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added exdll.h that other plugins should use, for better version compatibility

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git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@1117 212acab6-be3b-0410-9dea-997c60f758d6
This commit is contained in:
justin1014 2002-09-21 18:28:27 +00:00
parent 9507169e34
commit 766341d716
1 changed files with 87 additions and 0 deletions
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87
Contrib/ExDLL/exdll.h Normal file
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#ifndef _EXDLL_H_
#define _EXDLL_H_
// only include this file from one place in your DLL.
// (it is all static shit, if you use it in two places it will fail)
#define EXDLL_INIT() { \
g_stringsize=string_size; \
g_stacktop=stacktop; \
g_variables=variables; }
typedef struct _stack_t {
struct _stack_t *next;
char text[1]; // this should be the length of string_size
} stack_t;
static int g_stringsize;
static stack_t **g_stacktop;
static char *g_variables;
static int popstring(char *str); // 0 on success, 1 on empty stack
static void pushstring(char *str);
enum
{
INST_0, // $0
INST_1, // $1
INST_2, // $2
INST_3, // $3
INST_4, // $4
INST_5, // $5
INST_6, // $6
INST_7, // $7
INST_8, // $8
INST_9, // $9
INST_R0, // $R0
INST_R1, // $R1
INST_R2, // $R2
INST_R3, // $R3
INST_R4, // $R4
INST_R5, // $R5
INST_R6, // $R6
INST_R7, // $R7
INST_R8, // $R8
INST_R9, // $R9
INST_CMDLINE, // $CMDLINE
INST_INSTDIR, // $INSTDIR
INST_OUTDIR, // $OUTDIR
INST_EXEDIR, // $EXEDIR
INST_LANG, // $LANGUAGE
__INST_LAST
};
// utility functions (not required but often useful)
static int popstring(char *str)
{
stack_t *th;
if (!g_stacktop || !*g_stacktop) return 1;
th=(*g_stacktop);
lstrcpy(str,th->text);
*g_stacktop = th->next;
GlobalFree((HGLOBAL)th);
return 0;
}
static void pushstring(char *str)
{
stack_t *th;
if (!g_stacktop) return;
th=(stack_t*)GlobalAlloc(GPTR,sizeof(stack_t)+g_stringsize);
lstrcpyn(th->text,str,g_stringsize);
th->next=*g_stacktop;
*g_stacktop=th;
}
static char *getuservariable(int varnum)
{
if (varnum < 0 || varnum >= __INST_LAST) return NULL;
return g_variables+varnum*g_stringsize;
}
#endif//_EXDLL_H_