/* $OpenBSD: sort.c,v 1.49 2015/03/30 22:20:18 millert Exp $ */ /*- * Copyright (C) 2009 Gabor Kovesdan * Copyright (C) 2012 Oleg Moskalenko * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "coll.h" #include "file.h" #include "sort.h" #define OPTIONS "bCcdfgHhik:Mmno:RrS:st:T:uVz" static bool need_random; static const char *random_source; MD5_CTX md5_ctx; struct sort_opts sort_opts_vals; bool debug_sort; bool need_hint; static bool gnusort_numeric_compatibility; static struct sort_mods default_sort_mods_object; struct sort_mods * const default_sort_mods = &default_sort_mods_object; static bool print_symbols_on_debug; /* * Arguments from file (when file0-from option is used: */ static size_t argc_from_file0 = (size_t)-1; static char **argv_from_file0; /* * Placeholder symbols for options which have no single-character equivalent */ enum { SORT_OPT = CHAR_MAX + 1, HELP_OPT, FF_OPT, BS_OPT, VERSION_OPT, DEBUG_OPT, RANDOMSOURCE_OPT, COMPRESSPROGRAM_OPT, QSORT_OPT, HEAPSORT_OPT, RADIXSORT_OPT, MMAP_OPT }; #define NUMBER_OF_MUTUALLY_EXCLUSIVE_FLAGS 6 static const char mutually_exclusive_flags[NUMBER_OF_MUTUALLY_EXCLUSIVE_FLAGS] = { 'M', 'n', 'g', 'R', 'h', 'V' }; static const struct option long_options[] = { { "batch-size", required_argument, NULL, BS_OPT }, { "buffer-size", required_argument, NULL, 'S' }, { "check", optional_argument, NULL, 'c' }, { "check=silent|quiet", optional_argument, NULL, 'C' }, { "compress-program", required_argument, NULL, COMPRESSPROGRAM_OPT }, { "debug", no_argument, NULL, DEBUG_OPT }, { "dictionary-order", no_argument, NULL, 'd' }, { "field-separator", required_argument, NULL, 't' }, { "files0-from", required_argument, NULL, FF_OPT }, { "general-numeric-sort", no_argument, NULL, 'g' }, { "heapsort", no_argument, NULL, HEAPSORT_OPT }, { "help", no_argument, NULL, HELP_OPT }, { "human-numeric-sort", no_argument, NULL, 'h' }, { "ignore-leading-blanks", no_argument, NULL, 'b' }, { "ignore-case", no_argument, NULL, 'f' }, { "ignore-nonprinting", no_argument, NULL, 'i' }, { "key", required_argument, NULL, 'k' }, { "merge", no_argument, NULL, 'm' }, { "mergesort", no_argument, NULL, 'H' }, { "mmap", no_argument, NULL, MMAP_OPT }, { "month-sort", no_argument, NULL, 'M' }, { "numeric-sort", no_argument, NULL, 'n' }, { "output", required_argument, NULL, 'o' }, { "qsort", no_argument, NULL, QSORT_OPT }, { "radixsort", no_argument, NULL, RADIXSORT_OPT }, { "random-sort", no_argument, NULL, 'R' }, { "random-source", required_argument, NULL, RANDOMSOURCE_OPT }, { "reverse", no_argument, NULL, 'r' }, { "sort", required_argument, NULL, SORT_OPT }, { "stable", no_argument, NULL, 's' }, { "temporary-directory", required_argument, NULL, 'T' }, { "unique", no_argument, NULL, 'u' }, { "version", no_argument, NULL, VERSION_OPT }, { "version-sort", no_argument, NULL, 'V' }, { "zero-terminated", no_argument, NULL, 'z' }, { NULL, no_argument, NULL, 0 } }; /* * Check where sort modifier is present */ static bool sort_modifier_empty(struct sort_mods *sm) { if (sm == NULL) return true; return !