mirror of https://github.com/moparisthebest/wget
[svn] Removed (not used anymore) string_t.{c,h}.
This commit is contained in:
mtortonesi
parent
4b57f166ae
commit
6dc9563cca
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@ -1,3 +1,9 @@
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2005-04-04 Mauro Tortonesi <mauro@ferrara.linux.it>
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* string.c: Removed.
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* string.h: Removed.
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2005-04-02 Hrvoje Niksic <hniksic@xemacs.org>
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* url.c (rewrite_shorthand_url): Only accept recognized schemes.
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424
src/string_t.c
424
src/string_t.c
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@ -1,424 +0,0 @@
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/*
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* string_t.c - dynamic string handling module
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*
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* Copyright (C) 2005 Free Software Foundation, Inc.
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*
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* This file is part of GNU Wget.
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*
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* GNU Wget is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* GNU Wget is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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* In addition, as a special exception, the Free Software Foundation
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* gives permission to link the code of its release of Wget with the
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* OpenSSL project's "OpenSSL" library (or with modified versions of it
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* that use the same license as the "OpenSSL" library), and distribute
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* the linked executables. You must obey the GNU General Public License
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* in all respects for all of the code used other than "OpenSSL". If you
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* modify this file, you may extend this exception to your version of the
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* file, but you are not obligated to do so. If you do not wish to do
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* so, delete this exception statement from your version.
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*/
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#include "config.h"
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#define _GNU_SOURCE /* to get iswblank */
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wchar.h>
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#include <wctype.h>
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#include "wget.h"
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#ifdef STANDALONE
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#undef xmalloc
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#undef xrealloc
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#undef xfree_null
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#define xmalloc malloc
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#define xrealloc realloc
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#define xfree_null(p) if (!(p)) ; else free (p)
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#else
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#include "xmalloc.h"
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#endif
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#ifdef WINDOWS
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static const wchar_t w_line_delim[] = L"\r\n";
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static const char line_delim[] = "\r\n";
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static const unsigned int line_delim_len = 2;
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#else
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static const wchar_t w_line_delim[] = L"\n";
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static const char line_delim[] = "\n";
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static const unsigned int line_delim_len = 2;
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#endif
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typedef struct string_t {
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char *sz; /* standard null-terminated string */
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unsigned int len; /* number of chars in the allocated buffer */
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unsigned int used; /* number of used chars */
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} *string;
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#ifdef STRING_MODULE_DEBUG
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#define assert_valid_string(str) \
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assert (((str) != NULL) \
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&& ((str)->sz != NULL) \
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&& ((str)->used + 1 <= (str)->len));
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static void
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string_dump (struct string_t *str, FILE *out)
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{
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assert_valid_string (str);
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assert (out);
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fprintf (out, "string_dump: str->sz = %s (%p)\n", str->sz, str->sz);
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fprintf (out, "string_dump: *(str->sz) = %d\n", *(str->sz));
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fprintf (out, "string_dump: str->len = %u\n", str->len);
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fprintf (out, "string_dump: str->used = %u\n", str->used);
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}
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#define DEBUG_PRINTF(x) printf x
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#else /* not defined STRING_MODULE_DEBUG */
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#define assert_valid_string(str) do {} while (0);
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#define string_dump(str, out) do {} while (0);
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#define DEBUG_PRINTF(x) do {} while (0);
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#endif
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void
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string_init (struct string_t *s, unsigned int len)
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{
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size_t to_alloc;
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/* no need to check that len > 0, since the len == 0 case is ok */
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assert (s != NULL);
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/*
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* for the moment we try to perform a reasonable allocation by rounding up
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* the number of requested chars (including the trailing zero) to the
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* closest multiple of 256, but we should probably find a better allocation
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* policy or completely leave the optimization of memory allocation to malloc
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*/
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to_alloc = ((len + 1 + 256) & (~0xFF));
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s->sz = (char *) xmalloc (to_alloc * sizeof (char));
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*(s->sz) = '\0';
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s->len = to_alloc;
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s->used = 0;
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string_dump (s, stdout);
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}
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void
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string_copy (struct string_t *dst, const void *src, unsigned int len)
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{
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assert_valid_string (dst);
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assert (src != NULL);
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/* no need to do anything */
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if (len == 0) return;
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if (dst->sz == NULL) {
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string_init (dst, len);
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}
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strncpy (dst->sz, (const char *) src, len);
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dst->sz[len] = '\0';
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dst->used = len;
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}
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void
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string_cat (struct string_t *dst, const void *src, unsigned int len)
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{
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assert_valid_string (dst);
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assert (src != NULL);
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/* no need to do anything */
