summaryrefslogtreecommitdiff
path: root/iupe-hexview.lua
blob: 9928e760061e314e25b815883328a3faa83fc87b (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
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
loadmodule "luaiup"
loadmodule "luahandle"
loadmodule "lualibs"

load "iupe-dbuffer.lua"

if not iupe then iupe = {} end
if not iupep then iupep = {} end

local cursorcolors = {
    GREEN = cd.EncodeColor(0, 224, 0),
    LIGHTGREEN = cd.EncodeColor(224, 255, 224),
}

local mousecolors = {
    YELLOW = cd.EncodeColor(255, 255, 0),
    LIGHTYELLOW = cd.EncodeColor(255, 255, 192),
}

markercolors = {
    [-2] = cursorcolors.GREEN,
    [-1] = mousecolors.YELLOW,
    [0]  = cd.EncodeColor(0, 255, 178), -- 0.45
    [1]  = cd.EncodeColor(0, 255, 255), -- 0.50
    [2]  = cd.EncodeColor(0, 178, 255), -- 0.55
    [3]  = cd.EncodeColor(0, 102, 255), -- 0.60
    [4]  = cd.EncodeColor(0, 25, 255),  -- 0.65
    [5]  = cd.EncodeColor(50, 0, 255),  -- 0.70
    [6]  = cd.EncodeColor(127, 0, 255), -- 0.75
    [7]  = cd.EncodeColor(204, 0, 255), -- 0.80
    [8]  = cd.EncodeColor(255, 0, 229), -- 0.85
    [9]  = cd.EncodeColor(255, 0, 152), -- 0.90
    [10] = cd.EncodeColor(255, 0, 76),  -- 0.95
}

iupep.hexview = {
    gridsize = { x = 8, y = 14 },
    
    printgrid = function (self, msg, y, x)
        local cvdb = self.cvdb
        if not x then x = self.textcursor.x end
        if not y then y = self.textcursor.y end
        cvdb:Foreground(cd.BLACK)
        cvdb:Text(x * self.gridsize.x, self.height - self.gridsize.y * (y + 1), msg)
        self.textcursor.x = x + msg:len()
        self.textcursor.y = y
    end,
    
    colorgrid = function (self, color, len, y, x, height)
        local cvdb = self.cvdb
        if not len then len = 1 end
        if not height then height = 1 end
        if not x then x = self.textcursor.x end
        if not y then y = self.textcursor.y end
        cvdb:Foreground(color)
        local xmin, xmax, ymin, ymax = x * self.gridsize.x, (x + len) * self.gridsize.x - 1, self.height - self.gridsize.y * (y + 1 - height) - 2, self.height - self.gridsize.y * (y + 1) - 1
        cvdb:Box(xmin, xmax, ymin, ymax)
    end,
    
    byte2char = function(self, b)
        if b >= 32 and b <= 127 then
            return string.char(b)
        else
            return "."
        end
    end,

    draw = function (self)
        local cvdb = self.cvdb
        if not cvdb then return iup.DEFAULT end
        cvdb:Clear()
        local handle = self.handle
        local filecursor = self.filecursor + 0
        local nbbytes = self.nbbytes + 0
        local filesize = self.filesize + 0
        local oldfilecursor = self.oldfilecursor + 0
        local buf = self.buf
        local max_bytes = math.max(math.min(filesize - filecursor, nbbytes), 0)
        local old_max_bytes = (self.old_max_bytes or -1) + 0
        if handle then
            handle:seek(filecursor)
            if ((filecursor ~= oldfilecursor or max_bytes ~= old_max_bytes) and max_bytes ~= 0) or not buf then
                if buf then buf:destroy() end
                buf = Buffer(true)
                self.buf = buf
                handle:copyto(buf, max_bytes)
                self.oldfilecursor = filecursor
                self.old_max_bytes = max_bytes
            else
                buf:seek(0)
            end
        end
        local line = 0
        local rcursor = 0
        local b
        local kline, kcolumn
        local mline, mcolumn
        local krcursor = self.kcursor - filecursor
        local mrcursor = self.mcursor - filecursor
        local columns = self.columns + 0
        local nblines = self.nblines + 0
        kline = math.floor(krcursor / columns)
        kcolumn = krcursor % columns
        mline = math.floor(mrcursor / columns)
        mcolumn = mrcursor % columns

