diff options
Diffstat (limited to 'xps/xps_doc.c')
| -rw-r--r-- | xps/xps_doc.c | 191 |
1 files changed, 151 insertions, 40 deletions
diff --git a/xps/xps_doc.c b/xps/xps_doc.c index 94fb32d7..c9a4eec5 100644 --- a/xps/xps_doc.c +++ b/xps/xps_doc.c @@ -1,35 +1,13 @@ #include "fitz.h" #include "muxps.h" -xps_part * -xps_new_part(xps_context *ctx, char *name, int size) -{ - xps_part *part; - - part = fz_malloc(sizeof(xps_part)); - part->name = fz_strdup(name); - part->size = size; - part->data = fz_malloc(size + 1); - part->data[size] = 0; /* null-terminate for xml parser */ - - return part; -} - -void -xps_free_part(xps_context *ctx, xps_part *part) -{ - fz_free(part->name); - fz_free(part->data); - fz_free(part); -} - /* * The FixedDocumentSequence and FixedDocument parts determine * which parts correspond to actual pages, and the page order. */ void -xps_debug_fixdocseq(xps_context *ctx) +xps_debug_page_list(xps_context *ctx) { xps_document *fixdoc = ctx->first_fixdoc; xps_page *page = ctx->first_page; @@ -76,21 +54,6 @@ xps_add_fixed_document(xps_context *ctx, char *name) } } -void -xps_free_fixed_documents(xps_context *ctx) -{ - xps_document *node = ctx->first_fixdoc; - while (node) - { - xps_document *next = node->next; - fz_free(node->name); - fz_free(node); - node = next; - } - ctx->first_fixdoc = NULL; - ctx->last_fixdoc = NULL; -} - static void xps_add_fixed_page(xps_context *ctx, char *name, int width, int height) { @@ -120,7 +83,7 @@ xps_add_fixed_page(xps_context *ctx, char *name, int width, int height) } } -void +static void xps_free_fixed_pages(xps_context *ctx) { xps_page *node = ctx->first_page; @@ -135,6 +98,28 @@ xps_free_fixed_pages(xps_context *ctx) ctx->last_page = NULL; } +static void +xps_free_fixed_documents(xps_context *ctx) +{ + xps_document *node = ctx->first_fixdoc; + while (node) + { + xps_document *next = node->next; + fz_free(node->name); + fz_free(node); + node = next; + } + ctx->first_fixdoc = NULL; + ctx->last_fixdoc = NULL; +} + +void +xps_free_page_list(xps_context *ctx) +{ + xps_free_fixed_documents(ctx); + xps_free_fixed_pages(ctx); +} + /* * Parse the fixed document sequence structure and _rels/.rels to find the start part. */ @@ -189,7 +174,7 @@ xps_parse_metadata_imp(xps_context *ctx, xml_element *item) } } -int +static int xps_parse_metadata(xps_context *ctx, xps_part *part) { xml_element *root; @@ -226,3 +211,129 @@ xps_parse_metadata(xps_context *ctx, xps_part *part) return fz_okay; } + +static int +xps_read_and_process_metadata_part(xps_context *ctx, char *name) +{ + xps_part *part; + int code; + + part = xps_read_part(ctx, name); + if (!part) + return fz_rethrow(-1, "cannot read zip part '%s'", name); + + code = xps_parse_metadata(ctx, part); + if (code) + return fz_rethrow(code, "cannot process metadata part '%s'", name); + + xps_free_part(ctx, part); + + return fz_okay; +} + +int +xps_read_page_list(xps_context *ctx) +{ + xps_document *doc; + int code; + + code = xps_read_and_process_metadata_part(ctx, "/_rels/.rels"); + if (code) + return fz_rethrow(code, "cannot process root relationship part"); + + if (!ctx->start_part) + return fz_throw("cannot find fixed document sequence start part"); + + code = xps_read_and_process_metadata_part(ctx, ctx->start_part); + if (code) + return fz_rethrow(code, "cannot process FixedDocumentSequence part"); + + for (doc = ctx->first_fixdoc; doc; doc = doc->next) + { + code = xps_read_and_process_metadata_part(ctx, doc->name); + if (code) + return fz_rethrow(code, "cannot process FixedDocument part"); + } + + return fz_okay; +} + +int +xps_count_pages(xps_context *ctx) +{ + xps_page *page; + int n = 0; + for (page = ctx->first_page; page; page = page->next) + n ++; + return n; +} + +static int +xps_load_fixed_page(xps_context *ctx, xps_page *page) +{ + xps_part *part; + xml_element *root; + char *width_att; + char *height_att; + + part = xps_read_part(ctx, page->name); + if (!part) + return fz_rethrow(-1, "cannot read zip part '%s'", page->name); + + root = xml_parse_document(part->data, part->size); + if (!root) + return fz_rethrow(-1, "cannot parse xml part '%s'", page->name); + + xps_free_part(ctx, part); + + if (strcmp(xml_tag(root), "FixedPage")) + return fz_throw("expected FixedPage element (found %s)", xml_tag(root)); + + width_att = xml_att(root, "Width"); + if (!width_att) + return fz_throw("FixedPage missing required attribute: Width"); + + height_att = xml_att(root, "Height"); + if (!height_att) + return fz_throw("FixedPage missing required attribute: Height"); + + page->width = atoi(width_att); + page->height = atoi(height_att); + page->root = root; + + return 0; +} + +xps_page * +xps_load_page(xps_context *ctx, int number) +{ + xps_page *page; + int code; + int n = 0; + + for (page = ctx->first_page; page; page = page->next) + { + if (n == number) + { + if (!page->root) + { + code = xps_load_fixed_page(ctx, page); + if (code) { + fz_rethrow(code, "cannot load page %d", number + 1); + return NULL; + } + } + return page; + } + n ++; + } + return nil; +} + +void +xps_free_page(xps_context *ctx, xps_page *page) +{ + if (page->root) + xml_free_element(page->root); + page->root = NULL; +} |