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- /* Copyright (C) 1993, 2000 Aladdin Enterprises. All rights reserved.
-
- This file is part of AFPL Ghostscript.
-
- AFPL Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author or
- distributor accepts any responsibility for the consequences of using it, or
- for whether it serves any particular purpose or works at all, unless he or
- she says so in writing. Refer to the Aladdin Free Public License (the
- "License") for full details.
-
- Every copy of AFPL Ghostscript must include a copy of the License, normally
- in a plain ASCII text file named PUBLIC. The License grants you the right
- to copy, modify and redistribute AFPL Ghostscript, but only under certain
- conditions described in the License. Among other things, the License
- requires that the copyright notice and this notice be preserved on all
- copies.
- */
-
- /*$Id: iparam.c,v 1.5 2000/09/19 19:00:46 lpd Exp $ */
- /* Interpreter implementations of parameter dictionaries */
- #include "memory_.h"
- #include "string_.h"
- #include "ghost.h"
- #include "errors.h"
- #include "oper.h" /* for check_type */
- #include "opcheck.h"
- #include "ialloc.h"
- #include "idict.h"
- #include "imemory.h" /* for iutil.h */
- #include "iname.h"
- #include "istack.h"
- #include "iparam.h"
- #include "iutil.h" /* for num_params */
- #include "ivmspace.h"
- #include "store.h"
-
- /* ================ Utilities ================ */
-
- /* Convert a key to a ref. */
- private int
- ref_param_key(const iparam_list * plist, gs_param_name pkey, ref * pkref)
- {
- if (plist->int_keys) {
- long key;
-
- if (sscanf(pkey, "%ld", &key) != 1)
- return_error(e_rangecheck);
- make_int(pkref, key);
- return 0;
- } else
- return name_ref((const byte *)pkey, strlen(pkey), pkref, 0);
- }
-
- /* Fill in a gs_param_key_t from a name or int ref. */
- private int
- ref_to_key(const ref * pref, gs_param_key_t * key, iparam_list *plist)
- {
- if (r_has_type(pref, t_name)) {
- ref nref;
-
- name_string_ref(pref, &nref);
- key->data = nref.value.const_bytes;
- key->size = r_size(&nref);
- key->persistent = false; /* names may be freed */
- } else if (r_has_type(pref, t_integer)) {
- char istr[sizeof(long) * 8 / 3 + 2];
- int len;
- byte *buf;
-
- sprintf(istr, "%ld", pref->value.intval);
- len = strlen(istr);
- /* GC will take care of freeing this: */
- buf = gs_alloc_string(plist->memory, len, "ref_to_key");
- if (!buf)
- return_error(e_VMerror);
- key->data = buf;
- key->size = len;
- key->persistent = true;
- } else
- return_error(e_typecheck);
- return 0;
- }
-
- /* ================ Writing parameters to refs ================ */
-
- /* Forward references */
- private int array_new_indexed_plist_write(P4(dict_param_list *plist,
- ref *parray, const ref *pwanted,
- gs_ref_memory_t *imem));
-
- /* ---------------- Generic writing procedures ---------------- */
-
- private param_proc_begin_xmit_collection(ref_param_begin_write_collection);
- private param_proc_end_xmit_collection(ref_param_end_write_collection);
- private param_proc_xmit_typed(ref_param_write_typed);
- private param_proc_next_key(ref_param_get_next_key);
- private param_proc_requested(ref_param_requested);
- private const gs_param_list_procs ref_write_procs =
- {
- ref_param_write_typed,
- ref_param_begin_write_collection,
- ref_param_end_write_collection,
- ref_param_get_next_key,
- NULL, /* request */
- ref_param_requested
- };
- private int ref_array_param_requested(P5(const iparam_list *, gs_param_name,
- ref *, uint, client_name_t));
- private int ref_param_write(P3(iparam_list *, gs_param_name, const ref *));
- private int ref_param_write_string_value(P3(ref *, const gs_param_string *,
- gs_ref_memory_t *));
- private int ref_param_write_name_value(P2(ref *, const gs_param_string *));
- private int
- ref_param_make_int(ref *pe, const void *pvalue, uint i, gs_ref_memory_t *imem)
- {
- make_tav(pe, t_integer, imemory_new_mask(imem), intval,
- ((const gs_param_int_array *)pvalue)->data[i]);
- return 0;
- }
- private int
- ref_param_make_float(ref *pe, const void *pvalue, uint i, gs_ref_memory_t *imem)