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if (len == 0) return;
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if (dst->sz == NULL) {
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string_init (dst, len);
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}
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strncpy (dst->sz + dst->used, (const char *) src, len);
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dst->sz[dst->used + len] = '\0';
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dst->used += len;
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}
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void
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string_ready (struct string_t *str, unsigned int len)
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{
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assert_valid_string (str);
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/* no need to do anything */
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if (len == 0) return;
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if (str->len - str->used < len)
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{
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DEBUG_PRINTF (("calling xrealloc"));
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str->sz = xrealloc (str->sz, str->len + len);
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}
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str->len += len;
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}
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void
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string_destroy (struct string_t *str)
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{
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assert_valid_string (str);
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xfree_null (str->sz);
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memset (str, 0, sizeof (*str));
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}
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#if 0 /* unused */
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static void
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string_append_delim (struct string_t *dst)
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{
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assert_valid_string (dst);
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string_cat (dst, line_delim, line_delim_len);
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}
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#endif
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static int
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is_line_delim (const wchar_t *wsz)
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{
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assert (wsz != NULL);
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if (*wsz == L'\r' && *(wsz + 1) == L'\n') {
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return 2;
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} else if (*wsz == L'\r' || *wsz == L'\n') {
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return 1;
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}
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return 0;
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}
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/*
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* DEST is the string to which the multibyte stuff will be added
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* TO_ESC is the null wide char string to add
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*/
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static void
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string_append_multibyte (struct string_t *dest, const wchar_t *wstr, unsigned int len, mbstate_t *state)
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{
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int i;
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assert_valid_string (dest);
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assert (wstr != NULL);
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assert (state != NULL);
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/* nothing to do */
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if (len == 0) return;
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string_ready (dest, 4 * MB_CUR_MAX * (len + 1));
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DEBUG_PRINTF (("string_append_multibyte: len = %u\n", len));
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string_dump (dest, stdout);
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for (i = 0; len > 0; ++i, --len) {
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size_t copied = wcrtomb (dest->sz + dest->used, *(wstr + i), state);
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DEBUG_PRINTF (("string_append_multibyte (loop): i = %d\n", i));
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DEBUG_PRINTF (("string_append_multibyte (loop): copied = %u\n", copied));
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string_dump (dest, stdout);
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if (copied == (size_t)(-1)) {
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perror ("wcrtomb");
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exit (EXIT_FAILURE);
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}
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dest->used += copied;
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*(dest->sz + dest->used) = '\0';
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DEBUG_PRINTF (("string_append_multibyte (loop): processed %s\n", dest->sz + dest->used - copied));
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}
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}
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static void
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string_append_multibyte_newline (struct string_t *dest, mbstate_t *state)
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{
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assert_valid_string (dest);
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string_append_multibyte(dest, w_line_delim, line_delim_len, state);
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}
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static void
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string_append_multibyte_terminator (struct string_t *dest, mbstate_t *state)
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{
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const wchar_t terminator = L'\0';
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assert_valid_string (dest);
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string_append_multibyte(dest, &terminator, 1, state);
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}
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/*
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* DEST is the string to which the escape code will be added
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* TO_ESC is the (not necessarily null terminated) string to escape
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* LEN is the length of the string to escape
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*/
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static void
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do_escape (struct string_t *dest, const char *to_esc, unsigned int len, mbstate_t *state)
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{
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/* we only need to allocate 5 chars for byte:
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* - one for the leading backslash
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* - three for the octal representation
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* - one for the trailing zero */
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wchar_t buf[8] = L"";
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size_t buf_elems = sizeof(buf)/sizeof(buf[0]);
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int i;
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assert_valid_string (dest);
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assert (to_esc != NULL);
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assert (state != NULL);
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/* nothing to do */
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if (len == 0) return;
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DEBUG_PRINTF (("do_escape: len = %d\n", len));
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string_dump (dest, stdout);
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for (i = 0; len > 0; ++i, --len) {
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int j = (unsigned char)*(to_esc + i);
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int cc = swprintf (buf, buf_elems, L"\\%03o", j);
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assert(cc > 0 && cc < buf_elems);
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DEBUG_PRINTF (("do_escape (loop): escaping \\%03o\n", j));
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buf[buf_elems - 1] = L'\0';
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assert (wcslen(buf) == 4);
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string_append_multibyte (dest, buf, 4, state);
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}
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}
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static void
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string_escape (struct string_t *str)
