310 lines
6.8 KiB
Plaintext
310 lines
6.8 KiB
Plaintext
/*
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* tumble: build a PDF file from image files
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*
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* Parser
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* Copyright 2001, 2002, 2003, 2017 Eric Smith <spacewar@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation. Note that permission is
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* not granted to redistribute this program under the terms of any
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* other version of the General Public License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA
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*
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* 2009-03-13 [JDB] Add support for blank pages, overlay images, color
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* mapping, color-key masking, and push/pop of input
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* contexts.
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*/
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%{
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include "semantics.h"
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extern int yylex (void);
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%}
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%define parse.error verbose
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%union {
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int integer;
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char character;
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double fp;
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char *string;
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page_size_t size;
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range_t range;
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page_label_t page_label;
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overlay_t overlay;
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rgb_t rgb;
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rgb_range_t rgb_range;
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}
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%token <integer> INTEGER
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%token <fp> FLOAT
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%token <string> STRING
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%token <character> CHARACTER
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%token <size> PAGE_SIZE
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%token ELIPSIS
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%token CM
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%token INCH
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%token PORTRAIT
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%token LANDSCAPE
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%token FILE_KEYWORD
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%token IMAGE
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%token IMAGES
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%token IMAGEMASK
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%token ROTATE
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%token CROP
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%token SIZE
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%token RESOLUTION
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%token BLANK
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%token INPUT
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%token TRANSPARENT
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%token COLORMAP
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%token LABEL
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%token OVERLAY
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%token PAGE
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%token PAGES
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%token BOOKMARK
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%token OUTPUT
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%token AUTHOR
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%token CREATOR
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%token TITLE
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%token SUBJECT
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%token KEYWORDS
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%type <range> range
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%type <range> image_ranges
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%type <range> page_ranges
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%type <fp> unit
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%type <fp> length
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%type <integer> orientation
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%type <size> page_size
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%type <rgb> rgb
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%type <rgb_range> rgb_range
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%type <rgb_range> gray_range
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%type <rgb_range> color_range
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%%
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statements:
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statement
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| statements statement ;
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statement:
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/* empty: null statement */
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| input_statement
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| output_statement ;
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range:
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INTEGER ELIPSIS INTEGER { $$.first = $1; $$.last = $3; }
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| INTEGER { $$.first = $1; $$.last = $1; } ;
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image_ranges:
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range { input_images ($1); }
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| image_ranges ',' range { input_images ($3); } ;
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input_file_clause:
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FILE_KEYWORD STRING { input_set_file ($2); } ;
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image_clause:
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IMAGE INTEGER { range_t range = { $2, $2 }; input_images (range); } ;
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images_clause:
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IMAGES image_ranges ;
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rotate_clause:
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ROTATE INTEGER { input_set_rotation ($2); } ;
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unit:
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/* empty */ /* default to INCH */ { $$ = 1.0; }
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| CM { $$ = (1.0 / 25.4); }
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| INCH { $$ = 1.0; } ;
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length:
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FLOAT unit { $$ = $1 * $2; } ;
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crop_clause:
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CROP PAGE_SIZE
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| CROP PAGE_SIZE orientation
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| CROP length ',' length
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| CROP length ',' length ',' length ',' length ;
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orientation:
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PORTRAIT { $$ = 0; }
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| LANDSCAPE { $$ = 1; } ;
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page_size:
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PAGE_SIZE { $$ = $1; }
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| PAGE_SIZE orientation { if ($2)
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{
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$$.width = $1.height;
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$$.height = $1.width;
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}
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else
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$$ = $1;
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}