- {
- make_tav(pe, t_real, imemory_new_mask(imem), realval,
- ((const gs_param_float_array *)pvalue)->data[i]);
- return 0;
- }
- private int
- ref_param_make_string(ref *pe, const void *pvalue, uint i, gs_ref_memory_t *imem)
- {
- return ref_param_write_string_value(pe,
- &((const gs_param_string_array *)pvalue)->data[i],
- imem);
- }
- private int
- ref_param_make_name(ref * pe, const void *pvalue, uint i, gs_ref_memory_t *imem)
- {
- return ref_param_write_name_value(pe,
- &((const gs_param_string_array *)pvalue)->data[i]);
- }
- private int
- ref_param_write_typed_array(gs_param_list * plist, gs_param_name pkey,
- void *pvalue, uint count,
- int (*make)(P4(ref *, const void *, uint,
- gs_ref_memory_t *)))
- {
- iparam_list *const iplist = (iparam_list *) plist;
- ref value;
- uint i;
- ref *pe;
- int code;
-
- if ((code = ref_array_param_requested(iplist, pkey, &value, count,
- "ref_param_write_typed_array")) <= 0)
- return code;
- for (i = 0, pe = value.value.refs; i < count; ++i, ++pe)
- if ((code = (*make) (pe, pvalue, i, iplist->ref_memory)) < 0)
- return code;
- return ref_param_write(iplist, pkey, &value);
- }
- private int
- ref_param_begin_write_collection(gs_param_list * plist, gs_param_name pkey,
- gs_param_dict * pvalue,
- gs_param_collection_type_t coll_type)
- {
- iparam_list *const iplist = (iparam_list *) plist;
- gs_ref_memory_t *imem = iplist->ref_memory;
- dict_param_list *dlist = (dict_param_list *)
- gs_alloc_bytes(plist->memory, size_of(dict_param_list),
- "ref_param_begin_write_collection");
- int code;
-
- if (dlist == 0)
- return_error(e_VMerror);
- if (coll_type != gs_param_collection_array) {
- ref dref;
-
- code = dict_alloc(imem, pvalue->size, &dref);
- if (code >= 0) {
- code = dict_param_list_write(dlist, &dref, NULL, imem);
- dlist->int_keys = coll_type == gs_param_collection_dict_int_keys;
- }
- } else {
- ref aref;
-
- code = gs_alloc_ref_array(imem, &aref, a_all, pvalue->size,
- "ref_param_begin_write_collection");
- if (code >= 0)
- code = array_new_indexed_plist_write(dlist, &aref, NULL, imem);
- }
- if (code < 0)
- gs_free_object(plist->memory, dlist, "ref_param_begin_write_collection");
- else
- pvalue->list = (gs_param_list *) dlist;
- return code;
- }
- private int
- ref_param_end_write_collection(gs_param_list * plist, gs_param_name pkey,
- gs_param_dict * pvalue)
- {
- iparam_list *const iplist = (iparam_list *) plist;
- int code = ref_param_write(iplist, pkey,
- &((dict_param_list *) pvalue->list)->dict);
-
- gs_free_object(plist->memory, pvalue->list, "ref_param_end_write_collection");
- return code;
- }
- private int
- ref_param_write_typed(gs_param_list * plist, gs_param_name pkey,
- gs_param_typed_value * pvalue)
- {
- iparam_list *const iplist = (iparam_list *) plist;
- ref value;
- int code = 0;
-
- switch (pvalue->type) {
- case gs_param_type_null:
- make_null(&value);
- break;
- case gs_param_type_bool:
- make_bool(&value, pvalue->value.b);
- break;
- case gs_param_type_int:
- make_int(&value, pvalue->value.i);
- break;
- case gs_param_type_long:
- make_int(&value, pvalue->value.l);
- break;
- case gs_param_type_float:
- make_real(&value, pvalue->value.f);
- break;
- case gs_param_type_string:
- if (!ref_param_requested(plist, pkey))
- return 0;
- code = ref_param_write_string_value(&value, &pvalue->value.s,
- iplist->ref_memory);
- break;
- case gs_param_type_name:
- if (!ref_param_requested(plist, pkey))
- return 0;
- code = ref_param_write_name_value(&value, &pvalue->value.n);
- break;
- case gs_param_type_int_array:
- return ref_param_write_typed_array(plist, pkey, &pvalue->value.ia,
- pvalue->value.ia.size,
- ref_param_make_int);
- case gs_param_type_float_array:
- return ref_param_write_typed_array(plist, pkey, &pvalue->value.fa,
- pvalue->value.fa.size,
- ref_param_make_float);
- case gs_param_type_string_array:
- return ref_param_write_typed_array(plist, pkey, &pvalue->value.sa,
- pvalue->value.sa.size,
- ref_param_make_string);
- case gs_param_type_name_array:
- return ref_param_write_typed_array(plist, pkey, &pvalue->value.na,
