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some more functions, required by nsDialogs and probably more plug-ins

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git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@5834 212acab6-be3b-0410-9dea-997c60f758d6
This commit is contained in:
kichik 2008-12-12 17:37:22 +00:00
parent e1a741ef08
commit 7ee44a65dc
2 changed files with 141 additions and 0 deletions
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135
Contrib/ExDLL/plugin.c
View file

@ -7,6 +7,7 @@ stack_t **g_stacktop;
char *g_variables;
// utility functions (not required but often useful)
int NSISCALL popstring(char *str)
{
stack_t *th;
@ -18,6 +19,17 @@ int NSISCALL popstring(char *str)
return 0;
}
int NSISCALL popstringn(char *str, int maxlen)
{
stack_t *th;
if (!g_stacktop || !*g_stacktop) return 1;
th=(*g_stacktop);
if (str) lstrcpynA(str,th->text,maxlen?maxlen:g_stringsize);
*g_stacktop = th->next;
GlobalFree((HGLOBAL)th);
return 0;
}
void NSISCALL pushstring(const char *str)
{
stack_t *th;
@ -39,3 +51,126 @@ void NSISCALL setuservariable(const int varnum, const char *var)
if (var != NULL && varnum >= 0 && varnum < __INST_LAST)
lstrcpyA(g_variables + varnum*g_stringsize, var);
}
// playing with integers
int NSISCALL myatoi(const char *s)
{
int v=0;
if (*s == '0' && (s[1] == 'x' || s[1] == 'X'))
{
s++;
for (;;)
{
int c=*(++s);
if (c >= '0' && c <= '9') c-='0';
else if (c >= 'a' && c <= 'f') c-='a'-10;
else if (c >= 'A' && c <= 'F') c-='A'-10;
else break;
v<<=4;
v+=c;
}
}
else if (*s == '0' && s[1] <= '7' && s[1] >= '0')
{
for (;;)
{
int c=*(++s);
if (c >= '0' && c <= '7') c-='0';
else break;
v<<=3;
v+=c;
}
}
else
{
int sign=0;
if (*s == '-') sign++; else s--;
for (;;)
{
int c=*(++s) - '0';
if (c < 0 || c > 9) break;
v*=10;
v+=c;
}
if (sign) v = -v;
}
return v;
}
int NSISCALL myatoi_or(const char *s)
{
int v=0;
if (*s == '0' && (s[1] == 'x' || s[1] == 'X'))
{
s++;
for (;;)
{
int c=*(++s);
if (c >= '0' && c <= '9') c-='0';
else if (c >= 'a' && c <= 'f') c-='a'-10;
else if (c >= 'A' && c <= 'F') c-='A'-10;
else break;
v<<=4;
v+=c;
}
}
else if (*s == '0' && s[1] <= '7' && s[1] >= '0')
{
for (;;)
{
int c=*(++s);
if (c >= '0' && c <= '7') c-='0';
else break;
v<<=3;
v+=c;
}
}
else
{
int sign=0;
if (*s == '-') sign++; else s--;
for (;;)
{
int c=*(++s) - '0';
if (c < 0 || c > 9) break;
v*=10;
v+=c;
}
if (sign) v = -v;
}
// Support for simple ORed expressions
if (*s == '|')
{
v |= myatoi_or(s+1);
}
return v;
}
int NSISCALL popint()
{
char buf[128];
if (popstringn(buf,sizeof(buf)))
return 0;
return myatoi(buf);
}
int NSISCALL popint_or()
{
char buf[128];
if (popstringn(buf,sizeof(buf)))
return 0;
return myatoi_or(buf);
}
void NSISCALL pushint(int value)
{
char buffer[1024];
wsprintf(buffer, "%d", value);
pushstring(buffer);
}

6
Contrib/ExDLL/plugin.h
View file

@ -56,7 +56,13 @@ extern stack_t **g_stacktop;
extern char *g_variables;
int NSISCALL popstring(char *str); // 0 on success, 1 on empty stack
int NSISCALL popstringn(char *str, int maxlen); // with length limit, pass 0 for g_stringsize
int NSISCALL popint(); // pops an integer
int NSISCALL popint_or(); // with support for or'ing (2|4|8)
int NSISCALL myatoi(const char *s); // converts a string to an integer
int NSISCALL myatoi_or(const char *s); // with support for or'ing (2|4|8)
void NSISCALL pushstring(const char *str);
void NSISCALL pushint(int value);
char * NSISCALL getuservariable(const int varnum);
void NSISCALL setuservariable(const int varnum, const char *var);