(sm->Mflag || sm->Vflag || sm->nflag || sm->gflag || sm->rflag || sm->Rflag || sm->hflag || sm->dflag || sm->fflag); } /* * Print out usage text. */ static __dead void usage(int exit_val) { fprintf(exit_val ? stderr : stdout, "usage: %s [-bCcdfgHhiMmnRrsuVz] [-k field1[,field2]] [-o output] " "[-S size]\n\t[-T dir] [-t char] [file ...]\n", getprogname()); exit(exit_val); } /* * Read input file names from a file (file0-from option). */ static void read_fns_from_file0(const char *fn) { FILE *f; char *line = NULL; size_t linesize = 0; ssize_t linelen; if (fn == NULL) return; f = fopen(fn, "r"); if (f == NULL) err(2, "%s", fn); while ((linelen = getdelim(&line, &linesize, '\0', f)) != -1) { if (*line != '\0') { if (argc_from_file0 == (size_t)-1) argc_from_file0 = 0; ++argc_from_file0; argv_from_file0 = sort_reallocarray(argv_from_file0, argc_from_file0, sizeof(char *)); argv_from_file0[argc_from_file0 - 1] = line; } else { free(line); } line = NULL; linesize = 0; } if (ferror(f)) err(2, "%s: getdelim", fn); closefile(f, fn); } /* * Check how much RAM is available for the sort. */ static void set_hw_params(void) { long long user_memory; struct rlimit rl; size_t len; int mib[] = { CTL_HW, HW_USERMEM64 }; /* Get total user (non-kernel) memory. */ len = sizeof(user_memory); if (sysctl(mib, 2, &user_memory, &len, NULL, 0) == -1) user_memory = -1; /* Increase our data size to the max */ if (getrlimit(RLIMIT_DATA, &rl) == 0) { free_memory = (unsigned long long)rl.rlim_cur; rl.rlim_cur = rl.rlim_max; if (setrlimit(RLIMIT_DATA, &rl) == 0) { free_memory = (unsigned long long)rl.rlim_max; } else { warn("Can't set resource limit to max data size"); } } else warn("Can't get resource limit for data size"); /* We prefer to use temp files rather than swap space. */ if (user_memory != -1 && free_memory > user_memory) free_memory = user_memory; available_free_memory = free_memory / 2; } /* * Convert "plain" symbol to wide symbol, with default value. */ static void conv_mbtowc(wchar_t *wc, const char *c, const wchar_t def) { if (wc && c) { int res; res = mbtowc(wc, c, MB_CUR_MAX); if (res < 1) *wc = def; } } /* * Set current locale symbols. */ static void set_locale(void) { struct lconv *lc; const char *locale; setlocale(LC_ALL, ""); lc = localeconv(); if (lc) { /* obtain LC_NUMERIC info */ /* Convert to wide char form */ conv_mbtowc(&symbol_decimal_point, lc->decimal_point, symbol_decimal_point); conv_mbtowc(&symbol_thousands_sep, lc->thousands_sep, symbol_thousands_sep); conv_mbtowc(&symbol_positive_sign, lc->positive_sign, symbol_positive_sign); conv_mbtowc(&symbol_negative_sign, lc->negative_sign, symbol_negative_sign); } if (getenv("GNUSORT_NUMERIC_COMPATIBILITY")) gnusort_numeric_compatibility = true; locale = setlocale(LC_COLLATE, NULL); if (locale != NULL) { char *tmpl; const char *byteclocale; tmpl = sort_strdup(locale); byteclocale = setlocale(LC_COLLATE, "C"); if (byteclocale && strcmp(byteclocale, tmpl) == 0) { byte_sort = true; } else { byteclocale = setlocale(LC_COLLATE, "POSIX"); if (byteclocale && strcmp(byteclocale, tmpl) == 0) byte_sort = true; else setlocale(LC_COLLATE, tmpl); } sort_free(tmpl); } if (!byte_sort) sort_mb_cur_max = MB_CUR_MAX; } /* * Set directory temporary files. */ static void set_tmpdir(void) { char *td; td = getenv("TMPDIR"); if (td != NULL) tmpdir = sort_strdup(td); } /* * Parse -S option. */ static unsigned long long parse_memory_buffer_value(const char *value) { if (value == NULL) return available_free_memory; else { char *endptr; unsigned long long membuf; endptr = NULL; errno = 0; membuf = strtoll(value, &endptr, 10); if (errno != 0) { warn("Wrong memory buffer specification"); membuf = available_free_memory; } else { switch (*endptr){ case 'Y': membuf *= 1024; /* FALLTHROUGH */ case 'Z': membuf *= 1024; /* FALLTHROUGH */ case 'E': membuf *= 1024; /* FALLTHROUGH */ case 'P': membuf *= 1024; /* FALLTHROUGH */ case 'T': membuf *= 1024; /* FALLTHROUGH */ case 'G': membuf *= 1024; /* FALLTHROUGH */ case 'M': membuf *= 1024; /* FALLTHROUGH */ case '\0': case 'K': membuf *= 1024; /* FALLTHROUGH */ case 'b': break; case '%': membuf = (available_free_memory * membuf) / 100; break; default: warnc(EINVAL, "%s", optarg); membuf = available_free_memory; } } return membuf; } } /* * Signal handler that clears the temporary files. */ static void sig_handler(int sig __unused) { clear_tmp_files(); exit(2); } /* * Set signal handler on panic signals. */ static void set_signal_handler(void) { struct sigaction sa; int i, signals[] = {SIGTERM, SIGHUP, SIGINT, SIGQUIT, SIGUSR1, SIGUSR2, SIGPIPE, SIGXCPU, SIGXFSZ, SIGVTALRM, SIGPROF, 0}; memset(&sa, 0, sizeof(sa)); sigfillset(&sa.sa_mask); sa.sa_flags = SA_RESTART; sa.sa_handler = sig_handler; for (i = 0; signals[i] != 0; i++) { if (sigaction(signals[i], &sa, NULL) < 0) { warn("sigaction(%d)", i); continue; } } } /* * Print "unknown" message and exit with status 2. */ static void unknown(const char *what) { errx(2, "Unknown feature: %s", what); } /* * Check whether contradictory input options are used. */ static void check_mutually_exclusive_flags(char c, bool *mef_flags) { int i, fo_index, mec; bool found_others, found_this; found_others = found_this =false; fo_index = 0; for (i = 0; i < NUMBER_OF_MUTUALLY_EXCLUSIVE_FLAGS; i++) { mec = mutually_exclusive_flags[i]; if (mec != c) { if (mef_flags[i]) { if (found_this) errx(1, "%c:%c: mutually exclusive flags", c, mec); found_others = true; fo_index = i; } } else { if (found_others) errx(1, "%c:%c: mutually exclusive flags", c, mutually_exclusive_flags[fo_index]); mef_flags[i] = true; found_this = true; } } } /* * Initialise sort opts data. */ static void set_sort_opts(void) { memset(&default_sort_mods_object, 0, sizeof(default_sort_mods_object)); memset(&sort_opts_vals, 0, sizeof(sort_opts_vals)); default_sort_mods_object.func = get_sort_func(&default_sort_mods_object); } /* * Set a sort modifier on a sort modifiers object. */ static bool set_sort_modifier(struct sort_mods *sm, int c) { if (sm) { switch (c){ case 'b': sm->bflag = true; break; case 'd': sm->dflag = true; break; case 