- pvalue->value.na.size,
- ref_param_make_name);
- case gs_param_type_dict:
- case gs_param_type_dict_int_keys:
- case gs_param_type_array:
- return ref_param_begin_write_collection(plist, pkey,
- &pvalue->value.d,
- (gs_param_collection_type_t)(pvalue->type - gs_param_type_dict));
- default:
- return_error(e_typecheck);
- }
- if (code < 0)
- return code;
- return ref_param_write(iplist, pkey, &value);
- }
-
- /* Check whether a given parameter was requested. */
- private int
- ref_param_requested(const gs_param_list * plist, gs_param_name pkey)
- {
- const iparam_list *const ciplist = (const iparam_list *)plist;
- ref kref;
- ref *ignore_value;
-
- if (!r_has_type(&ciplist->u.w.wanted, t_dictionary))
- return -1;
- if (ref_param_key(ciplist, pkey, &kref) < 0)
- return -1; /* catch it later */
- return (dict_find(&ciplist->u.w.wanted, &kref, &ignore_value) > 0);
- }
-
- /* Check whether an array parameter is wanted, and allocate it if so. */
- /* Return <0 on error, 0 if not wanted, 1 if wanted. */
- private int
- ref_array_param_requested(const iparam_list *iplist, gs_param_name pkey,
- ref *pvalue, uint size, client_name_t cname)
- {
- int code;
-
- if (!ref_param_requested((const gs_param_list *)iplist, pkey))
- return 0;
- code = gs_alloc_ref_array(iplist->ref_memory, pvalue, a_all, size, cname);
- return (code < 0 ? code : 1);
- }
-
- /* ---------------- Internal routines ---------------- */
-
- /* Prepare to write a string value. */
- private int
- ref_param_write_string_value(ref * pref, const gs_param_string * pvalue,
- gs_ref_memory_t *imem)
- {
- const byte *pdata = pvalue->data;
- uint n = pvalue->size;
-
- if (pvalue->persistent)
- make_const_string(pref, a_readonly | avm_foreign, n, pdata);
- else {
- byte *pstr = gs_alloc_string((gs_memory_t *)imem, n,
- "ref_param_write_string");
-
- if (pstr == 0)
- return_error(e_VMerror);
- memcpy(pstr, pdata, n);
- make_string(pref, a_readonly | imemory_space(imem), n, pstr);
- }
- return 0;
- }
-
- /* Prepare to write a name value. */
- private int
- ref_param_write_name_value(ref * pref, const gs_param_string * pvalue)
- {
- return name_ref(pvalue->data, pvalue->size, pref,
- (pvalue->persistent ? 0 : 1));
- }
-
- /* Generic routine for writing a ref parameter. */
- private int
- ref_param_write(iparam_list * plist, gs_param_name pkey, const ref * pvalue)
- {
- ref kref;
- int code;
-
- if (!ref_param_requested((gs_param_list *) plist, pkey))
- return 0;
- code = ref_param_key(plist, pkey, &kref);
- if (code < 0)
- return code;
- return (*plist->u.w.write) (plist, &kref, pvalue);
- }
-
- /* ---------------- Implementations ---------------- */
-
- /* Initialize for writing parameters. */
- private void
- ref_param_write_init(iparam_list * plist, const ref * pwanted,
- gs_ref_memory_t *imem)
- {
- gs_param_list_init((gs_param_list *)plist, &ref_write_procs,
- (gs_memory_t *)imem);
- plist->ref_memory = imem;
- if (pwanted == 0)
- make_null(&plist->u.w.wanted);
- else
- plist->u.w.wanted = *pwanted;
- plist->results = 0;
- plist->int_keys = false;
- }
-
- /* Implementation for getting parameters to a stack. */
- private int
- stack_param_write(iparam_list * plist, const ref * pkey, const ref * pvalue)
- {
- stack_param_list *const splist = (stack_param_list *) plist;
- ref_stack_t *pstack = splist->pstack;
- s_ptr p = pstack->p;
-
- if (pstack->top - p < 2) {
- int code = ref_stack_push(pstack, 2);
-
- if (code < 0)
- return code;
- *ref_stack_index(pstack, 1) = *pkey;
- p = pstack->p;
- } else {
- pstack->p = p += 2;
- p[-1] = *pkey;
- }
- *p = *pvalue;
- splist->count++;
- return 0;
- }
-
- /* Implementation for enumerating parameters on a stack */
- private int /* ret 0 ok, 1 if EOF, or -ve err */
- stack_param_enumerate(iparam_list * plist, gs_param_enumerator_t * penum,
- gs_param_key_t * key, ref_type * type)
- {
- int code;
- stack_param_list *const splist = (stack_param_list *) plist;
- long index = penum->intval;
- ref *stack_element;
-
- do {
- stack_element =
- ref_stack_index(splist->pstack, index + 1 + splist->skip);
- if (!stack_element)
- return 1;
