From 4bfda025c51199637368ce905855ecd5b7f96bb3 Mon Sep 17 00:00:00 2001
From: Tor Andersson <tor.andersson@artifex.com>
Date: Tue, 22 May 2018 15:49:25 +0200
Subject: Move link code to pdf-link.c.
---
source/pdf/pdf-annot.c | 349 +-----------------------------------------------
source/pdf/pdf-link.c | 356 +++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 357 insertions(+), 348 deletions(-)
create mode 100644 source/pdf/pdf-link.c
(limited to 'source')
diff --git a/source/pdf/pdf-annot.c b/source/pdf/pdf-annot.c
index cb09f84c..38b62cf3 100644
--- a/source/pdf/pdf-annot.c
+++ b/source/pdf/pdf-annot.c
@@ -3,357 +3,10 @@
#include <string.h>
-static pdf_obj *
-resolve_dest_rec(fz_context *ctx, pdf_document *doc, pdf_obj *dest, int depth)
-{
- if (depth > 10) /* Arbitrary to avoid infinite recursion */
- return NULL;
-
- if (pdf_is_name(ctx, dest) || pdf_is_string(ctx, dest))
- {
- dest = pdf_lookup_dest(ctx, doc, dest);
- dest = resolve_dest_rec(ctx, doc, dest, depth+1);
- return dest;
- }
-
- else if (pdf_is_array(ctx, dest))
- {
- return dest;
- }
-
- else if (pdf_is_dict(ctx, dest))
- {
- dest = pdf_dict_get(ctx, dest, PDF_NAME(D));
- return resolve_dest_rec(ctx, doc, dest, depth+1);
- }
-
- else if (pdf_is_indirect(ctx, dest))
- return dest;
-
- return NULL;
-}
-
-static pdf_obj *
-resolve_dest(fz_context *ctx, pdf_document *doc, pdf_obj *dest)
-{
- return resolve_dest_rec(ctx, doc, dest, 0);
-}
-
-char *
-pdf_parse_link_dest(fz_context *ctx, pdf_document *doc, pdf_obj *dest)
-{
- pdf_obj *obj;
- char buf[256];
- const char *ld;
- int page;
- int x, y;
-
- dest = resolve_dest(ctx, doc, dest);
- if (dest == NULL)
- {
- fz_warn(ctx, "undefined link destination");
- return NULL;
- }
-
- if (pdf_is_name(ctx, dest))
- {
- ld = pdf_to_name(ctx, dest);
- return fz_strdup(ctx, ld);
- }
- else if (pdf_is_string(ctx, dest))
- {
- ld = pdf_to_str_buf(ctx, dest);
- return fz_strdup(ctx, ld);
- }
-
- obj = pdf_array_get(ctx, dest, 0);
- if (pdf_is_int(ctx, obj))
- page = pdf_to_int(ctx, obj);
- else
- {
- fz_try(ctx)
- page = pdf_lookup_page_number(ctx, doc, obj);
- fz_catch(ctx)
- page = -1;
- }
-
- x = y = 0;
- obj = pdf_array_get(ctx, dest, 1);
- if (pdf_name_eq(ctx, obj, PDF_NAME(XYZ)))
- {
- x = pdf_array_get_int(ctx, dest, 2);
- y = pdf_array_get_int(ctx, dest, 3);
- }
- else if (pdf_name_eq(ctx, obj, PDF_NAME(FitR)))
- {
- x = pdf_array_get_int(ctx, dest, 2);
- y = pdf_array_get_int(ctx, dest, 5);
- }
- else if (pdf_name_eq(ctx, obj, PDF_NAME(FitH)) || pdf_name_eq(ctx, obj, PDF_NAME(FitBH)))
- y = pdf_array_get_int(ctx, dest, 2);
- else if (pdf_name_eq(ctx, obj, PDF_NAME(FitV)) || pdf_name_eq(ctx, obj, PDF_NAME(FitBV)))
- x = pdf_array_get_int(ctx, dest, 2);
-
- if (page >= 0)
- {
- if (x != 0 || y != 0)
- fz_snprintf(buf, sizeof buf, "#%d,%d,%d", page + 1, x, y);
- else
- fz_snprintf(buf, sizeof buf, "#%d", page + 1);
- return fz_strdup(ctx, buf);
- }
-
- return NULL;
-}
-
