1/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <array_length.h>
19#ifdef BSD
20#include </usr/include/stdio.h>
21#else
22#include <stdio.h>
23#endif
24#include <math.h>
25#include <stdlib.h>
26#include <string.h>
27
28
29int
30main (int argc, char **argv)
31{
32 char buf[BUFSIZ];
33 FILE *in = stdin, *out = stdout;
34 int x;
35 int result = 0;
36
37 if (sscanf ("0", "%d", &x) != 1)
38 {
39 fputs ("test failed!\n", stdout);
40 result = 1;
41 }
42
43 if (sscanf ("08905x", "%9[0-9]", buf) != 1
44 || strcmp (buf, "08905") != 0)
45 {
46 fputs ("test failed!\n", stdout);
47 result = 1;
48 }
49
50 if (sscanf ("", "%10[a-z]", buf) != EOF)
51 {
52 fputs ("test failed!\n", stdout);
53 result = 1;
54 }
55
56 sscanf ("conversion] Zero flag Ze]ro#\n", "%*[^]] %[^#]\n", buf);
57 if (strcmp (buf, "] Zero flag Ze]ro") != 0)
58 {
59 fputs ("test failed!\n", stdout);
60 result = 1;
61 }
62
63 if (argc == 2 && !strcmp (argv[1], "-opipe"))
64 {
65 out = popen (command: "/bin/cat", modes: "w");
66 if (out == NULL)
67 {
68 perror ("popen: /bin/cat");
69 result = 1;
70 }
71 }
72 else if (argc == 3 && !strcmp (argv[1], "-ipipe"))
73 {
74 sprintf (buf, "/bin/cat %s", argv[2]);
75 in = popen (command: buf, modes: "r");
76 if (in == NULL)
77 {
78 perror ("popen: /bin/cat");
79 result = 1;
80 }
81 }
82
83 {
84 char name[50];
85 fprintf (out,
86 "sscanf (\"thompson\", \"%%s\", name) == %d, name == \"%s\"\n",
87 sscanf ("thompson", "%s", name),
88 name);
89 if (strcmp (name, "thompson") != 0)
90 {
91 fputs ("test failed!\n", stdout);
92 result = 1;
93 }
94 }
95
96 fputs ("Testing scanf (vfscanf)\n", out);
97
98 fputs ("Test 1:\n", out);
99 {
100 int n, i;
101 float x;
102 char name[50];
103 n = fscanf (stream: in, format: "%d%f%s", &i, &x, name);
104 fprintf (out, "n = %d, i = %d, x = %f, name = \"%.50s\"\n",
105 n, i, x, name);
106 if (n != 3 || i != 25 || x != 5.432F || strcmp (name, "thompson"))
107 {
108 fputs ("test failed!\n", stdout);
109 result = 1;
110 }
111 }
112 fprintf (out, "Residual: \"%s\"\n", fgets (s: buf, n: sizeof (buf), stream: in));
113 if (strcmp (buf, "\n"))
114 {
115 fputs ("test failed!\n", stdout);
116 result = 1;
117 }
118 fputs ("Test 2:\n", out);
119 {
120 int i;
121 float x;
122 char name[50];
123 (void) fscanf (stream: in, format: "%2d%f%*d %[0123456789]", &i, &x, name);
124 fprintf (out, "i = %d, x = %f, name = \"%.50s\"\n", i, x, name);
125 if (i != 56 || x != 789.0F || strcmp (name, "56"))
126 {
127 fputs ("test failed!\n", stdout);
128 result = 1;
129 }
130 }
131 fprintf (out, "Residual: \"%s\"\n", fgets (s: buf, n: sizeof (buf), stream: in));
132 if (strcmp (buf, "a72\n"))
133 {
134 fputs ("test failed!\n", stdout);
135 result = 1;
136 }
137 fputs ("Test 3:\n", out);
138 {
139 static struct {
140 int count;
141 float quant;
142 const char *units;
143 const char *item;
144 } ok[] = {
145 { 3, 2.0F, "quarts", "oil" },
146 { 2, -12.8F, "degrees", "" },
147 { 0, 0.0F, "", "" },
148 { 3, 10.0F, "LBS", "fertilizer" },
149 { 3, 100.0F, "rgs", "energy" },
150 { -1, 0.0F, "", "" }};
151 size_t rounds = 0;
152 float quant;
153 char units[21], item[21];
154 while (!feof (stream: in) && !ferror (stream: in))
155 {
156 int count;
157
158 if (rounds++ >= array_length (ok))
159 {
160 fputs ("test failed!\n", stdout);
161 result = 1;
162 }
163
164 quant = 0.0;
165 units[0] = item[0] = '\0';
166 count = fscanf (stream: in, format: "%f%20s of %20s", &quant, units, item);
167 (void) fscanf (stream: in, format: "%*[^\n]");
168 fprintf (out, "count = %d, quant = %f, item = %.21s, units = %.21s\n",
169 count, quant, item, units);
170 if (count != ok[rounds-1].count || quant != ok[rounds-1].quant
171 || strcmp (item, ok[rounds-1].item)
172 || strcmp (units, ok[rounds-1].units))
173 {
174 fputs ("test failed!\n", stdout);
