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authorTor Andersson <tor.andersson@artifex.com>2013-06-19 15:29:44 +0200
committerTor Andersson <tor.andersson@artifex.com>2013-06-20 16:45:35 +0200
commit0a927854a10e1e6b9770a81e2e1d9f3093631757 (patch)
tree3d65d820d9fdba2d0d394d99c36290c851b78ca0 /pdf/pdf_object.c
parent1ae8f19179c5f0f8c6352b3c7855465325d5449a (diff)
downloadmupdf-0a927854a10e1e6b9770a81e2e1d9f3093631757.tar.xz
Rearrange source files.
Diffstat (limited to 'pdf/pdf_object.c')
-rw-r--r--pdf/pdf_object.c1576
1 files changed, 0 insertions, 1576 deletions
diff --git a/pdf/pdf_object.c b/pdf/pdf_object.c
deleted file mode 100644
index 8e5cf419..00000000
--- a/pdf/pdf_object.c
+++ /dev/null
@@ -1,1576 +0,0 @@
-#include "mupdf/pdf.h"
-
-typedef enum pdf_objkind_e
-{
- PDF_NULL = 0,
- PDF_BOOL = 'b',
- PDF_INT = 'i',
- PDF_REAL = 'f',
- PDF_STRING = 's',
- PDF_NAME = 'n',
- PDF_ARRAY = 'a',
- PDF_DICT = 'd',
- PDF_INDIRECT = 'r'
-} pdf_objkind;
-
-struct keyval
-{
- pdf_obj *k;
- pdf_obj *v;
-};
-
-struct pdf_obj_s
-{
- int refs;
- char kind;
- char marked;
- fz_context *ctx;
- union
- {
- int b;
- int i;
- float f;
- struct {
- unsigned short len;
- char buf[1];
- } s;
- char n[1];
- struct {
- int len;
- int cap;
- pdf_obj **items;
- } a;
- struct {
- char sorted;
- int len;
- int cap;
- struct keyval *items;
- } d;
- struct {
- int num;
- int gen;
- pdf_document *xref;
- } r;
- } u;
-};
-
-pdf_obj *
-pdf_new_null(fz_context *ctx)
-{
- pdf_obj *obj;
- obj = Memento_label(fz_malloc(ctx, sizeof(pdf_obj)), "pdf_obj(null)");
- obj->ctx = ctx;
- obj->refs = 1;
- obj->kind = PDF_NULL;
- obj->marked = 0;
- return obj;
-}
-
-pdf_obj *
-pdf_new_bool(fz_context *ctx, int b)
-{
- pdf_obj *obj;
- obj = Memento_label(fz_malloc(ctx, sizeof(pdf_obj)), "pdf_obj(bool)");
- obj->ctx = ctx;
- obj->refs = 1;
- obj->kind = PDF_BOOL;
- obj->marked = 0;
- obj->u.b = b;
- return obj;
-}
-
-pdf_obj *
-pdf_new_int(fz_context *ctx, int i)
-{
- pdf_obj *obj;
- obj = Memento_label(fz_malloc(ctx, sizeof(pdf_obj)), "pdf_obj(int)");
- obj->ctx = ctx;
- obj->refs = 1;
- obj->kind = PDF_INT;
- obj->marked = 0;
- obj->u.i = i;
- return obj;
-}
-
-pdf_obj *
-pdf_new_real(fz_context *ctx, float f)
-{
- pdf_obj *obj;
- obj = Memento_label(fz_malloc(ctx, sizeof(pdf_obj)), "pdf_obj(real)");
- obj->ctx = ctx;
- obj->refs = 1;
- obj->kind = PDF_REAL;
- obj->marked = 0;
- obj->u.f = f;
- return obj;
-}
-
-pdf_obj *
-pdf_new_string(fz_context *ctx, const char *str, int len)
-{
- pdf_obj *obj;
- obj = Memento_label(fz_malloc(ctx, offsetof(pdf_obj, u.s.buf) + len + 1), "pdf_obj(string)");
- obj->ctx = ctx;
- obj->refs = 1;
- obj->kind = PDF_STRING;
- obj->marked = 0;
- obj->u.s.len = len;
- memcpy(obj->u.s.buf, str, len);
- obj->u.s.buf[len] = '\0';
- return obj;
-}
-
-pdf_obj *
-pdf_new_name(fz_context *ctx, const char *str)
-{
- pdf_obj *obj;
- obj = Memento_label(fz_malloc(ctx, offsetof(pdf_obj, u.n) + strlen(str) + 1), "pdf_obj(name)");
- obj->ctx = ctx;
- obj->refs = 1;
- obj->kind = PDF_NAME;
- obj->marked = 0;
- strcpy(obj->u.n, str);
- return obj;
-}
-
-pdf_obj *
-pdf_new_indirect(fz_context *ctx, int num, int gen, void *xref)
-{
- pdf_obj *obj;
- obj = Memento_label(fz_malloc(ctx, sizeof(pdf_obj)), "pdf_obj(indirect)");
- obj->ctx = ctx;
- obj->refs = 1;
- obj->kind = PDF_INDIRECT;
- obj->marked = 0;
- obj->u.r.num = num;
- obj->u.r.gen = gen;
- obj->u.r.xref = xref;
- return obj;
-}
-
-pdf_obj *
-pdf_keep_obj(pdf_obj *obj)
-{
- if (obj)
- obj->refs ++;
- return obj;
-}
-
-int pdf_is_indirect(pdf_obj *obj)
-{
- return obj ? obj->kind == PDF_INDIRECT : 0;
-}
-
-#define RESOLVE(obj) \
