727 lines
12 KiB
C
727 lines
12 KiB
C
/***************************************************************************
|
||
|
||
String.c
|
||
|
||
The String management routines
|
||
|
||
(c) 2000-2007 Benoit Minisini <gambas@users.sourceforge.net>
|
||
|
||
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 1, 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.
|
||
|
||
***************************************************************************/
|
||
|
||
#define __STRING_C
|
||
|
||
#include "gb_common.h"
|
||
#include "gb_common_buffer.h"
|
||
#include "gb_common_case.h"
|
||
#include "gb_error.h"
|
||
#include "gbx_value.h"
|
||
#include "gbx_debug.h"
|
||
#include "gbx_local.h"
|
||
|
||
#include <unistd.h>
|
||
#include <pwd.h>
|
||
#include <ctype.h>
|
||
#include <iconv.h>
|
||
|
||
#include "gbx_string.h"
|
||
|
||
#if DEBUG_STRING
|
||
#define DEBUG_ME
|
||
#endif
|
||
|
||
#define STRING_last_count 32
|
||
static char *STRING_last[STRING_last_count] = { 0 };
|
||
|
||
static char _char_string[512] = { 0 };
|
||
static int _index = 0;
|
||
|
||
//static HASH_TABLE *_intern = NULL;
|
||
|
||
void STRING_new(char **ptr, const char *src, int len)
|
||
{
|
||
STRING *str;
|
||
|
||
if (len <= 0 && src != NULL)
|
||
len = strlen(src);
|
||
|
||
if (len <= 0)
|
||
{
|
||
*ptr = NULL;
|
||
return;
|
||
}
|
||
|
||
ALLOC(&str, len + 1 + sizeof(STRING), "STRING_new");
|
||
|
||
str->len = len;
|
||
str->ref = 1;
|
||
|
||
if (src != NULL)
|
||
memcpy(str->data, src, len);
|
||
|
||
str->data[len] = 0;
|
||
|
||
*ptr = str->data;
|
||
|
||
#ifdef DEBUG_ME
|
||
DEBUG_where();
|
||
printf("STRING_new %p ( 0 ) \"%.*s\"\n", *ptr, len, src);
|
||
fflush(NULL);
|
||
#endif
|
||
}
|
||
|
||
static void post_free(char *ptr)
|
||
{
|
||
/*if (NLast >= MAX_LAST_STRING)
|
||
THROW(E_STRING);*/
|
||
|
||
#ifdef DEBUG_ME
|
||
if (STRING_last[_index])
|
||
{
|
||
DEBUG_where();
|
||
printf("STRING: release temp: %p '%s'\n", STRING_last[_index], STRING_last[_index]);
|
||
fflush(NULL);
|
||
}
|
||
#endif
|
||
|
||
STRING_unref(&STRING_last[_index]);
|
||
|
||
#ifdef DEBUG_ME
|
||
printf("STRING: post temp: %p '%s'\n", ptr, ptr);
|
||
fflush(NULL);
|
||
#endif
|
||
|
||
STRING_last[_index] = ptr;
|
||
|
||
_index++;
|
||
|
||
if (_index >= STRING_last_count)
|
||
_index = 0;
|
||
}
|
||
|
||
|
||
PUBLIC int STRING_get_free_index(void)
|
||
{
|
||
return _index;
|
||
}
|
||
|
||
void STRING_new_temp(char **ptr, const char *src, int len)
|
||
{
|
||
STRING_new(ptr, src, len);
|
||
if (*ptr)
|
||
post_free(*ptr);
|
||
}
|
||
|
||
|
||
/*void STRING_init(void)
|
||
{
|
||
HASH_TABLE_create(&_intern, 0, GB_COMP_TEXT);
|
||
}*/
|
||
|
||
void STRING_exit(void)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < STRING_last_count; i++)
|
||
{
|
||
/*if (STRING_last[i])
|