'f': sm->fflag = true; break; case 'g': sm->gflag = true; need_hint = true; break; case 'i': sm->iflag = true; break; case 'R': sm->Rflag = true; need_random = true; break; case 'M': initialise_months(); sm->Mflag = true; need_hint = true; break; case 'n': sm->nflag = true; need_hint = true; print_symbols_on_debug = true; break; case 'r': sm->rflag = true; break; case 'V': sm->Vflag = true; break; case 'h': sm->hflag = true; need_hint = true; print_symbols_on_debug = true; break; default: return false; } sort_opts_vals.complex_sort = true; sm->func = get_sort_func(sm); } return true; } /* * Parse POS in -k option. */ static int parse_pos(const char *s, struct key_specs *ks, bool *mef_flags, bool second) { regmatch_t pmatch[4]; regex_t re; char *c, *f; const char *sregexp = "^([0-9]+)(\\.[0-9]+)?([bdfirMngRhV]+)?$"; size_t len, nmatch; int ret; ret = -1; nmatch = 4; c = f = NULL; if (regcomp(&re, sregexp, REG_EXTENDED) != 0) return -1; if (regexec(&re, s, nmatch, pmatch, 0) != 0) goto end; if (pmatch[0].rm_eo <= pmatch[0].rm_so) goto end; if (pmatch[1].rm_eo <= pmatch[1].rm_so) goto end; len = pmatch[1].rm_eo - pmatch[1].rm_so; f = sort_malloc((len + 1) * sizeof(char)); strncpy(f, s + pmatch[1].rm_so, len); f[len] = '\0'; if (second) { errno = 0; ks->f2 = (size_t) strtoul(f, NULL, 10); if (errno != 0) err(2, "-k"); if (ks->f2 == 0) { warn("0 field in key specs"); goto end; } } else { errno = 0; ks->f1 = (size_t) strtoul(f, NULL, 10); if (errno != 0) err(2, "-k"); if (ks->f1 == 0) { warn("0 field in key specs"); goto end; } } if (pmatch[2].rm_eo > pmatch[2].rm_so) { len = pmatch[2].rm_eo - pmatch[2].rm_so - 1; c = sort_malloc((len + 1) * sizeof(char)); strncpy(c, s + pmatch[2].rm_so + 1, len); c[len] = '\0'; if (second) { errno = 0; ks->c2 = (size_t) strtoul(c, NULL, 10); if (errno != 0) err(2, "-k"); } else { errno = 0; ks->c1 = (size_t) strtoul(c, NULL, 10); if (errno != 0) err(2, "-k"); if (ks->c1 == 0) { warn("0 column in key specs"); goto end; } } } else { if (second) ks->c2 = 0; else ks->c1 = 1; } if (pmatch[3].rm_eo > pmatch[3].rm_so) { regoff_t i = 0; for (i = pmatch[3].rm_so; i < pmatch[3].rm_eo; i++) { check_mutually_exclusive_flags(s[i], mef_flags); if (s[i] == 'b') { if (second) ks->pos2b = true; else ks->pos1b = true; } else if (!set_sort_modifier(&(ks->sm), s[i])) goto end; } } ret = 0; end: if (c) sort_free(c); if (f) sort_free(f); regfree(&re); return ret; } /* * Parse -k option value. */ static int parse_k(const char *s, struct key_specs *ks) { int ret = -1; bool mef_flags[NUMBER_OF_MUTUALLY_EXCLUSIVE_FLAGS] = { false, false, false, false, false, false }; if (s && *s) { char *sptr; sptr = strchr(s, ','); if (sptr) { size_t size1; char *pos1, *pos2; size1 = sptr - s; if (size1 < 1) return -1; pos1 = sort_malloc((size1 + 1) * sizeof(char)); strncpy(pos1, s, size1); pos1[size1] = '\0'; ret = parse_pos(pos1, ks, mef_flags, false); sort_free(pos1); if (ret < 0) return ret; pos2 = sort_strdup(sptr + 1); ret = parse_pos(pos2, ks, mef_flags, true); sort_free(pos2); } else ret = parse_pos(s, ks, mef_flags, false); } return ret; } /* * Parse POS in +POS -POS option. */ static int parse_pos_obs(const char *s, int *nf, int *nc, char *sopts) { regex_t re; regmatch_t pmatch[4]; char *c, *f; const char *sregexp = "^([0-9]+)(\\.