- do { \
- if (obj && obj->kind == PDF_INDIRECT) \
- {\
- obj = pdf_resolve_indirect(obj); \
- } \
- } while (0)
-
-int pdf_is_null(pdf_obj *obj)
-{
- RESOLVE(obj);
- return obj ? obj->kind == PDF_NULL : 0;
-}
-
-int pdf_is_bool(pdf_obj *obj)
-{
- RESOLVE(obj);
- return obj ? obj->kind == PDF_BOOL : 0;
-}
-
-int pdf_is_int(pdf_obj *obj)
-{
- RESOLVE(obj);
- return obj ? obj->kind == PDF_INT : 0;
-}
-
-int pdf_is_real(pdf_obj *obj)
-{
- RESOLVE(obj);
- return obj ? obj->kind == PDF_REAL : 0;
-}
-
-int pdf_is_string(pdf_obj *obj)
-{
- RESOLVE(obj);
- return obj ? obj->kind == PDF_STRING : 0;
-}
-
-int pdf_is_name(pdf_obj *obj)
-{
- RESOLVE(obj);
- return obj ? obj->kind == PDF_NAME : 0;
-}
-
-int pdf_is_array(pdf_obj *obj)
-{
- RESOLVE(obj);
- return obj ? obj->kind == PDF_ARRAY : 0;
-}
-
-int pdf_is_dict(pdf_obj *obj)
-{
- RESOLVE(obj);
- return obj ? obj->kind == PDF_DICT : 0;
-}
-
-int pdf_to_bool(pdf_obj *obj)
-{
- RESOLVE(obj);
- if (!obj)
- return 0;
- return obj->kind == PDF_BOOL ? obj->u.b : 0;
-}
-
-int pdf_to_int(pdf_obj *obj)
-{
- RESOLVE(obj);
- if (!obj)
- return 0;
- if (obj->kind == PDF_INT)
- return obj->u.i;
- if (obj->kind == PDF_REAL)
- return (int)(obj->u.f + 0.5f); /* No roundf in MSVC */
- return 0;
-}
-
-float pdf_to_real(pdf_obj *obj)
-{
- RESOLVE(obj);
- if (!obj)
- return 0;
- if (obj->kind == PDF_REAL)
- return obj->u.f;
- if (obj->kind == PDF_INT)
- return obj->u.i;
- return 0;
-}
-
-char *pdf_to_name(pdf_obj *obj)
-{
- RESOLVE(obj);
- if (!obj || obj->kind != PDF_NAME)
- return "";
- return obj->u.n;
-}
-
-char *pdf_to_str_buf(pdf_obj *obj)
-{
- RESOLVE(obj);
- if (!obj || obj->kind != PDF_STRING)
- return "";
- return obj->u.s.buf;
-}
-
-int pdf_to_str_len(pdf_obj *obj)
-{
- RESOLVE(obj);
- if (!obj || obj->kind != PDF_STRING)
- return 0;
- return obj->u.s.len;
-}
-
-void pdf_set_int(pdf_obj *obj, int i)
-{
- if (!obj || obj->kind != PDF_INT)
- return;
- obj->u.i = i;
-}
-
-/* for use by pdf_crypt_obj_imp to decrypt AES string in place */
-void pdf_set_str_len(pdf_obj *obj, int newlen)
-{
- RESOLVE(obj);
- if (!obj || obj->kind != PDF_STRING)
- return; /* This should never happen */
- if (newlen > obj->u.s.len)
- return; /* This should never happen */
- obj->u.s.len = newlen;
-}
-
-pdf_obj *pdf_to_dict(pdf_obj *obj)
-{
- RESOLVE(obj);
- return (obj && obj->kind == PDF_DICT ? obj : NULL);
-}
-
-int pdf_to_num(pdf_obj *obj)
-{
- if (!obj || obj->kind != PDF_INDIRECT)
- return 0;
- return obj->u.r.num;
-}
-
-int pdf_to_gen(pdf_obj *obj)
-{
- if (!obj || obj->kind != PDF_INDIRECT)
- return 0;
- return obj->u.r.gen;
-}
-
-pdf_document *pdf_get_indirect_document(pdf_obj *obj)
-{
- if (!obj || obj->kind != PDF_INDIRECT)
- return NULL;
- return obj->u.r.xref;
-}
-
-int
-pdf_objcmp(pdf_obj *a, pdf_obj *b)
-{
- int i;
-
- if (a == b)
- return 0;
-
- if (!a || !b)
- return 1;
-
- if (a->kind != b->kind)
- return 1;
-
- switch (a->kind)
- {
- case PDF_NULL:
- return 0;
-
- case PDF_BOOL:
- return a->u.b - b->u.b;
-
- case PDF_INT:
- return a->u.i - b->u.i;
-
- case PDF_REAL:
- if (a->u.f < b->u.f)
- return -1;
- if (a->u.f > b->u.f)
- return 1;
- return 0;
-
- case PDF_STRING:
- if (a->u.s.len < b->u.s.len)
- {
- if (memcmp(a->u.s.buf, b->u.s.buf, a->u.s.len) <= 0)
- return -1;
- return 1;
- }
- if (a->u.s.len > b->u.s.len)
- {
- if (memcmp(a->u.s.buf, b->u.s.buf, b->u.s.len) >= 0)
- return 1;
- return -1;
- }
- return memcmp(a->u.s.buf, b->u.s.buf, a->u.s.len);
-
- case PDF_NAME:
- return strcmp(a->u.n, b->u.n);
-
- case PDF_INDIRECT:
- if (a->u.r.num == b->u.r.num)
- return a->u.r.gen - b->u.r.gen;
- return a->u.r.num - b->u.r.num;
-