||
printf("release temp %p '%s'\n", STRING_last[i], STRING_last[i]);*/
|
||
STRING_unref(&STRING_last[i]);
|
||
STRING_last[i] = NULL;
|
||
}
|
||
|
||
_index = 0;
|
||
}
|
||
|
||
|
||
void STRING_extend(char **ptr, int new_len)
|
||
{
|
||
STRING *str;
|
||
int len = STRING_length(*ptr);
|
||
|
||
if (new_len == len)
|
||
return;
|
||
|
||
if (new_len == 0)
|
||
{
|
||
STRING_free(ptr);
|
||
return;
|
||
}
|
||
|
||
if (len == 0)
|
||
{
|
||
ALLOC(&str, new_len + 1 + sizeof(STRING), "STRING_extend");
|
||
str->ref = 1;
|
||
}
|
||
else
|
||
{
|
||
str = STRING_from_ptr(*ptr);
|
||
REALLOC(&str, new_len + 1 + sizeof(STRING), "STRING_extend");
|
||
}
|
||
|
||
str->len = new_len;
|
||
|
||
*ptr = str->data;
|
||
}
|
||
|
||
|
||
void STRING_extend_end(char **ptr)
|
||
{
|
||
if (*ptr)
|
||
{
|
||
(*ptr)[STRING_length(*ptr)] = 0;
|
||
post_free(*ptr);
|
||
}
|
||
}
|
||
|
||
|
||
void STRING_copy_from_value_temp(char **ptr, VALUE *value)
|
||
{
|
||
if (value->_string.len == 0)
|
||
*ptr = NULL;
|
||
else if (value->type == T_STRING && value->_string.start == 0 && value->_string.len == STRING_length(value->_string.addr))
|
||
*ptr = value->_string.addr;
|
||
else
|
||
STRING_new_temp(ptr, &value->_string.addr[value->_string.start], value->_string.len);
|
||
}
|
||
|
||
|
||
/* Attention ! Contrairement <20>STRING_new, STRING_new_temp_value cr<63> des
|
||
cha<68>es temporaires.
|
||
*/
|
||
|
||
void STRING_new_temp_value(VALUE *value, const char *src, int len)
|
||
{
|
||
STRING_new_temp(&(value->_string.addr), src, len);
|
||
|
||
value->_string.len = STRING_length(value->_string.addr);
|
||
value->_string.start = 0;
|
||
value->type = T_STRING;
|
||
}
|
||
|
||
|
||
void STRING_new_constant_value(VALUE *value, const char *src, int len)
|
||
{
|
||
value->_string.addr = (char *)src;
|
||
value->_string.len = ((len < 0) ? strlen(src) : len);
|
||
value->_string.start = 0;
|
||
value->type = T_CSTRING;
|
||
}
|
||
|
||
|
||
void STRING_void_value(VALUE *value)
|
||
{
|
||
value->type = T_CSTRING;
|
||
value->_string.addr = NULL;
|
||
value->_string.start = 0;
|
||
value->_string.len = 0;
|
||
}
|
||
|
||
|
||
void STRING_char_value(VALUE *value, uchar car)
|
||
{
|
||
char *addr = &_char_string[(int)car * 2];
|
||
|
||
value->type = T_CSTRING;
|
||
value->_string.addr = addr;
|
||
value->_string.start = 0;
|
||
value->_string.len = 1;
|
||
|
||
*addr = car;
|
||
}
|
||
|
||
|
||
void STRING_free(char **ptr)
|
||
{
|
||
STRING *str;
|
||
|
||
if (*ptr == NULL)
|
||
return;
|
||
|
||
str = STRING_from_ptr(*ptr);
|
||
|
||
#ifdef DEBUG_ME
|
||
DEBUG_where();
|
||
printf("STRING_free %p %p\n", *ptr, ptr);
|
||
fflush(NULL);
|
||
#endif
|
||
|
||
str->ref = 1000000000L;
|
||
|
||
FREE(&str, "STRING_free");
|
||
*ptr = NULL;
|
||
|
||
#ifdef DEBUG_ME
|
||
