/* Miscellaneous declarations. Copyright (C) 1995, 1996, 1997, 1998, 2003 Free Software Foundation, Inc. This file is part of GNU Wget. GNU Wget 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. GNU Wget 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 Wget; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. In addition, as a special exception, the Free Software Foundation gives permission to link the code of its release of Wget with the OpenSSL project's "OpenSSL" library (or with modified versions of it that use the same license as the "OpenSSL" library), and distribute the linked executables. You must obey the GNU General Public License in all respects for all of the code used other than "OpenSSL". If you modify this file, you may extend this exception to your version of the file, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version. */ /* This file contains declarations that are universally useful and those that don't fit elsewhere. It also includes sysdep.h which includes some often-needed system includes, like the obnoxious inclusion. */ #ifndef WGET_H #define WGET_H /* Disable assertions when debug support is not compiled in. */ #ifndef ENABLE_DEBUG # define NDEBUG #endif /* `gettext (FOO)' is long to write, so we use `_(FOO)'. If NLS is unavailable, _(STRING) simply returns STRING. */ #ifdef HAVE_NLS # define _(string) gettext (string) # ifdef HAVE_LIBINTL_H # include # else /* not HAVE_LIBINTL_H */ const char *gettext (); # endif /* not HAVE_LIBINTL_H */ #else /* not HAVE_NLS */ # define _(string) (string) #endif /* not HAVE_NLS */ /* A pseudo function call that serves as a marker for the automated extraction of messages, but does not call gettext(). The run-time translation is done at a different place in the code. The purpose of the N_("...") call is to make the message snarfer aware that the "..." string needs to be translated. STRING should be a string literal. Concatenated strings and other string expressions won't work. The macro's expansion is not parenthesized, so that it is suitable as initializer for static 'char[]' or 'const char[]' variables. -- explanation partly taken from GNU make. */ #define N_(string) string /* I18N NOTE: You will notice that none of the DEBUGP messages are marked as translatable. This is intentional, for a few reasons: 1) The debug messages are not meant for the users to look at, but for the developers; as such, they should be considered more like source comments than real program output. 2) The messages are numerous, and yet they are random and frivolous ("double yuck!" and such). There would be a lot of work with no gain. 3) Finally, the debug messages are meant to be a clue for me to debug problems with Wget. If I get them in a language I don't understand, debugging will become a new challenge of its own! */ /* Include these, so random files need not include them. */ #include "sysdep.h" /* locale independent replacement for ctype.h */ #include "safe-ctype.h" /* Conditionalize the use of GCC's __attribute__((format)) and __builtin_expect features using macros. */ #if defined(__GNUC__) && __GNUC__ >= 3 # define GCC_FORMAT_ATTR(a, b) __attribute__ ((format (printf, a, b))) # define LIKELY(exp) __builtin_expect (!!(exp), 1) # define UNLIKELY(exp) __builtin_expect ((exp), 0) #else # define GCC_FORMAT_ATTR(a, b) # define LIKELY(exp) (exp) # define UNLIKELY(exp) (exp) #endif /* Execute the following statement if debugging is both enabled at compile-time and requested at run-time; a no-op otherwise. */ #ifdef ENABLE_DEBUG # define IF_DEBUG if (UNLIKELY (opt.debug)) #else # define IF_DEBUG if (0) #endif #define DEBUGP(x) do { IF_DEBUG { debug_logprintf x; } } while (0) /* Define an integer type that works for file sizes, content lengths, and such. Normally we could just use off_t, but off_t is always 32-bit on Windows. */ #ifndef WINDOWS typedef off_t wgint; # define SIZEOF_WGINT SIZEOF_OFF_T #endif /* Define a strtol/strtoll clone that works with wgint. */ #ifndef str_to_wgint /* mswindows.h defines its own alias */ # if SIZEOF_WGINT == SIZEOF_LONG # define str_to_wgint strtol # define WGINT_MAX LONG_MAX # else # define str_to_wgint strtoll # define WGINT_MAX LLONG_MAX # endif #endif /* Now define a large integral type useful for storing sizes of *sums* of downloads, such as the value of the --quota option. This should be a type able to hold 2G+ values even on systems without large file support. (It is useful to limit Wget's download quota to say 10G even if a single file cannot be that large.) To make sure we get the largest size possible, we use `double' on systems without a 64-bit integral type. (Since it is used in very few places in Wget, this is acceptable.) */ #if SIZEOF_WGINT >= 8 /* just use wgint, which we already know how to print */ typedef wgint SUM_SIZE_INT; # define with_thousand_seps_sum with_thousand_seps #else /* On systems without LFS, use double, which buys us integers up to 2^53. */ typedef