-char *
-pdf_parse_file_spec(fz_context *ctx, pdf_document *doc, pdf_obj *file_spec, pdf_obj *dest)
-{
- pdf_obj *filename=NULL;
- char *path = NULL;
- char *uri = NULL;
- char buf[256];
- size_t n;
-
- if (pdf_is_string(ctx, file_spec))
- filename = file_spec;
-
- if (pdf_is_dict(ctx, file_spec)) {
-#ifdef _WIN32
- filename = pdf_dict_get(ctx, file_spec, PDF_NAME(DOS));
-#else
- filename = pdf_dict_get(ctx, file_spec, PDF_NAME(Unix));
-#endif
- if (!filename)
- filename = pdf_dict_geta(ctx, file_spec, PDF_NAME(UF), PDF_NAME(F));
- }
-
- if (!pdf_is_string(ctx, filename))
- {
- fz_warn(ctx, "cannot parse file specification");
- return NULL;
- }
-
- path = pdf_to_utf8(ctx, filename);
#ifdef _WIN32
- if (!pdf_name_eq(ctx, pdf_dict_get(ctx, file_spec, PDF_NAME(FS)), PDF_NAME(URL)))
- {
- /* move the file name into the expected place and use the expected path separator */
- char *c;
- if (path[0] == '/' && (('A' <= path[1] && path[1] <= 'Z') || ('a' <= path[1] && path[1] <= 'z')) && path[2] == '/')
- {
- path[0] = path[1];
- path[1] = ':';
- }
- for (c = path; *c; c++)
- {
- if (*c == '/')
- *c = '\\';
- }
- }
+#define timegm _mkgmtime
#endif
- if (pdf_is_array(ctx, dest))
- fz_snprintf(buf, sizeof buf, "#page=%d", pdf_array_get_int(ctx, dest, 0) + 1);
- else if (pdf_is_name(ctx, dest))
- fz_snprintf(buf, sizeof buf, "#%s", pdf_to_name(ctx, dest));
- else if (pdf_is_string(ctx, dest))
- fz_snprintf(buf, sizeof buf, "#%s", pdf_to_str_buf(ctx, dest));
- else
- buf[0] = 0;
-
- n = 7 + strlen(path) + strlen(buf) + 1;
- uri = fz_malloc(ctx, n);
- fz_strlcpy(uri, "file://", n);
- fz_strlcat(uri, path, n);
- fz_strlcat(uri, buf, n);
- fz_free(ctx, path);
- return uri;
-}
-
-char *
-pdf_parse_link_action(fz_context *ctx, pdf_document *doc, pdf_obj *action, int pagenum)
-{
- pdf_obj *obj, *dest, *file_spec;
-
- if (!action)
- return NULL;
-
- obj = pdf_dict_get(ctx, action, PDF_NAME(S));
- if (pdf_name_eq(ctx, PDF_NAME(GoTo), obj))
- {
- dest = pdf_dict_get(ctx, action, PDF_NAME(D));
- return pdf_parse_link_dest(ctx, doc, dest);
- }
- else if (pdf_name_eq(ctx, PDF_NAME(URI), obj))
- {
- /* URI entries are ASCII strings */
- const char *uri = pdf_dict_get_string(ctx, action, PDF_NAME(URI), NULL);
- if (!fz_is_external_link(ctx, uri))
- {
- pdf_obj *uri_base_obj = pdf_dict_getp(ctx, pdf_trailer(ctx, doc), "Root/URI/Base");
- const char *uri_base = uri_base_obj ? pdf_to_str_buf(ctx, uri_base_obj) : "file://";
- char *new_uri = fz_malloc(ctx, strlen(uri_base) + strlen(uri) + 1);
- strcpy(new_uri, uri_base);
- strcat(new_uri, uri);
- return new_uri;
- }
- return fz_strdup(ctx, uri);
- }
- else if (pdf_name_eq(ctx, PDF_NAME(Launch), obj))
- {
- file_spec = pdf_dict_get(ctx, action, PDF_NAME(F));
- return pdf_parse_file_spec(ctx, doc, file_spec, NULL);
- }
- else if (pdf_name_eq(ctx, PDF_NAME(GoToR), obj))
- {
- dest = pdf_dict_get(ctx, action, PDF_NAME(D));
- file_spec = pdf_dict_get(ctx, action, PDF_NAME(F));
