Import Ghostscript 9.56.0ghostscript-9.56

Signed-off-by: Sam James <sam@gentoo.org>

1 files changed, 128 insertions, 9 deletions

diff --git a/extract/src/document.h b/extract/src/document.h
index c59348f4..2dc4f1ee 100644
--- a/extract/src/document.h
+++ b/extract/src/document.h
@@ -1,6 +1,15 @@
 #ifndef ARTIFEX_EXTRACT_DOCUMENT_H
 #define ARTIFEX_EXTRACT_DOCUMENT_H
 
+#include "../include/extract.h"
+
+#ifdef _MSC_VER
+    #include "compat_stdint.h"
+#else
+    #include <stdint.h>
+#endif
+
+
 static const double pi = 3.141592653589793;
 
 typedef struct
@@ -9,6 +18,16 @@ typedef struct
     double y;
 } point_t;
 
+const char* extract_point_string(const point_t* point);
+
+typedef struct
+{
+    point_t min;
+    point_t max;
+} rect_t;
+
+const char* extract_rect_string(const rect_t* rect);
+
 typedef struct
 {
     double  a;
@@ -19,9 +38,15 @@ typedef struct
     double  f;
 } matrix_t;
 
-double matrix_expansion(matrix_t m);
+const char* extract_matrix_string(const matrix_t* matrix);
 
-int matrix_cmp4(const matrix_t* lhs, const matrix_t* rhs)
+double      extract_matrix_expansion(matrix_t m);
+/* Returns a*d - b*c. */
+
+point_t     extract_multiply_matrix_point(matrix_t m, point_t p);
+matrix_t    extract_multiply_matrix_matrix(matrix_t m1, matrix_t m2);
+
+int extract_matrix_cmp4(const matrix_t* lhs, const matrix_t* rhs)
 ;
 /* Returns zero if first four members of *lhs and *rhs are equal, otherwise
 +/-1. */
@@ -48,7 +73,7 @@ typedef struct
     matrix_t    trm;
     char*       font_name;
     
-    /* font size is matrix_expansion(trm). */
+    /* font size is extract_matrix_cmp4(trm). */
     
     struct {
         unsigned font_bold      : 1;
@@ -61,14 +86,21 @@ typedef struct
 } span_t;
 /* List of chars that have same font and are usually adjacent. */
 
-char_t* span_char_last(span_t* span);
+void extract_span_init(span_t* span);
+
+void extract_span_free(extract_alloc_t* alloc, span_t** pspan);
+/* Frees a span_t, returning with *pspan set to NULL. */
+
+void extract_spans_free(extract_alloc_t* alloc, span_t*** pspans, int spans_num);
+
+char_t* extract_span_char_last(span_t* span);
 /* Returns last character in span. */
 
-int span_append_c(extract_alloc_t* alloc, span_t* span, int c);
+int extract_span_append_c(extract_alloc_t* alloc, span_t* span, int c);
 /* Appends new char_t to an span_t with .ucs=c and all other
 fields zeroed. */
 
-const char* span_string(extract_alloc_t* alloc, span_t* span);
+const char* extract_span_string(extract_alloc_t* alloc, span_t* span);
 /* Returns static string containing info about span_t. */
 
 typedef struct
@@ -78,10 +110,13 @@ typedef struct
 } line_t;
 /* List of spans that are aligned on same line. */
 
-span_t* line_span_first(line_t* line);
+void extract_line_free(extract_alloc_t* alloc, line_t** pline);
+void extract_lines_free(extract_alloc_t* alloc, line_t*** plines, int lines_num);
+
+span_t* extract_line_span_first(line_t* line);
 /* Returns first span in a line. */
 
-span_t* line_span_last(line_t* line);
+span_t* extract_line_span_last(line_t* line);
 /* Returns last span in a line. */
 
 typedef struct
@@ -112,6 +147,61 @@ typedef struct
 <name> and <id> are created to be unique identifiers for use in generated docx
 file. */
 
+void extract_image_clear(extract_alloc_t* alloc, image_t* image);
+
+typedef struct
+{
+    float   color;
+    rect_t  rect;
+} tableline_t;
+/* A line that is part of a table. */
+
+typedef struct
+{
+    tableline_t*    tablelines;
+    int             tablelines_num;
+} tablelines_t;
+
+
+typedef struct
+{
+    rect_t          rect;
+    
+    /* If left/above is true, this cell is not obscured by cell to its
+    left/above. */
+    uint8_t         left;
+    uint8_t         above;
+    
+    /* extend_right and extend_down are 1 for normal cells, 2 for cells which
+    extend right/down to cover an additional column/row, 3 to cover two
+    additional columns/rows etc. */
+    int             extend_right;
+    int             extend_down;
+    
+    /* Contents of this cell. */
+    line_t**        lines;
+    int             lines_num;
+    paragraph_t**   paragraphs;
+    int             paragraphs_num;
+} cell_t;
+/* A cell within a table. */
+
+void extract_cell_init(cell_t* cell);
+void extract_cell_free(extract_alloc_t* alloc, cell_t** pcell);
+
+typedef struct
+{
+    point_t     pos;    /* top-left. */
+    
+    /* Array of cells_num_x*cells_num_y cells; cell (x, y) is:
+        cells_num_x * y + x.
+    */
+    cell_t**    cells;
+    int         cells_num_x;
+    int         cells_num_y;
+} table_t;
+
+
 typedef struct
 {
     span_t**    spans;
@@ -129,10 +219,17 @@ typedef struct
     int             paragraphs_num;
     /* These refer to items in .lines. Initially empty, then set
     by extract_join(). */
+    
+    tablelines_t    tablelines_horizontal;
+    tablelines_t    tablelines_vertical;
+    
+    table_t**   tables;
+    int         tables_num;
 
 } extract_page_t;
 /* A page. Contains different representations of the list of spans. NB not
-called page_t because this clashes with a system type on hpux. */
++called page_t because this clashes with a system type on hpux. */
+
 
 typedef struct
 {
@@ -150,9 +247,31 @@ typedef struct
     int         imagetypes_num;
 } images_t;
 
+
 int extract_document_join(extract_alloc_t* alloc, document_t* document);
+/* This does all the work of finding paragraphs and tables. */
 
 double extract_matrices_to_font_size(matrix_t* ctm, matrix_t* trm);
 
+/* Things below here are used when generating output. */
+
+typedef struct
+{
+    char*   name;
+    double  size;
+    int     bold;
+    int     italic;
+} font_t;
+/* Basic information about current font. */
+
+typedef struct
+{
+    font_t      font;
+    matrix_t*   ctm_prev;
+} content_state_t;
+/* Used to keep track of font information when writing paragraphs of odt
+content, e.g. so we know whether a font has changed so need to start a new odt
+span. */
+
 
 #endif