aboutsummaryrefslogtreecommitdiffstats
path: root/mkclrnam.scm
blob: 7377f3748a0fd1e016b9c1929d042e5fb1589296 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
;;; "mkclrnam.scm" create color name databases
;Copyright 2001, 2002, 2003 Aubrey Jaffer
;
;Permission to copy this software, to modify it, to redistribute it,
;to distribute modified versions, and to use it for any purpose is
;granted, subject to the following restrictions and understandings.
;
;1.  Any copy made of this software must include this copyright notice
;in full.
;
;2.  I have made no warranty or representation that the operation of
;this software will be error-free, and I am under no obligation to
;provide any services, by way of maintenance, update, or otherwise.
;
;3.  In conjunction with products arising from the use of this
;material, there shall be no use of my name in any advertising,
;promotional, or sales literature without prior written consent in
;each case.

(require 'string-search)
(require 'line-i/o)
(require 'scanf)
(require 'color)
(require 'color-names)
(require 'databases)
(require-if 'compiling 'filename)

;;@subsubheading Dictionary Creation
;;
;;@code{(require 'color-database)}
;;@ftindex color-database

;;@args file table-name rdb base-table-type
;;@args file table-name rdb
;;
;;@3 must be an open relational database or a string naming a relational
;;database file, @2 a symbol, and the string @1 must name an existing
;;file with colornames and their corresponding xRGB (6-digit hex)
;;values.  @0 creates a table @2 in @3 and enters the associations found
;;in @1 into it.
(define (file->color-dictionary file table-name . *db*)
  (define rdb (apply open-database! *db*))
  (define-tables rdb
    `(,table-name
      ((name string))
      ((color string)
       (order ordinal))
      ()))
  (let ((table ((rdb 'open-table) table-name #t)))
    (and table (load-rgb-txt file table))))

;;@args url table-name rdb base-table-type
;;@args url table-name rdb
;;
;;@3 must be an open relational database or a string naming a relational
;;database file and @2 a symbol.  @0 retrieves the resource named by the
;;string @1 using the @dfn{wget} program; then calls
;;@code{file->color-dictionary} to enter its associations in @2 in @1.
(define (url->color-dictionary url table-name . rdb)
  (require 'filename)
  (call-with-tmpnam
   (lambda (file)
     (system (string-append "wget -c -O" file " -USLIB" *SLIB-VERSION* " " url))
     (apply file->color-dictionary file table-name rdb))))