- return pdf_parse_file_spec(ctx, doc, file_spec, dest);
- }
- else if (pdf_name_eq(ctx, PDF_NAME(Named), obj))
- {
- dest = pdf_dict_get(ctx, action, PDF_NAME(N));
-
- if (pdf_name_eq(ctx, PDF_NAME(FirstPage), dest))
- pagenum = 0;
- else if (pdf_name_eq(ctx, PDF_NAME(LastPage), dest))
- pagenum = pdf_count_pages(ctx, doc) - 1;
- else if (pdf_name_eq(ctx, PDF_NAME(PrevPage), dest) && pagenum >= 0)
- {
- if (pagenum > 0)
- pagenum--;
- }
- else if (pdf_name_eq(ctx, PDF_NAME(NextPage), dest) && pagenum >= 0)
- {
- if (pagenum < pdf_count_pages(ctx, doc) - 1)
- pagenum++;
- }
- else
- return NULL;
-
- return fz_asprintf(ctx, "#%d", pagenum + 1);
- }
-
- return NULL;
-}
-
-static fz_link *
-pdf_load_link(fz_context *ctx, pdf_document *doc, pdf_obj *dict, int pagenum, const fz_matrix *page_ctm)
-{
- pdf_obj *action;
- pdf_obj *obj;
- fz_rect bbox;
- char *uri;
- fz_link *link = NULL;
-
- obj = pdf_dict_get(ctx, dict, PDF_NAME(Subtype));
- if (!pdf_name_eq(ctx, obj, PDF_NAME(Link)))
- return NULL;
-
- obj = pdf_dict_get(ctx, dict, PDF_NAME(Rect));
- if (!obj)
- return NULL;
-
- pdf_to_rect(ctx, obj, &bbox);
- fz_transform_rect(&bbox, page_ctm);
-
- obj = pdf_dict_get(ctx, dict, PDF_NAME(Dest));
- if (obj)
- uri = pdf_parse_link_dest(ctx, doc, obj);
- else
- {
- action = pdf_dict_get(ctx, dict, PDF_NAME(A));
- /* fall back to additional action button's down/up action */
- if (!action)
- action = pdf_dict_geta(ctx, pdf_dict_get(ctx, dict, PDF_NAME(AA)), PDF_NAME(U), PDF_NAME(D));
- uri = pdf_parse_link_action(ctx, doc, action, pagenum);
- }
-
- if (!uri)
- return NULL;
-
- fz_try(ctx)
- link = fz_new_link(ctx, &bbox, doc, uri);
- fz_always(ctx)
- fz_free(ctx, uri);
- fz_catch(ctx)
- fz_rethrow(ctx);
-
- return link;
-}
-
-fz_link *
-pdf_load_link_annots(fz_context *ctx, pdf_document *doc, pdf_obj *annots, int pagenum, const fz_matrix *page_ctm)
-{
- fz_link *link, *head, *tail;
- pdf_obj *obj;
- int i, n;
-
- head = tail = NULL;
- link = NULL;
-
- n = pdf_array_len(ctx, annots);
- for (i = 0; i < n; i++)
- {
- /* FIXME: Move the try/catch out of the loop for performance? */
- fz_try(ctx)
- {
- obj = pdf_array_get(ctx, annots, i);
- link = pdf_load_link(ctx, doc, obj, pagenum, page_ctm);
- }
- fz_catch(ctx)
- {
- fz_rethrow_if(ctx, FZ_ERROR_TRYLATER);
- link = NULL;
- }
-
- if (link)
- {
- if (!head)
- head = tail = link;
- else
- {
- tail->next = link;
- tail = link;
- }
- }
- }
-
- return head;
-}
-
-int
-pdf_resolve_link(fz_context *ctx, pdf_document *doc, const char *uri, float *xp, float *yp)
-{
- if (uri && uri[0] == '#')
- {
- int page = fz_atoi(uri + 1) - 1;
- if (xp || yp)
- {
- const char *x = strchr(uri, ',');
- const char *y = strrchr(uri, ',');
- if (x && y)
- {
- pdf_obj *obj;
- fz_matrix ctm;
- fz_point p;
-
- p.x = x ? fz_atoi(x + 1) : 0;
- p.y = y ? fz_atoi(y + 1) : 0;
- obj = pdf_lookup_page_obj(ctx, doc, page);
- pdf_page_obj_transform(ctx, obj, NULL, &ctm);