- } while (index += 2, !r_has_type(stack_element, t_name));
- *type = r_type(stack_element);
- code = ref_to_key(stack_element, key, plist);
- penum->intval = index;
- return code;
- }
-
- int
- stack_param_list_write(stack_param_list * plist, ref_stack_t * pstack,
- const ref * pwanted, gs_ref_memory_t *imem)
- {
- plist->u.w.write = stack_param_write;
- ref_param_write_init((iparam_list *) plist, pwanted, imem);
- plist->enumerate = stack_param_enumerate;
- plist->pstack = pstack;
- plist->skip = 0;
- plist->count = 0;
- return 0;
- }
-
- /* Implementation for getting parameters to a dictionary. */
- private int
- dict_param_write(iparam_list * plist, const ref * pkey, const ref * pvalue)
- {
- int code =
- dict_put(&((dict_param_list *) plist)->dict, pkey, pvalue, NULL);
-
- return min(code, 0);
- }
-
- /* Implementation for enumerating parameters in a dictionary */
- private int /* ret 0 ok, 1 if EOF, or -ve err */
- dict_param_enumerate(iparam_list * plist, gs_param_enumerator_t * penum,
- gs_param_key_t * key, ref_type * type)
- {
- ref elt[2];
- int code;
- dict_param_list *const pdlist = (dict_param_list *) plist;
- int index =
- (penum->intval != 0 ? penum->intval : dict_first(&pdlist->dict));
-
- index = dict_next(&pdlist->dict, index, elt);
- if (index < 0)
- return 1;
- *type = r_type(&elt[1]);
- code = ref_to_key(&elt[0], key, plist);
- penum->intval = index;
- return code;
- }
-
- int
- dict_param_list_write(dict_param_list *plist, ref *pdict, const ref *pwanted,
- gs_ref_memory_t *imem)
- {
- check_dict_write(*pdict);
- plist->u.w.write = dict_param_write;
- plist->enumerate = dict_param_enumerate;
- ref_param_write_init((iparam_list *) plist, pwanted, imem);
- plist->dict = *pdict;
- return 0;
- }
-
- /* Implementation for getting parameters to an indexed array. */
- /* Note that this is now internal, since it only handles "new" arrays. */
- private int
- array_new_indexed_param_write(iparam_list * iplist, const ref * pkey,
- const ref * pvalue)
- {
- const ref *const arr = &((dict_param_list *)iplist)->dict;
- ref *eltp;
-
- if (!r_has_type(pkey, t_integer))
- return_error(e_typecheck);
- check_int_ltu(*pkey, r_size(arr));
- store_check_dest(arr, pvalue);
- eltp = arr->value.refs + pkey->value.intval;
- /* ref_assign_new(eltp, pvalue); */
- ref_assign(eltp, pvalue);
- r_set_attrs(eltp, imemory_new_mask(iplist->ref_memory));
- return 0;
- }
- private int
- array_new_indexed_plist_write(dict_param_list * plist, ref * parray,
- const ref * pwanted, gs_ref_memory_t *imem)
- {
- check_array(*parray);
- check_write(*parray);
- plist->u.w.write = array_new_indexed_param_write;
- ref_param_write_init((iparam_list *) plist, pwanted, imem);
- plist->dict = *parray;
- plist->int_keys = true;
- return 0;
- }
-
- /* ================ Reading refs to parameters ================ */
-
- /* ---------------- Generic reading procedures ---------------- */
-
- private param_proc_begin_xmit_collection(ref_param_begin_read_collection);
- private param_proc_end_xmit_collection(ref_param_end_read_collection);
- private param_proc_xmit_typed(ref_param_read_typed);
-
- /*private param_proc_next_key(ref_param_get_next_key); already dec'ld above */
- private param_proc_get_policy(ref_param_read_get_policy);
- private param_proc_signal_error(ref_param_read_signal_error);
- private param_proc_commit(ref_param_read_commit);
- private const gs_param_list_procs ref_read_procs =
- {
- ref_param_read_typed,
- ref_param_begin_read_collection,
- ref_param_end_read_collection,
- ref_param_get_next_key,
- NULL, /* request */
- NULL, /* requested */
- ref_param_read_get_policy,
- ref_param_read_signal_error,
- ref_param_read_commit
- };
- private int ref_param_read(P4(iparam_list *, gs_param_name,
- iparam_loc *, int));
- private int ref_param_read_string_value(P2(const iparam_loc *,
- gs_param_string *));
- private int ref_param_read_array(P3(iparam_list *, gs_param_name,
- iparam_loc *));
-
- #define iparam_note_error(loc, code)\
- gs_note_error(*(loc).presult = code)
- #define iparam_check_type(loc, typ)\
- if ( !r_has_type((loc).pvalue, typ) )\