- case PDF_ARRAY:
- if (a->u.a.len != b->u.a.len)
- return a->u.a.len - b->u.a.len;
- for (i = 0; i < a->u.a.len; i++)
- if (pdf_objcmp(a->u.a.items[i], b->u.a.items[i]))
- return 1;
- return 0;
-
- case PDF_DICT:
- if (a->u.d.len != b->u.d.len)
- return a->u.d.len - b->u.d.len;
- for (i = 0; i < a->u.d.len; i++)
- {
- if (pdf_objcmp(a->u.d.items[i].k, b->u.d.items[i].k))
- return 1;
- if (pdf_objcmp(a->u.d.items[i].v, b->u.d.items[i].v))
- return 1;
- }
- return 0;
-
- }
- return 1;
-}
-
-static char *
-pdf_objkindstr(pdf_obj *obj)
-{
- if (!obj)
- return "<NULL>";
- switch (obj->kind)
- {
- case PDF_NULL: return "null";
- case PDF_BOOL: return "boolean";
- case PDF_INT: return "integer";
- case PDF_REAL: return "real";
- case PDF_STRING: return "string";
- case PDF_NAME: return "name";
- case PDF_ARRAY: return "array";
- case PDF_DICT: return "dictionary";
- case PDF_INDIRECT: return "reference";
- }
- return "<unknown>";
-}
-
-pdf_obj *
-pdf_new_array(fz_context *ctx, int initialcap)
-{
- pdf_obj *obj;
- int i;
-
- obj = Memento_label(fz_malloc(ctx, sizeof(pdf_obj)), "pdf_obj(array)");
- obj->ctx = ctx;
- obj->refs = 1;
- obj->kind = PDF_ARRAY;
- obj->marked = 0;
-
- obj->u.a.len = 0;
- obj->u.a.cap = initialcap > 1 ? initialcap : 6;
-
- fz_try(ctx)
- {
- obj->u.a.items = Memento_label(fz_malloc_array(ctx, obj->u.a.cap, sizeof(pdf_obj*)), "pdf_obj(array items)");
- }
- fz_catch(ctx)
- {
- fz_free(ctx, obj);
- fz_rethrow(ctx);
- }
- for (i = 0; i < obj->u.a.cap; i++)
- obj->u.a.items[i] = NULL;
-
- return obj;
-}
-
-static void
-pdf_array_grow(pdf_obj *obj)
-{
- int i;
- int new_cap = (obj->u.a.cap * 3) / 2;
-
- obj->u.a.items = fz_resize_array(obj->ctx, obj->u.a.items, new_cap, sizeof(pdf_obj*));
- obj->u.a.cap = new_cap;
-
- for (i = obj->u.a.len ; i < obj->u.a.cap; i++)
- obj->u.a.items[i] = NULL;
-}
-
-pdf_obj *
-pdf_copy_array(fz_context *ctx, pdf_obj *obj)
-{
- pdf_obj *arr;
- int i;
- int n;
-
- RESOLVE(obj);
- if (!obj)
- return NULL; /* Can't warn :( */
- if (obj->kind != PDF_ARRAY)
- fz_warn(ctx, "assert: not an array (%s)", pdf_objkindstr(obj));
-
- arr = pdf_new_array(ctx, pdf_array_len(obj));
- n = pdf_array_len(obj);
- for (i = 0; i < n; i++)
- pdf_array_push(arr, pdf_array_get(obj, i));
-
- return arr;
-}
-
-int
-pdf_array_len(pdf_obj *obj)
-{
- RESOLVE(obj);
- if (!obj || obj->kind != PDF_ARRAY)
- return 0;
- return obj->u.a.len;
-}
-
-pdf_obj *
-pdf_array_get(pdf_obj *obj, int i)
-{
- RESOLVE(obj);
-
- if (!obj || obj->kind != PDF_ARRAY)
- return NULL;
-
- if (i < 0 || i >= obj->u.a.len)
- return NULL;
-
- return obj->u.a.items[i];
-}
-
-void
-pdf_array_put(pdf_obj *obj, int i, pdf_obj *item)
-{
- RESOLVE(obj);
-
- if (!obj)
- return; /* Can't warn :( */
- if (obj->kind != PDF_ARRAY)
- fz_warn(obj->ctx, "assert: not an array (%s)", pdf_objkindstr(obj));
- else if (i < 0)
- fz_warn(obj->ctx, "assert: index %d < 0", i);
- else if (i >= obj->u.a.len)
- fz_warn(obj->ctx, "assert: index %d > length %d", i, obj->u.a.len);
- else
- {
- pdf_drop_obj(obj->u.a.items[i]);
- obj->u.a.items[i] = pdf_keep_obj(item);
- }
-}
-
-void
-pdf_array_push(pdf_obj *obj, pdf_obj *item)
-{
- RESOLVE(obj);
-
- if (!obj)
- return; /* Can't warn :( */
- if (obj->kind != PDF_ARRAY)
- fz_warn(obj->ctx, "assert: not an array (%s)", pdf_objkindstr(obj));
- else
- {
- if (obj->u.a.len + 1 > obj->u.a.cap)
- pdf_array_grow(obj);
- obj->u.a.items[obj->u.a.len] = pdf_keep_obj(item);
- obj->u.a.len++;
- }
-}
-
-void
-pdf_array_push_drop(pdf_obj *obj, pdf_obj *item)
-{
- fz_context *ctx = obj->ctx;
-
- fz_try(ctx)
- {
- pdf_array_push(obj, item);
- }
- fz_always(ctx)
- {
- pdf_drop_obj(item);
