mirror of
https://github.com/fernandotcl/TinyEMU.git
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121 lines
2.9 KiB
C
121 lines
2.9 KiB
C
/*
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* Misc C utilities
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*
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* Copyright (c) 2016-2017 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <inttypes.h>
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#include <assert.h>
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#include <stdarg.h>
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#include <sys/time.h>
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#include <ctype.h>
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#include "cutils.h"
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void *mallocz(size_t size)
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{
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void *ptr;
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ptr = malloc(size);
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if (!ptr)
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return NULL;
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memset(ptr, 0, size);
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return ptr;
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}
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void pstrcpy(char *buf, int buf_size, const char *str)
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{
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int c;
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char *q = buf;
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if (buf_size <= 0)
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return;
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for(;;) {
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c = *str++;
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if (c == 0 || q >= buf + buf_size - 1)
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break;
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*q++ = c;
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}
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*q = '\0';
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}
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char *pstrcat(char *buf, int buf_size, const char *s)
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{
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int len;
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len = strlen(buf);
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if (len < buf_size)
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pstrcpy(buf + len, buf_size - len, s);
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return buf;
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}
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int strstart(const char *str, const char *val, const char **ptr)
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{
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const char *p, *q;
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p = str;
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q = val;
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while (*q != '\0') {
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if (*p != *q)
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return 0;
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p++;
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q++;
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}
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if (ptr)
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*ptr = p;
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return 1;
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}
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void dbuf_init(DynBuf *s)
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{
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memset(s, 0, sizeof(*s));
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}
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void dbuf_write(DynBuf *s, size_t offset, const uint8_t *data, size_t len)
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{
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size_t end, new_size;
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new_size = end = offset + len;
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if (new_size > s->allocated_size) {
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new_size = max_int(new_size, s->allocated_size * 3 / 2);
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s->buf = realloc(s->buf, new_size);
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s->allocated_size = new_size;
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}
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memcpy(s->buf + offset, data, len);
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if (end > s->size)
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s->size = end;
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}
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void dbuf_putc(DynBuf *s, uint8_t c)
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{
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dbuf_write(s, s->size, &c, 1);
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}
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void dbuf_putstr(DynBuf *s, const char *str)
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{
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dbuf_write(s, s->size, (const uint8_t *)str, strlen(str));
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}
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void dbuf_free(DynBuf *s)
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{
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free(s->buf);
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memset(s, 0, sizeof(*s));
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}
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