printf("OK\n");
|
||
#endif
|
||
}
|
||
|
||
|
||
|
||
int STRING_comp_value(VALUE *str1, VALUE *str2)
|
||
{
|
||
uint i;
|
||
int len = Min(str1->_string.len, str2->_string.len);
|
||
int diff;
|
||
register const char *s1;
|
||
register const char *s2;
|
||
register char c1, c2;
|
||
|
||
s1 = str1->_string.addr + str1->_string.start;
|
||
s2 = str2->_string.addr + str2->_string.start;
|
||
|
||
for (i = 0; i < len; i++)
|
||
{
|
||
c1 = s1[i];
|
||
c2 = s2[i];
|
||
if (c1 > c2) return 1;
|
||
if (c1 < c2) return -1;
|
||
}
|
||
|
||
diff = str1->_string.len - str2->_string.len;
|
||
return (diff < 0) ? (-1) : (diff > 0) ? 1 : 0;
|
||
}
|
||
|
||
|
||
PUBLIC int STRING_comp_value_ignore_case(VALUE *str1, VALUE *str2)
|
||
{
|
||
int i;
|
||
int len = Min(str1->_string.len, str2->_string.len);
|
||
int diff;
|
||
register const char *s1;
|
||
register const char *s2;
|
||
register char c1, c2;
|
||
|
||
s1 = str1->_string.addr + str1->_string.start;
|
||
s2 = str2->_string.addr + str2->_string.start;
|
||
|
||
for (i = 0; i < len; i++)
|
||
{
|
||
c1 = tolower(s1[i]);
|
||
c2 = tolower(s2[i]);
|
||
if (c1 > c2) return 1;
|
||
if (c1 < c2) return -1;
|
||
}
|
||
|
||
diff = str1->_string.len - str2->_string.len;
|
||
return (diff < 0) ? (-1) : (diff > 0) ? 1 : 0;
|
||
}
|
||
|
||
|
||
#if DEBUG_STRING
|
||
|
||
void STRING_ref(char *ptr)
|
||
{
|
||
STRING *str;
|
||
|
||
if (ptr == NULL)
|
||
return;
|
||
|
||
str = STRING_from_ptr(ptr);
|
||
|
||
|
||
#ifdef DEBUG_ME
|
||
DEBUG_where();
|
||
printf("STRING_ref %p ( %ld -> %ld )\n", ptr, str->ref, str->ref + 1);
|
||
if (str->ref < 0 || str->ref > 10000)
|
||
printf("*** BAD\n");
|
||
fflush(NULL);
|
||
#endif
|
||
|
||
str->ref++;
|
||
}
|
||
|
||
|
||
void STRING_unref(char **ptr)
|
||
{
|
||
STRING *str;
|
||
|
||
if (*ptr == NULL)
|
||
return;
|
||
|
||
str = STRING_from_ptr(*ptr);
|
||
|
||
#ifdef DEBUG_ME
|
||
DEBUG_where();
|
||
printf("STRING_unref %p ( %ld -> %ld )\n", *ptr, str->ref, str->ref - 1);
|
||
if (str->ref < 1 || str->ref > 10000)
|
||
printf("*** BAD\n");
|
||
fflush(NULL);
|
||
#endif
|
||
|
||
if ((--str->ref) <= 0)
|
||
STRING_free(ptr);
|
||
}
|
||
|
||
#endif
|
||
|
||
void STRING_unref_keep(char **ptr)
|
||
{
|
||
STRING *str;
|
||
|
||
if (*ptr == NULL)
|
||
return;
|
||
|
||
str = STRING_from_ptr(*ptr);
|
||
if (str->ref > 1)
|
||
str->ref--;
|
||
else
|
||
post_free(*ptr);
|
||
}
|
||
|
||
|
||
PUBLIC char *STRING_subst(const char *str, int len, SUBST_FUNC get_param)
|
||
{
|
||
uint i;
|
||
uchar c, d;
|
||
int np;
|
||
char *p;
|
||
int lp;
|
||
|
||
if (!str)
|
||
return NULL;
|
||
|
||
SUBST_init();
|
||
|
||
if (len <= 0)
|
||
len = strlen(str);
|
||
|
||
for (i = 0; i < len; i++)
|
||
{
|
||
c = str[i];
|
||
if (c == '&' && (i < (len - 1)))
|
||
{
|
||
d = str[i + 1];
|
||