- }
- fz_catch(ctx)
- {
- fz_rethrow(ctx);
- }
-}
-
-void
-pdf_array_insert(pdf_obj *obj, pdf_obj *item)
-{
- RESOLVE(obj);
-
- if (!obj)
- return; /* Can't warn :( */
- if (obj->kind != PDF_ARRAY)
- fz_warn(obj->ctx, "assert: not an array (%s)", pdf_objkindstr(obj));
- else
- {
- if (obj->u.a.len + 1 > obj->u.a.cap)
- pdf_array_grow(obj);
- memmove(obj->u.a.items + 1, obj->u.a.items, obj->u.a.len * sizeof(pdf_obj*));
- obj->u.a.items[0] = pdf_keep_obj(item);
- obj->u.a.len++;
- }
-}
-
-int
-pdf_array_contains(pdf_obj *arr, pdf_obj *obj)
-{
- int i, len;
-
- len = pdf_array_len(arr);
- for (i = 0; i < len; i++)
- if (!pdf_objcmp(pdf_array_get(arr, i), obj))
- return 1;
-
- return 0;
-}
-
-pdf_obj *pdf_new_rect(fz_context *ctx, const fz_rect *rect)
-{
- pdf_obj *arr = NULL;
- pdf_obj *item = NULL;
-
- fz_var(arr);
- fz_var(item);
- fz_try(ctx)
- {
- arr = pdf_new_array(ctx, 4);
-
- item = pdf_new_real(ctx, rect->x0);
- pdf_array_push(arr, item);
- pdf_drop_obj(item);
- item = NULL;
-
- item = pdf_new_real(ctx, rect->y0);
- pdf_array_push(arr, item);
- pdf_drop_obj(item);
- item = NULL;
-
- item = pdf_new_real(ctx, rect->x1);
- pdf_array_push(arr, item);
- pdf_drop_obj(item);
- item = NULL;
-
- item = pdf_new_real(ctx, rect->y1);
- pdf_array_push(arr, item);
- pdf_drop_obj(item);
- item = NULL;
- }
- fz_catch(ctx)
- {
- pdf_drop_obj(item);
- pdf_drop_obj(arr);
- fz_rethrow(ctx);
- }
-
- return arr;
-}
-
-pdf_obj *pdf_new_matrix(fz_context *ctx, const fz_matrix *mtx)
-{
- pdf_obj *arr = NULL;
- pdf_obj *item = NULL;
-
- fz_var(arr);
- fz_var(item);
- fz_try(ctx)
- {
- arr = pdf_new_array(ctx, 6);
-
- item = pdf_new_real(ctx, mtx->a);
- pdf_array_push(arr, item);
- pdf_drop_obj(item);
- item = NULL;
-
- item = pdf_new_real(ctx, mtx->b);
- pdf_array_push(arr, item);
- pdf_drop_obj(item);
- item = NULL;
-
- item = pdf_new_real(ctx, mtx->c);
- pdf_array_push(arr, item);
- pdf_drop_obj(item);
- item = NULL;
-
- item = pdf_new_real(ctx, mtx->d);
- pdf_array_push(arr, item);
- pdf_drop_obj(item);
- item = NULL;
-
- item = pdf_new_real(ctx, mtx->e);
- pdf_array_push(arr, item);
- pdf_drop_obj(item);
- item = NULL;
-
- item = pdf_new_real(ctx, mtx->f);
- pdf_array_push(arr, item);
- pdf_drop_obj(item);
- item = NULL;
- }
- fz_catch(ctx)
- {
- pdf_drop_obj(item);
- pdf_drop_obj(arr);
- fz_rethrow(ctx);
- }
-
- return arr;
-}
-
-/* dicts may only have names as keys! */
-
-static int keyvalcmp(const void *ap, const void *bp)
-{
- const struct keyval *a = ap;
- const struct keyval *b = bp;
- return strcmp(pdf_to_name(a->k), pdf_to_name(b->k));
-}
-
-pdf_obj *
-pdf_new_dict(fz_context *ctx, int initialcap)
-{
- pdf_obj *obj;
- int i;
-
- obj = Memento_label(fz_malloc(ctx, sizeof(pdf_obj)), "pdf_obj(dict)");
- obj->ctx = ctx;
- obj->refs = 1;
- obj->kind = PDF_DICT;
- obj->marked = 0;
-
- obj->u.d.sorted = 0;
- obj->u.d.len = 0;
- obj->u.d.cap = initialcap > 1 ? initialcap : 10;
-
- fz_try(ctx)
- {
- obj->u.d.items = Memento_label(fz_malloc_array(ctx, obj->u.d.cap, sizeof(struct keyval)), "pdf_obj(dict items)");
- }
- fz_catch(ctx)
- {
- fz_free(ctx, obj);
- fz_rethrow(ctx);
- }
- for (i = 0; i < obj->u.d.cap; i++)
- {
- obj->u.d.items[i].k = NULL;
- obj->u.d.items[i].v = NULL;
- }
-
- return obj;
-}
-
-static void
-pdf_dict_grow(pdf_obj *obj)
-{
- int i;
- int new_cap = (obj->u.d.cap * 3) / 2;
-
- obj->u.d.items = fz_resize_array(obj->ctx, obj->u.d.items, new_cap, sizeof(struct keyval));
- obj->u.d.cap = new_cap;
-
- for (i = obj->u.d.len; i < obj->u.d.cap; i++)
- {
- obj->u.d.items[i].k = NULL;
- obj->u.d.items[i].v = NULL;
- }
-}
-
-pdf_obj *
