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mirror of https://github.com/moparisthebest/wget synced 2024-07-03 16:38:41 -04:00

[svn] Removed (not used anymore) string_t.{c,h}.

This commit is contained in:
mtortonesi 2005-04-04 20:21:23 -07:00
parent 4b57f166ae
commit 6dc9563cca
3 changed files with 6 additions and 461 deletions

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@ -1,3 +1,9 @@
2005-04-04 Mauro Tortonesi <mauro@ferrara.linux.it>
* string.c: Removed.
* string.h: Removed.
2005-04-02 Hrvoje Niksic <hniksic@xemacs.org> 2005-04-02 Hrvoje Niksic <hniksic@xemacs.org>
* url.c (rewrite_shorthand_url): Only accept recognized schemes. * url.c (rewrite_shorthand_url): Only accept recognized schemes.

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/*
* string_t.c - dynamic string handling module
*
* Copyright (C) 2005 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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.
*/
#include "config.h"
#define _GNU_SOURCE /* to get iswblank */
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include <wctype.h>
#include "wget.h"
#ifdef STANDALONE
#undef xmalloc
#undef xrealloc
#undef xfree_null
#define xmalloc malloc
#define xrealloc realloc
#define xfree_null(p) if (!(p)) ; else free (p)
#else
#include "xmalloc.h"
#endif
#ifdef WINDOWS
static const wchar_t w_line_delim[] = L"\r\n";
static const char line_delim[] = "\r\n";
static const unsigned int line_delim_len = 2;
#else
static const wchar_t w_line_delim[] = L"\n";
static const char line_delim[] = "\n";
static const unsigned int line_delim_len = 2;
#endif
typedef struct string_t {
char *sz; /* standard null-terminated string */
unsigned int len; /* number of chars in the allocated buffer */
unsigned int used; /* number of used chars */
} *string;
#ifdef STRING_MODULE_DEBUG
#define assert_valid_string(str) \
assert (((str) != NULL) \
&& ((str)->sz != NULL) \
&& ((str)->used + 1 <= (str)->len));
static void
string_dump (struct string_t *str, FILE *out)
{
assert_valid_string (str);
assert (out);
fprintf (out, "string_dump: str->sz = %s (%p)\n", str->sz, str->sz);
fprintf (out, "string_dump: *(str->sz) = %d\n", *(str->sz));
fprintf (out, "string_dump: str->len = %u\n", str->len);
fprintf (out, "string_dump: str->used = %u\n", str->used);
}
#define DEBUG_PRINTF(x) printf x
#else /* not defined STRING_MODULE_DEBUG */
#define assert_valid_string(str) do {} while (0);
#define string_dump(str, out) do {} while (0);
#define DEBUG_PRINTF(x) do {} while (0);
#endif
void
string_init (struct string_t *s, unsigned int len)
{
size_t to_alloc;
/* no need to check that len > 0, since the len == 0 case is ok */
assert (s != NULL);
/*
* for the moment we try to perform a reasonable allocation by rounding up
* the number of requested chars (including the trailing zero) to the
* closest multiple of 256, but we should probably find a better allocation
* policy or completely leave the optimization of memory allocation to malloc
*/
to_alloc = ((len + 1 + 256) & (~0xFF));
s->sz = (char *) xmalloc (to_alloc * sizeof (char));
*(s->sz) = '\0';
s->len = to_alloc;
s->used = 0;
string_dump (s, stdout);
}
void
string_copy (struct string_t *dst, const void *src, unsigned int len)
{
assert_valid_string (dst);
assert (src != NULL);
/* no need to do anything */
if (len == 0) return;
if (dst->sz == NULL) {
string_init (dst, len);
}
strncpy (dst->sz, (const char *) src, len);
dst->sz[len] = '\0';
dst->used = len;
}
void
string_cat (struct string_t *dst, const void *src, unsigned int len)
{
assert_valid_string (dst);
assert (src != NULL);
/* no need to do anything */
if (len == 0) return;
if (dst->sz == NULL) {
string_init (dst, len);
}
strncpy (dst->sz + dst->used, (const char *) src, len);
dst->sz[dst->used + len] = '\0';
dst->used += len;
}
void
string_ready (struct string_t *str, unsigned int len)
{
assert_valid_string (str);
/* no need to do anything */
if (len == 0) return;
if (str->len - str->used < len)
{
DEBUG_PRINTF (("calling xrealloc"));
str->sz = xrealloc (str->sz, str->len + len);
}
str->len += len;
}
void
string_destroy (struct string_t *str)
{
assert_valid_string (str);
xfree_null (str->sz);
memset (str, 0, sizeof (*str));
}
#if 0 /* unused */
static void
string_append_delim (struct string_t *dst)
{
assert_valid_string (dst);
string_cat (dst, line_delim, line_delim_len);
}
#endif
static int
is_line_delim (const wchar_t *wsz)
{
assert (wsz != NULL);
if (*wsz == L'\r' && *(wsz + 1) == L'\n') {
return 2;
} else if (*wsz == L'\r' || *wsz == L'\n') {
return 1;
}
return 0;
}
/*
* DEST is the string to which the multibyte stuff will be added
* TO_ESC is the null wide char string to add
*/
static void
string_append_multibyte (struct string_t *dest, const wchar_t *wstr, unsigned int len, mbstate_t *state)
{
int i;
assert_valid_string (dest);
assert (wstr != NULL);
assert (state != NULL);
/* nothing to do */
if (len == 0) return;
string_ready (dest, 4 * MB_CUR_MAX * (len + 1));
DEBUG_PRINTF (("string_append_multibyte: len = %u\n", len));
string_dump (dest, stdout);
for (i = 0; len > 0; ++i, --len) {
