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
|
unit stringhelpers;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils;
function psubstr(const start,stop: pchar): string;
function cstringtostringvar(var inp: pchar): string;
function trystrtooct(const inp: string; out value: longword): boolean;
function strtooct(const inp: string): longword;
function trystrtobin(const inp: string; out value: longword): boolean;
function strtobin(const inp: string): longword;
function trystrtodec(const inp: string; out value: longword): boolean;
function strtodec(const inp: string): longword;
function trystrtohex(const inp: string; out value: longword): boolean;
function strtohex(const inp: string): longword;
function trystrtooct64(const inp: string; out value: qword): boolean;
function trystrtointvalue(const inp: string; out value: longword): boolean; overload;
function trystrtointvalue64(const inp: string; out value: qword): boolean; overload;
implementation
procedure formaterror(const value: string);
begin
raise exception.Create('Invalid number '''+value+'''.');
end;
function strtooct(const inp: string): longword;
//wandelt 1..0-string in longword)
begin
if not trystrtooct(inp,result) then begin
formaterror(inp);
end;
end;
function strtooct64(const inp: string): qword;
//wandelt 1..0-string in longword)
begin
if not trystrtooct64(inp,result) then begin
formaterror(inp);
end;
end;
function strtodec1(const inp: string; out value: longword): boolean;
begin
result:= trystrtoint(inp,integer(value));
end;
function strtodec164(const inp: string; out value: qword): boolean;
begin
result:= trystrtoint64(inp,int64(value));
end;
function strtohex1(const inp: string; out value: longword): boolean;
begin
result:= trystrtoint('$'+inp,integer(value));
end;
function strtohex164(const inp: string; out value: qword): boolean;
begin
result:= trystrtoint64('$'+inp,int64(value));
end;
function strtooct1(const inp: string; out value: longword): boolean;
var
int1: integer;
ca1: longword;
ch1: char;
begin
result:= false;
if inp <> '' then begin
value:= 0;
ca1:= 0;
for int1:= length(inp) downto 1 do begin
ch1:= inp[int1];
if (ch1 < '0') or (ch1 > '7') then begin
exit;
end;
value:= value + longword(((ord(ch1) - ord('0'))) shl ca1);
inc(ca1,3);
end;
result:= true;
end;
end;
function strtobin1(const inp: string; out value: longword): boolean;
//wandelt 1..0-string in longword)
var
int1: integer;
lwo1: longword;
begin
result:= false;
if inp <> '' then begin
value:= 0;
lwo1:= 1;
for int1:= length(inp) downto 1 do begin
if inp[int1] = '1' then begin
value:= value + lwo1;
end
else begin
if inp[int1] <> '0' then begin
exit;
end;
end;
lwo1:= lwo1 shl 1;
end;
result:= true;
end;
end;
function strtobin164(const inp: string; out value: qword): boolean;
//wandelt 1..0-string in longword)
var
int1: integer;
lwo1: qword;
begin
result:= false;
if inp <> '' then begin
value:= 0;
lwo1:= 1;
for int1:= length(inp) downto 1 do begin
if inp[int1] = '1' then begin
value:= value + lwo1;
end
else begin
if inp[int1] <> '0' then begin
exit;
end;
end;
lwo1:= lwo1 shl 1;
end;
result:= true;
end;
end;
function psubstr(const start,stop: pchar): string;
var
int1: integer;
begin
if (start = nil) or (stop = nil) then begin
result:= '';
end
else begin
int1:= stop-start;
setlength(result,int1);
move(start^,result[1],int1);
end;
end;
function cstringtostringvar(var inp: pchar): string;
const
quotechar = '"';
escapechar = '\';
var
po1,po2: pchar;
int1,int2: integer;
ch1: char;
begin
result:= '';
if inp <> nil then begin
po1:= inp;
while true do begin
while (po1^ = ' ') do begin //first quote
inc(po1);
end;
if (po1^ <> quotechar) then begin
break; //end or no start quote
end;
inc(po1);
po2:= po1; //text
while true do begin
while (po1^ <> quotechar) and (po1^ <> escapechar) do begin
if (po1^ = #0) then begin
result:= '';
inp:= nil;
exit; //error: no end quote
end;
inc(po1);
end;
int1:= po1-po2; //text length
int2:= length(result)+1;