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{
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wchar_t c;
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int i;
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mbstate_t state1, state2;
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size_t ret;
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unsigned int to_read;
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struct string_t src;
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int delim_size;
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assert_valid_string (str);
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memset (&state1, '\0', sizeof (state1));
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memset (&state2, '\0', sizeof (state2));
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src = *str;
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to_read = src.used + 1;
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/* this value is completely arbitrary */
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string_init (str, 4 * to_read);
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DEBUG_PRINTF (("string_escape: dumping string src"));
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string_dump (&src, stdout);
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DEBUG_PRINTF (("string_escape: dumping string str"));
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string_dump (str, stdout);
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i = 0;
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while ((ret = mbrtowc (&c, src.sz + i, to_read, &state1)) != 0) {
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DEBUG_PRINTF (("string_escape (loop): ret = %d\n", ret));
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if (ret == (size_t)(-2)) {
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DEBUG_PRINTF (("string_escape (loop): handling ret == -2"));
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/* mauro: should we just return the portion of the string already
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* processed and print an error message? */
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perror ("mbrtowc");
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exit (EXIT_FAILURE);
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} else if (ret == (size_t)(-1)) {
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DEBUG_PRINTF (("string_escape (loop): handling ret == -1"));
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do_escape (str, src.sz + i, 1, &state2);
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i++;
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} else if ((delim_size = is_line_delim(&c))) {
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DEBUG_PRINTF (("string_escape (loop): handling ret == line_delim"));
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i += delim_size;
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string_append_multibyte_newline (str, &state2);
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} else if (iswprint(c) || iswblank(c)) {
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DEBUG_PRINTF (("string_escape (loop): handling ret == blank | printable"));
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string_append_multibyte (str, &c, 1, &state2);
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if (c == L'\\') {
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/* since the backslash character is used to escape unprintable data,
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* in order to avoid ambiguities in the escaped string we have to
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* escape backslashes as well */
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string_append_multibyte (str, &c, 1, &state2);
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}
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i += ret;
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} else {
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DEBUG_PRINTF (("string_escape (loop): handling ret == toescape"));
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do_escape (str, src.sz + i, ret, &state2);
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i += ret;
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}
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}
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string_append_multibyte_terminator (str, &state2);
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string_destroy (&src);
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}
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/*
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* BUF must be a null-terminated dynamically allocated string
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* LEN is the size of the string BUF
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*/
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void
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escape_buffer (char **buf, size_t len)
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{
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struct string_t s;
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assert (buf != NULL && *buf != NULL);
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/* nothing to do */
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if (len == 0) return;
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DEBUG_PRINTF (("escape_buffer processing: %s (len %u)\n", *buf, len));
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s.sz = *buf;
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s.used = len;
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s.len = len + 1;
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string_escape (&s);
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*buf = s.sz;
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}
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#ifdef STANDALONE
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int main(void)
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{
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char *buf;
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const size_t buflen = 512;
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buf = (char *) xmalloc(buflen);
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assert (buf != NULL);
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puts ("--------------------------------------------------------------------------------");
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while (fgets (buf, buflen - 1, stdin) != NULL)
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{
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/* just in case... */
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buf[buflen - 1] = '\0';
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printf ("before escape: %s", buf);
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escape_buffer (&buf, strlen(buf));
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printf ("after escape: %s", buf);
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}
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puts ("--------------------------------------------------------------------------------");
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return 0;
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}
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#endif
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/*
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* vim: et ts=2 sw=2
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*/
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@ -1,37 +0,0 @@
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/*
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* string_t.h - declarations for dynamic string handling module
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*
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* Copyright (C) 2005 Free Software Foundation, Inc.
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*
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* This file is part of GNU Wget.
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*
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* 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
|
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* (at your option) any later version.
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*
|
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* 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.
|
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*
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||||
* You should have received a copy of the GNU General Public License
|
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* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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* In addition, as a special exception, the Free Software Foundation
|
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* gives permission to link the code of its release of Wget with the
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* OpenSSL project's "OpenSSL" library (or with modified versions of it
|
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* 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.
|
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*/
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#ifndef WGET_STRING_T_H
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#define WGET_STRING_T_H
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void escape_buffer PARAMS ((char **, size_t));
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#endif /* WGET_STRING_T_H */
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