double SUM_SIZE_INT; #endif #include "options.h" /* Everything uses this, so include them here directly. */ #include "xmalloc.h" /* Likewise for logging functions. */ #include "log.h" /* Useful macros used across the code: */ /* The number of elements in an array. For example: static char a[] = "foo"; -- countof(a) == 4 (note terminating \0) int a[5] = {1, 2}; -- countof(a) == 5 char *a[] = { -- countof(a) == 3 "foo", "bar", "baz" }; */ #define countof(array) (sizeof (array) / sizeof ((array)[0])) /* Zero out a value. */ #define xzero(x) memset (&(x), '\0', sizeof (x)) /* Convert an ASCII hex digit to the corresponding number between 0 and 15. H should be a hexadecimal digit that satisfies isxdigit; otherwise, the result is undefined. */ #define XDIGIT_TO_NUM(h) ((h) < 'A' ? (h) - '0' : TOUPPER (h) - 'A' + 10) #define X2DIGITS_TO_NUM(h1, h2) ((XDIGIT_TO_NUM (h1) << 4) + XDIGIT_TO_NUM (h2)) /* The reverse of the above: convert a number in the [0, 16) range to the ASCII representation of the corresponding hexadecimal digit. `+ 0' is there so you can't accidentally use it as an lvalue. */ #define XNUM_TO_DIGIT(x) ("0123456789ABCDEF"[x] + 0) #define XNUM_TO_digit(x) ("0123456789abcdef"[x] + 0) /* Copy the data delimited with BEG and END to alloca-allocated storage, and zero-terminate it. Arguments are evaluated only once, in the order BEG, END, PLACE. */ #define BOUNDED_TO_ALLOCA(beg, end, place) do { \ const char *BTA_beg = (beg); \ int BTA_len = (end) - BTA_beg; \ char **BTA_dest = &(place); \ *BTA_dest = alloca (BTA_len + 1); \ memcpy (*BTA_dest, BTA_beg, BTA_len); \ (*BTA_dest)[BTA_len] = '\0'; \ } while (0) /* Return non-zero if string bounded between BEG and END is equal to STRING_LITERAL. The comparison is case-sensitive. */ #define BOUNDED_EQUAL(beg, end, string_literal) \ ((end) - (beg) == sizeof (string_literal) - 1 \ && !memcmp (beg, string_literal, sizeof (string_literal) - 1)) /* The same as above, except the comparison is case-insensitive. */ #define BOUNDED_EQUAL_NO_CASE(beg, end, string_literal) \ ((end) - (beg) == sizeof (string_literal) - 1 \ && !strncasecmp (beg, string_literal, sizeof (string_literal) - 1)) /* Like ptr=strdup(str), but allocates the space for PTR on the stack. This cannot be an expression because this is not portable: #define STRDUP_ALLOCA(str) (strcpy (alloca (strlen (str) + 1), str)) The problem is that some compilers can't handle alloca() being an argument to a function. */ #define STRDUP_ALLOCA(ptr, str) do { \ char **SA_dest = &(ptr); \ const char *SA_src = (str); \ *SA_dest = (char *)alloca (strlen (SA_src) + 1); \ strcpy (*SA_dest, SA_src); \ } while (0) /* Generally useful if you want to avoid arbitrary size limits but don't need a full dynamic array. Assumes that BASEVAR points to a malloced array of TYPE objects (or possibly a NULL pointer, if SIZEVAR is 0), with the total size stored in SIZEVAR. This macro will realloc BASEVAR as necessary so that it can hold at least NEEDED_SIZE objects. The reallocing is done by doubling, which ensures constant amortized time per element. */ #define DO_REALLOC(basevar, sizevar, needed_size, type) do { \ long DR_needed_size = (needed_size); \ long DR_newsize = 0; \ while ((sizevar) < (DR_needed_size)) { \ DR_newsize = sizevar << 1; \ if (DR_newsize < 16) \ DR_newsize = 16; \ (sizevar) = DR_newsize; \ } \ if (DR_newsize) \ basevar = xrealloc (basevar, DR_newsize * sizeof (type)); \ } while (0) /* Used to print pointers (usually for debugging). Print pointers using printf ("%0*lx", PTR_FORMAT (p)). (%p is too unpredictable; some implementations prepend 0x, while some don't, and most don't 0-pad the address.) */ #define PTR_FORMAT(p) 2 * sizeof (void *), (unsigned long) (p) extern const char *exec_name; /* Document type ("dt") flags */ enum { TEXTHTML = 0x0001, /* document is of type text/html or application/xhtml+xml */ RETROKF = 0x0002, /* retrieval was OK */ HEAD_ONLY = 0x0004, /* only send the HEAD request */ SEND_NOCACHE = 0x0008, /* send Pragma: no-cache directive */ ACCEPTRANGES = 0x0010, /* Accept-ranges header was found */ ADDED_HTML_EXTENSION = 0x0020 /* added ".html" extension due to -E */ }; /* Universal error type -- used almost everywhere. Error reporting of this detail is not generally used or needed and should be simplified. */ typedef enum { NOCONERROR, HOSTERR, CONSOCKERR, CONERROR, CONSSLERR, CONIMPOSSIBLE, NEWLOCATION, NOTENOUGHMEM, CONPORTERR, CONCLOSED, FTPOK, FTPLOGINC, FTPLOGREFUSED, FTPPORTERR, FTPSYSERR, FTPNSFOD, FTPRETROK, FTPUNKNOWNTYPE, FTPRERR, FTPREXC, FTPSRVERR, FTPRETRINT, FTPRESTFAIL, URLERROR, FOPENERR, FOPEN_EXCL_ERR, FWRITEERR, HOK, HLEXC, HEOF, HERR, RETROK, RECLEVELEXC, FTPACCDENIED, WRONGCODE, FTPINVPASV, FTPNOPASV, CONTNOTSUPPORTED, RETRUNNEEDED, RETRFINISHED, READERR, TRYLIMEXC, URLBADPATTERN, FILEBADFILE, RANGEERR, RETRBADPATTERN, RETNOTSUP, ROBOTSOK, NOROBOTS, PROXERR, AUTHFAILED, QUOTEXC, WRITEFAILED, SSLINITFAILED } uerr_t; #endif /* WGET_H */