- return iparam_note_error(loc, e_typecheck)
- #define iparam_check_read(loc)\
- if ( !r_has_attr((loc).pvalue, a_read) )\
- return iparam_note_error(loc, e_invalidaccess)
-
- private int
- ref_param_read_int_array(gs_param_list * plist, gs_param_name pkey,
- gs_param_int_array * pvalue)
- {
- iparam_list *const iplist = (iparam_list *) plist;
- iparam_loc loc;
- int code = ref_param_read_array(iplist, pkey, &loc);
- int *piv;
- uint size;
- long i;
-
- if (code != 0)
- return code;
- size = r_size(loc.pvalue);
- piv = (int *)gs_alloc_byte_array(plist->memory, size, sizeof(int),
- "ref_param_read_int_array");
-
- if (piv == 0)
- return_error(e_VMerror);
- for (i = 0; i < size; i++) {
- ref elt;
-
- array_get(loc.pvalue, i, &elt);
- if (!r_has_type(&elt, t_integer)) {
- code = gs_note_error(e_typecheck);
- break;
- }
- #if arch_sizeof_int < arch_sizeof_long
- if (elt.value.intval != (int)elt.value.intval) {
- code = gs_note_error(e_rangecheck);
- break;
- }
- #endif
- piv[i] = (int)elt.value.intval;
- }
- if (code < 0) {
- gs_free_object(plist->memory, piv, "ref_param_read_int_array");
- return (*loc.presult = code);
- }
- pvalue->data = piv;
- pvalue->size = size;
- pvalue->persistent = true;
- return 0;
- }
- private int
- ref_param_read_float_array(gs_param_list * plist, gs_param_name pkey,
- gs_param_float_array * pvalue)
- {
- iparam_list *const iplist = (iparam_list *) plist;
- iparam_loc loc;
- ref aref, elt;
- int code = ref_param_read_array(iplist, pkey, &loc);
- float *pfv;
- uint size;
- long i;
-
- if (code != 0)
- return code;
- size = r_size(loc.pvalue);
- pfv = (float *)gs_alloc_byte_array(plist->memory, size, sizeof(float),
- "ref_param_read_float_array");
-
- if (pfv == 0)
- return_error(e_VMerror);
- aref = *loc.pvalue;
- loc.pvalue = &elt;
- for (i = 0; code >= 0 && i < size; i++) {
- array_get(&aref, i, &elt);
- code = float_param(&elt, pfv + i);
- }
- if (code < 0) {
- gs_free_object(plist->memory, pfv, "ref_read_float_array_param");
- return (*loc.presult = code);
- }
- pvalue->data = pfv;
- pvalue->size = size;
- pvalue->persistent = true;
- return 0;
- }
- private int
- ref_param_read_string_array(gs_param_list * plist, gs_param_name pkey,
- gs_param_string_array * pvalue)
- {
- iparam_list *const iplist = (iparam_list *) plist;
- iparam_loc loc;
- ref aref;
- int code = ref_param_read_array(iplist, pkey, &loc);
- gs_param_string *psv;
- uint size;
- long i;
-
- if (code != 0)
- return code;
- size = r_size(loc.pvalue);
- psv = (gs_param_string *)
- gs_alloc_byte_array(plist->memory, size, sizeof(gs_param_string),
- "ref_param_read_string_array");
- if (psv == 0)
- return_error(e_VMerror);
- aref = *loc.pvalue;
- if (r_has_type(&aref, t_array)) {
- for (i = 0; code >= 0 && i < size; i++) {
- loc.pvalue = aref.value.refs + i;
- code = ref_param_read_string_value(&loc, psv + i);
- }
- } else {
- ref elt;
-
- loc.pvalue = &elt;
- for (i = 0; code >= 0 && i < size; i++) {
- array_get(&aref, i, &elt);
- code = ref_param_read_string_value(&loc, psv + i);
- }
- }
- if (code < 0) {
- gs_free_object(plist->memory, psv, "ref_param_read_string_array");
- return (*loc.presult = code);
- }
- pvalue->data = psv;
- pvalue->size = size;
- pvalue->persistent = true;
- return 0;
- }
- private int
- ref_param_begin_read_collection(gs_param_list * plist, gs_param_name pkey,
- gs_param_dict * pvalue,
- gs_param_collection_type_t coll_type)
- {
- iparam_list *const iplist = (iparam_list *) plist;
- iparam_loc loc;
- bool int_keys = coll_type != 0;
- int code = ref_param_read(iplist, pkey, &loc, -1);
- dict_param_list *dlist;
-
- if (code != 0)
- return code;
- dlist = (dict_param_list *)
- gs_alloc_bytes(plist->memory, size_of(dict_param_list),
- "ref_param_begin_read_collection");
- if (dlist == 0)
- return_error(e_VMerror);
- if (r_has_type(loc.pvalue, t_dictionary)) {
- code = dict_param_list_read(dlist, loc.pvalue, NULL, false,
- iplist->ref_memory);
- dlist->int_keys = int_keys;
- if (code >= 0)
- pvalue->size = dict_length(loc.pvalue);
- } else if (int_keys && r_is_array(loc.pvalue)) {
- code = array_indexed_param_list_read(dlist, loc.pvalue, NULL, false,
