728 lines
12 KiB
C
728 lines
12 KiB
C
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/***************************************************************************
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String.c
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The String management routines
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(c) 2000-2007 Benoit Minisini <gambas@users.sourceforge.net>
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This program 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 1, or (at your option)
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any later version.
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This program 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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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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***************************************************************************/
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#define __STRING_C
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#include "gb_common.h"
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#include "gb_common_buffer.h"
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#include "gb_common_case.h"
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#include "gb_error.h"
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#include "gbx_value.h"
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#include "gbx_debug.h"
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#include "gbx_local.h"
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#include <unistd.h>
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#include <pwd.h>
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#include <ctype.h>
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#include <iconv.h>
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#include "gbx_string.h"
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#if DEBUG_STRING
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#define DEBUG_ME
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#endif
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#define STRING_last_count 32
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static char *STRING_last[STRING_last_count] = { 0 };
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static char _char_string[512] = { 0 };
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static int _index = 0;
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//static HASH_TABLE *_intern = NULL;
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void STRING_new(char **ptr, const char *src, int len)
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{
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STRING *str;
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if (len <= 0 && src != NULL)
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len = strlen(src);
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if (len <= 0)
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{
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*ptr = NULL;
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return;
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}
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ALLOC(&str, len + 1 + sizeof(STRING), "STRING_new");
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str->len = len;
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str->ref = 1;
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if (src != NULL)
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memcpy(str->data, src, len);
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str->data[len] = 0;
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*ptr = str->data;
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#ifdef DEBUG_ME
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DEBUG_where();
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printf("STRING_new %p ( 0 ) \"%.*s\"\n", *ptr, len, src);
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fflush(NULL);
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#endif
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}
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static void post_free(char *ptr)
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{
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/*if (NLast >= MAX_LAST_STRING)
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THROW(E_STRING);*/
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#ifdef DEBUG_ME
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if (STRING_last[_index])
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{
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DEBUG_where();
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printf("STRING: release temp: %p '%s'\n", STRING_last[_index], STRING_last[_index]);
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fflush(NULL);
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}
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#endif
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STRING_unref(&STRING_last[_index]);
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#ifdef DEBUG_ME
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printf("STRING: post temp: %p '%s'\n", ptr, ptr);
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fflush(NULL);
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#endif
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STRING_last[_index] = ptr;
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_index++;
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if (_index >= STRING_last_count)
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_index = 0;
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}
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PUBLIC int STRING_get_free_index(void)
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{
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return _index;
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}
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void STRING_new_temp(char **ptr, const char *src, int len)
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{
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STRING_new(ptr, src, len);
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if (*ptr)
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post_free(*ptr);
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}
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/*void STRING_init(void)
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{
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HASH_TABLE_create(&_intern, 0, GB_COMP_TEXT);
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}*/
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void STRING_exit(void)
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{
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int i;
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for (i = 0; i < STRING_last_count; i++)
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{
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/*if (STRING_last[i])
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printf("release temp %p '%s'\n", STRING_last[i], STRING_last[i]);*/
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STRING_unref(&STRING_last[i]);
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STRING_last[i] = NULL;
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}
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_index = 0;
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}
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void STRING_extend(char **ptr, int new_len)
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{
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STRING *str;
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int len = STRING_length(*ptr);
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if (new_len == len)
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return;
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if (new_len == 0)
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{
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STRING_free(ptr);
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return;
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}
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if (len == 0)
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{
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ALLOC(&str, new_len + 1 + sizeof(STRING), "STRING_extend");
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str->ref = 1;
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}
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else
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{
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str = STRING_from_ptr(*ptr);
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REALLOC(&str, new_len + 1 + sizeof(STRING), "STRING_extend");
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}
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str->len = new_len;
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*ptr = str->data;
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}
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void STRING_extend_end(char **ptr)
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{
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if (*ptr)
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{
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(*ptr)[STRING_length(*ptr)] = 0;
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post_free(*ptr);
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}
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}
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void STRING_copy_from_value_temp(char **ptr, VALUE *value)
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{
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if (value->_string.len == 0)
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*ptr = NULL;
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else if (value->type == T_STRING && value->_string.start == 0 && value->_string.len == STRING_length(value->_string.addr))
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*ptr = value->_string.addr;
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else
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STRING_new_temp(ptr, &value->_string.addr[value->_string.start], value->_string.len);
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}
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/* Attention ! Contrairement <20>STRING_new, STRING_new_temp_value cr<63> des
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cha<EFBFBD>es temporaires.