-pdf_copy_dict(fz_context *ctx, pdf_obj *obj)
-{
- pdf_obj *dict;
- int i, n;
-
- RESOLVE(obj);
- if (!obj)
- return NULL; /* Can't warn :( */
- if (obj->kind != PDF_DICT)
- fz_warn(ctx, "assert: not a dict (%s)", pdf_objkindstr(obj));
-
- n = pdf_dict_len(obj);
- dict = pdf_new_dict(ctx, n);
- for (i = 0; i < n; i++)
- pdf_dict_put(dict, pdf_dict_get_key(obj, i), pdf_dict_get_val(obj, i));
-
- return dict;
-}
-
-int
-pdf_dict_len(pdf_obj *obj)
-{
- RESOLVE(obj);
- if (!obj || obj->kind != PDF_DICT)
- return 0;
- return obj->u.d.len;
-}
-
-pdf_obj *
-pdf_dict_get_key(pdf_obj *obj, int i)
-{
- RESOLVE(obj);
- if (!obj || obj->kind != PDF_DICT)
- return NULL;
-
- if (i < 0 || i >= obj->u.d.len)
- return NULL;
-
- return obj->u.d.items[i].k;
-}
-
-pdf_obj *
-pdf_dict_get_val(pdf_obj *obj, int i)
-{
- RESOLVE(obj);
- if (!obj || obj->kind != PDF_DICT)
- return NULL;
-
- if (i < 0 || i >= obj->u.d.len)
- return NULL;
-
- return obj->u.d.items[i].v;
-}
-
-static int
-pdf_dict_finds(pdf_obj *obj, const char *key, int *location)
-{
- if (obj->u.d.sorted && obj->u.d.len > 0)
- {
- int l = 0;
- int r = obj->u.d.len - 1;
-
- if (strcmp(pdf_to_name(obj->u.d.items[r].k), key) < 0)
- {
- if (location)
- *location = r + 1;
- return -1;
- }
-
- while (l <= r)
- {
- int m = (l + r) >> 1;
- int c = -strcmp(pdf_to_name(obj->u.d.items[m].k), key);
- if (c < 0)
- r = m - 1;
- else if (c > 0)
- l = m + 1;
- else
- return m;
-
- if (location)
- *location = l;
- }
- }
-
- else
- {
- int i;
- for (i = 0; i < obj->u.d.len; i++)
- if (strcmp(pdf_to_name(obj->u.d.items[i].k), key) == 0)
- return i;
-
- if (location)
- *location = obj->u.d.len;
- }
-
- return -1;
-}
-
-pdf_obj *
-pdf_dict_gets(pdf_obj *obj, const char *key)
-{
- int i;
-
- RESOLVE(obj);
- if (!obj || obj->kind != PDF_DICT)
- return NULL;
-
- i = pdf_dict_finds(obj, key, NULL);
- if (i >= 0)
- return obj->u.d.items[i].v;
-
- return NULL;
-}
-
-pdf_obj *
-pdf_dict_getp(pdf_obj *obj, const char *keys)
-{
- char buf[256];
- char *k, *e;
-
- if (strlen(keys)+1 > 256)
- fz_throw(obj->ctx, FZ_ERROR_GENERIC, "buffer overflow in pdf_dict_getp");
-
- strcpy(buf, keys);
-
- e = buf;
- while (*e && obj)
- {
- k = e;
- while (*e != '/' && *e != '\0')
- e++;
-
- if (*e == '/')
- {
- *e = '\0';
- e++;
- }
-
- obj = pdf_dict_gets(obj, k);
- }
-
- return obj;
-}
-
-pdf_obj *
-pdf_dict_get(pdf_obj *obj, pdf_obj *key)
-{
- if (!key || key->kind != PDF_NAME)
- return NULL;
- return pdf_dict_gets(obj, pdf_to_name(key));
-}
-
-pdf_obj *
-pdf_dict_getsa(pdf_obj *obj, const char *key, const char *abbrev)
-{
- pdf_obj *v;
- v = pdf_dict_gets(obj, key);
- if (v)
- return v;
- return pdf_dict_gets(obj, abbrev);
-}
-
-void
-pdf_dict_put(pdf_obj *obj, pdf_obj *key, pdf_obj *val)
-{
- int location;
- char *s;
- int i;
-
- RESOLVE(obj);
- if (!obj)
- return; /* Can't warn :( */
- if (obj->kind != PDF_DICT)
- {
- fz_warn(obj->ctx, "assert: not a dict (%s)", pdf_objkindstr(obj));
- return;
- }
-
- RESOLVE(key);
- if (!key || key->kind != PDF_NAME)
- {
- fz_warn(obj->ctx, "assert: key is not a name (%s)", pdf_objkindstr(obj));
- return;
- }
- else
- s = pdf_to_name(key);
-
- if (!val)
- {
- fz_warn(obj->ctx, "assert: val does not exist for key (%s)", s);
- return;
- }
-
- if (obj->u.d.len > 100 && !obj->u.d.sorted)
- pdf_sort_dict(obj);
-
- i = pdf_dict_finds(obj, s, &location);
- if (i >= 0 && i < obj->u.d.len)
- {
- if (obj->u.d.items[i].v != val)
- {
- pdf_drop_obj(obj->u.d.items[i].v);
- obj->u.d.items[i].v = pdf_keep_obj(val);
- }
- }
- else
- {
- if (obj->u.d.len + 1 > obj->u.d.cap)
- pdf_dict_grow(obj);
-
- i = location;
- if (obj->u.d.sorted && obj->u.d.len > 0)