if (isdigit(d))
|
||
{
|
||
np = d - '0';
|
||
i++;
|
||
if (i < (len - 1))
|
||
{
|
||
d = str[i + 1];
|
||
if (isdigit(d))
|
||
{
|
||
np = np * 10 + d - '0';
|
||
i++;
|
||
}
|
||
}
|
||
|
||
p = NULL;
|
||
lp = 0;
|
||
(*get_param)(np, &p, &lp);
|
||
|
||
if (p)
|
||
SUBST_add(p, lp);
|
||
|
||
continue;
|
||
}
|
||
else if (d == '&')
|
||
i++;
|
||
}
|
||
|
||
SUBST_add_char(c);
|
||
}
|
||
|
||
SUBST_exit();
|
||
|
||
return SUBST_buffer();
|
||
}
|
||
|
||
PUBLIC void STRING_add(char **ptr, const char *src, int len)
|
||
{
|
||
int old_len;
|
||
|
||
if (len <= 0 && src != NULL)
|
||
len = strlen(src);
|
||
|
||
if (len <= 0)
|
||
return;
|
||
|
||
old_len = STRING_length(*ptr);
|
||
|
||
STRING_extend(ptr, old_len + len);
|
||
memcpy(&((*ptr)[old_len]), src, len);
|
||
(*ptr)[old_len + len] = 0;
|
||
}
|
||
|
||
|
||
PUBLIC int STRING_conv(char **result, const char *str, int len, const char *src, const char *dst, bool throw)
|
||
{
|
||
iconv_t handle;
|
||
bool err;
|
||
const char *in;
|
||
char *out;
|
||
size_t in_len;
|
||
size_t out_len;
|
||
size_t ret;
|
||
int errcode = 0;
|
||
|
||
*result = NULL;
|
||
|
||
in = str;
|
||
in_len = len;
|
||
|
||
if (len == 0)
|
||
return errcode;
|
||
|
||
if (!dst || *dst == 0)
|
||
dst = "ASCII";
|
||
|
||
if (!src || *src == 0)
|
||
src = "ASCII";
|
||
|
||
handle = iconv_open(dst, src);
|
||
if (handle == (iconv_t)(-1))
|
||
{
|
||
if (errno == EINVAL)
|
||
errcode = E_UCONV;
|
||
else
|
||
errcode = E_CONV;
|
||
}
|
||
else
|
||
{
|
||
err = FALSE;
|
||
|
||
for(;;)
|
||
{
|
||
out = COMMON_buffer;
|
||
out_len = COMMON_BUF_MAX;
|
||
|
||
#if defined(OS_SOLARIS) || defined(OS_FREEBSD)
|
||
ret = iconv(handle, &in, &in_len, &out, &out_len);
|
||
#else
|
||
ret = iconv(handle, (char **)&in, &in_len, &out, &out_len);
|
||
#endif
|
||
|
||
if (ret != (size_t)(-1) || errno == E2BIG)
|
||
STRING_add(result, COMMON_buffer, COMMON_BUF_MAX - out_len);
|
||
|
||
if (ret != (size_t)(-1))
|
||
break;
|
||
|
||
if (errno != E2BIG)
|
||
{
|
||
err = TRUE;
|
||
break;
|
||
}
|
||
}
|
||
|
||
iconv_close(handle);
|
||
|
||
//STRING_add(result, "\0\0\0", sizeof(wchar_t) - 1);
|
||
|
||
STRING_extend_end(result);
|
||
|
||
if (err)
|
||
errcode = E_CONV;
|
||
}
|
||
|
||
if (throw && errcode)
|
||
THROW(errcode);
|
||
|
||
return errcode;
|
||
}
|
||
|
||
|
||
PUBLIC char *STRING_conv_to_UTF8(const char *name, int len)
|
||
{
|
||
char *result = NULL;
|
||
|
||
if (!name)
|
||
return "";
|
||
|
||
if (LOCAL_is_UTF8)
|
||
{
|
||
if (len <= 0)
|
||
result = (char *)name;
|
||
else
|
||
STRING_new_temp(&result, name, len);
|
||
}
|
||
else
|
||
{
|
||
if (len <= 0)
|
||
len = strlen(name);
|
||
|
||
STRING_conv(&result, name, len, LOCAL_encoding, "UTF-8", TRUE);
|
||
}
|
||
|
||
if (result)
|
||
return result;
|
||
else