size_t copied = wcrtomb (dest->sz + dest->used, *(wstr + i), state);
DEBUG_PRINTF (("string_append_multibyte (loop): i = %d\n", i));
DEBUG_PRINTF (("string_append_multibyte (loop): copied = %u\n", copied));
string_dump (dest, stdout);
if (copied == (size_t)(-1)) {
perror ("wcrtomb");
exit (EXIT_FAILURE);
}
dest->used += copied;
*(dest->sz + dest->used) = '\0';
DEBUG_PRINTF (("string_append_multibyte (loop): processed %s\n", dest->sz + dest->used - copied));
}
}
static void
string_append_multibyte_newline (struct string_t *dest, mbstate_t *state)
{
assert_valid_string (dest);
string_append_multibyte(dest, w_line_delim, line_delim_len, state);
}
static void
string_append_multibyte_terminator (struct string_t *dest, mbstate_t *state)
{
const wchar_t terminator = L'\0';
assert_valid_string (dest);
string_append_multibyte(dest, &terminator, 1, state);
}
/*
* DEST is the string to which the escape code will be added
* TO_ESC is the (not necessarily null terminated) string to escape
* LEN is the length of the string to escape
*/
static void
do_escape (struct string_t *dest, const char *to_esc, unsigned int len, mbstate_t *state)
{
/* we only need to allocate 5 chars for byte:
* - one for the leading backslash
* - three for the octal representation
* - one for the trailing zero */
wchar_t buf[8] = L"";
size_t buf_elems = sizeof(buf)/sizeof(buf[0]);
int i;
assert_valid_string (dest);
assert (to_esc != NULL);
assert (state != NULL);
/* nothing to do */
if (len == 0) return;
DEBUG_PRINTF (("do_escape: len = %d\n", len));
string_dump (dest, stdout);
for (i = 0; len > 0; ++i, --len) {
int j = (unsigned char)*(to_esc + i);
int cc = swprintf (buf, buf_elems, L"\\%03o", j);
assert(cc > 0 && cc < buf_elems);
DEBUG_PRINTF (("do_escape (loop): escaping \\%03o\n", j));
buf[buf_elems - 1] = L'\0';
assert (wcslen(buf) == 4);
string_append_multibyte (dest, buf, 4, state);
}
}
static void
string_escape (struct string_t *str)
{
wchar_t c;
int i;
mbstate_t state1, state2;
size_t ret;
unsigned int to_read;
struct string_t src;
int delim_size;
assert_valid_string (str);
memset (&state1, '\0', sizeof (state1));
memset (&state2, '\0', sizeof (state2));
src = *str;
to_read = src.used + 1;
/* this value is completely arbitrary */
string_init (str, 4 * to_read);
DEBUG_PRINTF (("string_escape: dumping string src"));
string_dump (&src, stdout);
DEBUG_PRINTF (("string_escape: dumping string str"));
string_dump (str, stdout);
i = 0;
while ((ret = mbrtowc (&c, src.sz + i, to_read, &state1)) != 0) {
DEBUG_PRINTF (("string_escape (loop): ret = %d\n", ret));
if (ret == (size_t)(-2)) {
DEBUG_PRINTF (("string_escape (loop): handling ret == -2"));
/* mauro: should we just return the portion of the string already
* processed and print an error message? */
perror ("mbrtowc");
exit (EXIT_FAILURE);
} else if (ret == (size_t)(-1)) {
DEBUG_PRINTF (("string_escape (loop): handling ret == -1"));
do_escape (str, src.sz + i, 1, &state2);
i++;
} else if ((delim_size = is_line_delim(&c))) {
DEBUG_PRINTF (("string_escape (loop): handling ret == line_delim"));
i += delim_size;
string_append_multibyte_newline (str, &state2);
} else if (iswprint(c) || iswblank(c)) {
DEBUG_PRINTF (("string_escape (loop): handling ret == blank | printable"));
string_append_multibyte (str, &c, 1, &state2);
if (c == L'\\') {
/* since the backslash character is used to escape unprintable data,
* in order to avoid ambiguities in the escaped string we have to
* escape backslashes as well */
string_append_multibyte (str, &c, 1, &state2);
}
i += ret;
} else {
DEBUG_PRINTF (("string_escape (loop): handling ret == toescape"));
do_escape (str, src.sz + i, ret, &state2);
i += ret;
}
}
string_append_multibyte_terminator (str, &state2);
string_destroy (&src);
}
/*
* BUF must be a null-terminated dynamically allocated string
* LEN is the size of the string BUF
*/
void
escape_buffer (char **buf, size_t len)
{
struct string_t s;
assert (buf != NULL && *buf != NULL);
/* nothing to do */
if (len == 0) return;
DEBUG_PRINTF (("escape_buffer processing: %s (len %u)\n", *buf, len));
s.sz = *buf;
s.used = len;
s.len = len + 1;
string_escape (&s);
*buf = s.sz;
}
#ifdef STANDALONE
int main(void)
{
char *buf;
const size_t buflen = 512;
buf = (char *) xmalloc(buflen);
assert (buf != NULL);
puts ("--------------------------------------------------------------------------------");
while (fgets (buf, buflen - 1, stdin) != NULL)
{
/* just in case... */
buf[buflen - 1] = '\0';
printf ("before escape: %s", buf);
escape_buffer (&buf, strlen(buf));
printf ("after escape: %s", buf);
}
puts ("--------------------------------------------------------------------------------");
return 0;
}
#endif
/*
* vim: et ts=2 sw=2
*/

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/*
* string_t.h - declarations for dynamic string handling module
*
* Copyright (C) 2005 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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.
*/
#ifndef WGET_STRING_T_H
#define WGET_STRING_T_H
void escape_buffer PARAMS ((char **, size_t));
#endif /* WGET_STRING_T_H */