        if self.mcursor ~= "-1" then
            self:colorgrid(mousecolors.LIGHTYELLOW, 12 + columns * 4, mline, 0)
            self:colorgrid(mousecolors.LIGHTYELLOW, 2, nblines - 1, mcolumn * 3 + 10, nblines)
            self:colorgrid(mousecolors.LIGHTYELLOW, 1, nblines - 1, mcolumn + 12 + columns * 3, nblines)
            self:colorgrid(mousecolors.YELLOW, 2, mline, mcolumn * 3 + 10)
            self:colorgrid(mousecolors.YELLOW, 1, mline, mcolumn + 12 + columns * 3)
        end

        self:colorgrid(cursorcolors.LIGHTGREEN, 12 + columns * 4, kline, 0)
        self:colorgrid(cursorcolors.LIGHTGREEN, 2, nblines - 1, kcolumn * 3 + 10, nblines)
        self:colorgrid(cursorcolors.LIGHTGREEN, 1, nblines - 1, kcolumn + 12 + columns * 3, nblines)
        self:colorgrid(cursorcolors.GREEN, 2, kline, kcolumn * 3 + 10)
        self:colorgrid(cursorcolors.GREEN, 1, kline, kcolumn + 12 + columns * 3)
        
        local marker, len, mlen
        for i = 0, 10 do
            marker = self.markers[i] or -1
            marker = marker - filecursor
            mlen = self.markerslengths[i]
            if marker >= 0 and self.showmarkerslengths and mlen and mlen > 0 then
                len = math.min(mlen, nbbytes - marker)
            elseif marker >= 0 and marker < nbbytes then
                len = 1
            else
                len = 0
            end
            for j = 1, len do
                mline = math.floor(marker / columns)
                mcolumn = marker % columns
                self:colorgrid(markercolors[i], 2, mline, mcolumn * 3 + 10)
                self:colorgrid(markercolors[i], 1, mline, mcolumn + 12 + columns * 3)
                marker = marker + 1
            end
        end
        
        while rcursor < max_bytes do
            local dstring = ""
            self:printgrid(hex(buf:tell() + filecursor, "%08x  "), line, 0)
            for c = 1, columns do
                b = buf:readU8()
                self:printgrid(hex(b, "%02x "))
                dstring = dstring .. self:byte2char(b)
                rcursor = rcursor + 1
                if rcursor >= max_bytes then break end
            end
            self:printgrid(dstring, line, 12 + columns * 3)
            line = line + 1
        end
        
        cvdb:Flush()
        
        return iup.DEFAULT
    end,
    
    updatescrollbar = function (self)
        self.ymax = math.floor(self.filesize / self.columns)
        self.dy = 1
        self.posy = math.floor(self.filecursor / self.columns)
        iup.Update(self)
    end,
    
    resize_cb = function (self, width, height)
        local displaylines = self.displaylines + 0
        self.nblines = displaylines > 0 and displaylines or math.floor(height / self.gridsize.y)
        self.nbbytes = self.nblines * self.columns
        self:updatescrollbar()
        iupep.dbuffer.resize_cb(self, width, height)
    end,