- iplist->ref_memory);
- if (code >= 0)
- pvalue->size = r_size(loc.pvalue);
- } else
- code = gs_note_error(e_typecheck);
- if (code < 0) {
- gs_free_object(plist->memory, dlist, "ref_param_begin_write_collection");
- return iparam_note_error(loc, code);
- }
- pvalue->list = (gs_param_list *) dlist;
- return 0;
- }
- private int
- ref_param_end_read_collection(gs_param_list * plist, gs_param_name pkey,
- gs_param_dict * pvalue)
- {
- iparam_list_release((dict_param_list *) pvalue->list);
- gs_free_object(plist->memory, pvalue->list,
- "ref_param_end_read_collection");
- return 0;
- }
- private int
- ref_param_read_typed(gs_param_list * plist, gs_param_name pkey,
- gs_param_typed_value * pvalue)
- {
- iparam_list *const iplist = (iparam_list *) plist;
- iparam_loc loc;
- ref elt;
- int code = ref_param_read(iplist, pkey, &loc, -1);
-
- if (code != 0)
- return code;
- switch (r_type(loc.pvalue)) {
- case t_array:
- case t_mixedarray:
- case t_shortarray:
- iparam_check_read(loc);
- if (r_size(loc.pvalue) <= 0) {
- /* 0-length array; can't get type info */
- pvalue->type = gs_param_type_array;
- pvalue->value.d.list = 0;
- pvalue->value.d.size = 0;
- return 0;
- }
- /*
- * We have to guess at the array type. First we guess based
- * on the type of the first element of the array. If that
- * fails, we try again with more general types.
- */
- array_get(loc.pvalue, 0, &elt);
- switch (r_type(&elt)) {
- case t_integer:
- pvalue->type = gs_param_type_int_array;
- code = ref_param_read_int_array(plist, pkey,
- &pvalue->value.ia);
- if (code != e_typecheck)
- return code;
- /* This might be a float array. Fall through. */
- *loc.presult = 0; /* reset error */
- case t_real:
- pvalue->type = gs_param_type_float_array;
- return ref_param_read_float_array(plist, pkey,
- &pvalue->value.fa);
- case t_string:
- pvalue->type = gs_param_type_string_array;
- return ref_param_read_string_array(plist, pkey,
- &pvalue->value.sa);
- case t_name:
- pvalue->type = gs_param_type_name_array;
- return ref_param_read_string_array(plist, pkey,
- &pvalue->value.na);
- default:
- break;
- }
- return gs_note_error(e_typecheck);
- case t_boolean:
- pvalue->type = gs_param_type_bool;
- pvalue->value.b = loc.pvalue->value.boolval;
- return 0;
- case t_dictionary:
- code = ref_param_begin_read_collection(plist, pkey,
- &pvalue->value.d, gs_param_collection_dict_any);
- if (code < 0)
- return code;
- pvalue->type = gs_param_type_dict;
-
- /* fixup new dict's type & int_keys field if contents have int keys */
- {
- gs_param_enumerator_t enumr;
- gs_param_key_t key;
- ref_type keytype;
-
- param_init_enumerator(&enumr);
- if (!(*((iparam_list *) plist)->enumerate)
- ((iparam_list *) pvalue->value.d.list, &enumr, &key, &keytype)
- && keytype == t_integer) {
- ((dict_param_list *) pvalue->value.d.list)->int_keys = 1;
- pvalue->type = gs_param_type_dict_int_keys;
- }
- }
- return 0;
- case t_integer:
- pvalue->type = gs_param_type_long;
- pvalue->value.l = loc.pvalue->value.intval;
- return 0;
- case t_name:
- pvalue->type = gs_param_type_name;
- return ref_param_read_string_value(&loc, &pvalue->value.n);
- case t_null:
- pvalue->type = gs_param_type_null;
- return 0;
- case t_real:
- pvalue->value.f = loc.pvalue->value.realval;
- pvalue->type = gs_param_type_float;
- return 0;
- case t_string:
- pvalue->type = gs_param_type_string;
- return ref_param_read_string_value(&loc, &pvalue->value.s);
- default:
- break;
- }
- return gs_note_error(e_typecheck);
- }
-
- private int
- ref_param_read_get_policy(gs_param_list * plist, gs_param_name pkey)
- {
- iparam_list *const iplist = (iparam_list *) plist;
- ref *pvalue;
-
- if (!(r_has_type(&iplist->u.r.policies, t_dictionary) &&
- dict_find_string(&iplist->u.r.policies, pkey, &pvalue) > 0 &&
- r_has_type(pvalue, t_integer))
- )
- return gs_param_policy_ignore;
- return (int)pvalue->value.intval;
- }
- private int
- ref_param_read_signal_error(gs_param_list * plist, gs_param_name pkey, int code)
- {
- iparam_list *const iplist = (iparam_list *) plist;
- iparam_loc loc;
-
