199 lines
3.1 KiB
C
199 lines
3.1 KiB
C
/***************************************************************************
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gb_str.c
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(c) 2000-2017 Benoît Minisini <benoit.minisini@gambas-basic.org>
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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 2, 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., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA.
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***************************************************************************/
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#define __GB_STR_C
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#include <ctype.h>
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#include "gb_common.h"
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#include "gb_error.h"
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#include "gb_limit.h"
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#include "gb_alloc.h"
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#include "gb_str.h"
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static char *_free_later = NULL;
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static char *_last_str = NULL;
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static int _last_len = 0;
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void STR_vadd(char **str, const char *fmt, va_list args)
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{
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va_list copy;
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int len, add;
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char *new;
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va_copy(copy, args);
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add = vsnprintf(NULL, 0, fmt, args);
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if (*str)
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len = (*str == _last_str ? _last_len : strlen(*str));
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else
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len = 0;
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ALLOC(&new, len + add + 1);
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if (*str) strcpy(new, *str);
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vsprintf(&new[len], fmt, copy);
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va_end(copy);
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*str = new;
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_last_str = new;
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_last_len = len + add;
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}
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void STR_add(char **str, const char *fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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STR_vadd(str, fmt, args);
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va_end(args);
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}
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char *STR_copy_len(const char *str, int len)
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{
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char *cpy;
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ALLOC(&cpy, len + 1);
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memcpy(cpy, str, len + 1);
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return cpy;
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}
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char *STR_copy(const char *str)
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{
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return STR_copy_len(str, strlen(str));
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}
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static char *str_add(char *d, const char *s)
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{
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for(;;)
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{
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if ((*d = *s) == 0)
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break;
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d++;
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s++;
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}
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return d;
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}
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char *STR_cat(const char *str, ...)
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{
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va_list args;
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char *cpy;
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char *p;
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int len = 0;
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va_start(args, str);
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p = (char *)str;
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while (p)
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{
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len += strlen(p);
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p = va_arg(args, char *);
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}
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va_end(args);
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ALLOC(&cpy, len + 1);
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p = cpy;
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va_start(args, str);
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while (str)
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{
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p = str_add(p, str);
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str = va_arg(args, char *);
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}
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va_end(args);
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return cpy;
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}
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char *STR_upper(const char *str)
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{
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char *s;
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char *p;
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p = s = STR_copy(str);
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while (*p)
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{
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*p = toupper(*p);
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p++;
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}
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return s;
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}
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char *STR_lower(const char *str)
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{
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char *s;
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char *p;
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p = s = STR_copy(str);
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while (*p)
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{
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*p = tolower(*p);
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p++;
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}
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return s;
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}
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char *STR_free_later(char *str)
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{
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if (_free_later)
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STR_free(_free_later);
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_free_later = str;
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return str;
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}
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char *STR_print(const char *fmt, ...)
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{
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va_list args;
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char *str = NULL;
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va_start(args, fmt);
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STR_vadd(&str, fmt, args);
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va_end(args);
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return str;
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}
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