148 lines
3.0 KiB
C
148 lines
3.0 KiB
C
/*
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* $Id: str.c,v 1.3 2006-09-01 07:18:40 bacon Exp $
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*/
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#include <xp/awk/awk_i.h>
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#ifndef XP_AWK_STAND_ALONE
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#include <xp/bas/memory.h>
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#include <xp/bas/assert.h>
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#endif
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xp_awk_str_t* xp_awk_str_open (
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xp_awk_str_t* str, xp_size_t capa, xp_awk_t* awk)
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{
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if (str == XP_NULL)
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{
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str = (xp_awk_str_t*) XP_AWK_MALLOC (awk, sizeof(xp_awk_str_t));
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if (str == XP_NULL) return XP_NULL;
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str->__dynamic = xp_true;
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}
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else str->__dynamic = xp_false;
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str->awk = awk;
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str->buf = (xp_char_t*) XP_AWK_MALLOC (
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awk, xp_sizeof(xp_char_t) * (capa + 1));
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if (str->buf == XP_NULL)
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{
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if (str->__dynamic) XP_AWK_FREE (awk, str);
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return XP_NULL;
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}
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str->size = 0;
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str->capa = capa;
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str->buf[0] = XP_T('\0');
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return str;
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}
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void xp_awk_str_close (xp_awk_str_t* str)
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{
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XP_AWK_FREE (str->awk, str->buf);
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if (str->__dynamic) XP_AWK_FREE (str->awk, str);
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}
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void xp_awk_str_forfeit (xp_awk_str_t* str)
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{
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if (str->__dynamic) XP_AWK_FREE (str->awk, str);
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}
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xp_size_t xp_awk_str_cpy (xp_awk_str_t* str, const xp_char_t* s)
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{
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/* TODO: improve it */
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return xp_awk_str_ncpy (str, s, xp_awk_strlen(s));
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}
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xp_size_t xp_awk_str_ncpy (xp_awk_str_t* str, const xp_char_t* s, xp_size_t len)
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{
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xp_char_t* buf;
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if (len > str->capa)
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{
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buf = (xp_char_t*) XP_AWK_MALLOC (
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str->awk, xp_sizeof(xp_char_t) * (len + 1));
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if (buf == XP_NULL) return (xp_size_t)-1;
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XP_AWK_FREE (str->awk, str->buf);
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str->capa = len;
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str->buf = buf;
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}
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str->size = xp_awk_strncpy (str->buf, s, len);
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str->buf[str->size] = XP_T('\0');
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return str->size;
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}
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xp_size_t xp_awk_str_cat (xp_awk_str_t* str, const xp_char_t* s)
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{
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/* TODO: improve it */
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return xp_awk_str_ncat (str, s, xp_awk_strlen(s));
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}
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xp_size_t xp_awk_str_ncat (xp_awk_str_t* str, const xp_char_t* s, xp_size_t len)
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{
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if (len > str->capa - str->size)
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{
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xp_char_t* tmp;
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xp_size_t capa;
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capa = str->size + len;
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/* double the capa if necessary for concatenation */
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if (capa < str->capa * 2) capa = str->capa * 2;
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if (str->awk->syscas->realloc != XP_NULL)
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{
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tmp = (xp_char_t*) XP_AWK_REALLOC (
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str->awk, str->buf,
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xp_sizeof(xp_char_t) * (capa + 1));
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if (tmp == XP_NULL) return (xp_size_t)-1;
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}
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else
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{
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tmp = (xp_char_t*) XP_AWK_MALLOC (
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str->awk, xp_sizeof(xp_char_t) * (capa + 1));
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if (tmp == XP_NULL) return (xp_size_t)-1;
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if (str->buf != XP_NULL)
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{
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xp_memcpy (tmp, str->buf,
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xp_sizeof(xp_char_t) * (str->capa + 1));
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XP_AWK_FREE (str->awk, str->buf);
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}
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}
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str->capa = capa;
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str->buf = tmp;
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}
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str->size += xp_awk_strncpy (&str->buf[str->size], s, len);
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str->buf[str->size] = XP_T('\0');
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return str->size;
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}
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xp_size_t xp_awk_str_ccat (xp_awk_str_t* str, xp_char_t c)
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{
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return xp_awk_str_ncat (str, &c, 1);
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}
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xp_size_t xp_awk_str_nccat (xp_awk_str_t* str, xp_char_t c, xp_size_t len)
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{
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while (len > 0)
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{
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if (xp_awk_str_ncat (str, &c, 1) == (xp_size_t)-1)
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{
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return (xp_size_t)-1;
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}
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len--;
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}
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return str->size;
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}
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void xp_awk_str_clear (xp_awk_str_t* str)
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{
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str->size = 0;
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str->buf[0] = XP_T('\0');
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}
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