diff options
| -rw-r--r-- | pdf/pdf_function.c | 34 |
1 files changed, 16 insertions, 18 deletions
diff --git a/pdf/pdf_function.c b/pdf/pdf_function.c index 005572df..b561201e 100644 --- a/pdf/pdf_function.c +++ b/pdf/pdf_function.c @@ -1156,35 +1156,33 @@ load_exponential_func(fz_context *ctx, pdf_function *func, pdf_obj *dict) fz_warn(ctx, "exponential function input domain includes illegal input value zero"); } + for (i = 0; i < func->n; i++) + { + func->u.e.c0[i] = 0; + func->u.e.c1[i] = 1; + } + obj = pdf_dict_gets(dict, "C0"); if (pdf_is_array(obj)) { - func->n = pdf_array_len(obj); - if (func->n >= MAXN) - fz_throw(ctx, "exponential function result array out of range"); - for (i = 0; i < func->n; i++) + int ranges = fz_mini(func->n, pdf_array_len(obj)); + if (ranges != func->n) + fz_warn(ctx, "too few/many C0 constants for exponential function"); + + for (i = 0; i < ranges; i++) func->u.e.c0[i] = pdf_to_real(pdf_array_get(obj, i)); } - else - { - func->n = 1; - func->u.e.c0[0] = 0; - } obj = pdf_dict_gets(dict, "C1"); if (pdf_is_array(obj)) { - if (pdf_array_len(obj) != func->n) - fz_throw(ctx, "/C1 must match /C0 length"); - for (i = 0; i < func->n; i++) + int ranges = fz_mini(func->n, pdf_array_len(obj)); + if (ranges != func->n) + fz_warn(ctx, "too few/many C1 constants for exponential function"); + + for (i = 0; i < ranges; i++) func->u.e.c1[i] = pdf_to_real(pdf_array_get(obj, i)); } - else - { - if (func->n != 1) - fz_throw(ctx, "/C1 must match /C0 length"); - func->u.e.c1[0] = 1; - } } static void |