1 /* $NetBSD: t_humanize_number.c,v 1.9 2017/01/10 15:20:44 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2010, 2011 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <atf-c.h> 30 31 #include <err.h> 32 #include <inttypes.h> 33 #include <stdarg.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <util.h> 38 39 const struct hnopts { 40 size_t ho_len; 41 int64_t ho_num; 42 const char *ho_suffix; 43 int ho_scale; 44 int ho_flags; 45 int ho_retval; /* expected return value */ 46 const char *ho_retstr; /* expected string in buffer */ 47 } hnopts[] = { 48 /* 49 * Rev. 1.6 produces "10.0". 50 */ 51 { 5, 10737418236ULL * 1024, "", 52 HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL, 3, "10T" }, 53 54 { 5, 10450000, "", 55 HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL, 3, "10M" }, 56 { 5, 10500000, "", /* just for reference */ 57 HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL, 3, "10M" }, 58 59 /* 60 * Trailing space. Rev. 1.7 produces "1 ". 61 */ 62 { 5, 1, "", 0, HN_NOSPACE, 1, "1" }, 63 64 { 5, 1, "", 0, 0, 2, "1 " }, /* just for reference */ 65 { 5, 1, "", 0, HN_B, 3, "1 B" }, /* and more ... */ 66 { 5, 1, "", 0, HN_DECIMAL, 2, "1 " }, 67 { 5, 1, "", 0, HN_NOSPACE | HN_B, 2, "1B" }, 68 { 5, 1, "", 0, HN_B | HN_DECIMAL, 3, "1 B" }, 69 { 5, 1, "", 0, HN_NOSPACE | HN_B | HN_DECIMAL, 2, "1B" }, 70 71 /* 72 * Space and HN_B. Rev. 1.7 produces "1B". 73 */ 74 { 5, 1, "", HN_AUTOSCALE, HN_B, 3, "1 B" }, 75 { 5, 1000, "", /* just for reference */ 76 HN_AUTOSCALE, HN_B, 3, "1 K" }, 77 78 /* 79 * Truncated output. Rev. 1.7 produces "1.0 K". 80 */ 81 #ifndef __FreeBSD__ 82 { 6, 1000, "A", HN_AUTOSCALE, HN_DECIMAL, -1, "" }, 83 84 /* 85 * Failure case reported by Greg Troxel <gdt@NetBSD.org>. 86 * Rev. 1.11 incorrectly returns 5 with filling the buffer 87 * with "1000". 88 */ 89 { 5, 1048258238, "", 90 HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL, 4, "1.0G" }, 91 /* Similar case it prints 1000 where it shouldn't */ 92 { 5, 1023488, "", 93 HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL, 4, "1.0M" }, 94 #endif 95 { 5, 1023999, "", 96 HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL, 4, "1.0M" }, 97 }; 98 99 struct hnflags { 100 int hf_flags; 101 const char *hf_name; 102 }; 103 104 const struct hnflags scale_flags[] = { 105 { HN_GETSCALE, "HN_GETSCALE" }, 106 { HN_AUTOSCALE, "HN_AUTOSCALE" }, 107 }; 108 const struct hnflags normal_flags[] = { 109 { HN_DECIMAL, "HN_DECIMAL" }, 110 { HN_NOSPACE, "HN_NOSPACE" }, 111 { HN_B, "HN_B" }, 112 { HN_DIVISOR_1000, "HN_DIVISOR_1000" }, 113 }; 114 115 const char *formatflags(char *, size_t, const struct hnflags *, size_t, int); 116 void newline(void); 117 void w_printf(const char *, ...) __printflike(1, 2); 118 int main(int, char *[]); 119 120 const char * 121 formatflags(char *buf, size_t buflen, const struct hnflags *hfs, 122 size_t hfslen, int flags) 123 { 124 const struct hnflags *hf; 125 char *p = buf; 126 ssize_t len = buflen; 127 unsigned int i, found; 128 int n; 129 130 if (flags == 0) { 131 snprintf(buf, buflen, "0"); 132 return (buf); 133 } 134 for (i = found = 0; i < hfslen && flags & ~found; i++) { 135 hf = &hfs[i]; 136 if (flags & hf->hf_flags) { 137 found |= hf->hf_flags; 138 n = snprintf(p, len, "|%s", hf->hf_name); 139 if (n >= len) { 140 p = buf; 141 len = buflen; 142 /* Print `flags' as number */ 143 goto bad; 144 } 145 p += n; 146 len -= n; 147 } 148 } 149 flags &= ~found; 150 if (flags) 151 bad: 152 snprintf(p, len, "|0x%x", flags); 153 return (*buf == '|' ? buf + 1 : buf); 154 } 155 156 static int col, bol = 1; 157 void 158 newline(void) 159 { 160 161 fprintf(stderr, "\n"); 162 col = 0; 163 bol = 1; 164 } 165 166 void 167 w_printf(const char *fmt, ...) 