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string functions

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--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%4059
This commit is contained in:
Borja Ferrer 2006-08-06 02:16:03 +00:00
parent 84ec7c8713
commit 2665d13475
1 changed files with 74 additions and 0 deletions
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74
sourcepawn/vm/sp_vm.c
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@ -11,6 +11,10 @@ int main()
/** temporary testing area */
sp_context_t ctx;
cell_t l, *p;
cell_t arr1[] = {1,3,3,7};
cell_t arr2[] = {123,1234,12345,123456};
const char *str = "hat hat";
char buf[20];
ctx.data = (uint8_t *)malloc(50000);
ctx.memory = 50000;
@ -25,6 +29,12 @@ int main()
assert(SP_HeapAlloc(&ctx, 500, &l, &p) == SP_ERR_NONE);
assert(SP_HeapRelease(&ctx, l) == SP_ERR_NONE);
assert(SP_PushCell(&ctx, 1337) == SP_ERR_NONE);
assert(SP_PushCellArray(&ctx, &l, &p, arr1, 4) == SP_ERR_NONE);
assert(SP_HeapRelease(&ctx, l) == SP_ERR_NONE);
assert(SP_PushCellsFromArray(&ctx, arr2, 4) == SP_ERR_NONE);
assert(SP_PushString(&ctx, &l, &p, str) == SP_ERR_NONE);
assert(SP_LocalToString(&ctx, l, NULL, buf, 20) == SP_ERR_NONE);
assert(SP_HeapRelease(&ctx, l) == SP_ERR_NONE);
return 0;
}
@ -405,3 +415,67 @@ int SP_PushCellArray(sp_context_t *ctx, cell_t *local_addr, cell_t **phys_addr,
return SP_ERR_NONE;
}
int SP_LocalToString(sp_context_t *ctx, cell_t local_addr, int *chars, char *buffer, size_t maxlength)
{
size_t len = 0;
cell_t *src;
if (((local_addr >= ctx->hp) && (local_addr < ctx->sp)) || (local_addr < 0) || ((ucell_t)local_addr >= ctx->memory))
{
return SP_ERR_INVALID_ADDRESS;
}
src = (cell_t *)(ctx->data + local_addr);
while ((*src != '\0') && (len < maxlength))
{
buffer[len++] = (char)*src++;
}
if (len >= maxlength)
{
len = maxlength - 1;
}
if (len >= 0)
{
buffer[len] = '\0';
}
if (chars)
{
*chars = len;
}
return SP_ERR_NONE;
}
int SP_PushString(sp_context_t *ctx, cell_t *local_addr, cell_t **phys_addr, const char *string)
{
cell_t *ph_addr;
int err;
unsigned int i, numcells = strlen(string);
if ((err = SP_HeapAlloc(ctx, numcells+1, local_addr, &ph_addr)) != SP_ERR_NONE)
{
return err;
}
for (i=0; i<numcells; i++)
{
ph_addr[i] = (cell_t)string[i];
}
ph_addr[numcells] = '\0';
if (phys_addr)
{
*phys_addr = ph_addr;
}
if ((err = SP_PushCell(ctx, *local_addr)) != SP_ERR_NONE)
{
SP_HeapRelease(ctx, *local_addr);
return err;
}
return SP_ERR_NONE;
}