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#include "fitz.h"
void *
fz_malloc(fz_context *ctx, unsigned int size)
{
void *p = ctx->alloc->malloc(ctx->alloc->user, size);
if (p == NULL)
fz_throw(ctx, "malloc of %d bytes failed", size);
return p;
}
void *
fz_malloc_no_throw(fz_context *ctx, unsigned int size)
{
return ctx->alloc->malloc(ctx->alloc->user, size);
}
void *
fz_malloc_array(fz_context *ctx, unsigned int count, unsigned int size)
{
void *p;
if (count == 0 || size == 0)
return 0;
if (count > UINT_MAX / size)
fz_throw(ctx, "malloc of array (%d x %d bytes) failed (integer overflow)", count, size);
p = ctx->alloc->malloc(ctx->alloc->user, count * size);
if (p == NULL)
fz_throw(ctx, "malloc of array (%d x %d bytes) failed", count, size);
return p;
}
void *
fz_malloc_array_no_throw(fz_context *ctx, unsigned int count, unsigned int size)
{
if (count == 0 || size == 0)
return 0;
if (count > UINT_MAX / size)
{
fprintf(stderr, "error: malloc of array (%d x %d bytes) failed (integer overflow)", count, size);
return NULL;
}
return ctx->alloc->malloc(ctx->alloc->user, count * size);
}
void *
fz_calloc(fz_context *ctx, unsigned int count, unsigned int size)
{
void *p;
if (count == 0 || size == 0)
return 0;
if (count > UINT_MAX / size)
{
fz_throw(ctx, "calloc (%d x %d bytes) failed (integer overflow)", count, size);
}
p = ctx->alloc->malloc(ctx->alloc->user, count * size);
if (p == NULL)
{
fz_throw(ctx, "calloc (%d x %d bytes) failed", count, size);
}
memset(p, 0, count*size);
return p;
}
void *
fz_calloc_no_throw(fz_context *ctx, unsigned int count, unsigned int size)
{
void *p;
if (count == 0 || size == 0)
return 0;
if (count > UINT_MAX / size)
{
fprintf(stderr, "error: calloc (%d x %d bytes) failed (integer overflow)\n", count, size);
return NULL;
}
p = ctx->alloc->malloc(ctx->alloc->user, count * size);
if (p != NULL)
{
memset(p, 0, count*size);
}
return p;
}
void *
fz_resize_array(fz_context *ctx, void *p, unsigned int count, unsigned int size)
{
void *np;
if (count == 0 || size == 0)
{
fz_free(ctx, p);
return 0;
}
if (count > UINT_MAX / size)
fz_throw(ctx, "resize array (%d x %d bytes) failed (integer overflow)", count, size);
np = ctx->alloc->realloc(ctx->alloc->user, p, count * size);
if (np == NULL)
fz_throw(ctx, "resize array (%d x %d bytes) failed", count, size);
return np;
}
void *
fz_resize_array_no_throw(fz_context *ctx, void *p, unsigned int count, unsigned int size)
{
if (count == 0 || size == 0)
{
fz_free(ctx, p);
return 0;
}
if (count > UINT_MAX / size)
{
fprintf(stderr, "error: resize array (%d x %d bytes) failed (integer overflow)\n", count, size);
return NULL;
}
return ctx->alloc->realloc(ctx->alloc->user, p, count * size);
}
void
fz_free(fz_context *ctx, void *p)
{
ctx->alloc->free(ctx->alloc->user, p);
}
char *
fz_strdup(fz_context *ctx, char *s)
{
int len = strlen(s) + 1;
char *ns = fz_malloc(ctx, len);
memcpy(ns, s, len);
return ns;
}
char *
fz_strdup_no_throw(fz_context *ctx, char *s)
{
int len = strlen(s) + 1;
char *ns = fz_malloc_no_throw(ctx, len);
if (ns != NULL)
memcpy(ns, s, len);
return ns;
}
static void *
fz_malloc_default(void *opaque, unsigned int size)
{
return malloc(size);
}
static void *
fz_realloc_default(void *opaque, void *old, unsigned int size)
{
return realloc(old, size);
}
static void
fz_free_default(void *opaque, void *ptr)
{
free(ptr);
}
fz_alloc_context fz_alloc_default =
{
NULL,
fz_malloc_default,
fz_realloc_default,
fz_free_default
} ;
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