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| length ',' length { $$.width = $1; $$.height = $3; } ;
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size_clause:
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SIZE page_size { input_set_page_size ($2); } ;
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resolution_clause:
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RESOLUTION FLOAT unit ;
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rgb_range:
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'(' range range range ')' { $$.red = $2; $$.green = $3; $$.blue = $4; }
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gray_range:
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'(' range ')' { $$.red = $2; $$.green = $2; $$.blue = $2; } ;
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color_range:
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rgb_range
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| gray_range;
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transparency_clause:
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TRANSPARENT color_range { input_set_transparency ($2); } ;
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modifier_clause:
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rotate_clause ';'
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| crop_clause ';'
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| size_clause ';'
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| resolution_clause ';'
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| transparency_clause ';' ;
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modifier_clauses:
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modifier_clause
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| modifier_clauses modifier_clause ;
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blank_page_clause:
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BLANK { input_set_file (NULL); } size_clause;
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input_clause:
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input_file_clause ';'
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| image_clause ';'
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| images_clause ';'
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| modifier_clauses ';'
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| blank_page_clause ';'
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| input_clause_list ;
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input_clauses:
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input_clause
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| input_clauses input_clause ;
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input_clause_list:
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'{' { input_push_context (); }
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input_clauses '}' { input_pop_context (); } ;
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input_statement:
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INPUT '{' input_clauses '}' ;
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pdf_file_attribute:
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AUTHOR STRING { output_set_author ($2); }
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| CREATOR STRING { output_set_creator ($2); }
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| TITLE STRING { output_set_title ($2); }
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| SUBJECT STRING { output_set_subject ($2); }
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| KEYWORDS STRING { output_set_keywords ($2); } ;
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pdf_file_attribute_list:
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pdf_file_attribute
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| pdf_file_attribute_list pdf_file_attribute ;
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pdf_file_attributes:
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/* empty */
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| pdf_file_attribute_list ;
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output_file_clause:
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FILE_KEYWORD STRING { output_set_file ($2); }
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pdf_file_attributes ;
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label_clause:
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LABEL { page_label_t label = { NULL, '\0' }; output_set_page_label (label); }
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| LABEL STRING { page_label_t label = { $2, '\0' }; output_set_page_label (label); }
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| LABEL CHARACTER { page_label_t label = { NULL, $2 }; output_set_page_label (label); }
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| LABEL STRING ',' CHARACTER { page_label_t label = { $2, $4 }; output_set_page_label (label); } ;
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overlay_clause_list:
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/* empty */
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| '{' overlay_clauses '}' ;
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overlay_clauses:
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overlay_clause ';'
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| overlay_clauses overlay_clause ';' ;
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overlay_clause:
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OVERLAY length ',' length { overlay_t overlay = { .imagemask = false,
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.position.x = $2,
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.position.y = $4 }; output_overlay (overlay); }
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| IMAGEMASK rgb { output_imagemask($2); } ;
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page_ranges:
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range { output_pages ($1); }
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| page_ranges ',' range { output_pages ($3); } ;
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page_clause:
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PAGE INTEGER { range_t range = { $2, $2 }; output_pages (range); } overlay_clause_list ;
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pages_clause:
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PAGES page_ranges ;
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bookmark_name:
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STRING { output_set_bookmark ($1); } ;
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bookmark_name_list:
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bookmark_name
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| bookmark_name_list ',' bookmark_name ;
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bookmark_clause:
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BOOKMARK { output_push_context (); bookmark_level++; }
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bookmark_name_list
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output_clause_list { bookmark_level--; output_pop_context (); } ;
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rgb:
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'(' INTEGER INTEGER INTEGER ')' { $$.red = $2; $$.green = $3; $$.blue = $4; } ;
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colormap_clause:
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COLORMAP rgb ',' rgb { output_set_colormap ($2, $4); } ;
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output_clause:
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output_file_clause ';'
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| colormap_clause ';'
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| label_clause ';'
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| page_clause ';'
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| pages_clause ';'
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| bookmark_clause ';'
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| output_clause_list ;
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output_clauses:
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output_clause
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| output_clauses output_clause ;
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output_clause_list:
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'{' { output_push_context (); }
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output_clauses '}' { output_pop_context (); } ;
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output_statement:
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OUTPUT '{' output_clauses '}' ;
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