    keypress_cb = function (self, c, press)
        if press == 0 then return iup.DEFAULT end
        local kaction = false
        local raction = false
        local kcursor = self.kcursor + 0
        local columns = self.columns + 0
        local filesize = self.filesize + 0
        local filecursor = self.filecursor + 0
        local nbbytes = self.nbbytes + 0
        if c == iup.K_UP then
            kaction = true
            kcursor = math.max(kcursor - columns, 0)
        elseif c == iup.K_DOWN then
            kaction = true
            kcursor = math.min(kcursor + columns, filesize - 1)
        elseif c == iup.K_LEFT then
            kaction = true
            kcursor = math.max(kcursor - 1, 0)
        elseif c == iup.K_RIGHT then
            kaction = true
            kcursor = math.min(kcursor + 1, filesize - 1)
        elseif c == iup.K_PGUP then
            kaction = true
            kcursor = math.max(kcursor - nbbytes + columns, 0)
        elseif c == iup.K_PGDN then
            kaction = true
            kcursor = math.min(kcursor + nbbytes - columns, filesize - 1)
        elseif c == iup.K_HOME then
            kaction = true
            kcursor = kcursor - (kcursor % columns)
        elseif c == iup.K_END then
            kaction = true
            kcursor = math.min(kcursor + columns - (kcursor % columns) - 1, filesize - 1)
        elseif c == iup.K_cUP then
            kaction = true
            if filecursor - columns >= 0 then
                kcursor = kcursor - columns
                filecursor = filecursor - columns
            end
        elseif c == iup.K_cDOWN then
            kaction = true
            if filecursor + columns < filesize then
                kcursor = kcursor + columns
                filecursor = filecursor + columns
            end
        elseif c == iup.K_cLEFT then
            kaction = true
            kcursor = math.max(kcursor - 1, 0)
            filecursor = math.max(filecursor - 1, 0)
        elseif c == iup.K_cRIGHT then
            kaction = true
            kcursor = math.min(kcursor + 1, filesize - 1)
            filecursor = math.min(filecursor + 1, filesize)
        elseif c == iup.K_cPGUP then
            kaction = true
            if filecursor - nbbytes >= 0 then
                kcursor = math.max(kcursor - nbbytes, 0)
                filecursor = math.max(filecursor - nbbytes, 0)
            end
        elseif c == iup.K_cPGDN then
            kaction = true
            if filecursor + nbbytes < filesize then
                kcursor = math.min(kcursor + nbbytes, filesize - 1)
                filecursor = math.min(filecursor + nbbytes, filesize)
            end
        elseif c == iup.K_cHOME then
            kaction = true
            kcursor = 0
        elseif c == iup.K_cEND then
            kaction = true
            kcursor = filesize - 1
        elseif c == iup.K_mLEFT then
            raction = true
            columns = columns - 1
        elseif c == iup.K_mRIGHT then
            raction = true
            columns = columns + 1
        elseif c == iup.K_mUP then
            raction = true
            filecursor = math.max(filecursor - columns, 0)
        elseif c == iup.K_mDOWN then
            raction = true
            filecursor = math.min(filecursor + columns, filesize)
        elseif c == iup.K_mPGUP then
            raction = true
            filecursor = math.max(filecursor - nbbytes, 0)
        elseif c == iup.K_mPGDN then
            raction = true
            filecursor = math.min(filecursor + nbbytes, filesize)
        elseif c == iup.K_1 then
            kaction = true
            local m = self.markers[1]
            if m ~= -1 then
                kcursor = m
            end
        elseif c == iup.K_2 then
            kaction = true
            local m = self.markers[2]
            if m ~= -1 then
                kcursor = m
            end
        elseif c == iup.K_3 then
            kaction = true
            local m = self.markers[3]
            if m ~= -1 then
                kcursor = m
            end
        elseif c == iup.K_4 then
            kaction = true
            local m = self.markers[4]
            if m ~= -1 then
                kcursor = m
            end
        elseif c == iup.K_5 then
            kaction = true
            local m = self.markers[5]
            if m ~= -1 then
                kcursor = m
            end
        elseif c == iup.K_6 then
            kaction = true
            local m = self.markers[6]
            if m ~= -1 then
                kcursor = m
            end
        elseif c == iup.K_7 then
            kaction = true
            local m = self.markers[7]
            if m ~= -1 then
                kcursor = m
            end
        elseif c == iup.K_8 then
            kaction = true
            local m = self.markers[8]
            if m ~= -1 then
                kcursor = m
            end
        elseif c == iup.K_9 then
            kaction = true
            local m = self.markers[9]
            if m ~= -1 then
                kcursor = m
            end
        elseif c == iup.K_0 then
            kaction = true
            local m = self.markers[10]
            if m ~= -1 then
                kcursor = m
            end
        elseif c == iup.K_m1 then
            kaction = true
            self.markers[1] = kcursor
        elseif c == iup.K_m2 then
            kaction = true
            self.markers[2] = kcursor
        elseif c == iup.K_m3 then
            kaction = true
            self.markers[3] = kcursor
        elseif c == iup.K_m4 then
            kaction = true
            self.markers[4] = kcursor
        elseif c == iup.K_m5 then
            kaction = true
            self.markers[5] = kcursor
        elseif c == iup.K_m6 then
            kaction = true
            self.markers[6] = kcursor
        elseif c == iup.K_m7 then
            kaction = true
            self.markers[7] = kcursor
        elseif c == iup.K_m8 then
            kaction = true
            self.markers[8] = kcursor
        elseif c == iup.K_m9 then
            kaction = true
            self.markers[9] = kcursor
        elseif c == iup.K_m0 then
            kaction = true
            self.markers[10] = kcursor
        elseif c == iup.K_c1 then
            kaction = true
            self.markers[1] = nil
        elseif c == iup.K_c2 then
            kaction = true
            self.markers[2] = nil
        elseif c == iup.K_c3 then
            kaction = true
            self.markers[3] = nil
        elseif c == iup.K_c4 then
            kaction = true
            self.markers[4] = nil
        elseif c == iup.K_c5 then
            kaction = true
            self.markers[5] = nil
        elseif c == iup.K_c6 then
            kaction = true
            self.markers[6] = nil
        elseif c == iup.K_c7 then
            kaction = true
            self.markers[7] = nil
        elseif c == iup.K_c8 then
            kaction = true
            self.markers[8] = nil
        elseif c == iup.K_c9 then
            kaction = true
            self.markers[9] = nil
        elseif c == iup.K_c0 then
            kaction = true
            self.markers[10] = nil
        elseif c == iup.K_SP then
            kaction = true
        end
        if kaction then
            while kcursor < filecursor do filecursor = filecursor - columns end
            while (kcursor - filecursor) >= nbbytes do filecursor = filecursor + columns end
            filecursor = math.min(math.max(filecursor, 0), filesize)
            self.kcursor = kcursor
            self.filecursor = filecursor
            self.columns = columns
            self:setcursor()
            return iup.IGNORE
        end
        if raction then
            self.filecursor = filecursor
            self:updatescrollbar()
            self:updatecolumns(columns)
            self:draw()
            return iup.IGNORE
        end
        return iup.DEFAULT
    end,
    