- fz_transform_point(&p, &ctm);
-
- if (xp) *xp = p.x;
- if (yp) *yp = p.y;
- }
- }
- return page;
- }
- fz_warn(ctx, "unknown link uri '%s'", uri);
- return -1;
-}
static void
pdf_drop_annot_imp(fz_context *ctx, pdf_annot *annot)
diff --git a/source/pdf/pdf-link.c b/source/pdf/pdf-link.c
new file mode 100644
index 00000000..56c11973
--- /dev/null
+++ b/source/pdf/pdf-link.c
@@ -0,0 +1,356 @@
+#include "mupdf/fitz.h"
+#include "mupdf/pdf.h"
+
+#include <string.h>
+
+static pdf_obj *
+resolve_dest_rec(fz_context *ctx, pdf_document *doc, pdf_obj *dest, int depth)
+{
+ if (depth > 10) /* Arbitrary to avoid infinite recursion */
+ return NULL;
+
+ if (pdf_is_name(ctx, dest) || pdf_is_string(ctx, dest))
+ {
+ dest = pdf_lookup_dest(ctx, doc, dest);
+ dest = resolve_dest_rec(ctx, doc, dest, depth+1);
+ return dest;
+ }
+
+ else if (pdf_is_array(ctx, dest))
+ {
+ return dest;
+ }
+
+ else if (pdf_is_dict(ctx, dest))
+ {
+ dest = pdf_dict_get(ctx, dest, PDF_NAME(D));
+ return resolve_dest_rec(ctx, doc, dest, depth+1);
+ }
+
+ else if (pdf_is_indirect(ctx, dest))
+ return dest;
+
+ return NULL;
+}
+
+static pdf_obj *
+resolve_dest(fz_context *ctx, pdf_document *doc, pdf_obj *dest)
+{
+ return resolve_dest_rec(ctx, doc, dest, 0);
+}
+
+char *
+pdf_parse_link_dest(fz_context *ctx, pdf_document *doc, pdf_obj *dest)
+{
+ pdf_obj *obj;
+ char buf[256];
+ const char *ld;
+ int page;
+ int x, y;
+
+ dest = resolve_dest(ctx, doc, dest);
+ if (dest == NULL)
+ {
+ fz_warn(ctx, "undefined link destination");
+ return NULL;
+ }
+
+ if (pdf_is_name(ctx, dest))
+ {
+ ld = pdf_to_name(ctx, dest);
+ return fz_strdup(ctx, ld);
+ }
+ else if (pdf_is_string(ctx, dest))
+ {
+ ld = pdf_to_str_buf(ctx, dest);
+ return fz_strdup(ctx, ld);
+ }
+
+ obj = pdf_array_get(ctx, dest, 0);
+ if (pdf_is_int(ctx, obj))
+ page = pdf_to_int(ctx, obj);
+ else
+ {
+ fz_try(ctx)
+ page = pdf_lookup_page_number(ctx, doc, obj);
+ fz_catch(ctx)
+ page = -1;
+ }
+
+ x = y = 0;
+ obj = pdf_array_get(ctx, dest, 1);
+ if (pdf_name_eq(ctx, obj, PDF_NAME(XYZ)))
+ {
+ x = pdf_array_get_int(ctx, dest, 2);
+ y = pdf_array_get_int(ctx, dest, 3);
+ }
+ else if (pdf_name_eq(ctx, obj, PDF_NAME(FitR)))
+ {
+ x = pdf_array_get_int(ctx, dest, 2);
+ y = pdf_array_get_int(ctx, dest, 5);
+ }
+ else if (pdf_name_eq(ctx, obj, PDF_NAME(FitH)) || pdf_name_eq(ctx, obj, PDF_NAME(FitBH)))
+ y = pdf_array_get_int(ctx, dest, 2);
+ else if (pdf_name_eq(ctx, obj, PDF_NAME(FitV)) || pdf_name_eq(ctx, obj, PDF_NAME(FitBV)))
+ x = pdf_array_get_int(ctx, dest, 2);
+
+ if (page >= 0)
+ {
+ if (x != 0 || y != 0)
+ fz_snprintf(buf, sizeof buf, "#%d,%d,%d", page + 1, x, y);
+ else
+ fz_snprintf(buf, sizeof buf, "#%d", page + 1);
+ return fz_strdup(ctx, buf);
+ }
+
+ return NULL;
+}
+
+char *
+pdf_parse_file_spec(fz_context *ctx, pdf_document *doc, pdf_obj *file_spec, pdf_obj *dest)
+{
+ pdf_obj *filename=NULL;
+ char *path = NULL;
+ char *uri = NULL;
