }
VISIBLE void VISIBLE sys_printf_t
Sys_SetErrPrintf (sys_printf_t func) Sys_SetErrPrintf (sys_printf_t func)
{ {
sys_printf_t prev = sys_err_printf_function;
sys_err_printf_function = func; sys_err_printf_function = func;
return prev;
} }
void void