|
||
return "";
|
||
}
|
||
|
||
|
||
PUBLIC char *STRING_conv_file_name(const char *name, int len)
|
||
{
|
||
char *result = NULL;
|
||
int pos;
|
||
struct passwd *info;
|
||
char *user;
|
||
|
||
if (!name)
|
||
return "";
|
||
|
||
if (len <= 0)
|
||
len = strlen(name);
|
||
|
||
if (len > 0 && *name == '~')
|
||
{
|
||
for (pos = 0; pos < len; pos++)
|
||
{
|
||
if (name[pos] == '/')
|
||
break;
|
||
}
|
||
|
||
if (pos <= 1)
|
||
info = getpwuid(getuid());
|
||
else
|
||
{
|
||
STRING_new_temp(&user, &name[1], pos - 1);
|
||
info = getpwnam(user);
|
||
}
|
||
|
||
if (info)
|
||
{
|
||
STRING_new(&user, info->pw_dir, 0);
|
||
if (pos < len)
|
||
STRING_add(&user, &name[pos], len - pos);
|
||
name = user;
|
||
len = STRING_length(name);
|
||
post_free(user);
|
||
}
|
||
|
||
}
|
||
|
||
if (LOCAL_is_UTF8)
|
||
STRING_new_temp(&result, name, len);
|
||
else
|
||
STRING_conv(&result, name, len, "UTF-8", LOCAL_encoding, TRUE);
|
||
|
||
//fprintf(stderr, "STRING_conv_file_name: %s\n", result);
|
||
|
||
if (result)
|
||
return result;
|
||
else
|
||
return "";
|
||
}
|
||
|
||
|
||
PUBLIC int STRING_search(const char *ps, int ls, const char *pp, int lp, int is, bool right, bool nocase)
|
||
{
|
||
int pos = 0, ip;
|
||
|
||
if (lp > ls)
|
||
goto __FOUND;
|
||
|
||
ls = ls - lp + 1; /* Longueur du début du texte où effectuer la recherche */
|
||
|
||
if (is < 0)
|
||
is = ls - is;
|
||
else if (is == 0)
|
||
is = right ? ls : 1;
|
||
else if (is > ls)
|
||
goto __FOUND;
|
||
|
||
is--;
|
||
|
||
ps += is;
|
||
|
||
if (right)
|
||
{
|
||
if (nocase)
|
||
{
|
||
for (; is >= 0; is--, ps--)
|
||
{
|
||
for (ip = 0; ip < lp; ip++)
|
||
{
|
||
if (tolower(ps[ip]) != tolower(pp[ip]))
|
||
goto __NEXT_RN;
|
||
}
|
||
|
||
pos = is + 1;
|
||
goto __FOUND;
|
||
|
||
__NEXT_RN:
|
||
;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
for (; is >= 0; is--, ps--)
|
||
{
|
||
for (ip = 0; ip < lp; ip++)
|
||
{
|
||
if (ps[ip] != pp[ip])
|
||
goto __NEXT_R;
|
||
}
|
||
|
||
pos = is + 1;
|
||
goto __FOUND;
|
||
|
||
__NEXT_R:
|
||
;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (nocase)
|
||
{
|
||
for (; is < ls; is++, ps++)
|
||
{
|
||
for (ip = 0; ip < lp; ip++)
|
||
{
|
||
if (tolower(ps[ip]) != tolower(pp[ip]))
|
||
goto __NEXT_LN;
|
||
}
|
||
|
||
pos = is + 1;
|
||
goto __FOUND;
|
||
|
||
__NEXT_LN:
|
||
;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
for (; is < ls; is++, ps++)
|
||
{
|
||
for (ip = 0; ip < lp; ip++)
|
||
{
|
||
if (ps[ip] != pp[ip])
|
||
goto __NEXT_L;
|
||
}
|
||
|
||
pos = is + 1;
|
||
goto __FOUND;
|
||
|
||
__NEXT_L:
|
||
;
|
||
}
|
||
}
|
||
}
|
||
|
||
__FOUND:
|
||
|
||
return pos;
|
||
}
|
||
|
||
|
||
/*void *STRING_intern(const char *str, int len)
|
||
{
|
||
return HASH_TABLE_insert(_intern, str, len);
|
||
}*/
|