175 result = 1;
176 }
177 }
178 }
179 buf[0] = '\0';
180 fprintf (out, "Residual: \"%s\"\n", fgets (s: buf, n: sizeof (buf), stream: in));
181 if (strcmp (buf, ""))
182 {
183 fputs ("test failed!\n", stdout);
184 result = 1;
185 }
186
187 if (out != stdout)
188 pclose (stream: out);
189
190 fputs ("Test 4:\n", out);
191 {
192 int res, val, n;
193
194 res = sscanf ("-242", "%3o%n", &val, &n);
195 printf (format: "res = %d, val = %d, n = %d\n", res, val, n);
196 if (res != 1 || val != -20 || n != 3)
197 {
198 fputs ("test failed!\n", stdout);
199 result = 1;
200 }
201 }
202
203 fputs ("Test 5:\n", out);
204 {
205 double a = 0, b = 0;
206 int res, n;
207
208 res = sscanf ("1234567", "%3lg%3lg%n", &a, &b, &n);
209 printf (format: "res = %d, a = %g, b = %g, n = %d\n", res, a, b, n);
210
211 if (res != 2 || a != 123 || b != 456 || n != 6)
212 {
213 fputs ("test failed!\n", stdout);
214 result = 1;
215 }
216
217 res = sscanf ("0", "%lg", &a);
218 printf (format: "res = %d, a = %g\n", res, a);
219
220 if (res != 1 || a != 0)
221 {
222 fputs ("test failed!\n", stdout);
223 result = 1;
224 }
225
226 res = sscanf ("1e3", "%lg%n", &a, &n);
227 printf (format: "res = %d, a = %g, n = %d\n", res, a, n);
228
229 if (res != 1 || a != 1000 || n != 3)
230 {
231 fputs ("test failed!\n", stdout);
232 result = 1;
233 }
234 }
235
236 fputs ("Test 6:\n", stdout);
237 {
238 char *p = (char *) -1;
239 int res;
240
241 sprintf (buf, "%p", NULL);
242 res = sscanf (buf, "%p", &p);
243 printf (format: "sscanf (\"%s\", \"%%p\", &p) = %d, p == %p\n", buf, res, p);
244
245 if (res != 1 || p != NULL)
246 {
247 fputs ("test failed!\n", stdout);
248 result = 1;
249 }
250 }
251
252 fputs ("Test 7:\n", stdout);
253 {
254 short a[2] = { -1, -1 };
255 int res;
256
257 res = sscanf ("32767 1234", "%hd %hd", &a[0], &a[1]);
258 printf (format: "res = %d, a[0] = %d, a[1] = %d\n", res, a[0], a[1]);
259
260 if (res != 2 || a[0] != 32767 || a[1] != 1234)
261 {
262 fputs ("test failed!\n", stdout);
263 result = 1;
264 }
265 }
266
267 fputs ("Test 8:\n", stdout);
268 {
269 double d = 123456.789;
270 int res;
271
272 res = sscanf ("0x1234", "%lf", &d);
273 printf (format: "res = %d, d = %f\n", res, d);
274
275 if (res != 1 || d != 4660)
276 {
277 fputs ("test failed!\n", stdout);
278 result = 1;
279 }
280 }
281
282 fputs ("Test 9:\n", stdout);
283 {
284 /* From PR libc/1313 reported by Ben Caradoc-Davies <bmcd@physics.otago.ac.nz>. */
285 float value;
286 int res;
287
288 res = sscanf ("0123", "%2f", &value);
289 if (res != 1 || value != 1.0)
290 {
291 fputs ("test failed!\n", stdout);
292 result = 1;
293 }
294 }
295
296 fputs ("Test 10:\n", stdout);
297 {
298 float value;
299 int res;
300
301 res = sscanf ("--", "%f", &value);
302 if (res != 0)
303 {
304 fputs ("test failed!\n", stdout);
305 result = 1;
306 }
307 }
308
309 fputs ("Test 11:\n", stdout);
310 {
311 char uart[50];
312 int res;
313
314 res = sscanf ("uart:16550A tx:0", "uart:%31s tx:%*u", uart);
315 if (res != 1)
316 {
317 fputs ("test failed!\n", stdout);
318 result = 1;
319 }
320 }
321
322 fputs ("Test 12:\n", stdout);
323 {
324 char uart[50];
325 int res;
326
327 res = sscanf ("uart:16550A", "uart:%31s tx:%*u", uart);
328 if (res != 1)
329 {
330 fputs ("test failed!\n", stdout);
331 result = 1;
332 }
333 }
334
335 fputs ("Test 13:\n", stdout);
336 {
337 float value;
338 int res;
339
340 res = sscanf ("-InF", "%f", &value);
341 if (res != 1 || isinf (value) != -1)
342 {
343 fputs ("test failed!\n", stdout);
344 result = 1;
345 }
346
347 res = sscanf ("+InfiNiTY", "%f", &value);
348 if (res != 1 || isinf (value) != 1)
349 {
350 fputs ("test failed!\n", stdout);
351 result = 1;
352 }
353 }
354
355 return result;
356}
357

source code of glibc/stdio-common/tstscanf.c