[0-9]+)?([A-Za-z]+)?$"; int ret; size_t len, nmatch; ret = -1; nmatch = 4; c = f = NULL; *nc = *nf = 0; if (regcomp(&re, sregexp, REG_EXTENDED) != 0) return -1; if (regexec(&re, s, nmatch, pmatch, 0) != 0) goto end; if (pmatch[0].rm_eo <= pmatch[0].rm_so) goto end; if (pmatch[1].rm_eo <= pmatch[1].rm_so) goto end; len = pmatch[1].rm_eo - pmatch[1].rm_so; f = sort_malloc((len + 1) * sizeof(char)); strncpy(f, s + pmatch[1].rm_so, len); f[len] = '\0'; errno = 0; *nf = (size_t) strtoul(f, NULL, 10); if (errno != 0) errx(2, "Invalid key position"); if (pmatch[2].rm_eo > pmatch[2].rm_so) { len = pmatch[2].rm_eo - pmatch[2].rm_so - 1; c = sort_malloc((len + 1) * sizeof(char)); strncpy(c, s + pmatch[2].rm_so + 1, len); c[len] = '\0'; errno = 0; *nc = (size_t) strtoul(c, NULL, 10); if (errno != 0) errx(2, "Invalid key position"); } if (pmatch[3].rm_eo > pmatch[3].rm_so) { len = pmatch[3].rm_eo - pmatch[3].rm_so; strncpy(sopts, s + pmatch[3].rm_so, len); sopts[len] = '\0'; } ret = 0; end: if (c) sort_free(c); if (f) sort_free(f); regfree(&re); return ret; } /* * "Translate" obsolete +POS1 -POS2 syntax into new -kPOS1,POS2 syntax */ static void fix_obsolete_keys(int *argc, char **argv) { char sopt[129]; int i; for (i = 1; i < *argc; i++) { char *arg1; arg1 = argv[i]; if (strlen(arg1) > 1 && arg1[0] == '+') { int c1, f1; char sopts1[128]; sopts1[0] = 0; c1 = f1 = 0; if (parse_pos_obs(arg1 + 1, &f1, &c1, sopts1) < 0) continue; else { f1 += 1; c1 += 1; if (i + 1 < *argc) { char *arg2 = argv[i + 1]; if (strlen(arg2) > 1 && arg2[0] == '-') { int c2, f2; char sopts2[128]; sopts2[0] = 0; c2 = f2 = 0; if (parse_pos_obs(arg2 + 1, &f2, &c2, sopts2) >= 0) { int j; if (c2 > 0) f2 += 1; snprintf(sopt, sizeof(sopt), "-k%d.%d%s,%d.%d%s", f1, c1, sopts1, f2, c2, sopts2); argv[i] = sort_strdup(sopt); for (j = i + 1; j + 1 < *argc; j++) argv[j] = argv[j + 1]; *argc -= 1; continue; } } } snprintf(sopt, sizeof(sopt), "-k%d.%d%s", f1, c1, sopts1); argv[i] = sort_strdup(sopt); } } } } /* * Set random seed */ static void set_random_seed(void) { if (!need_random) return; MD5Init(&md5_ctx); if (random_source != NULL) { unsigned char buf[BUFSIZ]; size_t nr; FILE *fp; if ((fp = fopen(random_source, "r")) == NULL) err(2, "%s", random_source); while ((nr = fread(buf, 1, sizeof(buf), fp)) != 0) MD5Update(&md5_ctx, buf, nr); if (ferror(fp)) err(2, "%s", random_source); fclose(fp); } else { unsigned char rsd[1024]; arc4random_buf(rsd, sizeof(rsd)); MD5Update(&md5_ctx, rsd, sizeof(rsd)); } } /* * Main function. */ int main(int argc, char *argv[]) { char *outfile, *real_outfile; int c, result; size_t i; bool mef_flags[NUMBER_OF_MUTUALLY_EXCLUSIVE_FLAGS] = { false, false, false, false, false, false }; result = 0; outfile = sort_strdup("-"); real_outfile = NULL; struct sort_mods *sm = &default_sort_mods_object; init_tmp_files(); set_signal_handler(); set_hw_params(); set_locale(); set_tmpdir(); set_sort_opts(); fix_obsolete_keys(&argc, argv); while (((c = getopt_long(argc, argv, OPTIONS, long_options, NULL)) != -1)) { check_mutually_exclusive_flags(c, mef_flags); if (!set_sort_modifier(sm, c)) { switch (c) { case 'c': sort_opts_vals.cflag = true; if (optarg) { if (!strcmp(optarg, "diagnose-first")) ; else if (!strcmp(optarg, "silent") || !strcmp(optarg, "quiet")) sort_opts_vals.csilentflag = true; else if (*optarg) unknown(optarg); } break; case 'C': sort_opts_vals.cflag = true; sort_opts_vals.csilentflag = true; break; case 'k': { sort_opts_vals.complex_sort = true; sort_opts_vals.kflag = true; keys_num++; keys = sort_reallocarray(keys, keys_num, sizeof(struct key_specs)); memset(&(keys[keys_num - 1]), 0, sizeof(struct key_specs)); if (parse_k(optarg, &(keys[keys_num - 1])) < 0) { errc(2, EINVAL, "-k %s", optarg); } break; } case 'm': sort_opts_vals.mflag = true; break; case 'o': sort_free(outfile); outfile = sort_strdup(optarg); break; case 's': sort_opts_vals.sflag = true; break; case 'S': available_free_memory = parse_memory_buffer_value(optarg); break; case 'T': tmpdir = sort_strdup(optarg); break; case 't': while (strlen(optarg) > 1) { if (optarg[0] != '\\') { errc(2, EINVAL, "%s", optarg); } optarg += 1; if (*optarg == '0') { *optarg = 0; break; } } sort_opts_vals.tflag = true; sort_opts_vals.field_sep = btowc(optarg[0]); if (sort_opts_vals.field_sep == WEOF) { errno = EINVAL; err(2, NULL); } if (!gnusort_numeric_compatibility) { if (symbol_decimal_point == sort_opts_vals.field_sep) symbol_decimal_point = WEOF; if (symbol_thousands_sep == sort_opts_vals.field_sep) symbol_thousands_sep = WEOF; if (symbol_negative_sign == sort_opts_vals.field_sep) symbol_negative_sign = WEOF; if (symbol_positive_sign == sort_opts_vals.field_sep) symbol_positive_sign = WEOF; } break; case 'u': sort_opts_vals.uflag = true; /* stable sort for the correct unique val */ sort_opts_vals.sflag = true; break; case 'z': sort_opts_vals.zflag = true; break; case SORT_OPT: if (optarg) { if (!strcmp(optarg, "general-numeric")) set_sort_modifier(sm, 'g'); else if (!strcmp(optarg, "human-numeric")) set_sort_modifier(sm, 'h'); else if (!strcmp(optarg, "numeric")) set_sort_modifier(sm, 'n'); else if (!strcmp(optarg, "month")) set_sort_modifier(sm, 'M'); else if (!strcmp(optarg, "random")) set_sort_modifier(sm, 'R'); else unknown(optarg); } break; case QSORT_OPT: sort_opts_vals.sort_method = SORT_QSORT; break; case 'H': sort_opts_vals.sort_method = SORT_MERGESORT; break; case MMAP_OPT: use_mmap = true; break; case HEAPSORT_OPT: sort_opts_vals.sort_method = SORT_HEAPSORT; break; case RADIXSORT_OPT: sort_opts_vals.sort_method = SORT_RADIXSORT; break; case RANDOMSOURCE_OPT: random_source = strdup(optarg); break; case COMPRESSPROGRAM_OPT: compress_program = strdup(optarg); break; case FF_OPT: read_fns_from_file0(optarg); break; case BS_OPT: { errno = 0; long mof = strtol(optarg, NULL, 10); if (errno != 0) err(2, "--batch-size"); if (mof >= 2) max_open_files = (size_t) mof + 1; } break; case VERSION_OPT: printf("%s\n", VERSION); exit(EXIT_SUCCESS); /* NOTREACHED */ break; case DEBUG_OPT: debug_sort = true; break; case HELP_OPT: usage(0); /* NOTREACHED */ break; default: usage(2); /* NOTREACHED */ } } } argc -= optind; argv += optind; if (sort_opts_vals.cflag && sort_opts_vals.mflag) errx(1, "%c:%c: mutually exclusive flags", 'm', 'c'); if (keys_num == 0) { keys_num = 1; keys = sort_realloc(keys, sizeof(struct key_specs)); memset(&(keys[0]), 0, sizeof(struct key_specs)); keys[0].c1 = 1; keys[0].pos1b = default_sort_mods->bflag; keys[0].pos2b = default_sort_mods->bflag; memcpy(&(keys[0].sm), default_sort_mods, sizeof(struct sort_mods)); } for (i = 0; i < keys_num; i++) { struct key_specs *ks; ks = &(keys[i]); if (sort_modifier_empty(&(ks->sm)) && !(ks->pos1b) && !(ks->pos2b)) { ks->pos1b = sm->bflag; ks->pos2b = sm->bflag; memcpy(&(ks->sm), sm, sizeof(struct sort_mods)); } ks->sm.func = get_sort_func(&(ks->sm)); } if (argv_from_file0) { argc = argc_from_file0; argv = argv_from_file0; } if (debug_sort) { printf("Memory to be used for sorting: %llu\n", available_free_memory); printf("Using collate rules of %s locale\n", setlocale(LC_COLLATE, NULL)); if (byte_sort) printf("Byte sort is used\n"); if (print_symbols_on_debug) { printf("Decimal Point: <%lc>\n", symbol_decimal_point); if (symbol_thousands_sep) printf("Thousands separator: <%lc>\n", symbol_thousands_sep); printf("Positive sign: <%lc>\n", symbol_positive_sign); printf("Negative sign: <%lc>\n", symbol_negative_sign); } } set_random_seed(); /* Case when the outfile equals one of the input files: */ if (strcmp(outfile, "-")) { int i; for (i = 0; i < argc; ++i) { if (strcmp(argv[i], outfile) == 0) { real_outfile = sort_strdup(outfile); for (;;) { const size_t size = strlen(outfile) + strlen(".tmp") + 1; outfile = sort_realloc(outfile, size); strlcat(outfile, ".tmp", size); if (access(outfile, F_OK) < 0) break; } tmp_file_atexit(outfile); } } } if (!sort_opts_vals.cflag && !sort_opts_vals.mflag) { struct file_list fl; struct sort_list list; sort_list_init(&list); file_list_init(&fl, true); if (argc < 1) procfile("-", &list, &fl); else { while (argc > 0) { procfile(*argv, &list, &fl); --argc; ++argv; } } if (fl.count < 1) sort_list_to_file(&list, outfile); else { if (list.count > 0) { char *flast = new_tmp_file_name(); sort_list_to_file(&list, flast); file_list_add(&fl, flast, false); } merge_files(&fl, outfile); } file_list_clean(&fl); /* * We are about to exit the program, so we can ignore * the clean-up for speed * * sort_list_clean(&list); */ } else if (sort_opts_vals.cflag) { result = (argc == 0) ? (check("-")) : (check(*argv)); } else if (sort_opts_vals.mflag) { struct file_list fl; file_list_init(&fl, false); file_list_populate(&fl, argc, argv, true); merge_files(&fl, outfile); file_list_clean(&fl); } if (real_outfile) { unlink(real_outfile); if (rename(outfile, real_outfile) < 0) err(2, "%s", real_outfile); sort_free(real_outfile); } sort_free(outfile); return result; }