+ char buf[256];
+ size_t n;
+
+ if (pdf_is_string(ctx, file_spec))
+ filename = file_spec;
+
+ if (pdf_is_dict(ctx, file_spec)) {
+#ifdef _WIN32
+ filename = pdf_dict_get(ctx, file_spec, PDF_NAME(DOS));
+#else
+ filename = pdf_dict_get(ctx, file_spec, PDF_NAME(Unix));
+#endif
+ if (!filename)
+ filename = pdf_dict_geta(ctx, file_spec, PDF_NAME(UF), PDF_NAME(F));
+ }
+
+ if (!pdf_is_string(ctx, filename))
+ {
+ fz_warn(ctx, "cannot parse file specification");
+ return NULL;
+ }
+
+ path = pdf_to_utf8(ctx, filename);
+#ifdef _WIN32
+ if (!pdf_name_eq(ctx, pdf_dict_get(ctx, file_spec, PDF_NAME(FS)), PDF_NAME(URL)))
+ {
+ /* move the file name into the expected place and use the expected path separator */
+ char *c;
+ if (path[0] == '/' && (('A' <= path[1] && path[1] <= 'Z') || ('a' <= path[1] && path[1] <= 'z')) && path[2] == '/')
+ {
+ path[0] = path[1];
+ path[1] = ':';
+ }
+ for (c = path; *c; c++)
+ {
+ if (*c == '/')
+ *c = '\\';
+ }
+ }
+#endif
+
+ if (pdf_is_array(ctx, dest))
+ fz_snprintf(buf, sizeof buf, "#page=%d", pdf_array_get_int(ctx, dest, 0) + 1);
+ else if (pdf_is_name(ctx, dest))
+ fz_snprintf(buf, sizeof buf, "#%s", pdf_to_name(ctx, dest));
+ else if (pdf_is_string(ctx, dest))
+ fz_snprintf(buf, sizeof buf, "#%s", pdf_to_str_buf(ctx, dest));
+ else
+ buf[0] = 0;
+
+ n = 7 + strlen(path) + strlen(buf) + 1;
+ uri = fz_malloc(ctx, n);
+ fz_strlcpy(uri, "file://", n);
+ fz_strlcat(uri, path, n);
+ fz_strlcat(uri, buf, n);
+ fz_free(ctx, path);
+ return uri;
+}
+
+char *
+pdf_parse_link_action(fz_context *ctx, pdf_document *doc, pdf_obj *action, int pagenum)
+{
+ pdf_obj *obj, *dest, *file_spec;
+
+ if (!action)
+ return NULL;
+
+ obj = pdf_dict_get(ctx, action, PDF_NAME(S));
+ if (pdf_name_eq(ctx, PDF_NAME(GoTo), obj))
+ {
+ dest = pdf_dict_get(ctx, action, PDF_NAME(D));
+ return pdf_parse_link_dest(ctx, doc, dest);
+ }
+ else if (pdf_name_eq(ctx, PDF_NAME(URI), obj))
+ {
+ /* URI entries are ASCII strings */
+ const char *uri = pdf_dict_get_string(ctx, action, PDF_NAME(URI), NULL);
+ if (!fz_is_external_link(ctx, uri))
+ {
+ pdf_obj *uri_base_obj = pdf_dict_getp(ctx, pdf_trailer(ctx, doc), "Root/URI/Base");
+ const char *uri_base = uri_base_obj ? pdf_to_str_buf(ctx, uri_base_obj) : "file://";
+ char *new_uri = fz_malloc(ctx, strlen(uri_base) + strlen(uri) + 1);
+ strcpy(new_uri, uri_base);
+ strcat(new_uri, uri);
+ return new_uri;
+ }
+ return fz_strdup(ctx, uri);
+ }
+ else if (pdf_name_eq(ctx, PDF_NAME(Launch), obj))
+ {
+ file_spec = pdf_dict_get(ctx, action, PDF_NAME(F));
+ return pdf_parse_file_spec(ctx, doc, file_spec, NULL);
+ }
+ else if (pdf_name_eq(ctx, PDF_NAME(GoToR), obj))
+ {
+ dest = pdf_dict_get(ctx, action, PDF_NAME(D));
+ file_spec = pdf_dict_get(ctx, action, PDF_NAME(F));
+ return pdf_parse_file_spec(ctx, doc, file_spec, dest);
+ }
+ else if (pdf_name_eq(ctx, PDF_NAME(Named), obj))
+ {
+ dest = pdf_dict_get(ctx, action, PDF_NAME(N));
+