setlength(result,length(result) + int1);
move(po2^,result[int2],int1); //add text
if po1^ = escapechar then begin
inc(po1);
case po1^ of
'a': ch1:= #$07;
'b': ch1:= #$08;
'f': ch1:= #$0c;
'n': ch1:= #$0a;
'r': ch1:= #$0d;
't': ch1:= #$09;
'v': ch1:= #$0b;
'\': ch1:= '\';
'''': ch1:= '''';
'"': ch1:= '"';
'?': ch1:= '?';
'0'..'7': begin
po2:= po1;
for int1:= 0 to 2 do begin
if (po1^ < '0') or (po1^ > '7') then begin
break;
end;
inc(po1);
end;
ch1:= char(strtooct(psubstr(po2,po1)));
dec(po1);
end;
'x','X': begin
inc(po1);
po2:= po1;
while (po1^ >= '0') and (po1^ <= '9') or
(po1^ >= 'a') and (po1^ <= 'f') or
(po1^ >= 'A') and (po1^ <= 'F') do begin
inc(po1);
end;
ch1:= char(strtohex(psubstr(po2,po1)));
dec(po1);
end;
else begin
ch1:= ' ';
end;
end;
result:= result + ch1;
inc(po1);
end
else begin
inc(po1);
break;
end;
po2:= po1; //past quote
end;
end;
inp:= po1;
end;
end;
function strtooct164(const inp: string; out value: qword): boolean;
var
int1: integer;
ca1: longword;
ch1: char;
begin
result:= false;
if inp <> '' then begin
value:= 0;
ca1:= 0;
for int1:= length(inp) downto 1 do begin
ch1:= inp[int1];
if (ch1 < '0') or (ch1 > '7') then begin
exit;
end;
value:= value + qword(((ord(ch1) - ord('0'))) shl ca1);
inc(ca1,3);
end;
result:= true;
end;
end;
function trystrtooct(const inp: string; out value: longword): boolean;
begin
result:= strtooct1(inp,value);
if not result then begin
result:= trystrtointvalue(inp,value);
end;
end;
function trystrtobin(const inp: string; out value: longword): boolean;
begin
result:= strtobin1(inp,value);
if not result then begin
result:= trystrtointvalue(inp,value);
end;
end;
function strtobin(const inp: string): longword;
//wandelt 0..1-string in longword)
begin
if not trystrtobin(inp,result) then begin
formaterror(inp);
end;
end;
function trystrtodec(const inp: string; out value: longword): boolean;
begin
result:= strtodec1(inp,value);
if not result then begin
result:= trystrtointvalue(inp,value);
end;
end;
function strtodec(const inp: string): longword;
//wandelt 0..9-string in longword)
begin
if not trystrtodec(inp,result) then begin
formaterror(inp);
end;
end;
function trystrtohex(const inp: string; out value: longword): boolean;
begin
result:= strtohex1(inp,value);
if not result then begin
result:= trystrtointvalue(inp,value);
end;
end;
function strtohex(const inp: string): longword;
begin
if not trystrtohex(inp,result) then begin
formaterror(inp);
end;
end;
function trystrtooct64(const inp: string; out value: qword): boolean;
begin
result:= strtooct164(inp,value);
if not result then begin
result:= trystrtointvalue64(inp,value);
end;
end;
function trystrtointvalue(const inp: string; out value: longword): boolean;
var
lint1: int64;
begin
result:= false;
if length(inp) > 0 then begin
case inp[1] of
'%': result:= strtobin1(copy(inp,2,length(inp)-1),value);
'&': result:= strtooct1(copy(inp,2,length(inp)-1),value);
'#': result:= strtodec1(copy(inp,2,length(inp)-1),value);
'$': result:= strtohex1(copy(inp,2,length(inp)-1),value);
else begin
if (length(inp) > 2) and
((inp[2] = 'x') or (inp[2] = 'X')) and (inp[1] = '0') then begin
result:= strtohex1(copy(inp,3,length(inp)-2),value);
end
else begin
result:= trystrtoint64(inp,lint1);
if result then begin
value:= lint1;
end;
end;
end;
end;
end;
end;
function trystrtointvalue64(const inp: string; out value: qword): boolean; overload;
var
lint1: int64;
begin
result:= false;
if length(inp) > 0 then begin
case inp[1] of
'%': result:= strtobin164(copy(inp,2,length(inp)-1),value);
'&': result:= strtooct164(copy(inp,2,length(inp)-1),value);
'#': result:= strtodec164(copy(inp,2,length(inp)-1),value);
'$': result:= strtohex164(copy(inp,2,length(inp)-1),value);
else begin
if (length(inp) > 2) and
((inp[2] = 'x') or (inp[2] = 'X')) and (inp[1] = '0') then begin
result:= strtohex164(copy(inp,3,length(inp)-2),value);
end
else begin
result:= trystrtoint64(inp,lint1);
if result then begin
value:= lint1;
end;
end;
end;
end;
end;
end;
end.
|