- ref_param_read(iplist, pkey, &loc, -1); /* can't fail */
- *loc.presult = code;
- switch (ref_param_read_get_policy(plist, pkey)) {
- case gs_param_policy_ignore:
- return 0;
- case gs_param_policy_consult_user:
- return_error(e_configurationerror);
- default:
- return code;
- }
- }
- private int
- ref_param_read_commit(gs_param_list * plist)
- {
- iparam_list *const iplist = (iparam_list *) plist;
- int i;
- int ecode = 0;
-
- if (!iplist->u.r.require_all)
- return 0;
- /* Check to make sure that all parameters were actually read. */
- for (i = 0; i < iplist->count; ++i)
- if (iplist->results[i] == 0)
- iplist->results[i] = ecode = gs_note_error(e_undefined);
- return ecode;
- }
- private int
- ref_param_get_next_key(gs_param_list * plist, gs_param_enumerator_t * penum,
- gs_param_key_t * key)
- {
- ref_type keytype; /* result not needed here */
- iparam_list *const pilist = (iparam_list *) plist;
-
- return (*pilist->enumerate) (pilist, penum, key, &keytype);
- }
-
- /* ---------------- Internal routines ---------------- */
-
- /* Read a string value. */
- private int
- ref_param_read_string_value(const iparam_loc * ploc, gs_param_string * pvalue)
- {
- const ref *pref = ploc->pvalue;
-
- switch (r_type(pref)) {
- case t_name: {
- ref nref;
-
- name_string_ref(pref, &nref);
- pvalue->data = nref.value.const_bytes;
- pvalue->size = r_size(&nref);
- pvalue->persistent = true;
- }
- break;
- case t_string:
- iparam_check_read(*ploc);
- pvalue->data = pref->value.const_bytes;
- pvalue->size = r_size(pref);
- pvalue->persistent = false;
- break;
- default:
- return iparam_note_error(*ploc, e_typecheck);
- }
- return 0;
- }
-
- /* Read an array (or packed array) parameter. */
- private int
- ref_param_read_array(iparam_list * plist, gs_param_name pkey, iparam_loc * ploc)
- {
- int code = ref_param_read(plist, pkey, ploc, -1);
-
- if (code != 0)
- return code;
- if (!r_is_array(ploc->pvalue))
- return iparam_note_error(*ploc, e_typecheck);
- iparam_check_read(*ploc);
- return 0;
- }
-
- /* Generic routine for reading a ref parameter. */
- private int
- ref_param_read(iparam_list * plist, gs_param_name pkey, iparam_loc * ploc,
- int type)
- {
- iparam_list *const iplist = (iparam_list *) plist;
- ref kref;
- int code = ref_param_key(plist, pkey, &kref);
-
- if (code < 0)
- return code;
- code = (*plist->u.r.read) (iplist, &kref, ploc);
- if (code != 0)
- return code;
- if (type >= 0)
- iparam_check_type(*ploc, type);
- return 0;
- }
-
- /* ---------------- Implementations ---------------- */
-
- /* Implementation for putting parameters from an empty collection. */
- private int
- empty_param_read(iparam_list * plist, const ref * pkey, iparam_loc * ploc)
- {
- return 1;
- }
-
- /* Initialize for reading parameters. */
- private int
- ref_param_read_init(iparam_list * plist, uint count, const ref * ppolicies,
- bool require_all, gs_ref_memory_t *imem)
- {
- gs_param_list_init((gs_param_list *)plist, &ref_read_procs,
- (gs_memory_t *)imem);
- plist->ref_memory = imem;
- if (ppolicies == 0)
- make_null(&plist->u.r.policies);
- else
- plist->u.r.policies = *ppolicies;
- plist->u.r.require_all = require_all;
- plist->count = count;
- plist->results = (int *)
- gs_alloc_byte_array(plist->memory, count, sizeof(int),
- "ref_param_read_init");
-
- if (plist->results == 0)
- return_error(e_VMerror);
- memset(plist->results, 0, count * sizeof(int));
-
- plist->int_keys = false;
- return 0;
- }
-
- /* Implementation for putting parameters from an indexed array. */
- private int
- array_indexed_param_read(iparam_list * plist, const ref * pkey, iparam_loc * ploc)
- {
- ref *const arr = &((dict_param_list *) plist)->dict;
-
- check_type(*pkey, t_integer);
- if (pkey->value.intval < 0 || pkey->value.intval >= r_size(arr))
- return 1;
- ploc->pvalue = arr->value.refs + pkey->value.intval;
- ploc->presult = &plist->results[pkey->value.intval];
- *ploc->presult = 1;
- return 0;
- }
- int
- array_indexed_param_list_read(dict_param_list * plist, const ref * parray,
- const ref * ppolicies, bool require_all,
- gs_ref_memory_t *ref_memory)
- {