    updatehandle = function (self, handle)
        self.handle = handle
        local filesize = handle and handle:getsize() or 0
        if filesize < 0 then self.handle = nil filesize = 0 end
        self.filesize = filesize
        self.old_max_bytes = -1
        self.old_filecursor = -1
        self:updatescrollbar()
        self:draw()
        for _, v in ipairs(self.cbs) do
            v.cb(v.opaque, self, true)
        end
    end,
    
    map_cb = function (self)
        iupep.dbuffer.map_cb(self)
        local cvdb = self.cvdb
        if not cvdb then return iup.DEFAULT end
        cvdb:Font("Courier", cd.PLAIN, -self.gridsize.y)
        -- self.rastersize = (self.gridsize.x * (self.columns * 4 + 14)) .. "x" -- will not allow the control to be shrinked.
        -- self.gridsize.x = cvdb:GetFontDim() -- doesn't work as expected
    end,
    
    setcursor = function (self, markerid, value)
        if markerid then
            markerid = markerid + 0
            if markerid >= 0 and markerid <= 10 then
                self.markers[markerid] = value + 0
            elseif markerid == -2 then
                self.kcursor = value + 0
                self:keypress_cb(iup.K_SP, 1)
            end
        end
        for _, v in ipairs(self.cbs) do
            v.cb(v.opaque, self)
        end
        self:updatescrollbar()
        self:draw()
    end,
    
    registercb = function (self, cb, opaque)
        table.insert(self.cbs, { cb = cb, opaque = opaque })
    end,
    
    wheel_cb = function (self, delta, x, y, status)
        if delta > 0 then
            for i = 1, delta do self:keypress_cb(iup.K_cPGUP) end
        else
            for i = 1, -delta do self:keypress_cb(iup.K_cPGDN) end
        end
    end,
    
    scroll_cb = function (self, op, posx, posy)
        if op == iup.SBUP then
            self:keypress_cb(iup.K_mUP, 1)
        elseif op == iup.SBDN then
            self:keypress_cb(iup.K_mDOWN, 1)
        elseif op == iup.SBPGUP then
            self:keypress_cb(iup.K_mPGUP, 1)
        elseif op == iup.SBPGDN then
            self:keypress_cb(iup.K_mPGDN, 1)
        else
            local columns = self.columns + 0
            local startoffset = self.filecursor % columns
            self.filecursor = math.min(math.max(math.floor(self.posy) * columns + startoffset, 0), self.filesize)
            self:draw()
        end
        return iup.DEFAULT
    end,
    
    motion_cb = function (self, x, y, status)
        local r = self:resolvepos(x, y)
        if r ~= -1 then self.mcursor = r end
        self:setcursor()
        return iup.DEFAULT
    end,
    
    resolvepos = function (self, x, y)
        local line = math.floor(y / self.gridsize.y)
        local column = math.floor(x / self.gridsize.x)
        local filecursor = self.filecursor + 0
        local columns = self.columns + 0
        
