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Diffstat (limited to 'ubi-utils/src/common.c')
| -rw-r--r-- | ubi-utils/src/common.c | 209 |
1 files changed, 0 insertions, 209 deletions
diff --git a/ubi-utils/src/common.c b/ubi-utils/src/common.c deleted file mode 100644 index da5156d..0000000 --- a/ubi-utils/src/common.c +++ /dev/null @@ -1,209 +0,0 @@ -/* - * Copyright (C) 2007, 2008 Nokia Corporation - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See - * the GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -/* - * This file contains various common stuff used by UBI utilities. - * - * Authors: Artem Bityutskiy - * Adrian Hunter - */ - -#include <sys/time.h> -#include <sys/types.h> -#include <stdio.h> -#include <string.h> -#include <ctype.h> -#include <stdlib.h> -#include <unistd.h> -#include "common.h" - -/** - * get_multiplier - convert size specifier to an integer multiplier. - * @str: the size specifier string - * - * This function parses the @str size specifier, which may be one of - * 'KiB', 'MiB', or 'GiB' into an integer multiplier. Returns positive - * size multiplier in case of success and %-1 in case of failure. - */ -static int get_multiplier(const char *str) -{ - if (!str) - return 1; - - /* Remove spaces before the specifier */ - while (*str == ' ' || *str == '\t') - str += 1; - - if (!strcmp(str, "KiB")) - return 1024; - if (!strcmp(str, "MiB")) - return 1024 * 1024; - if (!strcmp(str, "GiB")) - return 1024 * 1024 * 1024; - - return -1; -} - -/** - * ubiutils_get_bytes - convert a string containing amount of bytes into an - * integer - * @str: string to convert - * - * This function parses @str which may have one of 'KiB', 'MiB', or 'GiB' - * size specifiers. Returns positive amount of bytes in case of success and %-1 - * in case of failure. - */ -long long ubiutils_get_bytes(const char *str) -{ - char *endp; - long long bytes = strtoull(str, &endp, 0); - - if (endp == str || bytes < 0) { - fprintf(stderr, "incorrect amount of bytes: \"%s\"\n", str); - return -1; - } - - if (*endp != '\0') { - int mult = get_multiplier(endp); - - if (mult == -1) { - fprintf(stderr, "bad size specifier: \"%s\" - " - "should be 'KiB', 'MiB' or 'GiB'\n", endp); - return -1; - } - bytes *= mult; - } - - return bytes; -} - -/** - * ubiutils_print_bytes - print bytes. - * @bytes: variable to print - * @bracket: whether brackets have to be put or not - * - * This is a helper function which prints amount of bytes in a human-readable - * form, i.e., it prints the exact amount of bytes following by the approximate - * amount of Kilobytes, Megabytes, or Gigabytes, depending on how big @bytes - * is. - */ -void ubiutils_print_bytes(long long bytes, int bracket) -{ - const char *p; - - if (bracket) - p = " ("; - else - p = ", "; - - printf("%lld bytes", bytes); - - if (bytes > 1024 * 1024 * 1024) - printf("%s%.1f GiB", p, (double)bytes / (1024 * 1024 * 1024)); - else if (bytes > 1024 * 1024) - printf("%s%.1f MiB", p, (double)bytes / (1024 * 1024)); - else if (bytes > 1024 && bytes != 0) - printf("%s%.1f KiB", p, (double)bytes / 1024); - else - return; - - if (bracket) - printf(")"); -} - -/** - * ubiutils_print_text - print text and fold it. - * @stream: file stream to print to - * @text: text to print - * @width: maximum allowed text width - * - * Print text and fold it so that each line would not have more then @width - * characters. - */ -void ubiutils_print_text(FILE *stream, const char *text, int width) -{ - int pos, bpos = 0; - const char *p; - char line[1024]; - - if (width > 1023) { - fprintf(stream, "%s\n", text); - return; - } - p = text; - pos = 0; - while (p[pos]) { - while (!isspace(p[pos])) { - line[pos] = p[pos]; - if (!p[pos]) - break; - ++pos; - if (pos == width) { - line[pos] = '\0'; - fprintf(stream, "%s\n", line); - p += pos; - pos = 0; - } - } - while (pos < width) { - line[pos] = p[pos]; - if (!p[pos]) { - bpos = pos; - break; - } - if (isspace(p[pos])) - bpos = pos; - ++pos; - } - line[bpos] = '\0'; - fprintf(stream, "%s\n", line); - p += bpos; - pos = 0; - while (p[pos] && isspace(p[pos])) - ++p; - } -} - -/** - * ubiutils_srand - randomly seed the standard pseudo-random generator. - * - * This helper function seeds the standard libc pseudo-random generator with a - * more or less random value to make sure the 'rand()' call does not return the - * same sequence every time UBI utilities run. Returns zero in case of success - * and a %-1 in case of error. - */ -int ubiutils_srand(void) -{ - struct timeval tv; - struct timezone tz; - unsigned int seed; - - /* - * Just assume that a combination of the PID + current time is a - * reasonably random number. - */ - if (gettimeofday(&tv, &tz)) - return -1; - - seed = (unsigned int)tv.tv_sec; - seed += (unsigned int)tv.tv_usec; - seed *= getpid(); - seed %= RAND_MAX; - srand(seed); - return 0; -} |