From 1880a3927b23f265f63b2adb86fbdb81ea09eb06 Mon Sep 17 00:00:00 2001 From: Lasse Collin Date: Wed, 19 Nov 2008 23:52:24 +0200 Subject: Renamed lzma to xz and lzmadec to xzdec. We create symlinks lzma, unlzma, and lzcat in "make install" for backwards compatibility with LZMA Utils 4.32.x; I'm not sure if this should be the default though. --- src/xz/util.c | 199 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 199 insertions(+) create mode 100644 src/xz/util.c (limited to 'src/xz/util.c') diff --git a/src/xz/util.c b/src/xz/util.c new file mode 100644 index 00000000..13b67925 --- /dev/null +++ b/src/xz/util.c @@ -0,0 +1,199 @@ +/////////////////////////////////////////////////////////////////////////////// +// +/// \file util.c +/// \brief Miscellaneous utility functions +// +// Copyright (C) 2007 Lasse Collin +// +// This program is free software; you can redistribute it and/or +// modify it under the terms of the GNU Lesser General Public +// License as published by the Free Software Foundation; either +// version 2.1 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 +// Lesser General Public License for more details. +// +/////////////////////////////////////////////////////////////////////////////// + +#include "private.h" + + +extern void * +xrealloc(void *ptr, size_t size) +{ + assert(size > 0); + + ptr = realloc(ptr, size); + if (ptr == NULL) + message_fatal("%s", strerror(errno)); + + return ptr; +} + + +extern char * +xstrdup(const char *src) +{ + assert(src != NULL); + const size_t size = strlen(src) + 1; + char *dest = xmalloc(size); + return memcpy(dest, src, size); +} + + +extern uint64_t +str_to_uint64(const char *name, const char *value, uint64_t min, uint64_t max) +{ + uint64_t result = 0; + + // Skip blanks. + while (*value == ' ' || *value == '\t') + ++value; + + if (*value < '0' || *value > '9') + message_fatal(_("%s: Value is not a non-negative " + "decimal integer"), value); + + do { + // Don't overflow. + if (result > (UINT64_MAX - 9) / 10) + goto error; + + result *= 10; + result += *value - '0'; + ++value; + } while (*value >= '0' && *value <= '9'); + + if (*value != '\0') { + // Look for suffix. + static const struct { + const char name[4]; + uint64_t multiplier; + } suffixes[] = { + { "k", UINT64_C(1000) }, + { "kB", UINT64_C(1000) }, + { "M", UINT64_C(1000000) }, + { "MB", UINT64_C(1000000) }, + { "G", UINT64_C(1000000000) }, + { "GB", UINT64_C(1000000000) }, + { "Ki", UINT64_C(1024) }, + { "KiB", UINT64_C(1024) }, + { "Mi", UINT64_C(1048576) }, + { "MiB", UINT64_C(1048576) }, + { "Gi", UINT64_C(1073741824) }, + { "GiB", UINT64_C(1073741824) } + }; + + uint64_t multiplier = 0; + for (size_t i = 0; i < ARRAY_SIZE(suffixes); ++i) { + if (strcmp(value, suffixes[i].name) == 0) { + multiplier = suffixes[i].multiplier; + break; + } + } + + if (multiplier == 0) { + message(V_ERROR, _("%s: Invalid multiplier suffix. " + "Valid suffixes:"), value); + message_fatal("`k' (10^3), `M' (10^6), `G' (10^9) " + "`Ki' (2^10), `Mi' (2^20), " + "`Gi' (2^30)"); + } + + // Don't overflow here either. + if (result > UINT64_MAX / multiplier) + goto error; + + result *= multiplier; + } + + if (result < min || result > max) + goto error; + + return result; + +error: + message_fatal(_("Value of the option `%s' must be in the range " + "[%llu, %llu]"), name, + (unsigned long long)(min), + (unsigned long long)(max)); +} + + +/* +/// \brief Simple quoting to get rid of ASCII control characters +/// +/// This is not so cool and locale-dependent, but should be good enough +/// At least we don't print any control characters on the terminal. +/// +extern char * +str_quote(const char *str) +{ + size_t dest_len = 0; + bool has_ctrl = false; + + while (str[dest_len] != '\0') + if (*(unsigned char *)(str + dest_len++) < 0x20) + has_ctrl = true; + + char *dest = malloc(dest_len + 1); + if (dest != NULL) { + if (has_ctrl) { + for (size_t i = 0; i < dest_len; ++i) + if (*(unsigned char *)(str + i) < 0x20) + dest[i] = '?'; + else + dest[i] = str[i]; + + dest[dest_len] = '\0'; + + } else { + // Usually there are no control characters, + // so we can optimize. + memcpy(dest, str, dest_len + 1); + } + } + + return dest; +} +*/ + + +extern bool +is_empty_filename(const char *filename) +{ + if (filename[0] == '\0') { + message_error(_("Empty filename, skipping")); + return true; + } + + return false; +} + + +extern bool +is_tty_stdin(void) +{ + const bool ret = isatty(STDIN_FILENO); + + if (ret) + message_error(_("Compressed data not read from a terminal " + "unless `--force' is used.")); + + return ret; +} + + +extern bool +is_tty_stdout(void) +{ + const bool ret = isatty(STDOUT_FILENO); + + if (ret) + message_error(_("Compressed data not written to a terminal " + "unless `--force' is used.")); + + return ret; +} -- cgit v1.2.3