168 { 169 char buf[80]; 170 va_list ap; 171 int n; 172 173 va_start(ap, fmt); 174 if (col >= 0) { 175 n = vsnprintf(buf, sizeof(buf), fmt, ap); 176 if (n >= (int)sizeof(buf)) { 177 col = -1; 178 goto overflow; 179 } else if (n == 0) 180 goto out; 181 182 if (!bol) { 183 if (col + n > 75) 184 fprintf(stderr, "\n "), col = 4; 185 else 186 fprintf(stderr, " "), col++; 187 } 188 fprintf(stderr, "%s", buf); 189 col += n; 190 bol = 0; 191 } else { 192 overflow: 193 vfprintf(stderr, fmt, ap); 194 } 195 out: 196 va_end(ap); 197 } 198 199 ATF_TC(humanize_number_basic); 200 ATF_TC_HEAD(humanize_number_basic, tc) 201 { 202 203 atf_tc_set_md_var(tc, "descr", "Test humanize_number(3)"); 204 } 205 206 ATF_TC_BODY(humanize_number_basic, tc) 207 { 208 char fbuf[128]; 209 const struct hnopts *ho; 210 char *buf = NULL; 211 size_t buflen = 0; 212 unsigned int i; 213 int rv = 0; 214 215 for (i = 0; i < __arraycount(hnopts); i++) { 216 ho = &hnopts[i]; 217 if (buflen < ho->ho_len) { 218 buflen = ho->ho_len; 219 buf = realloc(buf, buflen); 220 if (buf == NULL) 221 atf_tc_fail("realloc(..., %zu) failed", buflen); 222 } 223 224 rv = humanize_number(buf, ho->ho_len, ho->ho_num, 225 ho->ho_suffix, ho->ho_scale, ho->ho_flags); 226 227 if (rv == ho->ho_retval && 228 (rv == -1 || strcmp(buf, ho->ho_retstr) == 0)) 229 continue; 230 231 w_printf("humanize_number(\"%s\", %zu, %" PRId64 ",", 232 ho->ho_retstr, ho->ho_len, ho->ho_num); 233 w_printf("\"%s\",", ho->ho_suffix); 234 w_printf("%s,", formatflags(fbuf, sizeof(fbuf), scale_flags, 235 sizeof(scale_flags) / sizeof(scale_flags[0]), 236 ho->ho_scale)); 237 w_printf("%s)", formatflags(fbuf, sizeof(fbuf), normal_flags, 238 sizeof(normal_flags) / sizeof(normal_flags[0]), 239 ho->ho_flags)); 240 w_printf("= %d,", ho->ho_retval); 241 w_printf("but got"); 242 w_printf("%d/[%s]", rv, rv == -1 ? "" : buf); 243 newline(); 244 atf_tc_fail_nonfatal("Failed for table entry %d", i); 245 } 246 free(buf); 247 } 248 249 ATF_TC(humanize_number_big); 250 ATF_TC_HEAD(humanize_number_big, tc) 251 { 252 253 atf_tc_set_md_var(tc, "descr", "Test humanize " 254 "big numbers (PR lib/44097)"); 255 } 256 257 ATF_TC_BODY(humanize_number_big, tc) 258 { 259 char buf[1024]; 260 int rv; 261 262 /* 263 * Seems to work. 264 */ 265 (void)memset(buf, 0, sizeof(buf)); 266 267 rv = humanize_number(buf, 10, 10000, "", HN_AUTOSCALE, HN_NOSPACE); 268 269 ATF_REQUIRE(rv != -1); 270 ATF_CHECK_STREQ(buf, "10000"); 271 272 /* 273 * A bogus value with large number. 274 */ 275 (void)memset(buf, 0, sizeof(buf)); 276 277 rv = humanize_number(buf, 10, INT64_MAX, "", HN_AUTOSCALE, HN_NOSPACE); 278 279 ATF_REQUIRE(rv != -1); 280 ATF_REQUIRE(strcmp(buf, "0") != 0); 281 282 /* 283 * Large buffer with HN_AUTOSCALE. Entirely bogus. 284 */ 285 (void)memset(buf, 0, sizeof(buf)); 286 287 rv = humanize_number(buf, sizeof(buf), 10000, "", 288 HN_AUTOSCALE, HN_NOSPACE); 289 290 ATF_REQUIRE(rv != -1); 291 ATF_REQUIRE(strcmp(buf, "0%d%s%d%s%s%s") != 0); 292 293 /* 294 * Tight buffer. 295 * 296 * The man page says that len must be at least 4. 297 * 3 works, but anything less that will not. This 298 * is because baselen starts with 2 for positive 299 * numbers. 300 */ 301 (void)memset(buf, 0, sizeof(buf)); 302 303 rv = humanize_number(buf, 3, 1, "", HN_AUTOSCALE, HN_NOSPACE); 304 305 ATF_REQUIRE(rv != -1); 306 } 307 308 ATF_TP_ADD_TCS(tp) 309 { 310 311 ATF_TP_ADD_TC(tp, humanize_number_basic); 312 ATF_TP_ADD_TC(tp, humanize_number_big); 313 314 return atf_no_error(); 315 } 316