(define (load-rgb-txt path color-table)
  (cond ((not (file-exists? path))
	 (slib:error 'load-color-dictionary! 'file-exists? path)))
  (write 'load-rgb-txt) (display #\ ) (write path) (newline)
  (let ((color-table:row-insert (color-table 'row:insert))
	(color-table:row-retrieve (color-table 'row:retrieve))
	(method-id #f))
    (define (floats->rgb . rgbi)
      (apply color:sRGB
	     (map (lambda (x) (inexact->exact (round (* 255 x)))) rgbi)))
    (define (parse-rgb-line line)
      (let ((rgbx #f) (r #f) (g #f) (b #f)
	    (ri #f) (gi #f) (bi #f) (name #f) (junk #f) (ans #f))
	(define (check-match line color1 . colors)
	  (cond ((null? colors) (color->string color1))
		((> (CMC:DE* color1 (car colors)) 5.0)
		 (newline) (display line) (force-output)
		 (slib:warn (round (CMC:DE* color1 (car colors)))
			    'mismatch (color->string color1)
			    (color->string (car colors)))
		 (apply check-match line colors))
		(else (apply check-match line colors))))
	(for-each
	 (lambda (method)
	   (or ans
	       (let ((try (method line)))
		 (cond (try (set! ans try)
			    (display "**** Using method ")
			    (display method-id) (newline)
			    (set! parse-rgb-line method))))))
	 (list
	  (lambda (line)
	    (define en #f) (define fr #f) (define de #f)
	    (define es #f) (define cz #f) (define hu #f)
	    (case (sscanf line "#%6x	%[^	]	%[^	]	%[^	]	%[^	]	%[^	]	%[^	]%s"
			  rgbx en fr de es cz hu junk)
	      ((7)
	       (set! method-id 'm77)
	       (cons (check-match line (xRGB->color rgbx))
		     (map color-name:canonicalize (list en fr de es cz hu))))
	      (else #f)))
	  (lambda (line)
	    (case (sscanf line " %24[a-zA-Z0-9_ ] %d %d %d %e %e %e %s"
			  name r g b ri gi bi junk)
	      ((7)
	       (set! method-id 'm7)
	       (list (check-match line (color:sRGB r g b) (floats->rgb ri gi bi))
		     (color-name:canonicalize name)))
	      (else #f)))
	  (lambda (line)
	    (case (sscanf line " %[a-zA-Z0-9_] %6x %d %d %d %e %e %e %s"
			  name rgbx r g b ri gi bi junk)
	      ((8)
	       (set! method-id 'm8)
	       (list (check-match line (xrgb->color rgbx)
				  (color:sRGB r g b)
				  (floats->rgb ri gi bi))
		     (color-name:canonicalize name)))
	      (else #f)))
	  (lambda (line)
	    (case (sscanf line " %[a-zA-Z0-9] %6x %d,%d,%d" name rgbx r g b)
	      ((5)
	       (set! method-id 'm5)
	       (list (check-match line (xrgb->color rgbx) (color:sRGB r g b))
		     (color-name:canonicalize name)))
	      (else #f)))
	  (lambda (line)
	    (case (sscanf line " %[- a-zA-Z0-9_'] #%6x %d %d %d %s"
			  name rgbx r g b junk)
	      ((6 5)
	       (set! method-id 'm65)
	       (list (check-match line (xrgb->color rgbx) (color:sRGB r g b))
		     (color-name:canonicalize name)))
	      (else #f)))
	  (lambda (line)
	    (case (sscanf line " %d %d %d %[a-zA-Z0-9 ]%s" r g b name junk)
	      ((4) (set! method-id 'm4a)
	       (list (check-match line (color:sRGB r g b))
		     (color-name:canonicalize name)))
	      (else #f)))
	  (lambda (line)
	    (case (sscanf line " %[- a-zA-Z.] %d %d %d %s"
			  name r g b junk)
	      ((4) (set! method-id 'm4b)
	       (list (check-match line (color:sRGB r g b))
		     (color-name:canonicalize name)))
	      (else #f)))
	  (lambda (line)
	    (case (sscanf line "\" Resene %[^\"]\" %d %d %d %s"
			  name r g b junk)
	      ((4) (set! method-id 'm4b)
	       (list (check-match line (color:sRGB r g b))
		     (color-name:canonicalize name)))
	      (else #f)))
	  (lambda (line)
	    (case (sscanf line "\" %[^\"]\" %d %d %d %s"
			  name r g b junk)
	      ((4) (set! method-id 'm4c)
	       (list (check-match line (color:sRGB r g b))
		     (color-name:canonicalize name)))
	      (else #f)))
	  (lambda (line)
	    (case (sscanf line " %[a-zA-Z0-9_] #%x%6x%s" name rgbx junk)
	      ((2) (set! method-id 'm2a)
	       (list (check-match line (xrgb->color rgbx))
		     (color-name:canonicalize name)))
	      (else #f)))
	  (lambda (line)
	    (case (sscanf line "%[- a-zA-Z']=#%6x<br>" name rgbx)
	      ((2) (set! method-id 'm2b)
	       (let ((idx (substring? "rgb" name)))
		 (and (eqv? idx (+ -3 (string-length name)))
		      (list (check-match line (xrgb->color rgbx))
			    (color-name:canonicalize (substring name 0 idx))))))
	      (else #f)))
	  (lambda (line)
	    (case (sscanf line "\" %[^\"]\" %s" name junk)
	      ((2) (set! method-id 'm2c)
	       (let ((clr (string->color junk)))
		 (and clr (list (check-match line clr)
				(color-name:canonicalize name)))))
	      (else #f)))))
	ans))
    (define (numbered-gray? str)
      (define idx #f)
      (and (or (eqv? 0 (substring-ci? "gray" str))
	       (eqv? 0 (substring-ci? "grey" str)))
	   (eqv? 1 (sscanf (substring str 4 (string-length str))
			   "%d%s" idx str))))
    (call-with-input-file path
      (lambda (port)
	(define *idx* 0)
	(define *rcs-header* (read-line port))
	(do ((line (read-line port) (read-line port)))
	    ((eof-object? line)
	     (display "Inserted ") (display *idx*) (display "colors") (newline)
	     *rcs-header*)
	  (let ((colin (parse-rgb-line line)))
	    (cond ((equal? "" line))
		  ;;((char=? #\# (string-ref line 0)))
		  ((not colin) (write-line line))
		  ((numbered-gray? (cadr colin)))
		  (else
		   (for-each
		    (lambda (name)
		      (let ((oclin (color-table:row-retrieve name)))
			(cond
			 ((and oclin (equal? (car colin) (cadr oclin))))
			 ((not oclin)
			  (set! *idx* (+ 1 *idx*))
			  (color-table:row-insert
			   (list name (car colin) *idx*)))
			 (else (slib:warn 'collision name oclin)))))
		    (cdr colin))))))))))

;;@noindent
;;This section has detailed the procedures for creating and loading
;;color dictionaries.  So where are the dictionaries to load?
;;
;;@uref{http://swissnet.ai.mit.edu/~jaffer/Color/Dictionaries.html}
;;
;;@noindent
;;Describes and evaluates several color-name dictionaries on the web.
;;The following procedure creates a database containing two of these
;;dictionaries.

;;@body
;;Creates an @r{alist-table} relational database in @r{library-vicinity}
;;containing the @dfn{Resene} and @dfn{saturate} color-name
;;dictionaries.
;;
;;If the files @file{resenecolours.txt} and @file{saturate.txt} exist in
;;the @r{library-vicinity}, then they used as the source of color-name
;;data.  Otherwise, @0 calls url->color-dictionary with the URLs of
;;appropriate source files.
(define (make-slib-color-name-db)
  (define cndb (create-database (in-vicinity (library-vicinity) "clrnamdb.scm")
				'alist-table))
  (for-each
   (lambda (lst)
     (apply
      (lambda (url path name)
	(define filename (in-vicinity (library-vicinity) path))
	(if (file-exists? filename)
	    (file->color-dictionary filename name cndb)
	    (url->color-dictionary url name cndb)))
      lst))
   '(("http://swissnet.ai.mit.edu/~jaffer/Color/saturate.txt"
      "saturate.txt"
      saturate)
     ("http://swissnet.ai.mit.edu/~jaffer/Color/resenecolours.txt"
      "resenecolours.txt"
      resene)))
  (close-database cndb))