- memmove(&obj->u.d.items[i + 1],
- &obj->u.d.items[i],
- (obj->u.d.len - i) * sizeof(struct keyval));
-
- obj->u.d.items[i].k = pdf_keep_obj(key);
- obj->u.d.items[i].v = pdf_keep_obj(val);
- obj->u.d.len ++;
- }
-}
-
-void
-pdf_dict_puts(pdf_obj *obj, const char *key, pdf_obj *val)
-{
- fz_context *ctx = obj->ctx;
- pdf_obj *keyobj = pdf_new_name(ctx, key);
-
- fz_try(ctx)
- {
- pdf_dict_put(obj, keyobj, val);
- }
- fz_always(ctx)
- {
- pdf_drop_obj(keyobj);
- }
- fz_catch(ctx)
- {
- fz_rethrow(ctx);
- }
-}
-
-void
-pdf_dict_puts_drop(pdf_obj *obj, const char *key, pdf_obj *val)
-{
- fz_context *ctx = obj->ctx;
- pdf_obj *keyobj = NULL;
-
- fz_var(keyobj);
-
- fz_try(ctx)
- {
- keyobj = pdf_new_name(ctx, key);
- pdf_dict_put(obj, keyobj, val);
- }
- fz_always(ctx)
- {
- pdf_drop_obj(keyobj);
- pdf_drop_obj(val);
- }
- fz_catch(ctx)
- {
- fz_rethrow(ctx);
- }
-}
-
-void
-pdf_dict_putp(pdf_obj *obj, const char *keys, pdf_obj *val)
-{
- fz_context *ctx = obj->ctx;
- char buf[256];
- char *k, *e;
- pdf_obj *cobj = NULL;
-
- if (strlen(keys)+1 > 256)
- fz_throw(obj->ctx, FZ_ERROR_GENERIC, "buffer overflow in pdf_dict_getp");
-
- strcpy(buf, keys);
-
- e = buf;
- while (*e)
- {
- k = e;
- while (*e != '/' && *e != '\0')
- e++;
-
- if (*e == '/')
- {
- *e = '\0';
- e++;
- }
-
- if (*e)
- {
- /* Not the last key in the key path. Create subdict if not already there. */
- cobj = pdf_dict_gets(obj, k);
- if (cobj == NULL)
- {
- cobj = pdf_new_dict(ctx, 1);
- fz_try(ctx)
- {
- pdf_dict_puts(obj, k, cobj);
- }
- fz_always(ctx)
- {
- pdf_drop_obj(cobj);
- }
- fz_catch(ctx)
- {
- fz_rethrow(ctx);
- }
- }
- /* Move to subdict */
- obj = cobj;
- }
- else
- {
- /* Last key. Use it to store the value */
- /* Use val = NULL to request delete */
- if (val)
- pdf_dict_puts(obj, k, val);
- else
- pdf_dict_dels(obj, k);
- }
- }
-}
-
-void
-pdf_dict_putp_drop(pdf_obj *obj, const char *keys, pdf_obj *val)
-{
- fz_context *ctx = obj->ctx;
-
- fz_try(ctx)
- {
- pdf_dict_putp(obj, keys, val);
- }
- fz_always(ctx)
- {
- pdf_drop_obj(val);
- }
- fz_catch(ctx)
- {
- fz_rethrow(ctx);
- }
-}
-
-void
-pdf_dict_dels(pdf_obj *obj, const char *key)
-{
- RESOLVE(obj);
-
- if (!obj)
- return; /* Can't warn :( */
- if (obj->kind != PDF_DICT)
- fz_warn(obj->ctx, "assert: not a dict (%s)", pdf_objkindstr(obj));
- else
- {
- int i = pdf_dict_finds(obj, key, NULL);
- if (i >= 0)
- {
- pdf_drop_obj(obj->u.d.items[i].k);
- pdf_drop_obj(obj->u.d.items[i].v);
- obj->u.d.sorted = 0;
- obj->u.d.items[i] = obj->u.d.items[obj->u.d.len-1];
- obj->u.d.len --;
- }
- }
-}
-
-void
-pdf_dict_del(pdf_obj *obj, pdf_obj *key)
-{
- RESOLVE(key);
- if (!key || key->kind != PDF_NAME)
- fz_warn(obj->ctx, "assert: key is not a name (%s)", pdf_objkindstr(obj));
- else
- pdf_dict_dels(obj, key->u.n);
-}
-
-void
-pdf_sort_dict(pdf_obj *obj)
-{
- RESOLVE(obj);
- if (!obj || obj->kind != PDF_DICT)
- return;
- if (!obj->u.d.sorted)
- {
- qsort(obj->u.d.items, obj->u.d.len, sizeof(struct keyval), keyvalcmp);
- obj->u.d.sorted = 1;
- }
-}
-
-int
-pdf_obj_marked(pdf_obj *obj)
-{
- RESOLVE(obj);
- if (!obj)
- return 0;
- return obj->marked;
-}
-
-int
-pdf_obj_mark(pdf_obj *obj)
-{
- int marked;
- RESOLVE(obj);
- if (!obj)
- return 0;
- marked = obj->marked;
- obj->marked = 1;
- return marked;
-}
-
-void
-pdf_obj_unmark(pdf_obj *obj)
-{
- RESOLVE(obj);
- if (!obj)
- return;
- obj->marked = 0;
-}
-
-static void
-pdf_free_array(pdf_obj *obj)
-{
- int i;
-
- for (i = 0; i < obj->u.a.len; i++)
- pdf_drop_obj(obj->u.a.items[i]);
-
- fz_free(obj->ctx, obj->u.a.items);
- fz_free(obj->ctx, obj);
-}
-
-static void
-pdf_free_dict(pdf_obj *obj)
-{