        -- offset display
        if column <= 7 then
            return filecursor + columns * line
        end
        
        -- gap 1
        if column <= 9 then return -1 end
        
        -- hex display
        if column <= (columns * 3 + 10) then
            -- interhex gap
            if (column - 10) % 3 == 2 then return -1 end
            return math.floor((column - 10) / 3) + filecursor + columns * line
        end
        
        -- gap 2
        if column <= (columns * 3 + 11) then return -1 end
        
        -- ascii display
        if column <= (columns * 4 + 11) then
            return column - columns * 3 - 12 + filecursor + columns * line
        end
        
        return -1
    end,
    
    button_cb = function (self, button, pressed, x, y, status)
        if pressed == 1 then return iup.DEFAULT end
        if button == iup.BUTTON1 then
            local newpos = self:resolvepos(x, y)
            if newpos ~= -1 then
                self.kcursor = newpos
                self:setcursor()
                return iup.IGNORE
            end
        elseif button == iup.BUTTON3 then
            local newpos = self:resolvepos(x, y)
            if newpos ~= -1 then
                self.markers[0] = newpos
                self:setcursor()
                return iup.IGNORE
            end
        end
        return iup.DEFAULT
    end,
    
    updategridsize = function (self, gridsize)
        self.gridsize = gridsize or iupep.hexview.gridsize
        self:resize_cb(self.width, self.height)
    end,
    
    updatecolumns = function (self, columns)
        self.columns = columns or 16
        self:resize_cb(self.width, self.height)
    end,

    create = function (tab)
        local handle = tab.handle
        local columns = tab.columns
        local gridsize = tab.gridsize
        tab.handle = nil
        tab.columns = nil
        tab.gridsize = nil
        tab.cursor = "TEXT"
        tab.expand = "Yes"
        tab.border = "No"
        tab.minsize = "0x0"
        tab.size = "0x0"
        tab.scrollbar = "vertical"
        local r = iup.canvas(tab)
        r.action = iupep.dbuffer.action
        r.draw = iupep.hexview.draw
        r.resize_cb = iupep.hexview.resize_cb
        r.keypress_cb = iupep.hexview.keypress_cb
        r.button_cb = iupep.hexview.button_cb
        r.map_cb = iupep.hexview.map_cb
        r.unmap_cb = iupep.dbuffer.unmap_cb
        r.scroll_cb = iupep.hexview.scroll_cb
        r.motion_cb = iupep.hexview.motion_cb
        r.wheel_cb = iupep.hexview.wheel_cb
        r.printgrid = iupep.hexview.printgrid
        r.colorgrid = iupep.hexview.colorgrid
        r.updatehandle = iupep.hexview.updatehandle
        r.updategridsize = iupep.hexview.updategridsize
        r.updatecolumns = iupep.hexview.updatecolumns
        r.updatescrollbar = iupep.hexview.updatescrollbar
        r.resolvepos = iupep.hexview.resolvepos
        r.setcursor = iupep.hexview.setcursor
        r.registercb = iupep.hexview.registercb
        r.byte2char = iupep.hexview.byte2char
        r.cbs = {}
        r.handle = handle
        r.columns = columns or 16
        r.filecursor = 0
        r.oldfilecursor = -1
        r.kcursor = 0
        r.filesize = handle and handle:getsize() or 0
        r.mcursor = -1
        r.markers = {}
        r.markerslengths = {}
        r.showmarkerslengths = false
        r.displaylines = 0
        for i = 0, 10 do r.markers[i] = -1 end
        r.gridsize = gridsize or iupep.hexview.gridsize
        r.textcursor = { x = 0, y = 0 }
        return r
    end,
}

iupe.hexview = iupep.hexview.create