+ if (pdf_name_eq(ctx, PDF_NAME(FirstPage), dest))
+ pagenum = 0;
+ else if (pdf_name_eq(ctx, PDF_NAME(LastPage), dest))
+ pagenum = pdf_count_pages(ctx, doc) - 1;
+ else if (pdf_name_eq(ctx, PDF_NAME(PrevPage), dest) && pagenum >= 0)
+ {
+ if (pagenum > 0)
+ pagenum--;
+ }
+ else if (pdf_name_eq(ctx, PDF_NAME(NextPage), dest) && pagenum >= 0)
+ {
+ if (pagenum < pdf_count_pages(ctx, doc) - 1)
+ pagenum++;
+ }
+ else
+ return NULL;
+
+ return fz_asprintf(ctx, "#%d", pagenum + 1);
+ }
+
+ return NULL;
+}
+
+static fz_link *
+pdf_load_link(fz_context *ctx, pdf_document *doc, pdf_obj *dict, int pagenum, const fz_matrix *page_ctm)
+{
+ pdf_obj *action;
+ pdf_obj *obj;
+ fz_rect bbox;
+ char *uri;
+ fz_link *link = NULL;
+
+ obj = pdf_dict_get(ctx, dict, PDF_NAME(Subtype));
+ if (!pdf_name_eq(ctx, obj, PDF_NAME(Link)))
+ return NULL;
+
+ obj = pdf_dict_get(ctx, dict, PDF_NAME(Rect));
+ if (!obj)
+ return NULL;
+
+ pdf_to_rect(ctx, obj, &bbox);
+ fz_transform_rect(&bbox, page_ctm);
+
+ obj = pdf_dict_get(ctx, dict, PDF_NAME(Dest));
+ if (obj)
+ uri = pdf_parse_link_dest(ctx, doc, obj);
+ else
+ {
+ action = pdf_dict_get(ctx, dict, PDF_NAME(A));
+ /* fall back to additional action button's down/up action */
+ if (!action)
+ action = pdf_dict_geta(ctx, pdf_dict_get(ctx, dict, PDF_NAME(AA)), PDF_NAME(U), PDF_NAME(D));
+ uri = pdf_parse_link_action(ctx, doc, action, pagenum);
+ }
+
+ if (!uri)
+ return NULL;
+
+ fz_try(ctx)
+ link = fz_new_link(ctx, &bbox, doc, uri);
+ fz_always(ctx)
+ fz_free(ctx, uri);
+ fz_catch(ctx)
+ fz_rethrow(ctx);
+
+ return link;
+}
+
+fz_link *
+pdf_load_link_annots(fz_context *ctx, pdf_document *doc, pdf_obj *annots, int pagenum, const fz_matrix *page_ctm)
+{
+ fz_link *link, *head, *tail;
+ pdf_obj *obj;
+ int i, n;
+
+ head = tail = NULL;
+ link = NULL;
+
+ n = pdf_array_len(ctx, annots);
+ for (i = 0; i < n; i++)
+ {
+ /* FIXME: Move the try/catch out of the loop for performance? */
+ fz_try(ctx)
+ {
+ obj = pdf_array_get(ctx, annots, i);
+ link = pdf_load_link(ctx, doc, obj, pagenum, page_ctm);
+ }
+ fz_catch(ctx)
+ {
+ fz_rethrow_if(ctx, FZ_ERROR_TRYLATER);
+ link = NULL;
+ }
+
+ if (link)
+ {
+ if (!head)
+ head = tail = link;
+ else
+ {
+ tail->next = link;
+ tail = link;
+ }
+ }
+ }
+
+ return head;
+}
+
+int
+pdf_resolve_link(fz_context *ctx, pdf_document *doc, const char *uri, float *xp, float *yp)
+{
+ if (uri && uri[0] == '#')
+ {
+ int page = fz_atoi(uri + 1) - 1;
+ if (xp || yp)
+ {
+ const char *x = strchr(uri, ',');
+ const char *y = strrchr(uri, ',');
+ if (x && y)
+ {
+ pdf_obj *obj;
+ fz_matrix ctm;
+ fz_point p;
+
+ p.x = x ? fz_atoi(x + 1) : 0;
+ p.y = y ? fz_atoi(y + 1) : 0;
+ obj = pdf_lookup_page_obj(ctx, doc, page);
+ pdf_page_obj_transform(ctx, obj, NULL, &ctm);
+ fz_transform_point(&p, &ctm);
+
+ if (xp) *xp = p.x;
+ if (yp) *yp = p.y;
+ }
+ }
+ return page;
+ }
+ fz_warn(ctx, "unknown link uri '%s'", uri);
+ return -1;
+}
--
cgit v1.2.3