- int i;
-
- for (i = 0; i < obj->u.d.len; i++) {
- pdf_drop_obj(obj->u.d.items[i].k);
- pdf_drop_obj(obj->u.d.items[i].v);
- }
-
- fz_free(obj->ctx, obj->u.d.items);
- fz_free(obj->ctx, obj);
-}
-
-void
-pdf_drop_obj(pdf_obj *obj)
-{
- if (!obj)
- return;
- if (--obj->refs)
- return;
- if (obj->kind == PDF_ARRAY)
- pdf_free_array(obj);
- else if (obj->kind == PDF_DICT)
- pdf_free_dict(obj);
- else
- fz_free(obj->ctx, obj);
-}
-
-pdf_obj *pdf_new_obj_from_str(fz_context *ctx, const char *src)
-{
- pdf_obj *result;
- pdf_lexbuf lexbuf;
- fz_stream *stream = fz_open_memory(ctx, (unsigned char *)src, strlen(src));
-
- pdf_lexbuf_init(ctx, &lexbuf, PDF_LEXBUF_SMALL);
- fz_try(ctx)
- {
- result = pdf_parse_stm_obj(NULL, stream, &lexbuf);
- }
- fz_always(ctx)
- {
- pdf_lexbuf_fin(&lexbuf);
- fz_close(stream);
- }
- fz_catch(ctx)
- {
- /* FIXME: TryLater */
- return NULL;
- }
-
- return result;
-}
-
-/* Pretty printing objects */
-
-struct fmt
-{
- char *buf;
- int cap;
- int len;
- int indent;
- int tight;
- int col;
- int sep;
- int last;
-};
-
-static void fmt_obj(struct fmt *fmt, pdf_obj *obj);
-
-static inline int iswhite(int ch)
-{
- return
- ch == '\000' ||
- ch == '\011' ||
- ch == '\012' ||
- ch == '\014' ||
- ch == '\015' ||
- ch == '\040';
-}
-
-static inline int isdelim(int ch)
-{
- return
- ch == '(' || ch == ')' ||
- ch == '<' || ch == '>' ||
- ch == '[' || ch == ']' ||
- ch == '{' || ch == '}' ||
- ch == '/' ||
- ch == '%';
-}
-
-static inline void fmt_putc(struct fmt *fmt, int c)
-{
- if (fmt->sep && !isdelim(fmt->last) && !isdelim(c)) {
- fmt->sep = 0;
- fmt_putc(fmt, ' ');
- }
- fmt->sep = 0;
-
- if (fmt->buf && fmt->len < fmt->cap)
- fmt->buf[fmt->len] = c;
-
- if (c == '\n')
- fmt->col = 0;
- else
- fmt->col ++;
-
- fmt->len ++;
-
- fmt->last = c;
-}
-
-static inline void fmt_indent(struct fmt *fmt)
-{
- int i = fmt->indent;
- while (i--) {
- fmt_putc(fmt, ' ');
- fmt_putc(fmt, ' ');
- }
-}
-
-static inline void fmt_puts(struct fmt *fmt, char *s)
-{
- while (*s)
- fmt_putc(fmt, *s++);
-}
-
-static inline void fmt_sep(struct fmt *fmt)
-{
- fmt->sep = 1;
-}
-
-static void fmt_str(struct fmt *fmt, pdf_obj *obj)
-{
- char *s = pdf_to_str_buf(obj);
- int n = pdf_to_str_len(obj);
- int i, c;
-
- fmt_putc(fmt, '(');
- for (i = 0; i < n; i++)
- {
- c = (unsigned char)s[i];
- if (c == '\n')
- fmt_puts(fmt, "\\n");
- else if (c == '\r')
- fmt_puts(fmt, "\\r");
- else if (c == '\t')
- fmt_puts(fmt, "\\t");
- else if (c == '\b')
- fmt_puts(fmt, "\\b");
- else if (c == '\f')
- fmt_puts(fmt, "\\f");
- else if (c == '(')
- fmt_puts(fmt, "\\(");
- else if (c == ')')
- fmt_puts(fmt, "\\)");
- else if (c == '\\')
- fmt_puts(fmt, "\\\\");
- else if (c < 32 || c >= 127) {
- char buf[16];
- fmt_putc(fmt, '\\');
- sprintf(buf, "%03o", c);
- fmt_puts(fmt, buf);
- }
- else
- fmt_putc(fmt, c);
- }
- fmt_putc(fmt, ')');
-}
-
-static void fmt_hex(struct fmt *fmt, pdf_obj *obj)
-{
- char *s = pdf_to_str_buf(obj);
- int n = pdf_to_str_len(obj);
- int i, b, c;
-
- fmt_putc(fmt, '<');
- for (i = 0; i < n; i++) {
- b = (unsigned char) s[i];
- c = (b >> 4) & 0x0f;
- fmt_putc(fmt, c < 0xA ? c + '0' : c + 'A' - 0xA);
- c = (b) & 0x0f;
- fmt_putc(fmt, c < 0xA ? c + '0' : c + 'A' - 0xA);
- }
- fmt_putc(fmt, '>');
-}
-
-static void fmt_name(struct fmt *fmt, pdf_obj *obj)
-{
- unsigned char *s = (unsigned char *) pdf_to_name(obj);
- int i, c;
-
- fmt_putc(fmt, '/');
-
- for (i = 0; s[i]; i++)
- {
- if (isdelim(s[i]) || iswhite(s[i]) ||
- s[i] == '#' || s[i] < 32 || s[i] >= 127)
- {
- fmt_putc(fmt, '#');
- c = (s[i] >> 4) & 0xf;
- fmt_putc(fmt, c < 0xA ? c + '0' : c + 'A' - 0xA);