- iparam_list *const iplist = (iparam_list *) plist;
- int code;
-
- check_read_type(*parray, t_array);
- plist->u.r.read = array_indexed_param_read;
- plist->dict = *parray;
- code = ref_param_read_init(iplist, r_size(parray), ppolicies,
- require_all, ref_memory);
- plist->int_keys = true;
- return code;
- }
-
- /* Implementation for putting parameters from an array. */
- private int
- array_param_read(iparam_list * plist, const ref * pkey, iparam_loc * ploc)
- {
- ref *bot = ((array_param_list *) plist)->bot;
- ref *ptr = bot;
- ref *top = ((array_param_list *) plist)->top;
-
- for (; ptr < top; ptr += 2) {
- if (r_has_type(ptr, t_name) && name_eq(ptr, pkey)) {
- ploc->pvalue = ptr + 1;
- ploc->presult = &plist->results[ptr - bot];
- *ploc->presult = 1;
- return 0;
- }
- }
- return 1;
- }
-
- /* Implementation for enumerating parameters in an array */
- private int /* ret 0 ok, 1 if EOF, or -ve err */
- array_param_enumerate(iparam_list * plist, gs_param_enumerator_t * penum,
- gs_param_key_t * key, ref_type * type)
- {
- int index = penum->intval;
- ref *bot = ((array_param_list *) plist)->bot;
- ref *ptr = bot + index;
- ref *top = ((array_param_list *) plist)->top;
-
- for (; ptr < top; ptr += 2) {
- index += 2;
-
- if (r_has_type(ptr, t_name)) {
- int code = ref_to_key(ptr, key, plist);
-
- *type = r_type(ptr);
- penum->intval = index;
- return code;
- }
- }
- return 1;
- }
-
- int
- array_param_list_read(array_param_list * plist, ref * bot, uint count,
- const ref * ppolicies, bool require_all,
- gs_ref_memory_t *imem)
- {
- iparam_list *const iplist = (iparam_list *) plist;
-
- if (count & 1)
- return_error(e_rangecheck);
- plist->u.r.read = array_param_read;
- plist->enumerate = array_param_enumerate;
- plist->bot = bot;
- plist->top = bot + count;
- return ref_param_read_init(iplist, count, ppolicies, require_all, imem);
- }
-
- /* Implementation for putting parameters from a stack. */
- private int
- stack_param_read(iparam_list * plist, const ref * pkey, iparam_loc * ploc)
- {
- stack_param_list *const splist = (stack_param_list *) plist;
- ref_stack_t *pstack = splist->pstack;
-
- /* This implementation is slow, but it probably doesn't matter. */
- uint index = splist->skip + 1;
- uint count = splist->count;
-
- for (; count; count--, index += 2) {
- const ref *p = ref_stack_index(pstack, index);
-
- if (r_has_type(p, t_name) && name_eq(p, pkey)) {
- ploc->pvalue = ref_stack_index(pstack, index - 1);
- ploc->presult = &plist->results[count - 1];
- *ploc->presult = 1;
- return 0;
- }
- }
- return 1;
- }
- int
- stack_param_list_read(stack_param_list * plist, ref_stack_t * pstack,
- uint skip, const ref * ppolicies, bool require_all,
- gs_ref_memory_t *imem)
- {
- iparam_list *const iplist = (iparam_list *) plist;
- uint count = ref_stack_counttomark(pstack);
-
- if (count == 0)
- return_error(e_unmatchedmark);
- count -= skip + 1;
- if (count & 1)
- return_error(e_rangecheck);
- plist->u.r.read = stack_param_read;
- plist->enumerate = stack_param_enumerate;
- plist->pstack = pstack;
- plist->skip = skip;
- return ref_param_read_init(iplist, count >> 1, ppolicies, require_all, imem);
- }
-
- /* Implementation for putting parameters from a dictionary. */
- private int
- dict_param_read(iparam_list * plist, const ref * pkey, iparam_loc * ploc)
- {
- ref const *spdict = &((dict_param_list *) plist)->dict;
- int code = dict_find(spdict, pkey, &ploc->pvalue);
-
- if (code != 1)
- return 1;
- ploc->presult =
- &plist->results[dict_value_index(spdict, ploc->pvalue)];
- *ploc->presult = 1;
- return 0;
- }
- int
- dict_param_list_read(dict_param_list * plist, const ref * pdict,
- const ref * ppolicies, bool require_all,
- gs_ref_memory_t *imem)
- {
- iparam_list *const iplist = (iparam_list *) plist;
- uint count;
-
- if (pdict == 0) {
- plist->u.r.read = empty_param_read;
- count = 0;
- } else {
- check_dict_read(*pdict);
- plist->u.r.read = dict_param_read;
- plist->dict = *pdict;
- count = dict_max_index(pdict) + 1;
- }
- plist->enumerate = dict_param_enumerate;
- return ref_param_read_init(iplist, count, ppolicies, require_all, imem);
- }
-