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*/
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void STRING_new_temp_value(VALUE *value, const char *src, int len)
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{
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STRING_new_temp(&(value->_string.addr), src, len);
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value->_string.len = STRING_length(value->_string.addr);
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value->_string.start = 0;
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value->type = T_STRING;
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}
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void STRING_new_constant_value(VALUE *value, const char *src, int len)
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{
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value->_string.addr = (char *)src;
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value->_string.len = ((len < 0) ? strlen(src) : len);
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value->_string.start = 0;
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value->type = T_CSTRING;
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}
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void STRING_void_value(VALUE *value)
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{
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value->type = T_CSTRING;
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value->_string.addr = NULL;
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value->_string.start = 0;
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value->_string.len = 0;
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}
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void STRING_char_value(VALUE *value, uchar car)
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{
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char *addr = &_char_string[(int)car * 2];
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value->type = T_CSTRING;
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value->_string.addr = addr;
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value->_string.start = 0;
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value->_string.len = 1;
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*addr = car;
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}
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void STRING_free(char **ptr)
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{
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STRING *str;
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if (*ptr == NULL)
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return;
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str = STRING_from_ptr(*ptr);
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#ifdef DEBUG_ME
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DEBUG_where();
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printf("STRING_free %p %p\n", *ptr, ptr);
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fflush(NULL);
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#endif
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str->ref = 1000000000L;
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FREE(&str, "STRING_free");
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*ptr = NULL;
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#ifdef DEBUG_ME
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printf("OK\n");
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#endif
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}
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int STRING_comp_value(VALUE *str1, VALUE *str2)
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{
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uint i;
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int len = Min(str1->_string.len, str2->_string.len);
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int diff;
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register const char *s1;
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register const char *s2;
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register char c1, c2;
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s1 = str1->_string.addr + str1->_string.start;
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s2 = str2->_string.addr + str2->_string.start;
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for (i = 0; i < len; i++)
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{
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c1 = s1[i];
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c2 = s2[i];
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if (c1 > c2) return 1;
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if (c1 < c2) return -1;
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}
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diff = str1->_string.len - str2->_string.len;
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return (diff < 0) ? (-1) : (diff > 0) ? 1 : 0;
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}
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PUBLIC int STRING_comp_value_ignore_case(VALUE *str1, VALUE *str2)
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{
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int i;
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int len = Min(str1->_string.len, str2->_string.len);
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int diff;
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register const char *s1;
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register const char *s2;
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register char c1, c2;
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s1 = str1->_string.addr + str1->_string.start;
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s2 = str2->_string.addr + str2->_string.start;
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for (i = 0; i < len; i++)
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{
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c1 = tolower(s1[i]);
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c2 = tolower(s2[i]);
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if (c1 > c2) return 1;
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if (c1 < c2) return -1;
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}
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diff = str1->_string.len - str2->_string.len;
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return (diff < 0) ? (-1) : (diff > 0) ? 1 : 0;
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}
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#if DEBUG_STRING
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void STRING_ref(char *ptr)
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{
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STRING *str;
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if (ptr == NULL)
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return;
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str = STRING_from_ptr(ptr);
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#ifdef DEBUG_ME
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DEBUG_where();
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printf("STRING_ref %p ( %ld -> %ld )\n", ptr, str->ref, str->ref + 1);
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if (str->ref < 0 || str->ref > 10000)
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printf("*** BAD\n");
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fflush(NULL);
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#endif
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str->ref++;
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}
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void STRING_unref(char **ptr)
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{
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STRING *str;
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if (*ptr == NULL)
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return;
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str = STRING_from_ptr(*ptr);
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#ifdef DEBUG_ME
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DEBUG_where();
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printf("STRING_unref %p ( %ld -> %ld )\n", *ptr, str->ref, str->ref - 1);
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if (str->ref < 1 || str->ref > 10000)
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printf("*** BAD\n");
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fflush(NULL);
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#endif
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if ((--str->ref) <= 0)
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STRING_free(ptr);
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}
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#endif
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void STRING_unref_keep(char **ptr)
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{
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STRING *str;
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if (*ptr == NULL)
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return;
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str = STRING_from_ptr(*ptr);
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if (str->ref > 1)
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str->ref--;
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else
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post_free(*ptr);
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}
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PUBLIC char *STRING_subst(const char *str, int len, SUBST_FUNC get_param)
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{
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uint i;
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uchar c, d;
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int np;
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char *p;
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int lp;
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if (!str)
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return NULL;
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SUBST_init();
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if (len <= 0)
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len = strlen(str);
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for (i = 0; i < len; i++)
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{
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c = str[i];
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if (c == '&' && (i < (len - 1)))
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{
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d = str[i + 1];
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if (isdigit(d))
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{
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np = d - '0';
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i++;
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if (i < (len - 1))
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{
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d = str[i + 1];
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if (isdigit(d))
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{
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np = np * 10 + d - '0';
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i++;
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}
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}
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p = NULL;
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lp = 0;
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(*get_param)(np, &p, &lp);
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if (p)
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SUBST_add(p, lp);
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continue;
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}
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else if (d == '&')
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i++;
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}
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SUBST_add_char(c);
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}
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SUBST_exit();
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return SUBST_buffer();
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}
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PUBLIC void STRING_add(char **ptr, const char *src, int len)
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{
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int old_len;
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if (len <= 0 && src != NULL)
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len = strlen(src);
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if (len <= 0)
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return;
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old_len = STRING_length(*ptr);
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STRING_extend(ptr, old_len + len);
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memcpy(&((*ptr)[old_len]), src, len);
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(*ptr)[old_len + len] = 0;
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}
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PUBLIC int STRING_conv(char **result, const char *str, int len, const char *src, const char *dst, bool throw)
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{
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iconv_t handle;
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bool err;
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const char *in;
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char *out;
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size_t in_len;
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size_t out_len;
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size_t ret;
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int errcode = 0;
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*result = NULL;
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in = str;
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in_len = len;
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if (len == 0)
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|
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);
|
|||
|
}*/
|