- c = s[i] & 0xf;
- fmt_putc(fmt, c < 0xA ? c + '0' : c + 'A' - 0xA);
- }
- else
- {
- fmt_putc(fmt, s[i]);
- }
- }
-}
-
-static void fmt_array(struct fmt *fmt, pdf_obj *obj)
-{
- int i, n;
-
- n = pdf_array_len(obj);
- if (fmt->tight) {
- fmt_putc(fmt, '[');
- for (i = 0; i < n; i++) {
- fmt_obj(fmt, pdf_array_get(obj, i));
- fmt_sep(fmt);
- }
- fmt_putc(fmt, ']');
- }
- else {
- fmt_puts(fmt, "[ ");
- for (i = 0; i < n; i++) {
- if (fmt->col > 60) {
- fmt_putc(fmt, '\n');
- fmt_indent(fmt);
- }
- fmt_obj(fmt, pdf_array_get(obj, i));
- fmt_putc(fmt, ' ');
- }
- fmt_putc(fmt, ']');
- fmt_sep(fmt);
- }
-}
-
-static void fmt_dict(struct fmt *fmt, pdf_obj *obj)
-{
- int i, n;
- pdf_obj *key, *val;
-
- n = pdf_dict_len(obj);
- if (fmt->tight) {
- fmt_puts(fmt, "<<");
- for (i = 0; i < n; i++) {
- fmt_obj(fmt, pdf_dict_get_key(obj, i));
- fmt_sep(fmt);
- fmt_obj(fmt, pdf_dict_get_val(obj, i));
- fmt_sep(fmt);
- }
- fmt_puts(fmt, ">>");
- }
- else {
- fmt_puts(fmt, "<<\n");
- fmt->indent ++;
- for (i = 0; i < n; i++) {
- key = pdf_dict_get_key(obj, i);
- val = pdf_dict_get_val(obj, i);
- fmt_indent(fmt);
- fmt_obj(fmt, key);
- fmt_putc(fmt, ' ');
- if (!pdf_is_indirect(val) && pdf_is_array(val))
- fmt->indent ++;
- fmt_obj(fmt, val);
- fmt_putc(fmt, '\n');
- if (!pdf_is_indirect(val) && pdf_is_array(val))
- fmt->indent --;
- }
- fmt->indent --;
- fmt_indent(fmt);
- fmt_puts(fmt, ">>");
- }
-}
-
-static void fmt_obj(struct fmt *fmt, pdf_obj *obj)
-{
- char buf[256];
-
- if (!obj)
- fmt_puts(fmt, "<NULL>");
- else if (pdf_is_indirect(obj))
- {
- sprintf(buf, "%d %d R", pdf_to_num(obj), pdf_to_gen(obj));
- fmt_puts(fmt, buf);
- }
- else if (pdf_is_null(obj))
- fmt_puts(fmt, "null");
- else if (pdf_is_bool(obj))
- fmt_puts(fmt, pdf_to_bool(obj) ? "true" : "false");
- else if (pdf_is_int(obj))
- {
- sprintf(buf, "%d", pdf_to_int(obj));
- fmt_puts(fmt, buf);
- }
- else if (pdf_is_real(obj))
- {
- sprintf(buf, "%1.9g", pdf_to_real(obj));
- if (strchr(buf, 'e')) /* bad news! */
- sprintf(buf, fabsf(pdf_to_real(obj)) > 1 ? "%1.1f" : "%1.8f", pdf_to_real(obj));
- fmt_puts(fmt, buf);
- }
- else if (pdf_is_string(obj))
- {
- char *str = pdf_to_str_buf(obj);
- int len = pdf_to_str_len(obj);
- int added = 0;
- int i, c;
- for (i = 0; i < len; i++) {
- c = (unsigned char)str[i];
- if (strchr("()\\\n\r\t\b\f", c))
- added ++;
- else if (c < 32 || c >= 127)
- added += 3;
- }
- if (added < len)
- fmt_str(fmt, obj);
- else
- fmt_hex(fmt, obj);
- }
- else if (pdf_is_name(obj))
- fmt_name(fmt, obj);
- else if (pdf_is_array(obj))
- fmt_array(fmt, obj);
- else if (pdf_is_dict(obj))
- fmt_dict(fmt, obj);
- else
- fmt_puts(fmt, "<unknown object>");
-}
-
-static int
-pdf_sprint_obj(char *s, int n, pdf_obj *obj, int tight)
-{
- struct fmt fmt;
-
- fmt.indent = 0;
- fmt.col = 0;
- fmt.sep = 0;
- fmt.last = 0;
-
- fmt.tight = tight;
- fmt.buf = s;
- fmt.cap = n;
- fmt.len = 0;
- fmt_obj(&fmt, obj);
-
- if (fmt.buf && fmt.len < fmt.cap)
- fmt.buf[fmt.len] = '\0';
-
- return fmt.len;
-}
-
-int
-pdf_fprint_obj(FILE *fp, pdf_obj *obj, int tight)
-{
- char buf[1024];
- char *ptr;
- int n;
-
- n = pdf_sprint_obj(NULL, 0, obj, tight);
- if ((n + 1) < sizeof buf)
- {
- pdf_sprint_obj(buf, sizeof buf, obj, tight);
- fputs(buf, fp);
- fputc('\n', fp);
- }
- else
- {
- ptr = fz_malloc(obj->ctx, n + 1);
- pdf_sprint_obj(ptr, n + 1, obj, tight);
- fputs(ptr, fp);
- fputc('\n', fp);
- fz_free(obj->ctx, ptr);
- }
- return n;
-}
-
-#ifndef NDEBUG
-void
-pdf_print_obj(pdf_obj *obj)
-{
- pdf_fprint_obj(stdout, obj, 0);
-}
-
-void
-pdf_print_ref(pdf_obj *ref)
-{
- pdf_print_obj(pdf_resolve_indirect(ref));
-}
-#endif